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-rw-r--r--Documentation/devicetree/bindings/video/backlight/pm8941-wled.txt (renamed from Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt)5
-rw-r--r--drivers/leds/Kconfig8
-rw-r--r--drivers/leds/Makefile1
-rw-r--r--drivers/video/backlight/Kconfig7
-rw-r--r--drivers/video/backlight/Makefile1
-rw-r--r--drivers/video/backlight/pm8941-wled.c (renamed from drivers/leds/leds-pm8941-wled.c)60
6 files changed, 35 insertions, 47 deletions
diff --git a/Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt b/Documentation/devicetree/bindings/video/backlight/pm8941-wled.txt
index a85a964d61f5..424f8444a6cd 100644
--- a/Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt
+++ b/Documentation/devicetree/bindings/video/backlight/pm8941-wled.txt
@@ -5,10 +5,7 @@ Required properties:
- reg: slave address
Optional properties:
-- label: The label for this led
- See Documentation/devicetree/bindings/leds/common.txt
-- linux,default-trigger: Default trigger assigned to the LED
- See Documentation/devicetree/bindings/leds/common.txt
+- label: The name of the backlight device
- qcom,cs-out: bool; enable current sink output
- qcom,cabc: bool; enable content adaptive backlight control
- qcom,ext-gen: bool; use externally generated modulator signal to dim
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 9ad35f72ab4c..b8d4b965ca2a 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -578,14 +578,6 @@ config LEDS_VERSATILE
This option enabled support for the LEDs on the ARM Versatile
and RealView boards. Say Y to enabled these.
-config LEDS_PM8941_WLED
- tristate "LED support for the Qualcomm PM8941 WLED block"
- depends on LEDS_CLASS
- select REGMAP
- help
- This option enables support for the 'White' LED block
- on Qualcomm PM8941 PMICs.
-
comment "LED Triggers"
source "drivers/leds/trigger/Kconfig"
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 8d6a24a2f513..abe96d960ebe 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -63,7 +63,6 @@ obj-$(CONFIG_LEDS_BLINKM) += leds-blinkm.o
obj-$(CONFIG_LEDS_SYSCON) += leds-syscon.o
obj-$(CONFIG_LEDS_VERSATILE) += leds-versatile.o
obj-$(CONFIG_LEDS_MENF21BMC) += leds-menf21bmc.o
-obj-$(CONFIG_LEDS_PM8941_WLED) += leds-pm8941-wled.o
obj-$(CONFIG_LEDS_KTD2692) += leds-ktd2692.o
# LED SPI Drivers
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 0505b796d743..5ffa4b4e26c0 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -299,6 +299,13 @@ config BACKLIGHT_TOSA
If you have an Sharp SL-6000 Zaurus say Y to enable a driver
for its backlight
+config BACKLIGHT_PM8941_WLED
+ tristate "Qualcomm PM8941 WLED Driver"
+ select REGMAP
+ help
+ If you have the Qualcomm PM8941, say Y to enable a driver for the
+ WLED block.
+
config BACKLIGHT_SAHARA
tristate "Tabletkiosk Sahara Touch-iT Backlight Driver"
depends on X86
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index d67073f9d421..16ec534cff30 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -48,6 +48,7 @@ obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o
obj-$(CONFIG_BACKLIGHT_OT200) += ot200_bl.o
obj-$(CONFIG_BACKLIGHT_PANDORA) += pandora_bl.o
obj-$(CONFIG_BACKLIGHT_PCF50633) += pcf50633-backlight.o
+obj-$(CONFIG_BACKLIGHT_PM8941_WLED) += pm8941-wled.o
obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o
obj-$(CONFIG_BACKLIGHT_SAHARA) += kb3886_bl.o
obj-$(CONFIG_BACKLIGHT_SKY81452) += sky81452-backlight.o
diff --git a/drivers/leds/leds-pm8941-wled.c b/drivers/video/backlight/pm8941-wled.c
index bf64a593fbf1..c704c3236034 100644
--- a/drivers/leds/leds-pm8941-wled.c
+++ b/drivers/video/backlight/pm8941-wled.c
@@ -11,7 +11,7 @@
*/
#include <linux/kernel.h>
-#include <linux/leds.h>
+#include <linux/backlight.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -76,30 +76,29 @@ struct pm8941_wled_config {
};
struct pm8941_wled {
+ const char *name;
struct regmap *regmap;
u16 addr;
- struct led_classdev cdev;
-
struct pm8941_wled_config cfg;
};
-static int pm8941_wled_set(struct led_classdev *cdev,
- enum led_brightness value)
+static int pm8941_wled_update_status(struct backlight_device *bl)
{
- struct pm8941_wled *wled;
+ struct pm8941_wled *wled = bl_get_data(bl);
+ u16 val = bl->props.brightness;
u8 ctrl = 0;
- u16 val;
int rc;
int i;
- wled = container_of(cdev, struct pm8941_wled, cdev);
+ if (bl->props.power != FB_BLANK_UNBLANK ||
+ bl->props.fb_blank != FB_BLANK_UNBLANK ||
+ bl->props.state & BL_CORE_FBBLANK)
+ val = 0;
- if (value != 0)
+ if (val != 0)
ctrl = PM8941_WLED_REG_MOD_EN_BIT;
- val = value * PM8941_WLED_REG_VAL_MAX / LED_FULL;
-
rc = regmap_update_bits(wled->regmap,
wled->addr + PM8941_WLED_REG_MOD_EN,
PM8941_WLED_REG_MOD_EN_MASK, ctrl);
@@ -128,16 +127,6 @@ static int pm8941_wled_set(struct led_classdev *cdev,
return rc;
}
-static void pm8941_wled_set_brightness(struct led_classdev *cdev,
- enum led_brightness value)
-{
- if (pm8941_wled_set(cdev, value)) {
- dev_err(cdev->dev, "Unable to set brightness\n");
- return;
- }
- cdev->brightness = value;
-}
-
static int pm8941_wled_setup(struct pm8941_wled *wled)
{
int rc;
@@ -336,12 +325,9 @@ static int pm8941_wled_configure(struct pm8941_wled *wled, struct device *dev)
}
wled->addr = val;
- rc = of_property_read_string(dev->of_node, "label", &wled->cdev.name);
+ rc = of_property_read_string(dev->of_node, "label", &wled->name);
if (rc)
- wled->cdev.name = dev->of_node->name;
-
- wled->cdev.default_trigger = of_get_property(dev->of_node,
- "linux,default-trigger", NULL);
+ wled->name = dev->of_node->name;
*cfg = pm8941_wled_config_defaults;
for (i = 0; i < ARRAY_SIZE(u32_opts); ++i) {
@@ -377,8 +363,14 @@ static int pm8941_wled_configure(struct pm8941_wled *wled, struct device *dev)
return 0;
}
+static const struct backlight_ops pm8941_wled_ops = {
+ .update_status = pm8941_wled_update_status,
+};
+
static int pm8941_wled_probe(struct platform_device *pdev)
{
+ struct backlight_properties props;
+ struct backlight_device *bl;
struct pm8941_wled *wled;
struct regmap *regmap;
int rc;
@@ -403,13 +395,14 @@ static int pm8941_wled_probe(struct platform_device *pdev)
if (rc)
return rc;
- wled->cdev.brightness_set = pm8941_wled_set_brightness;
-
- rc = devm_led_classdev_register(&pdev->dev, &wled->cdev);
- if (rc)
- return rc;
-
- platform_set_drvdata(pdev, wled);
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_RAW;
+ props.max_brightness = PM8941_WLED_REG_VAL_MAX;
+ bl = devm_backlight_device_register(&pdev->dev, wled->name,
+ &pdev->dev, wled,
+ &pm8941_wled_ops, &props);
+ if (IS_ERR(bl))
+ return PTR_ERR(bl);
return 0;
};
@@ -432,4 +425,3 @@ module_platform_driver(pm8941_wled_driver);
MODULE_DESCRIPTION("pm8941 wled driver");
MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:pm8941-wled");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.