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backlight: pwm_bl: Drop support for legacy PWM probing

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There is no in-tree user left which relies on legacy probing. So drop
support for it which removes another user of the deprecated
pwm_request() function.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20221117072151.3789691-1-u.kleine-koenig@pengutronix.de
This commit is contained in:
Uwe Kleine-König 2022-11-17 08:21:51 +01:00 committed by Lee Jones
parent 901ae537b7
commit 5a7fbe452a
2 changed files with 0 additions and 13 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

12
drivers/video/backlight/pwm_bl.c
View file

@ -28,7 +28,6 @@ struct pwm_bl_data {
struct regulator *power_supply;
struct gpio_desc *enable_gpio;
unsigned int scale;
bool legacy;
unsigned int post_pwm_on_delay;
unsigned int pwm_off_delay;
int (*notify)(struct device *,
@ -455,7 +454,6 @@ static int pwm_backlight_probe(struct platform_device *pdev)
struct platform_pwm_backlight_data defdata;
struct backlight_properties props;
struct backlight_device *bl;
struct device_node *node = pdev->dev.of_node;
struct pwm_bl_data *pb;
struct pwm_state state;
unsigned int i;
@ -506,12 +504,6 @@ static int pwm_backlight_probe(struct platform_device *pdev)
}
pb->pwm = devm_pwm_get(&pdev->dev, NULL);
if (IS_ERR(pb->pwm) && PTR_ERR(pb->pwm) != -EPROBE_DEFER && !node) {
dev_err(&pdev->dev, "unable to request PWM, trying legacy API\n");
pb->legacy = true;
pb->pwm = pwm_request(data->pwm_id, "pwm-backlight");
}
if (IS_ERR(pb->pwm)) {
ret = PTR_ERR(pb->pwm);
if (ret != -EPROBE_DEFER)
@ -604,8 +596,6 @@ static int pwm_backlight_probe(struct platform_device *pdev)
if (IS_ERR(bl)) {
dev_err(&pdev->dev, "failed to register backlight\n");
ret = PTR_ERR(bl);
if (pb->legacy)
pwm_free(pb->pwm);
goto err_alloc;
}
@ -639,8 +629,6 @@ static int pwm_backlight_remove(struct platform_device *pdev)
if (pb->exit)
pb->exit(&pdev->dev);
if (pb->legacy)
pwm_free(pb->pwm);
return 0;
}

1
include/linux/pwm_backlight.h
View file

@ -8,7 +8,6 @@
#include <linux/backlight.h>
struct platform_pwm_backlight_data {
int pwm_id;
unsigned int max_brightness;
unsigned int dft_brightness;
unsigned int lth_brightness;