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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-26 10:50:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-26 10:50:47 -0700
commitcce1d9f23213f3a8a43b6038df84a665aa8d8612 (patch)
tree0ef75bc1641f7202763591a91fc6030898470f7b
parentd910fc786014ac3fb72f837c329c112e0c7a9aea (diff)
parentf16a5dba01ed942f427f56b0d1128251721275a5 (diff)
downloadlinux-linaro-cce1d9f23213f3a8a43b6038df84a665aa8d8612.tar.gz
Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds: leds: move leds-clevo-mail's probe function to .devinit.text leds: Fix indentation in LEDS_LP3944 Kconfig entry leds: Fix LED names leds: Fix leds-pca9532 whitespace issues leds: fix coding style in worker thread code for ledtrig-gpio. leds: gpio-leds: fix typographics fault leds: Add WM831x status LED driver
-rw-r--r--drivers/leds/Kconfig13
-rw-r--r--drivers/leds/Makefile1
-rw-r--r--drivers/leds/leds-clevo-mail.c2
-rw-r--r--drivers/leds/leds-cobalt-qube.c2
-rw-r--r--drivers/leds/leds-cobalt-raq.c4
-rw-r--r--drivers/leds/leds-gpio.c2
-rw-r--r--drivers/leds/leds-pca9532.c12
-rw-r--r--drivers/leds/leds-wm831x-status.c341
-rw-r--r--drivers/leds/ledtrig-gpio.c32
-rw-r--r--drivers/macintosh/via-pmu-led.c2
-rw-r--r--include/linux/mfd/wm831x/status.h34
11 files changed, 414 insertions, 31 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 7c8e7122aaa..e4f599f20e3 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -150,9 +150,9 @@ config LEDS_LP3944
tristate "LED Support for N.S. LP3944 (Fun Light) I2C chip"
depends on LEDS_CLASS && I2C
help
- This option enables support for LEDs connected to the National
- Semiconductor LP3944 Lighting Management Unit (LMU) also known as
- Fun Light Chip.
+ This option enables support for LEDs connected to the National
+ Semiconductor LP3944 Lighting Management Unit (LMU) also known as
+ Fun Light Chip.
To compile this driver as a module, choose M here: the
module will be called leds-lp3944.
@@ -195,6 +195,13 @@ config LEDS_PCA955X
LED driver chips accessed via the I2C bus. Supported
devices include PCA9550, PCA9551, PCA9552, and PCA9553.
+config LEDS_WM831X_STATUS
+ tristate "LED support for status LEDs on WM831x PMICs"
+ depends on LEDS_CLASS && MFD_WM831X
+ help
+ This option enables support for the status LEDs of the WM831x
+ series of PMICs.
+
config LEDS_WM8350
tristate "LED Support for WM8350 AudioPlus PMIC"
depends on LEDS_CLASS && MFD_WM8350
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index e8cdcf77a4c..46d72704d60 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -26,6 +26,7 @@ obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
obj-$(CONFIG_LEDS_PCA955X) += leds-pca955x.o
obj-$(CONFIG_LEDS_DA903X) += leds-da903x.o
+obj-$(CONFIG_LEDS_WM831X_STATUS) += leds-wm831x-status.o
obj-$(CONFIG_LEDS_WM8350) += leds-wm8350.o
obj-$(CONFIG_LEDS_PWM) += leds-pwm.o
diff --git a/drivers/leds/leds-clevo-mail.c b/drivers/leds/leds-clevo-mail.c
index f2242db5401..a498135a4e8 100644
--- a/drivers/leds/leds-clevo-mail.c
+++ b/drivers/leds/leds-clevo-mail.c
@@ -153,7 +153,7 @@ static struct led_classdev clevo_mail_led = {
.flags = LED_CORE_SUSPENDRESUME,
};
-static int __init clevo_mail_led_probe(struct platform_device *pdev)
+static int __devinit clevo_mail_led_probe(struct platform_device *pdev)
{
return led_classdev_register(&pdev->dev, &clevo_mail_led);
}
diff --git a/drivers/leds/leds-cobalt-qube.c b/drivers/leds/leds-cobalt-qube.c
index 059aa2924b1..8816806accd 100644
--- a/drivers/leds/leds-cobalt-qube.c
+++ b/drivers/leds/leds-cobalt-qube.c
@@ -28,7 +28,7 @@ static void qube_front_led_set(struct led_classdev *led_cdev,
}
static struct led_classdev qube_front_led = {
- .name = "qube-front",
+ .name = "qube::front",
.brightness = LED_FULL,
.brightness_set = qube_front_led_set,
.default_trigger = "ide-disk",
diff --git a/drivers/leds/leds-cobalt-raq.c b/drivers/leds/leds-cobalt-raq.c
index 5f1ce810815..defc212105f 100644
--- a/drivers/leds/leds-cobalt-raq.c
+++ b/drivers/leds/leds-cobalt-raq.c
@@ -49,7 +49,7 @@ static void raq_web_led_set(struct led_classdev *led_cdev,
}
static struct led_classdev raq_web_led = {
- .name = "raq-web",
+ .name = "raq::web",
.brightness_set = raq_web_led_set,
};
@@ -70,7 +70,7 @@ static void raq_power_off_led_set(struct led_classdev *led_cdev,
}
static struct led_classdev raq_power_off_led = {
- .name = "raq-power-off",
+ .name = "raq::power-off",
.brightness_set = raq_power_off_led_set,
.default_trigger = "power-off",
};
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 6b06638eb5b..7467980b8cf 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -80,7 +80,7 @@ static int __devinit create_gpio_led(const struct gpio_led *template,
/* skip leds that aren't available */
if (!gpio_is_valid(template->gpio)) {
- printk(KERN_INFO "Skipping unavilable LED gpio %d (%s)\n",
+ printk(KERN_INFO "Skipping unavailable LED gpio %d (%s)\n",
template->gpio, template->name);
return 0;
}
diff --git a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c
index dba8921240f..708a8017c21 100644
--- a/drivers/leds/leds-pca9532.c
+++ b/drivers/leds/leds-pca9532.c
@@ -34,7 +34,7 @@ struct pca9532_data {
struct i2c_client *client;
struct pca9532_led leds[16];
struct mutex update_lock;
- struct input_dev *idev;
+ struct input_dev *idev;
struct work_struct work;
u8 pwm[2];
u8 psc[2];
@@ -53,9 +53,9 @@ MODULE_DEVICE_TABLE(i2c, pca9532_id);
static struct i2c_driver pca9532_driver = {
.driver = {
- .name = "pca9532",
+ .name = "pca9532",
},
- .probe = pca9532_probe,
+ .probe = pca9532_probe,
.remove = pca9532_remove,
.id_table = pca9532_id,
};
@@ -149,7 +149,7 @@ static int pca9532_set_blink(struct led_classdev *led_cdev,
if (*delay_on == 0 && *delay_off == 0) {
/* led subsystem ask us for a blink rate */
- *delay_on = 1000;
+ *delay_on = 1000;
*delay_off = 1000;
}
if (*delay_on != *delay_off || *delay_on > 1690 || *delay_on < 6)
@@ -227,7 +227,7 @@ static int pca9532_configure(struct i2c_client *client,
break;
case PCA9532_TYPE_LED:
led->state = pled->state;
- led->name = pled->name;
+ led->name = pled->name;
led->ldev.name = led->name;
led->ldev.brightness = LED_OFF;
led->ldev.brightness_set = pca9532_set_brightness;
@@ -254,7 +254,7 @@ static int pca9532_configure(struct i2c_client *client,
data->idev->name = pled->name;
data->idev->phys = "i2c/pca9532";
data->idev->id.bustype = BUS_HOST;
- data->idev->id.vendor = 0x001f;
+ data->idev->id.vendor = 0x001f;
data->idev->id.product = 0x0001;
data->idev->id.version = 0x0100;
data->idev->evbit[0] = BIT_MASK(EV_SND);
diff --git a/drivers/leds/leds-wm831x-status.c b/drivers/leds/leds-wm831x-status.c
new file mode 100644
index 00000000000..c586d05e336
--- /dev/null
+++ b/drivers/leds/leds-wm831x-status.c
@@ -0,0 +1,341 @@
+/*
+ * LED driver for WM831x status LEDs
+ *
+ * Copyright(C) 2009 Wolfson Microelectronics PLC.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/pdata.h>
+#include <linux/mfd/wm831x/status.h>
+
+
+struct wm831x_status {
+ struct led_classdev cdev;
+ struct wm831x *wm831x;
+ struct work_struct work;
+ struct mutex mutex;
+
+ spinlock_t value_lock;
+ int reg; /* Control register */
+ int reg_val; /* Control register value */
+
+ int blink;
+ int blink_time;
+ int blink_cyc;
+ int src;
+ enum led_brightness brightness;
+};
+
+#define to_wm831x_status(led_cdev) \
+ container_of(led_cdev, struct wm831x_status, cdev)
+
+static void wm831x_status_work(struct work_struct *work)
+{
+ struct wm831x_status *led = container_of(work, struct wm831x_status,
+ work);
+ unsigned long flags;
+
+ mutex_lock(&led->mutex);
+
+ led->reg_val &= ~(WM831X_LED_SRC_MASK | WM831X_LED_MODE_MASK |
+ WM831X_LED_DUTY_CYC_MASK | WM831X_LED_DUR_MASK);
+
+ spin_lock_irqsave(&led->value_lock, flags);
+
+ led->reg_val |= led->src << WM831X_LED_SRC_SHIFT;
+ if (led->blink) {
+ led->reg_val |= 2 << WM831X_LED_MODE_SHIFT;
+ led->reg_val |= led->blink_time << WM831X_LED_DUR_SHIFT;
+ led->reg_val |= led->blink_cyc;
+ } else {
+ if (led->brightness != LED_OFF)
+ led->reg_val |= 1 << WM831X_LED_MODE_SHIFT;
+ }
+
+ spin_unlock_irqrestore(&led->value_lock, flags);
+
+ wm831x_reg_write(led->wm831x, led->reg, led->reg_val);
+
+ mutex_unlock(&led->mutex);
+}
+
+static void wm831x_status_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct wm831x_status *led = to_wm831x_status(led_cdev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&led->value_lock, flags);
+ led->brightness = value;
+ if (value == LED_OFF)
+ led->blink = 0;
+ schedule_work(&led->work);
+ spin_unlock_irqrestore(&led->value_lock, flags);
+}
+
+static int wm831x_status_blink_set(struct led_classdev *led_cdev,
+ unsigned long *delay_on,
+ unsigned long *delay_off)
+{
+ struct wm831x_status *led = to_wm831x_status(led_cdev);
+ unsigned long flags;
+ int ret = 0;
+
+ /* Pick some defaults if we've not been given times */
+ if (*delay_on == 0 && *delay_off == 0) {
+ *delay_on = 250;
+ *delay_off = 250;
+ }
+
+ spin_lock_irqsave(&led->value_lock, flags);
+
+ /* We only have a limited selection of settings, see if we can
+ * support the configuration we're being given */
+ switch (*delay_on) {
+ case 1000:
+ led->blink_time = 0;
+ break;
+ case 250:
+ led->blink_time = 1;
+ break;
+ case 125:
+ led->blink_time = 2;
+ break;
+ case 62:
+ case 63:
+ /* Actually 62.5ms */
+ led->blink_time = 3;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ if (ret == 0) {
+ switch (*delay_off / *delay_on) {
+ case 1:
+ led->blink_cyc = 0;
+ break;
+ case 3:
+ led->blink_cyc = 1;
+ break;
+ case 4:
+ led->blink_cyc = 2;
+ break;
+ case 8:
+ led->blink_cyc = 3;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ }
+
+ if (ret == 0)
+ led->blink = 1;
+ else
+ led->blink = 0;
+
+ /* Always update; if we fail turn off blinking since we expect
+ * a software fallback. */
+ schedule_work(&led->work);
+
+ spin_unlock_irqrestore(&led->value_lock, flags);
+
+ return ret;
+}
+
+static const char *led_src_texts[] = {
+ "otp",
+ "power",
+ "charger",
+ "soft",
+};
+
+static ssize_t wm831x_status_src_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
+ struct wm831x_status *led = to_wm831x_status(led_cdev);
+ int i;
+ ssize_t ret = 0;
+
+ mutex_lock(&led->mutex);
+
+ for (i = 0; i < ARRAY_SIZE(led_src_texts); i++)
+ if (i == led->src)
+ ret += sprintf(&buf[ret], "[%s] ", led_src_texts[i]);
+ else
+ ret += sprintf(&buf[ret], "%s ", led_src_texts[i]);
+
+ mutex_unlock(&led->mutex);
+
+ ret += sprintf(&buf[ret], "\n");
+
+ return ret;
+}
+
+static ssize_t wm831x_status_src_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
+ struct wm831x_status *led = to_wm831x_status(led_cdev);
+ char name[20];
+ int i;
+ size_t len;
+
+ name[sizeof(name) - 1] = '\0';
+ strncpy(name, buf, sizeof(name) - 1);
+ len = strlen(name);
+
+ if (len && name[len - 1] == '\n')
+ name[len - 1] = '\0';
+
+ for (i = 0; i < ARRAY_SIZE(led_src_texts); i++) {
+ if (!strcmp(name, led_src_texts[i])) {
+ mutex_lock(&led->mutex);
+
+ led->src = i;
+ schedule_work(&led->work);
+
+ mutex_unlock(&led->mutex);
+ }
+ }
+
+ return size;
+}
+
+static DEVICE_ATTR(src, 0644, wm831x_status_src_show, wm831x_status_src_store);
+
+static int wm831x_status_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *chip_pdata;
+ struct wm831x_status_pdata pdata;
+ struct wm831x_status *drvdata;
+ struct resource *res;
+ int id = pdev->id % ARRAY_SIZE(chip_pdata->status);
+ int ret;
+
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "No I/O resource\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ drvdata = kzalloc(sizeof(struct wm831x_status), GFP_KERNEL);
+ if (!drvdata)
+ return -ENOMEM;
+ dev_set_drvdata(&pdev->dev, drvdata);
+
+ drvdata->wm831x = wm831x;
+ drvdata->reg = res->start;
+
+ if (wm831x->dev->platform_data)
+ chip_pdata = wm831x->dev->platform_data;
+ else
+ chip_pdata = NULL;
+
+ memset(&pdata, 0, sizeof(pdata));
+ if (chip_pdata && chip_pdata->status[id])
+ memcpy(&pdata, chip_pdata->status[id], sizeof(pdata));
+ else
+ pdata.name = dev_name(&pdev->dev);
+
+ mutex_init(&drvdata->mutex);
+ INIT_WORK(&drvdata->work, wm831x_status_work);
+ spin_lock_init(&drvdata->value_lock);
+
+ /* We cache the configuration register and read startup values
+ * from it. */
+ drvdata->reg_val = wm831x_reg_read(wm831x, drvdata->reg);
+
+ if (drvdata->reg_val & WM831X_LED_MODE_MASK)
+ drvdata->brightness = LED_FULL;
+ else
+ drvdata->brightness = LED_OFF;
+
+ /* Set a default source if configured, otherwise leave the
+ * current hardware setting.
+ */
+ if (pdata.default_src == WM831X_STATUS_PRESERVE) {
+ drvdata->src = drvdata->reg_val;
+ drvdata->src &= WM831X_LED_SRC_MASK;
+ drvdata->src >>= WM831X_LED_SRC_SHIFT;
+ } else {
+ drvdata->src = pdata.default_src - 1;
+ }
+
+ drvdata->cdev.name = pdata.name;
+ drvdata->cdev.default_trigger = pdata.default_trigger;
+ drvdata->cdev.brightness_set = wm831x_status_set;
+ drvdata->cdev.blink_set = wm831x_status_blink_set;
+
+ ret = led_classdev_register(wm831x->dev, &drvdata->cdev);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to register LED: %d\n", ret);
+ goto err_led;
+ }
+
+ ret = device_create_file(drvdata->cdev.dev, &dev_attr_src);
+ if (ret != 0)
+ dev_err(&pdev->dev,
+ "No source control for LED: %d\n", ret);
+
+ return 0;
+
+err_led:
+ led_classdev_unregister(&drvdata->cdev);
+ kfree(drvdata);
+err:
+ return ret;
+}
+
+static int wm831x_status_remove(struct platform_device *pdev)
+{
+ struct wm831x_status *drvdata = platform_get_drvdata(pdev);
+
+ device_remove_file(drvdata->cdev.dev, &dev_attr_src);
+ led_classdev_unregister(&drvdata->cdev);
+ kfree(drvdata);
+
+ return 0;
+}
+
+static struct platform_driver wm831x_status_driver = {
+ .driver = {
+ .name = "wm831x-status",
+ .owner = THIS_MODULE,
+ },
+ .probe = wm831x_status_probe,
+ .remove = wm831x_status_remove,
+};
+
+static int __devinit wm831x_status_init(void)
+{
+ return platform_driver_register(&wm831x_status_driver);
+}
+module_init(wm831x_status_init);
+
+static void wm831x_status_exit(void)
+{
+ platform_driver_unregister(&wm831x_status_driver);
+}
+module_exit(wm831x_status_exit);
+
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_DESCRIPTION("WM831x status LED driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:wm831x-status");
diff --git a/drivers/leds/ledtrig-gpio.c b/drivers/leds/ledtrig-gpio.c
index 1bc5db4ece0..f5913372d69 100644
--- a/drivers/leds/ledtrig-gpio.c
+++ b/drivers/leds/ledtrig-gpio.c
@@ -44,22 +44,22 @@ static void gpio_trig_work(struct work_struct *work)
struct gpio_trig_data, work);
int tmp;
- if (!gpio_data->gpio)
- return;
-
- tmp = gpio_get_value(gpio_data->gpio);
- if (gpio_data->inverted)
- tmp = !tmp;
-
- if (tmp) {
- if (gpio_data->desired_brightness)
- led_set_brightness(gpio_data->led,
- gpio_data->desired_brightness);
- else
- led_set_brightness(gpio_data->led, LED_FULL);
- } else {
- led_set_brightness(gpio_data->led, LED_OFF);
- }
+ if (!gpio_data->gpio)
+ return;
+
+ tmp = gpio_get_value(gpio_data->gpio);
+ if (gpio_data->inverted)
+ tmp = !tmp;
+
+ if (tmp) {
+ if (gpio_data->desired_brightness)
+ led_set_brightness(gpio_data->led,
+ gpio_data->desired_brightness);
+ else
+ led_set_brightness(gpio_data->led, LED_FULL);
+ } else {
+ led_set_brightness(gpio_data->led, LED_OFF);
+ }
}
static ssize_t gpio_trig_brightness_show(struct device *dev,
diff --git a/drivers/macintosh/via-pmu-led.c b/drivers/macintosh/via-pmu-led.c
index 55ad9567138..d242976bcfe 100644
--- a/drivers/macintosh/via-pmu-led.c
+++ b/drivers/macintosh/via-pmu-led.c
@@ -72,7 +72,7 @@ static void pmu_led_set(struct led_classdev *led_cdev,
}
static struct led_classdev pmu_led = {
- .name = "pmu-front-led",
+ .name = "pmu-led::front",
#ifdef CONFIG_ADB_PMU_LED_IDE
.default_trigger = "ide-disk",
#endif
diff --git a/include/linux/mfd/wm831x/status.h b/include/linux/mfd/wm831x/status.h
new file mode 100644
index 00000000000..6bc090d0e3a
--- /dev/null
+++ b/include/linux/mfd/wm831x/status.h
@@ -0,0 +1,34 @@
+/*
+ * include/linux/mfd/wm831x/status.h -- Status LEDs for WM831x
+ *
+ * Copyright 2009 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#ifndef __MFD_WM831X_STATUS_H__
+#define __MFD_WM831X_STATUS_H__
+
+#define WM831X_LED_SRC_MASK 0xC000 /* LED_SRC - [15:14] */
+#define WM831X_LED_SRC_SHIFT 14 /* LED_SRC - [15:14] */
+#define WM831X_LED_SRC_WIDTH 2 /* LED_SRC - [15:14] */
+#define WM831X_LED_MODE_MASK 0x0300 /* LED_MODE - [9:8] */
+#define WM831X_LED_MODE_SHIFT 8 /* LED_MODE - [9:8] */
+#define WM831X_LED_MODE_WIDTH 2 /* LED_MODE - [9:8] */
+#define WM831X_LED_SEQ_LEN_MASK 0x0030 /* LED_SEQ_LEN - [5:4] */
+#define WM831X_LED_SEQ_LEN_SHIFT 4 /* LED_SEQ_LEN - [5:4] */
+#define WM831X_LED_SEQ_LEN_WIDTH 2 /* LED_SEQ_LEN - [5:4] */
+#define WM831X_LED_DUR_MASK 0x000C /* LED_DUR - [3:2] */
+#define WM831X_LED_DUR_SHIFT 2 /* LED_DUR - [3:2] */
+#define WM831X_LED_DUR_WIDTH 2 /* LED_DUR - [3:2] */
+#define WM831X_LED_DUTY_CYC_MASK 0x0003 /* LED_DUTY_CYC - [1:0] */
+#define WM831X_LED_DUTY_CYC_SHIFT 0 /* LED_DUTY_CYC - [1:0] */
+#define WM831X_LED_DUTY_CYC_WIDTH 2 /* LED_DUTY_CYC - [1:0] */
+
+#endif