disable pwm7

hc

2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a

 kernel/drivers/gpu/drm/panel/panel-lvds.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0+
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 /*
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  * Generic LVDS panel driver
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  *
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@@ -5,14 +6,8 @@
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  * Copyright (C) 2016 Renesas Electronics Corporation
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  *
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  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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  */
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10
 
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-#include <linux/backlight.h>
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 #include <linux/gpio/consumer.h>
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 #include <linux/module.h>
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 #include <linux/of_platform.h>
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@@ -20,13 +15,12 @@
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 #include <linux/regulator/consumer.h>
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 #include <linux/slab.h>
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17
 
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-#include <drm/drmP.h>
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-#include <drm/drm_crtc.h>
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-#include <drm/drm_panel.h>
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-
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 #include <video/display_timing.h>
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 #include <video/of_display_timing.h>
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 #include <video/videomode.h>
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+
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+#include <drm/drm_crtc.h>
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+#include <drm/drm_panel.h>
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 struct panel_lvds {
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 	struct drm_panel panel;
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@@ -39,29 +33,17 @@
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 	unsigned int bus_format;
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 	bool data_mirror;
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35
 
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-	struct backlight_device *backlight;
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 	struct regulator *supply;
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 	struct gpio_desc *enable_gpio;
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 	struct gpio_desc *reset_gpio;
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+
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+	enum drm_panel_orientation orientation;
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 };
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 static inline struct panel_lvds *to_panel_lvds(struct drm_panel *panel)
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 {
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 	return container_of(panel, struct panel_lvds, panel);
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-}
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-
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-static int panel_lvds_disable(struct drm_panel *panel)
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-{
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-	struct panel_lvds *lvds = to_panel_lvds(panel);
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-
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-	if (lvds->backlight) {
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-		lvds->backlight->props.power = FB_BLANK_POWERDOWN;
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-		lvds->backlight->props.state |= BL_CORE_FBBLANK;
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-		backlight_update_status(lvds->backlight);
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-	}
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-
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-	return 0;
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 }
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 static int panel_lvds_unprepare(struct drm_panel *panel)
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@@ -98,26 +80,13 @@
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 	return 0;
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 }
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-static int panel_lvds_enable(struct drm_panel *panel)
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+static int panel_lvds_get_modes(struct drm_panel *panel,
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+				struct drm_connector *connector)
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 {
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 	struct panel_lvds *lvds = to_panel_lvds(panel);
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-
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-	if (lvds->backlight) {
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-		lvds->backlight->props.state &= ~BL_CORE_FBBLANK;
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-		lvds->backlight->props.power = FB_BLANK_UNBLANK;
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-		backlight_update_status(lvds->backlight);
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-	}
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-
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-	return 0;
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-}
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-
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-static int panel_lvds_get_modes(struct drm_panel *panel)
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-{
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-	struct panel_lvds *lvds = to_panel_lvds(panel);
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-	struct drm_connector *connector = lvds->panel.connector;
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 	struct drm_display_mode *mode;
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-	mode = drm_mode_create(lvds->panel.drm);
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+	mode = drm_mode_create(connector->dev);
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 	if (!mode)
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 		return 0;
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@@ -132,15 +101,14 @@
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 	connector->display_info.bus_flags = lvds->data_mirror
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 					  ? DRM_BUS_FLAG_DATA_LSB_TO_MSB
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 					  : DRM_BUS_FLAG_DATA_MSB_TO_LSB;
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+	drm_connector_set_panel_orientation(connector, lvds->orientation);
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 	return 1;
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 }
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 static const struct drm_panel_funcs panel_lvds_funcs = {
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-	.disable = panel_lvds_disable,
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 	.unprepare = panel_lvds_unprepare,
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 	.prepare = panel_lvds_prepare,
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-	.enable = panel_lvds_enable,
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 	.get_modes = panel_lvds_get_modes,
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 };
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@@ -151,9 +119,18 @@
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 	const char *mapping;
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 	int ret;
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-	ret = of_get_display_timing(np, "panel-timing", &timing);
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-	if (ret < 0)
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+	ret = of_drm_get_panel_orientation(np, &lvds->orientation);
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+	if (ret < 0) {
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+		dev_err(lvds->dev, "%pOF: failed to get orientation %d\n", np, ret);
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 		return ret;
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+	}
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+
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+	ret = of_get_display_timing(np, "panel-timing", &timing);
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+	if (ret < 0) {
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+		dev_err(lvds->dev, "%pOF: problems parsing panel-timing (%d)\n",
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+			np, ret);
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+		return ret;
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+	}
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 	videomode_from_timing(&timing, &lvds->video_mode);
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@@ -244,10 +221,6 @@
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 		return ret;
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 	}
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-	lvds->backlight = devm_of_find_backlight(lvds->dev);
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-	if (IS_ERR(lvds->backlight))
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-		return PTR_ERR(lvds->backlight);
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-
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 	/*
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 	 * TODO: Handle all power supplies specified in the DT node in a generic
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 	 * way for panels that don't care about power supply ordering. LVDS
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@@ -256,13 +229,14 @@
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 	 */
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 	/* Register the panel. */
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-	drm_panel_init(&lvds->panel);
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-	lvds->panel.dev = lvds->dev;
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-	lvds->panel.funcs = &panel_lvds_funcs;
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+	drm_panel_init(&lvds->panel, lvds->dev, &panel_lvds_funcs,
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+		       DRM_MODE_CONNECTOR_LVDS);
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-	ret = drm_panel_add(&lvds->panel);
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-	if (ret < 0)
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+	ret = drm_panel_of_backlight(&lvds->panel);
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+	if (ret)
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 		return ret;
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+
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+	drm_panel_add(&lvds->panel);
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 	dev_set_drvdata(lvds->dev, lvds);
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 	return 0;
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@@ -274,7 +248,7 @@
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 	drm_panel_remove(&lvds->panel);
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-	panel_lvds_disable(&lvds->panel);
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+	drm_panel_disable(&lvds->panel);
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 	return 0;
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 }