diff options
Diffstat (limited to 'drivers/video/backlight')
-rw-r--r-- | drivers/video/backlight/88pm860x_bl.c | 2 | ||||
-rw-r--r-- | drivers/video/backlight/pm8941-wled.c | 2 | ||||
-rw-r--r-- | drivers/video/backlight/pwm_bl.c | 30 |
3 files changed, 20 insertions, 14 deletions
diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c index 6d8dc2c77520..51e0c4be08df 100644 --- a/drivers/video/backlight/88pm860x_bl.c +++ b/drivers/video/backlight/88pm860x_bl.c @@ -174,7 +174,7 @@ static int pm860x_backlight_dt_init(struct platform_device *pdev, return -ENODEV; } for_each_child_of_node(nproot, np) { - if (!of_node_cmp(np->name, name)) { + if (of_node_name_eq(np, name)) { of_property_read_u32(np, "marvell,88pm860x-iset", &iset); data->iset = PM8606_WLED_CURRENT(iset); diff --git a/drivers/video/backlight/pm8941-wled.c b/drivers/video/backlight/pm8941-wled.c index 0b6d21955d91..da6aab20fdcb 100644 --- a/drivers/video/backlight/pm8941-wled.c +++ b/drivers/video/backlight/pm8941-wled.c @@ -330,7 +330,7 @@ static int pm8941_wled_configure(struct pm8941_wled *wled, struct device *dev) rc = of_property_read_string(dev->of_node, "label", &wled->name); if (rc) - wled->name = dev->of_node->name; + wled->name = devm_kasprintf(dev, GFP_KERNEL, "%pOFn", dev->of_node); *cfg = pm8941_wled_config_defaults; for (i = 0; i < ARRAY_SIZE(u32_opts); ++i) { diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index f9ef0673a083..53b8ceea9bde 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -30,6 +30,7 @@ struct pwm_bl_data { struct device *dev; unsigned int lth_brightness; unsigned int *levels; + bool enabled; struct regulator *power_supply; struct gpio_desc *enable_gpio; unsigned int scale; @@ -50,7 +51,7 @@ static void pwm_backlight_power_on(struct pwm_bl_data *pb) int err; pwm_get_state(pb->pwm, &state); - if (state.enabled) + if (pb->enabled) return; err = regulator_enable(pb->power_supply); @@ -65,6 +66,8 @@ static void pwm_backlight_power_on(struct pwm_bl_data *pb) if (pb->enable_gpio) gpiod_set_value_cansleep(pb->enable_gpio, 1); + + pb->enabled = true; } static void pwm_backlight_power_off(struct pwm_bl_data *pb) @@ -72,7 +75,7 @@ static void pwm_backlight_power_off(struct pwm_bl_data *pb) struct pwm_state state; pwm_get_state(pb->pwm, &state); - if (!state.enabled) + if (!pb->enabled) return; if (pb->enable_gpio) @@ -86,6 +89,7 @@ static void pwm_backlight_power_off(struct pwm_bl_data *pb) pwm_apply_state(pb->pwm, &state); regulator_disable(pb->power_supply); + pb->enabled = false; } static int compute_duty_cycle(struct pwm_bl_data *pb, int brightness) @@ -269,6 +273,16 @@ static int pwm_backlight_parse_dt(struct device *dev, memset(data, 0, sizeof(*data)); /* + * These values are optional and set as 0 by default, the out values + * are modified only if a valid u32 value can be decoded. + */ + of_property_read_u32(node, "post-pwm-on-delay-ms", + &data->post_pwm_on_delay); + of_property_read_u32(node, "pwm-off-delay-ms", &data->pwm_off_delay); + + data->enable_gpio = -EINVAL; + + /* * Determine the number of brightness levels, if this property is not * set a default table of brightness levels will be used. */ @@ -380,15 +394,6 @@ static int pwm_backlight_parse_dt(struct device *dev, data->max_brightness--; } - /* - * These values are optional and set as 0 by default, the out values - * are modified only if a valid u32 value can be decoded. - */ - of_property_read_u32(node, "post-pwm-on-delay-ms", - &data->post_pwm_on_delay); - of_property_read_u32(node, "pwm-off-delay-ms", &data->pwm_off_delay); - - data->enable_gpio = -EINVAL; return 0; } @@ -430,7 +435,7 @@ static int pwm_backlight_initial_power_state(const struct pwm_bl_data *pb) */ /* if the enable GPIO is disabled, do not enable the backlight */ - if (pb->enable_gpio && gpiod_get_value(pb->enable_gpio) == 0) + if (pb->enable_gpio && gpiod_get_value_cansleep(pb->enable_gpio) == 0) return FB_BLANK_POWERDOWN; /* The regulator is disabled, do not enable the backlight */ @@ -483,6 +488,7 @@ static int pwm_backlight_probe(struct platform_device *pdev) pb->check_fb = data->check_fb; pb->exit = data->exit; pb->dev = &pdev->dev; + pb->enabled = false; pb->post_pwm_on_delay = data->post_pwm_on_delay; pb->pwm_off_delay = data->pwm_off_delay; |