Merge tag 'omapdss-for-3.7' of git://gitorious.org/linux-omap-dss2/linux into fbdev-next

Omapdss driver changes for the 3.7 merge window.

Notable changes:

* Basic writeback support for DISPC level. Writeback is not yet usable, though,
  as we need higher level code to actually expose the writeback feature to
  userspace.
* Rewriting the omapdss output drivers. We're trying to remove the hard links
  between the omapdss and the panels, and this rewrite work moves us closer to
  that goal.
* Cleanup and restructuring patches that have been made while working on device
  tree support for omapdss. Device tree support is still some way ahead, but
  these patches are good cleanups in themselves.
* Basic OMAP5 DSS support for DPI and DSI outputs.
* Workaround for the problem that GFX overlay's fifo is too small for high
  resolution scenarios, causing underflows.
* Cleanups that remove dependencies to omap platform code.

1 files changed, 181 insertions, 66 deletions

diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index 060216fdc578..a48a7dd75b33 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -32,6 +32,8 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/clk.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
 #include <video/omapdss.h>
 
 #include "ti_hdmi.h"
@@ -61,6 +63,13 @@ static struct {
 	struct hdmi_ip_data ip_data;
 
 	struct clk *sys_clk;
+	struct regulator *vdda_hdmi_dac_reg;
+
+	int ct_cp_hpd_gpio;
+	int ls_oe_gpio;
+	int hpd_gpio;
+
+	struct omap_dss_output output;
 } hdmi;
 
 /*
@@ -314,12 +323,47 @@ static void hdmi_runtime_put(void)
 
 static int __init hdmi_init_display(struct omap_dss_device *dssdev)
 {
+	int r;
+
+	struct gpio gpios[] = {
+		{ hdmi.ct_cp_hpd_gpio, GPIOF_OUT_INIT_LOW, "hdmi_ct_cp_hpd" },
+		{ hdmi.ls_oe_gpio, GPIOF_OUT_INIT_LOW, "hdmi_ls_oe" },
+		{ hdmi.hpd_gpio, GPIOF_DIR_IN, "hdmi_hpd" },
+	};
+
 	DSSDBG("init_display\n");
 
 	dss_init_hdmi_ip_ops(&hdmi.ip_data);
+
+	if (hdmi.vdda_hdmi_dac_reg == NULL) {
+		struct regulator *reg;
+
+		reg = devm_regulator_get(&hdmi.pdev->dev, "vdda_hdmi_dac");
+
+		if (IS_ERR(reg)) {
+			DSSERR("can't get VDDA_HDMI_DAC regulator\n");
+			return PTR_ERR(reg);
+		}
+
+		hdmi.vdda_hdmi_dac_reg = reg;
+	}
+
+	r = gpio_request_array(gpios, ARRAY_SIZE(gpios));
+	if (r)
+		return r;
+
 	return 0;
 }
 
+static void __exit hdmi_uninit_display(struct omap_dss_device *dssdev)
+{
+	DSSDBG("uninit_display\n");
+
+	gpio_free(hdmi.ct_cp_hpd_gpio);
+	gpio_free(hdmi.ls_oe_gpio);
+	gpio_free(hdmi.hpd_gpio);
+}
+
 static const struct hdmi_config *hdmi_find_timing(
 					const struct hdmi_config *timings_arr,
 					int len)
@@ -459,32 +503,30 @@ static void hdmi_compute_pll(struct omap_dss_device *dssdev, int phy,
 static int hdmi_power_on(struct omap_dss_device *dssdev)
 {
 	int r;
-	const struct hdmi_config *timing;
 	struct omap_video_timings *p;
+	struct omap_overlay_manager *mgr = dssdev->output->manager;
 	unsigned long phy;
 
+	gpio_set_value(hdmi.ct_cp_hpd_gpio, 1);
+	gpio_set_value(hdmi.ls_oe_gpio, 1);
+
+	/* wait 300us after CT_CP_HPD for the 5V power output to reach 90% */
+	udelay(300);
+
+	r = regulator_enable(hdmi.vdda_hdmi_dac_reg);
+	if (r)
+		goto err_vdac_enable;
+
 	r = hdmi_runtime_get();
 	if (r)
-		return r;
+		goto err_runtime_get;
 
-	dss_mgr_disable(dssdev->manager);
+	dss_mgr_disable(mgr);
 
-	p = &dssdev->panel.timings;
+	p = &hdmi.ip_data.cfg.timings;
 
-	DSSDBG("hdmi_power_on x_res= %d y_res = %d\n",
-		dssdev->panel.timings.x_res,
-		dssdev->panel.timings.y_res);
+	DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
 
-	timing = hdmi_get_timings();
-	if (timing == NULL) {
-		/* HDMI code 4 corresponds to 640 * 480 VGA */
-		hdmi.ip_data.cfg.cm.code = 4;
-		/* DVI mode 1 corresponds to HDMI 0 to DVI */
-		hdmi.ip_data.cfg.cm.mode = HDMI_DVI;
-		hdmi.ip_data.cfg = vesa_timings[0];
-	} else {
-		hdmi.ip_data.cfg = *timing;
-	}
 	phy = p->pixel_clock;
 
 	hdmi_compute_pll(dssdev, phy, &hdmi.ip_data.pll_data);
@@ -495,13 +537,13 @@ static int hdmi_power_on(struct omap_dss_device *dssdev)
 	r = hdmi.ip_data.ops->pll_enable(&hdmi.ip_data);
 	if (r) {
 		DSSDBG("Failed to lock PLL\n");
-		goto err;
+		goto err_pll_enable;
 	}
 
 	r = hdmi.ip_data.ops->phy_enable(&hdmi.ip_data);
 	if (r) {
 		DSSDBG("Failed to start PHY\n");
-		goto err;
+		goto err_phy_enable;
 	}
 
 	hdmi.ip_data.ops->video_configure(&hdmi.ip_data);
@@ -521,13 +563,13 @@ static int hdmi_power_on(struct omap_dss_device *dssdev)
 	dispc_enable_gamma_table(0);
 
 	/* tv size */
-	dss_mgr_set_timings(dssdev->manager, &dssdev->panel.timings);
+	dss_mgr_set_timings(mgr, p);
 
 	r = hdmi.ip_data.ops->video_enable(&hdmi.ip_data);
 	if (r)
 		goto err_vid_enable;
 
-	r = dss_mgr_enable(dssdev->manager);
+	r = dss_mgr_enable(mgr);
 	if (r)
 		goto err_mgr_enable;
 
@@ -537,20 +579,33 @@ err_mgr_enable:
 	hdmi.ip_data.ops->video_disable(&hdmi.ip_data);
 err_vid_enable:
 	hdmi.ip_data.ops->phy_disable(&hdmi.ip_data);
+err_phy_enable:
 	hdmi.ip_data.ops->pll_disable(&hdmi.ip_data);
-err:
+err_pll_enable:
 	hdmi_runtime_put();
+err_runtime_get:
+	regulator_disable(hdmi.vdda_hdmi_dac_reg);
+err_vdac_enable:
+	gpio_set_value(hdmi.ct_cp_hpd_gpio, 0);
+	gpio_set_value(hdmi.ls_oe_gpio, 0);
 	return -EIO;
 }
 
 static void hdmi_power_off(struct omap_dss_device *dssdev)
 {
-	dss_mgr_disable(dssdev->manager);
+	struct omap_overlay_manager *mgr = dssdev->output->manager;
+
+	dss_mgr_disable(mgr);
 
 	hdmi.ip_data.ops->video_disable(&hdmi.ip_data);
 	hdmi.ip_data.ops->phy_disable(&hdmi.ip_data);
 	hdmi.ip_data.ops->pll_disable(&hdmi.ip_data);
 	hdmi_runtime_put();
+
+	regulator_disable(hdmi.vdda_hdmi_dac_reg);
+
+	gpio_set_value(hdmi.ct_cp_hpd_gpio, 0);
+	gpio_set_value(hdmi.ls_oe_gpio, 0);
 }
 
 int omapdss_hdmi_display_check_timing(struct omap_dss_device *dssdev,
@@ -567,25 +622,22 @@ int omapdss_hdmi_display_check_timing(struct omap_dss_device *dssdev,
 
 }
 
-void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev)
+void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev,
+		struct omap_video_timings *timings)
 {
 	struct hdmi_cm cm;
+	const struct hdmi_config *t;
 
-	cm = hdmi_get_code(&dssdev->panel.timings);
-	hdmi.ip_data.cfg.cm.code = cm.code;
-	hdmi.ip_data.cfg.cm.mode = cm.mode;
+	mutex_lock(&hdmi.lock);
 
-	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
-		int r;
+	cm = hdmi_get_code(timings);
+	hdmi.ip_data.cfg.cm = cm;
 
-		hdmi_power_off(dssdev);
+	t = hdmi_get_timings();
+	if (t != NULL)
+		hdmi.ip_data.cfg = *t;
 
-		r = hdmi_power_on(dssdev);
-		if (r)
-			DSSERR("failed to power on device\n");
-	} else {
-		dss_mgr_set_timings(dssdev->manager, &dssdev->panel.timings);
-	}
+	mutex_unlock(&hdmi.lock);
 }
 
 static void hdmi_dump_regs(struct seq_file *s)
@@ -640,20 +692,20 @@ bool omapdss_hdmi_detect(void)
 
 int omapdss_hdmi_display_enable(struct omap_dss_device *dssdev)
 {
-	struct omap_dss_hdmi_data *priv = dssdev->data;
+	struct omap_dss_output *out = dssdev->output;
 	int r = 0;
 
 	DSSDBG("ENTER hdmi_display_enable\n");
 
 	mutex_lock(&hdmi.lock);
 
-	if (dssdev->manager == NULL) {
-		DSSERR("failed to enable display: no manager\n");
+	if (out == NULL || out->manager == NULL) {
+		DSSERR("failed to enable display: no output/manager\n");
 		r = -ENODEV;
 		goto err0;
 	}
 
-	hdmi.ip_data.hpd_gpio = priv->hpd_gpio;
+	hdmi.ip_data.hpd_gpio = hdmi.hpd_gpio;
 
 	r = omap_dss_start_device(dssdev);
 	if (r) {
@@ -661,26 +713,15 @@ int omapdss_hdmi_display_enable(struct omap_dss_device *dssdev)
 		goto err0;
 	}
 
-	if (dssdev->platform_enable) {
-		r = dssdev->platform_enable(dssdev);
-		if (r) {
-			DSSERR("failed to enable GPIO's\n");
-			goto err1;
-		}
-	}
-
 	r = hdmi_power_on(dssdev);
 	if (r) {
 		DSSERR("failed to power on device\n");
-		goto err2;
+		goto err1;
 	}
 
 	mutex_unlock(&hdmi.lock);
 	return 0;
 
-err2:
-	if (dssdev->platform_disable)
-		dssdev->platform_disable(dssdev);
 err1:
 	omap_dss_stop_device(dssdev);
 err0:
@@ -696,9 +737,6 @@ void omapdss_hdmi_display_disable(struct omap_dss_device *dssdev)
 
 	hdmi_power_off(dssdev);
 
-	if (dssdev->platform_disable)
-		dssdev->platform_disable(dssdev);
-
 	omap_dss_stop_device(dssdev);
 
 	mutex_unlock(&hdmi.lock);
@@ -869,10 +907,14 @@ int hdmi_audio_config(struct omap_dss_audio *audio)
 
 #endif
 
-static void __init hdmi_probe_pdata(struct platform_device *pdev)
+static struct omap_dss_device * __init hdmi_find_dssdev(struct platform_device *pdev)
 {
 	struct omap_dss_board_info *pdata = pdev->dev.platform_data;
-	int r, i;
+	const char *def_disp_name = dss_get_default_display_name();
+	struct omap_dss_device *def_dssdev;
+	int i;
+
+	def_dssdev = NULL;
 
 	for (i = 0; i < pdata->num_devices; ++i) {
 		struct omap_dss_device *dssdev = pdata->devices[i];
@@ -880,17 +922,76 @@ static void __init hdmi_probe_pdata(struct platform_device *pdev)
 		if (dssdev->type != OMAP_DISPLAY_TYPE_HDMI)
 			continue;
 
-		r = hdmi_init_display(dssdev);
-		if (r) {
-			DSSERR("device %s init failed: %d\n", dssdev->name, r);
-			continue;
+		if (def_dssdev == NULL)
+			def_dssdev = dssdev;
+
+		if (def_disp_name != NULL &&
+				strcmp(dssdev->name, def_disp_name) == 0) {
+			def_dssdev = dssdev;
+			break;
 		}
+	}
 
-		r = omap_dss_register_device(dssdev, &pdev->dev, i);
-		if (r)
-			DSSERR("device %s register failed: %d\n",
-					dssdev->name, r);
+	return def_dssdev;
+}
+
+static void __init hdmi_probe_pdata(struct platform_device *pdev)
+{
+	struct omap_dss_device *plat_dssdev;
+	struct omap_dss_device *dssdev;
+	struct omap_dss_hdmi_data *priv;
+	int r;
+
+	plat_dssdev = hdmi_find_dssdev(pdev);
+
+	if (!plat_dssdev)
+		return;
+
+	dssdev = dss_alloc_and_init_device(&pdev->dev);
+	if (!dssdev)
+		return;
+
+	dss_copy_device_pdata(dssdev, plat_dssdev);
+
+	priv = dssdev->data;
+
+	hdmi.ct_cp_hpd_gpio = priv->ct_cp_hpd_gpio;
+	hdmi.ls_oe_gpio = priv->ls_oe_gpio;
+	hdmi.hpd_gpio = priv->hpd_gpio;
+
+	dssdev->channel = OMAP_DSS_CHANNEL_DIGIT;
+
+	r = hdmi_init_display(dssdev);
+	if (r) {
+		DSSERR("device %s init failed: %d\n", dssdev->name, r);
+		dss_put_device(dssdev);
+		return;
 	}
+
+	r = dss_add_device(dssdev);
+	if (r) {
+		DSSERR("device %s register failed: %d\n", dssdev->name, r);
+		dss_put_device(dssdev);
+		return;
+	}
+}
+
+static void __init hdmi_init_output(struct platform_device *pdev)
+{
+	struct omap_dss_output *out = &hdmi.output;
+
+	out->pdev = pdev;
+	out->id = OMAP_DSS_OUTPUT_HDMI;
+	out->type = OMAP_DISPLAY_TYPE_HDMI;
+
+	dss_register_output(out);
+}
+
+static void __exit hdmi_uninit_output(struct platform_device *pdev)
+{
+	struct omap_dss_output *out = &hdmi.output;
+
+	dss_unregister_output(out);
 }
 
 /* HDMI HW IP initialisation */
@@ -929,23 +1030,37 @@ static int __init omapdss_hdmihw_probe(struct platform_device *pdev)
 	hdmi.ip_data.core_av_offset = HDMI_CORE_AV;
 	hdmi.ip_data.pll_offset = HDMI_PLLCTRL;
 	hdmi.ip_data.phy_offset = HDMI_PHY;
+
 	mutex_init(&hdmi.ip_data.lock);
 
 	hdmi_panel_init();
 
 	dss_debugfs_create_file("hdmi", hdmi_dump_regs);
 
+	hdmi_init_output(pdev);
+
 	hdmi_probe_pdata(pdev);
 
 	return 0;
 }
 
+static int __exit hdmi_remove_child(struct device *dev, void *data)
+{
+	struct omap_dss_device *dssdev = to_dss_device(dev);
+	hdmi_uninit_display(dssdev);
+	return 0;
+}
+
 static int __exit omapdss_hdmihw_remove(struct platform_device *pdev)
 {
-	omap_dss_unregister_child_devices(&pdev->dev);
+	device_for_each_child(&pdev->dev, NULL, hdmi_remove_child);
+
+	dss_unregister_child_devices(&pdev->dev);
 
 	hdmi_panel_exit();
 
+	hdmi_uninit_output(pdev);
+
 	pm_runtime_disable(&pdev->dev);
 
 	hdmi_put_clocks();