linux-kernel - [PATCH v6 1/5] drm/panel: boe-th101mb31ig002 : Make it compatible with other panel.

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Message-Id: <20240709134754.28013-2-lvzhaoxiong@huaqin.corp-partner.google.com>
Date: Tue,  9 Jul 2024 21:47:50 +0800
From: Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>
To: neil.armstrong@...aro.org,
	robh@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
	airlied@...il.com,
	mripard@...nel.org,
	dianders@...gle.com,
	hsinyi@...gle.com,
	awarnecke002@...mail.com,
	quic_jesszhan@...cinc.com,
	dmitry.baryshkov@...aro.org
Cc: dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>
Subject: [PATCH v6 1/5] drm/panel: boe-th101mb31ig002 : Make it compatible with other panel.

This driver currently only applies to one panel. Modify it to be
compatible with other panels.

Signed-off-by: Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>
---
Changes between V6 and V5:
-  1. Corrected the use of "->init" in struct panel_desc, 
-  2. Modify indentation in "boe_th101mb31ig002_of_match[]"
v5: https://lore.kernel.org/all/20240704072958.27876-2-lvzhaoxiong@huaqin.corp-partner.google.com/
---
 .../drm/panel/panel-boe-th101mb31ig002-28a.c  | 41 +++++++++++++++----
 1 file changed, 34 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-boe-th101mb31ig002-28a.c b/drivers/gpu/drm/panel/panel-boe-th101mb31ig002-28a.c
index 763e9f8342d3..8f03920e3503 100644
--- a/drivers/gpu/drm/panel/panel-boe-th101mb31ig002-28a.c
+++ b/drivers/gpu/drm/panel/panel-boe-th101mb31ig002-28a.c
@@ -17,11 +17,21 @@
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
 
+struct panel_desc {
+	const struct drm_display_mode *modes;
+	unsigned long mode_flags;
+	enum mipi_dsi_pixel_format format;
+	int (*init)(struct drm_panel *panel);
+	unsigned int lanes;
+};
+
 struct boe_th101mb31ig002 {
 	struct drm_panel panel;
 
 	struct mipi_dsi_device *dsi;
 
+	const struct panel_desc *desc;
+
 	struct regulator *power;
 	struct gpio_desc *enable;
 	struct gpio_desc *reset;
@@ -161,7 +171,10 @@ static int boe_th101mb31ig002_prepare(struct drm_panel *panel)
 	gpiod_set_value_cansleep(ctx->enable, 1);
 	msleep(50);
 	boe_th101mb31ig002_reset(ctx);
-	boe_th101mb31ig002_enable(panel);
+
+	ret = ctx->desc->init(panel);
+	if (ret)
+		return ret;
 
 	return 0;
 }
@@ -181,6 +194,16 @@ static const struct drm_display_mode boe_th101mb31ig002_default_mode = {
 	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
 };
 
+static const struct panel_desc boe_th101mb31ig002_desc = {
+	.modes = &boe_th101mb31ig002_default_mode,
+	.lanes = 4,
+	.format = MIPI_DSI_FMT_RGB888,
+	.mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
+			  MIPI_DSI_MODE_NO_EOT_PACKET |
+			  MIPI_DSI_MODE_LPM,
+	.init = boe_th101mb31ig002_enable,
+};
+
 static int boe_th101mb31ig002_get_modes(struct drm_panel *panel,
 					struct drm_connector *connector)
 {
@@ -237,6 +260,7 @@ static const struct drm_panel_funcs boe_th101mb31ig002_funcs = {
 static int boe_th101mb31ig002_dsi_probe(struct mipi_dsi_device *dsi)
 {
 	struct boe_th101mb31ig002 *ctx;
+	const struct panel_desc *desc;
 	int ret;
 
 	ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
@@ -246,11 +270,11 @@ static int boe_th101mb31ig002_dsi_probe(struct mipi_dsi_device *dsi)
 	mipi_dsi_set_drvdata(dsi, ctx);
 	ctx->dsi = dsi;
 
-	dsi->lanes = 4;
-	dsi->format = MIPI_DSI_FMT_RGB888;
-	dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
-			  MIPI_DSI_MODE_NO_EOT_PACKET |
-			  MIPI_DSI_MODE_LPM;
+	desc = of_device_get_match_data(&dsi->dev);
+	dsi->lanes = desc->lanes;
+	dsi->format = desc->format;
+	dsi->mode_flags = desc->mode_flags;
+	ctx->desc = desc;
 
 	ctx->power = devm_regulator_get(&dsi->dev, "power");
 	if (IS_ERR(ctx->power))
@@ -302,7 +326,10 @@ static void boe_th101mb31ig002_dsi_remove(struct mipi_dsi_device *dsi)
 }
 
 static const struct of_device_id boe_th101mb31ig002_of_match[] = {
-	{ .compatible = "boe,th101mb31ig002-28a", },
+	{
+		.compatible = "boe,th101mb31ig002-28a",
+		.data = &boe_th101mb31ig002_desc
+	},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, boe_th101mb31ig002_of_match);
-- 
2.17.1