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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: introduce lp5521 led driver
  leds: just ignore invalid GPIOs in leds-gpio
  leds: Fix &&/|| confusion in leds-pca9532.c
  leds: move h1940-leds's probe function to .devinit.text
  leds: remove an unnecessary "goto" on drivers/leds/leds-s3c24.c
  leds: add BD2802GU LED driver
  leds: remove experimental flag from leds-clevo-mail
  leds: Prevent multiple LED triggers with the same name
  leds: Add gpio-led trigger
  leds: Add rb532 LED driver for the User LED
  leds: Add suspend/resume state flags to leds-gpio
  leds: simple driver for pwm driven LEDs
  leds: Fix leds-gpio driver multiple module_init/exit usage
  leds: Add dac124s085 driver
  leds: allow led-drivers to use a variable range of brightness values
  leds: Add openfirmware platform device support
This commit is contained in:
Linus Torvalds 2009-04-06 13:22:45 -07:00
parent 1aa2a7cc6f 67a32ec750
commit 3cd69271f8
22 changed files with 1772 additions and 73 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
Documentation/powerpc/dts-bindings/gpio/led.txt
View File

@ -1,15 +1,43 @@
LED connected to GPIO
LEDs connected to GPIO lines
Required properties:
- compatible : should be "gpio-led".
- label : (optional) the label for this LED. If omitted, the label is
- compatible : should be "gpio-leds".
Each LED is represented as a sub-node of the gpio-leds device. Each
node's name represents the name of the corresponding LED.
LED sub-node properties:
- gpios : Should specify the LED's GPIO, see "Specifying GPIO information
for devices" in Documentation/powerpc/booting-without-of.txt. Active
low LEDs should be indicated using flags in the GPIO specifier.
- label : (optional) The label for this LED. If omitted, the label is
taken from the node name (excluding the unit address).
- gpios : should specify LED GPIO.
- linux,default-trigger : (optional) This parameter, if present, is a
string defining the trigger assigned to the LED. Current triggers are:
"backlight" - LED will act as a back-light, controlled by the framebuffer
system
"default-on" - LED will turn on
"heartbeat" - LED "double" flashes at a load average based rate
"ide-disk" - LED indicates disk activity
"timer" - LED flashes at a fixed, configurable rate
Example:
Examples:
led@0 {
compatible = "gpio-led";
label = "hdd";
gpios = <&mcu_pio 0 1>;
leds {
compatible = "gpio-leds";
hdd {
label = "IDE Activity";
gpios = <&mcu_pio 0 1>; /* Active low */
linux,default-trigger = "ide-disk";
};
};
run-control {
compatible = "gpio-leds";
red {
gpios = <&mpc8572 6 0>;
};
green {
gpios = <&mpc8572 7 0>;
};
}

75
drivers/leds/Kconfig
View File

@ -31,6 +31,13 @@ config LEDS_LOCOMO
This option enables support for the LEDs on Sharp Locomo.
Zaurus models SL-5500 and SL-5600.
config LEDS_MIKROTIK_RB532
tristate "LED Support for Mikrotik Routerboard 532"
depends on LEDS_CLASS && MIKROTIK_RB532
help
This option enables support for the so called "User LED" of
Mikrotik's Routerboard 532.
config LEDS_S3C24XX
tristate "LED Support for Samsung S3C24XX GPIO LEDs"
depends on LEDS_CLASS && ARCH_S3C2410
@ -117,11 +124,40 @@ config LEDS_GPIO
help
This option enables support for the LEDs connected to GPIO
outputs. To be useful the particular board must have LEDs
and they must be connected to the GPIO lines.
and they must be connected to the GPIO lines. The LEDs must be
defined as platform devices and/or OpenFirmware platform devices.
The code to use these bindings can be selected below.
config LEDS_GPIO_PLATFORM
bool "Platform device bindings for GPIO LEDs"
depends on LEDS_GPIO
default y
help
Let the leds-gpio driver drive LEDs which have been defined as
platform devices. If you don't know what this means, say yes.
config LEDS_GPIO_OF
bool "OpenFirmware platform device bindings for GPIO LEDs"
depends on LEDS_GPIO && OF_DEVICE
default y
help
Let the leds-gpio driver drive LEDs which have been defined as
of_platform devices. For instance, LEDs which are listed in a "dts"
file.
config LEDS_LP5521
tristate "LED Support for the LP5521 LEDs"
depends on LEDS_CLASS && I2C
help
If you say 'Y' here you get support for the National Semiconductor
LP5521 LED driver used in n8x0 boards.
This driver can be built as a module by choosing 'M'. The module
will be called leds-lp5521.
config LEDS_CLEVO_MAIL
tristate "Mail LED on Clevo notebook (EXPERIMENTAL)"
depends on LEDS_CLASS && X86 && SERIO_I8042 && DMI && EXPERIMENTAL
tristate "Mail LED on Clevo notebook"
depends on LEDS_CLASS && X86 && SERIO_I8042 && DMI
help
This driver makes the mail LED accessible from userspace
programs through the leds subsystem. This LED have three
@ -171,6 +207,26 @@ config LEDS_DA903X
This option enables support for on-chip LED drivers found
on Dialog Semiconductor DA9030/DA9034 PMICs.
config LEDS_DAC124S085
tristate "LED Support for DAC124S085 SPI DAC"
depends on LEDS_CLASS && SPI
help
This option enables support for DAC124S085 SPI DAC from NatSemi,
which can be used to control up to four LEDs.
config LEDS_PWM
tristate "PWM driven LED Support"
depends on LEDS_CLASS && HAVE_PWM
help
This option enables support for pwm driven LEDs
config LEDS_BD2802
tristate "LED driver for BD2802 RGB LED"
depends on LEDS_CLASS && I2C
help
This option enables support for BD2802GU RGB LED driver chips
accessed via the I2C bus.
comment "LED Triggers"
config LEDS_TRIGGERS
@ -216,6 +272,19 @@ config LEDS_TRIGGER_BACKLIGHT
If unsure, say N.
config LEDS_TRIGGER_GPIO
tristate "LED GPIO Trigger"
depends on LEDS_TRIGGERS
depends on GPIOLIB
help
This allows LEDs to be controlled by gpio events. It's good
when using gpios as switches and triggering the needed LEDs
from there. One use case is n810's keypad LEDs that could
be triggered by this trigger when user slides up to show
keypad.
If unsure, say N.
config LEDS_TRIGGER_DEFAULT_ON
tristate "LED Default ON Trigger"
depends on LEDS_TRIGGERS

7
drivers/leds/Makefile
View File

@ -6,7 +6,9 @@ obj-$(CONFIG_LEDS_TRIGGERS) += led-triggers.o
# LED Platform Drivers
obj-$(CONFIG_LEDS_ATMEL_PWM) += leds-atmel-pwm.o
obj-$(CONFIG_LEDS_BD2802) += leds-bd2802.o
obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o
obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o
obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o
@ -24,10 +26,15 @@ obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
obj-$(CONFIG_LEDS_PCA955X) += leds-pca955x.o
obj-$(CONFIG_LEDS_DA903X) += leds-da903x.o
obj-$(CONFIG_LEDS_WM8350) += leds-wm8350.o
obj-$(CONFIG_LEDS_PWM) += leds-pwm.o
# LED SPI Drivers
obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o
# LED Triggers
obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK) += ledtrig-ide-disk.o
obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o
obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT) += ledtrig-backlight.o
obj-$(CONFIG_LEDS_TRIGGER_GPIO) += ledtrig-gpio.o
obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o

21
drivers/leds/led-class.c
View File

@ -64,7 +64,16 @@ static ssize_t led_brightness_store(struct device *dev,
return ret;
}
static ssize_t led_max_brightness_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
return sprintf(buf, "%u\n", led_cdev->max_brightness);
}
static DEVICE_ATTR(brightness, 0644, led_brightness_show, led_brightness_store);
static DEVICE_ATTR(max_brightness, 0444, led_max_brightness_show, NULL);
#ifdef CONFIG_LEDS_TRIGGERS
static DEVICE_ATTR(trigger, 0644, led_trigger_show, led_trigger_store);
#endif
@ -138,6 +147,13 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
list_add_tail(&led_cdev->node, &leds_list);
up_write(&leds_list_lock);
if (!led_cdev->max_brightness)
led_cdev->max_brightness = LED_FULL;
rc = device_create_file(led_cdev->dev, &dev_attr_max_brightness);
if (rc)
goto err_out_attr_max;
led_update_brightness(led_cdev);
#ifdef CONFIG_LEDS_TRIGGERS
@ -155,9 +171,11 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
#ifdef CONFIG_LEDS_TRIGGERS
err_out_led_list:
device_remove_file(led_cdev->dev, &dev_attr_max_brightness);
#endif
err_out_attr_max:
device_remove_file(led_cdev->dev, &dev_attr_brightness);
list_del(&led_cdev->node);
#endif
err_out:
device_unregister(led_cdev->dev);
return rc;
@ -172,6 +190,7 @@ EXPORT_SYMBOL_GPL(led_classdev_register);
*/
void led_classdev_unregister(struct led_classdev *led_cdev)
{
device_remove_file(led_cdev->dev, &dev_attr_max_brightness);
device_remove_file(led_cdev->dev, &dev_attr_brightness);
#ifdef CONFIG_LEDS_TRIGGERS
device_remove_file(led_cdev->dev, &dev_attr_trigger);

10
drivers/leds/led-triggers.c
View File

@ -156,12 +156,20 @@ EXPORT_SYMBOL_GPL(led_trigger_set_default);
int led_trigger_register(struct led_trigger *trigger)
{
struct led_classdev *led_cdev;
struct led_trigger *trig;
rwlock_init(&trigger->leddev_list_lock);
INIT_LIST_HEAD(&trigger->led_cdevs);
/* Add to the list of led triggers */
down_write(&triggers_list_lock);
/* Make sure the trigger's name isn't already in use */
list_for_each_entry(trig, &trigger_list, next_trig) {
if (!strcmp(trig->name, trigger->name)) {
up_write(&triggers_list_lock);
return -EEXIST;
}
}
/* Add to the list of led triggers */
list_add_tail(&trigger->next_trig, &trigger_list);
up_write(&triggers_list_lock);

765
drivers/leds/leds-bd2802.c Normal file
View File

@ -0,0 +1,765 @@
/*
* leds-bd2802.c - RGB LED Driver
*
* Copyright (C) 2009 Samsung Electronics
* Kim Kyuwon <q1.kim@samsung.com>
*
* 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.
*
* Datasheet: http://www.rohm.com/products/databook/driver/pdf/bd2802gu-e.pdf
*
*/
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/leds.h>
#include <linux/leds-bd2802.h>
#define LED_CTL(rgb2en, rgb1en) ((rgb2en) << 4 | ((rgb1en) << 0))
#define BD2802_LED_OFFSET 0xa
#define BD2802_COLOR_OFFSET 0x3
#define BD2802_REG_CLKSETUP 0x00
#define BD2802_REG_CONTROL 0x01
#define BD2802_REG_HOURSETUP 0x02
#define BD2802_REG_CURRENT1SETUP 0x03
#define BD2802_REG_CURRENT2SETUP 0x04
#define BD2802_REG_WAVEPATTERN 0x05
#define BD2802_CURRENT_032 0x10 /* 3.2mA */
#define BD2802_CURRENT_000 0x00 /* 0.0mA */
#define BD2802_PATTERN_FULL 0x07
#define BD2802_PATTERN_HALF 0x03
enum led_ids {
LED1,
LED2,
LED_NUM,
};
enum led_colors {
RED,
GREEN,
BLUE,
};
enum led_bits {
BD2802_OFF,
BD2802_BLINK,
BD2802_ON,
};
/*
* State '0' : 'off'
* State '1' : 'blink'
* State '2' : 'on'.
*/
struct led_state {
unsigned r:2;
unsigned g:2;
unsigned b:2;
};
struct bd2802_led {
struct bd2802_led_platform_data *pdata;
struct i2c_client *client;
struct rw_semaphore rwsem;
struct work_struct work;
struct led_state led[2];
/*
* Making led_classdev as array is not recommended, because array
* members prevent using 'container_of' macro. So repetitive works
* are needed.
*/
struct led_classdev cdev_led1r;
struct led_classdev cdev_led1g;
struct led_classdev cdev_led1b;
struct led_classdev cdev_led2r;
struct led_classdev cdev_led2g;
struct led_classdev cdev_led2b;
/*
* Advanced Configuration Function(ADF) mode:
* In ADF mode, user can set registers of BD2802GU directly,
* therefore BD2802GU doesn't enter reset state.
*/
int adf_on;
enum led_ids led_id;
enum led_colors color;
enum led_bits state;
};
/*--------------------------------------------------------------*/
/* BD2802GU helper functions */
/*--------------------------------------------------------------*/
static inline int bd2802_is_rgb_off(struct bd2802_led *led, enum led_ids id,
enum led_colors color)
{
switch (color) {
case RED:
return !led->led[id].r;
case GREEN:
return !led->led[id].g;
case BLUE:
return !led->led[id].b;
default:
dev_err(&led->client->dev, "%s: Invalid color\n", __func__);
return -EINVAL;
}
}
static inline int bd2802_is_led_off(struct bd2802_led *led, enum led_ids id)
{
if (led->led[id].r || led->led[id].g || led->led[id].b)
return 0;
return 1;
}
static inline int bd2802_is_all_off(struct bd2802_led *led)
{
int i;
for (i = 0; i < LED_NUM; i++)
if (!bd2802_is_led_off(led, i))
return 0;
return 1;
}
static inline u8 bd2802_get_base_offset(enum led_ids id, enum led_colors color)
{
return id * BD2802_LED_OFFSET + color * BD2802_COLOR_OFFSET;
}
static inline u8 bd2802_get_reg_addr(enum led_ids id, enum led_colors color,
u8 reg_offset)
{
return reg_offset + bd2802_get_base_offset(id, color);
}
/*--------------------------------------------------------------*/
/* BD2802GU core functions */
/*--------------------------------------------------------------*/
static int bd2802_write_byte(struct i2c_client *client, u8 reg, u8 val)
{
int ret = i2c_smbus_write_byte_data(client, reg, val);
if (ret >= 0)
return 0;
dev_err(&client->dev, "%s: reg 0x%x, val 0x%x, err %d\n",
__func__, reg, val, ret);
return ret;
}
static void bd2802_update_state(struct bd2802_led *led, enum led_ids id,
enum led_colors color, enum led_bits led_bit)
{
int i;
u8 value;
for (i = 0; i < LED_NUM; i++) {
if (i == id) {
switch (color) {
case RED:
led->led[i].r = led_bit;
break;
case GREEN:
led->led[i].g = led_bit;
break;
case BLUE:
led->led[i].b = led_bit;
break;
default:
dev_err(&led->client->dev,
"%s: Invalid color\n", __func__);
return;
}
}
}
if (led_bit == BD2802_BLINK || led_bit == BD2802_ON)
return;
if (!bd2802_is_led_off(led, id))
return;
if (bd2802_is_all_off(led) && !led->adf_on) {
gpio_set_value(led->pdata->reset_gpio, 0);
return;
}
/*
* In this case, other led is turned on, and current led is turned
* off. So set RGB LED Control register to stop the current RGB LED
*/
value = (id == LED1) ? LED_CTL(1, 0) : LED_CTL(0, 1);
bd2802_write_byte(led->client, BD2802_REG_CONTROL, value);
}
static void bd2802_configure(struct bd2802_led *led)
{
struct bd2802_led_platform_data *pdata = led->pdata;
u8 reg;
reg = bd2802_get_reg_addr(LED1, RED, BD2802_REG_HOURSETUP);
bd2802_write_byte(led->client, reg, pdata->rgb_time);
reg = bd2802_get_reg_addr(LED2, RED, BD2802_REG_HOURSETUP);
bd2802_write_byte(led->client, reg, pdata->rgb_time);
}
static void bd2802_reset_cancel(struct bd2802_led *led)
{
gpio_set_value(led->pdata->reset_gpio, 1);
udelay(100);
bd2802_configure(led);
}
static void bd2802_enable(struct bd2802_led *led, enum led_ids id)
{
enum led_ids other_led = (id == LED1) ? LED2 : LED1;
u8 value, other_led_on;
other_led_on = !bd2802_is_led_off(led, other_led);
if (id == LED1)
value = LED_CTL(other_led_on, 1);
else
value = LED_CTL(1 , other_led_on);
bd2802_write_byte(led->client, BD2802_REG_CONTROL, value);
}
static void bd2802_set_on(struct bd2802_led *led, enum led_ids id,
enum led_colors color)
{
u8 reg;
if (bd2802_is_all_off(led) && !led->adf_on)
bd2802_reset_cancel(led);
reg = bd2802_get_reg_addr(id, color, BD2802_REG_CURRENT1SETUP);
bd2802_write_byte(led->client, reg, BD2802_CURRENT_032);
reg = bd2802_get_reg_addr(id, color, BD2802_REG_CURRENT2SETUP);
bd2802_write_byte(led->client, reg, BD2802_CURRENT_000);
reg = bd2802_get_reg_addr(id, color, BD2802_REG_WAVEPATTERN);
bd2802_write_byte(led->client, reg, BD2802_PATTERN_FULL);
bd2802_enable(led, id);
bd2802_update_state(led, id, color, BD2802_ON);
}
static void bd2802_set_blink(struct bd2802_led *led, enum led_ids id,
enum led_colors color)
{
u8 reg;
if (bd2802_is_all_off(led) && !led->adf_on)
bd2802_reset_cancel(led);
reg = bd2802_get_reg_addr(id, color, BD2802_REG_CURRENT1SETUP);
bd2802_write_byte(led->client, reg, BD2802_CURRENT_000);
reg = bd2802_get_reg_addr(id, color, BD2802_REG_CURRENT2SETUP);
bd2802_write_byte(led->client, reg, BD2802_CURRENT_032);
reg = bd2802_get_reg_addr(id, color, BD2802_REG_WAVEPATTERN);
bd2802_write_byte(led->client, reg, BD2802_PATTERN_HALF);
bd2802_enable(led, id);
bd2802_update_state(led, id, color, BD2802_BLINK);
}
static void bd2802_turn_on(struct bd2802_led *led, enum led_ids id,
enum led_colors color, enum led_bits led_bit)
{
if (led_bit == BD2802_OFF) {
dev_err(&led->client->dev,
"Only 'blink' and 'on' are allowed\n");
return;
}
if (led_bit == BD2802_BLINK)
bd2802_set_blink(led, id, color);
else
bd2802_set_on(led, id, color);
}
static void bd2802_turn_off(struct bd2802_led *led, enum led_ids id,
enum led_colors color)
{
u8 reg;
if (bd2802_is_rgb_off(led, id, color))
return;
reg = bd2802_get_reg_addr(id, color, BD2802_REG_CURRENT1SETUP);
bd2802_write_byte(led->client, reg, BD2802_CURRENT_000);
reg = bd2802_get_reg_addr(id, color, BD2802_REG_CURRENT2SETUP);
bd2802_write_byte(led->client, reg, BD2802_CURRENT_000);
bd2802_update_state(led, id, color, BD2802_OFF);
}
static void bd2802_restore_state(struct bd2802_led *led)
{
int i;
for (i = 0; i < LED_NUM; i++) {
if (led->led[i].r)
bd2802_turn_on(led, i, RED, led->led[i].r);
if (led->led[i].g)
bd2802_turn_on(led, i, GREEN, led->led[i].g);
if (led->led[i].b)
bd2802_turn_on(led, i, BLUE, led->led[i].b);
}
}
#define BD2802_SET_REGISTER(reg_addr, reg_name) \
static ssize_t bd2802_store_reg##reg_addr(struct device *dev, \
struct device_attribute *attr, const char *buf, size_t count) \
{ \
struct bd2802_led *led = i2c_get_clientdata(to_i2c_client(dev));\
unsigned long val; \
int ret; \
if (!count) \
return -EINVAL; \
ret = strict_strtoul(buf, 16, &val); \
if (ret) \
return ret; \
down_write(&led->rwsem); \
bd2802_write_byte(led->client, reg_addr, (u8) val); \
up_write(&led->rwsem); \
return count; \
} \
static struct device_attribute bd2802_reg##reg_addr##_attr = { \
.attr = {.name = reg_name, .mode = 0644, .owner = THIS_MODULE}, \
.store = bd2802_store_reg##reg_addr, \
};
BD2802_SET_REGISTER(0x00, "0x00");
BD2802_SET_REGISTER(0x01, "0x01");
BD2802_SET_REGISTER(0x02, "0x02");
BD2802_SET_REGISTER(0x03, "0x03");
BD2802_SET_REGISTER(0x04, "0x04");
BD2802_SET_REGISTER(0x05, "0x05");
BD2802_SET_REGISTER(0x06, "0x06");
BD2802_SET_REGISTER(0x07, "0x07");
BD2802_SET_REGISTER(0x08, "0x08");
BD2802_SET_REGISTER(0x09, "0x09");
BD2802_SET_REGISTER(0x0a, "0x0a");
BD2802_SET_REGISTER(0x0b, "0x0b");
BD2802_SET_REGISTER(0x0c, "0x0c");
BD2802_SET_REGISTER(0x0d, "0x0d");
BD2802_SET_REGISTER(0x0e, "0x0e");
BD2802_SET_REGISTER(0x0f, "0x0f");
BD2802_SET_REGISTER(0x10, "0x10");
BD2802_SET_REGISTER(0x11, "0x11");
BD2802_SET_REGISTER(0x12, "0x12");
BD2802_SET_REGISTER(0x13, "0x13");
BD2802_SET_REGISTER(0x14, "0x14");
BD2802_SET_REGISTER(0x15, "0x15");
static struct device_attribute *bd2802_addr_attributes[] = {
&bd2802_reg0x00_attr,
&bd2802_reg0x01_attr,
&bd2802_reg0x02_attr,
&bd2802_reg0x03_attr,
&bd2802_reg0x04_attr,
&bd2802_reg0x05_attr,
&bd2802_reg0x06_attr,
&bd2802_reg0x07_attr,
&bd2802_reg0x08_attr,
&bd2802_reg0x09_attr,
&bd2802_reg0x0a_attr,
&bd2802_reg0x0b_attr,
&bd2802_reg0x0c_attr,
&bd2802_reg0x0d_attr,
&bd2802_reg0x0e_attr,
&bd2802_reg0x0f_attr,
&bd2802_reg0x10_attr,
&bd2802_reg0x11_attr,
&bd2802_reg0x12_attr,
&bd2802_reg0x13_attr,
&bd2802_reg0x14_attr,
&bd2802_reg0x15_attr,
};
static void bd2802_enable_adv_conf(struct bd2802_led *led)
{
int i, ret;
for (i = 0; i < ARRAY_SIZE(bd2802_addr_attributes); i++) {
ret = device_create_file(&led->client->dev,
bd2802_addr_attributes[i]);
if (ret) {
dev_err(&led->client->dev, "failed to sysfs file %s\n",
bd2802_addr_attributes[i]->attr.name);
goto failed_remove_files;
}
}
if (bd2802_is_all_off(led))
bd2802_reset_cancel(led);
led->adf_on = 1;
return;
failed_remove_files:
for (i--; i >= 0; i--)
device_remove_file(&led->client->dev,
bd2802_addr_attributes[i]);
}
static void bd2802_disable_adv_conf(struct bd2802_led *led)
{
int i;
for (i = 0; i < ARRAY_SIZE(bd2802_addr_attributes); i++)
device_remove_file(&led->client->dev,
bd2802_addr_attributes[i]);
if (bd2802_is_all_off(led))
gpio_set_value(led->pdata->reset_gpio, 0);
led->adf_on = 0;
}
static ssize_t bd2802_show_adv_conf(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct bd2802_led *led = i2c_get_clientdata(to_i2c_client(dev));
ssize_t ret;
down_read(&led->rwsem);
if (led->adf_on)
ret = sprintf(buf, "on\n");
else
ret = sprintf(buf, "off\n");
up_read(&led->rwsem);
return ret;
}
static ssize_t bd2802_store_adv_conf(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct bd2802_led *led = i2c_get_clientdata(to_i2c_client(dev));
if (!count)
return -EINVAL;
down_write(&led->rwsem);
if (!led->adf_on && !strncmp(buf, "on", 2))
bd2802_enable_adv_conf(led);
else if (led->adf_on && !strncmp(buf, "off", 3))
bd2802_disable_adv_conf(led);
up_write(&led->rwsem);
return count;
}
static struct device_attribute bd2802_adv_conf_attr = {
.attr = {
.name = "advanced_configuration",
.mode = 0644,
.owner = THIS_MODULE
},
.show = bd2802_show_adv_conf,
.store = bd2802_store_adv_conf,
};
static void bd2802_led_work(struct work_struct *work)
{
struct bd2802_led *led = container_of(work, struct bd2802_led, work);
if (led->state)
bd2802_turn_on(led, led->led_id, led->color, led->state);
else
bd2802_turn_off(led, led->led_id, led->color);
}
#define BD2802_CONTROL_RGBS(name, id, clr) \
static void bd2802_set_##name##_brightness(struct led_classdev *led_cdev,\
enum led_brightness value) \
{ \
struct bd2802_led *led = \
container_of(led_cdev, struct bd2802_led, cdev_##name); \
led->led_id = id; \
led->color = clr; \
if (value == LED_OFF) \
led->state = BD2802_OFF; \
else \
led->state = BD2802_ON; \
schedule_work(&led->work); \
} \
static int bd2802_set_##name##_blink(struct led_classdev *led_cdev, \
unsigned long *delay_on, unsigned long *delay_off) \
{ \
struct bd2802_led *led = \
container_of(led_cdev, struct bd2802_led, cdev_##name); \
if (*delay_on == 0 || *delay_off == 0) \
return -EINVAL; \
led->led_id = id; \
led->color = clr; \
led->state = BD2802_BLINK; \
schedule_work(&led->work); \
return 0; \
}
BD2802_CONTROL_RGBS(led1r, LED1, RED);
BD2802_CONTROL_RGBS(led1g, LED1, GREEN);
BD2802_CONTROL_RGBS(led1b, LED1, BLUE);
BD2802_CONTROL_RGBS(led2r, LED2, RED);
BD2802_CONTROL_RGBS(led2g, LED2, GREEN);
BD2802_CONTROL_RGBS(led2b, LED2, BLUE);
static int bd2802_register_led_classdev(struct bd2802_led *led)
{
int ret;
INIT_WORK(&led->work, bd2802_led_work);
led->cdev_led1r.name = "led1_R";
led->cdev_led1r.brightness = LED_OFF;
led->cdev_led1r.brightness_set = bd2802_set_led1r_brightness;
led->cdev_led1r.blink_set = bd2802_set_led1r_blink;
led->cdev_led1r.flags |= LED_CORE_SUSPENDRESUME;
ret = led_classdev_register(&led->client->dev, &led->cdev_led1r);
if (ret < 0) {
dev_err(&led->client->dev, "couldn't register LED %s\n",
led->cdev_led1r.name);
goto failed_unregister_led1_R;
}
led->cdev_led1g.name = "led1_G";
led->cdev_led1g.brightness = LED_OFF;
led->cdev_led1g.brightness_set = bd2802_set_led1g_brightness;
led->cdev_led1g.blink_set = bd2802_set_led1g_blink;
led->cdev_led1g.flags |= LED_CORE_SUSPENDRESUME;
ret = led_classdev_register(&led->client->dev, &led->cdev_led1g);
if (ret < 0) {
dev_err(&led->client->dev, "couldn't register LED %s\n",
led->cdev_led1g.name);
goto failed_unregister_led1_G;
}
led->cdev_led1b.name = "led1_B";
led->cdev_led1b.brightness = LED_OFF;
led->cdev_led1b.brightness_set = bd2802_set_led1b_brightness;
led->cdev_led1b.blink_set = bd2802_set_led1b_blink;
led->cdev_led1b.flags |= LED_CORE_SUSPENDRESUME;
ret = led_classdev_register(&led->client->dev, &led->cdev_led1b);
if (ret < 0) {
dev_err(&led->client->dev, "couldn't register LED %s\n",
led->cdev_led1b.name);
goto failed_unregister_led1_B;
}
led->cdev_led2r.name = "led2_R";
led->cdev_led2r.brightness = LED_OFF;
led->cdev_led2r.brightness_set = bd2802_set_led2r_brightness;
led->cdev_led2r.blink_set = bd2802_set_led2r_blink;
led->cdev_led2r.flags |= LED_CORE_SUSPENDRESUME;
ret = led_classdev_register(&led->client->dev, &led->cdev_led2r);
if (ret < 0) {
dev_err(&led->client->dev, "couldn't register LED %s\n",
led->cdev_led2r.name);
goto failed_unregister_led2_R;
}
led->cdev_led2g.name = "led2_G";
led->cdev_led2g.brightness = LED_OFF;
led->cdev_led2g.brightness_set = bd2802_set_led2g_brightness;
led->cdev_led2g.blink_set = bd2802_set_led2g_blink;
led->cdev_led2g.flags |= LED_CORE_SUSPENDRESUME;
ret = led_classdev_register(&led->client->dev, &led->cdev_led2g);
if (ret < 0) {
dev_err(&led->client->dev, "couldn't register LED %s\n",
led->cdev_led2g.name);
goto failed_unregister_led2_G;
}
led->cdev_led2b.name = "led2_B";
led->cdev_led2b.brightness = LED_OFF;
led->cdev_led2b.brightness_set = bd2802_set_led2b_brightness;
led->cdev_led2b.blink_set = bd2802_set_led2b_blink;
led->cdev_led2b.flags |= LED_CORE_SUSPENDRESUME;
ret = led_classdev_register(&led->client->dev, &led->cdev_led2b);
if (ret < 0) {
dev_err(&led->client->dev, "couldn't register LED %s\n",
led->cdev_led2b.name);
goto failed_unregister_led2_B;
}
return 0;
failed_unregister_led2_B:
led_classdev_unregister(&led->cdev_led2g);
failed_unregister_led2_G:
led_classdev_unregister(&led->cdev_led2r);
failed_unregister_led2_R:
led_classdev_unregister(&led->cdev_led1b);
failed_unregister_led1_B:
led_classdev_unregister(&led->cdev_led1g);
failed_unregister_led1_G:
led_classdev_unregister(&led->cdev_led1r);
failed_unregister_led1_R:
return ret;
}
static void bd2802_unregister_led_classdev(struct bd2802_led *led)
{
cancel_work_sync(&led->work);
led_classdev_unregister(&led->cdev_led1r);
}
static int __devinit bd2802_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct bd2802_led *led;
struct bd2802_led_platform_data *pdata;
int ret;
led = kzalloc(sizeof(struct bd2802_led), GFP_KERNEL);
if (!led) {
dev_err(&client->dev, "failed to allocate driver data\n");
return -ENOMEM;
}
led->client = client;
pdata = led->pdata = client->dev.platform_data;
i2c_set_clientdata(client, led);
/* Configure RESET GPIO (L: RESET, H: RESET cancel) */
gpio_request(pdata->reset_gpio, "RGB_RESETB");
gpio_direction_output(pdata->reset_gpio, 1);
/* Tacss = min 0.1ms */
udelay(100);
/* Detect BD2802GU */
ret = bd2802_write_byte(client, BD2802_REG_CLKSETUP, 0x00);
if (ret < 0) {
dev_err(&client->dev, "failed to detect device\n");
goto failed_free;
} else
dev_info(&client->dev, "return 0x%02x\n", ret);
/* To save the power, reset BD2802 after detecting */
gpio_set_value(led->pdata->reset_gpio, 0);
init_rwsem(&led->rwsem);
ret = device_create_file(&client->dev, &bd2802_adv_conf_attr);
if (ret) {
dev_err(&client->dev, "failed to create sysfs file %s\n",
bd2802_adv_conf_attr.attr.name);
goto failed_free;
}
ret = bd2802_register_led_classdev(led);
if (ret < 0)
goto failed_unregister_dev_file;
return 0;
failed_unregister_dev_file:
device_remove_file(&client->dev, &bd2802_adv_conf_attr);
failed_free:
i2c_set_clientdata(client, NULL);
kfree(led);
return ret;
}
static int __exit bd2802_remove(struct i2c_client *client)
{
struct bd2802_led *led = i2c_get_clientdata(client);
bd2802_unregister_led_classdev(led);
gpio_set_value(led->pdata->reset_gpio, 0);
if (led->adf_on)
bd2802_disable_adv_conf(led);
device_remove_file(&client->dev, &bd2802_adv_conf_attr);
i2c_set_clientdata(client, NULL);
kfree(led);
return 0;
}
static int bd2802_suspend(struct i2c_client *client, pm_message_t mesg)
{
struct bd2802_led *led = i2c_get_clientdata(client);
gpio_set_value(led->pdata->reset_gpio, 0);
return 0;
}
static int bd2802_resume(struct i2c_client *client)
{
struct bd2802_led *led = i2c_get_clientdata(client);
if (!bd2802_is_all_off(led) || led->adf_on) {
gpio_set_value(led->pdata->reset_gpio, 1);
udelay(100);
bd2802_restore_state(led);
}
return 0;
}
static const struct i2c_device_id bd2802_id[] = {
{ "BD2802", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, bd2802_id);
static struct i2c_driver bd2802_i2c_driver = {
.driver = {
.name = "BD2802",
},
.probe = bd2802_probe,
.remove = __exit_p(bd2802_remove),
.suspend = bd2802_suspend,
.resume = bd2802_resume,
.id_table = bd2802_id,
};
static int __init bd2802_init(void)
{
return i2c_add_driver(&bd2802_i2c_driver);
}
module_init(bd2802_init);
static void __exit bd2802_exit(void)
{
i2c_del_driver(&bd2802_i2c_driver);
}
module_exit(bd2802_exit);
MODULE_AUTHOR("Kim Kyuwon <q1.kim@samsung.com>");
MODULE_DESCRIPTION("BD2802 LED driver");
MODULE_LICENSE("GPL");

150
drivers/leds/leds-dac124s085.c Normal file
View File

@ -0,0 +1,150 @@
/*
* Copyright 2008
* Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
*
* This file is subject to the terms and conditions of version 2 of
* the GNU General Public License. See the file COPYING in the main
* directory of this archive for more details.
*
* LED driver for the DAC124S085 SPI DAC
*/
#include <linux/gfp.h>
#include <linux/leds.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/spi/spi.h>
struct dac124s085_led {
struct led_classdev ldev;
struct spi_device *spi;
int id;
int brightness;
char name[sizeof("dac124s085-3")];
struct mutex mutex;
struct work_struct work;
spinlock_t lock;
};
struct dac124s085 {
struct dac124s085_led leds[4];
};
#define REG_WRITE (0 << 12)
#define REG_WRITE_UPDATE (1 << 12)
#define ALL_WRITE_UPDATE (2 << 12)
#define POWER_DOWN_OUTPUT (3 << 12)
static void dac124s085_led_work(struct work_struct *work)
{
struct dac124s085_led *led = container_of(work, struct dac124s085_led,
work);
u16 word;
mutex_lock(&led->mutex);
word = cpu_to_le16(((led->id) << 14) | REG_WRITE_UPDATE |
(led->brightness & 0xfff));
spi_write(led->spi, (const u8 *)&word, sizeof(word));
mutex_unlock(&led->mutex);
}
static void dac124s085_set_brightness(struct led_classdev *ldev,
enum led_brightness brightness)
{
struct dac124s085_led *led = container_of(ldev, struct dac124s085_led,
ldev);
spin_lock(&led->lock);
led->brightness = brightness;
schedule_work(&led->work);
spin_unlock(&led->lock);
}
static int dac124s085_probe(struct spi_device *spi)
{
struct dac124s085 *dac;
struct dac124s085_led *led;
int i, ret;
dac = kzalloc(sizeof(*dac), GFP_KERNEL);
if (!dac)
return -ENOMEM;
spi->bits_per_word = 16;
for (i = 0; i < ARRAY_SIZE(dac->leds); i++) {
led = dac->leds + i;
led->id = i;
led->brightness = LED_OFF;
led->spi = spi;
snprintf(led->name, sizeof(led->name), "dac124s085-%d", i);
spin_lock_init(&led->lock);
INIT_WORK(&led->work, dac124s085_led_work);
mutex_init(&led->mutex);
led->ldev.name = led->name;
led->ldev.brightness = LED_OFF;
led->ldev.max_brightness = 0xfff;
led->ldev.brightness_set = dac124s085_set_brightness;
ret = led_classdev_register(&spi->dev, &led->ldev);
if (ret < 0)
goto eledcr;
}
spi_set_drvdata(spi, dac);
return 0;
eledcr:
while (i--)
led_classdev_unregister(&dac->leds[i].ldev);
spi_set_drvdata(spi, NULL);
kfree(dac);
return ret;
}
static int dac124s085_remove(struct spi_device *spi)
{
struct dac124s085 *dac = spi_get_drvdata(spi);
int i;
for (i = 0; i < ARRAY_SIZE(dac->leds); i++) {
led_classdev_unregister(&dac->leds[i].ldev);
cancel_work_sync(&dac->leds[i].work);
}
spi_set_drvdata(spi, NULL);
kfree(dac);
return 0;
}
static struct spi_driver dac124s085_driver = {
.probe = dac124s085_probe,
.remove = dac124s085_remove,
.driver = {
.name = "dac124s085",
.owner = THIS_MODULE,
},
};
static int __init dac124s085_leds_init(void)
{
return spi_register_driver(&dac124s085_driver);
}
static void __exit dac124s085_leds_exit(void)
{
spi_unregister_driver(&dac124s085_driver);
}
module_init(dac124s085_leds_init);
module_exit(dac124s085_leds_exit);
MODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>");
MODULE_DESCRIPTION("DAC124S085 LED driver");
MODULE_LICENSE("GPL v2");

225
drivers/leds/leds-gpio.c
View File

@ -3,6 +3,7 @@
*
* Copyright (C) 2007 8D Technologies inc.
* Raphael Assenat <raph@8d.com>
* Copyright (C) 2008 Freescale Semiconductor, Inc.
*
* 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
@ -71,11 +72,67 @@ static int gpio_blink_set(struct led_classdev *led_cdev,
return led_dat->platform_gpio_blink_set(led_dat->gpio, delay_on, delay_off);
}
static int __devinit create_gpio_led(const struct gpio_led *template,
struct gpio_led_data *led_dat, struct device *parent,
int (*blink_set)(unsigned, unsigned long *, unsigned long *))
{
int ret;
/* skip leds that aren't available */
if (!gpio_is_valid(template->gpio)) {
printk(KERN_INFO "Skipping unavilable LED gpio %d (%s)\n",
template->gpio, template->name);
return;
}
ret = gpio_request(template->gpio, template->name);
if (ret < 0)
return ret;
led_dat->cdev.name = template->name;
led_dat->cdev.default_trigger = template->default_trigger;
led_dat->gpio = template->gpio;
led_dat->can_sleep = gpio_cansleep(template->gpio);
led_dat->active_low = template->active_low;
if (blink_set) {
led_dat->platform_gpio_blink_set = blink_set;
led_dat->cdev.blink_set = gpio_blink_set;
}
led_dat->cdev.brightness_set = gpio_led_set;
led_dat->cdev.brightness = LED_OFF;
if (!template->retain_state_suspended)
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
ret = gpio_direction_output(led_dat->gpio, led_dat->active_low);
if (ret < 0)
goto err;
INIT_WORK(&led_dat->work, gpio_led_work);
ret = led_classdev_register(parent, &led_dat->cdev);
if (ret < 0)
goto err;
return 0;
err:
gpio_free(led_dat->gpio);
return ret;
}
static void delete_gpio_led(struct gpio_led_data *led)
{
if (!gpio_is_valid(led->gpio))
return;
led_classdev_unregister(&led->cdev);
cancel_work_sync(&led->work);
gpio_free(led->gpio);
}
#ifdef CONFIG_LEDS_GPIO_PLATFORM
static int gpio_led_probe(struct platform_device *pdev)
{
struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
struct gpio_led *cur_led;
struct gpio_led_data *leds_data, *led_dat;
struct gpio_led_data *leds_data;
int i, ret = 0;
if (!pdata)
@ -87,35 +144,10 @@ static int gpio_led_probe(struct platform_device *pdev)
return -ENOMEM;
for (i = 0; i < pdata->num_leds; i++) {
cur_led = &pdata->leds[i];
led_dat = &leds_data[i];
ret = gpio_request(cur_led->gpio, cur_led->name);
ret = create_gpio_led(&pdata->leds[i], &leds_data[i],
&pdev->dev, pdata->gpio_blink_set);
if (ret < 0)
goto err;
led_dat->cdev.name = cur_led->name;
led_dat->cdev.default_trigger = cur_led->default_trigger;
led_dat->gpio = cur_led->gpio;
led_dat->can_sleep = gpio_cansleep(cur_led->gpio);
led_dat->active_low = cur_led->active_low;
if (pdata->gpio_blink_set) {
led_dat->platform_gpio_blink_set = pdata->gpio_blink_set;
led_dat->cdev.blink_set = gpio_blink_set;
}
led_dat->cdev.brightness_set = gpio_led_set;
led_dat->cdev.brightness = LED_OFF;
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
gpio_direction_output(led_dat->gpio, led_dat->active_low);
INIT_WORK(&led_dat->work, gpio_led_work);
ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
if (ret < 0) {
gpio_free(led_dat->gpio);
goto err;
}
}
platform_set_drvdata(pdev, leds_data);
@ -123,13 +155,8 @@ static int gpio_led_probe(struct platform_device *pdev)
return 0;
err:
if (i > 0) {
for (i = i - 1; i >= 0; i--) {
led_classdev_unregister(&leds_data[i].cdev);
cancel_work_sync(&leds_data[i].work);
gpio_free(leds_data[i].gpio);
}
}
for (i = i - 1; i >= 0; i--)
delete_gpio_led(&leds_data[i]);
kfree(leds_data);
@ -144,11 +171,8 @@ static int __devexit gpio_led_remove(struct platform_device *pdev)
leds_data = platform_get_drvdata(pdev);
for (i = 0; i < pdata->num_leds; i++) {
led_classdev_unregister(&leds_data[i].cdev);
cancel_work_sync(&leds_data[i].work);
gpio_free(leds_data[i].gpio);
}
for (i = 0; i < pdata->num_leds; i++)
delete_gpio_led(&leds_data[i]);
kfree(leds_data);
@ -164,20 +188,133 @@ static struct platform_driver gpio_led_driver = {
},
};
MODULE_ALIAS("platform:leds-gpio");
#endif /* CONFIG_LEDS_GPIO_PLATFORM */
/* Code to create from OpenFirmware platform devices */
#ifdef CONFIG_LEDS_GPIO_OF
#include <linux/of_platform.h>
#include <linux/of_gpio.h>
struct gpio_led_of_platform_data {
int num_leds;
struct gpio_led_data led_data[];
};
static int __devinit of_gpio_leds_probe(struct of_device *ofdev,
const struct of_device_id *match)
{
struct device_node *np = ofdev->node, *child;
struct gpio_led led;
struct gpio_led_of_platform_data *pdata;
int count = 0, ret;
/* count LEDs defined by this device, so we know how much to allocate */
for_each_child_of_node(np, child)
count++;
if (!count)
return 0; /* or ENODEV? */
pdata = kzalloc(sizeof(*pdata) + sizeof(struct gpio_led_data) * count,
GFP_KERNEL);
if (!pdata)
return -ENOMEM;
memset(&led, 0, sizeof(led));
for_each_child_of_node(np, child) {
enum of_gpio_flags flags;
led.gpio = of_get_gpio_flags(child, 0, &flags);
led.active_low = flags & OF_GPIO_ACTIVE_LOW;
led.name = of_get_property(child, "label", NULL) ? : child->name;
led.default_trigger =
of_get_property(child, "linux,default-trigger", NULL);
ret = create_gpio_led(&led, &pdata->led_data[pdata->num_leds++],
&ofdev->dev, NULL);
if (ret < 0) {
of_node_put(child);
goto err;
}
}
dev_set_drvdata(&ofdev->dev, pdata);
return 0;
err:
for (count = pdata->num_leds - 2; count >= 0; count--)
delete_gpio_led(&pdata->led_data[count]);
kfree(pdata);
return ret;
}
static int __devexit of_gpio_leds_remove(struct of_device *ofdev)
{
struct gpio_led_of_platform_data *pdata = dev_get_drvdata(&ofdev->dev);
int i;
for (i = 0; i < pdata->num_leds; i++)
delete_gpio_led(&pdata->led_data[i]);
kfree(pdata);
dev_set_drvdata(&ofdev->dev, NULL);
return 0;
}
static const struct of_device_id of_gpio_leds_match[] = {
{ .compatible = "gpio-leds", },
{},
};
static struct of_platform_driver of_gpio_leds_driver = {
.driver = {
.name = "of_gpio_leds",
.owner = THIS_MODULE,
},
.match_table = of_gpio_leds_match,
.probe = of_gpio_leds_probe,
.remove = __devexit_p(of_gpio_leds_remove),
};
#endif
static int __init gpio_led_init(void)
{
return platform_driver_register(&gpio_led_driver);
int ret;
#ifdef CONFIG_LEDS_GPIO_PLATFORM
ret = platform_driver_register(&gpio_led_driver);
if (ret)
return ret;
#endif
#ifdef CONFIG_LEDS_GPIO_OF
ret = of_register_platform_driver(&of_gpio_leds_driver);
#endif
#ifdef CONFIG_LEDS_GPIO_PLATFORM
if (ret)
platform_driver_unregister(&gpio_led_driver);
#endif
return ret;
}
static void __exit gpio_led_exit(void)
{
#ifdef CONFIG_LEDS_GPIO_PLATFORM
platform_driver_unregister(&gpio_led_driver);
#endif
#ifdef CONFIG_LEDS_GPIO_OF
of_unregister_platform_driver(&of_gpio_leds_driver);
#endif
}
module_init(gpio_led_init);
module_exit(gpio_led_exit);
MODULE_AUTHOR("Raphael Assenat <raph@8d.com>");
MODULE_AUTHOR("Raphael Assenat <raph@8d.com>, Trent Piepho <tpiepho@freescale.com>");
MODULE_DESCRIPTION("GPIO LED driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:leds-gpio");

2
drivers/leds/leds-h1940.c
View File

@ -104,7 +104,7 @@ static struct led_classdev h1940_blueled = {
.default_trigger = "h1940-bluetooth",
};
static int __init h1940leds_probe(struct platform_device *pdev)
static int __devinit h1940leds_probe(struct platform_device *pdev)
{
int ret;

2
drivers/leds/leds-pca9532.c
View File

@ -169,7 +169,7 @@ static int pca9532_event(struct input_dev *dev, unsigned int type,
{
struct pca9532_data *data = input_get_drvdata(dev);
if (type != EV_SND && (code != SND_BELL || code != SND_TONE))
if (!(type == EV_SND && (code == SND_BELL || code == SND_TONE)))
return -1;
/* XXX: allow different kind of beeps with psc/pwm modifications */

153
drivers/leds/leds-pwm.c Normal file
View File

@ -0,0 +1,153 @@
/*
* linux/drivers/leds-pwm.c
*
* simple PWM based LED control
*
* Copyright 2009 Luotao Fu @ Pengutronix (l.fu@pengutronix.de)
*
* based on leds-gpio.c by Raphael Assenat <raph@8d.com>
*
* 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/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/fb.h>
#include <linux/leds.h>
#include <linux/err.h>
#include <linux/pwm.h>
#include <linux/leds_pwm.h>
struct led_pwm_data {
struct led_classdev cdev;
struct pwm_device *pwm;
unsigned int active_low;
unsigned int period;
unsigned int max_brightness;
};
static void led_pwm_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct led_pwm_data *led_dat =
container_of(led_cdev, struct led_pwm_data, cdev);
unsigned int max = led_dat->max_brightness;
unsigned int period = led_dat->period;
if (brightness == 0) {
pwm_config(led_dat->pwm, 0, period);
pwm_disable(led_dat->pwm);
} else {
pwm_config(led_dat->pwm, brightness * period / max, period);
pwm_enable(led_dat->pwm);
}
}
static int led_pwm_probe(struct platform_device *pdev)
{
struct led_pwm_platform_data *pdata = pdev->dev.platform_data;
struct led_pwm *cur_led;
struct led_pwm_data *leds_data, *led_dat;
int i, ret = 0;
if (!pdata)
return -EBUSY;
leds_data = kzalloc(sizeof(struct led_pwm_data) * pdata->num_leds,
GFP_KERNEL);
if (!leds_data)
return -ENOMEM;
for (i = 0; i < pdata->num_leds; i++) {
cur_led = &pdata->leds[i];
led_dat = &leds_data[i];
led_dat->pwm = pwm_request(cur_led->pwm_id,
cur_led->name);
if (IS_ERR(led_dat->pwm)) {
dev_err(&pdev->dev, "unable to request PWM %d\n",
cur_led->pwm_id);
goto err;
}
led_dat->cdev.name = cur_led->name;
led_dat->cdev.default_trigger = cur_led->default_trigger;
led_dat->active_low = cur_led->active_low;
led_dat->max_brightness = cur_led->max_brightness;
led_dat->period = cur_led->pwm_period_ns;
led_dat->cdev.brightness_set = led_pwm_set;
led_dat->cdev.brightness = LED_OFF;
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
if (ret < 0) {
pwm_free(led_dat->pwm);
goto err;
}
}
platform_set_drvdata(pdev, leds_data);
return 0;
err:
if (i > 0) {
for (i = i - 1; i >= 0; i--) {
led_classdev_unregister(&leds_data[i].cdev);
pwm_free(leds_data[i].pwm);
}
}
kfree(leds_data);
return ret;
}
static int __devexit led_pwm_remove(struct platform_device *pdev)
{
int i;
struct led_pwm_platform_data *pdata = pdev->dev.platform_data;
struct led_pwm_data *leds_data;
leds_data = platform_get_drvdata(pdev);
for (i = 0; i < pdata->num_leds; i++) {
led_classdev_unregister(&leds_data[i].cdev);
pwm_free(leds_data[i].pwm);
}
kfree(leds_data);
return 0;
}
static struct platform_driver led_pwm_driver = {
.probe = led_pwm_probe,
.remove = __devexit_p(led_pwm_remove),
.driver = {
.name = "leds_pwm",
.owner = THIS_MODULE,
},
};
static int __init led_pwm_init(void)
{
return platform_driver_register(&led_pwm_driver);
}
static void __exit led_pwm_exit(void)
{
platform_driver_unregister(&led_pwm_driver);
}
module_init(led_pwm_init);
module_exit(led_pwm_exit);
MODULE_AUTHOR("Luotao Fu <l.fu@pengutronix.de>");
MODULE_DESCRIPTION("PWM LED driver for PXA");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:leds-pwm");

77
drivers/leds/leds-rb532.c Normal file
View File

@ -0,0 +1,77 @@
/*
* LEDs driver for the "User LED" on Routerboard532
*
* Copyright (C) 2009 Phil Sutter <n0-1@freewrt.org>
*
* Based on leds-cobalt-qube.c by Florian Fainelly and
* rb-diag.c (my own standalone driver for both LED and
* button of Routerboard532).
*/
#include <linux/leds.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <asm/mach-rc32434/gpio.h>
#include <asm/mach-rc32434/rb.h>
static void rb532_led_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
if (brightness)
set_latch_u5(LO_ULED, 0);
else
set_latch_u5(0, LO_ULED);
}
static enum led_brightness rb532_led_get(struct led_classdev *cdev)
{
return (get_latch_u5() & LO_ULED) ? LED_FULL : LED_OFF;
}
static struct led_classdev rb532_uled = {
.name = "uled",
.brightness_set = rb532_led_set,
.brightness_get = rb532_led_get,
.default_trigger = "nand-disk",
};
static int __devinit rb532_led_probe(struct platform_device *pdev)
{
return led_classdev_register(&pdev->dev, &rb532_uled);
}
static int __devexit rb532_led_remove(struct platform_device *pdev)
{
led_classdev_unregister(&rb532_uled);
return 0;
}
static struct platform_driver rb532_led_driver = {
.probe = rb532_led_probe,
.remove = __devexit_p(rb532_led_remove),
.driver = {
.name = "rb532-led",
.owner = THIS_MODULE,
},
};
static int __init rb532_led_init(void)
{
return platform_driver_register(&rb532_led_driver);
}
static void __exit rb532_led_exit(void)
{
platform_driver_unregister(&rb532_led_driver);
}
module_init(rb532_led_init);
module_exit(rb532_led_exit);
MODULE_ALIAS("platform:rb532-led");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("User LED support for Routerboard532");
MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>");

7
drivers/leds/leds-s3c24xx.c
View File

@ -102,14 +102,11 @@ static int s3c24xx_led_probe(struct platform_device *dev)
ret = led_classdev_register(&dev->dev, &led->cdev);
if (ret < 0) {
dev_err(&dev->dev, "led_classdev_register failed\n");
goto exit_err1;
kfree(led);
return ret;
}
return 0;
exit_err1:
kfree(led);
return ret;
}
static struct platform_driver s3c24xx_led_driver = {

4
drivers/leds/leds.h
View File

@ -20,8 +20,8 @@
static inline void led_set_brightness(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value > LED_FULL)
value = LED_FULL;
if (value > led_cdev->max_brightness)
value = led_cdev->max_brightness;
led_cdev->brightness = value;
if (!(led_cdev->flags & LED_SUSPENDED))
led_cdev->brightness_set(led_cdev, value);

2
drivers/leds/ledtrig-default-on.c
View File

@ -19,7 +19,7 @@
static void defon_trig_activate(struct led_classdev *led_cdev)
{
led_set_brightness(led_cdev, LED_FULL);
led_set_brightness(led_cdev, led_cdev->max_brightness);
}
static struct led_trigger defon_led_trigger = {

239
drivers/leds/ledtrig-gpio.c Normal file
View File

@ -0,0 +1,239 @@
/*
* ledtrig-gio.c - LED Trigger Based on GPIO events
*
* Copyright 2009 Felipe Balbi <me@felipebalbi.com>
*
* 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/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/leds.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 */
unsigned gpio; /* gpio that triggers the leds */
};
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(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,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led = dev_get_drvdata(dev);
struct gpio_trig_data *gpio_data = led->trigger_data;
return sprintf(buf, "%u\n", gpio_data->desired_brightness);
}
static ssize_t gpio_trig_brightness_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t n)
{
struct led_classdev *led = dev_get_drvdata(dev);
struct gpio_trig_data *gpio_data = led->trigger_data;
unsigned desired_brightness;
int ret;
ret = sscanf(buf, "%u", &desired_brightness);
if (ret < 1 || desired_brightness > 255) {
dev_err(dev, "invalid value\n");
return -EINVAL;
}
gpio_data->desired_brightness = desired_brightness;
return n;
}
static DEVICE_ATTR(desired_brightness, 0644, gpio_trig_brightness_show,
gpio_trig_brightness_store);
static ssize_t gpio_trig_inverted_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led = dev_get_drvdata(dev);
struct gpio_trig_data *gpio_data = led->trigger_data;
return sprintf(buf, "%s\n", gpio_data->inverted ? "yes" : "no");
}
static ssize_t gpio_trig_inverted_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t n)
{
struct led_classdev *led = dev_get_drvdata(dev);
struct gpio_trig_data *gpio_data = led->trigger_data;
unsigned inverted;
int ret;
ret = sscanf(buf, "%u", &inverted);
if (ret < 1) {
dev_err(dev, "invalid value\n");
return -EINVAL;
}
gpio_data->inverted = !!inverted;
return n;
}
static DEVICE_ATTR(inverted, 0644, gpio_trig_inverted_show,
gpio_trig_inverted_store);
static ssize_t gpio_trig_gpio_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led = dev_get_drvdata(dev);
struct gpio_trig_data *gpio_data = led->trigger_data;
return sprintf(buf, "%u\n", gpio_data->gpio);
}
static ssize_t gpio_trig_gpio_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t n)
{
struct led_classdev *led = dev_get_drvdata(dev);
struct gpio_trig_data *gpio_data = led->trigger_data;
unsigned gpio;
int ret;
ret = sscanf(buf, "%u", &gpio);
if (ret < 1) {
dev_err(dev, "couldn't read gpio number\n");
flush_work(&gpio_data->work);
return -EINVAL;
}
if (!gpio) {
free_irq(gpio_to_irq(gpio_data->gpio), led);
return n;
}
if (gpio_data->gpio > 0 && gpio_data->gpio != gpio)
free_irq(gpio_to_irq(gpio_data->gpio), led);
gpio_data->gpio = gpio;
ret = request_irq(gpio_to_irq(gpio), gpio_trig_irq,
IRQF_SHARED | IRQF_TRIGGER_RISING
| IRQF_TRIGGER_FALLING, "ledtrig-gpio", led);
if (ret)
dev_err(dev, "request_irq failed with error %d\n", ret);
return ret ? ret : n;
}
static DEVICE_ATTR(gpio, 0644, gpio_trig_gpio_show, gpio_trig_gpio_store);
static void gpio_trig_activate(struct led_classdev *led)
{
struct gpio_trig_data *gpio_data;
int ret;
gpio_data = kzalloc(sizeof(*gpio_data), GFP_KERNEL);
if (!gpio_data)
return;
ret = device_create_file(led->dev, &dev_attr_gpio);
if (ret)
goto err_gpio;
ret = device_create_file(led->dev, &dev_attr_inverted);
if (ret)
goto err_inverted;
ret = device_create_file(led->dev, &dev_attr_desired_brightness);
if (ret)
goto err_brightness;
gpio_data->led = led;
led->trigger_data = gpio_data;
INIT_WORK(&gpio_data->work, gpio_trig_work);
return;
err_brightness:
device_remove_file(led->dev, &dev_attr_inverted);
err_inverted:
device_remove_file(led->dev, &dev_attr_gpio);
err_gpio:
kfree(gpio_data);
}
static void gpio_trig_deactivate(struct led_classdev *led)
{
struct gpio_trig_data *gpio_data = led->trigger_data;
if (gpio_data) {
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);
free_irq(gpio_to_irq(gpio_data->gpio),led);
kfree(gpio_data);
}
}
static struct led_trigger gpio_led_trigger = {
.name = "gpio",
.activate = gpio_trig_activate,
.deactivate = gpio_trig_deactivate,
};
static int __init gpio_trig_init(void)
{
return led_trigger_register(&gpio_led_trigger);
}
module_init(gpio_trig_init);
static void __exit gpio_trig_exit(void)
{
led_trigger_unregister(&gpio_led_trigger);
}
module_exit(gpio_trig_exit);
MODULE_AUTHOR("Felipe Balbi <me@felipebalbi.com>");
MODULE_DESCRIPTION("GPIO LED trigger");
MODULE_LICENSE("GPL");

4
drivers/leds/ledtrig-heartbeat.c
View File

@ -47,7 +47,7 @@ static void led_heartbeat_function(unsigned long data)
msecs_to_jiffies(heartbeat_data->period);
delay = msecs_to_jiffies(70);
heartbeat_data->phase++;
brightness = LED_FULL;
brightness = led_cdev->max_brightness;
break;
case 1:
delay = heartbeat_data->period / 4 - msecs_to_jiffies(70);
@ -56,7 +56,7 @@ static void led_heartbeat_function(unsigned long data)
case 2:
delay = msecs_to_jiffies(70);
heartbeat_data->phase++;
brightness = LED_FULL;
brightness = led_cdev->max_brightness;
break;
default:
delay = heartbeat_data->period - heartbeat_data->period / 4 -

3
drivers/leds/ledtrig-ide-disk.c
View File

@ -37,7 +37,8 @@ static void ledtrig_ide_timerfunc(unsigned long data)
{
if (ide_lastactivity != ide_activity) {
ide_lastactivity = ide_activity;
led_trigger_event(ledtrig_ide, LED_FULL);
/* INT_MAX will set each LED to its maximum brightness */
led_trigger_event(ledtrig_ide, INT_MAX);
mod_timer(&ledtrig_ide_timer, jiffies + msecs_to_jiffies(10));
} else {
led_trigger_event(ledtrig_ide, LED_OFF);

2
drivers/leds/ledtrig-timer.c
View File

@ -166,7 +166,7 @@ static void timer_trig_activate(struct led_classdev *led_cdev)
timer_data->brightness_on = led_get_brightness(led_cdev);
if (timer_data->brightness_on == LED_OFF)
timer_data->brightness_on = LED_FULL;
timer_data->brightness_on = led_cdev->max_brightness;
led_cdev->trigger_data = timer_data;
init_timer(&timer_data->timer);

26
include/linux/leds-bd2802.h Normal file
View File

@ -0,0 +1,26 @@
/*
* leds-bd2802.h - RGB LED Driver
*
* Copyright (C) 2009 Samsung Electronics
* Kim Kyuwon <q1.kim@samsung.com>
*
* 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.
*
* Datasheet: http://www.rohm.com/products/databook/driver/pdf/bd2802gu-e.pdf
*
*/
#ifndef _LEDS_BD2802_H_
#define _LEDS_BD2802_H_
struct bd2802_led_platform_data{
int reset_gpio;
u8 rgb_time;
};
#define RGB_TIME(slopedown, slopeup, waveform) \
((slopedown) << 6 | (slopeup) << 4 | (waveform))
#endif /* _LEDS_BD2802_H_ */

4
include/linux/leds.h
View File

@ -30,6 +30,7 @@ enum led_brightness {
struct led_classdev {
const char *name;
int brightness;
int max_brightness;
int flags;
/* Lower 16 bits reflect status */
@ -140,7 +141,8 @@ struct gpio_led {
const char *name;
const char *default_trigger;
unsigned gpio;
u8 active_low;
u8 active_low : 1;
u8 retain_state_suspended : 1;
};
struct gpio_led_platform_data {

21
include/linux/leds_pwm.h Normal file
View File

@ -0,0 +1,21 @@
/*
* PWM LED driver data - see drivers/leds/leds-pwm.c
*/
#ifndef __LINUX_LEDS_PWM_H
#define __LINUX_LEDS_PWM_H
struct led_pwm {
const char *name;
const char *default_trigger;
unsigned pwm_id;
u8 active_low;
unsigned max_brightness;
unsigned pwm_period_ns;
};
struct led_pwm_platform_data {
int num_leds;
struct led_pwm *leds;
};
#endif