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Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds

Browse Source 
Pull LED subsystem updates from Bryan Wu:
 - move LED trigger drivers into a new directory
 - lp55xx common driver updates
 - other led drivers updates and bug fixing

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
  leds: leds-asic3: switch to using SIMPLE_DEV_PM_OPS
  leds: leds-bd2802: add CONFIG_PM_SLEEP to suspend/resume functions
  leds: lp55xx: configure the clock detection
  leds: lp55xx: use common clock framework when external clock is used
  leds: leds-ns2: fix oops at module removal
  leds: leds-pwm: Defer led_pwm_set() if PWM can sleep
  leds: lp55xx: fix the sysfs read operation
  leds: lm355x, lm3642: support camera LED triggers for flash and torch
  leds: add camera LED triggers
  leds: trigger: use inline functions instead of macros
  leds: tca6507: Use of_match_ptr() macro
  leds: wm8350: Complain if we fail to reenable DCDC
  leds: renesas: set gpio_request_one() flags param correctly
  leds: leds-ns2: set devm_gpio_request_one() flags param correctly
  leds: leds-lt3593: set devm_gpio_request_one() flags param correctly
  leds: leds-bd2802: remove erroneous __exit annotation
  leds: atmel-pwm: remove erroneous __exit annotation
  leds: move LED trigger drivers into new subdirectory
  leds: add new LP5562 LED driver
This commit is contained in:
Linus Torvalds 2013-05-06 15:41:42 -07:00
commit 2b69703fea
36 changed files with 1149 additions and 220 deletions
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2
Documentation/leds/00-INDEX
View File

@ -6,6 +6,8 @@ leds-lp5521.txt
- notes on how to use the leds-lp5521 driver.
leds-lp5523.txt
- notes on how to use the leds-lp5523 driver.
leds-lp5562.txt
- notes on how to use the leds-lp5562 driver.
leds-lp55xx.txt
- description about lp55xx common driver.
leds-lm3556.txt

19
Documentation/leds/leds-lp5521.txt
View File

@ -81,22 +81,3 @@ static struct lp55xx_platform_data lp5521_platform_data = {
If the current is set to 0 in the platform data, that channel is
disabled and it is not visible in the sysfs.
The 'update_config' : CONFIG register (ADDR 08h)
This value is platform-specific data.
If update_config is not defined, the CONFIG register is set with
'LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT'.
(Enable auto-powersave, set charge pump to auto, red to battery)
example of update_config :
#define LP5521_CONFIGS (LP5521_PWM_HF | LP5521_PWRSAVE_EN | \
LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT | \
LP5521_CLK_INT)
static struct lp55xx_platform_data lp5521_pdata = {
.led_config = lp5521_led_config,
.num_channels = ARRAY_SIZE(lp5521_led_config),
.clock_mode = LP55XX_CLOCK_INT,
.update_config = LP5521_CONFIGS,
};

120
Documentation/leds/leds-lp5562.txt Normal file
View File

@ -0,0 +1,120 @@
Kernel driver for LP5562
========================
* TI LP5562 LED Driver
Author: Milo(Woogyom) Kim <milo.kim@ti.com>
Description
LP5562 can drive up to 4 channels. R/G/B and White.
LEDs can be controlled directly via the led class control interface.
All four channels can be also controlled using the engine micro programs.
LP5562 has the internal program memory for running various LED patterns.
For the details, please refer to 'firmware' section in leds-lp55xx.txt
Device attribute: engine_mux
3 Engines are allocated in LP5562, but the number of channel is 4.
Therefore each channel should be mapped to the engine number.
Value : RGB or W
This attribute is used for programming LED data with the firmware interface.
Unlike the LP5521/LP5523/55231, LP5562 has unique feature for the engine mux,
so additional sysfs is required.
LED Map
Red ... Engine 1 (fixed)
Green ... Engine 2 (fixed)
Blue ... Engine 3 (fixed)
White ... Engine 1 or 2 or 3 (selective)
How to load the program data using engine_mux
Before loading the LP5562 program data, engine_mux should be written between
the engine selection and loading the firmware.
Engine mux has two different mode, RGB and W.
RGB is used for loading RGB program data, W is used for W program data.
For example, run blinking green channel pattern,
echo 2 > /sys/bus/i2c/devices/xxxx/select_engine # 2 is for green channel
echo "RGB" > /sys/bus/i2c/devices/xxxx/engine_mux # engine mux for RGB
echo 1 > /sys/class/firmware/lp5562/loading
echo "4000600040FF6000" > /sys/class/firmware/lp5562/data
echo 0 > /sys/class/firmware/lp5562/loading
echo 1 > /sys/bus/i2c/devices/xxxx/run_engine
To run a blinking white pattern,
echo 1 or 2 or 3 > /sys/bus/i2c/devices/xxxx/select_engine
echo "W" > /sys/bus/i2c/devices/xxxx/engine_mux
echo 1 > /sys/class/firmware/lp5562/loading
echo "4000600040FF6000" > /sys/class/firmware/lp5562/data
echo 0 > /sys/class/firmware/lp5562/loading
echo 1 > /sys/bus/i2c/devices/xxxx/run_engine
How to load the predefined patterns
Please refer to 'leds-lp55xx.txt"
Setting Current of Each Channel
Like LP5521 and LP5523/55231, LP5562 provides LED current settings.
The 'led_current' and 'max_current' are used.
(Example of Platform data)
To configure the platform specific data, lp55xx_platform_data structure is used.
static struct lp55xx_led_config lp5562_led_config[] = {
{
.name = "R",
.chan_nr = 0,
.led_current = 20,
.max_current = 40,
},
{
.name = "G",
.chan_nr = 1,
.led_current = 20,
.max_current = 40,
},
{
.name = "B",
.chan_nr = 2,
.led_current = 20,
.max_current = 40,
},
{
.name = "W",
.chan_nr = 3,
.led_current = 20,
.max_current = 40,
},
};
static int lp5562_setup(void)
{
/* setup HW resources */
}
static void lp5562_release(void)
{
/* Release HW resources */
}
static void lp5562_enable(bool state)
{
/* Control of chip enable signal */
}
static struct lp55xx_platform_data lp5562_platform_data = {
.led_config = lp5562_led_config,
.num_channels = ARRAY_SIZE(lp5562_led_config),
.setup_resources = lp5562_setup,
.release_resources = lp5562_release,
.enable = lp5562_enable,
};
If the current is set to 0 in the platform data, that channel is
disabled and it is not visible in the sysfs.

46
Documentation/leds/leds-lp55xx.txt
View File

@ -5,7 +5,7 @@ Authors: Milo(Woogyom) Kim <milo.kim@ti.com>
Description
-----------
LP5521, LP5523/55231 have common features as below.
LP5521, LP5523/55231 and LP5562 have common features as below.
Register access via the I2C
Device initialization/deinitialization
@ -116,3 +116,47 @@ To support this, 'run_engine' and 'firmware_cb' are configurable in each driver.
run_engine : Control the selected engine
firmware_cb : The callback function after loading the firmware is done.
Chip specific commands for loading and updating program memory.
( Predefined pattern data )
Without the firmware interface, LP55xx driver provides another method for
loading a LED pattern. That is 'predefined' pattern.
A predefined pattern is defined in the platform data and load it(or them)
via the sysfs if needed.
To use the predefined pattern concept, 'patterns' and 'num_patterns' should be
configured.
Example of predefined pattern data:
/* mode_1: blinking data */
static const u8 mode_1[] = {
0x40, 0x00, 0x60, 0x00, 0x40, 0xFF, 0x60, 0x00,
};
/* mode_2: always on */
static const u8 mode_2[] = { 0x40, 0xFF, };
struct lp55xx_predef_pattern board_led_patterns[] = {
{
.r = mode_1,
.size_r = ARRAY_SIZE(mode_1),
},
{
.b = mode_2,
.size_b = ARRAY_SIZE(mode_2),
},
}
struct lp55xx_platform_data lp5562_pdata = {
...
.patterns = board_led_patterns,
.num_patterns = ARRAY_SIZE(board_led_patterns),
};
Then, mode_1 and mode_2 can be run via through the sysfs.
echo 1 > /sys/bus/i2c/devices/xxxx/led_pattern # red blinking LED pattern
echo 2 > /sys/bus/i2c/devices/xxxx/led_pattern # blue LED always on
To stop running pattern,
echo 0 > /sys/bus/i2c/devices/xxxx/led_pattern

115
drivers/leds/Kconfig
View File

@ -194,8 +194,8 @@ config LEDS_LP3944
module will be called leds-lp3944.
config LEDS_LP55XX_COMMON
tristate "Common Driver for TI/National LP5521 and LP5523/55231"
depends on LEDS_LP5521 || LEDS_LP5523
tristate "Common Driver for TI/National LP5521, LP5523/55231 and LP5562"
depends on LEDS_LP5521 || LEDS_LP5523 || LEDS_LP5562
select FW_LOADER
help
This option supports common operations for LP5521 and LP5523/55231
@ -222,6 +222,16 @@ config LEDS_LP5523
Driver provides direct control via LED class and interface for
programming the engines.
config LEDS_LP5562
tristate "LED Support for TI LP5562 LED driver chip"
depends on LEDS_CLASS && I2C
select LEDS_LP55XX_COMMON
help
If you say yes here you get support for TI LP5562 LED driver.
It is 4 channels chip with programmable engines.
Driver provides direct control via LED class and interface for
programming the engines.
config LEDS_LP8788
tristate "LED support for the TI LP8788 PMIC"
depends on LEDS_CLASS
@ -469,106 +479,7 @@ config LEDS_BLINKM
This option enables support for the BlinkM RGB LED connected
through I2C. Say Y to enable support for the BlinkM LED.
config LEDS_TRIGGERS
bool "LED Trigger support"
depends on LEDS_CLASS
help
This option enables trigger support for the leds class.
These triggers allow kernel events to drive the LEDs and can
be configured via sysfs. If unsure, say Y.
comment "LED Triggers"
config LEDS_TRIGGER_TIMER
tristate "LED Timer Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by a programmable timer
via sysfs. Some LED hardware can be programmed to start
blinking the LED without any further software interaction.
For more details read Documentation/leds/leds-class.txt.
If unsure, say Y.
config LEDS_TRIGGER_ONESHOT
tristate "LED One-shot Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to blink in one-shot pulses with parameters
controlled via sysfs. It's useful to notify the user on
sporadic events, when there are no clear begin and end trap points,
or on dense events, where this blinks the LED at constant rate if
rearmed continuously.
It also shows how to use the led_blink_set_oneshot() function.
If unsure, say Y.
config LEDS_TRIGGER_IDE_DISK
bool "LED IDE Disk Trigger"
depends on IDE_GD_ATA
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by IDE disk activity.
If unsure, say Y.
config LEDS_TRIGGER_HEARTBEAT
tristate "LED Heartbeat Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by a CPU load average.
The flash frequency is a hyperbolic function of the 1-minute
load average.
If unsure, say Y.
config LEDS_TRIGGER_BACKLIGHT
tristate "LED backlight Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled as a backlight device: they
turn off and on when the display is blanked and unblanked.
If unsure, say N.
config LEDS_TRIGGER_CPU
bool "LED CPU Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by active CPUs. This shows
the active CPUs across an array of LEDs so you can see which
CPUs are active on the system at any given moment.
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
help
This allows LEDs to be initialised in the ON state.
If unsure, say Y.
comment "iptables trigger is under Netfilter config (LED target)"
depends on LEDS_TRIGGERS
config LEDS_TRIGGER_TRANSIENT
tristate "LED Transient Trigger"
depends on LEDS_TRIGGERS
help
This allows one time activation of a transient state on
GPIO/PWM based hardware.
If unsure, say Y.
source "drivers/leds/trigger/Kconfig"
endif # NEW_LEDS

11
drivers/leds/Makefile
View File

@ -26,6 +26,7 @@ obj-$(CONFIG_LEDS_LP3944) += leds-lp3944.o
obj-$(CONFIG_LEDS_LP55XX_COMMON) += leds-lp55xx-common.o
obj-$(CONFIG_LEDS_LP5521) += leds-lp5521.o
obj-$(CONFIG_LEDS_LP5523) += leds-lp5523.o
obj-$(CONFIG_LEDS_LP5562) += leds-lp5562.o
obj-$(CONFIG_LEDS_LP8788) += leds-lp8788.o
obj-$(CONFIG_LEDS_TCA6507) += leds-tca6507.o
obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o
@ -57,12 +58,4 @@ obj-$(CONFIG_LEDS_BLINKM) += leds-blinkm.o
obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o
# LED Triggers
obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
obj-$(CONFIG_LEDS_TRIGGER_ONESHOT) += ledtrig-oneshot.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-$(CONFIG_LEDS_TRIGGER_CPU) += ledtrig-cpu.o
obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o
obj-$(CONFIG_LEDS_TRIGGER_TRANSIENT) += ledtrig-transient.o
obj-$(CONFIG_LEDS_TRIGGERS) += trigger/

7
drivers/leds/leds-asic3.c
View File

@ -134,6 +134,7 @@ static int asic3_led_remove(struct platform_device *pdev)
return mfd_cell_disable(pdev);
}
#ifdef CONFIG_PM_SLEEP
static int asic3_led_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
@ -159,11 +160,9 @@ static int asic3_led_resume(struct device *dev)
return ret;
}
#endif
static const struct dev_pm_ops asic3_led_pm_ops = {
.suspend = asic3_led_suspend,
.resume = asic3_led_resume,
};
static SIMPLE_DEV_PM_OPS(asic3_led_pm_ops, asic3_led_suspend, asic3_led_resume);
static struct platform_driver asic3_led_driver = {
.probe = asic3_led_probe,

4
drivers/leds/leds-atmel-pwm.c
View File

@ -113,7 +113,7 @@ static int pwmled_probe(struct platform_device *pdev)
return status;
}
static int __exit pwmled_remove(struct platform_device *pdev)
static int pwmled_remove(struct platform_device *pdev)
{
const struct gpio_led_platform_data *pdata;
struct pwmled *leds;
@ -140,7 +140,7 @@ static struct platform_driver pwmled_driver = {
},
/* REVISIT add suspend() and resume() methods */
.probe = pwmled_probe,
.remove = __exit_p(pwmled_remove),
.remove = pwmled_remove,
};
module_platform_driver(pwmled_driver);

14
drivers/leds/leds-bd2802.c
View File

@ -732,7 +732,7 @@ static int bd2802_probe(struct i2c_client *client,
return ret;
}
static int __exit bd2802_remove(struct i2c_client *client)
static int bd2802_remove(struct i2c_client *client)
{
struct bd2802_led *led = i2c_get_clientdata(client);
int i;
@ -747,8 +747,7 @@ static int __exit bd2802_remove(struct i2c_client *client)
return 0;
}
#ifdef CONFIG_PM
#ifdef CONFIG_PM_SLEEP
static void bd2802_restore_state(struct bd2802_led *led)
{
int i;
@ -785,12 +784,9 @@ static int bd2802_resume(struct device *dev)
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(bd2802_pm, bd2802_suspend, bd2802_resume);
#define BD2802_PM (&bd2802_pm)
#else /* CONFIG_PM */
#define BD2802_PM NULL
#endif
static const struct i2c_device_id bd2802_id[] = {
{ "BD2802", 0 },
@ -801,10 +797,10 @@ MODULE_DEVICE_TABLE(i2c, bd2802_id);
static struct i2c_driver bd2802_i2c_driver = {
.driver = {
.name = "BD2802",
.pm = BD2802_PM,
.pm = &bd2802_pm,
},
.probe = bd2802_probe,
.remove = __exit_p(bd2802_remove),
.remove = bd2802_remove,
.id_table = bd2802_id,
};

2
drivers/leds/leds-lm355x.c
View File

@ -477,6 +477,7 @@ static int lm355x_probe(struct i2c_client *client,
chip->cdev_flash.name = "flash";
chip->cdev_flash.max_brightness = 16;
chip->cdev_flash.brightness_set = lm355x_strobe_brightness_set;
chip->cdev_flash.default_trigger = "flash";
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_flash);
if (err < 0)
@ -486,6 +487,7 @@ static int lm355x_probe(struct i2c_client *client,
chip->cdev_torch.name = "torch";
chip->cdev_torch.max_brightness = 8;
chip->cdev_torch.brightness_set = lm355x_torch_brightness_set;
chip->cdev_torch.default_trigger = "torch";
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_torch);
if (err < 0)

2
drivers/leds/leds-lm3642.c
View File

@ -363,6 +363,7 @@ static int lm3642_probe(struct i2c_client *client,
chip->cdev_flash.name = "flash";
chip->cdev_flash.max_brightness = 16;
chip->cdev_flash.brightness_set = lm3642_strobe_brightness_set;
chip->cdev_flash.default_trigger = "flash";
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_flash);
if (err < 0) {
@ -380,6 +381,7 @@ static int lm3642_probe(struct i2c_client *client,
chip->cdev_torch.name = "torch";
chip->cdev_torch.max_brightness = 8;
chip->cdev_torch.brightness_set = lm3642_torch_brightness_set;
chip->cdev_torch.default_trigger = "torch";
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_torch);
if (err < 0) {

22
drivers/leds/leds-lp5521.c
View File

@ -68,6 +68,18 @@
#define LP5521_ENABLE_RUN_PROGRAM \
(LP5521_ENABLE_DEFAULT | LP5521_EXEC_RUN)
/* CONFIG register */
#define LP5521_PWM_HF 0x40 /* PWM: 0 = 256Hz, 1 = 558Hz */
#define LP5521_PWRSAVE_EN 0x20 /* 1 = Power save mode */
#define LP5521_CP_MODE_OFF 0 /* Charge pump (CP) off */
#define LP5521_CP_MODE_BYPASS 8 /* CP forced to bypass mode */
#define LP5521_CP_MODE_1X5 0x10 /* CP forced to 1.5x mode */
#define LP5521_CP_MODE_AUTO 0x18 /* Automatic mode selection */
#define LP5521_R_TO_BATT 0x04 /* R out: 0 = CP, 1 = Vbat */
#define LP5521_CLK_INT 0x01 /* Internal clock */
#define LP5521_DEFAULT_CFG \
(LP5521_PWM_HF | LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO)
/* Status */
#define LP5521_EXT_CLK_USED 0x08
@ -296,8 +308,11 @@ static int lp5521_post_init_device(struct lp55xx_chip *chip)
/* Set all PWMs to direct control mode */
ret = lp55xx_write(chip, LP5521_REG_OP_MODE, LP5521_CMD_DIRECT);
val = chip->pdata->update_config ?
: (LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT);
/* Update configuration for the clock setting */
val = LP5521_DEFAULT_CFG;
if (!lp55xx_is_extclk_used(chip))
val |= LP5521_CLK_INT;
ret = lp55xx_write(chip, LP5521_REG_CONFIG, val);
if (ret)
return ret;
@ -360,7 +375,8 @@ static ssize_t lp5521_selftest(struct device *dev,
mutex_lock(&chip->lock);
ret = lp5521_run_selftest(chip, buf);
mutex_unlock(&chip->lock);
return sprintf(buf, "%s\n", ret ? "FAIL" : "OK");
return scnprintf(buf, PAGE_SIZE, "%s\n", ret ? "FAIL" : "OK");
}
/* device attributes */

599
drivers/leds/leds-lp5562.c Normal file
View File

@ -0,0 +1,599 @@
/*
* LP5562 LED driver
*
* Copyright (C) 2013 Texas Instruments
*
* Author: Milo(Woogyom) Kim <milo.kim@ti.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/delay.h>
#include <linux/firmware.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/leds.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/platform_data/leds-lp55xx.h>
#include <linux/slab.h>
#include "leds-lp55xx-common.h"
#define LP5562_PROGRAM_LENGTH 32
#define LP5562_MAX_LEDS 4
/* ENABLE Register 00h */
#define LP5562_REG_ENABLE 0x00
#define LP5562_EXEC_ENG1_M 0x30
#define LP5562_EXEC_ENG2_M 0x0C
#define LP5562_EXEC_ENG3_M 0x03
#define LP5562_EXEC_M 0x3F
#define LP5562_MASTER_ENABLE 0x40 /* Chip master enable */
#define LP5562_LOGARITHMIC_PWM 0x80 /* Logarithmic PWM adjustment */
#define LP5562_EXEC_RUN 0x2A
#define LP5562_ENABLE_DEFAULT \
(LP5562_MASTER_ENABLE | LP5562_LOGARITHMIC_PWM)
#define LP5562_ENABLE_RUN_PROGRAM \
(LP5562_ENABLE_DEFAULT | LP5562_EXEC_RUN)
/* OPMODE Register 01h */
#define LP5562_REG_OP_MODE 0x01
#define LP5562_MODE_ENG1_M 0x30
#define LP5562_MODE_ENG2_M 0x0C
#define LP5562_MODE_ENG3_M 0x03
#define LP5562_LOAD_ENG1 0x10
#define LP5562_LOAD_ENG2 0x04
#define LP5562_LOAD_ENG3 0x01
#define LP5562_RUN_ENG1 0x20
#define LP5562_RUN_ENG2 0x08
#define LP5562_RUN_ENG3 0x02
#define LP5562_ENG1_IS_LOADING(mode) \
((mode & LP5562_MODE_ENG1_M) == LP5562_LOAD_ENG1)
#define LP5562_ENG2_IS_LOADING(mode) \
((mode & LP5562_MODE_ENG2_M) == LP5562_LOAD_ENG2)
#define LP5562_ENG3_IS_LOADING(mode) \
((mode & LP5562_MODE_ENG3_M) == LP5562_LOAD_ENG3)
/* BRIGHTNESS Registers */
#define LP5562_REG_R_PWM 0x04
#define LP5562_REG_G_PWM 0x03
#define LP5562_REG_B_PWM 0x02
#define LP5562_REG_W_PWM 0x0E
/* CURRENT Registers */
#define LP5562_REG_R_CURRENT 0x07
#define LP5562_REG_G_CURRENT 0x06
#define LP5562_REG_B_CURRENT 0x05
#define LP5562_REG_W_CURRENT 0x0F
/* CONFIG Register 08h */
#define LP5562_REG_CONFIG 0x08
#define LP5562_PWM_HF 0x40
#define LP5562_PWRSAVE_EN 0x20
#define LP5562_CLK_INT 0x01 /* Internal clock */
#define LP5562_DEFAULT_CFG (LP5562_PWM_HF | LP5562_PWRSAVE_EN)
/* RESET Register 0Dh */
#define LP5562_REG_RESET 0x0D
#define LP5562_RESET 0xFF
/* PROGRAM ENGINE Registers */
#define LP5562_REG_PROG_MEM_ENG1 0x10
#define LP5562_REG_PROG_MEM_ENG2 0x30
#define LP5562_REG_PROG_MEM_ENG3 0x50
/* LEDMAP Register 70h */
#define LP5562_REG_ENG_SEL 0x70
#define LP5562_ENG_SEL_PWM 0
#define LP5562_ENG_FOR_RGB_M 0x3F
#define LP5562_ENG_SEL_RGB 0x1B /* R:ENG1, G:ENG2, B:ENG3 */
#define LP5562_ENG_FOR_W_M 0xC0
#define LP5562_ENG1_FOR_W 0x40 /* W:ENG1 */
#define LP5562_ENG2_FOR_W 0x80 /* W:ENG2 */
#define LP5562_ENG3_FOR_W 0xC0 /* W:ENG3 */
/* Program Commands */
#define LP5562_CMD_DISABLE 0x00
#define LP5562_CMD_LOAD 0x15
#define LP5562_CMD_RUN 0x2A
#define LP5562_CMD_DIRECT 0x3F
#define LP5562_PATTERN_OFF 0
static inline void lp5562_wait_opmode_done(void)
{
/* operation mode change needs to be longer than 153 us */
usleep_range(200, 300);
}
static inline void lp5562_wait_enable_done(void)
{
/* it takes more 488 us to update ENABLE register */
usleep_range(500, 600);
}
static void lp5562_set_led_current(struct lp55xx_led *led, u8 led_current)
{
u8 addr[] = {
LP5562_REG_R_CURRENT,
LP5562_REG_G_CURRENT,
LP5562_REG_B_CURRENT,
LP5562_REG_W_CURRENT,
};
led->led_current = led_current;
lp55xx_write(led->chip, addr[led->chan_nr], led_current);
}
static void lp5562_load_engine(struct lp55xx_chip *chip)
{
enum lp55xx_engine_index idx = chip->engine_idx;
u8 mask[] = {
[LP55XX_ENGINE_1] = LP5562_MODE_ENG1_M,
[LP55XX_ENGINE_2] = LP5562_MODE_ENG2_M,
[LP55XX_ENGINE_3] = LP5562_MODE_ENG3_M,
};
u8 val[] = {
[LP55XX_ENGINE_1] = LP5562_LOAD_ENG1,
[LP55XX_ENGINE_2] = LP5562_LOAD_ENG2,
[LP55XX_ENGINE_3] = LP5562_LOAD_ENG3,
};
lp55xx_update_bits(chip, LP5562_REG_OP_MODE, mask[idx], val[idx]);
lp5562_wait_opmode_done();
}
static void lp5562_stop_engine(struct lp55xx_chip *chip)
{
lp55xx_write(chip, LP5562_REG_OP_MODE, LP5562_CMD_DISABLE);
lp5562_wait_opmode_done();
}
static void lp5562_run_engine(struct lp55xx_chip *chip, bool start)
{
int ret;
u8 mode;
u8 exec;
/* stop engine */
if (!start) {
lp55xx_write(chip, LP5562_REG_ENABLE, LP5562_ENABLE_DEFAULT);
lp5562_wait_enable_done();
lp5562_stop_engine(chip);
lp55xx_write(chip, LP5562_REG_ENG_SEL, LP5562_ENG_SEL_PWM);
lp55xx_write(chip, LP5562_REG_OP_MODE, LP5562_CMD_DIRECT);
lp5562_wait_opmode_done();
return;
}
/*
* To run the engine,
* operation mode and enable register should updated at the same time
*/
ret = lp55xx_read(chip, LP5562_REG_OP_MODE, &mode);
if (ret)
return;
ret = lp55xx_read(chip, LP5562_REG_ENABLE, &exec);
if (ret)
return;
/* change operation mode to RUN only when each engine is loading */
if (LP5562_ENG1_IS_LOADING(mode)) {
mode = (mode & ~LP5562_MODE_ENG1_M) | LP5562_RUN_ENG1;
exec = (exec & ~LP5562_EXEC_ENG1_M) | LP5562_RUN_ENG1;
}
if (LP5562_ENG2_IS_LOADING(mode)) {
mode = (mode & ~LP5562_MODE_ENG2_M) | LP5562_RUN_ENG2;
exec = (exec & ~LP5562_EXEC_ENG2_M) | LP5562_RUN_ENG2;
}
if (LP5562_ENG3_IS_LOADING(mode)) {
mode = (mode & ~LP5562_MODE_ENG3_M) | LP5562_RUN_ENG3;
exec = (exec & ~LP5562_EXEC_ENG3_M) | LP5562_RUN_ENG3;
}
lp55xx_write(chip, LP5562_REG_OP_MODE, mode);
lp5562_wait_opmode_done();
lp55xx_update_bits(chip, LP5562_REG_ENABLE, LP5562_EXEC_M, exec);
lp5562_wait_enable_done();
}
static int lp5562_update_firmware(struct lp55xx_chip *chip,
const u8 *data, size_t size)
{
enum lp55xx_engine_index idx = chip->engine_idx;
u8 pattern[LP5562_PROGRAM_LENGTH] = {0};
u8 addr[] = {
[LP55XX_ENGINE_1] = LP5562_REG_PROG_MEM_ENG1,
[LP55XX_ENGINE_2] = LP5562_REG_PROG_MEM_ENG2,
[LP55XX_ENGINE_3] = LP5562_REG_PROG_MEM_ENG3,
};
unsigned cmd;
char c[3];
int program_size;
int nrchars;
int offset = 0;
int ret;
int i;
/* clear program memory before updating */
for (i = 0; i < LP5562_PROGRAM_LENGTH; i++)
lp55xx_write(chip, addr[idx] + i, 0);
i = 0;
while ((offset < size - 1) && (i < LP5562_PROGRAM_LENGTH)) {
/* separate sscanfs because length is working only for %s */
ret = sscanf(data + offset, "%2s%n ", c, &nrchars);
if (ret != 1)
goto err;
ret = sscanf(c, "%2x", &cmd);
if (ret != 1)
goto err;
pattern[i] = (u8)cmd;
offset += nrchars;
i++;
}
/* Each instruction is 16bit long. Check that length is even */
if (i % 2)
goto err;
program_size = i;
for (i = 0; i < program_size; i++)
lp55xx_write(chip, addr[idx] + i, pattern[i]);
return 0;
err:
dev_err(&chip->cl->dev, "wrong pattern format\n");
return -EINVAL;
}
static void lp5562_firmware_loaded(struct lp55xx_chip *chip)
{
const struct firmware *fw = chip->fw;
if (fw->size > LP5562_PROGRAM_LENGTH) {
dev_err(&chip->cl->dev, "firmware data size overflow: %zu\n",
fw->size);
return;
}
/*
* Program momery sequence
* 1) set engine mode to "LOAD"
* 2) write firmware data into program memory
*/
lp5562_load_engine(chip);
lp5562_update_firmware(chip, fw->data, fw->size);
}
static int lp5562_post_init_device(struct lp55xx_chip *chip)
{
int ret;
u8 cfg = LP5562_DEFAULT_CFG;
/* Set all PWMs to direct control mode */
ret = lp55xx_write(chip, LP5562_REG_OP_MODE, LP5562_CMD_DIRECT);
if (ret)
return ret;
lp5562_wait_opmode_done();
/* Update configuration for the clock setting */
if (!lp55xx_is_extclk_used(chip))
cfg |= LP5562_CLK_INT;
ret = lp55xx_write(chip, LP5562_REG_CONFIG, cfg);
if (ret)
return ret;
/* Initialize all channels PWM to zero -> leds off */
lp55xx_write(chip, LP5562_REG_R_PWM, 0);
lp55xx_write(chip, LP5562_REG_G_PWM, 0);
lp55xx_write(chip, LP5562_REG_B_PWM, 0);
lp55xx_write(chip, LP5562_REG_W_PWM, 0);
/* Set LED map as register PWM by default */
lp55xx_write(chip, LP5562_REG_ENG_SEL, LP5562_ENG_SEL_PWM);
return 0;
}
static void lp5562_led_brightness_work(struct work_struct *work)
{
struct lp55xx_led *led = container_of(work, struct lp55xx_led,
brightness_work);
struct lp55xx_chip *chip = led->chip;
u8 addr[] = {
LP5562_REG_R_PWM,
LP5562_REG_G_PWM,
LP5562_REG_B_PWM,
LP5562_REG_W_PWM,
};
mutex_lock(&chip->lock);
lp55xx_write(chip, addr[led->chan_nr], led->brightness);
mutex_unlock(&chip->lock);
}
static void lp5562_write_program_memory(struct lp55xx_chip *chip,
u8 base, const u8 *rgb, int size)
{
int i;
if (!rgb || size <= 0)
return;
for (i = 0; i < size; i++)
lp55xx_write(chip, base + i, *(rgb + i));
lp55xx_write(chip, base + i, 0);
lp55xx_write(chip, base + i + 1, 0);
}
/* check the size of program count */
static inline bool _is_pc_overflow(struct lp55xx_predef_pattern *ptn)
{
return (ptn->size_r >= LP5562_PROGRAM_LENGTH ||
ptn->size_g >= LP5562_PROGRAM_LENGTH ||
ptn->size_b >= LP5562_PROGRAM_LENGTH);
}
static int lp5562_run_predef_led_pattern(struct lp55xx_chip *chip, int mode)
{
struct lp55xx_predef_pattern *ptn;
int i;
if (mode == LP5562_PATTERN_OFF) {
lp5562_run_engine(chip, false);
return 0;
}
ptn = chip->pdata->patterns + (mode - 1);
if (!ptn || _is_pc_overflow(ptn)) {
dev_err(&chip->cl->dev, "invalid pattern data\n");
return -EINVAL;
}
lp5562_stop_engine(chip);
/* Set LED map as RGB */
lp55xx_write(chip, LP5562_REG_ENG_SEL, LP5562_ENG_SEL_RGB);
/* Load engines */
for (i = LP55XX_ENGINE_1; i <= LP55XX_ENGINE_3; i++) {
chip->engine_idx = i;
lp5562_load_engine(chip);
}
/* Clear program registers */
lp55xx_write(chip, LP5562_REG_PROG_MEM_ENG1, 0);
lp55xx_write(chip, LP5562_REG_PROG_MEM_ENG1 + 1, 0);
lp55xx_write(chip, LP5562_REG_PROG_MEM_ENG2, 0);
lp55xx_write(chip, LP5562_REG_PROG_MEM_ENG2 + 1, 0);
lp55xx_write(chip, LP5562_REG_PROG_MEM_ENG3, 0);
lp55xx_write(chip, LP5562_REG_PROG_MEM_ENG3 + 1, 0);
/* Program engines */
lp5562_write_program_memory(chip, LP5562_REG_PROG_MEM_ENG1,
ptn->r, ptn->size_r);
lp5562_write_program_memory(chip, LP5562_REG_PROG_MEM_ENG2,
ptn->g, ptn->size_g);
lp5562_write_program_memory(chip, LP5562_REG_PROG_MEM_ENG3,
ptn->b, ptn->size_b);
/* Run engines */
lp5562_run_engine(chip, true);
return 0;
}
static ssize_t lp5562_store_pattern(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
{
struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
struct lp55xx_chip *chip = led->chip;
struct lp55xx_predef_pattern *ptn = chip->pdata->patterns;
int num_patterns = chip->pdata->num_patterns;
unsigned long mode;
int ret;
ret = kstrtoul(buf, 0, &mode);
if (ret)
return ret;
if (mode > num_patterns || !ptn)
return -EINVAL;
mutex_lock(&chip->lock);
ret = lp5562_run_predef_led_pattern(chip, mode);
mutex_unlock(&chip->lock);
if (ret)
return ret;
return len;
}
static ssize_t lp5562_store_engine_mux(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
{
struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
struct lp55xx_chip *chip = led->chip;
u8 mask;
u8 val;
/* LED map
* R ... Engine 1 (fixed)
* G ... Engine 2 (fixed)
* B ... Engine 3 (fixed)
* W ... Engine 1 or 2 or 3
*/
if (sysfs_streq(buf, "RGB")) {
mask = LP5562_ENG_FOR_RGB_M;
val = LP5562_ENG_SEL_RGB;
} else if (sysfs_streq(buf, "W")) {
enum lp55xx_engine_index idx = chip->engine_idx;
mask = LP5562_ENG_FOR_W_M;
switch (idx) {
case LP55XX_ENGINE_1:
val = LP5562_ENG1_FOR_W;
break;
case LP55XX_ENGINE_2:
val = LP5562_ENG2_FOR_W;
break;
case LP55XX_ENGINE_3:
val = LP5562_ENG3_FOR_W;
break;
default:
return -EINVAL;
}
} else {
dev_err(dev, "choose RGB or W\n");
return -EINVAL;
}
mutex_lock(&chip->lock);
lp55xx_update_bits(chip, LP5562_REG_ENG_SEL, mask, val);
mutex_unlock(&chip->lock);
return len;
}
static DEVICE_ATTR(led_pattern, S_IWUSR, NULL, lp5562_store_pattern);
static DEVICE_ATTR(engine_mux, S_IWUSR, NULL, lp5562_store_engine_mux);
static struct attribute *lp5562_attributes[] = {
&dev_attr_led_pattern.attr,
&dev_attr_engine_mux.attr,
NULL,
};
static const struct attribute_group lp5562_group = {
.attrs = lp5562_attributes,
};
/* Chip specific configurations */
static struct lp55xx_device_config lp5562_cfg = {
.max_channel = LP5562_MAX_LEDS,
.reset = {
.addr = LP5562_REG_RESET,
.val = LP5562_RESET,
},
.enable = {
.addr = LP5562_REG_ENABLE,
.val = LP5562_ENABLE_DEFAULT,
},
.post_init_device = lp5562_post_init_device,
.set_led_current = lp5562_set_led_current,
.brightness_work_fn = lp5562_led_brightness_work,
.run_engine = lp5562_run_engine,
.firmware_cb = lp5562_firmware_loaded,
.dev_attr_group = &lp5562_group,
};
static int lp5562_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int ret;
struct lp55xx_chip *chip;
struct lp55xx_led *led;
struct lp55xx_platform_data *pdata = client->dev.platform_data;
if (!pdata) {
dev_err(&client->dev, "no platform data\n");
return -EINVAL;
}
chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
if (!chip)
return -ENOMEM;
led = devm_kzalloc(&client->dev,
sizeof(*led) * pdata->num_channels, GFP_KERNEL);
if (!led)
return -ENOMEM;
chip->cl = client;
chip->pdata = pdata;
chip->cfg = &lp5562_cfg;
mutex_init(&chip->lock);
i2c_set_clientdata(client, led);
ret = lp55xx_init_device(chip);
if (ret)
goto err_init;
ret = lp55xx_register_leds(led, chip);
if (ret)
goto err_register_leds;
ret = lp55xx_register_sysfs(chip);
if (ret) {
dev_err(&client->dev, "registering sysfs failed\n");
goto err_register_sysfs;
}
return 0;
err_register_sysfs:
lp55xx_unregister_leds(led, chip);
err_register_leds:
lp55xx_deinit_device(chip);
err_init:
return ret;
}
static int lp5562_remove(struct i2c_client *client)
{
struct lp55xx_led *led = i2c_get_clientdata(client);
struct lp55xx_chip *chip = led->chip;
lp5562_stop_engine(chip);
lp55xx_unregister_sysfs(chip);
lp55xx_unregister_leds(led, chip);
lp55xx_deinit_device(chip);
return 0;
}
static const struct i2c_device_id lp5562_id[] = {
{ "lp5562", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, lp5562_id);
static struct i2c_driver lp5562_driver = {
.driver = {
.name = "lp5562",
},
.probe = lp5562_probe,
.remove = lp5562_remove,
.id_table = lp5562_id,
};
module_i2c_driver(lp5562_driver);
MODULE_DESCRIPTION("Texas Instruments LP5562 LED Driver");
MODULE_AUTHOR("Milo Kim");
MODULE_LICENSE("GPL");

42
drivers/leds/leds-lp55xx-common.c
View File

@ -1,5 +1,5 @@
/*
* LP5521/LP5523/LP55231 Common Driver
* LP5521/LP5523/LP55231/LP5562 Common Driver
*
* Copyright 2012 Texas Instruments
*
@ -12,6 +12,7 @@
* Derived from leds-lp5521.c, leds-lp5523.c
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/i2c.h>
@ -21,6 +22,9 @@
#include "leds-lp55xx-common.h"
/* External clock rate */
#define LP55XX_CLK_32K 32768
static struct lp55xx_led *cdev_to_lp55xx_led(struct led_classdev *cdev)
{
return container_of(cdev, struct lp55xx_led, cdev);
@ -80,7 +84,7 @@ static ssize_t lp55xx_show_current(struct device *dev,
{
struct lp55xx_led *led = dev_to_lp55xx_led(dev);
return sprintf(buf, "%d\n", led->led_current);
return scnprintf(buf, PAGE_SIZE, "%d\n", led->led_current);
}
static ssize_t lp55xx_store_current(struct device *dev,
@ -113,7 +117,7 @@ static ssize_t lp55xx_show_max_current(struct device *dev,
{
struct lp55xx_led *led = dev_to_lp55xx_led(dev);
return sprintf(buf, "%d\n", led->max_current);
return scnprintf(buf, PAGE_SIZE, "%d\n", led->max_current);
}
static DEVICE_ATTR(led_current, S_IRUGO | S_IWUSR, lp55xx_show_current,
@ -357,6 +361,35 @@ int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg, u8 mask, u8 val)
}
EXPORT_SYMBOL_GPL(lp55xx_update_bits);
bool lp55xx_is_extclk_used(struct lp55xx_chip *chip)
{
struct clk *clk;
int err;
clk = devm_clk_get(&chip->cl->dev, "32k_clk");
if (IS_ERR(clk))
goto use_internal_clk;
err = clk_prepare_enable(clk);
if (err)
goto use_internal_clk;
if (clk_get_rate(clk) != LP55XX_CLK_32K) {
clk_disable_unprepare(clk);
goto use_internal_clk;
}
dev_info(&chip->cl->dev, "%dHz external clock used\n", LP55XX_CLK_32K);
chip->clk = clk;
return true;
use_internal_clk:
dev_info(&chip->cl->dev, "internal clock used\n");
return false;
}
EXPORT_SYMBOL_GPL(lp55xx_is_extclk_used);
int lp55xx_init_device(struct lp55xx_chip *chip)
{
struct lp55xx_platform_data *pdata;
@ -421,6 +454,9 @@ void lp55xx_deinit_device(struct lp55xx_chip *chip)
{
struct lp55xx_platform_data *pdata = chip->pdata;
if (chip->clk)
clk_disable_unprepare(chip->clk);
if (pdata->enable)
pdata->enable(0);

4
drivers/leds/leds-lp55xx-common.h
View File

@ -83,6 +83,7 @@ struct lp55xx_device_config {
*/
struct lp55xx_chip {
struct i2c_client *cl;
struct clk *clk;
struct lp55xx_platform_data *pdata;
struct mutex lock; /* lock for user-space interface */
int num_leds;
@ -117,6 +118,9 @@ extern int lp55xx_read(struct lp55xx_chip *chip, u8 reg, u8 *val);
extern int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg,
u8 mask, u8 val);
/* external clock detection */
extern bool lp55xx_is_extclk_used(struct lp55xx_chip *chip);
/* common device init/deinit functions */
extern int lp55xx_init_device(struct lp55xx_chip *chip);
extern void lp55xx_deinit_device(struct lp55xx_chip *chip);

5
drivers/leds/leds-lt3593.c
View File

@ -106,8 +106,9 @@ static int create_lt3593_led(const struct gpio_led *template,
if (!template->retain_state_suspended)
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
ret = devm_gpio_request_one(parent, template->gpio,
GPIOF_DIR_OUT | state, template->name);
ret = devm_gpio_request_one(parent, template->gpio, state ?
GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
template->name);
if (ret < 0)
return ret;

44
drivers/leds/leds-ns2.c
View File

@ -193,7 +193,8 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat,
enum ns2_led_modes mode;
ret = devm_gpio_request_one(&pdev->dev, template->cmd,
GPIOF_DIR_OUT | gpio_get_value(template->cmd),
gpio_get_value(template->cmd) ?
GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
template->name);
if (ret) {
dev_err(&pdev->dev, "%s: failed to setup command GPIO\n",
@ -202,7 +203,8 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat,
}
ret = devm_gpio_request_one(&pdev->dev, template->slow,
GPIOF_DIR_OUT | gpio_get_value(template->slow),
gpio_get_value(template->slow) ?
GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
template->name);
if (ret) {
dev_err(&pdev->dev, "%s: failed to setup slow GPIO\n",
@ -306,10 +308,21 @@ static const struct of_device_id of_ns2_leds_match[] = {
};
#endif /* CONFIG_OF_GPIO */
struct ns2_led_priv {
int num_leds;
struct ns2_led_data leds_data[];
};
static inline int sizeof_ns2_led_priv(int num_leds)
{
return sizeof(struct ns2_led_priv) +
(sizeof(struct ns2_led_data) * num_leds);
}
static int ns2_led_probe(struct platform_device *pdev)
{
struct ns2_led_platform_data *pdata = pdev->dev.platform_data;
struct ns2_led_data *leds_data;
struct ns2_led_priv *priv;
int i;
int ret;
@ -330,21 +343,23 @@ static int ns2_led_probe(struct platform_device *pdev)
return -EINVAL;
#endif /* CONFIG_OF_GPIO */
leds_data = devm_kzalloc(&pdev->dev, sizeof(struct ns2_led_data) *
pdata->num_leds, GFP_KERNEL);
if (!leds_data)
priv = devm_kzalloc(&pdev->dev,
sizeof_ns2_led_priv(pdata->num_leds), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->num_leds = pdata->num_leds;
for (i = 0; i < pdata->num_leds; i++) {
ret = create_ns2_led(pdev, &leds_data[i], &pdata->leds[i]);
for (i = 0; i < priv->num_leds; i++) {
ret = create_ns2_led(pdev, &priv->leds_data[i],
&pdata->leds[i]);
if (ret < 0) {
for (i = i - 1; i >= 0; i--)
delete_ns2_led(&leds_data[i]);
delete_ns2_led(&priv->leds_data[i]);
return ret;
}
}
platform_set_drvdata(pdev, leds_data);
platform_set_drvdata(pdev, priv);
return 0;
}
@ -352,13 +367,12 @@ static int ns2_led_probe(struct platform_device *pdev)
static int ns2_led_remove(struct platform_device *pdev)
{
int i;
struct ns2_led_platform_data *pdata = pdev->dev.platform_data;
struct ns2_led_data *leds_data;
struct ns2_led_priv *priv;
leds_data = platform_get_drvdata(pdev);
priv = platform_get_drvdata(pdev);
for (i = 0; i < pdata->num_leds; i++)
delete_ns2_led(&leds_data[i]);
for (i = 0; i < priv->num_leds; i++)
delete_ns2_led(&priv->leds_data[i]);
platform_set_drvdata(pdev, NULL);

50
drivers/leds/leds-pwm.c
View File

@ -23,12 +23,16 @@
#include <linux/pwm.h>
#include <linux/leds_pwm.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
struct led_pwm_data {
struct led_classdev cdev;
struct pwm_device *pwm;
struct work_struct work;
unsigned int active_low;
unsigned int period;
int duty;
bool can_sleep;
};
struct led_pwm_priv {
@ -36,6 +40,26 @@ struct led_pwm_priv {
struct led_pwm_data leds[0];
};
static void __led_pwm_set(struct led_pwm_data *led_dat)
{
int new_duty = led_dat->duty;
pwm_config(led_dat->pwm, new_duty, led_dat->period);
if (new_duty == 0)
pwm_disable(led_dat->pwm);
else
pwm_enable(led_dat->pwm);
}
static void led_pwm_work(struct work_struct *work)
{
struct led_pwm_data *led_dat =
container_of(work, struct led_pwm_data, work);
__led_pwm_set(led_dat);
}
static void led_pwm_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
@ -44,13 +68,12 @@ static void led_pwm_set(struct led_classdev *led_cdev,
unsigned int max = led_dat->cdev.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);
}
led_dat->duty = brightness * period / max;
if (led_dat->can_sleep)
schedule_work(&led_dat->work);
else
__led_pwm_set(led_dat);
}
static inline size_t sizeof_pwm_leds_priv(int num_leds)
@ -100,6 +123,10 @@ static struct led_pwm_priv *led_pwm_create_of(struct platform_device *pdev)
led_dat->cdev.brightness = LED_OFF;
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
led_dat->can_sleep = pwm_can_sleep(led_dat->pwm);
if (led_dat->can_sleep)
INIT_WORK(&led_dat->work, led_pwm_work);
ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
if (ret < 0) {
dev_err(&pdev->dev, "failed to register for %s\n",
@ -153,6 +180,10 @@ static int led_pwm_probe(struct platform_device *pdev)
led_dat->cdev.max_brightness = cur_led->max_brightness;
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
led_dat->can_sleep = pwm_can_sleep(led_dat->pwm);
if (led_dat->can_sleep)
INIT_WORK(&led_dat->work, led_pwm_work);
ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
if (ret < 0)
goto err;
@ -180,8 +211,11 @@ static int led_pwm_remove(struct platform_device *pdev)
struct led_pwm_priv *priv = platform_get_drvdata(pdev);
int i;
for (i = 0; i < priv->num_leds; i++)
for (i = 0; i < priv->num_leds; i++) {
led_classdev_unregister(&priv->leds[i].cdev);
if (priv->leds[i].can_sleep)
cancel_work_sync(&priv->leds[i].work);
}
return 0;
}

3
drivers/leds/leds-renesas-tpu.c
View File

@ -205,7 +205,8 @@ static void r_tpu_set_pin(struct r_tpu_priv *p, enum r_tpu_pin new_state,
gpio_free(cfg->pin_gpio_fn);
if (new_state == R_TPU_PIN_GPIO)
gpio_request_one(cfg->pin_gpio, GPIOF_DIR_OUT | !!brightness,
gpio_request_one(cfg->pin_gpio, !!brightness ?
GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
cfg->name);
if (new_state == R_TPU_PIN_GPIO_FN)

4
drivers/leds/leds-tca6507.c
View File

@ -85,6 +85,7 @@
#include <linux/gpio.h>
#include <linux/workqueue.h>
#include <linux/leds-tca6507.h>
#include <linux/of.h>
/* LED select registers determine the source that drives LED outputs */
#define TCA6507_LS_LED_OFF 0x0 /* Output HI-Z (off) */
@ -724,7 +725,6 @@ tca6507_led_dt_init(struct i2c_client *client)
return ERR_PTR(-ENODEV);
}
#define of_tca6507_leds_match NULL
#endif
static int tca6507_probe(struct i2c_client *client,
@ -813,7 +813,7 @@ static struct i2c_driver tca6507_driver = {
.driver = {
.name = "leds-tca6507",
.owner = THIS_MODULE,
.of_match_table = of_tca6507_leds_match,
.of_match_table = of_match_ptr(of_tca6507_leds_match),
},
.probe = tca6507_probe,
.remove = tca6507_remove,

5
drivers/leds/leds-wm8350.c
View File

@ -129,7 +129,10 @@ static void wm8350_led_disable(struct wm8350_led *led)
ret = regulator_disable(led->isink);
if (ret != 0) {
dev_err(led->cdev.dev, "Failed to disable ISINK: %d\n", ret);
regulator_enable(led->dcdc);
ret = regulator_enable(led->dcdc);
if (ret != 0)
dev_err(led->cdev.dev, "Failed to reenable DCDC: %d\n",
ret);
return;
}

111
drivers/leds/trigger/Kconfig Normal file
View File

@ -0,0 +1,111 @@
menuconfig LEDS_TRIGGERS
bool "LED Trigger support"
depends on LEDS_CLASS
help
This option enables trigger support for the leds class.
These triggers allow kernel events to drive the LEDs and can
be configured via sysfs. If unsure, say Y.
if LEDS_TRIGGERS
config LEDS_TRIGGER_TIMER
tristate "LED Timer Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by a programmable timer
via sysfs. Some LED hardware can be programmed to start
blinking the LED without any further software interaction.
For more details read Documentation/leds/leds-class.txt.
If unsure, say Y.
config LEDS_TRIGGER_ONESHOT
tristate "LED One-shot Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to blink in one-shot pulses with parameters
controlled via sysfs. It's useful to notify the user on
sporadic events, when there are no clear begin and end trap points,
or on dense events, where this blinks the LED at constant rate if
rearmed continuously.
It also shows how to use the led_blink_set_oneshot() function.
If unsure, say Y.
config LEDS_TRIGGER_IDE_DISK
bool "LED IDE Disk Trigger"
depends on IDE_GD_ATA
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by IDE disk activity.
If unsure, say Y.
config LEDS_TRIGGER_HEARTBEAT
tristate "LED Heartbeat Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by a CPU load average.
The flash frequency is a hyperbolic function of the 1-minute
load average.
If unsure, say Y.
config LEDS_TRIGGER_BACKLIGHT
tristate "LED backlight Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled as a backlight device: they
turn off and on when the display is blanked and unblanked.
If unsure, say N.
config LEDS_TRIGGER_CPU
bool "LED CPU Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by active CPUs. This shows
the active CPUs across an array of LEDs so you can see which
CPUs are active on the system at any given moment.
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
help
This allows LEDs to be initialised in the ON state.
If unsure, say Y.
comment "iptables trigger is under Netfilter config (LED target)"
depends on LEDS_TRIGGERS
config LEDS_TRIGGER_TRANSIENT
tristate "LED Transient Trigger"
depends on LEDS_TRIGGERS
help
This allows one time activation of a transient state on
GPIO/PWM based hardware.
If unsure, say Y.
config LEDS_TRIGGER_CAMERA
tristate "LED Camera Flash/Torch Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled as a camera flash/torch device.
This enables direct flash/torch on/off by the driver, kernel space.
If unsure, say Y.
endif # LEDS_TRIGGERS

10
drivers/leds/trigger/Makefile Normal file
View File

@ -0,0 +1,10 @@
obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
obj-$(CONFIG_LEDS_TRIGGER_ONESHOT) += ledtrig-oneshot.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-$(CONFIG_LEDS_TRIGGER_CPU) += ledtrig-cpu.o
obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o
obj-$(CONFIG_LEDS_TRIGGER_TRANSIENT) += ledtrig-transient.o
obj-$(CONFIG_LEDS_TRIGGER_CAMERA) += ledtrig-camera.o

2
drivers/leds/ledtrig-backlight.c → drivers/leds/trigger/ledtrig-backlight.c
View File

@ -16,7 +16,7 @@
#include <linux/init.h>
#include <linux/fb.h>
#include <linux/leds.h>
#include "leds.h"
#include "../leds.h"
#define BLANK 1
#define UNBLANK 0

57
drivers/leds/trigger/ledtrig-camera.c Normal file
View File

@ -0,0 +1,57 @@
/*
* Camera Flash and Torch On/Off Trigger
*
* based on ledtrig-ide-disk.c
*
* Copyright 2013 Texas Instruments
*
* Author: Milo(Woogyom) Kim <milo.kim@ti.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/leds.h>
DEFINE_LED_TRIGGER(ledtrig_flash);
DEFINE_LED_TRIGGER(ledtrig_torch);
void ledtrig_flash_ctrl(bool on)
{
enum led_brightness brt = on ? LED_FULL : LED_OFF;
led_trigger_event(ledtrig_flash, brt);
}
EXPORT_SYMBOL_GPL(ledtrig_flash_ctrl);
void ledtrig_torch_ctrl(bool on)
{
enum led_brightness brt = on ? LED_FULL : LED_OFF;
led_trigger_event(ledtrig_torch, brt);
}
EXPORT_SYMBOL_GPL(ledtrig_torch_ctrl);
static int __init ledtrig_camera_init(void)
{
led_trigger_register_simple("flash", &ledtrig_flash);
led_trigger_register_simple("torch", &ledtrig_torch);
return 0;
}
module_init(ledtrig_camera_init);
static void __exit ledtrig_camera_exit(void)
{
led_trigger_unregister_simple(ledtrig_torch);
led_trigger_unregister_simple(ledtrig_flash);
}
module_exit(ledtrig_camera_exit);
MODULE_DESCRIPTION("LED Trigger for Camera Flash/Torch Control");
MODULE_AUTHOR("Milo Kim");
MODULE_LICENSE("GPL");

2
drivers/leds/ledtrig-cpu.c → drivers/leds/trigger/ledtrig-cpu.c
View File

@ -26,7 +26,7 @@
#include <linux/percpu.h>
#include <linux/syscore_ops.h>
#include <linux/rwsem.h>
#include "leds.h"
#include "../leds.h"
#define MAX_NAME_LEN 8

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

@ -15,7 +15,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/leds.h>
#include "leds.h"
#include "../leds.h"
static void defon_trig_activate(struct led_classdev *led_cdev)
{

2
drivers/leds/ledtrig-gpio.c → drivers/leds/trigger/ledtrig-gpio.c
View File

@ -17,7 +17,7 @@
#include <linux/workqueue.h>
#include <linux/leds.h>
#include <linux/slab.h>
#include "leds.h"
#include "../leds.h"
struct gpio_trig_data {
struct led_classdev *led;

2
drivers/leds/ledtrig-heartbeat.c → drivers/leds/trigger/ledtrig-heartbeat.c
View File

@ -19,7 +19,7 @@
#include <linux/sched.h>
#include <linux/leds.h>
#include <linux/reboot.h>
#include "leds.h"
#include "../leds.h"
static int panic_heartbeats;

0
drivers/leds/ledtrig-ide-disk.c → drivers/leds/trigger/ledtrig-ide-disk.c
View File

2
drivers/leds/ledtrig-oneshot.c → drivers/leds/trigger/ledtrig-oneshot.c
View File

@ -18,7 +18,7 @@
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/leds.h>
#include "leds.h"
#include "../leds.h"
#define DEFAULT_DELAY 100

1
drivers/leds/ledtrig-timer.c → drivers/leds/trigger/ledtrig-timer.c
View File

@ -17,7 +17,6 @@
#include <linux/device.h>
#include <linux/ctype.h>
#include <linux/leds.h>
#include "leds.h"
static ssize_t led_delay_on_show(struct device *dev,
struct device_attribute *attr, char *buf)

2
drivers/leds/ledtrig-transient.c → drivers/leds/trigger/ledtrig-transient.c
View File

@ -25,7 +25,7 @@
#include <linux/slab.h>
#include <linux/timer.h>
#include <linux/leds.h>
#include "leds.h"
#include "../leds.h"
struct transient_trig_data {
int activate;

33
include/linux/leds.h
View File

@ -142,6 +142,10 @@ extern void led_set_brightness(struct led_classdev *led_cdev,
/*
* LED Triggers
*/
/* Registration functions for simple triggers */
#define DEFINE_LED_TRIGGER(x) static struct led_trigger *x;
#define DEFINE_LED_TRIGGER_GLOBAL(x) struct led_trigger *x;
#ifdef CONFIG_LEDS_TRIGGERS
#define TRIG_NAME_MAX 50
@ -164,9 +168,6 @@ struct led_trigger {
extern int led_trigger_register(struct led_trigger *trigger);
extern void led_trigger_unregister(struct led_trigger *trigger);
/* Registration functions for simple triggers */
#define DEFINE_LED_TRIGGER(x) static struct led_trigger *x;
#define DEFINE_LED_TRIGGER_GLOBAL(x) struct led_trigger *x;
extern void led_trigger_register_simple(const char *name,
struct led_trigger **trigger);
extern void led_trigger_unregister_simple(struct led_trigger *trigger);
@ -199,20 +200,30 @@ extern void led_trigger_rename_static(const char *name,
#else
/* Triggers aren't active - null macros */
#define DEFINE_LED_TRIGGER(x)
#define DEFINE_LED_TRIGGER_GLOBAL(x)
#define led_trigger_register_simple(x, y) do {} while(0)
#define led_trigger_unregister_simple(x) do {} while(0)
#define led_trigger_event(x, y) do {} while(0)
/* Trigger has no members */
struct led_trigger {};
#endif
/* Trigger inline empty functions */
static inline void led_trigger_register_simple(const char *name,
struct led_trigger **trigger) {}
static inline void led_trigger_unregister_simple(struct led_trigger *trigger) {}
static inline void led_trigger_event(struct led_trigger *trigger,
enum led_brightness event) {}
#endif /* CONFIG_LEDS_TRIGGERS */
/* Trigger specific functions */
#ifdef CONFIG_LEDS_TRIGGER_IDE_DISK
extern void ledtrig_ide_activity(void);
#else
#define ledtrig_ide_activity() do {} while(0)
static inline void ledtrig_ide_activity(void) {}
#endif
#if defined(CONFIG_LEDS_TRIGGER_CAMERA) || defined(CONFIG_LEDS_TRIGGER_CAMERA_MODULE)
extern void ledtrig_flash_ctrl(bool on);
extern void ledtrig_torch_ctrl(bool on);
#else
static inline void ledtrig_flash_ctrl(bool on) {}
static inline void ledtrig_torch_ctrl(bool on) {}
#endif
/*

2
include/linux/mmc/host.h
View File

@ -342,9 +342,7 @@ struct mmc_host {
mmc_pm_flag_t pm_flags; /* requested pm features */
#ifdef CONFIG_LEDS_TRIGGERS
struct led_trigger *led; /* activity led */
#endif
#ifdef CONFIG_REGULATOR
bool regulator_enabled; /* regulator state */

21
include/linux/platform_data/leds-lp55xx.h
View File

@ -20,18 +20,6 @@
#define LP55XX_CLOCK_INT 1
#define LP55XX_CLOCK_EXT 2
/* Bits in LP5521 CONFIG register. 'update_config' in lp55xx_platform_data */
#define LP5521_PWM_HF 0x40 /* PWM: 0 = 256Hz, 1 = 558Hz */
#define LP5521_PWRSAVE_EN 0x20 /* 1 = Power save mode */
#define LP5521_CP_MODE_OFF 0 /* Charge pump (CP) off */
#define LP5521_CP_MODE_BYPASS 8 /* CP forced to bypass mode */
#define LP5521_CP_MODE_1X5 0x10 /* CP forced to 1.5x mode */
#define LP5521_CP_MODE_AUTO 0x18 /* Automatic mode selection */
#define LP5521_R_TO_BATT 4 /* R out: 0 = CP, 1 = Vbat */
#define LP5521_CLK_SRC_EXT 0 /* Ext-clk source (CLK_32K) */
#define LP5521_CLK_INT 1 /* Internal clock */
#define LP5521_CLK_AUTO 2 /* Automatic clock selection */
struct lp55xx_led_config {
const char *name;
u8 chan_nr;
@ -40,9 +28,9 @@ struct lp55xx_led_config {
};
struct lp55xx_predef_pattern {
u8 *r;
u8 *g;
u8 *b;
const u8 *r;
const u8 *g;
const u8 *b;
u8 size_r;
u8 size_g;
u8 size_b;
@ -79,9 +67,6 @@ struct lp55xx_platform_data {
/* Predefined pattern data */
struct lp55xx_predef_pattern *patterns;
unsigned int num_patterns;
/* _CONFIG register */
u8 update_config;
};
#endif /* _LEDS_LP55XX_H */