1 files changed, 86 insertions, 125 deletions

diff --git a/drivers/gpu/drm/panel/panel-samsung-sofef00.c b/drivers/gpu/drm/panel/panel-samsung-sofef00.c
index cbf9607dd576..e00a497a7c96 100644
--- a/drivers/gpu/drm/panel/panel-samsung-sofef00.c
+++ b/drivers/gpu/drm/panel/panel-samsung-sofef00.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2020 Caleb Connolly <caleb@connolly.tech>
+/* Copyright (c) 2020 Casey Connolly <casey.connolly@linaro.org>
  * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
  * Copyright (c) 2020, The Linux Foundation. All rights reserved.
  */
@@ -16,14 +16,19 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
+#include <drm/drm_probe_helper.h>
 
 struct sofef00_panel {
 	struct drm_panel panel;
 	struct mipi_dsi_device *dsi;
-	struct regulator *supply;
+	struct regulator_bulk_data *supplies;
 	struct gpio_desc *reset_gpio;
-	const struct drm_display_mode *mode;
-	bool prepared;
+};
+
+static const struct regulator_bulk_data sofef00_supplies[] = {
+	{ .supply = "vddio" },
+	{ .supply = "vci" },
+	{ .supply = "poc" },
 };
 
 static inline
@@ -32,6 +37,11 @@ struct sofef00_panel *to_sofef00_panel(struct drm_panel *panel)
 	return container_of(panel, struct sofef00_panel, panel);
 }
 
+#define sofef00_test_key_on_lvl2(ctx) \
+	mipi_dsi_dcs_write_seq_multi(ctx, 0xf0, 0x5a, 0x5a)
+#define sofef00_test_key_off_lvl2(ctx) \
+	mipi_dsi_dcs_write_seq_multi(ctx, 0xf0, 0xa5, 0xa5)
+
 static void sofef00_panel_reset(struct sofef00_panel *ctx)
 {
 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
@@ -45,164 +55,119 @@ static void sofef00_panel_reset(struct sofef00_panel *ctx)
 static int sofef00_panel_on(struct sofef00_panel *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
 
-	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
-		return ret;
-	}
-	usleep_range(10000, 11000);
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_usleep_range(&dsi_ctx, 10000, 11000);
 
-	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
+	sofef00_test_key_on_lvl2(&dsi_ctx);
+	mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	sofef00_test_key_off_lvl2(&dsi_ctx);
 
-	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set tear on: %d\n", ret);
-		return ret;
-	}
+	sofef00_test_key_on_lvl2(&dsi_ctx);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb0, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb6, 0x12);
+	sofef00_test_key_off_lvl2(&dsi_ctx);
 
-	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
-	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
-	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x07);
-	mipi_dsi_dcs_write_seq(dsi, 0xb6, 0x12);
-	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
 
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display on: %d\n", ret);
-		return ret;
-	}
+	return dsi_ctx.accum_err;
+}
 
-	return 0;
+static int sofef00_enable(struct drm_panel *panel)
+{
+	struct sofef00_panel *ctx = to_sofef00_panel(panel);
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
+
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+
+	return dsi_ctx.accum_err;
 }
 
 static int sofef00_panel_off(struct sofef00_panel *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
-
-	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
-	ret = mipi_dsi_dcs_set_display_off(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display off: %d\n", ret);
-		return ret;
-	}
-	msleep(40);
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 40);
 
-	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
-		return ret;
-	}
-	msleep(160);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 160);
 
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
 static int sofef00_panel_prepare(struct drm_panel *panel)
 {
 	struct sofef00_panel *ctx = to_sofef00_panel(panel);
-	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
-	ret = regulator_enable(ctx->supply);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enable regulator: %d\n", ret);
+	ret = regulator_bulk_enable(ARRAY_SIZE(sofef00_supplies), ctx->supplies);
+	if (ret < 0)
 		return ret;
-	}
 
 	sofef00_panel_reset(ctx);
 
 	ret = sofef00_panel_on(ctx);
 	if (ret < 0) {
-		dev_err(dev, "Failed to initialize panel: %d\n", ret);
 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+		regulator_bulk_disable(ARRAY_SIZE(sofef00_supplies), ctx->supplies);
 		return ret;
 	}
 
-	ctx->prepared = true;
 	return 0;
 }
 
-static int sofef00_panel_unprepare(struct drm_panel *panel)
+static int sofef00_disable(struct drm_panel *panel)
 {
 	struct sofef00_panel *ctx = to_sofef00_panel(panel);
-	struct device *dev = &ctx->dsi->dev;
-	int ret;
 
-	if (!ctx->prepared)
-		return 0;
+	sofef00_panel_off(ctx);
 
-	ret = sofef00_panel_off(ctx);
-	if (ret < 0)
-		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+	return 0;
+}
+
+static int sofef00_panel_unprepare(struct drm_panel *panel)
+{
+	struct sofef00_panel *ctx = to_sofef00_panel(panel);
 
-	regulator_disable(ctx->supply);
+	regulator_bulk_disable(ARRAY_SIZE(sofef00_supplies), ctx->supplies);
 
-	ctx->prepared = false;
 	return 0;
 }
 
-static const struct drm_display_mode enchilada_panel_mode = {
+static const struct drm_display_mode ams628nw01_panel_mode = {
 	.clock = (1080 + 112 + 16 + 36) * (2280 + 36 + 8 + 12) * 60 / 1000,
+
 	.hdisplay = 1080,
 	.hsync_start = 1080 + 112,
 	.hsync_end = 1080 + 112 + 16,
 	.htotal = 1080 + 112 + 16 + 36,
+
 	.vdisplay = 2280,
 	.vsync_start = 2280 + 36,
 	.vsync_end = 2280 + 36 + 8,
 	.vtotal = 2280 + 36 + 8 + 12,
-	.width_mm = 68,
-	.height_mm = 145,
-};
 
-static const struct drm_display_mode fajita_panel_mode = {
-	.clock = (1080 + 72 + 16 + 36) * (2340 + 32 + 4 + 18) * 60 / 1000,
-	.hdisplay = 1080,
-	.hsync_start = 1080 + 72,
-	.hsync_end = 1080 + 72 + 16,
-	.htotal = 1080 + 72 + 16 + 36,
-	.vdisplay = 2340,
-	.vsync_start = 2340 + 32,
-	.vsync_end = 2340 + 32 + 4,
-	.vtotal = 2340 + 32 + 4 + 18,
 	.width_mm = 68,
 	.height_mm = 145,
+
+	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
 };
 
 static int sofef00_panel_get_modes(struct drm_panel *panel, struct drm_connector *connector)
 {
-	struct drm_display_mode *mode;
-	struct sofef00_panel *ctx = to_sofef00_panel(panel);
-
-	mode = drm_mode_duplicate(connector->dev, ctx->mode);
-	if (!mode)
-		return -ENOMEM;
-
-	drm_mode_set_name(mode);
-
-	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
-	connector->display_info.width_mm = mode->width_mm;
-	connector->display_info.height_mm = mode->height_mm;
-	drm_mode_probed_add(connector, mode);
-
-	return 1;
+	return drm_connector_helper_get_modes_fixed(connector, &ams628nw01_panel_mode);
 }
 
 static const struct drm_panel_funcs sofef00_panel_panel_funcs = {
 	.prepare = sofef00_panel_prepare,
+	.enable = sofef00_enable,
+	.disable = sofef00_disable,
 	.unprepare = sofef00_panel_unprepare,
 	.get_modes = sofef00_panel_get_modes,
 };
@@ -213,10 +178,14 @@ static int sofef00_panel_bl_update_status(struct backlight_device *bl)
 	int err;
 	u16 brightness = (u16)backlight_get_brightness(bl);
 
+	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
 	err = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
 	if (err < 0)
 		return err;
 
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
 	return 0;
 }
 
@@ -230,7 +199,7 @@ sofef00_create_backlight(struct mipi_dsi_device *dsi)
 	struct device *dev = &dsi->dev;
 	const struct backlight_properties props = {
 		.type = BACKLIGHT_PLATFORM,
-		.brightness = 1023,
+		.brightness = 512,
 		.max_brightness = 1023,
 	};
 
@@ -244,21 +213,18 @@ static int sofef00_panel_probe(struct mipi_dsi_device *dsi)
 	struct sofef00_panel *ctx;
 	int ret;
 
-	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
-	if (!ctx)
-		return -ENOMEM;
-
-	ctx->mode = of_device_get_match_data(dev);
+	ctx = devm_drm_panel_alloc(dev, struct sofef00_panel, panel,
+				   &sofef00_panel_panel_funcs,
+				   DRM_MODE_CONNECTOR_DSI);
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
-	if (!ctx->mode) {
-		dev_err(dev, "Missing device mode\n");
-		return -ENODEV;
-	}
-
-	ctx->supply = devm_regulator_get(dev, "vddio");
-	if (IS_ERR(ctx->supply))
-		return dev_err_probe(dev, PTR_ERR(ctx->supply),
-				     "Failed to get vddio regulator\n");
+	ret = devm_regulator_bulk_get_const(dev,
+					    ARRAY_SIZE(sofef00_supplies),
+					    sofef00_supplies,
+					    &ctx->supplies);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get regulators\n");
 
 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
 	if (IS_ERR(ctx->reset_gpio))
@@ -270,9 +236,10 @@ static int sofef00_panel_probe(struct mipi_dsi_device *dsi)
 
 	dsi->lanes = 4;
 	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
+			  MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
 
-	drm_panel_init(&ctx->panel, dev, &sofef00_panel_panel_funcs,
-		       DRM_MODE_CONNECTOR_DSI);
+	ctx->panel.prepare_prev_first = true;
 
 	ctx->panel.backlight = sofef00_create_backlight(dsi);
 	if (IS_ERR(ctx->panel.backlight))
@@ -304,14 +271,8 @@ static void sofef00_panel_remove(struct mipi_dsi_device *dsi)
 }
 
 static const struct of_device_id sofef00_panel_of_match[] = {
-	{ // OnePlus 6 / enchilada
-		.compatible = "samsung,sofef00",
-		.data = &enchilada_panel_mode,
-	},
-	{ // OnePlus 6T / fajita
-		.compatible = "samsung,s6e3fc2x01",
-		.data = &fajita_panel_mode,
-	},
+	{ .compatible = "samsung,sofef00" }, /* legacy */
+	{ .compatible = "samsung,sofef00-ams628nw01" },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, sofef00_panel_of_match);
@@ -320,13 +281,13 @@ static struct mipi_dsi_driver sofef00_panel_driver = {
 	.probe = sofef00_panel_probe,
 	.remove = sofef00_panel_remove,
 	.driver = {
-		.name = "panel-oneplus6",
+		.name = "panel-samsung-sofef00",
 		.of_match_table = sofef00_panel_of_match,
 	},
 };
 
 module_mipi_dsi_driver(sofef00_panel_driver);
 
-MODULE_AUTHOR("Caleb Connolly <caleb@connolly.tech>");
-MODULE_DESCRIPTION("DRM driver for Samsung AMOLED DSI panels found in OnePlus 6/6T phones");
+MODULE_AUTHOR("Casey Connolly <casey.connolly@linaro.org>");
+MODULE_DESCRIPTION("DRM driver for Samsung SOFEF00 DDIC");
 MODULE_LICENSE("GPL v2");