Merge tag 'leds-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds

Pull LED updates from Lee Jones:
 "LED Triggers:
   - Allow writing "default" to the sysfs 'trigger' attribute to set an
     LED to its default trigger
   - If the default trigger is "none", writing "default" will remove the
     current trigger
   - Updated sysfs ABI documentation for the new "default" trigger
     functionality

  LED KUnit Testing:
   - Provide a skeleton KUnit test suite for the LEDs framework
   - Expand the LED class device registration KUnit test to cover more
     scenarios, including 'brightness_get' behavior
   - Add KUnit tests for the LED lookup and get API ('led_add_lookup',
     'devm_led_get')

  LED Flash Class:
   - Add support for setting flash/strobe duration through a new
     'duration_set' op and 'led_set_flash_duration()' function, aligning
     with 'V4L2_CID_FLASH_DURATION'

  Texas Instruments TPS6131x:
   - Add a new driver for the TPS61310/TPS61311 flash LED controllers
   - The driver supports the device's three constant-current sinks for
     flash and torch modes

  LED Core:
   - Prevent potential 'snprintf()' truncations in LED names by checking
     for buffer overflows

  ChromeOS EC LEDs:
   - Avoid a -Wflex-array-member-not-at-end GCC warning by replacing an
     on-stack flexible structure definition with a utility function call

  Multicolor LEDs:
   - Fix issue where setting multi_intensity while software blinking is
     active could stop blinking

  PCA955x LEDs:
   - Avoid potential buffer overflow when creating default labels by
     changing a field's type to 'u8' and updating format specifiers

  PCA995x LEDs:
   - Fix a typo (stray space) in an 'of_device_id' entry in the
     'pca995x_of_match' table

  Kconfig:
   - Prevent LED drivers from being enabled by default when
     'COMPILE_TEST' is set

  Device Property API:
   - Split 'device_get_child_node_count()' into a new helper
     'fwnode_get_child_node_count()' that doesn't require a device
     struct, making the API more symmetrical

  Driver Modernization (using 'fwnode_get_child_node_count()'):
   - Update 'leds-pwm-multicolor', 'leds-ncp5623' and 'leds-ncp5623' to
     use the new 'fwnode_get_child_node_count()' helper, removing their
     custom implementation
   - As above in the USB Type-C TCPM driver

  Driver Modernization (using new GPIO setter callbacks):
   - Convert 'leds-lgm-sso' to use new GPIO line value setter callbacks
     which return an integer for error handling
   - Convert 'leds-pca955x', 'leds-pca9532' and 'leds-tca6507' to use
     new GPIO setter callbacks

  Documentation:
   - Remove the '.rst' extension for 'leds-st1202' in the documentation
     index for consistency

  LP8860 LEDs:
   - Use 'regmap_multi_reg_write()' for EEPROM writes instead of manual
     looping
   - Use scoped mutex guards and 'devm_mutex_init()' to simplify
     function exits and ensure automatic cleanup
   - Remove default register definitions that are unused when regmap
     caching is not active
   - Use 'devm_regulator_get_enable_optional()' to handle the optional
     regulator, simplifying enabling and removing manual disabling
   - Refactor 'lp8860_unlock_eeprom()' to only perform the unlock
     operation, removing the lock part and an unnecessary parameter
   - Use a 'devm' action to disable the enable-GPIO, simplifying cleanup
     and error paths, and remove the now-empty '.remove()' function

  Turris Omnia LEDs:
   - Drop unnecessary commas in terminator entries of 'struct attribute'
     and 'struct of_device_id' arrays

  MT6370 RGB LEDs:
   - Use the 'LINEAR_RANGE()' for defining 'struct linear_range' entries
     to improve robustness

  Texas Instruments TPS6131x:
   - Add new devicetree bindings for the TI TPS61310/TPS61311 flash LED
     driver"

* tag 'leds-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (31 commits)
  leds: tps6131x: Add support for Texas Instruments TPS6131X flash LED driver
  dt-bindings: leds: Add Texas Instruments TPS6131x flash LED driver
  leds: flash: Add support for flash/strobe duration
  leds: rgb: leds-mt6370-rgb: Improve definition of some struct linear_range
  leds: led-test: Provide tests for the lookup and get infrastructure
  leds: led-test: Fill out the registration test to cover more test cases
  leds: led-test: Remove standard error checking after KUNIT_ASSERT_*()
  leds: pca995x: Fix typo in pca995x_of_match's of_device_id entry
  leds: Provide skeleton KUnit testing for the LEDs framework
  leds: tca6507: Use new GPIO line value setter callbacks
  leds: pca9532: Use new GPIO line value setter callbacks
  leds: pca955x: Use new GPIO line value setter callbacks
  leds: lgm-sso: Use new GPIO line value setter callbacks
  leds: Do not enable by default during compile testing
  leds: turris-omnia: Drop commas in the terminator entries
  leds: lp8860: Disable GPIO with devm action
  leds: lp8860: Only unlock in lp8860_unlock_eeprom()
  leds: lp8860: Enable regulator using enable_optional helper
  leds: lp8860: Remove default regs when not caching
  leds: lp8860: Use new mutex guards to cleanup function exits
  ...
This commit is contained in:
Linus Torvalds committed 2025-06-03 12:10:31 -07:00
commit b546608ea2
30 files changed
+1288 -258

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@@ -72,6 +72,12 @@ Description:
/sys/class/leds/<led> once a given trigger is selected. For
their documentation see `sysfs-class-led-trigger-*`.
Writing "none" removes the trigger for this LED.
Writing "default" sets the trigger to the LED's default trigger
(which would often be configured in the device tree for the
hardware).
What: /sys/class/leds/<led>/inverted
Date: January 2011
KernelVersion: 2.6.38
@@ -0,0 +1,120 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/leds/ti,tps61310.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Texas Instruments TPS6131X flash LED driver
maintainers:
- Matthias Fend <matthias.fend@emfend.at>
description: |
The TPS61310/TPS61311 is a flash LED driver with I2C interface.
Its power stage is capable of supplying a maximum total current of roughly 1500mA.
The TPS6131x provides three constant-current sinks, capable of sinking
up to 2 x 400mA (LED1 and LED3) and 800mA (LED2) in flash mode.
In torch mode, each sink (LED1, LED2, LED3) supports currents up to 175mA.
Since the three current sinks share most of the control components such as
flash timer, control logic, safety timer and the operating mode, they cannot
be used completely independently of each other. Therefore, only one LED is
supported, but the current sinks can be combined accordingly.
The data sheet can be found at:
https://www.ti.com/lit/ds/symlink/tps61310.pdf
properties:
compatible:
oneOf:
- items:
- enum:
- ti,tps61311
- const: ti,tps61310
- items:
- const: ti,tps61310
reg:
maxItems: 1
reset-gpios:
maxItems: 1
description: GPIO connected to NRESET pin
ti,valley-current-limit:
type: boolean
description:
Reduce the valley peak current limit from 1750mA to 1250mA (TPS61310) or
from 2480mA to 1800mA (TPS61311).
led:
type: object
$ref: common.yaml#
unevaluatedProperties: false
properties:
led-sources:
minItems: 1
maxItems: 3
items:
enum: [1, 2, 3]
led-max-microamp:
oneOf:
- minimum: 50000
maximum: 350000
multipleOf: 50000
- minimum: 25000
maximum: 525000
multipleOf: 25000
flash-max-microamp:
oneOf:
- minimum: 50000
maximum: 800000
multipleOf: 50000
- minimum: 25000
maximum: 1500000
multipleOf: 25000
flash-max-timeout-us:
enum: [ 5300, 10700, 16000, 21300, 26600, 32000, 37300, 68200, 71500,
102200, 136300, 170400, 204500, 340800, 579300, 852000 ]
required:
- led-sources
- led-max-microamp
- flash-max-microamp
- flash-max-timeout-us
required:
- compatible
- reg
- led
additionalProperties: false
examples:
- |
#include <dt-bindings/leds/common.h>
#include <dt-bindings/gpio/gpio.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
led-controller@33 {
compatible = "ti,tps61311", "ti,tps61310";
reg = <0x33>;
reset-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>;
led {
function = LED_FUNCTION_FLASH;
color = <LED_COLOR_ID_WHITE>;
led-sources = <1>, <2>, <3>;
led-max-microamp = <525000>;
flash-max-microamp = <1500000>;
flash-max-timeout-us = <852000>;
};
};
};
+1 -1
View File
@@ -28,5 +28,5 @@ LEDs
leds-mlxcpld
leds-mt6370-rgb
leds-sc27xx
leds-st1202.rst
leds-st1202
leds-qcom-lpg
+7
View File
@@ -24447,6 +24447,13 @@ F: Documentation/devicetree/bindings/hwmon/ti,tps23861.yaml
F: Documentation/hwmon/tps23861.rst
F: drivers/hwmon/tps23861.c
TEXAS INSTRUMENTS TPS6131X FLASH LED DRIVER
M: Matthias Fend <matthias.fend@emfend.at>
L: linux-leds@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/leds/ti,tps6131x.yaml
F: drivers/leds/flash/leds-tps6131x.c
TEXAS INSTRUMENTS' DAC7612 DAC DRIVER
M: Ricardo Ribalda <ribalda@kernel.org>
L: linux-iio@vger.kernel.org
+6 -6
View File
@@ -928,22 +928,22 @@ bool fwnode_device_is_available(const struct fwnode_handle *fwnode)
EXPORT_SYMBOL_GPL(fwnode_device_is_available);
/**
* device_get_child_node_count - return the number of child nodes for device
* @dev: Device to count the child nodes for
* fwnode_get_child_node_count - return the number of child nodes for a given firmware node
* @fwnode: Pointer to the parent firmware node
*
* Return: the number of child nodes for a given device.
* Return: the number of child nodes for a given firmware node.
*/
unsigned int device_get_child_node_count(const struct device *dev)
unsigned int fwnode_get_child_node_count(const struct fwnode_handle *fwnode)
{
struct fwnode_handle *child;
unsigned int count = 0;
device_for_each_child_node(dev, child)
fwnode_for_each_child_node(fwnode, child)
count++;
return count;
}
EXPORT_SYMBOL_GPL(device_get_child_node_count);
EXPORT_SYMBOL_GPL(fwnode_get_child_node_count);
bool device_dma_supported(const struct device *dev)
{
+4
View File
@@ -0,0 +1,4 @@
CONFIG_KUNIT=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_KUNIT_TEST=y
+9 -2
View File
@@ -55,6 +55,13 @@ config LEDS_BRIGHTNESS_HW_CHANGED
See Documentation/ABI/testing/sysfs-class-led for details.
config LEDS_KUNIT_TEST
tristate "KUnit tests for LEDs"
depends on KUNIT && LEDS_CLASS
default KUNIT_ALL_TESTS
help
Say Y here to enable KUnit testing for the LEDs framework.
comment "LED drivers"
config LEDS_88PM860X
@@ -735,7 +742,7 @@ config LEDS_NS2
tristate "LED support for Network Space v2 GPIO LEDs"
depends on LEDS_CLASS
depends on MACH_KIRKWOOD || MACH_ARMADA_370 || COMPILE_TEST
default y
default y if MACH_KIRKWOOD || MACH_ARMADA_370
help
This option enables support for the dual-GPIO LEDs found on the
following LaCie/Seagate boards:
@@ -750,7 +757,7 @@ config LEDS_NETXBIG
depends on LEDS_CLASS
depends on MACH_KIRKWOOD || COMPILE_TEST
depends on OF_GPIO
default y
default MACH_KIRKWOOD
help
This option enables support for LEDs found on the LaCie 2Big
and 5Big Network v2 boards. The LEDs are wired to a CPLD and are
+1
View File
@@ -6,6 +6,7 @@ obj-$(CONFIG_LEDS_CLASS) += led-class.o
obj-$(CONFIG_LEDS_CLASS_FLASH) += led-class-flash.o
obj-$(CONFIG_LEDS_CLASS_MULTICOLOR) += led-class-multicolor.o
obj-$(CONFIG_LEDS_TRIGGERS) += led-triggers.o
obj-$(CONFIG_LEDS_KUNIT_TEST) += led-test.o
# LED Platform Drivers (keep this sorted, M-| sort)
obj-$(CONFIG_LEDS_88PM860X) += leds-88pm860x.o
+4 -2
View File
@@ -450,7 +450,7 @@ static int sso_gpio_get(struct gpio_chip *chip, unsigned int offset)
return !!(reg_val & BIT(offset));
}
static void sso_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
static int sso_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
{
struct sso_led_priv *priv = gpiochip_get_data(chip);
@@ -458,6 +458,8 @@ static void sso_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
if (!priv->gpio.freq)
regmap_update_bits(priv->mmap, SSO_CON0, SSO_CON0_SWU,
SSO_CON0_SWU);
return 0;
}
static int sso_gpio_gc_init(struct device *dev, struct sso_led_priv *priv)
@@ -469,7 +471,7 @@ static int sso_gpio_gc_init(struct device *dev, struct sso_led_priv *priv)
gc->get_direction = sso_gpio_get_dir;
gc->direction_output = sso_gpio_dir_out;
gc->get = sso_gpio_get;
gc->set = sso_gpio_set;
gc->set_rv = sso_gpio_set;
gc->label = "lgm-sso";
gc->base = -1;
+11
View File
@@ -132,4 +132,15 @@ config LEDS_SY7802
This driver can be built as a module, it will be called "leds-sy7802".
config LEDS_TPS6131X
tristate "LED support for TI TPS6131x flash LED driver"
depends on I2C && OF
depends on GPIOLIB
select REGMAP_I2C
help
This option enables support for Texas Instruments TPS61310/TPS61311
flash LED driver.
This driver can be built as a module, it will be called "leds-tps6131x".
endif # LEDS_CLASS_FLASH
+1
View File
@@ -12,3 +12,4 @@ obj-$(CONFIG_LEDS_RT4505) += leds-rt4505.o
obj-$(CONFIG_LEDS_RT8515) += leds-rt8515.o
obj-$(CONFIG_LEDS_SGM3140) += leds-sgm3140.o
obj-$(CONFIG_LEDS_SY7802) += leds-sy7802.o
obj-$(CONFIG_LEDS_TPS6131X) += leds-tps6131x.o
File diff suppressed because it is too large. Load diff
+15
View File
@@ -440,6 +440,21 @@ int led_update_flash_brightness(struct led_classdev_flash *fled_cdev)
}
EXPORT_SYMBOL_GPL(led_update_flash_brightness);
int led_set_flash_duration(struct led_classdev_flash *fled_cdev, u32 duration)
{
struct led_classdev *led_cdev = &fled_cdev->led_cdev;
struct led_flash_setting *s = &fled_cdev->duration;
s->val = duration;
led_clamp_align(s);
if (!(led_cdev->flags & LED_SUSPENDED))
return call_flash_op(fled_cdev, duration_set, s->val);
return 0;
}
EXPORT_SYMBOL_GPL(led_set_flash_duration);
MODULE_AUTHOR("Jacek Anaszewski <j.anaszewski@samsung.com>");
MODULE_DESCRIPTION("LED Flash class interface");
MODULE_LICENSE("GPL v2");
+2 -1
View File
@@ -59,7 +59,8 @@ static ssize_t multi_intensity_store(struct device *dev,
for (i = 0; i < mcled_cdev->num_colors; i++)
mcled_cdev->subled_info[i].intensity = intensity_value[i];
led_set_brightness(led_cdev, led_cdev->brightness);
if (!test_bit(LED_BLINK_SW, &led_cdev->work_flags))
led_set_brightness(led_cdev, led_cdev->brightness);
ret = size;
err_out:
mutex_unlock(&led_cdev->led_access);
+25 -20
View File
@@ -529,6 +529,7 @@ int led_compose_name(struct device *dev, struct led_init_data *init_data,
struct led_properties props = {};
struct fwnode_handle *fwnode = init_data->fwnode;
const char *devicename = init_data->devicename;
int n;
if (!led_classdev_name)
return -EINVAL;
@@ -542,45 +543,49 @@ int led_compose_name(struct device *dev, struct led_init_data *init_data,
* Otherwise the label is prepended with devicename to compose
* the final LED class device name.
*/
if (!devicename) {
strscpy(led_classdev_name, props.label,
LED_MAX_NAME_SIZE);
if (devicename) {
n = snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
devicename, props.label);
} else {
snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
devicename, props.label);
n = snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s", props.label);
}
} else if (props.function || props.color_present) {
char tmp_buf[LED_MAX_NAME_SIZE];
if (props.func_enum_present) {
snprintf(tmp_buf, LED_MAX_NAME_SIZE, "%s:%s-%d",
props.color_present ? led_colors[props.color] : "",
props.function ?: "", props.func_enum);
n = snprintf(tmp_buf, LED_MAX_NAME_SIZE, "%s:%s-%d",
props.color_present ? led_colors[props.color] : "",
props.function ?: "", props.func_enum);
} else {
snprintf(tmp_buf, LED_MAX_NAME_SIZE, "%s:%s",
props.color_present ? led_colors[props.color] : "",
props.function ?: "");
n = snprintf(tmp_buf, LED_MAX_NAME_SIZE, "%s:%s",
props.color_present ? led_colors[props.color] : "",
props.function ?: "");
}
if (init_data->devname_mandatory) {
snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
devicename, tmp_buf);
} else {
strscpy(led_classdev_name, tmp_buf, LED_MAX_NAME_SIZE);
if (n >= LED_MAX_NAME_SIZE)
return -E2BIG;
if (init_data->devname_mandatory) {
n = snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
devicename, tmp_buf);
} else {
n = snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s", tmp_buf);
}
} else if (init_data->default_label) {
if (!devicename) {
dev_err(dev, "Legacy LED naming requires devicename segment");
return -EINVAL;
}
snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
devicename, init_data->default_label);
n = snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
devicename, init_data->default_label);
} else if (is_of_node(fwnode)) {
strscpy(led_classdev_name, to_of_node(fwnode)->name,
LED_MAX_NAME_SIZE);
n = snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s",
to_of_node(fwnode)->name);
} else
return -EINVAL;
if (n >= LED_MAX_NAME_SIZE)
return -E2BIG;
return 0;
}
EXPORT_SYMBOL_GPL(led_compose_name);
+132
View File
@@ -0,0 +1,132 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2025 Google LLC
*
* Author: Lee Jones <lee@kernel.org>
*/
#include <kunit/device.h>
#include <kunit/test.h>
#include <linux/device.h>
#include <linux/leds.h>
#define LED_TEST_POST_REG_BRIGHTNESS 10
struct led_test_ddata {
struct led_classdev cdev;
struct device *dev;
};
static enum led_brightness led_test_brightness_get(struct led_classdev *cdev)
{
return LED_TEST_POST_REG_BRIGHTNESS;
}
static void led_test_class_register(struct kunit *test)
{
struct led_test_ddata *ddata = test->priv;
struct led_classdev *cdev_clash, *cdev = &ddata->cdev;
struct device *dev = ddata->dev;
int ret;
/* Register a LED class device */
cdev->name = "led-test";
cdev->brightness_get = led_test_brightness_get;
cdev->brightness = 0;
ret = devm_led_classdev_register(dev, cdev);
KUNIT_ASSERT_EQ(test, ret, 0);
KUNIT_EXPECT_EQ(test, cdev->max_brightness, LED_FULL);
KUNIT_EXPECT_EQ(test, cdev->brightness, LED_TEST_POST_REG_BRIGHTNESS);
KUNIT_EXPECT_STREQ(test, cdev->dev->kobj.name, "led-test");
/* Register again with the same name - expect it to pass with the LED renamed */
cdev_clash = devm_kmemdup(dev, cdev, sizeof(*cdev), GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cdev_clash);
ret = devm_led_classdev_register(dev, cdev_clash);
KUNIT_ASSERT_EQ(test, ret, 0);
KUNIT_EXPECT_STREQ(test, cdev_clash->dev->kobj.name, "led-test_1");
KUNIT_EXPECT_STREQ(test, cdev_clash->name, "led-test");
/* Enable name conflict rejection and register with the same name again - expect failure */
cdev_clash->flags |= LED_REJECT_NAME_CONFLICT;
ret = devm_led_classdev_register(dev, cdev_clash);
KUNIT_EXPECT_EQ(test, ret, -EEXIST);
}
static void led_test_class_add_lookup_and_get(struct kunit *test)
{
struct led_test_ddata *ddata = test->priv;
struct led_classdev *cdev = &ddata->cdev, *cdev_get;
struct device *dev = ddata->dev;
struct led_lookup_data lookup;
int ret;
/* First, register a LED class device */
cdev->name = "led-test";
ret = devm_led_classdev_register(dev, cdev);
KUNIT_ASSERT_EQ(test, ret, 0);
/* Then make the LED available for lookup */
lookup.provider = cdev->name;
lookup.dev_id = dev_name(dev);
lookup.con_id = "led-test-1";
led_add_lookup(&lookup);
/* Finally, attempt to look it up via the API - imagine this was an orthogonal driver */
cdev_get = devm_led_get(dev, "led-test-1");
KUNIT_ASSERT_FALSE(test, IS_ERR(cdev_get));
KUNIT_EXPECT_STREQ(test, cdev_get->name, cdev->name);
led_remove_lookup(&lookup);
}
static struct kunit_case led_test_cases[] = {
KUNIT_CASE(led_test_class_register),
KUNIT_CASE(led_test_class_add_lookup_and_get),
{ }
};
static int led_test_init(struct kunit *test)
{
struct led_test_ddata *ddata;
struct device *dev;
ddata = kunit_kzalloc(test, sizeof(*ddata), GFP_KERNEL);
if (!ddata)
return -ENOMEM;
test->priv = ddata;
dev = kunit_device_register(test, "led_test");
if (IS_ERR(dev))
return PTR_ERR(dev);
ddata->dev = get_device(dev);
return 0;
}
static void led_test_exit(struct kunit *test)
{
struct led_test_ddata *ddata = test->priv;
if (ddata && ddata->dev)
put_device(ddata->dev);
}
static struct kunit_suite led_test_suite = {
.name = "led",
.init = led_test_init,
.exit = led_test_exit,
.test_cases = led_test_cases,
};
kunit_test_suite(led_test_suite);
MODULE_AUTHOR("Lee Jones <lee@kernel.org>");
MODULE_DESCRIPTION("KUnit tests for the LED framework");
MODULE_LICENSE("GPL");
+13
View File
@@ -54,6 +54,11 @@ ssize_t led_trigger_write(struct file *filp, struct kobject *kobj,
goto unlock;
}
if (sysfs_streq(buf, "default")) {
led_trigger_set_default(led_cdev);
goto unlock;
}
down_read(&triggers_list_lock);
list_for_each_entry(trig, &trigger_list, next_trig) {
if (sysfs_streq(buf, trig->name) && trigger_relevant(led_cdev, trig)) {
@@ -98,6 +103,9 @@ static int led_trigger_format(char *buf, size_t size,
int len = led_trigger_snprintf(buf, size, "%s",
led_cdev->trigger ? "none" : "[none]");
if (led_cdev->default_trigger)
len += led_trigger_snprintf(buf + len, size - len, " default");
list_for_each_entry(trig, &trigger_list, next_trig) {
bool hit;
@@ -281,6 +289,11 @@ void led_trigger_set_default(struct led_classdev *led_cdev)
if (!led_cdev->default_trigger)
return;
if (!strcmp(led_cdev->default_trigger, "none")) {
led_trigger_remove(led_cdev);
return;
}
down_read(&triggers_list_lock);
down_write(&led_cdev->trigger_lock);
list_for_each_entry(trig, &trigger_list, next_trig) {
+3 -16
View File
@@ -60,31 +60,18 @@ static inline struct cros_ec_led_priv *cros_ec_led_cdev_to_priv(struct led_class
union cros_ec_led_cmd_data {
struct ec_params_led_control req;
struct ec_response_led_control resp;
} __packed;
};
static int cros_ec_led_send_cmd(struct cros_ec_device *cros_ec,
union cros_ec_led_cmd_data *arg)
{
int ret;
struct {
struct cros_ec_command msg;
union cros_ec_led_cmd_data data;
} __packed buf = {
.msg = {
.version = 1,
.command = EC_CMD_LED_CONTROL,
.insize = sizeof(arg->resp),
.outsize = sizeof(arg->req),
},
.data.req = arg->req
};
ret = cros_ec_cmd_xfer_status(cros_ec, &buf.msg);
ret = cros_ec_cmd(cros_ec, 1, EC_CMD_LED_CONTROL, &arg->req,
sizeof(arg->req), &arg->resp, sizeof(arg->resp));
if (ret < 0)
return ret;
arg->resp = buf.data.resp;
return 0;
}
+48 -162
View File
@@ -90,8 +90,6 @@
* @led_dev: led class device pointer
* @regmap: Devices register map
* @eeprom_regmap: EEPROM register map
* @enable_gpio: VDDIO/EN gpio to enable communication interface
* @regulator: LED supply regulator pointer
*/
struct lp8860_led {
struct mutex lock;
@@ -99,16 +97,9 @@ struct lp8860_led {
struct led_classdev led_dev;
struct regmap *regmap;
struct regmap *eeprom_regmap;
struct gpio_desc *enable_gpio;
struct regulator *regulator;
};
struct lp8860_eeprom_reg {
uint8_t reg;
uint8_t value;
};
static struct lp8860_eeprom_reg lp8860_eeprom_disp_regs[] = {
static const struct reg_sequence lp8860_eeprom_disp_regs[] = {
{ LP8860_EEPROM_REG_0, 0xed },
{ LP8860_EEPROM_REG_1, 0xdf },
{ LP8860_EEPROM_REG_2, 0xdc },
@@ -136,43 +127,29 @@ static struct lp8860_eeprom_reg lp8860_eeprom_disp_regs[] = {
{ LP8860_EEPROM_REG_24, 0x3E },
};
static int lp8860_unlock_eeprom(struct lp8860_led *led, int lock)
static int lp8860_unlock_eeprom(struct lp8860_led *led)
{
int ret;
mutex_lock(&led->lock);
guard(mutex)(&led->lock);
if (lock == LP8860_UNLOCK_EEPROM) {
ret = regmap_write(led->regmap,
LP8860_EEPROM_UNLOCK,
LP8860_EEPROM_CODE_1);
if (ret) {
dev_err(&led->client->dev, "EEPROM Unlock failed\n");
goto out;
}
ret = regmap_write(led->regmap, LP8860_EEPROM_UNLOCK, LP8860_EEPROM_CODE_1);
if (ret) {
dev_err(&led->client->dev, "EEPROM Unlock failed\n");
return ret;
}
ret = regmap_write(led->regmap,
LP8860_EEPROM_UNLOCK,
LP8860_EEPROM_CODE_2);
if (ret) {
dev_err(&led->client->dev, "EEPROM Unlock failed\n");
goto out;
}
ret = regmap_write(led->regmap,
LP8860_EEPROM_UNLOCK,
LP8860_EEPROM_CODE_3);
if (ret) {
dev_err(&led->client->dev, "EEPROM Unlock failed\n");
goto out;
}
} else {
ret = regmap_write(led->regmap,
LP8860_EEPROM_UNLOCK,
LP8860_LOCK_EEPROM);
ret = regmap_write(led->regmap, LP8860_EEPROM_UNLOCK, LP8860_EEPROM_CODE_2);
if (ret) {
dev_err(&led->client->dev, "EEPROM Unlock failed\n");
return ret;
}
ret = regmap_write(led->regmap, LP8860_EEPROM_UNLOCK, LP8860_EEPROM_CODE_3);
if (ret) {
dev_err(&led->client->dev, "EEPROM Unlock failed\n");
return ret;
}
out:
mutex_unlock(&led->lock);
return ret;
}
@@ -209,47 +186,35 @@ static int lp8860_brightness_set(struct led_classdev *led_cdev,
int disp_brightness = brt_val * 255;
int ret;
mutex_lock(&led->lock);
guard(mutex)(&led->lock);
ret = lp8860_fault_check(led);
if (ret) {
dev_err(&led->client->dev, "Cannot read/clear faults\n");
goto out;
return ret;
}
ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_MSB,
(disp_brightness & 0xff00) >> 8);
if (ret) {
dev_err(&led->client->dev, "Cannot write CL1 MSB\n");
goto out;
return ret;
}
ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_LSB,
disp_brightness & 0xff);
if (ret) {
dev_err(&led->client->dev, "Cannot write CL1 LSB\n");
goto out;
return ret;
}
out:
mutex_unlock(&led->lock);
return ret;
return 0;
}
static int lp8860_init(struct lp8860_led *led)
{
unsigned int read_buf;
int ret, i, reg_count;
if (led->regulator) {
ret = regulator_enable(led->regulator);
if (ret) {
dev_err(&led->client->dev,
"Failed to enable regulator\n");
return ret;
}
}
gpiod_direction_output(led->enable_gpio, 1);
int ret, reg_count;
ret = lp8860_fault_check(led);
if (ret)
@@ -259,24 +224,20 @@ static int lp8860_init(struct lp8860_led *led)
if (ret)
goto out;
ret = lp8860_unlock_eeprom(led, LP8860_UNLOCK_EEPROM);
ret = lp8860_unlock_eeprom(led);
if (ret) {
dev_err(&led->client->dev, "Failed unlocking EEPROM\n");
goto out;
}
reg_count = ARRAY_SIZE(lp8860_eeprom_disp_regs);
for (i = 0; i < reg_count; i++) {
ret = regmap_write(led->eeprom_regmap,
lp8860_eeprom_disp_regs[i].reg,
lp8860_eeprom_disp_regs[i].value);
if (ret) {
dev_err(&led->client->dev, "Failed writing EEPROM\n");
goto out;
}
ret = regmap_multi_reg_write(led->eeprom_regmap, lp8860_eeprom_disp_regs, reg_count);
if (ret) {
dev_err(&led->client->dev, "Failed writing EEPROM\n");
goto out;
}
ret = lp8860_unlock_eeprom(led, LP8860_LOCK_EEPROM);
ret = regmap_write(led->regmap, LP8860_EEPROM_UNLOCK, LP8860_LOCK_EEPROM);
if (ret)
goto out;
@@ -291,74 +252,14 @@ static int lp8860_init(struct lp8860_led *led)
return ret;
out:
if (ret)
gpiod_direction_output(led->enable_gpio, 0);
if (led->regulator) {
ret = regulator_disable(led->regulator);
if (ret)
dev_err(&led->client->dev,
"Failed to disable regulator\n");
}
return ret;
}
static const struct reg_default lp8860_reg_defs[] = {
{ LP8860_DISP_CL1_BRT_MSB, 0x00},
{ LP8860_DISP_CL1_BRT_LSB, 0x00},
{ LP8860_DISP_CL1_CURR_MSB, 0x00},
{ LP8860_DISP_CL1_CURR_LSB, 0x00},
{ LP8860_CL2_BRT_MSB, 0x00},
{ LP8860_CL2_BRT_LSB, 0x00},
{ LP8860_CL2_CURRENT, 0x00},
{ LP8860_CL3_BRT_MSB, 0x00},
{ LP8860_CL3_BRT_LSB, 0x00},
{ LP8860_CL3_CURRENT, 0x00},
{ LP8860_CL4_BRT_MSB, 0x00},
{ LP8860_CL4_BRT_LSB, 0x00},
{ LP8860_CL4_CURRENT, 0x00},
{ LP8860_CONFIG, 0x00},
{ LP8860_FAULT_CLEAR, 0x00},
{ LP8860_EEPROM_CNTRL, 0x80},
{ LP8860_EEPROM_UNLOCK, 0x00},
};
static const struct regmap_config lp8860_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = LP8860_EEPROM_UNLOCK,
.reg_defaults = lp8860_reg_defs,
.num_reg_defaults = ARRAY_SIZE(lp8860_reg_defs),
};
static const struct reg_default lp8860_eeprom_defs[] = {
{ LP8860_EEPROM_REG_0, 0x00 },
{ LP8860_EEPROM_REG_1, 0x00 },
{ LP8860_EEPROM_REG_2, 0x00 },
{ LP8860_EEPROM_REG_3, 0x00 },
{ LP8860_EEPROM_REG_4, 0x00 },
{ LP8860_EEPROM_REG_5, 0x00 },
{ LP8860_EEPROM_REG_6, 0x00 },
{ LP8860_EEPROM_REG_7, 0x00 },
{ LP8860_EEPROM_REG_8, 0x00 },
{ LP8860_EEPROM_REG_9, 0x00 },
{ LP8860_EEPROM_REG_10, 0x00 },
{ LP8860_EEPROM_REG_11, 0x00 },
{ LP8860_EEPROM_REG_12, 0x00 },
{ LP8860_EEPROM_REG_13, 0x00 },
{ LP8860_EEPROM_REG_14, 0x00 },
{ LP8860_EEPROM_REG_15, 0x00 },
{ LP8860_EEPROM_REG_16, 0x00 },
{ LP8860_EEPROM_REG_17, 0x00 },
{ LP8860_EEPROM_REG_18, 0x00 },
{ LP8860_EEPROM_REG_19, 0x00 },
{ LP8860_EEPROM_REG_20, 0x00 },
{ LP8860_EEPROM_REG_21, 0x00 },
{ LP8860_EEPROM_REG_22, 0x00 },
{ LP8860_EEPROM_REG_23, 0x00 },
{ LP8860_EEPROM_REG_24, 0x00 },
};
static const struct regmap_config lp8860_eeprom_regmap_config = {
@@ -366,10 +267,15 @@ static const struct regmap_config lp8860_eeprom_regmap_config = {
.val_bits = 8,
.max_register = LP8860_EEPROM_REG_24,
.reg_defaults = lp8860_eeprom_defs,
.num_reg_defaults = ARRAY_SIZE(lp8860_eeprom_defs),
};
static void lp8860_disable_gpio(void *data)
{
struct gpio_desc *gpio = data;
gpiod_set_value(gpio, 0);
}
static int lp8860_probe(struct i2c_client *client)
{
int ret;
@@ -377,6 +283,7 @@ static int lp8860_probe(struct i2c_client *client)
struct device_node *np = dev_of_node(&client->dev);
struct device_node *child_node;
struct led_init_data init_data = {};
struct gpio_desc *enable_gpio;
led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL);
if (!led)
@@ -386,24 +293,21 @@ static int lp8860_probe(struct i2c_client *client)
if (!child_node)
return -EINVAL;
led->enable_gpio = devm_gpiod_get_optional(&client->dev,
"enable", GPIOD_OUT_LOW);
if (IS_ERR(led->enable_gpio)) {
ret = PTR_ERR(led->enable_gpio);
dev_err(&client->dev, "Failed to get enable gpio: %d\n", ret);
return ret;
}
enable_gpio = devm_gpiod_get_optional(&client->dev, "enable", GPIOD_OUT_LOW);
if (IS_ERR(enable_gpio))
return dev_err_probe(&client->dev, PTR_ERR(enable_gpio),
"Failed to get enable GPIO\n");
devm_add_action_or_reset(&client->dev, lp8860_disable_gpio, enable_gpio);
led->regulator = devm_regulator_get(&client->dev, "vled");
if (IS_ERR(led->regulator))
led->regulator = NULL;
ret = devm_regulator_get_enable_optional(&client->dev, "vled");
if (ret && ret != -ENODEV)
return dev_err_probe(&client->dev, ret,
"Failed to enable vled regulator\n");
led->client = client;
led->led_dev.brightness_set_blocking = lp8860_brightness_set;
mutex_init(&led->lock);
i2c_set_clientdata(client, led);
devm_mutex_init(&client->dev, &led->lock);
led->regmap = devm_regmap_init_i2c(client, &lp8860_regmap_config);
if (IS_ERR(led->regmap)) {
@@ -439,23 +343,6 @@ static int lp8860_probe(struct i2c_client *client)
return 0;
}
static void lp8860_remove(struct i2c_client *client)
{
struct lp8860_led *led = i2c_get_clientdata(client);
int ret;
gpiod_direction_output(led->enable_gpio, 0);
if (led->regulator) {
ret = regulator_disable(led->regulator);
if (ret)
dev_err(&led->client->dev,
"Failed to disable regulator\n");
}
mutex_destroy(&led->lock);
}
static const struct i2c_device_id lp8860_id[] = {
{ "lp8860" },
{ }
@@ -474,7 +361,6 @@ static struct i2c_driver lp8860_driver = {
.of_match_table = of_lp8860_leds_match,
},
.probe = lp8860_probe,
.remove = lp8860_remove,
.id_table = lp8860_id,
};
module_i2c_driver(lp8860_driver);
+6 -5
View File
@@ -318,7 +318,8 @@ static int pca9532_gpio_request_pin(struct gpio_chip *gc, unsigned offset)
return -EBUSY;
}
static void pca9532_gpio_set_value(struct gpio_chip *gc, unsigned offset, int val)
static int pca9532_gpio_set_value(struct gpio_chip *gc, unsigned int offset,
int val)
{
struct pca9532_data *data = gpiochip_get_data(gc);
struct pca9532_led *led = &data->leds[offset];
@@ -329,6 +330,8 @@ static void pca9532_gpio_set_value(struct gpio_chip *gc, unsigned offset, int va
led->state = PCA9532_OFF;
pca9532_setled(led);
return 0;
}
static int pca9532_gpio_get_value(struct gpio_chip *gc, unsigned offset)
@@ -351,9 +354,7 @@ static int pca9532_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
static int pca9532_gpio_direction_output(struct gpio_chip *gc, unsigned offset, int val)
{
pca9532_gpio_set_value(gc, offset, val);
return 0;
return pca9532_gpio_set_value(gc, offset, val);
}
#endif /* CONFIG_LEDS_PCA9532_GPIO */
@@ -472,7 +473,7 @@ static int pca9532_configure(struct i2c_client *client,
data->gpio.label = "gpio-pca9532";
data->gpio.direction_input = pca9532_gpio_direction_input;
data->gpio.direction_output = pca9532_gpio_direction_output;
data->gpio.set = pca9532_gpio_set_value;
data->gpio.set_rv = pca9532_gpio_set_value;
data->gpio.get = pca9532_gpio_get_value;
data->gpio.request = pca9532_gpio_request_pin;
data->gpio.can_sleep = 1;
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