disable pwm7

hc

2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a

 kernel/drivers/video/backlight/sky81452-backlight.c
..
..
@@ -1,33 +1,20 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * sky81452-backlight.c	SKY81452 backlight driver
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  *
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  * Copyright 2014 Skyworks Solutions Inc.
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  * Author : Gyungoh Yoo <jack.yoo@skyworksinc.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
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- * as published by 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
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License along
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- * with this program; if not, see <http://www.gnu.org/licenses/>.
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  */
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8
 
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 #include <linux/backlight.h>
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 #include <linux/err.h>
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-#include <linux/gpio.h>
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+#include <linux/gpio/consumer.h>
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 #include <linux/init.h>
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 #include <linux/kernel.h>
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 #include <linux/module.h>
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 #include <linux/of.h>
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-#include <linux/of_gpio.h>
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 #include <linux/platform_device.h>
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 #include <linux/regmap.h>
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-#include <linux/platform_data/sky81452-backlight.h>
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 #include <linux/slab.h>
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19
 
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 /* registers */
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@@ -52,6 +39,29 @@
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39
 
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 #define SKY81452_DEFAULT_NAME "lcd-backlight"
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 #define SKY81452_MAX_BRIGHTNESS	(SKY81452_CS + 1)
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+
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+/**
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+ * struct sky81452_platform_data
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+ * @name:	backlight driver name.
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+ *		If it is not defined, default name is lcd-backlight.
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+ * @gpiod_enable:GPIO descriptor which control EN pin
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+ * @enable:	Enable mask for current sink channel 1, 2, 3, 4, 5 and 6.
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+ * @ignore_pwm:	true if DPWMI should be ignored.
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+ * @dpwm_mode:	true is DPWM dimming mode, otherwise Analog dimming mode.
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+ * @phase_shift:true is phase shift mode.
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+ * @short_detection_threshold:	It should be one of 4, 5, 6 and 7V.
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+ * @boost_current_limit:	It should be one of 2300, 2750mA.
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+ */
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+struct sky81452_bl_platform_data {
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+	const char *name;
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+	struct gpio_desc *gpiod_enable;
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+	unsigned int enable;
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+	bool ignore_pwm;
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+	bool dpwm_mode;
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+	bool phase_shift;
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+	unsigned int short_detection_threshold;
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+	unsigned int boost_current_limit;
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+};
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 #define CTZ(b) __builtin_ctz(b)
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..
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@@ -193,7 +203,7 @@
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 	pdata->ignore_pwm = of_property_read_bool(np, "skyworks,ignore-pwm");
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 	pdata->dpwm_mode = of_property_read_bool(np, "skyworks,dpwm-mode");
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 	pdata->phase_shift = of_property_read_bool(np, "skyworks,phase-shift");
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-	pdata->gpio_enable = of_get_gpio(np, 0);
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+	pdata->gpiod_enable = devm_gpiod_get_optional(dev, NULL, GPIOD_OUT_HIGH);
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 	ret = of_property_count_u32_elems(np, "led-sources");
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 	if (ret < 0) {
..
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@@ -264,26 +274,15 @@
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 {
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 	struct device *dev = &pdev->dev;
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 	struct regmap *regmap = dev_get_drvdata(dev->parent);
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-	struct sky81452_bl_platform_data *pdata = dev_get_platdata(dev);
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+	struct sky81452_bl_platform_data *pdata;
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 	struct backlight_device *bd;
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 	struct backlight_properties props;
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 	const char *name;
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 	int ret;
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-	if (!pdata) {
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-		pdata = sky81452_bl_parse_dt(dev);
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-		if (IS_ERR(pdata))
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-			return PTR_ERR(pdata);
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-	}
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-
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-	if (gpio_is_valid(pdata->gpio_enable)) {
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-		ret = devm_gpio_request_one(dev, pdata->gpio_enable,
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-					GPIOF_OUT_INIT_HIGH, "sky81452-en");
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-		if (ret < 0) {
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-			dev_err(dev, "failed to request GPIO. err=%d\n", ret);
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-			return ret;
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-		}
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-	}
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+	pdata = sky81452_bl_parse_dt(dev);
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+	if (IS_ERR(pdata))
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+		return PTR_ERR(pdata);
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 	ret = sky81452_bl_init_device(regmap, pdata);
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 	if (ret < 0) {
..
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@@ -324,8 +323,8 @@
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 	bd->props.brightness = 0;
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 	backlight_update_status(bd);
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-	if (gpio_is_valid(pdata->gpio_enable))
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-		gpio_set_value_cansleep(pdata->gpio_enable, 0);
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+	if (pdata->gpiod_enable)
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+		gpiod_set_value_cansleep(pdata->gpiod_enable, 0);
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 	return 0;
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 }