Date:   Thu, 30 Nov 2017 14:14:40 +0800
From:   Lin Huang <hl@...k-chips.com>
To:     thierry.reding@...il.com, zyw@...k-chips.com, seanpaul@...omium.org
Cc:     nickey.yang@...k-chips.com, briannorris@...omium.org,
        airlied@...ux.ie, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Lin Huang <hl@...k-chips.com>
Subject: [RESENT PATCH] drm/panel: support Innolux P097PFG panel

Support Innolux P097PFG 9.7" 1536x2048 TFT LCD panel,
it refactor Innolux P079ZCA panel driver, let it support
multi panel, and add support P097PFG panel in this driver.

Signed-off-by: Lin Huang <hl@...k-chips.com>

---
 drivers/gpu/drm/panel/panel-innolux-p079zca.c | 178 ++++++++++++++++++++------
 1 file changed, 136 insertions(+), 42 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
index 6ba9344..a40798f 100644
--- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
+++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
@@ -20,12 +20,32 @@
 
 #include <video/mipi_display.h>
 
+struct panel_desc {
+	const struct drm_display_mode *modes;
+	unsigned int bpc;
+	struct {
+		unsigned int width;
+		unsigned int height;
+	} size;
+};
+
+struct panel_desc_dsi {
+	struct panel_desc desc;
+
+	unsigned long flags;
+	enum mipi_dsi_pixel_format format;
+	unsigned int lanes;
+};
+
 struct innolux_panel {
 	struct drm_panel base;
 	struct mipi_dsi_device *link;
+	const struct panel_desc_dsi *dsi_desc;
 
 	struct backlight_device *backlight;
-	struct regulator *supply;
+	struct regulator *vddi;
+	struct regulator *avdd;
+	struct regulator *avee;
 	struct gpio_desc *enable_gpio;
 
 	bool prepared;
@@ -78,9 +98,9 @@ static int innolux_panel_unprepare(struct drm_panel *panel)
 	/* T8: 80ms - 1000ms */
 	msleep(80);
 
-	err = regulator_disable(innolux->supply);
-	if (err < 0)
-		return err;
+	regulator_disable(innolux->avee);
+	regulator_disable(innolux->avdd);
+	regulator_disable(innolux->vddi);
 
 	innolux->prepared = false;
 
@@ -97,10 +117,18 @@ static int innolux_panel_prepare(struct drm_panel *panel)
 
 	gpiod_set_value_cansleep(innolux->enable_gpio, 0);
 
-	err = regulator_enable(innolux->supply);
+	err = regulator_enable(innolux->vddi);
 	if (err < 0)
 		return err;
 
+	err = regulator_enable(innolux->avdd);
+	if (err < 0)
+		goto disable_vddi;
+
+	err = regulator_enable(innolux->avee);
+	if (err < 0)
+		goto disable_avdd;
+
 	/* T2: 15ms - 1000ms */
 	usleep_range(15000, 16000);
 
@@ -134,12 +162,13 @@ static int innolux_panel_prepare(struct drm_panel *panel)
 	return 0;
 
 poweroff:
-	regulator_err = regulator_disable(innolux->supply);
-	if (regulator_err)
-		DRM_DEV_ERROR(panel->dev, "failed to disable regulator: %d\n",
-			      regulator_err);
-
 	gpiod_set_value_cansleep(innolux->enable_gpio, 0);
+	regulator_disable(innolux->avee);
+disable_avdd:
+	regulator_disable(innolux->avdd);
+disable_vddi:
+	regulator_disable(innolux->vddi);
+
 	return err;
 }
 
@@ -164,7 +193,7 @@ static int innolux_panel_enable(struct drm_panel *panel)
 	return 0;
 }
 
-static const struct drm_display_mode default_mode = {
+static const struct drm_display_mode innolux_p079zca_mode = {
 	.clock = 56900,
 	.hdisplay = 768,
 	.hsync_start = 768 + 40,
@@ -177,15 +206,59 @@ static const struct drm_display_mode default_mode = {
 	.vrefresh = 60,
 };
 
+static const struct panel_desc_dsi innolux_p079zca_panel_desc = {
+	.desc = {
+		.modes = &innolux_p079zca_mode,
+		.bpc = 8,
+		.size = {
+			.width = 120,
+			.height = 160,
+		},
+	},
+	.flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
+		 MIPI_DSI_MODE_LPM,
+	.format = MIPI_DSI_FMT_RGB888,
+	.lanes = 4,
+};
+
+static const struct drm_display_mode innolux_p097pfg_mode = {
+	.clock = 220000,
+	.hdisplay = 1536,
+	.hsync_start = 1536 + 100,
+	.hsync_end = 1536 + 100 + 24,
+	.htotal = 1536 + 100 + 24 + 100,
+	.vdisplay = 2048,
+	.vsync_start = 2048 + 18,
+	.vsync_end = 2048 + 18 + 2,
+	.vtotal = 2048 + 18 + 2 + 18,
+	.vrefresh = 60,
+};
+
+static const struct panel_desc_dsi innolux_p097pfg_panel_desc = {
+	.desc = {
+		.modes = &innolux_p097pfg_mode,
+		.bpc = 8,
+		.size = {
+			.width = 147,
+			.height = 196,
+		},
+	},
+	.flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
+		 MIPI_DSI_MODE_LPM,
+	.format = MIPI_DSI_FMT_RGB888,
+	.lanes = 8,
+};
+
 static int innolux_panel_get_modes(struct drm_panel *panel)
 {
 	struct drm_display_mode *mode;
+	struct innolux_panel *innolux = to_innolux_panel(panel);
+	const struct drm_display_mode *m = innolux->dsi_desc->desc.modes;
 
-	mode = drm_mode_duplicate(panel->drm, &default_mode);
+	mode = drm_mode_duplicate(panel->drm, m);
 	if (!mode) {
 		DRM_DEV_ERROR(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
-			      default_mode.hdisplay, default_mode.vdisplay,
-			      default_mode.vrefresh);
+			      m->hdisplay, m->vdisplay, m->vrefresh);
 		return -ENOMEM;
 	}
 
@@ -193,9 +266,11 @@ static int innolux_panel_get_modes(struct drm_panel *panel)
 
 	drm_mode_probed_add(panel->connector, mode);
 
-	panel->connector->display_info.width_mm = 120;
-	panel->connector->display_info.height_mm = 160;
-	panel->connector->display_info.bpc = 8;
+	panel->connector->display_info.width_mm =
+			innolux->dsi_desc->desc.size.width;
+	panel->connector->display_info.height_mm =
+			innolux->dsi_desc->desc.size.height;
+	panel->connector->display_info.bpc = innolux->dsi_desc->desc.bpc;
 
 	return 1;
 }
@@ -209,20 +284,39 @@ static const struct drm_panel_funcs innolux_panel_funcs = {
 };
 
 static const struct of_device_id innolux_of_match[] = {
-	{ .compatible = "innolux,p079zca", },
-	{ }
+	{ .compatible = "innolux,p079zca",
+	  .data = &innolux_p079zca_panel_desc
+	},
+	{ .compatible = "innolux,p097pfg",
+	  .data = &innolux_p097pfg_panel_desc
+	}
 };
 MODULE_DEVICE_TABLE(of, innolux_of_match);
 
-static int innolux_panel_add(struct innolux_panel *innolux)
+static int innolux_panel_add(struct mipi_dsi_device *dsi,
+			     const struct panel_desc_dsi *desc)
 {
-	struct device *dev = &innolux->link->dev;
+	struct innolux_panel *innolux;
+	struct device *dev = &dsi->dev;
 	struct device_node *np;
 	int err;
 
-	innolux->supply = devm_regulator_get(dev, "power");
-	if (IS_ERR(innolux->supply))
-		return PTR_ERR(innolux->supply);
+	innolux = devm_kzalloc(dev, sizeof(*innolux), GFP_KERNEL);
+	if (!innolux)
+		return -ENOMEM;
+
+	innolux->dsi_desc = desc;
+	innolux->vddi = devm_regulator_get_optional(dev, "power");
+	if (IS_ERR(innolux->vddi))
+		return PTR_ERR(innolux->vddi);
+
+	innolux->avdd = devm_regulator_get(dev, "ppvarp");
+	if (IS_ERR(innolux->avdd))
+		return PTR_ERR(innolux->avdd);
+
+	innolux->avee = devm_regulator_get(dev, "ppvarn");
+	if (IS_ERR(innolux->avee))
+		return PTR_ERR(innolux->avee);
 
 	innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",
 						       GPIOD_OUT_HIGH);
@@ -243,14 +337,16 @@ static int innolux_panel_add(struct innolux_panel *innolux)
 
 	drm_panel_init(&innolux->base);
 	innolux->base.funcs = &innolux_panel_funcs;
-	innolux->base.dev = &innolux->link->dev;
+	innolux->base.dev = dev;
 
 	err = drm_panel_add(&innolux->base);
 	if (err < 0)
 		goto put_backlight;
 
-	return 0;
+	dev_set_drvdata(dev, innolux);
+	innolux->link = dsi;
 
+	return 0;
 put_backlight:
 	put_device(&innolux->backlight->dev);
 
@@ -267,28 +363,25 @@ static void innolux_panel_del(struct innolux_panel *innolux)
 
 static int innolux_panel_probe(struct mipi_dsi_device *dsi)
 {
-	struct innolux_panel *innolux;
-	int err;
-
-	dsi->lanes = 4;
-	dsi->format = MIPI_DSI_FMT_RGB888;
-	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
-			  MIPI_DSI_MODE_LPM;
 
-	innolux = devm_kzalloc(&dsi->dev, sizeof(*innolux), GFP_KERNEL);
-	if (!innolux)
-		return -ENOMEM;
+	const struct panel_desc_dsi *dsi_desc;
+	const struct of_device_id *id;
+	int err;
 
-	mipi_dsi_set_drvdata(dsi, innolux);
+	id = of_match_node(innolux_of_match, dsi->dev.of_node);
+	if (!id)
+		return -ENODEV;
 
-	innolux->link = dsi;
+	dsi_desc = id->data;
+	dsi->mode_flags = dsi_desc->flags;
+	dsi->format = dsi_desc->format;
+	dsi->lanes = dsi_desc->lanes;
 
-	err = innolux_panel_add(innolux);
+	err = innolux_panel_add(dsi, dsi_desc);
 	if (err < 0)
 		return err;
 
-	err = mipi_dsi_attach(dsi);
-	return err;
+	return mipi_dsi_attach(dsi);
 }
 
 static int innolux_panel_remove(struct mipi_dsi_device *dsi)
@@ -326,7 +419,7 @@ static void innolux_panel_shutdown(struct mipi_dsi_device *dsi)
 
 static struct mipi_dsi_driver innolux_panel_driver = {
 	.driver = {
-		.name = "panel-innolux-p079zca",
+		.name = "panel-innolux-dsi",
 		.of_match_table = innolux_of_match,
 	},
 	.probe = innolux_panel_probe,
@@ -336,5 +429,6 @@ static struct mipi_dsi_driver innolux_panel_driver = {
 module_mipi_dsi_driver(innolux_panel_driver);
 
 MODULE_AUTHOR("Chris Zhong <zyw@...k-chips.com>");
+MODULE_AUTHOR("Lin Huang <hl@...k-chips.com>");
 MODULE_DESCRIPTION("Innolux P079ZCA panel driver");
 MODULE_LICENSE("GPL v2");
-- 
2.7.4

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