modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/drivers/gpu/drm/tilcdc/tilcdc_panel.c
..
..
@@ -1,28 +1,22 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2012 Texas Instruments
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  * Author: Rob Clark <robdclark@gmail.com>
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License version 2 as published by
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- * the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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- * more details.
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- *
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- * You should have received a copy of the GNU General Public License along with
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- * this program.  If not, see <http://www.gnu.org/licenses/>.
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  */
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6
 
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-#include <linux/pinctrl/pinmux.h>
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-#include <linux/pinctrl/consumer.h>
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-#include <linux/backlight.h>
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 #include <linux/gpio/consumer.h>
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+#include <linux/pinctrl/consumer.h>
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+#include <linux/platform_device.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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-#include <drm/drm_atomic_helper.h>
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+
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+#include <drm/drm_atomic_state_helper.h>
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+#include <drm/drm_connector.h>
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+#include <drm/drm_modeset_helper_vtables.h>
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+#include <drm/drm_probe_helper.h>
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+#include <drm/drm_simple_kms_helper.h>
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20
 
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 #include "tilcdc_drv.h"
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 #include "tilcdc_panel.h"
..
..
@@ -81,10 +75,6 @@
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 	/* nothing needed */
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 }
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-static const struct drm_encoder_funcs panel_encoder_funcs = {
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-		.destroy        = drm_encoder_cleanup,
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-};
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-
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 static const struct drm_encoder_helper_funcs panel_encoder_helper_funcs = {
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 		.dpms           = panel_encoder_dpms,
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 		.prepare        = panel_encoder_prepare,
..
..
@@ -109,8 +99,7 @@
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 	encoder = &panel_encoder->base;
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 	encoder->possible_crtcs = 1;
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101
 
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-	ret = drm_encoder_init(dev, encoder, &panel_encoder_funcs,
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-			DRM_MODE_ENCODER_LVDS, NULL);
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+	ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_LVDS);
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 	if (ret < 0)
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 		goto fail;
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105
 
..
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@@ -174,14 +163,6 @@
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 	return i;
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 }
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165
 
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-static int panel_connector_mode_valid(struct drm_connector *connector,
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-		  struct drm_display_mode *mode)
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-{
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-	struct tilcdc_drm_private *priv = connector->dev->dev_private;
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-	/* our only constraints are what the crtc can generate: */
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-	return tilcdc_crtc_mode_valid(priv->crtc, mode);
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-}
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-
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166
 static struct drm_encoder *panel_connector_best_encoder(
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 		struct drm_connector *connector)
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 {
..
..
@@ -199,7 +180,6 @@
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180
 
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 static const struct drm_connector_helper_funcs panel_connector_helper_funcs = {
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 	.get_modes          = panel_connector_get_modes,
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-	.mode_valid         = panel_connector_mode_valid,
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 	.best_encoder       = panel_connector_best_encoder,
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184
 };
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185
 
..
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@@ -323,7 +303,8 @@
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303
 
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 static int panel_probe(struct platform_device *pdev)
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 {
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-	struct device_node *bl_node, *node = pdev->dev.of_node;
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+	struct device_node *node = pdev->dev.of_node;
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+	struct backlight_device *backlight;
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 	struct panel_module *panel_mod;
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 	struct tilcdc_module *mod;
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 	struct pinctrl *pinctrl;
..
..
@@ -339,16 +320,10 @@
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 	if (!panel_mod)
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 		return -ENOMEM;
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-	bl_node = of_parse_phandle(node, "backlight", 0);
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-	if (bl_node) {
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-		panel_mod->backlight = of_find_backlight_by_node(bl_node);
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-		of_node_put(bl_node);
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-
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-		if (!panel_mod->backlight)
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-			return -EPROBE_DEFER;
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-
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-		dev_info(&pdev->dev, "found backlight\n");
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-	}
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+	backlight = devm_of_find_backlight(&pdev->dev);
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+	if (IS_ERR(backlight))
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+		return PTR_ERR(backlight);
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+	panel_mod->backlight = backlight;
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327
 
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 	panel_mod->enable_gpio = devm_gpiod_get_optional(&pdev->dev, "enable",
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 							 GPIOD_OUT_LOW);
..
..
@@ -420,7 +395,7 @@
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 		{ },
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 };
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-struct platform_driver panel_driver = {
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+static struct platform_driver panel_driver = {
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 	.probe = panel_probe,
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 	.remove = panel_remove,
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 	.driver = {