2644f912b4
The PWM backlight still supports passing a enable GPIO line as platform data using the legacy <linux/gpio.h> API. It turns out that ever board using this mechanism except one is pass .enable_gpio = -1. So we drop all these cargo-culted -1's from all instances of this platform data in the kernel. The remaning board, Palm TC, is converted to pass a machine descriptior table with the "enable" GPIO instead, and delete the platform data entry for enable_gpio and the code handling it and things should work smoothly with the new API. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Krzysztof Kozlowski <krzk@kernel.org Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
27 lines
722 B
C
27 lines
722 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Generic PWM backlight driver data - see drivers/video/backlight/pwm_bl.c
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*/
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#ifndef __LINUX_PWM_BACKLIGHT_H
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#define __LINUX_PWM_BACKLIGHT_H
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#include <linux/backlight.h>
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struct platform_pwm_backlight_data {
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int pwm_id;
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unsigned int max_brightness;
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unsigned int dft_brightness;
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unsigned int lth_brightness;
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unsigned int pwm_period_ns;
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unsigned int *levels;
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unsigned int post_pwm_on_delay;
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unsigned int pwm_off_delay;
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int (*init)(struct device *dev);
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int (*notify)(struct device *dev, int brightness);
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void (*notify_after)(struct device *dev, int brightness);
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void (*exit)(struct device *dev);
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int (*check_fb)(struct device *dev, struct fb_info *info);
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};
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#endif
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