From 42ded7a866492c4cfffdcd10eee46a7660d18953 Mon Sep 17 00:00:00 2001
From: Hans Verkuil <hans.verkuil@cisco.com>
Date: Thu, 31 Aug 2017 04:12:54 -0400
Subject: media: tc358743_regs.h: add CEC registers

Add the missing CEC register defines.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/tc358743_regs.h | 94 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 92 insertions(+), 2 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/tc358743_regs.h b/drivers/media/i2c/tc358743_regs.h
index 657ef50f215f..227b46471793 100644
--- a/drivers/media/i2c/tc358743_regs.h
+++ b/drivers/media/i2c/tc358743_regs.h
@@ -193,8 +193,98 @@
 #define CSI_START                             0x0518
 #define MASK_STRT                             0x00000001
 
-#define CECEN                                 0x0600
-#define MASK_CECEN                            0x0001
+/* *** CEC (32 bit) *** */
+#define CECHCLK				      0x0028	/* 16 bits */
+#define MASK_CECHCLK			      (0x7ff << 0)
+
+#define CECLCLK				      0x002a	/* 16 bits */
+#define MASK_CECLCLK			      (0x7ff << 0)
+
+#define CECEN				      0x0600
+#define MASK_CECEN			      0x0001
+
+#define CECADD				      0x0604
+#define CECRST				      0x0608
+#define MASK_CECRESET			      0x0001
+
+#define CECREN				      0x060c
+#define MASK_CECREN			      0x0001
+
+#define CECRCTL1			      0x0614
+#define MASK_CECACKDIS			      (1 << 24)
+#define MASK_CECHNC			      (3 << 20)
+#define MASK_CECLNC			      (7 << 16)
+#define MASK_CECMIN			      (7 << 12)
+#define MASK_CECMAX			      (7 << 8)
+#define MASK_CECDAT			      (7 << 4)
+#define MASK_CECTOUT			      (3 << 2)
+#define MASK_CECRIHLD			      (1 << 1)
+#define MASK_CECOTH			      (1 << 0)
+
+#define CECRCTL2			      0x0618
+#define MASK_CECSWAV3			      (7 << 12)
+#define MASK_CECSWAV2			      (7 << 8)
+#define MASK_CECSWAV1			      (7 << 4)
+#define MASK_CECSWAV0			      (7 << 0)
+
+#define CECRCTL3			      0x061c
+#define MASK_CECWAV3			      (7 << 20)
+#define MASK_CECWAV2			      (7 << 16)
+#define MASK_CECWAV1			      (7 << 12)
+#define MASK_CECWAV0			      (7 << 8)
+#define MASK_CECACKEI			      (1 << 4)
+#define MASK_CECMINEI			      (1 << 3)
+#define MASK_CECMAXEI			      (1 << 2)
+#define MASK_CECRSTEI			      (1 << 1)
+#define MASK_CECWAVEI			      (1 << 0)
+
+#define CECTEN				      0x0620
+#define MASK_CECTBUSY			      (1 << 1)
+#define MASK_CECTEN			      (1 << 0)
+
+#define CECTCTL				      0x0628
+#define MASK_CECSTRS			      (7 << 20)
+#define MASK_CECSPRD			      (7 << 16)
+#define MASK_CECDTRS			      (7 << 12)
+#define MASK_CECDPRD			      (15 << 8)
+#define MASK_CECBRD			      (1 << 4)
+#define MASK_CECFREE			      (15 << 0)
+
+#define CECRSTAT			      0x062c
+#define MASK_CECRIWA			      (1 << 6)
+#define MASK_CECRIOR			      (1 << 5)
+#define MASK_CECRIACK			      (1 << 4)
+#define MASK_CECRIMIN			      (1 << 3)
+#define MASK_CECRIMAX			      (1 << 2)
+#define MASK_CECRISTA			      (1 << 1)
+#define MASK_CECRIEND			      (1 << 0)
+
+#define CECTSTAT			      0x0630
+#define MASK_CECTIUR			      (1 << 4)
+#define MASK_CECTIACK			      (1 << 3)
+#define MASK_CECTIAL			      (1 << 2)
+#define MASK_CECTIEND			      (1 << 1)
+
+#define CECRBUF1			      0x0634
+#define MASK_CECRACK			      (1 << 9)
+#define MASK_CECEOM			      (1 << 8)
+#define MASK_CECRBYTE			      (0xff << 0)
+
+#define CECTBUF1			      0x0674
+#define MASK_CECTEOM			      (1 << 8)
+#define MASK_CECTBYTE			      (0xff << 0)
+
+#define CECRCTR				      0x06b4
+#define MASK_CECRCTR			      (0x1f << 0)
+
+#define CECIMSK				      0x06c0
+#define MASK_CECTIM			      (1 << 1)
+#define MASK_CECRIM			      (1 << 0)
+
+#define CECICLR				      0x06cc
+#define MASK_CECTICLR			      (1 << 1)
+#define MASK_CECRICLR			      (1 << 0)
+
 
 #define HDMI_INT0                             0x8500
 #define MASK_I_KEY                            0x80
-- 
cgit v1.2.3


From a0ec8d1dc42e4255307cb1b95345c01c327a10a6 Mon Sep 17 00:00:00 2001
From: Hans Verkuil <hans.verkuil@cisco.com>
Date: Thu, 31 Aug 2017 04:12:55 -0400
Subject: media: tc358743: add CEC support

Add CEC support for the tc358743 HDMI-CSI bridge.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/Kconfig    |   8 ++
 drivers/media/i2c/tc358743.c | 205 +++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 207 insertions(+), 6 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index 94153895fcd4..47113774a297 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -354,6 +354,14 @@ config VIDEO_TC358743
 	  To compile this driver as a module, choose M here: the
 	  module will be called tc358743.
 
+config VIDEO_TC358743_CEC
+	bool "Enable Toshiba TC358743 CEC support"
+	depends on VIDEO_TC358743
+	select CEC_CORE
+	---help---
+	  When selected the tc358743 will support the optional
+	  HDMI CEC feature.
+
 config VIDEO_TVP514X
 	tristate "Texas Instruments TVP514x video decoder"
 	depends on VIDEO_V4L2 && I2C
diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index e6f5c363ccab..e1d8eef7055e 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -39,6 +39,7 @@
 #include <linux/workqueue.h>
 #include <linux/v4l2-dv-timings.h>
 #include <linux/hdmi.h>
+#include <media/cec.h>
 #include <media/v4l2-dv-timings.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-ctrls.h>
@@ -63,6 +64,7 @@ MODULE_LICENSE("GPL");
 
 #define I2C_MAX_XFER_SIZE  (EDID_BLOCK_SIZE + 2)
 
+#define POLL_INTERVAL_CEC_MS	10
 #define POLL_INTERVAL_MS	1000
 
 static const struct v4l2_dv_timings_cap tc358743_timings_cap = {
@@ -106,6 +108,8 @@ struct tc358743_state {
 	u8 csi_lanes_in_use;
 
 	struct gpio_desc *reset_gpio;
+
+	struct cec_adapter *cec_adap;
 };
 
 static void tc358743_enable_interrupts(struct v4l2_subdev *sd,
@@ -595,6 +599,7 @@ static void tc358743_set_ref_clk(struct v4l2_subdev *sd)
 	struct tc358743_platform_data *pdata = &state->pdata;
 	u32 sys_freq;
 	u32 lockdet_ref;
+	u32 cec_freq;
 	u16 fh_min;
 	u16 fh_max;
 
@@ -626,6 +631,15 @@ static void tc358743_set_ref_clk(struct v4l2_subdev *sd)
 	i2c_wr8_and_or(sd, NCO_F0_MOD, ~MASK_NCO_F0_MOD,
 			(pdata->refclk_hz == 27000000) ?
 			MASK_NCO_F0_MOD_27MHZ : 0x0);
+
+	/*
+	 * Trial and error suggests that the default register value
+	 * of 656 is for a 42 MHz reference clock. Use that to derive
+	 * a new value based on the actual reference clock.
+	 */
+	cec_freq = (656 * sys_freq) / 4200;
+	i2c_wr16(sd, CECHCLK, cec_freq);
+	i2c_wr16(sd, CECLCLK, cec_freq);
 }
 
 static void tc358743_set_csi_color_space(struct v4l2_subdev *sd)
@@ -814,11 +828,17 @@ static void tc358743_initial_setup(struct v4l2_subdev *sd)
 	struct tc358743_state *state = to_state(sd);
 	struct tc358743_platform_data *pdata = &state->pdata;
 
-	/* CEC and IR are not supported by this driver */
-	i2c_wr16_and_or(sd, SYSCTL, ~(MASK_CECRST | MASK_IRRST),
-			(MASK_CECRST | MASK_IRRST));
+	/*
+	 * IR is not supported by this driver.
+	 * CEC is only enabled if needed.
+	 */
+	i2c_wr16_and_or(sd, SYSCTL, ~(MASK_IRRST | MASK_CECRST),
+				     (MASK_IRRST | MASK_CECRST));
 
 	tc358743_reset(sd, MASK_CTXRST | MASK_HDMIRST);
+#ifdef CONFIG_VIDEO_TC358743_CEC
+	tc358743_reset(sd, MASK_CECRST);
+#endif
 	tc358743_sleep_mode(sd, false);
 
 	i2c_wr16(sd, FIFOCTL, pdata->fifo_level);
@@ -842,6 +862,133 @@ static void tc358743_initial_setup(struct v4l2_subdev *sd)
 	i2c_wr8(sd, VOUT_SET3, MASK_VOUT_EXTCNT);
 }
 
+/* --------------- CEC --------------- */
+
+#ifdef CONFIG_VIDEO_TC358743_CEC
+static int tc358743_cec_adap_enable(struct cec_adapter *adap, bool enable)
+{
+	struct tc358743_state *state = adap->priv;
+	struct v4l2_subdev *sd = &state->sd;
+
+	i2c_wr32(sd, CECIMSK, enable ? MASK_CECTIM | MASK_CECRIM : 0);
+	i2c_wr32(sd, CECICLR, MASK_CECTICLR | MASK_CECRICLR);
+	i2c_wr32(sd, CECEN, enable);
+	if (enable)
+		i2c_wr32(sd, CECREN, MASK_CECREN);
+	return 0;
+}
+
+static int tc358743_cec_adap_monitor_all_enable(struct cec_adapter *adap,
+						bool enable)
+{
+	struct tc358743_state *state = adap->priv;
+	struct v4l2_subdev *sd = &state->sd;
+	u32 reg;
+
+	reg = i2c_rd32(sd, CECRCTL1);
+	if (enable)
+		reg |= MASK_CECOTH;
+	else
+		reg &= ~MASK_CECOTH;
+	i2c_wr32(sd, CECRCTL1, reg);
+	return 0;
+}
+
+static int tc358743_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
+{
+	struct tc358743_state *state = adap->priv;
+	struct v4l2_subdev *sd = &state->sd;
+	unsigned int la = 0;
+
+	if (log_addr != CEC_LOG_ADDR_INVALID) {
+		la = i2c_rd32(sd, CECADD);
+		la |= 1 << log_addr;
+	}
+	i2c_wr32(sd, CECADD, la);
+	return 0;
+}
+
+static int tc358743_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
+				   u32 signal_free_time, struct cec_msg *msg)
+{
+	struct tc358743_state *state = adap->priv;
+	struct v4l2_subdev *sd = &state->sd;
+	unsigned int i;
+
+	i2c_wr32(sd, CECTCTL,
+		 (cec_msg_is_broadcast(msg) ? MASK_CECBRD : 0) |
+		 (signal_free_time - 1));
+	for (i = 0; i < msg->len; i++)
+		i2c_wr32(sd, CECTBUF1 + i * 4,
+			msg->msg[i] | ((i == msg->len - 1) ? MASK_CECTEOM : 0));
+	i2c_wr32(sd, CECTEN, MASK_CECTEN);
+	return 0;
+}
+
+static const struct cec_adap_ops tc358743_cec_adap_ops = {
+	.adap_enable = tc358743_cec_adap_enable,
+	.adap_log_addr = tc358743_cec_adap_log_addr,
+	.adap_transmit = tc358743_cec_adap_transmit,
+	.adap_monitor_all_enable = tc358743_cec_adap_monitor_all_enable,
+};
+
+static void tc358743_cec_isr(struct v4l2_subdev *sd, u16 intstatus,
+			     bool *handled)
+{
+	struct tc358743_state *state = to_state(sd);
+	unsigned int cec_rxint, cec_txint;
+	unsigned int clr = 0;
+
+	cec_rxint = i2c_rd32(sd, CECRSTAT);
+	cec_txint = i2c_rd32(sd, CECTSTAT);
+
+	if (intstatus & MASK_CEC_RINT)
+		clr |= MASK_CECRICLR;
+	if (intstatus & MASK_CEC_TINT)
+		clr |= MASK_CECTICLR;
+	i2c_wr32(sd, CECICLR, clr);
+
+	if ((intstatus & MASK_CEC_TINT) && cec_txint) {
+		if (cec_txint & MASK_CECTIEND)
+			cec_transmit_attempt_done(state->cec_adap,
+						  CEC_TX_STATUS_OK);
+		else if (cec_txint & MASK_CECTIAL)
+			cec_transmit_attempt_done(state->cec_adap,
+						  CEC_TX_STATUS_ARB_LOST);
+		else if (cec_txint & MASK_CECTIACK)
+			cec_transmit_attempt_done(state->cec_adap,
+						  CEC_TX_STATUS_NACK);
+		else if (cec_txint & MASK_CECTIUR) {
+			/*
+			 * Not sure when this bit is set. Treat
+			 * it as an error for now.
+			 */
+			cec_transmit_attempt_done(state->cec_adap,
+						  CEC_TX_STATUS_ERROR);
+		}
+		*handled = true;
+	}
+	if ((intstatus & MASK_CEC_RINT) &&
+	    (cec_rxint & MASK_CECRIEND)) {
+		struct cec_msg msg = {};
+		unsigned int i;
+		unsigned int v;
+
+		v = i2c_rd32(sd, CECRCTR);
+		msg.len = v & 0x1f;
+		for (i = 0; i < msg.len; i++) {
+			v = i2c_rd32(sd, CECRBUF1 + i * 4);
+			msg.msg[i] = v & 0xff;
+		}
+		cec_received_msg(state->cec_adap, &msg);
+		*handled = true;
+	}
+	i2c_wr16(sd, INTSTATUS,
+		 intstatus & (MASK_CEC_RINT | MASK_CEC_TINT));
+}
+
+#endif
+
 /* --------------- IRQ --------------- */
 
 static void tc358743_format_change(struct v4l2_subdev *sd)
@@ -1296,6 +1443,15 @@ static int tc358743_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
 		intstatus &= ~MASK_HDMI_INT;
 	}
 
+#ifdef CONFIG_VIDEO_TC358743_CEC
+	if (intstatus & (MASK_CEC_RINT | MASK_CEC_TINT)) {
+		tc358743_cec_isr(sd, intstatus, handled);
+		i2c_wr16(sd, INTSTATUS,
+			 intstatus & (MASK_CEC_RINT | MASK_CEC_TINT));
+		intstatus &= ~(MASK_CEC_RINT | MASK_CEC_TINT);
+	}
+#endif
+
 	if (intstatus & MASK_CSI_INT) {
 		u32 csi_int = i2c_rd32(sd, CSI_INT);
 
@@ -1328,10 +1484,15 @@ static irqreturn_t tc358743_irq_handler(int irq, void *dev_id)
 static void tc358743_irq_poll_timer(unsigned long arg)
 {
 	struct tc358743_state *state = (struct tc358743_state *)arg;
+	unsigned int msecs;
 
 	schedule_work(&state->work_i2c_poll);
-
-	mod_timer(&state->timer, jiffies + msecs_to_jiffies(POLL_INTERVAL_MS));
+	/*
+	 * If CEC is present, then we need to poll more frequently,
+	 * otherwise we will miss CEC messages.
+	 */
+	msecs = state->cec_adap ? POLL_INTERVAL_CEC_MS : POLL_INTERVAL_MS;
+	mod_timer(&state->timer, jiffies + msecs_to_jiffies(msecs));
 }
 
 static void tc358743_work_i2c_poll(struct work_struct *work)
@@ -1621,6 +1782,8 @@ static int tc358743_s_edid(struct v4l2_subdev *sd,
 {
 	struct tc358743_state *state = to_state(sd);
 	u16 edid_len = edid->blocks * EDID_BLOCK_SIZE;
+	u16 pa;
+	int err;
 	int i;
 
 	v4l2_dbg(2, debug, sd, "%s, pad %d, start block %d, blocks %d\n",
@@ -1638,6 +1801,12 @@ static int tc358743_s_edid(struct v4l2_subdev *sd,
 		edid->blocks = EDID_NUM_BLOCKS_MAX;
 		return -E2BIG;
 	}
+	pa = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
+	err = cec_phys_addr_validate(pa, &pa, NULL);
+	if (err)
+		return err;
+
+	cec_phys_addr_invalidate(state->cec_adap);
 
 	tc358743_disable_edid(sd);
 
@@ -1654,6 +1823,8 @@ static int tc358743_s_edid(struct v4l2_subdev *sd,
 
 	state->edid_blocks_written = edid->blocks;
 
+	cec_s_phys_addr(state->cec_adap, pa, false);
+
 	if (tx_5v_power_present(sd))
 		tc358743_enable_edid(sd);
 
@@ -1867,6 +2038,7 @@ static int tc358743_probe(struct i2c_client *client,
 	struct tc358743_state *state;
 	struct tc358743_platform_data *pdata = client->dev.platform_data;
 	struct v4l2_subdev *sd;
+	u16 irq_mask = MASK_HDMI_MSK | MASK_CSI_MSK;
 	int err;
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
@@ -1945,6 +2117,17 @@ static int tc358743_probe(struct i2c_client *client,
 	INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug,
 			tc358743_delayed_work_enable_hotplug);
 
+#ifdef CONFIG_VIDEO_TC358743_CEC
+	state->cec_adap = cec_allocate_adapter(&tc358743_cec_adap_ops,
+		state, dev_name(&client->dev),
+		CEC_CAP_DEFAULTS | CEC_CAP_MONITOR_ALL, CEC_MAX_LOG_ADDRS);
+	if (IS_ERR(state->cec_adap)) {
+		err = state->cec_adap ? PTR_ERR(state->cec_adap) : -ENOMEM;
+		goto err_hdl;
+	}
+	irq_mask |= MASK_CEC_RMSK | MASK_CEC_TMSK;
+#endif
+
 	tc358743_initial_setup(sd);
 
 	tc358743_s_dv_timings(sd, &default_timing);
@@ -1971,8 +2154,16 @@ static int tc358743_probe(struct i2c_client *client,
 		add_timer(&state->timer);
 	}
 
+	err = cec_register_adapter(state->cec_adap, &client->dev);
+	if (err < 0) {
+		pr_err("%s: failed to register the cec device\n", __func__);
+		cec_delete_adapter(state->cec_adap);
+		state->cec_adap = NULL;
+		goto err_work_queues;
+	}
+
 	tc358743_enable_interrupts(sd, tx_5v_power_present(sd));
-	i2c_wr16(sd, INTMASK, ~(MASK_HDMI_MSK | MASK_CSI_MSK) & 0xffff);
+	i2c_wr16(sd, INTMASK, ~irq_mask);
 
 	err = v4l2_ctrl_handler_setup(sd->ctrl_handler);
 	if (err)
@@ -1984,6 +2175,7 @@ static int tc358743_probe(struct i2c_client *client,
 	return 0;
 
 err_work_queues:
+	cec_unregister_adapter(state->cec_adap);
 	if (!state->i2c_client->irq)
 		flush_work(&state->work_i2c_poll);
 	cancel_delayed_work(&state->delayed_work_enable_hotplug);
@@ -2004,6 +2196,7 @@ static int tc358743_remove(struct i2c_client *client)
 		flush_work(&state->work_i2c_poll);
 	}
 	cancel_delayed_work(&state->delayed_work_enable_hotplug);
+	cec_unregister_adapter(state->cec_adap);
 	v4l2_async_unregister_subdev(sd);
 	v4l2_device_unregister_subdev(sd);
 	mutex_destroy(&state->confctl_mutex);
-- 
cgit v1.2.3


From c38e8657a471e9af42b86009e5d3085031b41fda Mon Sep 17 00:00:00 2001
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Mon, 28 Aug 2017 05:46:57 -0400
Subject: media: drivers: delete error messages for failed memory allocation

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

[mchehab@s-opensource.com: fold several similar patches into one]

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/adv7604.c | 4 +---
 drivers/media/i2c/adv7842.c | 4 +---
 2 files changed, 2 insertions(+), 6 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index f289b8aca1da..5217f9ad5e6b 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -3316,10 +3316,8 @@ static int adv76xx_probe(struct i2c_client *client,
 			client->addr << 1);
 
 	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
-	if (!state) {
-		v4l_err(client, "Could not allocate adv76xx_state memory!\n");
+	if (!state)
 		return -ENOMEM;
-	}
 
 	state->i2c_clients[ADV76XX_PAGE_IO] = client;
 
diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c
index 65f34e7e146f..c582bcb782a6 100644
--- a/drivers/media/i2c/adv7842.c
+++ b/drivers/media/i2c/adv7842.c
@@ -3468,10 +3468,8 @@ static int adv7842_probe(struct i2c_client *client,
 	}
 
 	state = devm_kzalloc(&client->dev, sizeof(struct adv7842_state), GFP_KERNEL);
-	if (!state) {
-		v4l_err(client, "Could not allocate adv7842_state memory!\n");
+	if (!state)
 		return -ENOMEM;
-	}
 
 	/* platform data */
 	state->pdata = *pdata;
-- 
cgit v1.2.3


From 2d3da59ff163b2aa805de0fc65ba933a735b00cd Mon Sep 17 00:00:00 2001
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Mon, 28 Aug 2017 05:55:16 -0400
Subject: media: drivers: improve a size determination

Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

[mchehab@s-opensoure.com: merge similar patches into one]

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
---
 drivers/media/i2c/adv7842.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c
index c582bcb782a6..136aa80a834b 100644
--- a/drivers/media/i2c/adv7842.c
+++ b/drivers/media/i2c/adv7842.c
@@ -3467,7 +3467,7 @@ static int adv7842_probe(struct i2c_client *client,
 		return -ENODEV;
 	}
 
-	state = devm_kzalloc(&client->dev, sizeof(struct adv7842_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (!state)
 		return -ENOMEM;
 
-- 
cgit v1.2.3


From af28c99628ebfbdc3fff3d92c7044d3a51b7ccea Mon Sep 17 00:00:00 2001
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Mon, 28 Aug 2017 06:50:28 -0400
Subject: media: drivers: Adjust checks for null pointers
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The script “checkpatch.pl” pointed information out like the following.

Comparison to NULL could be written !…

Thus fix the affected source code places.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
---
 drivers/media/i2c/adv7604.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index 5217f9ad5e6b..c786cd125417 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -1948,7 +1948,7 @@ static int adv76xx_set_format(struct v4l2_subdev *sd,
 		return -EINVAL;
 
 	info = adv76xx_format_info(state, format->format.code);
-	if (info == NULL)
+	if (!info)
 		info = adv76xx_format_info(state, MEDIA_BUS_FMT_YUYV8_2X8);
 
 	adv76xx_fill_format(state, &format->format);
@@ -2256,7 +2256,7 @@ static int adv76xx_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
 		return 0;
 	}
 
-	if (data == NULL)
+	if (!data)
 		return -ENODATA;
 
 	if (edid->start_block >= state->edid.blocks)
@@ -3480,7 +3480,7 @@ static int adv76xx_probe(struct i2c_client *client,
 		state->i2c_clients[i] =
 			adv76xx_dummy_client(sd, state->pdata.i2c_addresses[i],
 					     0xf2 + i);
-		if (state->i2c_clients[i] == NULL) {
+		if (!state->i2c_clients[i]) {
 			err = -ENOMEM;
 			v4l2_err(sd, "failed to create i2c client %u\n", i);
 			goto err_i2c;
-- 
cgit v1.2.3


From 2be730b828c59fc776c8045883c1dc7a37d7b457 Mon Sep 17 00:00:00 2001
From: Colin Ian King <colin.king@canonical.com>
Date: Tue, 5 Sep 2017 07:03:32 -0400
Subject: media: cx25840: make array stds static const, reduces object code
 size

Don't populate the array syds on the stack, instead make it static const.
Makes the object code smaller by over 280 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  81451	  12784	    704	  94939	  172db	cx25840-core.o

   text	   data	    bss	    dec	    hex	filename
  81070	  12880	    704	  94654	  171be	cx25840-core.o

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/cx25840/cx25840-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/cx25840/cx25840-core.c b/drivers/media/i2c/cx25840/cx25840-core.c
index 39f51daa7558..f38bf819d805 100644
--- a/drivers/media/i2c/cx25840/cx25840-core.c
+++ b/drivers/media/i2c/cx25840/cx25840-core.c
@@ -1745,7 +1745,7 @@ static int cx25840_g_std(struct v4l2_subdev *sd, v4l2_std_id *std)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	v4l2_std_id stds[] = {
+	static const v4l2_std_id stds[] = {
 		/* 0000 */ V4L2_STD_UNKNOWN,
 
 		/* 0001 */ V4L2_STD_NTSC_M,
-- 
cgit v1.2.3


From 3ff692fad32829b5b2199273d2b35273ecab007f Mon Sep 17 00:00:00 2001
From: Colin Ian King <colin.king@canonical.com>
Date: Wed, 6 Sep 2017 09:30:16 -0400
Subject: media: ov9640: make const arrays res_x/y static const, reduces object
 code size

Don't populate the arrays res_x and resy_y on the stack, instead make them
static const.  Makes the object code smaller by over 160 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  10509	   2800	     64	  13373	   343d	ov9640.o

After:
   text	   data	    bss	    dec	    hex	filename
  10184	   2960	     64	  13208	   3398	ov9640.o

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/soc_camera/ov9640.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/soc_camera/ov9640.c b/drivers/media/i2c/soc_camera/ov9640.c
index 0146d1f7aacb..dafea6d90ad9 100644
--- a/drivers/media/i2c/soc_camera/ov9640.c
+++ b/drivers/media/i2c/soc_camera/ov9640.c
@@ -335,8 +335,8 @@ static void ov9640_res_roundup(u32 *width, u32 *height)
 {
 	int i;
 	enum { QQCIF, QQVGA, QCIF, QVGA, CIF, VGA, SXGA };
-	int res_x[] = { 88, 160, 176, 320, 352, 640, 1280 };
-	int res_y[] = { 72, 120, 144, 240, 288, 480, 960 };
+	static const int res_x[] = { 88, 160, 176, 320, 352, 640, 1280 };
+	static const int res_y[] = { 72, 120, 144, 240, 288, 480, 960 };
 
 	for (i = 0; i < ARRAY_SIZE(res_x); i++) {
 		if (res_x[i] >= *width && res_y[i] >= *height) {
-- 
cgit v1.2.3


From 831c4c81e8ceba7d34b7fc66da1693bc4b9e7e11 Mon Sep 17 00:00:00 2001
From: Sean Young <sean@mess.org>
Date: Fri, 1 Sep 2017 09:55:59 -0300
Subject: [media] media: rc: ensure that protocols are enabled for scancode
 drivers

rc scancode drivers without change_protocol should have all
protocols enabled at all time. This was only true for cec and
ir-kbd-i2c.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ir-kbd-i2c.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ir-kbd-i2c.c b/drivers/media/i2c/ir-kbd-i2c.c
index a374e2a0ac3d..8b5f7d0435e4 100644
--- a/drivers/media/i2c/ir-kbd-i2c.c
+++ b/drivers/media/i2c/ir-kbd-i2c.c
@@ -460,7 +460,6 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	 */
 	rc->map_name       = ir->ir_codes;
 	rc->allowed_protocols = rc_proto;
-	rc->enabled_protocols = rc_proto;
 	if (!rc->driver_name)
 		rc->driver_name = MODULE_NAME;
 
-- 
cgit v1.2.3


From bc66c99a7e65d3964b4c5d10f574d462f40ae48e Mon Sep 17 00:00:00 2001
From: Simon Yuan <simon.yuan@navico.com>
Date: Mon, 11 Sep 2017 19:26:53 -0300
Subject: [media] media: i2c: adv748x: Map v4l2_std_id to the internal reg
 value

The video standard was not mapped to the corresponding value of the
internal video standard in adv748x_afe_querystd, causing the wrong
video standard to be selected.

Fixes: 3e89586a64df ("media: i2c: adv748x: add adv748x driver")
[Kieran: Obtain the std from the afe->curr_norm]

Signed-off-by: Simon Yuan <simon.yuan@navico.com>
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/adv748x/adv748x-afe.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/adv748x/adv748x-afe.c b/drivers/media/i2c/adv748x/adv748x-afe.c
index b33ccfc08708..4aa8e45b5cd3 100644
--- a/drivers/media/i2c/adv748x/adv748x-afe.c
+++ b/drivers/media/i2c/adv748x/adv748x-afe.c
@@ -217,6 +217,7 @@ static int adv748x_afe_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
 {
 	struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
 	struct adv748x_state *state = adv748x_afe_to_state(afe);
+	int afe_std;
 	int ret;
 
 	mutex_lock(&state->mutex);
@@ -235,8 +236,12 @@ static int adv748x_afe_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
 	/* Read detected standard */
 	ret = adv748x_afe_status(afe, NULL, std);
 
+	afe_std = adv748x_afe_std(afe->curr_norm);
+	if (afe_std < 0)
+		goto unlock;
+
 	/* Restore original state */
-	adv748x_afe_set_video_standard(state, afe->curr_norm);
+	adv748x_afe_set_video_standard(state, afe_std);
 
 unlock:
 	mutex_unlock(&state->mutex);
-- 
cgit v1.2.3


From d17dd2db943272b6d9d1315528cde9dad74fa6ed Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Wed, 20 Sep 2017 20:27:41 -0300
Subject: [media] media/i2c/tc358743: Initialize timer

This converts to use setup_timer() to set callback and data, though it
doesn't look like this would have worked with timer checking enabled
since no init_timer() was ever called before.

Cc: Mats Randgaard <matrandg@cisco.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/tc358743.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index e1d8eef7055e..a9355032076f 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -2147,8 +2147,8 @@ static int tc358743_probe(struct i2c_client *client,
 	} else {
 		INIT_WORK(&state->work_i2c_poll,
 			  tc358743_work_i2c_poll);
-		state->timer.data = (unsigned long)state;
-		state->timer.function = tc358743_irq_poll_timer;
+		setup_timer(&state->timer, tc358743_irq_poll_timer,
+			    (unsigned long)state);
 		state->timer.expires = jiffies +
 				       msecs_to_jiffies(POLL_INTERVAL_MS);
 		add_timer(&state->timer);
-- 
cgit v1.2.3


From 99cd12425dfe9a400b672f112512a3678dfd1eb6 Mon Sep 17 00:00:00 2001
From: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Date: Fri, 25 Aug 2017 01:20:55 -0300
Subject: [media] media: ov5670: Use recommended black level and output bias

Previously, images were relatively darker due to non-optimal
settings for black target level and bias.

Now, use recommended settings for black target level and output bias
as default values. The same default settings apply to all the resolutions.
Given these recommeneded settings do not change dynamically, add these to
existing mode register settings.

Signed-off-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov5670.c | 30 ++++++++++++++++++++++++------
 1 file changed, 24 insertions(+), 6 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov5670.c b/drivers/media/i2c/ov5670.c
index 6f7a1d6d2200..759ca6229db9 100644
--- a/drivers/media/i2c/ov5670.c
+++ b/drivers/media/i2c/ov5670.c
@@ -390,7 +390,10 @@ static const struct ov5670_reg mode_2592x1944_regs[] = {
 	{0x5792, 0x00},
 	{0x5793, 0x52},
 	{0x5794, 0xa3},
-	{0x3503, 0x00}
+	{0x3503, 0x00},
+	{0x5045, 0x05},
+	{0x4003, 0x40},
+	{0x5048, 0x40}
 };
 
 static const struct ov5670_reg mode_1296x972_regs[] = {
@@ -653,7 +656,10 @@ static const struct ov5670_reg mode_1296x972_regs[] = {
 	{0x5792, 0x00},
 	{0x5793, 0x52},
 	{0x5794, 0xa3},
-	{0x3503, 0x00}
+	{0x3503, 0x00},
+	{0x5045, 0x05},
+	{0x4003, 0x40},
+	{0x5048, 0x40}
 };
 
 static const struct ov5670_reg mode_648x486_regs[] = {
@@ -916,7 +922,10 @@ static const struct ov5670_reg mode_648x486_regs[] = {
 	{0x5792, 0x00},
 	{0x5793, 0x52},
 	{0x5794, 0xa3},
-	{0x3503, 0x00}
+	{0x3503, 0x00},
+	{0x5045, 0x05},
+	{0x4003, 0x40},
+	{0x5048, 0x40}
 };
 
 static const struct ov5670_reg mode_2560x1440_regs[] = {
@@ -1178,7 +1187,10 @@ static const struct ov5670_reg mode_2560x1440_regs[] = {
 	{0x5791, 0x06},
 	{0x5792, 0x00},
 	{0x5793, 0x52},
-	{0x5794, 0xa3}
+	{0x5794, 0xa3},
+	{0x5045, 0x05},
+	{0x4003, 0x40},
+	{0x5048, 0x40}
 };
 
 static const struct ov5670_reg mode_1280x720_regs[] = {
@@ -1441,7 +1453,10 @@ static const struct ov5670_reg mode_1280x720_regs[] = {
 	{0x5792, 0x00},
 	{0x5793, 0x52},
 	{0x5794, 0xa3},
-	{0x3503, 0x00}
+	{0x3503, 0x00},
+	{0x5045, 0x05},
+	{0x4003, 0x40},
+	{0x5048, 0x40}
 };
 
 static const struct ov5670_reg mode_640x360_regs[] = {
@@ -1704,7 +1719,10 @@ static const struct ov5670_reg mode_640x360_regs[] = {
 	{0x5792, 0x00},
 	{0x5793, 0x52},
 	{0x5794, 0xa3},
-	{0x3503, 0x00}
+	{0x3503, 0x00},
+	{0x5045, 0x05},
+	{0x4003, 0x40},
+	{0x5048, 0x40}
 };
 
 static const char * const ov5670_test_pattern_menu[] = {
-- 
cgit v1.2.3


From bddb4b53356d3c97ee387c9ae7f290e4c76e8bc6 Mon Sep 17 00:00:00 2001
From: Fabio Estevam <fabio.estevam@nxp.com>
Date: Sun, 27 Aug 2017 13:30:36 -0300
Subject: [media] mt9m111: Propagate the real error on v4l2_clk_get() failure

v4l2_clk_get() may return different error codes other than -EPROBE_DEFER,
so it is better to return the real error code instead.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/mt9m111.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/mt9m111.c b/drivers/media/i2c/mt9m111.c
index 99b992e46702..b1665d97e0fd 100644
--- a/drivers/media/i2c/mt9m111.c
+++ b/drivers/media/i2c/mt9m111.c
@@ -945,7 +945,7 @@ static int mt9m111_probe(struct i2c_client *client,
 
 	mt9m111->clk = v4l2_clk_get(&client->dev, "mclk");
 	if (IS_ERR(mt9m111->clk))
-		return -EPROBE_DEFER;
+		return PTR_ERR(mt9m111->clk);
 
 	/* Default HIGHPOWER context */
 	mt9m111->ctx = &context_b;
-- 
cgit v1.2.3


From 877f1af154ec427d9c3c936a39a10afda95dcb97 Mon Sep 17 00:00:00 2001
From: Fabio Estevam <fabio.estevam@nxp.com>
Date: Sun, 27 Aug 2017 13:30:37 -0300
Subject: [media] ov2640: Propagate the real error on devm_clk_get() failure

devm_clk_get() may return different error codes other than -EPROBE_DEFER,
so it is better to return the real error code instead.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov2640.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov2640.c b/drivers/media/i2c/ov2640.c
index e6d0c1f64f0b..e6cbe01bc4cf 100644
--- a/drivers/media/i2c/ov2640.c
+++ b/drivers/media/i2c/ov2640.c
@@ -1107,7 +1107,7 @@ static int ov2640_probe(struct i2c_client *client,
 	if (client->dev.of_node) {
 		priv->clk = devm_clk_get(&client->dev, "xvclk");
 		if (IS_ERR(priv->clk))
-			return -EPROBE_DEFER;
+			return PTR_ERR(priv->clk);
 		clk_prepare_enable(priv->clk);
 	}
 
-- 
cgit v1.2.3


From c3d14780249814f200317cfed1e5d288aeefb528 Mon Sep 17 00:00:00 2001
From: Fabio Estevam <fabio.estevam@nxp.com>
Date: Sun, 27 Aug 2017 13:30:38 -0300
Subject: [media] ov2640: Check the return value from clk_prepare_enable()

clk_prepare_enable() may fail, so we should better check its return value
and propagate it in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov2640.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov2640.c b/drivers/media/i2c/ov2640.c
index e6cbe01bc4cf..5f013c8cbdb5 100644
--- a/drivers/media/i2c/ov2640.c
+++ b/drivers/media/i2c/ov2640.c
@@ -1108,7 +1108,9 @@ static int ov2640_probe(struct i2c_client *client,
 		priv->clk = devm_clk_get(&client->dev, "xvclk");
 		if (IS_ERR(priv->clk))
 			return PTR_ERR(priv->clk);
-		clk_prepare_enable(priv->clk);
+		ret = clk_prepare_enable(priv->clk);
+		if (ret)
+			return ret;
 	}
 
 	ret = ov2640_probe_dt(client, priv);
-- 
cgit v1.2.3


From 1a58fbf5133c0c016decfa85f20b97a69672e315 Mon Sep 17 00:00:00 2001
From: Rajmohan Mani <rajmohan.mani@intel.com>
Date: Wed, 30 Aug 2017 14:48:52 -0300
Subject: [media] dw9714: Set the v4l2 focus ctrl step as 1

Current v4l2 focus ctrl step value of 16, limits the minimum granularity
of focus positions to 16. Setting this value as 1, enables more accurate
focus positions.

Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/dw9714.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/dw9714.c b/drivers/media/i2c/dw9714.c
index 95af4fc99cd0..ed01e8bd4331 100644
--- a/drivers/media/i2c/dw9714.c
+++ b/drivers/media/i2c/dw9714.c
@@ -20,6 +20,11 @@
 
 #define DW9714_NAME		"dw9714"
 #define DW9714_MAX_FOCUS_POS	1023
+/*
+ * This sets the minimum granularity for the focus positions.
+ * A value of 1 gives maximum accuracy for a desired focus position
+ */
+#define DW9714_FOCUS_STEPS	1
 /*
  * This acts as the minimum granularity of lens movement.
  * Keep this value power of 2, so the control steps can be
@@ -137,7 +142,7 @@ static int dw9714_init_controls(struct dw9714_device *dev_vcm)
 	v4l2_ctrl_handler_init(hdl, 1);
 
 	v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FOCUS_ABSOLUTE,
-			  0, DW9714_MAX_FOCUS_POS, DW9714_CTRL_STEPS, 0);
+			  0, DW9714_MAX_FOCUS_POS, DW9714_FOCUS_STEPS, 0);
 
 	if (hdl->error)
 		dev_err(&client->dev, "%s fail error: 0x%x\n",
-- 
cgit v1.2.3


From 3eefbc69bbdc7bca8c3751e525902d779ca1cdd3 Mon Sep 17 00:00:00 2001
From: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Date: Fri, 1 Sep 2017 19:08:31 -0300
Subject: [media] media: ov5670: Fix not streaming issue after resume

Previously, the sensor was not streaming after resume from suspend,
i.e. on S0->S3->S0 transition. Due to this, camera app preview appeared
as stuck.

Now, handle streaming state correctly in case of suspend-resume.

Signed-off-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov5670.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov5670.c b/drivers/media/i2c/ov5670.c
index 759ca6229db9..a65469f88e36 100644
--- a/drivers/media/i2c/ov5670.c
+++ b/drivers/media/i2c/ov5670.c
@@ -2341,8 +2341,6 @@ static int ov5670_start_streaming(struct ov5670 *ov5670)
 		return ret;
 	}
 
-	ov5670->streaming = true;
-
 	return 0;
 }
 
@@ -2356,8 +2354,6 @@ static int ov5670_stop_streaming(struct ov5670 *ov5670)
 	if (ret)
 		dev_err(&client->dev, "%s failed to set stream\n", __func__);
 
-	ov5670->streaming = false;
-
 	/* Return success even if it was an error, as there is nothing the
 	 * caller can do about it.
 	 */
@@ -2388,6 +2384,7 @@ static int ov5670_set_stream(struct v4l2_subdev *sd, int enable)
 		ret = ov5670_stop_streaming(ov5670);
 		pm_runtime_put(&client->dev);
 	}
+	ov5670->streaming = enable;
 	goto unlock_and_return;
 
 error:
-- 
cgit v1.2.3


From 0fd58435890aa9f2d44baaa2f328f7f8f512f4dc Mon Sep 17 00:00:00 2001
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 2 Sep 2017 11:07:31 -0300
Subject: [media] i2c: Delete an error messages for failed memory allocation

Omit extra messages for memory allocation failures.

This issue was detected by using the Coccinelle software.

[mchehab@s-opensource.com: merged similar patches]
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov2640.c            | 5 +----
 drivers/media/i2c/ov6650.c            | 5 +----
 drivers/media/i2c/soc_camera/ov9640.c | 5 +----
 drivers/media/i2c/soc_camera/ov9740.c | 4 +---
 4 files changed, 4 insertions(+), 15 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov2640.c b/drivers/media/i2c/ov2640.c
index 5f013c8cbdb5..c0d0c50f1d02 100644
--- a/drivers/media/i2c/ov2640.c
+++ b/drivers/media/i2c/ov2640.c
@@ -1098,11 +1098,8 @@ static int ov2640_probe(struct i2c_client *client,
 	}
 
 	priv = devm_kzalloc(&client->dev, sizeof(struct ov2640_priv), GFP_KERNEL);
-	if (!priv) {
-		dev_err(&adapter->dev,
-			"Failed to allocate memory for private data!\n");
+	if (!priv)
 		return -ENOMEM;
-	}
 
 	if (client->dev.of_node) {
 		priv->clk = devm_clk_get(&client->dev, "xvclk");
diff --git a/drivers/media/i2c/ov6650.c b/drivers/media/i2c/ov6650.c
index 768f2950ea36..8975d16b2b24 100644
--- a/drivers/media/i2c/ov6650.c
+++ b/drivers/media/i2c/ov6650.c
@@ -951,11 +951,8 @@ static int ov6650_probe(struct i2c_client *client,
 	int ret;
 
 	priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv) {
-		dev_err(&client->dev,
-			"Failed to allocate memory for private data!\n");
+	if (!priv)
 		return -ENOMEM;
-	}
 
 	v4l2_i2c_subdev_init(&priv->subdev, client, &ov6650_subdev_ops);
 	v4l2_ctrl_handler_init(&priv->hdl, 13);
diff --git a/drivers/media/i2c/soc_camera/ov9640.c b/drivers/media/i2c/soc_camera/ov9640.c
index dafea6d90ad9..883500805aac 100644
--- a/drivers/media/i2c/soc_camera/ov9640.c
+++ b/drivers/media/i2c/soc_camera/ov9640.c
@@ -676,11 +676,8 @@ static int ov9640_probe(struct i2c_client *client,
 	}
 
 	priv = devm_kzalloc(&client->dev, sizeof(struct ov9640_priv), GFP_KERNEL);
-	if (!priv) {
-		dev_err(&client->dev,
-			"Failed to allocate memory for private data!\n");
+	if (!priv)
 		return -ENOMEM;
-	}
 
 	v4l2_i2c_subdev_init(&priv->subdev, client, &ov9640_subdev_ops);
 
diff --git a/drivers/media/i2c/soc_camera/ov9740.c b/drivers/media/i2c/soc_camera/ov9740.c
index cc07b7ae5407..f44f5da795f9 100644
--- a/drivers/media/i2c/soc_camera/ov9740.c
+++ b/drivers/media/i2c/soc_camera/ov9740.c
@@ -936,10 +936,8 @@ static int ov9740_probe(struct i2c_client *client,
 	}
 
 	priv = devm_kzalloc(&client->dev, sizeof(struct ov9740_priv), GFP_KERNEL);
-	if (!priv) {
-		dev_err(&client->dev, "Failed to allocate private data!\n");
+	if (!priv)
 		return -ENOMEM;
-	}
 
 	v4l2_i2c_subdev_init(&priv->subdev, client, &ov9740_subdev_ops);
 	v4l2_ctrl_handler_init(&priv->hdl, 13);
-- 
cgit v1.2.3


From 19fab6fe67d815eb90095e21e3273a1fbe0c8fd9 Mon Sep 17 00:00:00 2001
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 2 Sep 2017 11:09:35 -0300
Subject: [media] i2c: Improve a size determination

Replace the specification of a data structure by pointer dereferences
as the parameter for the operator "sizeof" to make size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

[mchehab@s-opensource.com: merged similar patches]
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov2640.c            | 2 +-
 drivers/media/i2c/soc_camera/ov9640.c | 2 +-
 drivers/media/i2c/soc_camera/ov9740.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov2640.c b/drivers/media/i2c/ov2640.c
index c0d0c50f1d02..cc3882c1e10e 100644
--- a/drivers/media/i2c/ov2640.c
+++ b/drivers/media/i2c/ov2640.c
@@ -1097,7 +1097,7 @@ static int ov2640_probe(struct i2c_client *client,
 		return -EIO;
 	}
 
-	priv = devm_kzalloc(&client->dev, sizeof(struct ov2640_priv), GFP_KERNEL);
+	priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
diff --git a/drivers/media/i2c/soc_camera/ov9640.c b/drivers/media/i2c/soc_camera/ov9640.c
index 883500805aac..c63948989688 100644
--- a/drivers/media/i2c/soc_camera/ov9640.c
+++ b/drivers/media/i2c/soc_camera/ov9640.c
@@ -675,7 +675,7 @@ static int ov9640_probe(struct i2c_client *client,
 		return -EINVAL;
 	}
 
-	priv = devm_kzalloc(&client->dev, sizeof(struct ov9640_priv), GFP_KERNEL);
+	priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
diff --git a/drivers/media/i2c/soc_camera/ov9740.c b/drivers/media/i2c/soc_camera/ov9740.c
index f44f5da795f9..755de2289c39 100644
--- a/drivers/media/i2c/soc_camera/ov9740.c
+++ b/drivers/media/i2c/soc_camera/ov9740.c
@@ -935,7 +935,7 @@ static int ov9740_probe(struct i2c_client *client,
 		return -EINVAL;
 	}
 
-	priv = devm_kzalloc(&client->dev, sizeof(struct ov9740_priv), GFP_KERNEL);
+	priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
-- 
cgit v1.2.3


From 91c158dd26b82207c80970b85ff7aa473da42312 Mon Sep 17 00:00:00 2001
From: Colin Ian King <colin.king@canonical.com>
Date: Tue, 12 Sep 2017 06:11:15 -0300
Subject: [media] ov2640: make array reset_seq static, reduces object code size

Don't populate the array reset_seq on the stack, instead make it
static.  Makes the object code smaller by over 50 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  11737	   6000	     64	  17801	   4589	drivers/media/i2c/ov2640.o

After:
   text	   data	    bss	    dec	    hex	filename
  11582	   6096	     64	  17742	   454e	drivers/media/i2c/ov2640.o

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov2640.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov2640.c b/drivers/media/i2c/ov2640.c
index cc3882c1e10e..38b8bab7e6aa 100644
--- a/drivers/media/i2c/ov2640.c
+++ b/drivers/media/i2c/ov2640.c
@@ -685,7 +685,7 @@ static int ov2640_mask_set(struct i2c_client *client,
 static int ov2640_reset(struct i2c_client *client)
 {
 	int ret;
-	const struct regval_list reset_seq[] = {
+	static const struct regval_list reset_seq[] = {
 		{BANK_SEL, BANK_SEL_SENS},
 		{COM7, COM7_SRST},
 		ENDMARKER,
-- 
cgit v1.2.3


From 6f2a0594aed2b3ac03fdd2e75b9fcb9f951e283a Mon Sep 17 00:00:00 2001
From: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Date: Mon, 18 Sep 2017 17:43:40 -0300
Subject: [media] media: ov13858: Calculate pixel-rate at runtime, use mode

Calculate pixel-rate at run time instead of compile time.

Instead of using hardcoded pixels-per-line, extract it from current sensor
mode.

Signed-off-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov13858.c | 49 +++++++++++++++++++++++++++------------------
 1 file changed, 29 insertions(+), 20 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c
index af7af0d14c69..4e331b401a71 100644
--- a/drivers/media/i2c/ov13858.c
+++ b/drivers/media/i2c/ov13858.c
@@ -104,7 +104,6 @@ struct ov13858_reg_list {
 
 /* Link frequency config */
 struct ov13858_link_freq_config {
-	u32 pixel_rate;
 	u32 pixels_per_line;
 
 	/* PLL registers for this link frequency */
@@ -948,6 +947,12 @@ static const char * const ov13858_test_pattern_menu[] = {
 #define OV13858_LINK_FREQ_INDEX_0	0
 #define OV13858_LINK_FREQ_INDEX_1	1
 
+/*
+ * pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
+ * data rate => double data rate; number of lanes => 4; bits per pixel => 10
+ */
+#define LINK_FREQ_TO_PIXEL_RATE(f)	(((f) * 2 * 4) / 10)
+
 /* Menu items for LINK_FREQ V4L2 control */
 static const s64 link_freq_menu_items[OV13858_NUM_OF_LINK_FREQS] = {
 	OV13858_LINK_FREQ_540MHZ,
@@ -958,8 +963,6 @@ static const s64 link_freq_menu_items[OV13858_NUM_OF_LINK_FREQS] = {
 static const struct ov13858_link_freq_config
 			link_freq_configs[OV13858_NUM_OF_LINK_FREQS] = {
 	{
-		/* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
-		.pixel_rate = (OV13858_LINK_FREQ_540MHZ * 2 * 4) / 10,
 		.pixels_per_line = OV13858_PPL_540MHZ,
 		.reg_list = {
 			.num_of_regs = ARRAY_SIZE(mipi_data_rate_1080mbps),
@@ -967,8 +970,6 @@ static const struct ov13858_link_freq_config
 		}
 	},
 	{
-		/* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
-		.pixel_rate = (OV13858_LINK_FREQ_270MHZ * 2 * 4) / 10,
 		.pixels_per_line = OV13858_PPL_270MHZ,
 		.reg_list = {
 			.num_of_regs = ARRAY_SIZE(mipi_data_rate_540mbps),
@@ -1385,6 +1386,8 @@ ov13858_set_pad_format(struct v4l2_subdev *sd,
 	s32 vblank_def;
 	s32 vblank_min;
 	s64 h_blank;
+	s64 pixel_rate;
+	s64 link_freq;
 
 	mutex_lock(&ov13858->mutex);
 
@@ -1400,9 +1403,10 @@ ov13858_set_pad_format(struct v4l2_subdev *sd,
 	} else {
 		ov13858->cur_mode = mode;
 		__v4l2_ctrl_s_ctrl(ov13858->link_freq, mode->link_freq_index);
-		__v4l2_ctrl_s_ctrl_int64(
-			ov13858->pixel_rate,
-			link_freq_configs[mode->link_freq_index].pixel_rate);
+		link_freq = link_freq_menu_items[mode->link_freq_index];
+		pixel_rate = LINK_FREQ_TO_PIXEL_RATE(link_freq);
+		__v4l2_ctrl_s_ctrl_int64(ov13858->pixel_rate, pixel_rate);
+
 		/* Update limits and set FPS to default */
 		vblank_def = ov13858->cur_mode->vts_def -
 			     ov13858->cur_mode->height;
@@ -1617,6 +1621,10 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
 	s64 exposure_max;
 	s64 vblank_def;
 	s64 vblank_min;
+	s64 hblank;
+	s64 pixel_rate_min;
+	s64 pixel_rate_max;
+	const struct ov13858_mode *mode;
 	int ret;
 
 	ctrl_hdlr = &ov13858->ctrl_handler;
@@ -1634,29 +1642,30 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
 				link_freq_menu_items);
 	ov13858->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
 
+	pixel_rate_max = LINK_FREQ_TO_PIXEL_RATE(link_freq_menu_items[0]);
+	pixel_rate_min = LINK_FREQ_TO_PIXEL_RATE(link_freq_menu_items[1]);
 	/* By default, PIXEL_RATE is read only */
 	ov13858->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov13858_ctrl_ops,
-					V4L2_CID_PIXEL_RATE, 0,
-					link_freq_configs[0].pixel_rate, 1,
-					link_freq_configs[0].pixel_rate);
+						V4L2_CID_PIXEL_RATE,
+						pixel_rate_min, pixel_rate_max,
+						1, pixel_rate_max);
 
-	vblank_def = ov13858->cur_mode->vts_def - ov13858->cur_mode->height;
-	vblank_min = ov13858->cur_mode->vts_min - ov13858->cur_mode->height;
+	mode = ov13858->cur_mode;
+	vblank_def = mode->vts_def - mode->height;
+	vblank_min = mode->vts_min - mode->height;
 	ov13858->vblank = v4l2_ctrl_new_std(
 				ctrl_hdlr, &ov13858_ctrl_ops, V4L2_CID_VBLANK,
-				vblank_min,
-				OV13858_VTS_MAX - ov13858->cur_mode->height, 1,
+				vblank_min, OV13858_VTS_MAX - mode->height, 1,
 				vblank_def);
 
+	hblank = link_freq_configs[mode->link_freq_index].pixels_per_line -
+		 mode->width;
 	ov13858->hblank = v4l2_ctrl_new_std(
 				ctrl_hdlr, &ov13858_ctrl_ops, V4L2_CID_HBLANK,
-				OV13858_PPL_540MHZ - ov13858->cur_mode->width,
-				OV13858_PPL_540MHZ - ov13858->cur_mode->width,
-				1,
-				OV13858_PPL_540MHZ - ov13858->cur_mode->width);
+				hblank, hblank, 1, hblank);
 	ov13858->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
 
-	exposure_max = ov13858->cur_mode->vts_def - 8;
+	exposure_max = mode->vts_def - 8;
 	ov13858->exposure = v4l2_ctrl_new_std(
 				ctrl_hdlr, &ov13858_ctrl_ops,
 				V4L2_CID_EXPOSURE, OV13858_EXPOSURE_MIN,
-- 
cgit v1.2.3


From 58020c9f14c8d884fd48434fbdbc659257cf46f3 Mon Sep 17 00:00:00 2001
From: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Date: Mon, 18 Sep 2017 19:47:43 -0300
Subject: [media] media: ov13858: Fix 4224x3136 video flickering at some
 vblanks

Previously, with crop (0, 0), (4255, 3167), VTS < 0xC9E was resulting in
blank frames sometimes. This appeared as video flickering. But we need VTS
< 0xC9E to get ~30fps.

Omni Vision recommends to use crop (0,8), (4255, 3159) for 4224x3136. With
this crop, VTS 0xC8E is supported and yields ~30fps.

Signed-off-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov13858.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c
index 4e331b401a71..2bd659976c30 100644
--- a/drivers/media/i2c/ov13858.c
+++ b/drivers/media/i2c/ov13858.c
@@ -237,11 +237,11 @@ static const struct ov13858_reg mode_4224x3136_regs[] = {
 	{0x3800, 0x00},
 	{0x3801, 0x00},
 	{0x3802, 0x00},
-	{0x3803, 0x00},
+	{0x3803, 0x08},
 	{0x3804, 0x10},
 	{0x3805, 0x9f},
 	{0x3806, 0x0c},
-	{0x3807, 0x5f},
+	{0x3807, 0x57},
 	{0x3808, 0x10},
 	{0x3809, 0x80},
 	{0x380a, 0x0c},
-- 
cgit v1.2.3


From 880d45f8fcbacfa239533151f324210975698e0e Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Thu, 21 Sep 2017 11:24:53 -0300
Subject: [media] ov13858: Use do_div() for dividing a 64-bit number

ov13858 contained a 64-bit division. Use do_div() for calculating it.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov13858.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c
index 2bd659976c30..fdce2befed02 100644
--- a/drivers/media/i2c/ov13858.c
+++ b/drivers/media/i2c/ov13858.c
@@ -951,7 +951,13 @@ static const char * const ov13858_test_pattern_menu[] = {
  * pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
  * data rate => double data rate; number of lanes => 4; bits per pixel => 10
  */
-#define LINK_FREQ_TO_PIXEL_RATE(f)	(((f) * 2 * 4) / 10)
+static u64 link_freq_to_pixel_rate(u64 f)
+{
+	f *= 2 * 4;
+	do_div(f, 10);
+
+	return f;
+}
 
 /* Menu items for LINK_FREQ V4L2 control */
 static const s64 link_freq_menu_items[OV13858_NUM_OF_LINK_FREQS] = {
@@ -1404,7 +1410,7 @@ ov13858_set_pad_format(struct v4l2_subdev *sd,
 		ov13858->cur_mode = mode;
 		__v4l2_ctrl_s_ctrl(ov13858->link_freq, mode->link_freq_index);
 		link_freq = link_freq_menu_items[mode->link_freq_index];
-		pixel_rate = LINK_FREQ_TO_PIXEL_RATE(link_freq);
+		pixel_rate = link_freq_to_pixel_rate(link_freq);
 		__v4l2_ctrl_s_ctrl_int64(ov13858->pixel_rate, pixel_rate);
 
 		/* Update limits and set FPS to default */
@@ -1642,8 +1648,8 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
 				link_freq_menu_items);
 	ov13858->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
 
-	pixel_rate_max = LINK_FREQ_TO_PIXEL_RATE(link_freq_menu_items[0]);
-	pixel_rate_min = LINK_FREQ_TO_PIXEL_RATE(link_freq_menu_items[1]);
+	pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]);
+	pixel_rate_min = link_freq_to_pixel_rate(link_freq_menu_items[1]);
 	/* By default, PIXEL_RATE is read only */
 	ov13858->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov13858_ctrl_ops,
 						V4L2_CID_PIXEL_RATE,
-- 
cgit v1.2.3


From d339ec6a4261c030d8fdea75625c925f33549a2e Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Tue, 29 Aug 2017 09:41:22 -0300
Subject: [media] smiapp: Fix error handling in power on sequence

The error handling code in smiapp_power_on() returned in case of a failed
I2C write instead of cleaning up the mess. Fix this.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/smiapp/smiapp-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 700f433261d0..d581625d7826 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -1313,7 +1313,7 @@ static int smiapp_power_on(struct device *dev)
 	rval = smiapp_write(sensor, SMIAPP_REG_U8_DPHY_CTRL,
 			    SMIAPP_DPHY_CTRL_UI);
 	if (rval < 0)
-		return rval;
+		goto out_cci_addr_fail;
 
 	rval = smiapp_call_quirk(sensor, post_poweron);
 	if (rval) {
-- 
cgit v1.2.3


From f689866aec08f00efc4a098d14b3a17ec8a9193b Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Tue, 29 Aug 2017 09:41:23 -0300
Subject: [media] smiapp: Verify clock frequency after setting it, prevent
 changing it

The external clock frequency was set by the driver but the obtained
frequency was never verified. Do that.

Being able to obtain the exact frequency is important as the value is used
for PLL calculations which may result in frequencies that violate the PLL
tree limits.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/smiapp/smiapp-core.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index d581625d7826..55771826b446 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -2870,6 +2870,7 @@ static int smiapp_probe(struct i2c_client *client,
 {
 	struct smiapp_sensor *sensor;
 	struct smiapp_hwconfig *hwcfg = smiapp_get_hwconfig(&client->dev);
+	unsigned long rate;
 	unsigned int i;
 	int rval;
 
@@ -2908,6 +2909,14 @@ static int smiapp_probe(struct i2c_client *client,
 		return rval;
 	}
 
+	rate = clk_get_rate(sensor->ext_clk);
+	if (rate != sensor->hwcfg->ext_clk) {
+		dev_err(&client->dev,
+			"can't set clock freq, asked for %u but got %lu\n",
+			sensor->hwcfg->ext_clk, rate);
+		return rval;
+	}
+
 	sensor->xshutdown = devm_gpiod_get_optional(&client->dev, "xshutdown",
 						    GPIOD_OUT_LOW);
 	if (IS_ERR(sensor->xshutdown))
-- 
cgit v1.2.3


From de10c1619c489d1ecaf6b478ef9f5057d946a710 Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Tue, 29 Aug 2017 09:41:24 -0300
Subject: [media] smiapp: Get clock rate if it's not available through DT

Obtain the clock rate from the clock framework if it's not available
through DT. The assumption is that the parent device (camera module)
defines the rate as clock control is a part of the power on and power off
sequences --- which are camera module specific.

Also use the clock rate from DT if no clock is provided.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/smiapp/smiapp-core.c | 52 +++++++++++++++++++++-------------
 1 file changed, 33 insertions(+), 19 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 55771826b446..009b5e26204b 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -2829,12 +2829,10 @@ static struct smiapp_hwconfig *smiapp_get_hwconfig(struct device *dev)
 	/* NVM size is not mandatory */
 	fwnode_property_read_u32(fwnode, "nokia,nvm-size", &hwcfg->nvm_size);
 
-	rval = fwnode_property_read_u32(fwnode, "clock-frequency",
+	rval = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
 					&hwcfg->ext_clk);
-	if (rval) {
-		dev_warn(dev, "can't get clock-frequency\n");
-		goto out_err;
-	}
+	if (rval)
+		dev_info(dev, "can't get clock-frequency\n");
 
 	dev_dbg(dev, "nvm %d, clk %d, mode %d\n",
 		hwcfg->nvm_size, hwcfg->ext_clk, hwcfg->csi_signalling_mode);
@@ -2870,7 +2868,6 @@ static int smiapp_probe(struct i2c_client *client,
 {
 	struct smiapp_sensor *sensor;
 	struct smiapp_hwconfig *hwcfg = smiapp_get_hwconfig(&client->dev);
-	unsigned long rate;
 	unsigned int i;
 	int rval;
 
@@ -2901,20 +2898,37 @@ static int smiapp_probe(struct i2c_client *client,
 		return -EPROBE_DEFER;
 	}
 
-	rval = clk_set_rate(sensor->ext_clk, sensor->hwcfg->ext_clk);
-	if (rval < 0) {
-		dev_err(&client->dev,
-			"unable to set clock freq to %u\n",
-			sensor->hwcfg->ext_clk);
-		return rval;
-	}
+	if (sensor->ext_clk) {
+		if (sensor->hwcfg->ext_clk) {
+			unsigned long rate;
 
-	rate = clk_get_rate(sensor->ext_clk);
-	if (rate != sensor->hwcfg->ext_clk) {
-		dev_err(&client->dev,
-			"can't set clock freq, asked for %u but got %lu\n",
-			sensor->hwcfg->ext_clk, rate);
-		return rval;
+			rval = clk_set_rate(sensor->ext_clk,
+					    sensor->hwcfg->ext_clk);
+			if (rval < 0) {
+				dev_err(&client->dev,
+					"unable to set clock freq to %u\n",
+					sensor->hwcfg->ext_clk);
+				return rval;
+			}
+
+			rate = clk_get_rate(sensor->ext_clk);
+			if (rate != sensor->hwcfg->ext_clk) {
+				dev_err(&client->dev,
+					"can't set clock freq, asked for %u but got %lu\n",
+					sensor->hwcfg->ext_clk, rate);
+				return rval;
+			}
+		} else {
+			sensor->hwcfg->ext_clk = clk_get_rate(sensor->ext_clk);
+			dev_dbg(&client->dev, "obtained clock freq %u\n",
+				sensor->hwcfg->ext_clk);
+		}
+	} else if (sensor->hwcfg->ext_clk) {
+		dev_dbg(&client->dev, "assuming clock freq %u\n",
+			sensor->hwcfg->ext_clk);
+	} else {
+		dev_err(&client->dev, "unable to obtain clock freq\n");
+		return -EINVAL;
 	}
 
 	sensor->xshutdown = devm_gpiod_get_optional(&client->dev, "xshutdown",
-- 
cgit v1.2.3


From ccec44cc910d1fa94690e0b9f07194be3421cb1a Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Tue, 29 Aug 2017 09:41:25 -0300
Subject: [media] smiapp: Make clock control optional

The clock control is not explicitly controlled by the driver in two cases:
ACPI based systems and when the clock is part of the power sequence of the
camera module.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/smiapp/smiapp-core.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 009b5e26204b..fbd851be51d2 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -2892,7 +2892,10 @@ static int smiapp_probe(struct i2c_client *client,
 	}
 
 	sensor->ext_clk = devm_clk_get(&client->dev, NULL);
-	if (IS_ERR(sensor->ext_clk)) {
+	if (PTR_ERR(sensor->ext_clk) == -ENOENT) {
+		dev_info(&client->dev, "no clock defined, continuing...\n");
+		sensor->ext_clk = NULL;
+	} else if (IS_ERR(sensor->ext_clk)) {
 		dev_err(&client->dev, "could not get clock (%ld)\n",
 			PTR_ERR(sensor->ext_clk));
 		return -EPROBE_DEFER;
-- 
cgit v1.2.3


From 72eaf99f0471d7e03e46f0d87770626430995df2 Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Fri, 29 Sep 2017 11:54:10 +0200
Subject: media: smiapp: Use __v4l2_ctrl_handler_setup()

Use unlocked __v4l2_ctrl_handler_setup() in order to make the
control setup atomic.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/smiapp/smiapp-core.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index fbd851be51d2..8de444080b8f 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -1325,24 +1325,28 @@ static int smiapp_power_on(struct device *dev)
 	if (!sensor->pixel_array)
 		return 0;
 
-	rval = v4l2_ctrl_handler_setup(&sensor->pixel_array->ctrl_handler);
+	mutex_lock(&sensor->mutex);
+
+	rval = __v4l2_ctrl_handler_setup(&sensor->pixel_array->ctrl_handler);
 	if (rval)
-		goto out_cci_addr_fail;
+		goto out_unlock;
 
-	rval = v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler);
+	rval = __v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler);
 	if (rval)
-		goto out_cci_addr_fail;
+		goto out_unlock;
 
-	mutex_lock(&sensor->mutex);
 	rval = smiapp_update_mode(sensor);
-	mutex_unlock(&sensor->mutex);
 	if (rval < 0)
-		goto out_cci_addr_fail;
+		goto out_unlock;
+
+	mutex_unlock(&sensor->mutex);
 
 	return 0;
 
-out_cci_addr_fail:
+out_unlock:
+	mutex_unlock(&sensor->mutex);
 
+out_cci_addr_fail:
 	gpiod_set_value(sensor->xshutdown, 0);
 	clk_disable_unprepare(sensor->ext_clk);
 
-- 
cgit v1.2.3


From 6771fce5060e10f6c878b5d644e9d66dd7f68950 Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Fri, 29 Sep 2017 12:23:56 +0200
Subject: media: smiapp: Rely on runtime PM

Instead of relying on a mix of runtime PM and the s_power() callback, drop
the s_power() callback altogether and use runtime PM solely.

As device access is required during device power-on and power-off
sequences, runtime PM alone cannot tell whether the device is available.
Thus the "active" field is introduced in struct smiapp_sensor to tell
whether it is safe to write to the device.

Consequently there is no need to power on the device whenever a file
handle is open. This functionality is removed as well. The user may still
control the device power management through sysfs. Autosuspend remains
enabled, with 1 s delay.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/smiapp/smiapp-core.c | 101 ++++++++++++---------------------
 drivers/media/i2c/smiapp/smiapp-regs.c |   3 +
 drivers/media/i2c/smiapp/smiapp.h      |   1 +
 3 files changed, 40 insertions(+), 65 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 8de444080b8f..faf567569799 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -1239,6 +1239,10 @@ static int smiapp_power_on(struct device *dev)
 	sleep = SMIAPP_RESET_DELAY(sensor->hwcfg->ext_clk);
 	usleep_range(sleep, sleep);
 
+	mutex_lock(&sensor->mutex);
+
+	sensor->active = true;
+
 	/*
 	 * Failures to respond to the address change command have been noticed.
 	 * Those failures seem to be caused by the sensor requiring a longer
@@ -1321,32 +1325,28 @@ static int smiapp_power_on(struct device *dev)
 		goto out_cci_addr_fail;
 	}
 
-	/* Are we still initialising...? If yes, return here. */
-	if (!sensor->pixel_array)
-		return 0;
-
-	mutex_lock(&sensor->mutex);
-
-	rval = __v4l2_ctrl_handler_setup(&sensor->pixel_array->ctrl_handler);
-	if (rval)
-		goto out_unlock;
+	/* Are we still initialising...? If not, proceed with control setup. */
+	if (sensor->pixel_array) {
+		rval = __v4l2_ctrl_handler_setup(
+			&sensor->pixel_array->ctrl_handler);
+		if (rval)
+			goto out_cci_addr_fail;
 
-	rval = __v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler);
-	if (rval)
-		goto out_unlock;
+		rval = __v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler);
+		if (rval)
+			goto out_cci_addr_fail;
 
-	rval = smiapp_update_mode(sensor);
-	if (rval < 0)
-		goto out_unlock;
+		rval = smiapp_update_mode(sensor);
+		if (rval < 0)
+			goto out_cci_addr_fail;
+	}
 
 	mutex_unlock(&sensor->mutex);
 
 	return 0;
 
-out_unlock:
-	mutex_unlock(&sensor->mutex);
-
 out_cci_addr_fail:
+	mutex_unlock(&sensor->mutex);
 	gpiod_set_value(sensor->xshutdown, 0);
 	clk_disable_unprepare(sensor->ext_clk);
 
@@ -1364,6 +1364,8 @@ static int smiapp_power_off(struct device *dev)
 	struct smiapp_sensor *sensor =
 		container_of(ssd, struct smiapp_sensor, ssds[0]);
 
+	mutex_lock(&sensor->mutex);
+
 	/*
 	 * Currently power/clock to lens are enable/disabled separately
 	 * but they are essentially the same signals. So if the sensor is
@@ -1376,6 +1378,10 @@ static int smiapp_power_off(struct device *dev)
 			     SMIAPP_REG_U8_SOFTWARE_RESET,
 			     SMIAPP_SOFTWARE_RESET);
 
+	sensor->active = false;
+
+	mutex_unlock(&sensor->mutex);
+
 	gpiod_set_value(sensor->xshutdown, 0);
 	clk_disable_unprepare(sensor->ext_clk);
 	usleep_range(5000, 5000);
@@ -1385,29 +1391,6 @@ static int smiapp_power_off(struct device *dev)
 	return 0;
 }
 
-static int smiapp_set_power(struct v4l2_subdev *subdev, int on)
-{
-	int rval;
-
-	if (!on) {
-		pm_runtime_mark_last_busy(subdev->dev);
-		pm_runtime_put_autosuspend(subdev->dev);
-
-		return 0;
-	}
-
-	rval = pm_runtime_get_sync(subdev->dev);
-	if (rval >= 0)
-		return 0;
-
-	if (rval != -EBUSY && rval != -EAGAIN)
-		pm_runtime_set_active(subdev->dev);
-
-	pm_runtime_put(subdev->dev);
-
-	return rval;
-}
-
 /* -----------------------------------------------------------------------------
  * Video stream management
  */
@@ -1564,19 +1547,31 @@ out:
 static int smiapp_set_stream(struct v4l2_subdev *subdev, int enable)
 {
 	struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
+	struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
 	int rval;
 
 	if (sensor->streaming == enable)
 		return 0;
 
 	if (enable) {
+		rval = pm_runtime_get_sync(&client->dev);
+		if (rval < 0) {
+			if (rval != -EBUSY && rval != -EAGAIN)
+				pm_runtime_set_active(&client->dev);
+			pm_runtime_put(&client->dev);
+			return rval;
+		}
+
 		sensor->streaming = true;
+
 		rval = smiapp_start_streaming(sensor);
 		if (rval < 0)
 			sensor->streaming = false;
 	} else {
 		rval = smiapp_stop_streaming(sensor);
 		sensor->streaming = false;
+		pm_runtime_mark_last_busy(&client->dev);
+		pm_runtime_put_autosuspend(&client->dev);
 	}
 
 	return rval;
@@ -2654,7 +2649,6 @@ static int smiapp_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
 	struct smiapp_subdev *ssd = to_smiapp_subdev(sd);
 	struct smiapp_sensor *sensor = ssd->sensor;
 	unsigned int i;
-	int rval;
 
 	mutex_lock(&sensor->mutex);
 
@@ -2681,22 +2675,6 @@ static int smiapp_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
 
 	mutex_unlock(&sensor->mutex);
 
-	rval = pm_runtime_get_sync(sd->dev);
-	if (rval >= 0)
-		return 0;
-
-	if (rval != -EBUSY && rval != -EAGAIN)
-		pm_runtime_set_active(sd->dev);
-	pm_runtime_put(sd->dev);
-
-	return rval;
-}
-
-static int smiapp_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
-{
-	pm_runtime_mark_last_busy(sd->dev);
-	pm_runtime_put_autosuspend(sd->dev);
-
 	return 0;
 }
 
@@ -2704,10 +2682,6 @@ static const struct v4l2_subdev_video_ops smiapp_video_ops = {
 	.s_stream = smiapp_set_stream,
 };
 
-static const struct v4l2_subdev_core_ops smiapp_core_ops = {
-	.s_power = smiapp_set_power,
-};
-
 static const struct v4l2_subdev_pad_ops smiapp_pad_ops = {
 	.enum_mbus_code = smiapp_enum_mbus_code,
 	.get_fmt = smiapp_get_format,
@@ -2722,7 +2696,6 @@ static const struct v4l2_subdev_sensor_ops smiapp_sensor_ops = {
 };
 
 static const struct v4l2_subdev_ops smiapp_ops = {
-	.core = &smiapp_core_ops,
 	.video = &smiapp_video_ops,
 	.pad = &smiapp_pad_ops,
 	.sensor = &smiapp_sensor_ops,
@@ -2736,12 +2709,10 @@ static const struct v4l2_subdev_internal_ops smiapp_internal_src_ops = {
 	.registered = smiapp_registered,
 	.unregistered = smiapp_unregistered,
 	.open = smiapp_open,
-	.close = smiapp_close,
 };
 
 static const struct v4l2_subdev_internal_ops smiapp_internal_ops = {
 	.open = smiapp_open,
-	.close = smiapp_close,
 };
 
 /* -----------------------------------------------------------------------------
diff --git a/drivers/media/i2c/smiapp/smiapp-regs.c b/drivers/media/i2c/smiapp/smiapp-regs.c
index d6779e35d36f..145653dc81da 100644
--- a/drivers/media/i2c/smiapp/smiapp-regs.c
+++ b/drivers/media/i2c/smiapp/smiapp-regs.c
@@ -231,6 +231,9 @@ int smiapp_write_no_quirk(struct smiapp_sensor *sensor, u32 reg, u32 val)
 	     len != SMIAPP_REG_32BIT) || flags)
 		return -EINVAL;
 
+	if (!sensor->active)
+		return 0;
+
 	msg.addr = client->addr;
 	msg.flags = 0; /* Write */
 	msg.len = 2 + len;
diff --git a/drivers/media/i2c/smiapp/smiapp.h b/drivers/media/i2c/smiapp/smiapp.h
index f74d695018b9..e6a5ab402d7f 100644
--- a/drivers/media/i2c/smiapp/smiapp.h
+++ b/drivers/media/i2c/smiapp/smiapp.h
@@ -206,6 +206,7 @@ struct smiapp_sensor {
 
 	u8 hvflip_inv_mask; /* H/VFLIP inversion due to sensor orientation */
 	u8 frame_skip;
+	bool active; /* is the sensor powered on? */
 	u16 embedded_start; /* embedded data start line */
 	u16 embedded_end;
 	u16 image_start; /* image data start line */
-- 
cgit v1.2.3


From 3863d4bb554fdbe8cc521ad5653593923edc405b Mon Sep 17 00:00:00 2001
From: Jacob Chen <jacob-chen@iotwrt.com>
Date: Mon, 18 Sep 2017 06:00:51 +0200
Subject: media: i2c: tc358743: fix spelling mistake

It should be "LP-11".

Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/tc358743.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index a9355032076f..6c59a460647f 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -1649,7 +1649,7 @@ static int tc358743_s_stream(struct v4l2_subdev *sd, int enable)
 {
 	enable_stream(sd, enable);
 	if (!enable) {
-		/* Put all lanes in PL-11 state (STOPSTATE) */
+		/* Put all lanes in LP-11 state (STOPSTATE) */
 		tc358743_set_csi(sd);
 	}
 
-- 
cgit v1.2.3


From 7996e5c47fc01ca4bd94b40ba4585054f1d69b0e Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 28 Sep 2017 15:03:54 +0200
Subject: media: tc358743: remove an unneeded condition

We can remove the check for if "state->cec_adap" is NULL.  The
cec_allocate_adapter() function never returns NULL and also we verified
that "state->cec_adap" is an error pointer.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/tc358743.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index 6c59a460647f..cd995e6a98ef 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -2122,7 +2122,7 @@ static int tc358743_probe(struct i2c_client *client,
 		state, dev_name(&client->dev),
 		CEC_CAP_DEFAULTS | CEC_CAP_MONITOR_ALL, CEC_MAX_LOG_ADDRS);
 	if (IS_ERR(state->cec_adap)) {
-		err = state->cec_adap ? PTR_ERR(state->cec_adap) : -ENOMEM;
+		err = PTR_ERR(state->cec_adap);
 		goto err_hdl;
 	}
 	irq_mask |= MASK_CEC_RMSK | MASK_CEC_TMSK;
-- 
cgit v1.2.3


From f7480ad0d458b74a9a1a882b56917e4695ffed1f Mon Sep 17 00:00:00 2001
From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Thu, 21 Sep 2017 17:32:11 +0200
Subject: media: tc358743: set entity function to video interface bridge

The TC358743 is an HDMI to MIPI CSI2-2 bridge.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/tc358743.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index cd995e6a98ef..0b65096613d9 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -2101,6 +2101,7 @@ static int tc358743_probe(struct i2c_client *client,
 	}
 
 	state->pad.flags = MEDIA_PAD_FL_SOURCE;
+	sd->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
 	err = media_entity_pads_init(&sd->entity, 1, &state->pad);
 	if (err < 0)
 		goto err_hdl;
-- 
cgit v1.2.3


From 0985dd306f727df6c0e71cd8a8eda93e8fa5206e Mon Sep 17 00:00:00 2001
From: Leon Luo <leonl@leopardimaging.com>
Date: Thu, 5 Oct 2017 02:06:21 +0200
Subject: media: imx274: V4l2 driver for Sony imx274 CMOS sensor
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The imx274 is a Sony CMOS image sensor that has 1/2.5 image size.
It supports up to 3840x2160 (4K) 60fps, 1080p 120fps. The interface
is 4-lane MIPI CSI-2 running at 1.44Gbps each.

This driver has been tested on Xilinx ZCU102 platform with a Leopard
LI-IMX274MIPI-FMC camera board.

Support for the following features:
-Resolutions: 3840x2160, 1920x1080, 1280x720
-Frame rate: 3840x2160 : 5 – 60fps
            1920x1080 : 5 – 120fps
            1280x720 : 5 – 120fps
-Exposure time: 16 – (frame interval) micro-seconds
-Gain: 1x - 180x
-VFLIP: enable/disabledrivers/media/i2c/imx274.c
-Test pattern: 12 test patterns

Signed-off-by: Leon Luo <leonl@leopardimaging.com>
Tested-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/Kconfig  |    8 +
 drivers/media/i2c/Makefile |    1 +
 drivers/media/i2c/imx274.c | 1811 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 1820 insertions(+)
 create mode 100644 drivers/media/i2c/imx274.c

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index 47113774a297..3c6d6428f525 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -555,6 +555,14 @@ config VIDEO_APTINA_PLL
 config VIDEO_SMIAPP_PLL
 	tristate
 
+config VIDEO_IMX274
+	tristate "Sony IMX274 sensor support"
+	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+	depends on MEDIA_CAMERA_SUPPORT
+	---help---
+	  This is a V4L2 sensor-level driver for the Sony IMX274
+	  CMOS image sensor.
+
 config VIDEO_OV2640
 	tristate "OmniVision OV2640 sensor support"
 	depends on VIDEO_V4L2 && I2C
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index c843c181dfb9..f8d57e453936 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -92,5 +92,6 @@ obj-$(CONFIG_VIDEO_IR_I2C)  += ir-kbd-i2c.o
 obj-$(CONFIG_VIDEO_ML86V7667)	+= ml86v7667.o
 obj-$(CONFIG_VIDEO_OV2659)	+= ov2659.o
 obj-$(CONFIG_VIDEO_TC358743)	+= tc358743.o
+obj-$(CONFIG_VIDEO_IMX274)	+= imx274.o
 
 obj-$(CONFIG_SDR_MAX2175) += max2175.o
diff --git a/drivers/media/i2c/imx274.c b/drivers/media/i2c/imx274.c
new file mode 100644
index 000000000000..ab6a5f31da74
--- /dev/null
+++ b/drivers/media/i2c/imx274.c
@@ -0,0 +1,1811 @@
+/*
+ * imx274.c - IMX274 CMOS Image Sensor driver
+ *
+ * Copyright (C) 2017, Leopard Imaging, Inc.
+ *
+ * Leon Luo <leonl@leopardimaging.com>
+ * Edwin Zou <edwinz@leopardimaging.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of_gpio.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/v4l2-mediabus.h>
+#include <linux/videodev2.h>
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+
+/*
+ * See "SHR, SVR Setting" in datasheet
+ */
+#define IMX274_DEFAULT_FRAME_LENGTH		(4550)
+#define IMX274_MAX_FRAME_LENGTH			(0x000fffff)
+
+/*
+ * See "Frame Rate Adjustment" in datasheet
+ */
+#define IMX274_PIXCLK_CONST1			(72000000)
+#define IMX274_PIXCLK_CONST2			(1000000)
+
+/*
+ * The input gain is shifted by IMX274_GAIN_SHIFT to get
+ * decimal number. The real gain is
+ * (float)input_gain_value / (1 << IMX274_GAIN_SHIFT)
+ */
+#define IMX274_GAIN_SHIFT			(8)
+#define IMX274_GAIN_SHIFT_MASK			((1 << IMX274_GAIN_SHIFT) - 1)
+
+/*
+ * See "Analog Gain" and "Digital Gain" in datasheet
+ * min gain is 1X
+ * max gain is calculated based on IMX274_GAIN_REG_MAX
+ */
+#define IMX274_GAIN_REG_MAX			(1957)
+#define IMX274_MIN_GAIN				(0x01 << IMX274_GAIN_SHIFT)
+#define IMX274_MAX_ANALOG_GAIN			((2048 << IMX274_GAIN_SHIFT)\
+					/ (2048 - IMX274_GAIN_REG_MAX))
+#define IMX274_MAX_DIGITAL_GAIN			(8)
+#define IMX274_DEF_GAIN				(20 << IMX274_GAIN_SHIFT)
+#define IMX274_GAIN_CONST			(2048) /* for gain formula */
+
+/*
+ * 1 line time in us = (HMAX / 72), minimal is 4 lines
+ */
+#define IMX274_MIN_EXPOSURE_TIME		(4 * 260 / 72)
+
+#define IMX274_DEFAULT_MODE			IMX274_MODE_3840X2160
+#define IMX274_MAX_WIDTH			(3840)
+#define IMX274_MAX_HEIGHT			(2160)
+#define IMX274_MAX_FRAME_RATE			(120)
+#define IMX274_MIN_FRAME_RATE			(5)
+#define IMX274_DEF_FRAME_RATE			(60)
+
+/*
+ * register SHR is limited to (SVR value + 1) x VMAX value - 4
+ */
+#define IMX274_SHR_LIMIT_CONST			(4)
+
+/*
+ * Constants for sensor reset delay
+ */
+#define IMX274_RESET_DELAY1			(2000)
+#define IMX274_RESET_DELAY2			(2200)
+
+/*
+ * shift and mask constants
+ */
+#define IMX274_SHIFT_8_BITS			(8)
+#define IMX274_SHIFT_16_BITS			(16)
+#define IMX274_MASK_LSB_2_BITS			(0x03)
+#define IMX274_MASK_LSB_3_BITS			(0x07)
+#define IMX274_MASK_LSB_4_BITS			(0x0f)
+#define IMX274_MASK_LSB_8_BITS			(0x00ff)
+
+#define DRIVER_NAME "IMX274"
+
+/*
+ * IMX274 register definitions
+ */
+#define IMX274_FRAME_LENGTH_ADDR_1		0x30FA /* VMAX, MSB */
+#define IMX274_FRAME_LENGTH_ADDR_2		0x30F9 /* VMAX */
+#define IMX274_FRAME_LENGTH_ADDR_3		0x30F8 /* VMAX, LSB */
+#define IMX274_SVR_REG_MSB			0x300F /* SVR */
+#define IMX274_SVR_REG_LSB			0x300E /* SVR */
+#define IMX274_HMAX_REG_MSB			0x30F7 /* HMAX */
+#define IMX274_HMAX_REG_LSB			0x30F6 /* HMAX */
+#define IMX274_COARSE_TIME_ADDR_MSB		0x300D /* SHR */
+#define IMX274_COARSE_TIME_ADDR_LSB		0x300C /* SHR */
+#define IMX274_ANALOG_GAIN_ADDR_LSB		0x300A /* ANALOG GAIN LSB */
+#define IMX274_ANALOG_GAIN_ADDR_MSB		0x300B /* ANALOG GAIN MSB */
+#define IMX274_DIGITAL_GAIN_REG			0x3012 /* Digital Gain */
+#define IMX274_VFLIP_REG			0x301A /* VERTICAL FLIP */
+#define IMX274_TEST_PATTERN_REG			0x303D /* TEST PATTERN */
+#define IMX274_STANDBY_REG			0x3000 /* STANDBY */
+
+#define IMX274_TABLE_WAIT_MS			0
+#define IMX274_TABLE_END			1
+
+/*
+ * imx274 I2C operation related structure
+ */
+struct reg_8 {
+	u16 addr;
+	u8 val;
+};
+
+static const struct regmap_config imx274_regmap_config = {
+	.reg_bits = 16,
+	.val_bits = 8,
+	.cache_type = REGCACHE_RBTREE,
+};
+
+enum imx274_mode {
+	IMX274_MODE_3840X2160,
+	IMX274_MODE_1920X1080,
+	IMX274_MODE_1280X720,
+
+	IMX274_MODE_START_STREAM_1,
+	IMX274_MODE_START_STREAM_2,
+	IMX274_MODE_START_STREAM_3,
+	IMX274_MODE_START_STREAM_4,
+	IMX274_MODE_STOP_STREAM
+};
+
+/*
+ * imx274 format related structure
+ */
+struct imx274_frmfmt {
+	u32 mbus_code;
+	enum v4l2_colorspace colorspace;
+	struct v4l2_frmsize_discrete size;
+	enum imx274_mode mode;
+};
+
+/*
+ * imx274 test pattern related structure
+ */
+enum {
+	TEST_PATTERN_DISABLED = 0,
+	TEST_PATTERN_ALL_000H,
+	TEST_PATTERN_ALL_FFFH,
+	TEST_PATTERN_ALL_555H,
+	TEST_PATTERN_ALL_AAAH,
+	TEST_PATTERN_VSP_5AH, /* VERTICAL STRIPE PATTERN 555H/AAAH */
+	TEST_PATTERN_VSP_A5H, /* VERTICAL STRIPE PATTERN AAAH/555H */
+	TEST_PATTERN_VSP_05H, /* VERTICAL STRIPE PATTERN 000H/555H */
+	TEST_PATTERN_VSP_50H, /* VERTICAL STRIPE PATTERN 555H/000H */
+	TEST_PATTERN_VSP_0FH, /* VERTICAL STRIPE PATTERN 000H/FFFH */
+	TEST_PATTERN_VSP_F0H, /* VERTICAL STRIPE PATTERN FFFH/000H */
+	TEST_PATTERN_H_COLOR_BARS,
+	TEST_PATTERN_V_COLOR_BARS,
+};
+
+static const char * const tp_qmenu[] = {
+	"Disabled",
+	"All 000h Pattern",
+	"All FFFh Pattern",
+	"All 555h Pattern",
+	"All AAAh Pattern",
+	"Vertical Stripe (555h / AAAh)",
+	"Vertical Stripe (AAAh / 555h)",
+	"Vertical Stripe (000h / 555h)",
+	"Vertical Stripe (555h / 000h)",
+	"Vertical Stripe (000h / FFFh)",
+	"Vertical Stripe (FFFh / 000h)",
+	"Horizontal Color Bars",
+	"Vertical Color Bars",
+};
+
+/*
+ * All-pixel scan mode (10-bit)
+ * imx274 mode1(refer to datasheet) register configuration with
+ * 3840x2160 resolution, raw10 data and mipi four lane output
+ */
+static const struct reg_8 imx274_mode1_3840x2160_raw10[] = {
+	{0x3004, 0x01},
+	{0x3005, 0x01},
+	{0x3006, 0x00},
+	{0x3007, 0x02},
+
+	{0x3018, 0xA2}, /* output XVS, HVS */
+
+	{0x306B, 0x05},
+	{0x30E2, 0x01},
+	{0x30F6, 0x07}, /* HMAX, 263 */
+	{0x30F7, 0x01}, /* HMAX */
+
+	{0x30dd, 0x01}, /* crop to 2160 */
+	{0x30de, 0x06},
+	{0x30df, 0x00},
+	{0x30e0, 0x12},
+	{0x30e1, 0x00},
+	{0x3037, 0x01}, /* to crop to 3840 */
+	{0x3038, 0x0c},
+	{0x3039, 0x00},
+	{0x303a, 0x0c},
+	{0x303b, 0x0f},
+
+	{0x30EE, 0x01},
+	{0x3130, 0x86},
+	{0x3131, 0x08},
+	{0x3132, 0x7E},
+	{0x3133, 0x08},
+	{0x3342, 0x0A},
+	{0x3343, 0x00},
+	{0x3344, 0x16},
+	{0x3345, 0x00},
+	{0x33A6, 0x01},
+	{0x3528, 0x0E},
+	{0x3554, 0x1F},
+	{0x3555, 0x01},
+	{0x3556, 0x01},
+	{0x3557, 0x01},
+	{0x3558, 0x01},
+	{0x3559, 0x00},
+	{0x355A, 0x00},
+	{0x35BA, 0x0E},
+	{0x366A, 0x1B},
+	{0x366B, 0x1A},
+	{0x366C, 0x19},
+	{0x366D, 0x17},
+	{0x3A41, 0x08},
+
+	{IMX274_TABLE_END, 0x00}
+};
+
+/*
+ * Horizontal/vertical 2/2-line binning
+ * (Horizontal and vertical weightedbinning, 10-bit)
+ * imx274 mode3(refer to datasheet) register configuration with
+ * 1920x1080 resolution, raw10 data and mipi four lane output
+ */
+static const struct reg_8 imx274_mode3_1920x1080_raw10[] = {
+	{0x3004, 0x02},
+	{0x3005, 0x21},
+	{0x3006, 0x00},
+	{0x3007, 0x11},
+
+	{0x3018, 0xA2}, /* output XVS, HVS */
+
+	{0x306B, 0x05},
+	{0x30E2, 0x02},
+
+	{0x30F6, 0x04}, /* HMAX, 260 */
+	{0x30F7, 0x01}, /* HMAX */
+
+	{0x30dd, 0x01}, /* to crop to 1920x1080 */
+	{0x30de, 0x05},
+	{0x30df, 0x00},
+	{0x30e0, 0x04},
+	{0x30e1, 0x00},
+	{0x3037, 0x01},
+	{0x3038, 0x0c},
+	{0x3039, 0x00},
+	{0x303a, 0x0c},
+	{0x303b, 0x0f},
+
+	{0x30EE, 0x01},
+	{0x3130, 0x4E},
+	{0x3131, 0x04},
+	{0x3132, 0x46},
+	{0x3133, 0x04},
+	{0x3342, 0x0A},
+	{0x3343, 0x00},
+	{0x3344, 0x1A},
+	{0x3345, 0x00},
+	{0x33A6, 0x01},
+	{0x3528, 0x0E},
+	{0x3554, 0x00},
+	{0x3555, 0x01},
+	{0x3556, 0x01},
+	{0x3557, 0x01},
+	{0x3558, 0x01},
+	{0x3559, 0x00},
+	{0x355A, 0x00},
+	{0x35BA, 0x0E},
+	{0x366A, 0x1B},
+	{0x366B, 0x1A},
+	{0x366C, 0x19},
+	{0x366D, 0x17},
+	{0x3A41, 0x08},
+
+	{IMX274_TABLE_END, 0x00}
+};
+
+/*
+ * Vertical 2/3 subsampling binning horizontal 3 binning
+ * imx274 mode5(refer to datasheet) register configuration with
+ * 1280x720 resolution, raw10 data and mipi four lane output
+ */
+static const struct reg_8 imx274_mode5_1280x720_raw10[] = {
+	{0x3004, 0x03},
+	{0x3005, 0x31},
+	{0x3006, 0x00},
+	{0x3007, 0x09},
+
+	{0x3018, 0xA2}, /* output XVS, HVS */
+
+	{0x306B, 0x05},
+	{0x30E2, 0x03},
+
+	{0x30F6, 0x04}, /* HMAX, 260 */
+	{0x30F7, 0x01}, /* HMAX */
+
+	{0x30DD, 0x01},
+	{0x30DE, 0x07},
+	{0x30DF, 0x00},
+	{0x40E0, 0x04},
+	{0x30E1, 0x00},
+	{0x3030, 0xD4},
+	{0x3031, 0x02},
+	{0x3032, 0xD0},
+	{0x3033, 0x02},
+
+	{0x30EE, 0x01},
+	{0x3130, 0xE2},
+	{0x3131, 0x02},
+	{0x3132, 0xDE},
+	{0x3133, 0x02},
+	{0x3342, 0x0A},
+	{0x3343, 0x00},
+	{0x3344, 0x1B},
+	{0x3345, 0x00},
+	{0x33A6, 0x01},
+	{0x3528, 0x0E},
+	{0x3554, 0x00},
+	{0x3555, 0x01},
+	{0x3556, 0x01},
+	{0x3557, 0x01},
+	{0x3558, 0x01},
+	{0x3559, 0x00},
+	{0x355A, 0x00},
+	{0x35BA, 0x0E},
+	{0x366A, 0x1B},
+	{0x366B, 0x19},
+	{0x366C, 0x17},
+	{0x366D, 0x17},
+	{0x3A41, 0x04},
+
+	{IMX274_TABLE_END, 0x00}
+};
+
+/*
+ * imx274 first step register configuration for
+ * starting stream
+ */
+static const struct reg_8 imx274_start_1[] = {
+	{IMX274_STANDBY_REG, 0x12},
+	{IMX274_TABLE_END, 0x00}
+};
+
+/*
+ * imx274 second step register configuration for
+ * starting stream
+ */
+static const struct reg_8 imx274_start_2[] = {
+	{0x3120, 0xF0}, /* clock settings */
+	{0x3121, 0x00}, /* clock settings */
+	{0x3122, 0x02}, /* clock settings */
+	{0x3129, 0x9C}, /* clock settings */
+	{0x312A, 0x02}, /* clock settings */
+	{0x312D, 0x02}, /* clock settings */
+
+	{0x310B, 0x00},
+
+	/* PLSTMG */
+	{0x304C, 0x00}, /* PLSTMG01 */
+	{0x304D, 0x03},
+	{0x331C, 0x1A},
+	{0x331D, 0x00},
+	{0x3502, 0x02},
+	{0x3529, 0x0E},
+	{0x352A, 0x0E},
+	{0x352B, 0x0E},
+	{0x3538, 0x0E},
+	{0x3539, 0x0E},
+	{0x3553, 0x00},
+	{0x357D, 0x05},
+	{0x357F, 0x05},
+	{0x3581, 0x04},
+	{0x3583, 0x76},
+	{0x3587, 0x01},
+	{0x35BB, 0x0E},
+	{0x35BC, 0x0E},
+	{0x35BD, 0x0E},
+	{0x35BE, 0x0E},
+	{0x35BF, 0x0E},
+	{0x366E, 0x00},
+	{0x366F, 0x00},
+	{0x3670, 0x00},
+	{0x3671, 0x00},
+
+	/* PSMIPI */
+	{0x3304, 0x32}, /* PSMIPI1 */
+	{0x3305, 0x00},
+	{0x3306, 0x32},
+	{0x3307, 0x00},
+	{0x3590, 0x32},
+	{0x3591, 0x00},
+	{0x3686, 0x32},
+	{0x3687, 0x00},
+
+	{IMX274_TABLE_END, 0x00}
+};
+
+/*
+ * imx274 third step register configuration for
+ * starting stream
+ */
+static const struct reg_8 imx274_start_3[] = {
+	{IMX274_STANDBY_REG, 0x00},
+	{0x303E, 0x02}, /* SYS_MODE = 2 */
+	{IMX274_TABLE_END, 0x00}
+};
+
+/*
+ * imx274 forth step register configuration for
+ * starting stream
+ */
+static const struct reg_8 imx274_start_4[] = {
+	{0x30F4, 0x00},
+	{0x3018, 0xA2}, /* XHS VHS OUTUPT */
+	{IMX274_TABLE_END, 0x00}
+};
+
+/*
+ * imx274 register configuration for stoping stream
+ */
+static const struct reg_8 imx274_stop[] = {
+	{IMX274_STANDBY_REG, 0x01},
+	{IMX274_TABLE_END, 0x00}
+};
+
+/*
+ * imx274 disable test pattern register configuration
+ */
+static const struct reg_8 imx274_tp_disabled[] = {
+	{0x303C, 0x00},
+	{0x377F, 0x00},
+	{0x3781, 0x00},
+	{0x370B, 0x00},
+	{IMX274_TABLE_END, 0x00}
+};
+
+/*
+ * imx274 test pattern register configuration
+ * reg 0x303D defines the test pattern modes
+ */
+static const struct reg_8 imx274_tp_regs[] = {
+	{0x303C, 0x11},
+	{0x370E, 0x01},
+	{0x377F, 0x01},
+	{0x3781, 0x01},
+	{0x370B, 0x11},
+	{IMX274_TABLE_END, 0x00}
+};
+
+static const struct reg_8 *mode_table[] = {
+	[IMX274_MODE_3840X2160]		= imx274_mode1_3840x2160_raw10,
+	[IMX274_MODE_1920X1080]		= imx274_mode3_1920x1080_raw10,
+	[IMX274_MODE_1280X720]		= imx274_mode5_1280x720_raw10,
+
+	[IMX274_MODE_START_STREAM_1]	= imx274_start_1,
+	[IMX274_MODE_START_STREAM_2]	= imx274_start_2,
+	[IMX274_MODE_START_STREAM_3]	= imx274_start_3,
+	[IMX274_MODE_START_STREAM_4]	= imx274_start_4,
+	[IMX274_MODE_STOP_STREAM]	= imx274_stop,
+};
+
+/*
+ * imx274 format related structure
+ */
+static const struct imx274_frmfmt imx274_formats[] = {
+	{MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_COLORSPACE_SRGB, {3840, 2160},
+		IMX274_MODE_3840X2160},
+	{MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_COLORSPACE_SRGB, {1920, 1080},
+		IMX274_MODE_1920X1080},
+	{MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_COLORSPACE_SRGB, {1280, 720},
+		IMX274_MODE_1280X720},
+};
+
+/*
+ * minimal frame length for each mode
+ * refer to datasheet section "Frame Rate Adjustment (CSI-2)"
+ */
+static const int min_frame_len[] = {
+	4550, /* mode 1, 4K */
+	2310, /* mode 3, 1080p */
+	2310 /* mode 5, 720p */
+};
+
+/*
+ * minimal numbers of SHR register
+ * refer to datasheet table "Shutter Setting (CSI-2)"
+ */
+static const int min_SHR[] = {
+	12, /* mode 1, 4K */
+	8, /* mode 3, 1080p */
+	8 /* mode 5, 720p */
+};
+
+static const int max_frame_rate[] = {
+	60, /* mode 1 , 4K */
+	120, /* mode 3, 1080p */
+	120 /* mode 5, 720p */
+};
+
+/*
+ * Number of clocks per internal offset period
+ * a constant based on mode
+ * refer to section "Integration Time in Each Readout Drive Mode (CSI-2)"
+ * in the datasheet
+ * for the implemented 3 modes, it happens to be the same number
+ */
+static const int nocpiop[] = {
+	112, /* mode 1 , 4K */
+	112, /* mode 3, 1080p */
+	112 /* mode 5, 720p */
+};
+
+/*
+ * struct imx274_ctrls - imx274 ctrl structure
+ * @handler: V4L2 ctrl handler structure
+ * @exposure: Pointer to expsure ctrl structure
+ * @gain: Pointer to gain ctrl structure
+ * @vflip: Pointer to vflip ctrl structure
+ * @test_pattern: Pointer to test pattern ctrl structure
+ */
+struct imx274_ctrls {
+	struct v4l2_ctrl_handler handler;
+	struct v4l2_ctrl *exposure;
+	struct v4l2_ctrl *gain;
+	struct v4l2_ctrl *vflip;
+	struct v4l2_ctrl *test_pattern;
+};
+
+/*
+ * struct stim274 - imx274 device structure
+ * @sd: V4L2 subdevice structure
+ * @pd: Media pad structure
+ * @client: Pointer to I2C client
+ * @ctrls: imx274 control structure
+ * @format: V4L2 media bus frame format structure
+ * @frame_rate: V4L2 frame rate structure
+ * @regmap: Pointer to regmap structure
+ * @reset_gpio: Pointer to reset gpio
+ * @lock: Mutex structure
+ * @mode_index: Resolution mode index
+ */
+struct stimx274 {
+	struct v4l2_subdev sd;
+	struct media_pad pad;
+	struct i2c_client *client;
+	struct imx274_ctrls ctrls;
+	struct v4l2_mbus_framefmt format;
+	struct v4l2_fract frame_interval;
+	struct regmap *regmap;
+	struct gpio_desc *reset_gpio;
+	struct mutex lock; /* mutex lock for operations */
+	u32 mode_index;
+};
+
+/*
+ * Function declaration
+ */
+static int imx274_set_gain(struct stimx274 *priv, struct v4l2_ctrl *ctrl);
+static int imx274_set_exposure(struct stimx274 *priv, int val);
+static int imx274_set_vflip(struct stimx274 *priv, int val);
+static int imx274_set_test_pattern(struct stimx274 *priv, int val);
+static int imx274_set_frame_interval(struct stimx274 *priv,
+				     struct v4l2_fract frame_interval);
+
+static inline void msleep_range(unsigned int delay_base)
+{
+	usleep_range(delay_base * 1000, delay_base * 1000 + 500);
+}
+
+/*
+ * v4l2_ctrl and v4l2_subdev related operations
+ */
+static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
+{
+	return &container_of(ctrl->handler,
+			     struct stimx274, ctrls.handler)->sd;
+}
+
+static inline struct stimx274 *to_imx274(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct stimx274, sd);
+}
+
+/*
+ * imx274_regmap_util_write_table_8 - Function for writing register table
+ * @regmap: Pointer to device reg map structure
+ * @table: Table containing register values
+ * @wait_ms_addr: Flag for performing delay
+ * @end_addr: Flag for incating end of table
+ *
+ * This is used to write register table into sensor's reg map.
+ *
+ * Return: 0 on success, errors otherwise
+ */
+static int imx274_regmap_util_write_table_8(struct regmap *regmap,
+					    const struct reg_8 table[],
+					    u16 wait_ms_addr, u16 end_addr)
+{
+	int err;
+	const struct reg_8 *next;
+	u8 val;
+
+	int range_start = -1;
+	int range_count = 0;
+	u8 range_vals[16];
+	int max_range_vals = ARRAY_SIZE(range_vals);
+
+	for (next = table;; next++) {
+		if ((next->addr != range_start + range_count) ||
+		    (next->addr == end_addr) ||
+		    (next->addr == wait_ms_addr) ||
+		    (range_count == max_range_vals)) {
+			if (range_count == 1)
+				err = regmap_write(regmap,
+						   range_start, range_vals[0]);
+			else if (range_count > 1)
+				err = regmap_bulk_write(regmap, range_start,
+							&range_vals[0],
+							range_count);
+
+			if (err)
+				return err;
+
+			range_start = -1;
+			range_count = 0;
+
+			/* Handle special address values */
+			if (next->addr == end_addr)
+				break;
+
+			if (next->addr == wait_ms_addr) {
+				msleep_range(next->val);
+				continue;
+			}
+		}
+
+		val = next->val;
+
+		if (range_start == -1)
+			range_start = next->addr;
+
+		range_vals[range_count++] = val;
+	}
+	return 0;
+}
+
+static inline int imx274_read_reg(struct stimx274 *priv, u16 addr, u8 *val)
+{
+	int err;
+
+	err = regmap_read(priv->regmap, addr, (unsigned int *)val);
+	if (err)
+		dev_err(&priv->client->dev,
+			"%s : i2c read failed, addr = %x\n", __func__, addr);
+	else
+		dev_dbg(&priv->client->dev,
+			"%s : addr 0x%x, val=0x%x\n", __func__,
+			addr, *val);
+	return err;
+}
+
+static inline int imx274_write_reg(struct stimx274 *priv, u16 addr, u8 val)
+{
+	int err;
+
+	err = regmap_write(priv->regmap, addr, val);
+	if (err)
+		dev_err(&priv->client->dev,
+			"%s : i2c write failed, %x = %x\n", __func__,
+			addr, val);
+	else
+		dev_dbg(&priv->client->dev,
+			"%s : addr 0x%x, val=0x%x\n", __func__,
+			addr, val);
+	return err;
+}
+
+static int imx274_write_table(struct stimx274 *priv, const struct reg_8 table[])
+{
+	return imx274_regmap_util_write_table_8(priv->regmap,
+		table, IMX274_TABLE_WAIT_MS, IMX274_TABLE_END);
+}
+
+/*
+ * imx274_mode_regs - Function for set mode registers per mode index
+ * @priv: Pointer to device structure
+ * @mode: Mode index value
+ *
+ * This is used to start steam per mode index.
+ * mode = 0, start stream for sensor Mode 1: 4K/raw10
+ * mode = 1, start stream for sensor Mode 3: 1080p/raw10
+ * mode = 2, start stream for sensor Mode 5: 720p/raw10
+ *
+ * Return: 0 on success, errors otherwise
+ */
+static int imx274_mode_regs(struct stimx274 *priv, int mode)
+{
+	int err = 0;
+
+	err = imx274_write_table(priv, mode_table[IMX274_MODE_START_STREAM_1]);
+	if (err)
+		return err;
+
+	err = imx274_write_table(priv, mode_table[IMX274_MODE_START_STREAM_2]);
+	if (err)
+		return err;
+
+	err = imx274_write_table(priv, mode_table[mode]);
+
+	return err;
+}
+
+/*
+ * imx274_start_stream - Function for starting stream per mode index
+ * @priv: Pointer to device structure
+ *
+ * Return: 0 on success, errors otherwise
+ */
+static int imx274_start_stream(struct stimx274 *priv)
+{
+	int err = 0;
+
+	/*
+	 * Refer to "Standby Cancel Sequence when using CSI-2" in
+	 * imx274 datasheet, it should wait 10ms or more here.
+	 * give it 1 extra ms for margin
+	 */
+	msleep_range(11);
+	err = imx274_write_table(priv, mode_table[IMX274_MODE_START_STREAM_3]);
+	if (err)
+		return err;
+
+	/*
+	 * Refer to "Standby Cancel Sequence when using CSI-2" in
+	 * imx274 datasheet, it should wait 7ms or more here.
+	 * give it 1 extra ms for margin
+	 */
+	msleep_range(8);
+	err = imx274_write_table(priv, mode_table[IMX274_MODE_START_STREAM_4]);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+/*
+ * imx274_reset - Function called to reset the sensor
+ * @priv: Pointer to device structure
+ * @rst: Input value for determining the sensor's end state after reset
+ *
+ * Set the senor in reset and then
+ * if rst = 0, keep it in reset;
+ * if rst = 1, bring it out of reset.
+ *
+ */
+static void imx274_reset(struct stimx274 *priv, int rst)
+{
+	gpiod_set_value_cansleep(priv->reset_gpio, 0);
+	usleep_range(IMX274_RESET_DELAY1, IMX274_RESET_DELAY2);
+	gpiod_set_value_cansleep(priv->reset_gpio, !!rst);
+	usleep_range(IMX274_RESET_DELAY1, IMX274_RESET_DELAY2);
+}
+
+/**
+ * imx274_s_ctrl - This is used to set the imx274 V4L2 controls
+ * @ctrl: V4L2 control to be set
+ *
+ * This function is used to set the V4L2 controls for the imx274 sensor.
+ *
+ * Return: 0 on success, errors otherwise
+ */
+static int imx274_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
+	struct stimx274 *imx274 = to_imx274(sd);
+	int ret = -EINVAL;
+
+	dev_dbg(&imx274->client->dev,
+		"%s : s_ctrl: %s, value: %d\n", __func__,
+		ctrl->name, ctrl->val);
+
+	switch (ctrl->id) {
+	case V4L2_CID_EXPOSURE:
+		dev_dbg(&imx274->client->dev,
+			"%s : set V4L2_CID_EXPOSURE\n", __func__);
+		ret = imx274_set_exposure(imx274, ctrl->val);
+		break;
+
+	case V4L2_CID_GAIN:
+		dev_dbg(&imx274->client->dev,
+			"%s : set V4L2_CID_GAIN\n", __func__);
+		ret = imx274_set_gain(imx274, ctrl);
+		break;
+
+	case V4L2_CID_VFLIP:
+		dev_dbg(&imx274->client->dev,
+			"%s : set V4L2_CID_VFLIP\n", __func__);
+		ret = imx274_set_vflip(imx274, ctrl->val);
+		break;
+
+	case V4L2_CID_TEST_PATTERN:
+		dev_dbg(&imx274->client->dev,
+			"%s : set V4L2_CID_TEST_PATTERN\n", __func__);
+		ret = imx274_set_test_pattern(imx274, ctrl->val);
+		break;
+	}
+
+	return ret;
+}
+
+/**
+ * imx274_get_fmt - Get the pad format
+ * @sd: Pointer to V4L2 Sub device structure
+ * @cfg: Pointer to sub device pad information structure
+ * @fmt: Pointer to pad level media bus format
+ *
+ * This function is used to get the pad format information.
+ *
+ * Return: 0 on success
+ */
+static int imx274_get_fmt(struct v4l2_subdev *sd,
+			  struct v4l2_subdev_pad_config *cfg,
+			  struct v4l2_subdev_format *fmt)
+{
+	struct stimx274 *imx274 = to_imx274(sd);
+
+	mutex_lock(&imx274->lock);
+	fmt->format = imx274->format;
+	mutex_unlock(&imx274->lock);
+	return 0;
+}
+
+/**
+ * imx274_set_fmt - This is used to set the pad format
+ * @sd: Pointer to V4L2 Sub device structure
+ * @cfg: Pointer to sub device pad information structure
+ * @format: Pointer to pad level media bus format
+ *
+ * This function is used to set the pad format.
+ *
+ * Return: 0 on success
+ */
+static int imx274_set_fmt(struct v4l2_subdev *sd,
+			  struct v4l2_subdev_pad_config *cfg,
+			  struct v4l2_subdev_format *format)
+{
+	struct v4l2_mbus_framefmt *fmt = &format->format;
+	struct stimx274 *imx274 = to_imx274(sd);
+	struct i2c_client *client = imx274->client;
+	int index;
+
+	dev_dbg(&client->dev,
+		"%s: width = %d height = %d code = %d mbus_code = %d\n",
+		__func__, fmt->width, fmt->height, fmt->code,
+		imx274_formats[imx274->mode_index].mbus_code);
+
+	mutex_lock(&imx274->lock);
+
+	for (index = 0; index < ARRAY_SIZE(imx274_formats); index++) {
+		if (imx274_formats[index].size.width == fmt->width &&
+		    imx274_formats[index].size.height == fmt->height)
+			break;
+	}
+
+	if (index >= ARRAY_SIZE(imx274_formats)) {
+		/* default to first format */
+		index = 0;
+	}
+
+	imx274->mode_index = index;
+
+	if (fmt->width > IMX274_MAX_WIDTH)
+		fmt->width = IMX274_MAX_WIDTH;
+	if (fmt->height > IMX274_MAX_HEIGHT)
+		fmt->height = IMX274_MAX_HEIGHT;
+	fmt->width = fmt->width & (~IMX274_MASK_LSB_2_BITS);
+	fmt->height = fmt->height & (~IMX274_MASK_LSB_2_BITS);
+	fmt->field = V4L2_FIELD_NONE;
+
+	if (format->which == V4L2_SUBDEV_FORMAT_TRY)
+		cfg->try_fmt = *fmt;
+	else
+		imx274->format = *fmt;
+
+	mutex_unlock(&imx274->lock);
+	return 0;
+}
+
+/**
+ * imx274_g_frame_interval - Get the frame interval
+ * @sd: Pointer to V4L2 Sub device structure
+ * @fi: Pointer to V4l2 Sub device frame interval structure
+ *
+ * This function is used to get the frame interval.
+ *
+ * Return: 0 on success
+ */
+static int imx274_g_frame_interval(struct v4l2_subdev *sd,
+				   struct v4l2_subdev_frame_interval *fi)
+{
+	struct stimx274 *imx274 = to_imx274(sd);
+
+	fi->interval = imx274->frame_interval;
+	dev_dbg(&imx274->client->dev, "%s frame rate = %d / %d\n",
+		__func__, imx274->frame_interval.numerator,
+		imx274->frame_interval.denominator);
+
+	return 0;
+}
+
+/**
+ * imx274_s_frame_interval - Set the frame interval
+ * @sd: Pointer to V4L2 Sub device structure
+ * @fi: Pointer to V4l2 Sub device frame interval structure
+ *
+ * This function is used to set the frame intervavl.
+ *
+ * Return: 0 on success
+ */
+static int imx274_s_frame_interval(struct v4l2_subdev *sd,
+				   struct v4l2_subdev_frame_interval *fi)
+{
+	struct stimx274 *imx274 = to_imx274(sd);
+	struct v4l2_ctrl *ctrl = imx274->ctrls.exposure;
+	int min, max, def;
+	int ret;
+
+	mutex_lock(&imx274->lock);
+	ret = imx274_set_frame_interval(imx274, fi->interval);
+
+	if (!ret) {
+		/*
+		 * exposure time range is decided by frame interval
+		 * need to update it after frame interal changes
+		 */
+		min = IMX274_MIN_EXPOSURE_TIME;
+		max = fi->interval.numerator * 1000000
+			/ fi->interval.denominator;
+		def = max;
+		if (__v4l2_ctrl_modify_range(ctrl, min, max, 1, def)) {
+			dev_err(&imx274->client->dev,
+				"Exposure ctrl range update failed\n");
+			goto unlock;
+		}
+
+		/* update exposure time accordingly */
+		imx274_set_exposure(imx274, imx274->ctrls.exposure->val);
+
+		dev_dbg(&imx274->client->dev, "set frame interval to %uus\n",
+			fi->interval.numerator * 1000000
+			/ fi->interval.denominator);
+	}
+
+unlock:
+	mutex_unlock(&imx274->lock);
+
+	return ret;
+}
+
+/**
+ * imx274_load_default - load default control values
+ * @priv: Pointer to device structure
+ *
+ * Return: 0 on success, errors otherwise
+ */
+static int imx274_load_default(struct stimx274 *priv)
+{
+	int ret;
+
+	/* load default control values */
+	priv->frame_interval.numerator = 1;
+	priv->frame_interval.denominator = IMX274_DEF_FRAME_RATE;
+	priv->ctrls.exposure->val = 1000000 / IMX274_DEF_FRAME_RATE;
+	priv->ctrls.gain->val = IMX274_DEF_GAIN;
+	priv->ctrls.vflip->val = 0;
+	priv->ctrls.test_pattern->val = TEST_PATTERN_DISABLED;
+
+	/* update frame rate */
+	ret = imx274_set_frame_interval(priv,
+					priv->frame_interval);
+	if (ret)
+		return ret;
+
+	/* update exposure time */
+	ret = v4l2_ctrl_s_ctrl(priv->ctrls.exposure, priv->ctrls.exposure->val);
+	if (ret)
+		return ret;
+
+	/* update gain */
+	ret = v4l2_ctrl_s_ctrl(priv->ctrls.gain, priv->ctrls.gain->val);
+	if (ret)
+		return ret;
+
+	/* update vflip */
+	ret = v4l2_ctrl_s_ctrl(priv->ctrls.vflip, priv->ctrls.vflip->val);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+/**
+ * imx274_s_stream - It is used to start/stop the streaming.
+ * @sd: V4L2 Sub device
+ * @on: Flag (True / False)
+ *
+ * This function controls the start or stop of streaming for the
+ * imx274 sensor.
+ *
+ * Return: 0 on success, errors otherwise
+ */
+static int imx274_s_stream(struct v4l2_subdev *sd, int on)
+{
+	struct stimx274 *imx274 = to_imx274(sd);
+	int ret = 0;
+
+	dev_dbg(&imx274->client->dev, "%s : %s, mode index = %d\n", __func__,
+		on ? "Stream Start" : "Stream Stop", imx274->mode_index);
+
+	mutex_lock(&imx274->lock);
+
+	if (on) {
+		/* load mode registers */
+		imx274_mode_regs(imx274, imx274->mode_index);
+		if (ret)
+			goto fail;
+
+		/*
+		 * update frame rate & expsoure. if the last mode is different,
+		 * HMAX could be changed. As the result, frame rate & exposure
+		 * are changed.
+		 * gain is not affected.
+		 */
+		ret = imx274_set_frame_interval(imx274,
+						imx274->frame_interval);
+		if (ret)
+			goto fail;
+
+		/* update exposure time */
+		ret = __v4l2_ctrl_s_ctrl(imx274->ctrls.exposure,
+					 imx274->ctrls.exposure->val);
+		if (ret)
+			goto fail;
+
+		/* start stream */
+		ret = imx274_start_stream(imx274);
+		if (ret)
+			goto fail;
+	} else {
+		/* stop stream */
+		ret = imx274_write_table(imx274,
+					 mode_table[IMX274_MODE_STOP_STREAM]);
+		if (ret)
+			goto fail;
+	}
+
+	mutex_unlock(&imx274->lock);
+	dev_dbg(&imx274->client->dev,
+		"%s : Done: mode = %d\n", __func__, imx274->mode_index);
+	return 0;
+
+fail:
+	mutex_unlock(&imx274->lock);
+	dev_err(&imx274->client->dev, "s_stream failed\n");
+	return ret;
+}
+
+/*
+ * imx274_get_frame_length - Function for obtaining current frame length
+ * @priv: Pointer to device structure
+ * @val: Pointer to obainted value
+ *
+ * frame_length = vmax x (svr + 1), in unit of hmax.
+ *
+ * Return: 0 on success
+ */
+static int imx274_get_frame_length(struct stimx274 *priv, u32 *val)
+{
+	int err;
+	u16 svr;
+	u32 vmax;
+	u8 reg_val[3];
+
+	/* svr */
+	err = imx274_read_reg(priv, IMX274_SVR_REG_LSB, &reg_val[0]);
+	if (err)
+		goto fail;
+
+	err = imx274_read_reg(priv, IMX274_SVR_REG_MSB, &reg_val[1]);
+	if (err)
+		goto fail;
+
+	svr = (reg_val[1] << IMX274_SHIFT_8_BITS) + reg_val[0];
+
+	/* vmax */
+	err = imx274_read_reg(priv, IMX274_FRAME_LENGTH_ADDR_3, &reg_val[0]);
+	if (err)
+		goto fail;
+
+	err = imx274_read_reg(priv, IMX274_FRAME_LENGTH_ADDR_2, &reg_val[1]);
+	if (err)
+		goto fail;
+
+	err = imx274_read_reg(priv, IMX274_FRAME_LENGTH_ADDR_1, &reg_val[2]);
+	if (err)
+		goto fail;
+
+	vmax = ((reg_val[2] & IMX274_MASK_LSB_3_BITS) << IMX274_SHIFT_16_BITS)
+		+ (reg_val[1] << IMX274_SHIFT_8_BITS) + reg_val[0];
+
+	*val = vmax * (svr + 1);
+
+	return 0;
+
+fail:
+	dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
+	return err;
+}
+
+static int imx274_clamp_coarse_time(struct stimx274 *priv, u32 *val,
+				    u32 *frame_length)
+{
+	int err;
+
+	err = imx274_get_frame_length(priv, frame_length);
+	if (err)
+		return err;
+
+	if (*frame_length < min_frame_len[priv->mode_index])
+		*frame_length = min_frame_len[priv->mode_index];
+
+	*val = *frame_length - *val; /* convert to raw shr */
+	if (*val > *frame_length - IMX274_SHR_LIMIT_CONST)
+		*val = *frame_length - IMX274_SHR_LIMIT_CONST;
+	else if (*val < min_SHR[priv->mode_index])
+		*val = min_SHR[priv->mode_index];
+
+	return 0;
+}
+
+/*
+ * imx274_set_digital gain - Function called when setting digital gain
+ * @priv: Pointer to device structure
+ * @dgain: Value of digital gain.
+ *
+ * Digital gain has only 4 steps: 1x, 2x, 4x, and 8x
+ *
+ * Return: 0 on success
+ */
+static int imx274_set_digital_gain(struct stimx274 *priv, u32 dgain)
+{
+	u8 reg_val;
+
+	reg_val = ffs(dgain);
+
+	if (reg_val)
+		reg_val--;
+
+	reg_val = clamp(reg_val, (u8)0, (u8)3);
+
+	return imx274_write_reg(priv, IMX274_DIGITAL_GAIN_REG,
+				reg_val & IMX274_MASK_LSB_4_BITS);
+}
+
+static inline void imx274_calculate_gain_regs(struct reg_8 regs[2], u16 gain)
+{
+	regs->addr = IMX274_ANALOG_GAIN_ADDR_MSB;
+	regs->val = (gain >> IMX274_SHIFT_8_BITS) & IMX274_MASK_LSB_3_BITS;
+
+	(regs + 1)->addr = IMX274_ANALOG_GAIN_ADDR_LSB;
+	(regs + 1)->val = (gain) & IMX274_MASK_LSB_8_BITS;
+}
+
+/*
+ * imx274_set_gain - Function called when setting gain
+ * @priv: Pointer to device structure
+ * @val: Value of gain. the real value = val << IMX274_GAIN_SHIFT;
+ * @ctrl: v4l2 control pointer
+ *
+ * Set the gain based on input value.
+ * The caller should hold the mutex lock imx274->lock if necessary
+ *
+ * Return: 0 on success
+ */
+static int imx274_set_gain(struct stimx274 *priv, struct v4l2_ctrl *ctrl)
+{
+	struct reg_8 reg_list[2];
+	int err;
+	u32 gain, analog_gain, digital_gain, gain_reg;
+	int i;
+
+	gain = (u32)(ctrl->val);
+
+	dev_dbg(&priv->client->dev,
+		"%s : input gain = %d.%d\n", __func__,
+		gain >> IMX274_GAIN_SHIFT,
+		((gain & IMX274_GAIN_SHIFT_MASK) * 100) >> IMX274_GAIN_SHIFT);
+
+	if (gain > IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN)
+		gain = IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN;
+	else if (gain < IMX274_MIN_GAIN)
+		gain = IMX274_MIN_GAIN;
+
+	if (gain <= IMX274_MAX_ANALOG_GAIN)
+		digital_gain = 1;
+	else if (gain <= IMX274_MAX_ANALOG_GAIN * 2)
+		digital_gain = 2;
+	else if (gain <= IMX274_MAX_ANALOG_GAIN * 4)
+		digital_gain = 4;
+	else
+		digital_gain = IMX274_MAX_DIGITAL_GAIN;
+
+	analog_gain = gain / digital_gain;
+
+	dev_dbg(&priv->client->dev,
+		"%s : digital gain = %d, analog gain = %d.%d\n",
+		__func__, digital_gain, analog_gain >> IMX274_GAIN_SHIFT,
+		((analog_gain & IMX274_GAIN_SHIFT_MASK) * 100)
+		>> IMX274_GAIN_SHIFT);
+
+	err = imx274_set_digital_gain(priv, digital_gain);
+	if (err)
+		goto fail;
+
+	/* convert to register value, refer to imx274 datasheet */
+	gain_reg = (u32)IMX274_GAIN_CONST -
+		(IMX274_GAIN_CONST << IMX274_GAIN_SHIFT) / analog_gain;
+	if (gain_reg > IMX274_GAIN_REG_MAX)
+		gain_reg = IMX274_GAIN_REG_MAX;
+
+	imx274_calculate_gain_regs(reg_list, (u16)gain_reg);
+
+	for (i = 0; i < ARRAY_SIZE(reg_list); i++) {
+		err = imx274_write_reg(priv, reg_list[i].addr,
+				       reg_list[i].val);
+		if (err)
+			goto fail;
+	}
+
+	if (IMX274_GAIN_CONST - gain_reg == 0) {
+		err = -EINVAL;
+		goto fail;
+	}
+
+	/* convert register value back to gain value */
+	ctrl->val = (IMX274_GAIN_CONST << IMX274_GAIN_SHIFT)
+			/ (IMX274_GAIN_CONST - gain_reg) * digital_gain;
+
+	dev_dbg(&priv->client->dev,
+		"%s : GAIN control success, gain_reg = %d, new gain = %d\n",
+		__func__, gain_reg, ctrl->val);
+
+	return 0;
+
+fail:
+	dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
+	return err;
+}
+
+static inline void imx274_calculate_coarse_time_regs(struct reg_8 regs[2],
+						     u32 coarse_time)
+{
+	regs->addr = IMX274_COARSE_TIME_ADDR_MSB;
+	regs->val = (coarse_time >> IMX274_SHIFT_8_BITS)
+			& IMX274_MASK_LSB_8_BITS;
+	(regs + 1)->addr = IMX274_COARSE_TIME_ADDR_LSB;
+	(regs + 1)->val = (coarse_time) & IMX274_MASK_LSB_8_BITS;
+}
+
+/*
+ * imx274_set_coarse_time - Function called when setting SHR value
+ * @priv: Pointer to device structure
+ * @val: Value for exposure time in number of line_length, or [HMAX]
+ *
+ * Set SHR value based on input value.
+ *
+ * Return: 0 on success
+ */
+static int imx274_set_coarse_time(struct stimx274 *priv, u32 *val)
+{
+	struct reg_8 reg_list[2];
+	int err;
+	u32 coarse_time, frame_length;
+	int i;
+
+	coarse_time = *val;
+
+	/* convert exposure_time to appropriate SHR value */
+	err = imx274_clamp_coarse_time(priv, &coarse_time, &frame_length);
+	if (err)
+		goto fail;
+
+	/* prepare SHR registers */
+	imx274_calculate_coarse_time_regs(reg_list, coarse_time);
+
+	/* write to SHR registers */
+	for (i = 0; i < ARRAY_SIZE(reg_list); i++) {
+		err = imx274_write_reg(priv, reg_list[i].addr,
+				       reg_list[i].val);
+		if (err)
+			goto fail;
+	}
+
+	*val = frame_length - coarse_time;
+	return 0;
+
+fail:
+	dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
+	return err;
+}
+
+/*
+ * imx274_set_exposure - Function called when setting exposure time
+ * @priv: Pointer to device structure
+ * @val: Variable for exposure time, in the unit of micro-second
+ *
+ * Set exposure time based on input value.
+ * The caller should hold the mutex lock imx274->lock if necessary
+ *
+ * Return: 0 on success
+ */
+static int imx274_set_exposure(struct stimx274 *priv, int val)
+{
+	int err;
+	u16 hmax;
+	u8 reg_val[2];
+	u32 coarse_time; /* exposure time in unit of line (HMAX)*/
+
+	dev_dbg(&priv->client->dev,
+		"%s : EXPOSURE control input = %d\n", __func__, val);
+
+	/* step 1: convert input exposure_time (val) into number of 1[HMAX] */
+
+	/* obtain HMAX value */
+	err = imx274_read_reg(priv, IMX274_HMAX_REG_LSB, &reg_val[0]);
+	if (err)
+		goto fail;
+	err = imx274_read_reg(priv, IMX274_HMAX_REG_MSB, &reg_val[1]);
+	if (err)
+		goto fail;
+	hmax = (reg_val[1] << IMX274_SHIFT_8_BITS) + reg_val[0];
+	if (hmax == 0) {
+		err = -EINVAL;
+		goto fail;
+	}
+
+	coarse_time = (IMX274_PIXCLK_CONST1 / IMX274_PIXCLK_CONST2 * val
+			- nocpiop[priv->mode_index]) / hmax;
+
+	/* step 2: convert exposure_time into SHR value */
+
+	/* set SHR */
+	err = imx274_set_coarse_time(priv, &coarse_time);
+	if (err)
+		goto fail;
+
+	priv->ctrls.exposure->val =
+			(coarse_time * hmax + nocpiop[priv->mode_index])
+			/ (IMX274_PIXCLK_CONST1 / IMX274_PIXCLK_CONST2);
+
+	dev_dbg(&priv->client->dev,
+		"%s : EXPOSURE control success\n", __func__);
+	return 0;
+
+fail:
+	dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
+
+	return err;
+}
+
+/*
+ * imx274_set_vflip - Function called when setting vertical flip
+ * @priv: Pointer to device structure
+ * @val: Value for vflip setting
+ *
+ * Set vertical flip based on input value.
+ * val = 0: normal, no vertical flip
+ * val = 1: vertical flip enabled
+ * The caller should hold the mutex lock imx274->lock if necessary
+ *
+ * Return: 0 on success
+ */
+static int imx274_set_vflip(struct stimx274 *priv, int val)
+{
+	int err;
+
+	err = imx274_write_reg(priv, IMX274_VFLIP_REG, val);
+	if (err) {
+		dev_err(&priv->client->dev, "VFILP control error\n");
+		return err;
+	}
+
+	dev_dbg(&priv->client->dev,
+		"%s : VFLIP control success\n", __func__);
+
+	return 0;
+}
+
+/*
+ * imx274_set_test_pattern - Function called when setting test pattern
+ * @priv: Pointer to device structure
+ * @val: Variable for test pattern
+ *
+ * Set to different test patterns based on input value.
+ *
+ * Return: 0 on success
+ */
+static int imx274_set_test_pattern(struct stimx274 *priv, int val)
+{
+	int err = 0;
+
+	if (val == TEST_PATTERN_DISABLED) {
+		err = imx274_write_table(priv, imx274_tp_disabled);
+	} else if (val <= TEST_PATTERN_V_COLOR_BARS) {
+		err = imx274_write_reg(priv, IMX274_TEST_PATTERN_REG, val - 1);
+		if (!err)
+			err = imx274_write_table(priv, imx274_tp_regs);
+	} else {
+		err = -EINVAL;
+	}
+
+	if (!err)
+		dev_dbg(&priv->client->dev,
+			"%s : TEST PATTERN control success\n", __func__);
+	else
+		dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
+
+	return err;
+}
+
+static inline void imx274_calculate_frame_length_regs(struct reg_8 regs[3],
+						      u32 frame_length)
+{
+	regs->addr = IMX274_FRAME_LENGTH_ADDR_1;
+	regs->val = (frame_length >> IMX274_SHIFT_16_BITS)
+			& IMX274_MASK_LSB_4_BITS;
+	(regs + 1)->addr = IMX274_FRAME_LENGTH_ADDR_2;
+	(regs + 1)->val = (frame_length >> IMX274_SHIFT_8_BITS)
+			& IMX274_MASK_LSB_8_BITS;
+	(regs + 2)->addr = IMX274_FRAME_LENGTH_ADDR_3;
+	(regs + 2)->val = (frame_length) & IMX274_MASK_LSB_8_BITS;
+}
+
+/*
+ * imx274_set_frame_length - Function called when setting frame length
+ * @priv: Pointer to device structure
+ * @val: Variable for frame length (= VMAX, i.e. vertical drive period length)
+ *
+ * Set frame length based on input value.
+ *
+ * Return: 0 on success
+ */
+static int imx274_set_frame_length(struct stimx274 *priv, u32 val)
+{
+	struct reg_8 reg_list[3];
+	int err;
+	u32 frame_length;
+	int i;
+
+	dev_dbg(&priv->client->dev, "%s : input length = %d\n",
+		__func__, val);
+
+	frame_length = (u32)val;
+
+	imx274_calculate_frame_length_regs(reg_list, frame_length);
+	for (i = 0; i < ARRAY_SIZE(reg_list); i++) {
+		err = imx274_write_reg(priv, reg_list[i].addr,
+				       reg_list[i].val);
+		if (err)
+			goto fail;
+	}
+
+	return 0;
+
+fail:
+	dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
+	return err;
+}
+
+/*
+ * imx274_set_frame_interval - Function called when setting frame interval
+ * @priv: Pointer to device structure
+ * @frame_interval: Variable for frame interval
+ *
+ * Change frame interval by updating VMAX value
+ * The caller should hold the mutex lock imx274->lock if necessary
+ *
+ * Return: 0 on success
+ */
+static int imx274_set_frame_interval(struct stimx274 *priv,
+				     struct v4l2_fract frame_interval)
+{
+	int err;
+	u32 frame_length, req_frame_rate;
+	u16 svr;
+	u16 hmax;
+	u8 reg_val[2];
+
+	dev_dbg(&priv->client->dev, "%s: input frame interval = %d / %d",
+		__func__, frame_interval.numerator,
+		frame_interval.denominator);
+
+	if (frame_interval.numerator == 0) {
+		err = -EINVAL;
+		goto fail;
+	}
+
+	req_frame_rate = (u32)(frame_interval.denominator
+				/ frame_interval.numerator);
+
+	/* boundary check */
+	if (req_frame_rate > max_frame_rate[priv->mode_index]) {
+		frame_interval.numerator = 1;
+		frame_interval.denominator =
+					max_frame_rate[priv->mode_index];
+	} else if (req_frame_rate < IMX274_MIN_FRAME_RATE) {
+		frame_interval.numerator = 1;
+		frame_interval.denominator = IMX274_MIN_FRAME_RATE;
+	}
+
+	/*
+	 * VMAX = 1/frame_rate x 72M / (SVR+1) / HMAX
+	 * frame_length (i.e. VMAX) = (frame_interval) x 72M /(SVR+1) / HMAX
+	 */
+
+	/* SVR */
+	err = imx274_read_reg(priv, IMX274_SVR_REG_LSB, &reg_val[0]);
+	if (err)
+		goto fail;
+	err = imx274_read_reg(priv, IMX274_SVR_REG_MSB, &reg_val[1]);
+	if (err)
+		goto fail;
+	svr = (reg_val[1] << IMX274_SHIFT_8_BITS) + reg_val[0];
+	dev_dbg(&priv->client->dev,
+		"%s : register SVR = %d\n", __func__, svr);
+
+	/* HMAX */
+	err = imx274_read_reg(priv, IMX274_HMAX_REG_LSB, &reg_val[0]);
+	if (err)
+		goto fail;
+	err = imx274_read_reg(priv, IMX274_HMAX_REG_MSB, &reg_val[1]);
+	if (err)
+		goto fail;
+	hmax = (reg_val[1] << IMX274_SHIFT_8_BITS) + reg_val[0];
+	dev_dbg(&priv->client->dev,
+		"%s : register HMAX = %d\n", __func__, hmax);
+
+	if (hmax == 0 || frame_interval.denominator == 0) {
+		err = -EINVAL;
+		goto fail;
+	}
+
+	frame_length = IMX274_PIXCLK_CONST1 / (svr + 1) / hmax
+					* frame_interval.numerator
+					/ frame_interval.denominator;
+
+	err = imx274_set_frame_length(priv, frame_length);
+	if (err)
+		goto fail;
+
+	priv->frame_interval = frame_interval;
+	return 0;
+
+fail:
+	dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
+	return err;
+}
+
+static const struct v4l2_subdev_pad_ops imx274_pad_ops = {
+	.get_fmt = imx274_get_fmt,
+	.set_fmt = imx274_set_fmt,
+};
+
+static const struct v4l2_subdev_video_ops imx274_video_ops = {
+	.g_frame_interval = imx274_g_frame_interval,
+	.s_frame_interval = imx274_s_frame_interval,
+	.s_stream = imx274_s_stream,
+};
+
+static const struct v4l2_subdev_ops imx274_subdev_ops = {
+	.pad = &imx274_pad_ops,
+	.video = &imx274_video_ops,
+};
+
+static const struct v4l2_ctrl_ops imx274_ctrl_ops = {
+	.s_ctrl	= imx274_s_ctrl,
+};
+
+static const struct of_device_id imx274_of_id_table[] = {
+	{ .compatible = "sony,imx274" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, imx274_of_id_table);
+
+static const struct i2c_device_id imx274_id[] = {
+	{ "IMX274", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, imx274_id);
+
+static int imx274_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	struct v4l2_subdev *sd;
+	struct stimx274 *imx274;
+	int ret;
+
+	/* initialize imx274 */
+	imx274 = devm_kzalloc(&client->dev, sizeof(*imx274), GFP_KERNEL);
+	if (!imx274)
+		return -ENOMEM;
+
+	mutex_init(&imx274->lock);
+
+	/* initialize regmap */
+	imx274->regmap = devm_regmap_init_i2c(client, &imx274_regmap_config);
+	if (IS_ERR(imx274->regmap)) {
+		dev_err(&client->dev,
+			"regmap init failed: %ld\n", PTR_ERR(imx274->regmap));
+		ret = -ENODEV;
+		goto err_regmap;
+	}
+
+	/* initialize subdevice */
+	imx274->client = client;
+	sd = &imx274->sd;
+	v4l2_i2c_subdev_init(sd, client, &imx274_subdev_ops);
+	strlcpy(sd->name, DRIVER_NAME, sizeof(sd->name));
+	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
+
+	/* initialize subdev media pad */
+	imx274->pad.flags = MEDIA_PAD_FL_SOURCE;
+	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
+	ret = media_entity_pads_init(&sd->entity, 1, &imx274->pad);
+	if (ret < 0) {
+		dev_err(&client->dev,
+			"%s : media entity init Failed %d\n", __func__, ret);
+		goto err_regmap;
+	}
+
+	/* initialize sensor reset gpio */
+	imx274->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
+						     GPIOD_OUT_HIGH);
+	if (IS_ERR(imx274->reset_gpio)) {
+		if (PTR_ERR(imx274->reset_gpio) != -EPROBE_DEFER)
+			dev_err(&client->dev, "Reset GPIO not setup in DT");
+		ret = PTR_ERR(imx274->reset_gpio);
+		goto err_me;
+	}
+
+	/* pull sensor out of reset */
+	imx274_reset(imx274, 1);
+
+	/* initialize controls */
+	ret = v4l2_ctrl_handler_init(&imx274->ctrls.handler, 2);
+	if (ret < 0) {
+		dev_err(&client->dev,
+			"%s : ctrl handler init Failed\n", __func__);
+		goto err_me;
+	}
+
+	imx274->ctrls.handler.lock = &imx274->lock;
+
+	/* add new controls */
+	imx274->ctrls.test_pattern = v4l2_ctrl_new_std_menu_items(
+		&imx274->ctrls.handler, &imx274_ctrl_ops,
+		V4L2_CID_TEST_PATTERN,
+		ARRAY_SIZE(tp_qmenu) - 1, 0, 0, tp_qmenu);
+
+	imx274->ctrls.gain = v4l2_ctrl_new_std(
+		&imx274->ctrls.handler,
+		&imx274_ctrl_ops,
+		V4L2_CID_GAIN, IMX274_MIN_GAIN,
+		IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN, 1,
+		IMX274_DEF_GAIN);
+
+	imx274->ctrls.exposure = v4l2_ctrl_new_std(
+		&imx274->ctrls.handler,
+		&imx274_ctrl_ops,
+		V4L2_CID_EXPOSURE, IMX274_MIN_EXPOSURE_TIME,
+		1000000 / IMX274_DEF_FRAME_RATE, 1,
+		IMX274_MIN_EXPOSURE_TIME);
+
+	imx274->ctrls.vflip = v4l2_ctrl_new_std(
+		&imx274->ctrls.handler,
+		&imx274_ctrl_ops,
+		V4L2_CID_VFLIP, 0, 1, 1, 0);
+
+	imx274->sd.ctrl_handler = &imx274->ctrls.handler;
+	if (imx274->ctrls.handler.error) {
+		ret = imx274->ctrls.handler.error;
+		goto err_ctrls;
+	}
+
+	/* setup default controls */
+	ret = v4l2_ctrl_handler_setup(&imx274->ctrls.handler);
+	if (ret) {
+		dev_err(&client->dev,
+			"Error %d setup default controls\n", ret);
+		goto err_ctrls;
+	}
+
+	/* initialize format */
+	imx274->mode_index = IMX274_MODE_3840X2160;
+	imx274->format.width = imx274_formats[0].size.width;
+	imx274->format.height = imx274_formats[0].size.height;
+	imx274->format.field = V4L2_FIELD_NONE;
+	imx274->format.code = MEDIA_BUS_FMT_SRGGB10_1X10;
+	imx274->format.colorspace = V4L2_COLORSPACE_SRGB;
+	imx274->frame_interval.numerator = 1;
+	imx274->frame_interval.denominator = IMX274_DEF_FRAME_RATE;
+
+	/* load default control values */
+	ret = imx274_load_default(imx274);
+	if (ret) {
+		dev_err(&client->dev,
+			"%s : imx274_load_default failed %d\n",
+			__func__, ret);
+		goto err_ctrls;
+	}
+
+	/* register subdevice */
+	ret = v4l2_async_register_subdev(sd);
+	if (ret < 0) {
+		dev_err(&client->dev,
+			"%s : v4l2_async_register_subdev failed %d\n",
+			__func__, ret);
+		goto err_ctrls;
+	}
+
+	dev_info(&client->dev, "imx274 : imx274 probe success !\n");
+	return 0;
+
+err_ctrls:
+	v4l2_async_unregister_subdev(sd);
+	v4l2_ctrl_handler_free(sd->ctrl_handler);
+err_me:
+	media_entity_cleanup(&sd->entity);
+err_regmap:
+	mutex_destroy(&imx274->lock);
+	return ret;
+}
+
+static int imx274_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct stimx274 *imx274 = to_imx274(sd);
+
+	/* stop stream */
+	imx274_write_table(imx274, mode_table[IMX274_MODE_STOP_STREAM]);
+
+	v4l2_async_unregister_subdev(sd);
+	v4l2_ctrl_handler_free(sd->ctrl_handler);
+	media_entity_cleanup(&sd->entity);
+	mutex_destroy(&imx274->lock);
+	return 0;
+}
+
+static struct i2c_driver imx274_i2c_driver = {
+	.driver = {
+		.name	= DRIVER_NAME,
+		.of_match_table	= imx274_of_id_table,
+	},
+	.probe		= imx274_probe,
+	.remove		= imx274_remove,
+	.id_table	= imx274_id,
+};
+
+module_i2c_driver(imx274_i2c_driver);
+
+MODULE_AUTHOR("Leon Luo <leonl@leopardimaging.com>");
+MODULE_DESCRIPTION("IMX274 CMOS Image Sensor driver");
+MODULE_LICENSE("GPL v2");
-- 
cgit v1.2.3


From d94a26f05b017d93513d176959c49996768f446f Mon Sep 17 00:00:00 2001
From: Wenyou Yang <wenyou.yang@microchip.com>
Date: Mon, 16 Oct 2017 05:14:25 +0200
Subject: media: ov7670: Add entity pads initialization

Add the media entity pads initialization.

Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov7670.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov7670.c b/drivers/media/i2c/ov7670.c
index e88549f0e704..553945d4ca28 100644
--- a/drivers/media/i2c/ov7670.c
+++ b/drivers/media/i2c/ov7670.c
@@ -213,6 +213,9 @@ struct ov7670_devtype {
 struct ov7670_format_struct;  /* coming later */
 struct ov7670_info {
 	struct v4l2_subdev sd;
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	struct media_pad pad;
+#endif
 	struct v4l2_ctrl_handler hdl;
 	struct {
 		/* gain cluster */
@@ -1688,14 +1691,27 @@ static int ov7670_probe(struct i2c_client *client,
 	v4l2_ctrl_auto_cluster(2, &info->auto_exposure,
 			       V4L2_EXPOSURE_MANUAL, false);
 	v4l2_ctrl_cluster(2, &info->saturation);
+
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	info->pad.flags = MEDIA_PAD_FL_SOURCE;
+	info->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+	ret = media_entity_pads_init(&info->sd.entity, 1, &info->pad);
+	if (ret < 0)
+		goto hdl_free;
+#endif
+
 	v4l2_ctrl_handler_setup(&info->hdl);
 
 	ret = v4l2_async_register_subdev(&info->sd);
 	if (ret < 0)
-		goto hdl_free;
+		goto entity_cleanup;
 
 	return 0;
 
+entity_cleanup:
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	media_entity_cleanup(&info->sd.entity);
+#endif
 hdl_free:
 	v4l2_ctrl_handler_free(&info->hdl);
 clk_disable:
@@ -1712,6 +1728,9 @@ static int ov7670_remove(struct i2c_client *client)
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&info->hdl);
 	clk_disable_unprepare(info->clk);
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	media_entity_cleanup(&info->sd.entity);
+#endif
 	return 0;
 }
 
-- 
cgit v1.2.3


From c0662dd4e7a407a5ac79cc6ca4d1116bf03d3731 Mon Sep 17 00:00:00 2001
From: Wenyou Yang <wenyou.yang@microchip.com>
Date: Mon, 16 Oct 2017 05:14:26 +0200
Subject: media: ov7670: Add the get_fmt callback

Add the get_fmt callback, also enable V4L2_SUBDEV_FL_HAS_DEVNODE flag
to make this subdev has device node.

Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov7670.c | 77 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 76 insertions(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov7670.c b/drivers/media/i2c/ov7670.c
index 553945d4ca28..73ceec63a8ca 100644
--- a/drivers/media/i2c/ov7670.c
+++ b/drivers/media/i2c/ov7670.c
@@ -232,6 +232,7 @@ struct ov7670_info {
 		struct v4l2_ctrl *saturation;
 		struct v4l2_ctrl *hue;
 	};
+	struct v4l2_mbus_framefmt format;
 	struct ov7670_format_struct *fmt;  /* Current format */
 	struct clk *clk;
 	struct gpio_desc *resetb_gpio;
@@ -975,6 +976,9 @@ static int ov7670_try_fmt_internal(struct v4l2_subdev *sd,
 	fmt->width = wsize->width;
 	fmt->height = wsize->height;
 	fmt->colorspace = ov7670_formats[index].colorspace;
+
+	info->format = *fmt;
+
 	return 0;
 }
 
@@ -988,6 +992,9 @@ static int ov7670_set_fmt(struct v4l2_subdev *sd,
 	struct ov7670_format_struct *ovfmt;
 	struct ov7670_win_size *wsize;
 	struct ov7670_info *info = to_state(sd);
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+	struct v4l2_mbus_framefmt *mbus_fmt;
+#endif
 	unsigned char com7;
 	int ret;
 
@@ -998,8 +1005,13 @@ static int ov7670_set_fmt(struct v4l2_subdev *sd,
 		ret = ov7670_try_fmt_internal(sd, &format->format, NULL, NULL);
 		if (ret)
 			return ret;
-		cfg->try_fmt = format->format;
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+		mbus_fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
+		*mbus_fmt = format->format;
 		return 0;
+#else
+		return -ENOTTY;
+#endif
 	}
 
 	ret = ov7670_try_fmt_internal(sd, &format->format, &ovfmt, &wsize);
@@ -1041,6 +1053,30 @@ static int ov7670_set_fmt(struct v4l2_subdev *sd,
 	return 0;
 }
 
+static int ov7670_get_fmt(struct v4l2_subdev *sd,
+			  struct v4l2_subdev_pad_config *cfg,
+			  struct v4l2_subdev_format *format)
+{
+	struct ov7670_info *info = to_state(sd);
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+	struct v4l2_mbus_framefmt *mbus_fmt;
+#endif
+
+	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+		mbus_fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
+		format->format = *mbus_fmt;
+		return 0;
+#else
+		return -ENOTTY;
+#endif
+	} else {
+		format->format = info->format;
+	}
+
+	return 0;
+}
+
 /*
  * Implement G/S_PARM.  There is a "high quality" mode we could try
  * to do someday; for now, we just do the frame rate tweak.
@@ -1508,6 +1544,30 @@ static int ov7670_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_regis
 }
 #endif
 
+static void ov7670_get_default_format(struct v4l2_subdev *sd,
+				      struct v4l2_mbus_framefmt *format)
+{
+	struct ov7670_info *info = to_state(sd);
+
+	format->width = info->devtype->win_sizes[0].width;
+	format->height = info->devtype->win_sizes[0].height;
+	format->colorspace = info->fmt->colorspace;
+	format->code = info->fmt->mbus_code;
+	format->field = V4L2_FIELD_NONE;
+}
+
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+static int ov7670_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+	struct v4l2_mbus_framefmt *format =
+				v4l2_subdev_get_try_format(sd, fh->pad, 0);
+
+	ov7670_get_default_format(sd, format);
+
+	return 0;
+}
+#endif
+
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_subdev_core_ops ov7670_core_ops = {
@@ -1528,6 +1588,7 @@ static const struct v4l2_subdev_pad_ops ov7670_pad_ops = {
 	.enum_frame_interval = ov7670_enum_frame_interval,
 	.enum_frame_size = ov7670_enum_frame_size,
 	.enum_mbus_code = ov7670_enum_mbus_code,
+	.get_fmt = ov7670_get_fmt,
 	.set_fmt = ov7670_set_fmt,
 };
 
@@ -1537,6 +1598,12 @@ static const struct v4l2_subdev_ops ov7670_ops = {
 	.pad = &ov7670_pad_ops,
 };
 
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+static const struct v4l2_subdev_internal_ops ov7670_subdev_internal_ops = {
+	.open = ov7670_open,
+};
+#endif
+
 /* ----------------------------------------------------------------------- */
 
 static const struct ov7670_devtype ov7670_devdata[] = {
@@ -1589,6 +1656,11 @@ static int ov7670_probe(struct i2c_client *client,
 	sd = &info->sd;
 	v4l2_i2c_subdev_init(sd, client, &ov7670_ops);
 
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+	sd->internal_ops = &ov7670_subdev_internal_ops;
+	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+#endif
+
 	info->clock_speed = 30; /* default: a guess */
 	if (client->dev.platform_data) {
 		struct ov7670_config *config = client->dev.platform_data;
@@ -1645,6 +1717,9 @@ static int ov7670_probe(struct i2c_client *client,
 
 	info->devtype = &ov7670_devdata[id->driver_data];
 	info->fmt = &ov7670_formats[0];
+
+	ov7670_get_default_format(sd, &info->format);
+
 	info->clkrc = 0;
 
 	/* Set default frame rate to 30 fps */
-- 
cgit v1.2.3


From 71862f63f351078560a7ce35c6c2e2ca16750374 Mon Sep 17 00:00:00 2001
From: Wenyou Yang <wenyou.yang@microchip.com>
Date: Mon, 16 Oct 2017 05:14:27 +0200
Subject: media: ov7670: Add the ov7670_s_power function

Add the ov7670_s_power function which is responsible for
manipulating the power dowm mode through the PWDN pin and the reset
operation through the RESET pin, and keep it powered at all times.

[sakari.ailus@linux.intel.com: set pwdn_gpio direction only once]
Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov7670.c | 31 ++++++++++++++++++++++++++-----
 1 file changed, 26 insertions(+), 5 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov7670.c b/drivers/media/i2c/ov7670.c
index 73ceec63a8ca..950a0acf85fb 100644
--- a/drivers/media/i2c/ov7670.c
+++ b/drivers/media/i2c/ov7670.c
@@ -1544,6 +1544,22 @@ static int ov7670_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_regis
 }
 #endif
 
+static int ov7670_s_power(struct v4l2_subdev *sd, int on)
+{
+	struct ov7670_info *info = to_state(sd);
+
+	if (info->pwdn_gpio)
+		gpiod_set_value(info->pwdn_gpio, !on);
+	if (on && info->resetb_gpio) {
+		gpiod_set_value(info->resetb_gpio, 1);
+		usleep_range(500, 1000);
+		gpiod_set_value(info->resetb_gpio, 0);
+		usleep_range(3000, 5000);
+	}
+
+	return 0;
+}
+
 static void ov7670_get_default_format(struct v4l2_subdev *sd,
 				      struct v4l2_mbus_framefmt *format)
 {
@@ -1694,23 +1710,25 @@ static int ov7670_probe(struct i2c_client *client,
 	if (ret)
 		return ret;
 
-	ret = ov7670_init_gpio(client, info);
-	if (ret)
-		goto clk_disable;
-
 	info->clock_speed = clk_get_rate(info->clk) / 1000000;
 	if (info->clock_speed < 10 || info->clock_speed > 48) {
 		ret = -EINVAL;
 		goto clk_disable;
 	}
 
+	ret = ov7670_init_gpio(client, info);
+	if (ret)
+		goto clk_disable;
+
+	ov7670_s_power(sd, 1);
+
 	/* Make sure it's an ov7670 */
 	ret = ov7670_detect(sd);
 	if (ret) {
 		v4l_dbg(1, debug, client,
 			"chip found @ 0x%x (%s) is not an ov7670 chip.\n",
 			client->addr << 1, client->adapter->name);
-		goto clk_disable;
+		goto power_off;
 	}
 	v4l_info(client, "chip found @ 0x%02x (%s)\n",
 			client->addr << 1, client->adapter->name);
@@ -1789,6 +1807,8 @@ entity_cleanup:
 #endif
 hdl_free:
 	v4l2_ctrl_handler_free(&info->hdl);
+power_off:
+	ov7670_s_power(sd, 0);
 clk_disable:
 	clk_disable_unprepare(info->clk);
 	return ret;
@@ -1806,6 +1826,7 @@ static int ov7670_remove(struct i2c_client *client)
 #if defined(CONFIG_MEDIA_CONTROLLER)
 	media_entity_cleanup(&info->sd.entity);
 #endif
+	ov7670_s_power(sd, 0);
 	return 0;
 }
 
-- 
cgit v1.2.3


From 7bc9f038d02c2fc14e53e4aaca651deaf6d0de3f Mon Sep 17 00:00:00 2001
From: Jacob Chen <jacob-chen@iotwrt.com>
Date: Sun, 1 Oct 2017 12:22:37 +0200
Subject: media: i2c: OV5647: ensure clock lane in LP-11 state before streaming
 on

When I was supporting Rpi Camera Module on the ASUS Tinker board,
I found this driver have some issues with rockchip's mipi-csi driver.
It didn't place clock lane in LP-11 state before performing
D-PHY initialisation.

>From our experience, on some OV sensors,
LP-11 state is not achieved while BIT(5)-0x4800 is cleared.

So let's set BIT(5) and BIT(0) both while not streaming, in order to
coax the clock lane into LP-11 state.

0x4800 : MIPI CTRL 00
	BIT(5) : clock lane gate enable
		0: continuous
		1: none-continuous
	BIT(0) : manually set clock lane
		0: Not used
		1: used

Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Reviewed-by: Luis Oliveira <lolivei@synopsys.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov5647.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c
index 95ce90fdb876..247302d01f53 100644
--- a/drivers/media/i2c/ov5647.c
+++ b/drivers/media/i2c/ov5647.c
@@ -253,6 +253,10 @@ static int ov5647_stream_on(struct v4l2_subdev *sd)
 {
 	int ret;
 
+	ret = ov5647_write(sd, 0x4800, 0x04);
+	if (ret < 0)
+		return ret;
+
 	ret = ov5647_write(sd, 0x4202, 0x00);
 	if (ret < 0)
 		return ret;
@@ -264,6 +268,10 @@ static int ov5647_stream_off(struct v4l2_subdev *sd)
 {
 	int ret;
 
+	ret = ov5647_write(sd, 0x4800, 0x25);
+	if (ret < 0)
+		return ret;
+
 	ret = ov5647_write(sd, 0x4202, 0x0f);
 	if (ret < 0)
 		return ret;
@@ -320,7 +328,10 @@ static int __sensor_init(struct v4l2_subdev *sd)
 			return ret;
 	}
 
-	return ov5647_write(sd, 0x4800, 0x04);
+	/*
+	 * stream off to make the clock lane into LP-11 state.
+	 */
+	return ov5647_stream_off(sd);
 }
 
 static int ov5647_sensor_power(struct v4l2_subdev *sd, int on)
-- 
cgit v1.2.3


From cef6673440a29a9a2fd39a57d5ba28e6c68c7a76 Mon Sep 17 00:00:00 2001
From: Jacob Chen <jacob-chen@iotwrt.com>
Date: Sun, 1 Oct 2017 12:22:38 +0200
Subject: media: i2c: OV5647: change to use macro for the registers

ref docuemnt:
  ov5647-datasheet-v1.00-2009

Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Reviewed-by: Luis Oliveira <lolivei@synopsys.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/ov5647.c | 42 ++++++++++++++++++++++++++----------------
 1 file changed, 26 insertions(+), 16 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c
index 247302d01f53..34179d232a35 100644
--- a/drivers/media/i2c/ov5647.c
+++ b/drivers/media/i2c/ov5647.c
@@ -35,9 +35,18 @@
 
 #define SENSOR_NAME "ov5647"
 
-#define OV5647_SW_RESET		0x0103
-#define OV5647_REG_CHIPID_H	0x300A
-#define OV5647_REG_CHIPID_L	0x300B
+#define MIPI_CTRL00_CLOCK_LANE_GATE		BIT(5)
+#define MIPI_CTRL00_BUS_IDLE			BIT(2)
+#define MIPI_CTRL00_CLOCK_LANE_DISABLE		BIT(0)
+
+#define OV5647_SW_STANDBY		0x0100
+#define OV5647_SW_RESET			0x0103
+#define OV5647_REG_CHIPID_H		0x300A
+#define OV5647_REG_CHIPID_L		0x300B
+#define OV5640_REG_PAD_OUT		0x300D
+#define OV5647_REG_FRAME_OFF_NUMBER	0x4202
+#define OV5647_REG_MIPI_CTRL00		0x4800
+#define OV5647_REG_MIPI_CTRL14		0x4814
 
 #define REG_TERM 0xfffe
 #define VAL_TERM 0xfe
@@ -241,42 +250,43 @@ static int ov5647_set_virtual_channel(struct v4l2_subdev *sd, int channel)
 	u8 channel_id;
 	int ret;
 
-	ret = ov5647_read(sd, 0x4814, &channel_id);
+	ret = ov5647_read(sd, OV5647_REG_MIPI_CTRL14, &channel_id);
 	if (ret < 0)
 		return ret;
 
 	channel_id &= ~(3 << 6);
-	return ov5647_write(sd, 0x4814, channel_id | (channel << 6));
+	return ov5647_write(sd, OV5647_REG_MIPI_CTRL14, channel_id | (channel << 6));
 }
 
 static int ov5647_stream_on(struct v4l2_subdev *sd)
 {
 	int ret;
 
-	ret = ov5647_write(sd, 0x4800, 0x04);
+	ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, MIPI_CTRL00_BUS_IDLE);
 	if (ret < 0)
 		return ret;
 
-	ret = ov5647_write(sd, 0x4202, 0x00);
+	ret = ov5647_write(sd, OV5647_REG_FRAME_OFF_NUMBER, 0x00);
 	if (ret < 0)
 		return ret;
 
-	return ov5647_write(sd, 0x300D, 0x00);
+	return ov5647_write(sd, OV5640_REG_PAD_OUT, 0x00);
 }
 
 static int ov5647_stream_off(struct v4l2_subdev *sd)
 {
 	int ret;
 
-	ret = ov5647_write(sd, 0x4800, 0x25);
+	ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, MIPI_CTRL00_CLOCK_LANE_GATE
+			   | MIPI_CTRL00_BUS_IDLE | MIPI_CTRL00_CLOCK_LANE_DISABLE);
 	if (ret < 0)
 		return ret;
 
-	ret = ov5647_write(sd, 0x4202, 0x0f);
+	ret = ov5647_write(sd, OV5647_REG_FRAME_OFF_NUMBER, 0x0f);
 	if (ret < 0)
 		return ret;
 
-	return ov5647_write(sd, 0x300D, 0x01);
+	return ov5647_write(sd, OV5640_REG_PAD_OUT, 0x01);
 }
 
 static int set_sw_standby(struct v4l2_subdev *sd, bool standby)
@@ -284,7 +294,7 @@ static int set_sw_standby(struct v4l2_subdev *sd, bool standby)
 	int ret;
 	u8 rdval;
 
-	ret = ov5647_read(sd, 0x0100, &rdval);
+	ret = ov5647_read(sd, OV5647_SW_STANDBY, &rdval);
 	if (ret < 0)
 		return ret;
 
@@ -293,7 +303,7 @@ static int set_sw_standby(struct v4l2_subdev *sd, bool standby)
 	else
 		rdval |= 0x01;
 
-	return ov5647_write(sd, 0x0100, rdval);
+	return ov5647_write(sd, OV5647_SW_STANDBY, rdval);
 }
 
 static int __sensor_init(struct v4l2_subdev *sd)
@@ -302,7 +312,7 @@ static int __sensor_init(struct v4l2_subdev *sd)
 	u8 resetval, rdval;
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	ret = ov5647_read(sd, 0x0100, &rdval);
+	ret = ov5647_read(sd, OV5647_SW_STANDBY, &rdval);
 	if (ret < 0)
 		return ret;
 
@@ -317,13 +327,13 @@ static int __sensor_init(struct v4l2_subdev *sd)
 	if (ret < 0)
 		return ret;
 
-	ret = ov5647_read(sd, 0x0100, &resetval);
+	ret = ov5647_read(sd, OV5647_SW_STANDBY, &resetval);
 	if (ret < 0)
 		return ret;
 
 	if (!(resetval & 0x01)) {
 		dev_err(&client->dev, "Device was in SW standby");
-		ret = ov5647_write(sd, 0x0100, 0x01);
+		ret = ov5647_write(sd, OV5647_SW_STANDBY, 0x01);
 		if (ret < 0)
 			return ret;
 	}
-- 
cgit v1.2.3


From 9d39e46bdd9df945669a9039660a3194bdc8d0ac Mon Sep 17 00:00:00 2001
From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Tue, 17 Oct 2017 13:05:11 +0200
Subject: media: tc358743: validate lane count

The TC358743 does not support more than 4 data lanes. Check that the
lane count is valid.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/i2c/tc358743.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index 0b65096613d9..d3cf016ad0a0 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -1941,6 +1941,11 @@ static int tc358743_probe_of(struct tc358743_state *state)
 		goto free_endpoint;
 	}
 
+	if (endpoint->bus.mipi_csi2.num_data_lanes > 4) {
+		dev_err(dev, "invalid number of lanes\n");
+		goto free_endpoint;
+	}
+
 	state->bus = endpoint->bus.mipi_csi2;
 
 	ret = clk_prepare_enable(refclk);
-- 
cgit v1.2.3


From a88cd60fc94e7e04e61adeb1c6f6ba16031913f8 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Mon, 16 Oct 2017 19:10:27 -0400
Subject: media: tc358743: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Mats Randgaard <matrandg@cisco.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/tc358743.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index d3cf016ad0a0..2b8181469b93 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -1481,9 +1481,9 @@ static irqreturn_t tc358743_irq_handler(int irq, void *dev_id)
 	return handled ? IRQ_HANDLED : IRQ_NONE;
 }
 
-static void tc358743_irq_poll_timer(unsigned long arg)
+static void tc358743_irq_poll_timer(struct timer_list *t)
 {
-	struct tc358743_state *state = (struct tc358743_state *)arg;
+	struct tc358743_state *state = from_timer(state, t, timer);
 	unsigned int msecs;
 
 	schedule_work(&state->work_i2c_poll);
@@ -2153,8 +2153,7 @@ static int tc358743_probe(struct i2c_client *client,
 	} else {
 		INIT_WORK(&state->work_i2c_poll,
 			  tc358743_work_i2c_poll);
-		setup_timer(&state->timer, tc358743_irq_poll_timer,
-			    (unsigned long)state);
+		timer_setup(&state->timer, tc358743_irq_poll_timer, 0);
 		state->timer.expires = jiffies +
 				       msecs_to_jiffies(POLL_INTERVAL_MS);
 		add_timer(&state->timer);
-- 
cgit v1.2.3


From 60793f4d3e79c3b90314f649d56ffd583046752d Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Mon, 16 Oct 2017 19:10:53 -0400
Subject: media: tvaudio: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/tvaudio.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/tvaudio.c b/drivers/media/i2c/tvaudio.c
index ce86534450ac..16a1e08ce06c 100644
--- a/drivers/media/i2c/tvaudio.c
+++ b/drivers/media/i2c/tvaudio.c
@@ -300,9 +300,9 @@ static int chip_cmd(struct CHIPSTATE *chip, char *name, audiocmd *cmd)
  *   if available, ...
  */
 
-static void chip_thread_wake(unsigned long data)
+static void chip_thread_wake(struct timer_list *t)
 {
-	struct CHIPSTATE *chip = (struct CHIPSTATE*)data;
+	struct CHIPSTATE *chip = from_timer(chip, t, wt);
 	wake_up_process(chip->thread);
 }
 
@@ -1995,7 +1995,7 @@ static int tvaudio_probe(struct i2c_client *client, const struct i2c_device_id *
 	v4l2_ctrl_handler_setup(&chip->hdl);
 
 	chip->thread = NULL;
-	init_timer(&chip->wt);
+	timer_setup(&chip->wt, chip_thread_wake, 0);
 	if (desc->flags & CHIP_NEED_CHECKMODE) {
 		if (!desc->getrxsubchans || !desc->setaudmode) {
 			/* This shouldn't be happen. Warn user, but keep working
@@ -2005,8 +2005,6 @@ static int tvaudio_probe(struct i2c_client *client, const struct i2c_device_id *
 			return 0;
 		}
 		/* start async thread */
-		chip->wt.function = chip_thread_wake;
-		chip->wt.data     = (unsigned long)chip;
 		chip->thread = kthread_run(chip_thread, chip, "%s",
 					   client->name);
 		if (IS_ERR(chip->thread)) {
-- 
cgit v1.2.3


From 5cc72c472654c493c461898d892e87cde97994be Mon Sep 17 00:00:00 2001
From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Thu, 19 Oct 2017 12:31:20 -0400
Subject: media: adv7180: don't clear V4L2_SUBDEV_FL_IS_I2C

The v4l2_i2c_subdev_init() sets V4L2_SUBDEV_FL_IS_I2C flag in the
subdev->flags.  But this driver overwrites subdev->flags immediately after
calling v4l2_i2c_subdev_init().  So V4L2_SUBDEV_FL_IS_I2C is not set after
all.

This stops breaking subdev->flags and preserves V4L2_SUBDEV_FL_IS_I2C.

Side note: According to the comment in v4l2_device_unregister(), this is
problematic only if the device is platform bus device.  Device tree or
ACPI based devices are not affected.

Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/adv7180.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index 3df28f2f9b38..6fb818a775db 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -1328,7 +1328,7 @@ static int adv7180_probe(struct i2c_client *client,
 	state->input = 0;
 	sd = &state->sd;
 	v4l2_i2c_subdev_init(sd, client, &adv7180_ops);
-	sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
+	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
 
 	ret = adv7180_init_controls(state);
 	if (ret)
-- 
cgit v1.2.3


From baf1b186eaa1e0ac3a385c92b1a955b10c59ee84 Mon Sep 17 00:00:00 2001
From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Thu, 19 Oct 2017 12:31:21 -0400
Subject: media: max2175: don't clear V4L2_SUBDEV_FL_IS_I2C

The v4l2_i2c_subdev_init() sets V4L2_SUBDEV_FL_IS_I2C flag in the
subdev->flags.  But this driver overwrites subdev->flags immediately after
calling v4l2_i2c_subdev_init().  So V4L2_SUBDEV_FL_IS_I2C is not set after
all.

This stops breaking subdev->flags and preserves V4L2_SUBDEV_FL_IS_I2C.

Side note: According to the comment in v4l2_device_unregister(), this is
problematic only if the device is platform bus device.  Device tree or
ACPI based devices are not affected.

Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/max2175.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/max2175.c b/drivers/media/i2c/max2175.c
index bf0e821a2b93..2f1966bdc473 100644
--- a/drivers/media/i2c/max2175.c
+++ b/drivers/media/i2c/max2175.c
@@ -1345,7 +1345,7 @@ static int max2175_probe(struct i2c_client *client,
 	v4l2_i2c_subdev_init(sd, client, &max2175_ops);
 	ctx->client = client;
 
-	sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
+	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 
 	/* Controls */
 	hdl = &ctx->ctrl_hdl;
-- 
cgit v1.2.3


From 6b725eb682a634c6742660f85aa5736ee1009a42 Mon Sep 17 00:00:00 2001
From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Thu, 19 Oct 2017 12:31:22 -0400
Subject: media: ov2640: don't clear V4L2_SUBDEV_FL_IS_I2C

The v4l2_i2c_subdev_init() sets V4L2_SUBDEV_FL_IS_I2C flag in the
subdev->flags.  But this driver overwrites subdev->flags immediately after
calling v4l2_i2c_subdev_init().  So V4L2_SUBDEV_FL_IS_I2C is not set after
all.

This stops breaking subdev->flags and preserves V4L2_SUBDEV_FL_IS_I2C.

Side note: According to the comment in v4l2_device_unregister(), this is
problematic only if the device is platform bus device.  Device tree or
ACPI based devices are not affected.

Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/ov2640.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov2640.c b/drivers/media/i2c/ov2640.c
index 38b8bab7e6aa..518868388d65 100644
--- a/drivers/media/i2c/ov2640.c
+++ b/drivers/media/i2c/ov2640.c
@@ -1115,7 +1115,7 @@ static int ov2640_probe(struct i2c_client *client,
 		goto err_clk;
 
 	v4l2_i2c_subdev_init(&priv->subdev, client, &ov2640_subdev_ops);
-	priv->subdev.flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
+	priv->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 	v4l2_ctrl_handler_init(&priv->hdl, 2);
 	v4l2_ctrl_new_std(&priv->hdl, &ov2640_ctrl_ops,
 			V4L2_CID_VFLIP, 0, 1, 1, 0);
-- 
cgit v1.2.3


From dae82d9d47e0ffeed7f7efee4e760863cf6fd542 Mon Sep 17 00:00:00 2001
From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Thu, 19 Oct 2017 12:31:23 -0400
Subject: media: ov5640: don't clear V4L2_SUBDEV_FL_IS_I2C

The v4l2_i2c_subdev_init() sets V4L2_SUBDEV_FL_IS_I2C flag in the
subdev->flags.  But this driver overwrites subdev->flags immediately after
calling v4l2_i2c_subdev_init().  So V4L2_SUBDEV_FL_IS_I2C is not set after
all.

This stops breaking subdev->flags and preserves V4L2_SUBDEV_FL_IS_I2C.

Side note: According to the comment in v4l2_device_unregister(), this is
problematic only if the device is platform bus device.  Device tree or
ACPI based devices are not affected.

Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/ov5640.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 39a2269c0bee..c89ed6609738 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -2271,7 +2271,7 @@ static int ov5640_probe(struct i2c_client *client,
 
 	v4l2_i2c_subdev_init(&sensor->sd, client, &ov5640_subdev_ops);
 
-	sensor->sd.flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
+	sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 	sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
 	sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
 	ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
-- 
cgit v1.2.3


From f283c01b8094da9454f4b51c997f578227c29d95 Mon Sep 17 00:00:00 2001
From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Mon, 23 Oct 2017 13:30:26 -0400
Subject: media: ov9650: remove unnecessary terminated entry in menu items
 array

The test_pattern_menu[] array has two valid items and a null terminated
item.  So the control's maximum value which is passed to
v4l2_ctrl_new_std_menu_items() should be one.  However,
'ARRAY_SIZE(test_pattern_menu) - 1' is actually passed and it's not
correct.

Fix it by removing unnecessary terminated entry and let the correct
control's maximum value be passed to v4l2_ctrl_new_std_menu_items().

Cc: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/ov9650.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov9650.c b/drivers/media/i2c/ov9650.c
index 6ffb460e8589..69433e1e2533 100644
--- a/drivers/media/i2c/ov9650.c
+++ b/drivers/media/i2c/ov9650.c
@@ -985,7 +985,6 @@ static const struct v4l2_ctrl_ops ov965x_ctrl_ops = {
 static const char * const test_pattern_menu[] = {
 	"Disabled",
 	"Color bars",
-	NULL
 };
 
 static int ov965x_initialize_controls(struct ov965x *ov965x)
-- 
cgit v1.2.3


From c121ce59152a9cc00fbff0ca12becfc0ef0b8663 Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Sun, 24 Sep 2017 18:53:38 -0400
Subject: media: smiapp: Add support for flash and lens devices

Parse async sub-devices related to the sensor by switching the async
sub-device registration function.

These types devices aren't directly related to the sensor, but are
nevertheless handled by the smiapp driver due to the relationship of these
component to the main part of the camera module --- the sensor.

This does not yet address providing the user space with information on how
to associate the sensor or lens devices but the kernel now has the
necessary information to do that.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/smiapp/smiapp-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index faf567569799..e6b717b83b18 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -3093,7 +3093,7 @@ static int smiapp_probe(struct i2c_client *client,
 	if (rval < 0)
 		goto out_media_entity_cleanup;
 
-	rval = v4l2_async_register_subdev(&sensor->src->sd);
+	rval = v4l2_async_register_subdev_sensor_common(&sensor->src->sd);
 	if (rval < 0)
 		goto out_media_entity_cleanup;
 
-- 
cgit v1.2.3


From d8932f38c10ffb4b604c97d0765b500e8964cbd1 Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Mon, 25 Sep 2017 05:51:51 -0400
Subject: media: et8ek8: Add support for flash and lens devices

Parse async sub-devices related to the sensor by switching the async
sub-device registration function.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/et8ek8/et8ek8_driver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/et8ek8/et8ek8_driver.c b/drivers/media/i2c/et8ek8/et8ek8_driver.c
index c14f0fd6ded3..e9eff9039ef5 100644
--- a/drivers/media/i2c/et8ek8/et8ek8_driver.c
+++ b/drivers/media/i2c/et8ek8/et8ek8_driver.c
@@ -1453,7 +1453,7 @@ static int et8ek8_probe(struct i2c_client *client,
 		goto err_mutex;
 	}
 
-	ret = v4l2_async_register_subdev(&sensor->subdev);
+	ret = v4l2_async_register_subdev_sensor_common(&sensor->subdev);
 	if (ret < 0)
 		goto err_entity;
 
-- 
cgit v1.2.3


From a42e78da596b18319ebc447f60c22fd6ce32322b Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Mon, 25 Sep 2017 05:51:25 -0400
Subject: media: ov5670: Add support for flash and lens devices

Parse async sub-devices related to the sensor by switching the async
sub-device registration function.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/ov5670.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov5670.c b/drivers/media/i2c/ov5670.c
index a65469f88e36..9f9196568eb8 100644
--- a/drivers/media/i2c/ov5670.c
+++ b/drivers/media/i2c/ov5670.c
@@ -2529,7 +2529,7 @@ static int ov5670_probe(struct i2c_client *client)
 	}
 
 	/* Async register for subdev */
-	ret = v4l2_async_register_subdev(&ov5670->sd);
+	ret = v4l2_async_register_subdev_sensor_common(&ov5670->sd);
 	if (ret < 0) {
 		err_msg = "v4l2_async_register_subdev() error";
 		goto error_entity_cleanup;
-- 
cgit v1.2.3


From 2e8a9fbb79508261703835dd4977014249c9e18f Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Mon, 25 Sep 2017 05:50:16 -0400
Subject: media: ov13858: Add support for flash and lens devices

Parse async sub-devices related to the sensor by switching the async
sub-device registration function.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/ov13858.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c
index fdce2befed02..bf7d06f3f21a 100644
--- a/drivers/media/i2c/ov13858.c
+++ b/drivers/media/i2c/ov13858.c
@@ -1761,7 +1761,7 @@ static int ov13858_probe(struct i2c_client *client,
 		goto error_handler_free;
 	}
 
-	ret = v4l2_async_register_subdev(&ov13858->sd);
+	ret = v4l2_async_register_subdev_sensor_common(&ov13858->sd);
 	if (ret < 0)
 		goto error_media_entity;
 
-- 
cgit v1.2.3


From 2b00e30fc33de720cedad69427931aa393cdbaf0 Mon Sep 17 00:00:00 2001
From: Colin Ian King <colin.king@canonical.com>
Date: Fri, 3 Nov 2017 02:41:06 -0400
Subject: media: imx274: fix missing return assignment from call to
 imx274_mode_regs

The variable ret is being checked for failure however it is not being set
from the return status from the call to imx274_mode_regs. Currently ret is
alwayus zero and the check is redundant. Fix this by assigning it.

Detected by CoverityScan, CID#1460278 ("Logically dead code")

Fixes: 0985dd306f72 ("media: imx274: V4l2 driver for Sony imx274 CMOS sensor")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 drivers/media/i2c/imx274.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/media/i2c')

diff --git a/drivers/media/i2c/imx274.c b/drivers/media/i2c/imx274.c
index ab6a5f31da74..800b9bf9cdd3 100644
--- a/drivers/media/i2c/imx274.c
+++ b/drivers/media/i2c/imx274.c
@@ -1059,7 +1059,7 @@ static int imx274_s_stream(struct v4l2_subdev *sd, int on)
 
 	if (on) {
 		/* load mode registers */
-		imx274_mode_regs(imx274, imx274->mode_index);
+		ret = imx274_mode_regs(imx274, imx274->mode_index);
 		if (ret)
 			goto fail;
 
-- 
cgit v1.2.3