summaryrefslogtreecommitdiffstats
path: root/drivers/leds
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-07-06 20:32:40 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-06 20:32:40 +0200
commit4f5dfdd29065a0d1d0e61d9744e14d1d852518be (patch)
treebda6bd779fcf00fde4b8830e5c3ff81275fc9a73 /drivers/leds
parentMerge tag 'media/v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mc... (diff)
parentleds: lp55xx: make various arrays static const (diff)
downloadlinux-4f5dfdd29065a0d1d0e61d9744e14d1d852518be.tar.xz
linux-4f5dfdd29065a0d1d0e61d9744e14d1d852518be.zip
Merge tag 'leds_for_4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED updates from Jacek Anaszewski: "This time we're removing more than adding: Removed drivers: leds-versatile: - all users of the Versatile LED driver are deleted and replaced with the very generic leds-syscon leds-sead3: - SEAD3 is using the generic leds-syscon & regmap based register-bit-led driver LED class drivers improvements: ledtrig-gpio: - use threaded IRQ, which both simplifies the code because we can drop the workqueue indirection, and it enables using the trigger for GPIOs that work with threaded IRQs themselves - refresh LED state after GPIO change since the new GPIO may have a different state than the old one leds-lp55xx: - make various arrays static const leds-pca963x: - add bindings to invert polarity" * tag 'leds_for_4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds: leds: lp55xx: make various arrays static const leds: Remove SEAD-3 driver leds: trigger: gpio: Use threaded IRQ leds: trigger: gpio: Refresh LED state after GPIO change leds: Delete obsolete Versatile driver leds: pca963x: Add bindings to invert polarity
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/Kconfig18
-rw-r--r--drivers/leds/Makefile2
-rw-r--r--drivers/leds/leds-lp5523.c10
-rw-r--r--drivers/leds/leds-pca963x.c17
-rw-r--r--drivers/leds/leds-sead3.c78
-rw-r--r--drivers/leds/leds-versatile.c110
-rw-r--r--drivers/leds/trigger/ledtrig-gpio.c29
7 files changed, 27 insertions, 237 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 6c2999872090..594b24d410c3 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -590,16 +590,6 @@ config LEDS_KTD2692
Say Y to enable this driver.
-config LEDS_SEAD3
- tristate "LED support for the MIPS SEAD 3 board"
- depends on LEDS_CLASS && MIPS_SEAD3
- help
- Say Y here to include support for the FLED and PLED LEDs on SEAD3 eval
- boards.
-
- This driver can also be built as a module. If so the module
- will be called leds-sead3.
-
config LEDS_IS31FL319X
tristate "LED Support for ISSI IS31FL319x I2C LED controller family"
depends on LEDS_CLASS && I2C && OF
@@ -651,14 +641,6 @@ config LEDS_SYSCON
devices. This will only work with device tree enabled
devices.
-config LEDS_VERSATILE
- tristate "LED support for the ARM Versatile and RealView"
- depends on ARCH_REALVIEW || ARCH_VERSATILE
- depends on LEDS_CLASS
- help
- This option enabled support for the LEDs on the ARM Versatile
- and RealView boards. Say Y to enabled these.
-
config LEDS_PM8058
tristate "LED Support for the Qualcomm PM8058 PMIC"
depends on MFD_PM8XXX
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 45f133962ed8..909dae62ba05 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -62,11 +62,9 @@ obj-$(CONFIG_LEDS_MAX8997) += leds-max8997.o
obj-$(CONFIG_LEDS_LM355x) += leds-lm355x.o
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-$(CONFIG_LEDS_KTD2692) += leds-ktd2692.o
obj-$(CONFIG_LEDS_POWERNV) += leds-powernv.o
-obj-$(CONFIG_LEDS_SEAD3) += leds-sead3.o
obj-$(CONFIG_LEDS_IS31FL319X) += leds-is31fl319x.o
obj-$(CONFIG_LEDS_IS31FL32XX) += leds-is31fl32xx.o
obj-$(CONFIG_LEDS_PM8058) += leds-pm8058.o
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index e9ba8cd32d66..924e50aefb00 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -168,13 +168,13 @@ static int lp5523_post_init_device(struct lp55xx_chip *chip)
static void lp5523_load_engine(struct lp55xx_chip *chip)
{
enum lp55xx_engine_index idx = chip->engine_idx;
- u8 mask[] = {
+ static const u8 mask[] = {
[LP55XX_ENGINE_1] = LP5523_MODE_ENG1_M,
[LP55XX_ENGINE_2] = LP5523_MODE_ENG2_M,
[LP55XX_ENGINE_3] = LP5523_MODE_ENG3_M,
};
- u8 val[] = {
+ static const u8 val[] = {
[LP55XX_ENGINE_1] = LP5523_LOAD_ENG1,
[LP55XX_ENGINE_2] = LP5523_LOAD_ENG2,
[LP55XX_ENGINE_3] = LP5523_LOAD_ENG3,
@@ -188,7 +188,7 @@ static void lp5523_load_engine(struct lp55xx_chip *chip)
static void lp5523_load_engine_and_select_page(struct lp55xx_chip *chip)
{
enum lp55xx_engine_index idx = chip->engine_idx;
- u8 page_sel[] = {
+ static const u8 page_sel[] = {
[LP55XX_ENGINE_1] = LP5523_PAGE_ENG1,
[LP55XX_ENGINE_2] = LP5523_PAGE_ENG2,
[LP55XX_ENGINE_3] = LP5523_PAGE_ENG3,
@@ -208,7 +208,7 @@ static void lp5523_stop_all_engines(struct lp55xx_chip *chip)
static void lp5523_stop_engine(struct lp55xx_chip *chip)
{
enum lp55xx_engine_index idx = chip->engine_idx;
- u8 mask[] = {
+ static const u8 mask[] = {
[LP55XX_ENGINE_1] = LP5523_MODE_ENG1_M,
[LP55XX_ENGINE_2] = LP5523_MODE_ENG2_M,
[LP55XX_ENGINE_3] = LP5523_MODE_ENG3_M,
@@ -505,7 +505,7 @@ static int lp5523_load_mux(struct lp55xx_chip *chip, u16 mux, int nr)
{
struct lp55xx_engine *engine = &chip->engines[nr - 1];
int ret;
- u8 mux_page[] = {
+ static const u8 mux_page[] = {
[LP55XX_ENGINE_1] = LP5523_PAGE_MUX1,
[LP55XX_ENGINE_2] = LP5523_PAGE_MUX2,
[LP55XX_ENGINE_3] = LP5523_PAGE_MUX3,
diff --git a/drivers/leds/leds-pca963x.c b/drivers/leds/leds-pca963x.c
index ded1e4dac36a..3bf9a1271819 100644
--- a/drivers/leds/leds-pca963x.c
+++ b/drivers/leds/leds-pca963x.c
@@ -342,6 +342,12 @@ pca963x_dt_init(struct i2c_client *client, struct pca963x_chipdef *chip)
if (of_property_read_u32(np, "nxp,period-scale", &chip->scaling))
chip->scaling = 1000;
+ /* default to non-inverted output, unless inverted is specified */
+ if (of_property_read_bool(np, "nxp,inverted-out"))
+ pdata->dir = PCA963X_INVERTED;
+ else
+ pdata->dir = PCA963X_NORMAL;
+
return pdata;
}
@@ -452,11 +458,18 @@ static int pca963x_probe(struct i2c_client *client,
i2c_smbus_write_byte_data(client, PCA963X_MODE1, BIT(4));
if (pdata) {
+ u8 mode2 = i2c_smbus_read_byte_data(pca963x->chip->client,
+ PCA963X_MODE2);
/* Configure output: open-drain or totem pole (push-pull) */
if (pdata->outdrv == PCA963X_OPEN_DRAIN)
- i2c_smbus_write_byte_data(client, PCA963X_MODE2, 0x01);
+ mode2 |= 0x01;
else
- i2c_smbus_write_byte_data(client, PCA963X_MODE2, 0x05);
+ mode2 |= 0x05;
+ /* Configure direction: normal or inverted */
+ if (pdata->dir == PCA963X_INVERTED)
+ mode2 |= 0x10;
+ i2c_smbus_write_byte_data(pca963x->chip->client, PCA963X_MODE2,
+ mode2);
}
return 0;
diff --git a/drivers/leds/leds-sead3.c b/drivers/leds/leds-sead3.c
deleted file mode 100644
index eb97a3271bb3..000000000000
--- a/drivers/leds/leds-sead3.c
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
- * Copyright (C) 2015 Imagination Technologies, Inc.
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/leds.h>
-#include <linux/err.h>
-#include <linux/io.h>
-
-#include <asm/mips-boards/sead3-addr.h>
-
-static void sead3_pled_set(struct led_classdev *led_cdev,
- enum led_brightness value)
-{
- writel(value, (void __iomem *)SEAD3_CPLD_P_LED);
-}
-
-static void sead3_fled_set(struct led_classdev *led_cdev,
- enum led_brightness value)
-{
- writel(value, (void __iomem *)SEAD3_CPLD_F_LED);
-}
-
-static struct led_classdev sead3_pled = {
- .name = "sead3::pled",
- .brightness_set = sead3_pled_set,
- .flags = LED_CORE_SUSPENDRESUME,
-};
-
-static struct led_classdev sead3_fled = {
- .name = "sead3::fled",
- .brightness_set = sead3_fled_set,
- .flags = LED_CORE_SUSPENDRESUME,
-};
-
-static int sead3_led_probe(struct platform_device *pdev)
-{
- int ret;
-
- ret = led_classdev_register(&pdev->dev, &sead3_pled);
- if (ret < 0)
- return ret;
-
- ret = led_classdev_register(&pdev->dev, &sead3_fled);
- if (ret < 0)
- led_classdev_unregister(&sead3_pled);
-
- return ret;
-}
-
-static int sead3_led_remove(struct platform_device *pdev)
-{
- led_classdev_unregister(&sead3_pled);
- led_classdev_unregister(&sead3_fled);
-
- return 0;
-}
-
-static struct platform_driver sead3_led_driver = {
- .probe = sead3_led_probe,
- .remove = sead3_led_remove,
- .driver = {
- .name = "sead3-led",
- },
-};
-
-module_platform_driver(sead3_led_driver);
-
-MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>");
-MODULE_DESCRIPTION("SEAD3 LED driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/leds/leds-versatile.c b/drivers/leds/leds-versatile.c
deleted file mode 100644
index 80553022d661..000000000000
--- a/drivers/leds/leds-versatile.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * Driver for the 8 user LEDs found on the RealViews and Versatiles
- * Based on DaVinci's DM365 board code
- *
- * License terms: GNU General Public License (GPL) version 2
- * Author: Linus Walleij <triad@df.lth.se>
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/leds.h>
-#include <linux/platform_device.h>
-
-struct versatile_led {
- void __iomem *base;
- struct led_classdev cdev;
- u8 mask;
-};
-
-/*
- * The triggers lines up below will only be used if the
- * LED triggers are compiled in.
- */
-static const struct {
- const char *name;
- const char *trigger;
-} versatile_leds[] = {
- { "versatile:0", "heartbeat", },
- { "versatile:1", "mmc0", },
- { "versatile:2", "cpu0" },
- { "versatile:3", "cpu1" },
- { "versatile:4", "cpu2" },
- { "versatile:5", "cpu3" },
- { "versatile:6", },
- { "versatile:7", },
-};
-
-static void versatile_led_set(struct led_classdev *cdev,
- enum led_brightness b)
-{
- struct versatile_led *led = container_of(cdev,
- struct versatile_led, cdev);
- u32 reg = readl(led->base);
-
- if (b != LED_OFF)
- reg |= led->mask;
- else
- reg &= ~led->mask;
- writel(reg, led->base);
-}
-
-static enum led_brightness versatile_led_get(struct led_classdev *cdev)
-{
- struct versatile_led *led = container_of(cdev,
- struct versatile_led, cdev);
- u32 reg = readl(led->base);
-
- return (reg & led->mask) ? LED_FULL : LED_OFF;
-}
-
-static int versatile_leds_probe(struct platform_device *dev)
-{
- int i;
- struct resource *res;
- void __iomem *base;
-
- res = platform_get_resource(dev, IORESOURCE_MEM, 0);
- base = devm_ioremap_resource(&dev->dev, res);
- if (IS_ERR(base))
- return PTR_ERR(base);
-
- /* All off */
- writel(0, base);
- for (i = 0; i < ARRAY_SIZE(versatile_leds); i++) {
- struct versatile_led *led;
-
- led = kzalloc(sizeof(*led), GFP_KERNEL);
- if (!led)
- break;
-
- led->base = base;
- led->cdev.name = versatile_leds[i].name;
- led->cdev.brightness_set = versatile_led_set;
- led->cdev.brightness_get = versatile_led_get;
- led->cdev.default_trigger = versatile_leds[i].trigger;
- led->mask = BIT(i);
-
- if (led_classdev_register(NULL, &led->cdev) < 0) {
- kfree(led);
- break;
- }
- }
-
- return 0;
-}
-
-static struct platform_driver versatile_leds_driver = {
- .driver = {
- .name = "versatile-leds",
- },
- .probe = versatile_leds_probe,
-};
-
-module_platform_driver(versatile_leds_driver);
-
-MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
-MODULE_DESCRIPTION("ARM Versatile LED driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/leds/trigger/ledtrig-gpio.c b/drivers/leds/trigger/ledtrig-gpio.c
index 51288a45fbcb..8891e88d54dd 100644
--- a/drivers/leds/trigger/ledtrig-gpio.c
+++ b/drivers/leds/trigger/ledtrig-gpio.c
@@ -14,14 +14,12 @@
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
-#include <linux/workqueue.h>
#include <linux/leds.h>
#include <linux/slab.h>
#include "../leds.h"
struct gpio_trig_data {
struct led_classdev *led;
- struct work_struct work;
unsigned desired_brightness; /* desired brightness when led is on */
unsigned inverted; /* true when gpio is inverted */
@@ -32,22 +30,8 @@ static irqreturn_t gpio_trig_irq(int irq, void *_led)
{
struct led_classdev *led = _led;
struct gpio_trig_data *gpio_data = led->trigger_data;
-
- /* just schedule_work since gpio_get_value can sleep */
- schedule_work(&gpio_data->work);
-
- return IRQ_HANDLED;
-};
-
-static void gpio_trig_work(struct work_struct *work)
-{
- struct gpio_trig_data *gpio_data = container_of(work,
- struct gpio_trig_data, work);
int tmp;
- if (!gpio_data->gpio)
- return;
-
tmp = gpio_get_value_cansleep(gpio_data->gpio);
if (gpio_data->inverted)
tmp = !tmp;
@@ -61,6 +45,8 @@ static void gpio_trig_work(struct work_struct *work)
} else {
led_set_brightness_nosleep(gpio_data->led, LED_OFF);
}
+
+ return IRQ_HANDLED;
}
static ssize_t gpio_trig_brightness_show(struct device *dev,
@@ -120,7 +106,7 @@ static ssize_t gpio_trig_inverted_store(struct device *dev,
gpio_data->inverted = inverted;
/* After inverting, we need to update the LED. */
- schedule_work(&gpio_data->work);
+ gpio_trig_irq(0, led);
return n;
}
@@ -147,7 +133,6 @@ static ssize_t gpio_trig_gpio_store(struct device *dev,
ret = sscanf(buf, "%u", &gpio);
if (ret < 1) {
dev_err(dev, "couldn't read gpio number\n");
- flush_work(&gpio_data->work);
return -EINVAL;
}
@@ -161,8 +146,8 @@ static ssize_t gpio_trig_gpio_store(struct device *dev,
return n;
}
- ret = request_irq(gpio_to_irq(gpio), gpio_trig_irq,
- IRQF_SHARED | IRQF_TRIGGER_RISING
+ ret = request_threaded_irq(gpio_to_irq(gpio), NULL, gpio_trig_irq,
+ IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_RISING
| IRQF_TRIGGER_FALLING, "ledtrig-gpio", led);
if (ret) {
dev_err(dev, "request_irq failed with error %d\n", ret);
@@ -170,6 +155,8 @@ static ssize_t gpio_trig_gpio_store(struct device *dev,
if (gpio_data->gpio != 0)
free_irq(gpio_to_irq(gpio_data->gpio), led);
gpio_data->gpio = gpio;
+ /* After changing the GPIO, we need to update the LED. */
+ gpio_trig_irq(0, led);
}
return ret ? ret : n;
@@ -199,7 +186,6 @@ static void gpio_trig_activate(struct led_classdev *led)
gpio_data->led = led;
led->trigger_data = gpio_data;
- INIT_WORK(&gpio_data->work, gpio_trig_work);
led->activated = true;
return;
@@ -222,7 +208,6 @@ static void gpio_trig_deactivate(struct led_classdev *led)
device_remove_file(led->dev, &dev_attr_gpio);
device_remove_file(led->dev, &dev_attr_inverted);
device_remove_file(led->dev, &dev_attr_desired_brightness);
- flush_work(&gpio_data->work);
if (gpio_data->gpio != 0)
free_irq(gpio_to_irq(gpio_data->gpio), led);
kfree(gpio_data);