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-rw-r--r--Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml29
-rw-r--r--Documentation/devicetree/bindings/leds/backlight/lp855x-backlight.yaml149
-rw-r--r--Documentation/devicetree/bindings/leds/backlight/lp855x.txt72
-rw-r--r--Documentation/devicetree/bindings/leds/backlight/pwm-backlight.yaml1
-rw-r--r--drivers/video/backlight/adp8860_bl.c4
-rw-r--r--drivers/video/backlight/adp8870_bl.c4
-rw-r--r--drivers/video/backlight/arcxcnn_bl.c2
-rw-r--r--drivers/video/backlight/bd6107.c2
-rw-r--r--drivers/video/backlight/ktz8866.c2
-rw-r--r--drivers/video/backlight/led_bl.c5
-rw-r--r--drivers/video/backlight/lm3630a_bl.c10
-rw-r--r--drivers/video/backlight/lm3639_bl.c2
-rw-r--r--drivers/video/backlight/lp855x_bl.c50
-rw-r--r--drivers/video/backlight/lv5207lp.c2
-rw-r--r--drivers/video/backlight/pwm_bl.c9
15 files changed, 218 insertions, 125 deletions
diff --git a/Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml
index 11b6fc36183d..c914e1276982 100644
--- a/Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml
+++ b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml
@@ -21,6 +21,9 @@ properties:
compatible:
const: kinetic,ktz8866
+ reg:
+ maxItems: 1
+
vddpos-supply:
description: positive boost supply regulator.
@@ -54,6 +57,7 @@ properties:
required:
- compatible
+ - reg
- vddpos-supply
- vddneg-supply
- enable-gpios
@@ -64,14 +68,19 @@ examples:
- |
#include <dt-bindings/gpio/gpio.h>
- backlight {
- compatible = "kinetic,ktz8866";
-
- vddpos-supply = <&bl_vddpos_5p5>;
- vddneg-supply = <&bl_vddneg_5p5>;
- enable-gpios = <&tlmm 139 GPIO_ACTIVE_HIGH>;
- current-num-sinks = <5>;
- kinetic,current-ramp-delay-ms = <128>;
- kinetic,led-enable-ramp-delay-ms = <1>;
- kinetic,enable-lcd-bias;
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ backlight@11 {
+ compatible = "kinetic,ktz8866";
+ reg = <0x11>;
+ vddpos-supply = <&bl_vddpos_5p5>;
+ vddneg-supply = <&bl_vddneg_5p5>;
+ enable-gpios = <&tlmm 139 GPIO_ACTIVE_HIGH>;
+ current-num-sinks = <5>;
+ kinetic,current-ramp-delay-ms = <128>;
+ kinetic,led-enable-ramp-delay-ms = <1>;
+ kinetic,enable-lcd-bias;
+ };
};
diff --git a/Documentation/devicetree/bindings/leds/backlight/lp855x-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/lp855x-backlight.yaml
new file mode 100644
index 000000000000..9416e1bfab92
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/lp855x-backlight.yaml
@@ -0,0 +1,149 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/backlight/lp855x-backlight.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments LP855X backlight controllers
+
+maintainers:
+ - Artur Weber <aweber.kernel@gmail.com>
+
+properties:
+ compatible:
+ enum:
+ - ti,lp8550
+ - ti,lp8551
+ - ti,lp8552
+ - ti,lp8553
+ - ti,lp8555
+ - ti,lp8556
+ - ti,lp8557
+
+ reg:
+ maxItems: 1
+
+ dev-ctrl:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ description:
+ Value of device control register. This is a device-specific value.
+
+ bl-name:
+ $ref: /schemas/types.yaml#/definitions/string
+ description: Backlight device name.
+
+ init-brt:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ description: Initial value of backlight brightness.
+
+ power-supply:
+ description: Regulator which controls the 3V rail.
+
+ enable-supply:
+ description: Regulator which controls the EN/VDDIO input.
+
+ pwms:
+ maxItems: 1
+ description: |
+ PWM channel to use for controlling the backlight; setting this
+ enables the PWM-based backlight control mode.
+
+ pwm-names: true
+
+ pwm-period:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ PWM period value. Deprecated; set the period value in the pwms
+ property instead.
+ deprecated: true
+
+patternProperties:
+ "^rom-[0-9a-f]{2}h$":
+ type: object
+ description: Nodes containing the values of configuration registers.
+ additionalProperties: false
+ properties:
+ rom-addr:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ description: Register address of ROM area to be updated.
+
+ rom-val:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ description: Value to write to the ROM register.
+
+required:
+ - compatible
+ - reg
+ - dev-ctrl
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ backlight@2c {
+ compatible = "ti,lp8555";
+ reg = <0x2c>;
+
+ dev-ctrl = /bits/ 8 <0x00>;
+
+ pwms = <&pwm 0 10000>;
+ pwm-names = "lp8555";
+
+ /* 4V OV, 4 output LED0 string enabled */
+ rom-14h {
+ rom-addr = /bits/ 8 <0x14>;
+ rom-val = /bits/ 8 <0xcf>;
+ };
+
+ /* Heavy smoothing, 24ms ramp time step */
+ rom-15h {
+ rom-addr = /bits/ 8 <0x15>;
+ rom-val = /bits/ 8 <0xc7>;
+ };
+
+ /* 4 output LED1 string enabled */
+ rom-19h {
+ rom-addr = /bits/ 8 <0x19>;
+ rom-val = /bits/ 8 <0x0f>;
+ };
+ };
+ };
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ backlight@2c {
+ compatible = "ti,lp8556";
+ reg = <0x2c>;
+
+ bl-name = "lcd-bl";
+ dev-ctrl = /bits/ 8 <0x85>;
+ init-brt = /bits/ 8 <0x10>;
+ };
+ };
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ backlight@2c {
+ compatible = "ti,lp8557";
+ reg = <0x2c>;
+ enable-supply = <&backlight_vddio>;
+ power-supply = <&backlight_vdd>;
+
+ dev-ctrl = /bits/ 8 <0x41>;
+ init-brt = /bits/ 8 <0x0a>;
+
+ /* 4V OV, 4 output LED string enabled */
+ rom-14h {
+ rom-addr = /bits/ 8 <0x14>;
+ rom-val = /bits/ 8 <0xcf>;
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/leds/backlight/lp855x.txt b/Documentation/devicetree/bindings/leds/backlight/lp855x.txt
deleted file mode 100644
index 88f56641fc28..000000000000
--- a/Documentation/devicetree/bindings/leds/backlight/lp855x.txt
+++ /dev/null
@@ -1,72 +0,0 @@
-lp855x bindings
-
-Required properties:
- - compatible: "ti,lp8550", "ti,lp8551", "ti,lp8552", "ti,lp8553",
- "ti,lp8555", "ti,lp8556", "ti,lp8557"
- - reg: I2C slave address (u8)
- - dev-ctrl: Value of DEVICE CONTROL register (u8). It depends on the device.
-
-Optional properties:
- - bl-name: Backlight device name (string)
- - init-brt: Initial value of backlight brightness (u8)
- - pwm-period: PWM period value. Set only PWM input mode used (u32)
- - rom-addr: Register address of ROM area to be updated (u8)
- - rom-val: Register value to be updated (u8)
- - power-supply: Regulator which controls the 3V rail
- - enable-supply: Regulator which controls the EN/VDDIO input
-
-Example:
-
- /* LP8555 */
- backlight@2c {
- compatible = "ti,lp8555";
- reg = <0x2c>;
-
- dev-ctrl = /bits/ 8 <0x00>;
- pwm-period = <10000>;
-
- /* 4V OV, 4 output LED0 string enabled */
- rom_14h {
- rom-addr = /bits/ 8 <0x14>;
- rom-val = /bits/ 8 <0xcf>;
- };
-
- /* Heavy smoothing, 24ms ramp time step */
- rom_15h {
- rom-addr = /bits/ 8 <0x15>;
- rom-val = /bits/ 8 <0xc7>;
- };
-
- /* 4 output LED1 string enabled */
- rom_19h {
- rom-addr = /bits/ 8 <0x19>;
- rom-val = /bits/ 8 <0x0f>;
- };
- };
-
- /* LP8556 */
- backlight@2c {
- compatible = "ti,lp8556";
- reg = <0x2c>;
-
- bl-name = "lcd-bl";
- dev-ctrl = /bits/ 8 <0x85>;
- init-brt = /bits/ 8 <0x10>;
- };
-
- /* LP8557 */
- backlight@2c {
- compatible = "ti,lp8557";
- reg = <0x2c>;
- enable-supply = <&backlight_vddio>;
- power-supply = <&backlight_vdd>;
-
- dev-ctrl = /bits/ 8 <0x41>;
- init-brt = /bits/ 8 <0x0a>;
-
- /* 4V OV, 4 output LED string enabled */
- rom_14h {
- rom-addr = /bits/ 8 <0x14>;
- rom-val = /bits/ 8 <0xcf>;
- };
- };
diff --git a/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.yaml
index 5ec47a8c6568..535690288990 100644
--- a/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.yaml
+++ b/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.yaml
@@ -68,7 +68,6 @@ dependencies:
required:
- compatible
- pwms
- - power-supply
additionalProperties: false
diff --git a/drivers/video/backlight/adp8860_bl.c b/drivers/video/backlight/adp8860_bl.c
index a479aab90f78..f51ada4795e8 100644
--- a/drivers/video/backlight/adp8860_bl.c
+++ b/drivers/video/backlight/adp8860_bl.c
@@ -803,8 +803,8 @@ static struct i2c_driver adp8860_driver = {
.name = KBUILD_MODNAME,
.pm = &adp8860_i2c_pm_ops,
},
- .probe_new = adp8860_probe,
- .remove = adp8860_remove,
+ .probe = adp8860_probe,
+ .remove = adp8860_remove,
.id_table = adp8860_id,
};
diff --git a/drivers/video/backlight/adp8870_bl.c b/drivers/video/backlight/adp8870_bl.c
index d6b0007db649..6bb18dc970e9 100644
--- a/drivers/video/backlight/adp8870_bl.c
+++ b/drivers/video/backlight/adp8870_bl.c
@@ -973,8 +973,8 @@ static struct i2c_driver adp8870_driver = {
.name = KBUILD_MODNAME,
.pm = &adp8870_i2c_pm_ops,
},
- .probe_new = adp8870_probe,
- .remove = adp8870_remove,
+ .probe = adp8870_probe,
+ .remove = adp8870_remove,
.id_table = adp8870_id,
};
diff --git a/drivers/video/backlight/arcxcnn_bl.c b/drivers/video/backlight/arcxcnn_bl.c
index 088bcca547dd..1d5a570cfe02 100644
--- a/drivers/video/backlight/arcxcnn_bl.c
+++ b/drivers/video/backlight/arcxcnn_bl.c
@@ -392,7 +392,7 @@ static struct i2c_driver arcxcnn_driver = {
.name = "arcxcnn_bl",
.of_match_table = arcxcnn_dt_ids,
},
- .probe_new = arcxcnn_probe,
+ .probe = arcxcnn_probe,
.remove = arcxcnn_remove,
.id_table = arcxcnn_ids,
};
diff --git a/drivers/video/backlight/bd6107.c b/drivers/video/backlight/bd6107.c
index f4db6c064635..7df25faa07a5 100644
--- a/drivers/video/backlight/bd6107.c
+++ b/drivers/video/backlight/bd6107.c
@@ -192,7 +192,7 @@ static struct i2c_driver bd6107_driver = {
.driver = {
.name = "bd6107",
},
- .probe_new = bd6107_probe,
+ .probe = bd6107_probe,
.remove = bd6107_remove,
.id_table = bd6107_ids,
};
diff --git a/drivers/video/backlight/ktz8866.c b/drivers/video/backlight/ktz8866.c
index d38c13ad39c7..9c980f2571ee 100644
--- a/drivers/video/backlight/ktz8866.c
+++ b/drivers/video/backlight/ktz8866.c
@@ -196,7 +196,7 @@ static struct i2c_driver ktz8866_driver = {
.name = "ktz8866",
.of_match_table = ktz8866_match_table,
},
- .probe_new = ktz8866_probe,
+ .probe = ktz8866_probe,
.remove = ktz8866_remove,
.id_table = ktz8866_ids,
};
diff --git a/drivers/video/backlight/led_bl.c b/drivers/video/backlight/led_bl.c
index a1b6a2ad73a0..3259292fda76 100644
--- a/drivers/video/backlight/led_bl.c
+++ b/drivers/video/backlight/led_bl.c
@@ -209,8 +209,11 @@ static int led_bl_probe(struct platform_device *pdev)
return PTR_ERR(priv->bl_dev);
}
- for (i = 0; i < priv->nb_leds; i++)
+ for (i = 0; i < priv->nb_leds; i++) {
+ mutex_lock(&priv->leds[i]->led_access);
led_sysfs_disable(priv->leds[i]);
+ mutex_unlock(&priv->leds[i]->led_access);
+ }
backlight_update_status(priv->bl_dev);
diff --git a/drivers/video/backlight/lm3630a_bl.c b/drivers/video/backlight/lm3630a_bl.c
index d8c42acecb5d..8fcb62be597b 100644
--- a/drivers/video/backlight/lm3630a_bl.c
+++ b/drivers/video/backlight/lm3630a_bl.c
@@ -202,7 +202,9 @@ static int lm3630a_bank_a_update_status(struct backlight_device *bl)
usleep_range(1000, 2000);
/* minimum brightness is 0x04 */
ret = lm3630a_write(pchip, REG_BRT_A, bl->props.brightness);
- if (bl->props.brightness < 0x4)
+
+ if (backlight_is_blank(bl) || (backlight_get_brightness(bl) < 0x4))
+ /* turn the string off */
ret |= lm3630a_update(pchip, REG_CTRL, LM3630A_LEDA_ENABLE, 0);
else
ret |= lm3630a_update(pchip, REG_CTRL,
@@ -277,7 +279,9 @@ static int lm3630a_bank_b_update_status(struct backlight_device *bl)
usleep_range(1000, 2000);
/* minimum brightness is 0x04 */
ret = lm3630a_write(pchip, REG_BRT_B, bl->props.brightness);
- if (bl->props.brightness < 0x4)
+
+ if (backlight_is_blank(bl) || (backlight_get_brightness(bl) < 0x4))
+ /* turn the string off */
ret |= lm3630a_update(pchip, REG_CTRL, LM3630A_LEDB_ENABLE, 0);
else
ret |= lm3630a_update(pchip, REG_CTRL,
@@ -616,7 +620,7 @@ static struct i2c_driver lm3630a_i2c_driver = {
.name = LM3630A_NAME,
.of_match_table = lm3630a_match_table,
},
- .probe_new = lm3630a_probe,
+ .probe = lm3630a_probe,
.remove = lm3630a_remove,
.id_table = lm3630a_id,
};
diff --git a/drivers/video/backlight/lm3639_bl.c b/drivers/video/backlight/lm3639_bl.c
index a836628ce06e..5246c171497d 100644
--- a/drivers/video/backlight/lm3639_bl.c
+++ b/drivers/video/backlight/lm3639_bl.c
@@ -411,7 +411,7 @@ static struct i2c_driver lm3639_i2c_driver = {
.driver = {
.name = LM3639_NAME,
},
- .probe_new = lm3639_probe,
+ .probe = lm3639_probe,
.remove = lm3639_remove,
.id_table = lm3639_id,
};
diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c
index a57c9ef3b1cc..1c9e921bca14 100644
--- a/drivers/video/backlight/lp855x_bl.c
+++ b/drivers/video/backlight/lp855x_bl.c
@@ -218,23 +218,10 @@ err:
static void lp855x_pwm_ctrl(struct lp855x *lp, int br, int max_br)
{
- struct pwm_device *pwm;
struct pwm_state state;
- /* request pwm device with the consumer name */
- if (!lp->pwm) {
- pwm = devm_pwm_get(lp->dev, lp->chipname);
- if (IS_ERR(pwm))
- return;
-
- lp->pwm = pwm;
-
- pwm_init_state(lp->pwm, &state);
- } else {
- pwm_get_state(lp->pwm, &state);
- }
+ pwm_get_state(lp->pwm, &state);
- state.period = lp->pdata->period_ns;
state.duty_cycle = div_u64(br * state.period, max_br);
state.enabled = state.duty_cycle;
@@ -339,6 +326,7 @@ static int lp855x_parse_dt(struct lp855x *lp)
of_property_read_string(node, "bl-name", &pdata->name);
of_property_read_u8(node, "dev-ctrl", &pdata->device_control);
of_property_read_u8(node, "init-brt", &pdata->initial_brightness);
+ /* Deprecated, specify period in pwms property instead */
of_property_read_u32(node, "pwm-period", &pdata->period_ns);
/* Fill ROM platform data if defined */
@@ -399,6 +387,7 @@ static int lp855x_probe(struct i2c_client *cl)
const struct i2c_device_id *id = i2c_client_get_device_id(cl);
const struct acpi_device_id *acpi_id = NULL;
struct device *dev = &cl->dev;
+ struct pwm_state pwmstate;
struct lp855x *lp;
int ret;
@@ -457,11 +446,6 @@ static int lp855x_probe(struct i2c_client *cl)
}
}
- if (lp->pdata->period_ns > 0)
- lp->mode = PWM_BASED;
- else
- lp->mode = REGISTER_BASED;
-
lp->supply = devm_regulator_get(dev, "power");
if (IS_ERR(lp->supply)) {
if (PTR_ERR(lp->supply) == -EPROBE_DEFER)
@@ -472,11 +456,31 @@ static int lp855x_probe(struct i2c_client *cl)
lp->enable = devm_regulator_get_optional(dev, "enable");
if (IS_ERR(lp->enable)) {
ret = PTR_ERR(lp->enable);
- if (ret == -ENODEV) {
+ if (ret == -ENODEV)
lp->enable = NULL;
- } else {
+ else
return dev_err_probe(dev, ret, "getting enable regulator\n");
- }
+ }
+
+ lp->pwm = devm_pwm_get(lp->dev, lp->chipname);
+ if (IS_ERR(lp->pwm)) {
+ ret = PTR_ERR(lp->pwm);
+ if (ret == -ENODEV || ret == -EINVAL)
+ lp->pwm = NULL;
+ else
+ return dev_err_probe(dev, ret, "getting PWM\n");
+
+ lp->mode = REGISTER_BASED;
+ dev_dbg(dev, "mode: register based\n");
+ } else {
+ pwm_init_state(lp->pwm, &pwmstate);
+ /* Legacy platform data compatibility */
+ if (lp->pdata->period_ns > 0)
+ pwmstate.period = lp->pdata->period_ns;
+ pwm_apply_state(lp->pwm, &pwmstate);
+
+ lp->mode = PWM_BASED;
+ dev_dbg(dev, "mode: PWM based\n");
}
if (lp->supply) {
@@ -587,7 +591,7 @@ static struct i2c_driver lp855x_driver = {
.of_match_table = of_match_ptr(lp855x_dt_ids),
.acpi_match_table = ACPI_PTR(lp855x_acpi_match),
},
- .probe_new = lp855x_probe,
+ .probe = lp855x_probe,
.remove = lp855x_remove,
.id_table = lp855x_ids,
};
diff --git a/drivers/video/backlight/lv5207lp.c b/drivers/video/backlight/lv5207lp.c
index 00673c8b66ac..56695ce67e48 100644
--- a/drivers/video/backlight/lv5207lp.c
+++ b/drivers/video/backlight/lv5207lp.c
@@ -141,7 +141,7 @@ static struct i2c_driver lv5207lp_driver = {
.driver = {
.name = "lv5207lp",
},
- .probe_new = lv5207lp_probe,
+ .probe = lv5207lp_probe,
.remove = lv5207lp_remove,
.id_table = lv5207lp_ids,
};
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index fce412234d10..a51fbab96368 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -54,8 +54,7 @@ static void pwm_backlight_power_on(struct pwm_bl_data *pb)
if (pb->post_pwm_on_delay)
msleep(pb->post_pwm_on_delay);
- if (pb->enable_gpio)
- gpiod_set_value_cansleep(pb->enable_gpio, 1);
+ gpiod_set_value_cansleep(pb->enable_gpio, 1);
pb->enabled = true;
}
@@ -65,8 +64,7 @@ static void pwm_backlight_power_off(struct pwm_bl_data *pb)
if (!pb->enabled)
return;
- if (pb->enable_gpio)
- gpiod_set_value_cansleep(pb->enable_gpio, 0);
+ gpiod_set_value_cansleep(pb->enable_gpio, 0);
if (pb->pwm_off_delay)
msleep(pb->pwm_off_delay);
@@ -429,8 +427,7 @@ static int pwm_backlight_initial_power_state(const struct pwm_bl_data *pb)
* Synchronize the enable_gpio with the observed state of the
* hardware.
*/
- if (pb->enable_gpio)
- gpiod_direction_output(pb->enable_gpio, active);
+ gpiod_direction_output(pb->enable_gpio, active);
/*
* Do not change pb->enabled here! pb->enabled essentially
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 00:36:26 +0000