arm: tegra: dalmore: Runtime panel detection

Bug 1182416

Change-Id: I362f892c32e0f3e8e32e136b3595c71b696b2bae
Signed-off-by: Vineel Kumar Reddy Kovvuri <vineelkumarr@nvidia.com>
Reviewed-on: http://git-master/r/169066
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>

1 files changed, 453 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/panel-a-1080p-11-6.c b/arch/arm/mach-tegra/panel-a-1080p-11-6.c
new file mode 100644
index 000000000000..d795c57681fb
--- /dev/null
+++ b/arch/arm/mach-tegra/panel-a-1080p-11-6.c
@@ -0,0 +1,453 @@
+/*
+ * arch/arm/mach-tegra/panel-a-1080p-11-6.c
+ *
+ * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 <mach/dc.h>
+#include <mach/iomap.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/tegra_pwm_bl.h>
+#include <linux/regulator/consumer.h>
+#include <linux/pwm_backlight.h>
+#include <linux/max8831_backlight.h>
+#include <linux/leds.h>
+#include <linux/ioport.h>
+#include "board.h"
+#include "board-panel.h"
+#include "devices.h"
+#include "gpio-names.h"
+#include "tegra11_host1x_devices.h"
+
+#define TEGRA_DSI_GANGED_MODE	0
+
+#define DSI_PANEL_RESET		1
+#define DSI_PANEL_RST_GPIO	TEGRA_GPIO_PH3
+#define DSI_PANEL_BL_PWM	TEGRA_GPIO_PH1
+
+#define DC_CTRL_MODE	TEGRA_DC_OUT_CONTINUOUS_MODE
+
+#define en_vdd_bl	TEGRA_GPIO_PG0
+#define lvds_en		TEGRA_GPIO_PG3
+
+
+static bool reg_requested;
+static bool gpio_requested;
+static struct platform_device *disp_device;
+static struct regulator *avdd_lcd_3v3;
+static struct regulator *vdd_lcd_bl;
+static struct regulator *vdd_lcd_bl_en;
+static struct regulator *dvdd_lcd_1v8;
+static struct regulator *vdd_ds_1v8;
+
+#define en_vdd_bl	TEGRA_GPIO_PG0
+#define lvds_en		TEGRA_GPIO_PG3
+
+static tegra_dc_bl_output dsi_a_1080p_11_6_bl_output_measured = {
+	0, 0, 1, 2, 3, 4, 5, 6,
+	7, 8, 9, 9, 10, 11, 12, 13,
+	13, 14, 15, 16, 17, 17, 18, 19,
+	20, 21, 22, 22, 23, 24, 25, 26,
+	27, 27, 28, 29, 30, 31, 32, 32,
+	33, 34, 35, 36, 37, 37, 38, 39,
+	40, 41, 42, 42, 43, 44, 45, 46,
+	47, 48, 48, 49, 50, 51, 52, 53,
+	54, 55, 56, 57, 57, 58, 59, 60,
+	61, 62, 63, 64, 65, 66, 67, 68,
+	69, 70, 71, 71, 72, 73, 74, 75,
+	76, 77, 77, 78, 79, 80, 81, 82,
+	83, 84, 85, 87, 88, 89, 90, 91,
+	92, 93, 94, 95, 96, 97, 98, 99,
+	100, 101, 102, 103, 104, 105, 106, 107,
+	108, 109, 110, 111, 112, 113, 115, 116,
+	117, 118, 119, 120, 121, 122, 123, 124,
+	125, 126, 127, 128, 129, 130, 131, 132,
+	133, 134, 135, 136, 137, 138, 139, 141,
+	142, 143, 144, 146, 147, 148, 149, 151,
+	152, 153, 154, 155, 156, 157, 158, 158,
+	159, 160, 161, 162, 163, 165, 166, 167,
+	168, 169, 170, 171, 172, 173, 174, 176,
+	177, 178, 179, 180, 182, 183, 184, 185,
+	186, 187, 188, 189, 190, 191, 192, 194,
+	195, 196, 197, 198, 199, 200, 201, 202,
+	203, 204, 205, 206, 207, 208, 209, 210,
+	211, 212, 213, 214, 215, 216, 217, 219,
+	220, 221, 222, 224, 225, 226, 227, 229,
+	230, 231, 232, 233, 234, 235, 236, 238,
+	239, 240, 241, 242, 243, 244, 245, 246,
+	247, 248, 249, 250, 251, 252, 253, 255
+};
+
+static struct tegra_dsi_cmd dsi_a_1080p_11_6_init_cmd[] = {
+	/* no init command required */
+};
+
+static struct tegra_dsi_out dsi_a_1080p_11_6_pdata = {
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+	.n_data_lanes = 2,
+	.controller_vs = DSI_VS_0,
+#else
+	.controller_vs = DSI_VS_1,
+#endif
+	.dsi2edp_bridge_enable = true,
+	.n_data_lanes = 4,
+	.video_burst_mode = TEGRA_DSI_VIDEO_NONE_BURST_MODE_WITH_SYNC_END,
+
+	.pixel_format = TEGRA_DSI_PIXEL_FORMAT_24BIT_P,
+	.refresh_rate = 60,
+	.virtual_channel = TEGRA_DSI_VIRTUAL_CHANNEL_0,
+
+	.dsi_instance = DSI_INSTANCE_0,
+
+	.panel_reset = DSI_PANEL_RESET,
+	.power_saving_suspend = true,
+	.video_data_type = TEGRA_DSI_VIDEO_TYPE_VIDEO_MODE,
+	.video_clock_mode = TEGRA_DSI_VIDEO_CLOCK_TX_ONLY,
+	.dsi_init_cmd = dsi_a_1080p_11_6_init_cmd,
+	.n_init_cmd = ARRAY_SIZE(dsi_a_1080p_11_6_init_cmd),
+};
+
+static int dalmore_dsi_regulator_get(struct device *dev)
+{
+	int err = 0;
+
+	if (reg_requested)
+		return 0;
+	dvdd_lcd_1v8 = regulator_get(dev, "dvdd_lcd");
+	if (IS_ERR_OR_NULL(dvdd_lcd_1v8)) {
+		pr_err("dvdd_lcd regulator get failed\n");
+		err = PTR_ERR(dvdd_lcd_1v8);
+		dvdd_lcd_1v8 = NULL;
+		goto fail;
+	}
+	vdd_ds_1v8 = regulator_get(dev, "vdd_ds_1v8");
+	if (IS_ERR_OR_NULL(vdd_ds_1v8)) {
+		pr_err("vdd_ds_1v8 regulator get failed\n");
+		err = PTR_ERR(vdd_ds_1v8);
+		vdd_ds_1v8 = NULL;
+		goto fail;
+	}
+	avdd_lcd_3v3 = regulator_get(dev, "avdd_lcd");
+	if (IS_ERR_OR_NULL(avdd_lcd_3v3)) {
+		pr_err("avdd_lcd regulator get failed\n");
+		err = PTR_ERR(avdd_lcd_3v3);
+		avdd_lcd_3v3 = NULL;
+		goto fail;
+	}
+
+	vdd_lcd_bl = regulator_get(dev, "vdd_lcd_bl");
+	if (IS_ERR_OR_NULL(vdd_lcd_bl)) {
+		pr_err("vdd_lcd_bl regulator get failed\n");
+		err = PTR_ERR(vdd_lcd_bl);
+		vdd_lcd_bl = NULL;
+		goto fail;
+	}
+
+	vdd_lcd_bl_en = regulator_get(dev, "vdd_lcd_bl_en");
+	if (IS_ERR_OR_NULL(vdd_lcd_bl_en)) {
+		pr_err("vdd_lcd_bl_en regulator get failed\n");
+		err = PTR_ERR(vdd_lcd_bl_en);
+		vdd_lcd_bl_en = NULL;
+		goto fail;
+	}
+	reg_requested = true;
+	return 0;
+fail:
+	return err;
+}
+
+static int dalmore_dsi_gpio_get(void)
+{
+	int err = 0;
+
+	if (gpio_requested)
+		return 0;
+
+	err = gpio_request(DSI_PANEL_RST_GPIO, "panel rst");
+	if (err < 0) {
+		pr_err("panel reset gpio request failed\n");
+		goto fail;
+	}
+
+	/* free pwm GPIO */
+	err = gpio_request(DSI_PANEL_BL_PWM, "panel pwm");
+	if (err < 0) {
+		pr_err("panel pwm gpio request failed\n");
+		goto fail;
+	}
+	gpio_free(DSI_PANEL_BL_PWM);
+
+	err = gpio_request(en_vdd_bl, "edp bridge 1v2 enable");
+	if (err < 0) {
+		pr_err("edp bridge 1v2 enable gpio request failed\n");
+		goto fail;
+	}
+
+	err = gpio_request(lvds_en, "edp bridge 1v8 enable");
+	if (err < 0) {
+		pr_err("edp bridge 1v8 enable gpio request failed\n");
+		goto fail;
+	}
+	gpio_requested = true;
+	return 0;
+fail:
+	return err;
+}
+
+static int dsi_a_1080p_11_6_enable(struct device *dev)
+{
+	int err = 0;
+
+	err = dalmore_dsi_regulator_get(dev);
+	if (err < 0) {
+		pr_err("dsi regulator get failed\n");
+		goto fail;
+	}
+	err = dalmore_dsi_gpio_get();
+	if (err < 0) {
+		pr_err("dsi gpio request failed\n");
+		goto fail;
+	}
+
+	if (vdd_ds_1v8) {
+		err = regulator_enable(vdd_ds_1v8);
+		if (err < 0) {
+			pr_err("vdd_ds_1v8 regulator enable failed\n");
+			goto fail;
+		}
+	}
+
+	if (dvdd_lcd_1v8) {
+		err = regulator_enable(dvdd_lcd_1v8);
+		if (err < 0) {
+			pr_err("dvdd_lcd regulator enable failed\n");
+			goto fail;
+		}
+	}
+
+	if (avdd_lcd_3v3) {
+		err = regulator_enable(avdd_lcd_3v3);
+		if (err < 0) {
+			pr_err("avdd_lcd regulator enable failed\n");
+			goto fail;
+		}
+	}
+
+	if (vdd_lcd_bl) {
+		err = regulator_enable(vdd_lcd_bl);
+		if (err < 0) {
+			pr_err("vdd_lcd_bl regulator enable failed\n");
+			goto fail;
+		}
+	}
+
+	if (vdd_lcd_bl_en) {
+		err = regulator_enable(vdd_lcd_bl_en);
+		if (err < 0) {
+			pr_err("vdd_lcd_bl_en regulator enable failed\n");
+			goto fail;
+		}
+	}
+
+	msleep(100);
+#if DSI_PANEL_RESET
+	gpio_direction_output(DSI_PANEL_RST_GPIO, 1);
+	usleep_range(1000, 5000);
+	gpio_set_value(DSI_PANEL_RST_GPIO, 0);
+	msleep(150);
+	gpio_set_value(DSI_PANEL_RST_GPIO, 1);
+	msleep(1500);
+#endif
+
+	gpio_direction_output(en_vdd_bl, 1);
+	msleep(100);
+	gpio_direction_output(lvds_en, 1);
+	return 0;
+fail:
+	return err;
+}
+
+static int dsi_a_1080p_11_6_disable(void)
+{
+	gpio_set_value(lvds_en, 0);
+	msleep(100);
+	gpio_set_value(en_vdd_bl, 0);
+	if (vdd_lcd_bl)
+		regulator_disable(vdd_lcd_bl);
+
+	if (vdd_lcd_bl_en)
+		regulator_disable(vdd_lcd_bl_en);
+
+	if (avdd_lcd_3v3)
+		regulator_disable(avdd_lcd_3v3);
+
+	if (dvdd_lcd_1v8)
+		regulator_disable(dvdd_lcd_1v8);
+
+	if (vdd_ds_1v8)
+		regulator_disable(vdd_ds_1v8);
+
+	return 0;
+}
+
+static int dsi_a_1080p_11_6_postsuspend(void)
+{
+	return 0;
+}
+
+static struct tegra_dc_mode dsi_a_1080p_11_6_modes[] = {
+	{
+		.pclk = 144250000,
+		.h_ref_to_sync = 4,
+		.v_ref_to_sync = 1,
+		.h_sync_width = 28,
+		.v_sync_width = 5,
+		.h_back_porch = 148,
+		.v_back_porch = 23,
+		.h_active = 1920,
+		.v_active = 1080,
+		.h_front_porch = 66,
+		.v_front_porch = 4,
+	},
+};
+
+static int dsi_a_1080p_11_6_bl_notify(struct device *unused, int brightness)
+{
+	atomic_t __maybe_unused sd_brightness = ATOMIC_INIT(255);
+	int cur_sd_brightness = atomic_read(&sd_brightness);
+
+	/* Apply any backlight response curve */
+	if (brightness > 255)
+		pr_info("Error: Brightness > 255!\n");
+	else
+		brightness = dsi_a_1080p_11_6_bl_output_measured[brightness];
+
+	/* SD brightness is a percentage */
+	brightness = (brightness * cur_sd_brightness) / 255;
+
+	return brightness;
+}
+
+static int dsi_a_1080p_11_6_check_fb(struct device *dev, struct fb_info *info)
+{
+	return info->device == &disp_device->dev;
+}
+
+static struct platform_pwm_backlight_data dsi_a_1080p_11_6_bl_data = {
+	.pwm_id		= 1,
+	.max_brightness	= 255,
+	.dft_brightness	= 224,
+	.pwm_period_ns	= 1000000,
+	.notify		= dsi_a_1080p_11_6_bl_notify,
+	/* Only toggle backlight on fb blank notifications for disp1 */
+	.check_fb	= dsi_a_1080p_11_6_check_fb,
+};
+
+static struct platform_device __maybe_unused
+		dsi_a_1080p_11_6_bl_device __initdata = {
+	.name	= "pwm-backlight",
+	.id	= -1,
+	.dev	= {
+		.platform_data = &dsi_a_1080p_11_6_bl_data,
+	},
+};
+
+static struct platform_device __maybe_unused
+			*dsi_a_1080p_11_6_bl_devices[] __initdata = {
+	&tegra_pwfm1_device,
+	&dsi_a_1080p_11_6_bl_device,
+};
+
+static int  __init dsi_a_1080p_11_6_register_bl_dev(void)
+{
+	int err = 0;
+	err = platform_add_devices(dsi_a_1080p_11_6_bl_devices,
+				ARRAY_SIZE(dsi_a_1080p_11_6_bl_devices));
+	if (err) {
+		pr_err("disp1 bl device registration failed");
+		return err;
+	}
+	return err;
+}
+
+static void dsi_a_1080p_11_6_set_disp_device(
+	struct platform_device *dalmore_display_device)
+{
+	disp_device = dalmore_display_device;
+}
+
+static void dsi_a_1080p_11_6_resources_init(struct resource *
+resources, int n_resources)
+{
+	int i;
+	for (i = 0; i < n_resources; i++) {
+		struct resource *r = &resources[i];
+		if (resource_type(r) == IORESOURCE_MEM &&
+			!strcmp(r->name, "dsi_regs")) {
+			r->start = TEGRA_DSI_BASE;
+			r->end = TEGRA_DSI_BASE + TEGRA_DSI_SIZE - 1;
+		}
+	}
+}
+
+static void dsi_a_1080p_11_6_dc_out_init(struct tegra_dc_out *dc)
+{
+	dc->dsi = &dsi_a_1080p_11_6_pdata;
+	dc->parent_clk = "pll_d_out0";
+	dc->modes = dsi_a_1080p_11_6_modes;
+	dc->n_modes = ARRAY_SIZE(dsi_a_1080p_11_6_modes);
+	dc->enable = dsi_a_1080p_11_6_enable;
+	dc->disable = dsi_a_1080p_11_6_disable;
+	dc->postsuspend	= dsi_a_1080p_11_6_postsuspend,
+	dc->width = 256;
+	dc->height = 144;
+	dc->flags = DC_CTRL_MODE;
+}
+
+static void dsi_a_1080p_11_6_fb_data_init(struct tegra_fb_data *fb)
+{
+	fb->xres = dsi_a_1080p_11_6_modes[0].h_active;
+	fb->yres = dsi_a_1080p_11_6_modes[0].v_active;
+}
+
+static void
+dsi_a_1080p_11_6_sd_settings_init(struct tegra_dc_sd_settings *settings)
+{
+	settings->bl_device_name = "pwm-backlight";
+}
+
+static struct i2c_board_info dalmore_tc358770_dsi2edp_board_info __initdata = {
+		I2C_BOARD_INFO("tc358770_dsi2edp", 0x68),
+};
+
+static int __init dsi_a_1080p_11_6_i2c_bridge_register(void)
+{
+	int err = 0;
+	err = i2c_register_board_info(0,
+			&dalmore_tc358770_dsi2edp_board_info, 1);
+	return err;
+}
+struct tegra_panel __initdata dsi_a_1080p_11_6 = {
+	.init_sd_settings = dsi_a_1080p_11_6_sd_settings_init,
+	.init_dc_out = dsi_a_1080p_11_6_dc_out_init,
+	.init_fb_data = dsi_a_1080p_11_6_fb_data_init,
+	.init_resources = dsi_a_1080p_11_6_resources_init,
+	.register_bl_dev = dsi_a_1080p_11_6_register_bl_dev,
+	.register_i2c_bridge = dsi_a_1080p_11_6_i2c_bridge_register,
+	.set_disp_device = dsi_a_1080p_11_6_set_disp_device,
+};
+EXPORT_SYMBOL(dsi_a_1080p_11_6);
+