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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 update from Bryan Wu.

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (24 commits)
  leds: add output driver configuration for pca9633 led driver
  leds: lm3642: Use regmap_update_bits() in lm3642_chip_init()
  leds: Add new LED driver for lm3642 chips
  leds-lp5523: Fix riskiness of the page fault
  leds-lp5523: turn off the LED engines on unloading the driver
  leds-lm3530: Fix smatch warnings
  leds-lm3530: Use devm_regulator_get function
  leds: leds-gpio: adopt pinctrl support
  leds: Add new LED driver for lm355x chips
  leds-lp5523: use the i2c device id rather than fixed name
  leds-lp5523: add new device id for LP55231
  leds-lp5523: support new LP55231 device
  leds: triggers: send uevent when changing triggers
  leds-lp5523: minor code style fixes
  leds-lp5523: change the return type of lp5523_set_mode()
  leds-lp5523: set the brightness to 0 forcely on removing the driver
  leds-lp5523: add channel name in the platform data
  leds: leds-gpio: Use of_get_child_count() helper
  leds: leds-gpio: Use platform_{get,set}_drvdata
  leds: leds-gpio: use of_match_ptr()
  ...
This commit is contained in:
Linus Torvalds 2012-10-10 20:14:07 +09:00
commit c7a6ced9d8
22 changed files with 1350 additions and 658 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
Documentation/leds/leds-lp5523.txt
View File

@ -10,8 +10,22 @@ Contact: Samu Onkalo (samu.p.onkalo-at-nokia.com)
Description
-----------
LP5523 can drive up to 9 channels. Leds can be controlled directly via
the led class control interface. Channels have generic names:
lp5523:channelx where x is 0...8
the led class control interface.
The name of each channel is configurable in the platform data - name and label.
There are three options to make the channel name.
a) Define the 'name' in the platform data
To make specific channel name, then use 'name' platform data.
/sys/class/leds/R1 (name: 'R1')
/sys/class/leds/B1 (name: 'B1')
b) Use the 'label' with no 'name' field
For one device name with channel number, then use 'label'.
/sys/class/leds/RGB:channelN (label: 'RGB', N: 0 ~ 8)
c) Default
If both fields are NULL, 'lp5523' is used by default.
/sys/class/leds/lp5523:channelN (N: 0 ~ 8)
The chip provides 3 engines. Each engine can control channels without
interaction from the main CPU. Details of the micro engine code can be found
@ -46,12 +60,13 @@ Note - chan_nr can have values between 0 and 8.
static struct lp5523_led_config lp5523_led_config[] = {
{
.name = "D1",
.chan_nr = 0,
.led_current = 50,
.max_current = 130,
},
...
}, {
{
.chan_nr = 8,
.led_current = 50,
.max_current = 130,

26
drivers/leds/Kconfig
View File

@ -63,6 +63,17 @@ config LEDS_LM3533
hardware-accelerated blinking with maximum on and off periods of 9.8
and 77 seconds respectively.
config LEDS_LM3642
tristate "LED support for LM3642 Chip"
depends on LEDS_CLASS && I2C
select REGMAP_I2C
help
This option enables support for LEDs connected to LM3642.
The LM3642 is a 4MHz fixed-frequency synchronous boost
converter plus 1.5A constant current driver for a high-current
white LED.
config LEDS_LOCOMO
tristate "LED Support for Locomo device"
depends on LEDS_CLASS
@ -192,11 +203,12 @@ config LEDS_LP5521
programming the engines.
config LEDS_LP5523
tristate "LED Support for N.S. LP5523 LED driver chip"
tristate "LED Support for TI/National LP5523/55231 LED driver chip"
depends on LEDS_CLASS && I2C
help
If you say yes here you get support for the National Semiconductor
LP5523 LED driver. It is 9 channel chip with programmable engines.
If you say yes here you get support for TI/National Semiconductor
LP5523/55231 LED driver.
It is 9 channel chip with programmable engines.
Driver provides direct control via LED class and interface for
programming the engines.
@ -422,13 +434,13 @@ config LEDS_MAX8997
This option enables support for on-chip LED drivers on
MAXIM MAX8997 PMIC.
config LEDS_LM3556
tristate "LED support for LM3556 Chip"
config LEDS_LM355x
tristate "LED support for LM355x Chips, LM3554 and LM3556"
depends on LEDS_CLASS && I2C
select REGMAP_I2C
help
This option enables support for LEDs connected to LM3556.
LM3556 includes Torch, Flash and Indicator functions.
This option enables support for LEDs connected to LM355x.
LM355x includes Torch, Flash and Indicator functions.
config LEDS_OT200
tristate "LED support for the Bachmann OT200"

3
drivers/leds/Makefile
View File

@ -11,6 +11,7 @@ obj-$(CONFIG_LEDS_BD2802) += leds-bd2802.o
obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o
obj-$(CONFIG_LEDS_LM3530) += leds-lm3530.o
obj-$(CONFIG_LEDS_LM3533) += leds-lm3533.o
obj-$(CONFIG_LEDS_LM3642) += leds-lm3642.o
obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o
obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o
@ -48,7 +49,7 @@ obj-$(CONFIG_LEDS_NETXBIG) += leds-netxbig.o
obj-$(CONFIG_LEDS_ASIC3) += leds-asic3.o
obj-$(CONFIG_LEDS_RENESAS_TPU) += leds-renesas-tpu.o
obj-$(CONFIG_LEDS_MAX8997) += leds-max8997.o
obj-$(CONFIG_LEDS_LM3556) += leds-lm3556.o
obj-$(CONFIG_LEDS_LM355x) += leds-lm355x.o
obj-$(CONFIG_LEDS_BLINKM) += leds-blinkm.o
# LED SPI Drivers

15
drivers/leds/led-class.c
View File

@ -124,6 +124,16 @@ static void led_timer_function(unsigned long data)
mod_timer(&led_cdev->blink_timer, jiffies + msecs_to_jiffies(delay));
}
static void set_brightness_delayed(struct work_struct *ws)
{
struct led_classdev *led_cdev =
container_of(ws, struct led_classdev, set_brightness_work);
led_stop_software_blink(led_cdev);
__led_set_brightness(led_cdev, led_cdev->delayed_set_value);
}
/**
* led_classdev_suspend - suspend an led_classdev.
* @led_cdev: the led_classdev to suspend.
@ -191,6 +201,8 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
led_update_brightness(led_cdev);
INIT_WORK(&led_cdev->set_brightness_work, set_brightness_delayed);
init_timer(&led_cdev->blink_timer);
led_cdev->blink_timer.function = led_timer_function;
led_cdev->blink_timer.data = (unsigned long)led_cdev;
@ -221,7 +233,10 @@ void led_classdev_unregister(struct led_classdev *led_cdev)
up_write(&led_cdev->trigger_lock);
#endif
cancel_work_sync(&led_cdev->set_brightness_work);
/* Stop blinking */
led_stop_software_blink(led_cdev);
led_set_brightness(led_cdev, LED_OFF);
device_unregister(led_cdev->dev);

16
drivers/leds/led-core.c
View File

@ -103,13 +103,23 @@ void led_blink_set_oneshot(struct led_classdev *led_cdev,
}
EXPORT_SYMBOL(led_blink_set_oneshot);
void led_set_brightness(struct led_classdev *led_cdev,
enum led_brightness brightness)
void led_stop_software_blink(struct led_classdev *led_cdev)
{
/* stop and clear soft-blink timer */
del_timer_sync(&led_cdev->blink_timer);
led_cdev->blink_delay_on = 0;
led_cdev->blink_delay_off = 0;
}
EXPORT_SYMBOL_GPL(led_stop_software_blink);
void led_set_brightness(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
/* delay brightness setting if need to stop soft-blink timer */
if (led_cdev->blink_delay_on || led_cdev->blink_delay_off) {
led_cdev->delayed_set_value = brightness;
schedule_work(&led_cdev->set_brightness_work);
return;
}
__led_set_brightness(led_cdev, brightness);
}

17
drivers/leds/led-triggers.c
View File

@ -102,6 +102,12 @@ EXPORT_SYMBOL_GPL(led_trigger_show);
void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
{
unsigned long flags;
char *event = NULL;
char *envp[2];
const char *name;
name = trig ? trig->name : "none";
event = kasprintf(GFP_KERNEL, "TRIGGER=%s", name);
/* Remove any existing trigger */
if (led_cdev->trigger) {
@ -109,6 +115,8 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
list_del(&led_cdev->trig_list);
write_unlock_irqrestore(&led_cdev->trigger->leddev_list_lock,
flags);
cancel_work_sync(&led_cdev->set_brightness_work);
led_stop_software_blink(led_cdev);
if (led_cdev->trigger->deactivate)
led_cdev->trigger->deactivate(led_cdev);
led_cdev->trigger = NULL;
@ -122,6 +130,13 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
if (trig->activate)
trig->activate(led_cdev);
}
if (event) {
envp[0] = event;
envp[1] = NULL;
kobject_uevent_env(&led_cdev->dev->kobj, KOBJ_CHANGE, envp);
kfree(event);
}
}
EXPORT_SYMBOL_GPL(led_trigger_set);
@ -224,7 +239,7 @@ void led_trigger_event(struct led_trigger *trig,
struct led_classdev *led_cdev;
led_cdev = list_entry(entry, struct led_classdev, trig_list);
__led_set_brightness(led_cdev, brightness);
led_set_brightness(led_cdev, brightness);
}
read_unlock(&trig->leddev_list_lock);
}

10
drivers/leds/leds-clevo-mail.c
View File

@ -31,7 +31,7 @@ static int __init clevo_mail_led_dmi_callback(const struct dmi_system_id *id)
}
/*
* struct mail_led_whitelist - List of known good models
* struct clevo_mail_led_dmi_table - List of known good models
*
* Contains the known good models this driver is compatible with.
* When adding a new model try to be as strict as possible. This
@ -39,7 +39,7 @@ static int __init clevo_mail_led_dmi_callback(const struct dmi_system_id *id)
* detected as working, but in reality it is not) as low as
* possible.
*/
static struct dmi_system_id __initdata mail_led_whitelist[] = {
static struct dmi_system_id __initdata clevo_mail_led_dmi_table[] = {
{
.callback = clevo_mail_led_dmi_callback,
.ident = "Clevo D410J",
@ -59,11 +59,10 @@ static struct dmi_system_id __initdata mail_led_whitelist[] = {
},
{
.callback = clevo_mail_led_dmi_callback,
.ident = "Positivo Mobile",
.ident = "Clevo M5x0V",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "CLEVO Co. "),
DMI_MATCH(DMI_BOARD_NAME, "M5X0V "),
DMI_MATCH(DMI_PRODUCT_NAME, "Positivo Mobile"),
DMI_MATCH(DMI_PRODUCT_VERSION, "VT6198")
}
},
@ -89,6 +88,7 @@ static struct dmi_system_id __initdata mail_led_whitelist[] = {
},
{ }
};
MODULE_DEVICE_TABLE(dmi, clevo_mail_led_dmi_table);
static void clevo_mail_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
@ -180,7 +180,7 @@ static int __init clevo_mail_led_init(void)
/* Check with the help of DMI if we are running on supported hardware */
if (!nodetect) {
count = dmi_check_system(mail_led_whitelist);
count = dmi_check_system(clevo_mail_led_dmi_table);
} else {
count = 1;
printk(KERN_ERR KBUILD_MODNAME ": Skipping DMI detection. "

19
drivers/leds/leds-gpio.c
View File

@ -20,6 +20,7 @@
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/module.h>
#include <linux/pinctrl/consumer.h>
struct gpio_led_data {
struct led_classdev cdev;
@ -170,11 +171,10 @@ static struct gpio_leds_priv * __devinit gpio_leds_create_of(struct platform_dev
{
struct device_node *np = pdev->dev.of_node, *child;
struct gpio_leds_priv *priv;
int count = 0, ret;
int count, ret;
/* count LEDs in this device, so we know how much to allocate */
for_each_child_of_node(np, child)
count++;
count = of_get_child_count(np);
if (!count)
return NULL;
@ -228,7 +228,6 @@ static struct gpio_leds_priv * __devinit gpio_leds_create_of(struct platform_dev
{
return NULL;
}
#define of_gpio_leds_match NULL
#endif /* CONFIG_OF_GPIO */
@ -236,8 +235,14 @@ static int __devinit gpio_led_probe(struct platform_device *pdev)
{
struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
struct gpio_leds_priv *priv;
struct pinctrl *pinctrl;
int i, ret = 0;
pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
if (IS_ERR(pinctrl))
dev_warn(&pdev->dev,
"pins are not configured from the driver\n");
if (pdata && pdata->num_leds) {
priv = devm_kzalloc(&pdev->dev,
sizeof_gpio_leds_priv(pdata->num_leds),
@ -270,13 +275,13 @@ static int __devinit gpio_led_probe(struct platform_device *pdev)
static int __devexit gpio_led_remove(struct platform_device *pdev)
{
struct gpio_leds_priv *priv = dev_get_drvdata(&pdev->dev);
struct gpio_leds_priv *priv = platform_get_drvdata(pdev);
int i;
for (i = 0; i < priv->num_leds; i++)
delete_gpio_led(&priv->leds[i]);
dev_set_drvdata(&pdev->dev, NULL);
platform_set_drvdata(pdev, NULL);
return 0;
}
@ -287,7 +292,7 @@ static struct platform_driver gpio_led_driver = {
.driver = {
.name = "leds-gpio",
.owner = THIS_MODULE,
.of_match_table = of_gpio_leds_match,
.of_match_table = of_match_ptr(of_gpio_leds_match),
},
};

16
drivers/leds/leds-lm3530.c
View File

@ -150,7 +150,7 @@ static int lm3530_get_mode_from_str(const char *str)
if (sysfs_streq(str, mode_map[i].mode))
return mode_map[i].mode_val;
return -1;
return -EINVAL;
}
static void lm3530_als_configure(struct lm3530_platform_data *pdata,
@ -358,7 +358,7 @@ static ssize_t lm3530_mode_set(struct device *dev, struct device_attribute
mode = lm3530_get_mode_from_str(buf);
if (mode < 0) {
dev_err(dev, "Invalid mode\n");
return -EINVAL;
return mode;
}
drvdata->mode = mode;
@ -416,7 +416,7 @@ static int __devinit lm3530_probe(struct i2c_client *client,
i2c_set_clientdata(client, drvdata);
drvdata->regulator = regulator_get(&client->dev, "vin");
drvdata->regulator = devm_regulator_get(&client->dev, "vin");
if (IS_ERR(drvdata->regulator)) {
dev_err(&client->dev, "regulator get failed\n");
err = PTR_ERR(drvdata->regulator);
@ -429,15 +429,13 @@ static int __devinit lm3530_probe(struct i2c_client *client,
if (err < 0) {
dev_err(&client->dev,
"Register Init failed: %d\n", err);
err = -ENODEV;
goto err_reg_init;
return err;
}
}
err = led_classdev_register(&client->dev, &drvdata->led_dev);
if (err < 0) {
dev_err(&client->dev, "Register led class failed: %d\n", err);
err = -ENODEV;
goto err_class_register;
return err;
}
err = device_create_file(drvdata->led_dev.dev, &dev_attr_mode);
@ -451,9 +449,6 @@ static int __devinit lm3530_probe(struct i2c_client *client,
err_create_file:
led_classdev_unregister(&drvdata->led_dev);
err_class_register:
err_reg_init:
regulator_put(drvdata->regulator);
return err;
}
@ -465,7 +460,6 @@ static int __devexit lm3530_remove(struct i2c_client *client)
if (drvdata->enable)
regulator_disable(drvdata->regulator);
regulator_put(drvdata->regulator);
led_classdev_unregister(&drvdata->led_dev);
return 0;
}

512
drivers/leds/leds-lm3556.c
View File

@ -1,512 +0,0 @@
/*
* Simple driver for Texas Instruments LM3556 LED Flash driver chip (Rev0x03)
* Copyright (C) 2012 Texas Instruments
*
* 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.
*
* Please refer Documentation/leds/leds-lm3556.txt file.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/fs.h>
#include <linux/regmap.h>
#include <linux/platform_data/leds-lm3556.h>
#define REG_FILT_TIME (0x0)
#define REG_IVFM_MODE (0x1)
#define REG_NTC (0x2)
#define REG_INDIC_TIME (0x3)
#define REG_INDIC_BLINK (0x4)
#define REG_INDIC_PERIOD (0x5)
#define REG_TORCH_TIME (0x6)
#define REG_CONF (0x7)
#define REG_FLASH (0x8)
#define REG_I_CTRL (0x9)
#define REG_ENABLE (0xA)
#define REG_FLAG (0xB)
#define REG_MAX (0xB)
#define IVFM_FILTER_TIME_SHIFT (3)
#define UVLO_EN_SHIFT (7)
#define HYSTERSIS_SHIFT (5)
#define IVM_D_TH_SHIFT (2)
#define IVFM_ADJ_MODE_SHIFT (0)
#define NTC_EVENT_LVL_SHIFT (5)
#define NTC_TRIP_TH_SHIFT (2)
#define NTC_BIAS_I_LVL_SHIFT (0)
#define INDIC_RAMP_UP_TIME_SHIFT (3)
#define INDIC_RAMP_DN_TIME_SHIFT (0)
#define INDIC_N_BLANK_SHIFT (4)
#define INDIC_PULSE_TIME_SHIFT (0)
#define INDIC_N_PERIOD_SHIFT (0)
#define TORCH_RAMP_UP_TIME_SHIFT (3)
#define TORCH_RAMP_DN_TIME_SHIFT (0)
#define STROBE_USUAGE_SHIFT (7)
#define STROBE_PIN_POLARITY_SHIFT (6)
#define TORCH_PIN_POLARITY_SHIFT (5)
#define TX_PIN_POLARITY_SHIFT (4)
#define TX_EVENT_LVL_SHIFT (3)
#define IVFM_EN_SHIFT (2)
#define NTC_MODE_SHIFT (1)
#define INDIC_MODE_SHIFT (0)
#define INDUCTOR_I_LIMIT_SHIFT (6)
#define FLASH_RAMP_TIME_SHIFT (3)
#define FLASH_TOUT_TIME_SHIFT (0)
#define TORCH_I_SHIFT (4)
#define FLASH_I_SHIFT (0)
#define NTC_EN_SHIFT (7)
#define TX_PIN_EN_SHIFT (6)
#define STROBE_PIN_EN_SHIFT (5)
#define TORCH_PIN_EN_SHIFT (4)
#define PRECHG_MODE_EN_SHIFT (3)
#define PASS_MODE_ONLY_EN_SHIFT (2)
#define MODE_BITS_SHIFT (0)
#define IVFM_FILTER_TIME_MASK (0x3)
#define UVLO_EN_MASK (0x1)
#define HYSTERSIS_MASK (0x3)
#define IVM_D_TH_MASK (0x7)
#define IVFM_ADJ_MODE_MASK (0x3)
#define NTC_EVENT_LVL_MASK (0x1)
#define NTC_TRIP_TH_MASK (0x7)
#define NTC_BIAS_I_LVL_MASK (0x3)
#define INDIC_RAMP_UP_TIME_MASK (0x7)
#define INDIC_RAMP_DN_TIME_MASK (0x7)
#define INDIC_N_BLANK_MASK (0x7)
#define INDIC_PULSE_TIME_MASK (0x7)
#define INDIC_N_PERIOD_MASK (0x7)
#define TORCH_RAMP_UP_TIME_MASK (0x7)
#define TORCH_RAMP_DN_TIME_MASK (0x7)
#define STROBE_USUAGE_MASK (0x1)
#define STROBE_PIN_POLARITY_MASK (0x1)
#define TORCH_PIN_POLARITY_MASK (0x1)
#define TX_PIN_POLARITY_MASK (0x1)
#define TX_EVENT_LVL_MASK (0x1)
#define IVFM_EN_MASK (0x1)
#define NTC_MODE_MASK (0x1)
#define INDIC_MODE_MASK (0x1)
#define INDUCTOR_I_LIMIT_MASK (0x3)
#define FLASH_RAMP_TIME_MASK (0x7)
#define FLASH_TOUT_TIME_MASK (0x7)
#define TORCH_I_MASK (0x7)
#define FLASH_I_MASK (0xF)
#define NTC_EN_MASK (0x1)
#define TX_PIN_EN_MASK (0x1)
#define STROBE_PIN_EN_MASK (0x1)
#define TORCH_PIN_EN_MASK (0x1)
#define PRECHG_MODE_EN_MASK (0x1)
#define PASS_MODE_ONLY_EN_MASK (0x1)
#define MODE_BITS_MASK (0x13)
#define EX_PIN_CONTROL_MASK (0xF1)
#define EX_PIN_ENABLE_MASK (0x70)
enum lm3556_indic_pulse_time {
PULSE_TIME_0_MS = 0,
PULSE_TIME_32_MS,
PULSE_TIME_64_MS,
PULSE_TIME_92_MS,
PULSE_TIME_128_MS,
PULSE_TIME_160_MS,
PULSE_TIME_196_MS,
PULSE_TIME_224_MS,
PULSE_TIME_256_MS,
PULSE_TIME_288_MS,
PULSE_TIME_320_MS,
PULSE_TIME_352_MS,
PULSE_TIME_384_MS,
PULSE_TIME_416_MS,
PULSE_TIME_448_MS,
PULSE_TIME_480_MS,
};
enum lm3556_indic_n_blank {
INDIC_N_BLANK_0 = 0,
INDIC_N_BLANK_1,
INDIC_N_BLANK_2,
INDIC_N_BLANK_3,
INDIC_N_BLANK_4,
INDIC_N_BLANK_5,
INDIC_N_BLANK_6,
INDIC_N_BLANK_7,
INDIC_N_BLANK_8,
INDIC_N_BLANK_9,
INDIC_N_BLANK_10,
INDIC_N_BLANK_11,
INDIC_N_BLANK_12,
INDIC_N_BLANK_13,
INDIC_N_BLANK_14,
INDIC_N_BLANK_15,
};
enum lm3556_indic_period {
INDIC_PERIOD_0 = 0,
INDIC_PERIOD_1,
INDIC_PERIOD_2,
INDIC_PERIOD_3,
INDIC_PERIOD_4,
INDIC_PERIOD_5,
INDIC_PERIOD_6,
INDIC_PERIOD_7,
};
enum lm3556_mode {
MODES_STASNDBY = 0,
MODES_INDIC,
MODES_TORCH,
MODES_FLASH
};
#define INDIC_PATTERN_SIZE 4
struct indicator {
u8 blinking;
u8 period_cnt;
};
struct lm3556_chip_data {
struct device *dev;
struct led_classdev cdev_flash;
struct led_classdev cdev_torch;
struct led_classdev cdev_indicator;
struct lm3556_platform_data *pdata;
struct regmap *regmap;
struct mutex lock;
unsigned int last_flag;
};
/* indicator pattern */
static struct indicator indicator_pattern[INDIC_PATTERN_SIZE] = {
[0] = {(INDIC_N_BLANK_1 << INDIC_N_BLANK_SHIFT)
| PULSE_TIME_32_MS, INDIC_PERIOD_1},
[1] = {(INDIC_N_BLANK_15 << INDIC_N_BLANK_SHIFT)
| PULSE_TIME_32_MS, INDIC_PERIOD_2},
[2] = {(INDIC_N_BLANK_10 << INDIC_N_BLANK_SHIFT)
| PULSE_TIME_32_MS, INDIC_PERIOD_4},
[3] = {(INDIC_N_BLANK_5 << INDIC_N_BLANK_SHIFT)
| PULSE_TIME_32_MS, INDIC_PERIOD_7},
};
/* chip initialize */
static int __devinit lm3556_chip_init(struct lm3556_chip_data *chip)
{
unsigned int reg_val;
int ret;
struct lm3556_platform_data *pdata = chip->pdata;
/* set config register */
ret = regmap_read(chip->regmap, REG_CONF, &reg_val);
if (ret < 0) {
dev_err(chip->dev, "Failed to read REG_CONF Register\n");
goto out;
}
reg_val &= (~EX_PIN_CONTROL_MASK);
reg_val |= ((pdata->torch_pin_polarity & 0x01)
<< TORCH_PIN_POLARITY_SHIFT);
reg_val |= ((pdata->strobe_usuage & 0x01) << STROBE_USUAGE_SHIFT);
reg_val |= ((pdata->strobe_pin_polarity & 0x01)
<< STROBE_PIN_POLARITY_SHIFT);
reg_val |= ((pdata->tx_pin_polarity & 0x01) << TX_PIN_POLARITY_SHIFT);
reg_val |= ((pdata->indicator_mode & 0x01) << INDIC_MODE_SHIFT);
ret = regmap_write(chip->regmap, REG_CONF, reg_val);
if (ret < 0) {
dev_err(chip->dev, "Failed to write REG_CONF Regisgter\n");
goto out;
}
/* set enable register */
ret = regmap_read(chip->regmap, REG_ENABLE, &reg_val);
if (ret < 0) {
dev_err(chip->dev, "Failed to read REG_ENABLE Register\n");
goto out;
}
reg_val &= (~EX_PIN_ENABLE_MASK);
reg_val |= ((pdata->torch_pin_en & 0x01) << TORCH_PIN_EN_SHIFT);
reg_val |= ((pdata->strobe_pin_en & 0x01) << STROBE_PIN_EN_SHIFT);
reg_val |= ((pdata->tx_pin_en & 0x01) << TX_PIN_EN_SHIFT);
ret = regmap_write(chip->regmap, REG_ENABLE, reg_val);
if (ret < 0) {
dev_err(chip->dev, "Failed to write REG_ENABLE Regisgter\n");
goto out;
}
out:
return ret;
}
/* chip control */
static int lm3556_control(struct lm3556_chip_data *chip,
u8 brightness, enum lm3556_mode opmode)
{
int ret;
struct lm3556_platform_data *pdata = chip->pdata;
ret = regmap_read(chip->regmap, REG_FLAG, &chip->last_flag);
if (ret < 0) {
dev_err(chip->dev, "Failed to read REG_FLAG Register\n");
goto out;
}
if (chip->last_flag)
dev_info(chip->dev, "Last FLAG is 0x%x\n", chip->last_flag);
/* brightness 0 means off-state */
if (!brightness)
opmode = MODES_STASNDBY;
switch (opmode) {
case MODES_TORCH:
ret = regmap_update_bits(chip->regmap, REG_I_CTRL,
TORCH_I_MASK << TORCH_I_SHIFT,
(brightness - 1) << TORCH_I_SHIFT);
if (pdata->torch_pin_en)
opmode |= (TORCH_PIN_EN_MASK << TORCH_PIN_EN_SHIFT);
break;
case MODES_FLASH:
ret = regmap_update_bits(chip->regmap, REG_I_CTRL,
FLASH_I_MASK << FLASH_I_SHIFT,
(brightness - 1) << FLASH_I_SHIFT);
break;
case MODES_INDIC:
ret = regmap_update_bits(chip->regmap, REG_I_CTRL,
TORCH_I_MASK << TORCH_I_SHIFT,
(brightness - 1) << TORCH_I_SHIFT);
break;
case MODES_STASNDBY:
if (pdata->torch_pin_en)
opmode |= (TORCH_PIN_EN_MASK << TORCH_PIN_EN_SHIFT);
break;
default:
return ret;
}
if (ret < 0) {
dev_err(chip->dev, "Failed to write REG_I_CTRL Register\n");
goto out;
}
ret = regmap_update_bits(chip->regmap, REG_ENABLE,
MODE_BITS_MASK << MODE_BITS_SHIFT,
opmode << MODE_BITS_SHIFT);
out:
return ret;
}
/* torch */
static void lm3556_torch_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm3556_chip_data *chip =
container_of(cdev, struct lm3556_chip_data, cdev_torch);
mutex_lock(&chip->lock);
lm3556_control(chip, brightness, MODES_TORCH);
mutex_unlock(&chip->lock);
}
/* flash */
static void lm3556_strobe_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm3556_chip_data *chip =
container_of(cdev, struct lm3556_chip_data, cdev_flash);
mutex_lock(&chip->lock);
lm3556_control(chip, brightness, MODES_FLASH);
mutex_unlock(&chip->lock);
}
/* indicator */
static void lm3556_indicator_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm3556_chip_data *chip =
container_of(cdev, struct lm3556_chip_data, cdev_indicator);
mutex_lock(&chip->lock);
lm3556_control(chip, brightness, MODES_INDIC);
mutex_unlock(&chip->lock);
}
/* indicator pattern */
static ssize_t lm3556_indicator_pattern_store(struct device *dev,
struct device_attribute *devAttr,
const char *buf, size_t size)
{
ssize_t ret;
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct lm3556_chip_data *chip =
container_of(led_cdev, struct lm3556_chip_data, cdev_indicator);
unsigned int state;
ret = kstrtouint(buf, 10, &state);
if (ret)
goto out;
if (state > INDIC_PATTERN_SIZE - 1)
state = INDIC_PATTERN_SIZE - 1;
ret = regmap_write(chip->regmap, REG_INDIC_BLINK,
indicator_pattern[state].blinking);
if (ret < 0) {
dev_err(chip->dev, "Failed to write REG_ENABLE Regisgter\n");
goto out;
}
ret = regmap_write(chip->regmap, REG_INDIC_PERIOD,
indicator_pattern[state].period_cnt);
if (ret < 0) {
dev_err(chip->dev, "Failed to write REG_ENABLE Regisgter\n");
goto out;
}
return size;
out:
dev_err(chip->dev, "Indicator pattern doesn't saved\n");
return size;
}
static DEVICE_ATTR(pattern, 0666, NULL, lm3556_indicator_pattern_store);
static const struct regmap_config lm3556_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = REG_MAX,
};
/* module initialize */
static int __devinit lm3556_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct lm3556_platform_data *pdata = client->dev.platform_data;
struct lm3556_chip_data *chip;
int err;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
dev_err(&client->dev, "i2c functionality check fail.\n");
return -EOPNOTSUPP;
}
if (pdata == NULL) {
dev_err(&client->dev, "Needs Platform Data.\n");
return -ENODATA;
}
chip =
devm_kzalloc(&client->dev, sizeof(struct lm3556_chip_data),
GFP_KERNEL);
if (!chip)
return -ENOMEM;
chip->dev = &client->dev;
chip->pdata = pdata;
chip->regmap = devm_regmap_init_i2c(client, &lm3556_regmap);
if (IS_ERR(chip->regmap)) {
err = PTR_ERR(chip->regmap);
dev_err(&client->dev, "Failed to allocate register map: %d\n",
err);
return err;
}
mutex_init(&chip->lock);
i2c_set_clientdata(client, chip);
err = lm3556_chip_init(chip);
if (err < 0)
goto err_out;
/* flash */
chip->cdev_flash.name = "flash";
chip->cdev_flash.max_brightness = 16;
chip->cdev_flash.brightness_set = lm3556_strobe_brightness_set;
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_flash);
if (err < 0)
goto err_out;
/* torch */
chip->cdev_torch.name = "torch";
chip->cdev_torch.max_brightness = 8;
chip->cdev_torch.brightness_set = lm3556_torch_brightness_set;
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_torch);
if (err < 0)
goto err_create_torch_file;
/* indicator */
chip->cdev_indicator.name = "indicator";
chip->cdev_indicator.max_brightness = 8;
chip->cdev_indicator.brightness_set = lm3556_indicator_brightness_set;
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_indicator);
if (err < 0)
goto err_create_indicator_file;
err = device_create_file(chip->cdev_indicator.dev, &dev_attr_pattern);
if (err < 0)
goto err_create_pattern_file;
dev_info(&client->dev, "LM3556 is initialized\n");
return 0;
err_create_pattern_file:
led_classdev_unregister(&chip->cdev_indicator);
err_create_indicator_file:
led_classdev_unregister(&chip->cdev_torch);
err_create_torch_file:
led_classdev_unregister(&chip->cdev_flash);
err_out:
return err;
}
static int __devexit lm3556_remove(struct i2c_client *client)
{
struct lm3556_chip_data *chip = i2c_get_clientdata(client);
device_remove_file(chip->cdev_indicator.dev, &dev_attr_pattern);
led_classdev_unregister(&chip->cdev_indicator);
led_classdev_unregister(&chip->cdev_torch);
led_classdev_unregister(&chip->cdev_flash);
regmap_write(chip->regmap, REG_ENABLE, 0);
return 0;
}
static const struct i2c_device_id lm3556_id[] = {
{LM3556_NAME, 0},
{}
};
MODULE_DEVICE_TABLE(i2c, lm3556_id);
static struct i2c_driver lm3556_i2c_driver = {
.driver = {
.name = LM3556_NAME,
.owner = THIS_MODULE,
.pm = NULL,
},
.probe = lm3556_probe,
.remove = __devexit_p(lm3556_remove),
.id_table = lm3556_id,
};
module_i2c_driver(lm3556_i2c_driver);
MODULE_DESCRIPTION("Texas Instruments Flash Lighting driver for LM3556");
MODULE_AUTHOR("Daniel Jeong <daniel.jeong@ti.com>");
MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@gmail.com>");
MODULE_LICENSE("GPL v2");

572
drivers/leds/leds-lm355x.c Normal file
View File

@ -0,0 +1,572 @@
/*
* Simple driver for Texas Instruments LM355x LED Flash driver chip
* Copyright (C) 2012 Texas Instruments
*
* 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/delay.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/fs.h>
#include <linux/regmap.h>
#include <linux/workqueue.h>
#include <linux/platform_data/leds-lm355x.h>
enum lm355x_type {
CHIP_LM3554 = 0,
CHIP_LM3556,
};
enum lm355x_regs {
REG_FLAG = 0,
REG_TORCH_CFG,
REG_TORCH_CTRL,
REG_STROBE_CFG,
REG_FLASH_CTRL,
REG_INDI_CFG,
REG_INDI_CTRL,
REG_OPMODE,
REG_MAX,
};
/* operation mode */
enum lm355x_mode {
MODE_SHDN = 0,
MODE_INDIC,
MODE_TORCH,
MODE_FLASH
};
/* register map info. */
struct lm355x_reg_data {
u8 regno;
u8 mask;
u8 shift;
};
struct lm355x_chip_data {
struct device *dev;
enum lm355x_type type;
struct led_classdev cdev_flash;
struct led_classdev cdev_torch;
struct led_classdev cdev_indicator;
struct work_struct work_flash;
struct work_struct work_torch;
struct work_struct work_indicator;
u8 br_flash;
u8 br_torch;
u8 br_indicator;
struct lm355x_platform_data *pdata;
struct regmap *regmap;
struct mutex lock;
unsigned int last_flag;
struct lm355x_reg_data *regs;
};
/* specific indicator function for lm3556 */
enum lm3556_indic_pulse_time {
PULSE_TIME_0_MS = 0,
PULSE_TIME_32_MS,
PULSE_TIME_64_MS,
PULSE_TIME_92_MS,
PULSE_TIME_128_MS,
PULSE_TIME_160_MS,
PULSE_TIME_196_MS,
PULSE_TIME_224_MS,
PULSE_TIME_256_MS,
PULSE_TIME_288_MS,
PULSE_TIME_320_MS,
PULSE_TIME_352_MS,
PULSE_TIME_384_MS,
PULSE_TIME_416_MS,
PULSE_TIME_448_MS,
PULSE_TIME_480_MS,
};
enum lm3556_indic_n_blank {
INDIC_N_BLANK_0 = 0,
INDIC_N_BLANK_1,
INDIC_N_BLANK_2,
INDIC_N_BLANK_3,
INDIC_N_BLANK_4,
INDIC_N_BLANK_5,
INDIC_N_BLANK_6,
INDIC_N_BLANK_7,
INDIC_N_BLANK_8,
INDIC_N_BLANK_9,
INDIC_N_BLANK_10,
INDIC_N_BLANK_11,
INDIC_N_BLANK_12,
INDIC_N_BLANK_13,
INDIC_N_BLANK_14,
INDIC_N_BLANK_15,
};
enum lm3556_indic_period {
INDIC_PERIOD_0 = 0,
INDIC_PERIOD_1,
INDIC_PERIOD_2,
INDIC_PERIOD_3,
INDIC_PERIOD_4,
INDIC_PERIOD_5,
INDIC_PERIOD_6,
INDIC_PERIOD_7,
};
#define INDIC_PATTERN_SIZE 4
struct indicator {
u8 blinking;
u8 period_cnt;
};
/* indicator pattern data only for lm3556 */
static struct indicator indicator_pattern[INDIC_PATTERN_SIZE] = {
[0] = {(INDIC_N_BLANK_1 << 4) | PULSE_TIME_32_MS, INDIC_PERIOD_1},
[1] = {(INDIC_N_BLANK_15 << 4) | PULSE_TIME_32_MS, INDIC_PERIOD_2},
[2] = {(INDIC_N_BLANK_10 << 4) | PULSE_TIME_32_MS, INDIC_PERIOD_4},
[3] = {(INDIC_N_BLANK_5 << 4) | PULSE_TIME_32_MS, INDIC_PERIOD_7},
};
static struct lm355x_reg_data lm3554_regs[REG_MAX] = {
[REG_FLAG] = {0xD0, 0xBF, 0},
[REG_TORCH_CFG] = {0xE0, 0x80, 7},
[REG_TORCH_CTRL] = {0xA0, 0x38, 3},
[REG_STROBE_CFG] = {0xE0, 0x04, 2},
[REG_FLASH_CTRL] = {0xB0, 0x78, 3},
[REG_INDI_CFG] = {0xE0, 0x08, 3},
[REG_INDI_CTRL] = {0xA0, 0xC0, 6},
[REG_OPMODE] = {0xA0, 0x03, 0},
};
static struct lm355x_reg_data lm3556_regs[REG_MAX] = {
[REG_FLAG] = {0x0B, 0xFF, 0},
[REG_TORCH_CFG] = {0x0A, 0x10, 4},
[REG_TORCH_CTRL] = {0x09, 0x70, 4},
[REG_STROBE_CFG] = {0x0A, 0x20, 5},
[REG_FLASH_CTRL] = {0x09, 0x0F, 0},
[REG_INDI_CFG] = {0xFF, 0xFF, 0},
[REG_INDI_CTRL] = {0x09, 0x70, 4},
[REG_OPMODE] = {0x0A, 0x03, 0},
};
static char lm355x_name[][I2C_NAME_SIZE] = {
[CHIP_LM3554] = LM3554_NAME,
[CHIP_LM3556] = LM3556_NAME,
};
/* chip initialize */
static int __devinit lm355x_chip_init(struct lm355x_chip_data *chip)
{
int ret;
unsigned int reg_val;
struct lm355x_platform_data *pdata = chip->pdata;
/* input and output pins configuration */
switch (chip->type) {
case CHIP_LM3554:
reg_val = pdata->pin_tx2 | pdata->ntc_pin;
ret = regmap_update_bits(chip->regmap, 0xE0, 0x28, reg_val);
if (ret < 0)
goto out;
reg_val = pdata->pass_mode;
ret = regmap_update_bits(chip->regmap, 0xA0, 0x04, reg_val);
if (ret < 0)
goto out;
break;
case CHIP_LM3556:
reg_val = pdata->pin_tx2 | pdata->ntc_pin | pdata->pass_mode;
ret = regmap_update_bits(chip->regmap, 0x0A, 0xC4, reg_val);
if (ret < 0)
goto out;
break;
default:
return -ENODATA;
}
return ret;
out:
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
return ret;
}
/* chip control */
static void lm355x_control(struct lm355x_chip_data *chip,
u8 brightness, enum lm355x_mode opmode)
{
int ret;
unsigned int reg_val;
struct lm355x_platform_data *pdata = chip->pdata;
struct lm355x_reg_data *preg = chip->regs;
ret = regmap_read(chip->regmap, preg[REG_FLAG].regno, &chip->last_flag);
if (ret < 0)
goto out;
if (chip->last_flag & preg[REG_FLAG].mask)
dev_info(chip->dev, "%s Last FLAG is 0x%x\n",
lm355x_name[chip->type],
chip->last_flag & preg[REG_FLAG].mask);
/* brightness 0 means shutdown */
if (!brightness)
opmode = MODE_SHDN;
switch (opmode) {
case MODE_TORCH:
ret =
regmap_update_bits(chip->regmap, preg[REG_TORCH_CTRL].regno,
preg[REG_TORCH_CTRL].mask,
(brightness - 1)
<< preg[REG_TORCH_CTRL].shift);
if (ret < 0)
goto out;
if (pdata->pin_tx1 != LM355x_PIN_TORCH_DISABLE) {
ret =
regmap_update_bits(chip->regmap,
preg[REG_TORCH_CFG].regno,
preg[REG_TORCH_CFG].mask,
0x01 <<
preg[REG_TORCH_CFG].shift);
if (ret < 0)
goto out;
opmode = MODE_SHDN;
dev_info(chip->dev,
"torch brt is set - ext. torch pin mode\n");
}
break;
case MODE_FLASH:
ret =
regmap_update_bits(chip->regmap, preg[REG_FLASH_CTRL].regno,
preg[REG_FLASH_CTRL].mask,
(brightness - 1)
<< preg[REG_FLASH_CTRL].shift);
if (ret < 0)
goto out;
if (pdata->pin_strobe != LM355x_PIN_STROBE_DISABLE) {
if (chip->type == CHIP_LM3554)
reg_val = 0x00;
else
reg_val = 0x01;
ret =
regmap_update_bits(chip->regmap,
preg[REG_STROBE_CFG].regno,
preg[REG_STROBE_CFG].mask,
reg_val <<
preg[REG_STROBE_CFG].shift);
if (ret < 0)
goto out;
opmode = MODE_SHDN;
dev_info(chip->dev,
"flash brt is set - ext. strobe pin mode\n");
}
break;
case MODE_INDIC:
ret =
regmap_update_bits(chip->regmap, preg[REG_INDI_CTRL].regno,
preg[REG_INDI_CTRL].mask,
(brightness - 1)
<< preg[REG_INDI_CTRL].shift);
if (ret < 0)
goto out;
if (pdata->pin_tx2 != LM355x_PIN_TX_DISABLE) {
ret =
regmap_update_bits(chip->regmap,
preg[REG_INDI_CFG].regno,
preg[REG_INDI_CFG].mask,
0x01 <<
preg[REG_INDI_CFG].shift);
if (ret < 0)
goto out;
opmode = MODE_SHDN;
}
break;
case MODE_SHDN:
break;
default:
return;
}
/* operation mode control */
ret = regmap_update_bits(chip->regmap, preg[REG_OPMODE].regno,
preg[REG_OPMODE].mask,
opmode << preg[REG_OPMODE].shift);
if (ret < 0)
goto out;
return;
out:
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
return;
}
/* torch */
static void lm355x_deferred_torch_brightness_set(struct work_struct *work)
{
struct lm355x_chip_data *chip =
container_of(work, struct lm355x_chip_data, work_torch);
mutex_lock(&chip->lock);
lm355x_control(chip, chip->br_torch, MODE_TORCH);
mutex_unlock(&chip->lock);
}
static void lm355x_torch_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm355x_chip_data *chip =
container_of(cdev, struct lm355x_chip_data, cdev_torch);
chip->br_torch = brightness;
schedule_work(&chip->work_torch);
}
/* flash */
static void lm355x_deferred_strobe_brightness_set(struct work_struct *work)
{
struct lm355x_chip_data *chip =
container_of(work, struct lm355x_chip_data, work_flash);
mutex_lock(&chip->lock);
lm355x_control(chip, chip->br_flash, MODE_FLASH);
mutex_unlock(&chip->lock);
}
static void lm355x_strobe_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm355x_chip_data *chip =
container_of(cdev, struct lm355x_chip_data, cdev_flash);
chip->br_flash = brightness;
schedule_work(&chip->work_flash);
}
/* indicator */
static void lm355x_deferred_indicator_brightness_set(struct work_struct *work)
{
struct lm355x_chip_data *chip =
container_of(work, struct lm355x_chip_data, work_indicator);
mutex_lock(&chip->lock);
lm355x_control(chip, chip->br_indicator, MODE_INDIC);
mutex_unlock(&chip->lock);
}
static void lm355x_indicator_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm355x_chip_data *chip =
container_of(cdev, struct lm355x_chip_data, cdev_indicator);
chip->br_indicator = brightness;
schedule_work(&chip->work_indicator);
}
/* indicator pattern only for lm3556*/
static ssize_t lm3556_indicator_pattern_store(struct device *dev,
struct device_attribute *devAttr,
const char *buf, size_t size)
{
ssize_t ret;
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct lm355x_chip_data *chip =
container_of(led_cdev, struct lm355x_chip_data, cdev_indicator);
unsigned int state;
ret = kstrtouint(buf, 10, &state);
if (ret)
goto out;
if (state > INDIC_PATTERN_SIZE - 1)
state = INDIC_PATTERN_SIZE - 1;
ret = regmap_write(chip->regmap, 0x04,
indicator_pattern[state].blinking);
if (ret < 0)
goto out;
ret = regmap_write(chip->regmap, 0x05,
indicator_pattern[state].period_cnt);
if (ret < 0)
goto out;
return size;
out:
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
return size;
}
static DEVICE_ATTR(pattern, 0666, NULL, lm3556_indicator_pattern_store);
static const struct regmap_config lm355x_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0xFF,
};
/* module initialize */
static int __devinit lm355x_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct lm355x_platform_data *pdata = client->dev.platform_data;
struct lm355x_chip_data *chip;
int err;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
dev_err(&client->dev, "i2c functionality check fail.\n");
return -EOPNOTSUPP;
}
if (pdata == NULL) {
dev_err(&client->dev, "needs Platform Data.\n");
return -ENODATA;
}
chip = devm_kzalloc(&client->dev,
sizeof(struct lm355x_chip_data), GFP_KERNEL);
if (!chip)
return -ENOMEM;
chip->dev = &client->dev;
chip->type = id->driver_data;
switch (id->driver_data) {
case CHIP_LM3554:
chip->regs = lm3554_regs;
break;
case CHIP_LM3556:
chip->regs = lm3556_regs;
break;
default:
return -ENOSYS;
}
chip->pdata = pdata;
chip->regmap = devm_regmap_init_i2c(client, &lm355x_regmap);
if (IS_ERR(chip->regmap)) {
err = PTR_ERR(chip->regmap);
dev_err(&client->dev,
"Failed to allocate register map: %d\n", err);
return err;
}
mutex_init(&chip->lock);
i2c_set_clientdata(client, chip);
err = lm355x_chip_init(chip);
if (err < 0)
goto err_out;
/* flash */
INIT_WORK(&chip->work_flash, lm355x_deferred_strobe_brightness_set);
chip->cdev_flash.name = "flash";
chip->cdev_flash.max_brightness = 16;
chip->cdev_flash.brightness_set = lm355x_strobe_brightness_set;
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_flash);
if (err < 0)
goto err_out;
/* torch */
INIT_WORK(&chip->work_torch, lm355x_deferred_torch_brightness_set);
chip->cdev_torch.name = "torch";
chip->cdev_torch.max_brightness = 8;
chip->cdev_torch.brightness_set = lm355x_torch_brightness_set;
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_torch);
if (err < 0)
goto err_create_torch_file;
/* indicator */
INIT_WORK(&chip->work_indicator,
lm355x_deferred_indicator_brightness_set);
chip->cdev_indicator.name = "indicator";
if (id->driver_data == CHIP_LM3554)
chip->cdev_indicator.max_brightness = 4;
else
chip->cdev_indicator.max_brightness = 8;
chip->cdev_indicator.brightness_set = lm355x_indicator_brightness_set;
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_indicator);
if (err < 0)
goto err_create_indicator_file;
/* indicator pattern control only for LM3554 */
if (id->driver_data == CHIP_LM3556) {
err =
device_create_file(chip->cdev_indicator.dev,
&dev_attr_pattern);
if (err < 0)
goto err_create_pattern_file;
}
dev_info(&client->dev, "%s is initialized\n",
lm355x_name[id->driver_data]);
return 0;
err_create_pattern_file:
led_classdev_unregister(&chip->cdev_indicator);
err_create_indicator_file:
led_classdev_unregister(&chip->cdev_torch);
err_create_torch_file:
led_classdev_unregister(&chip->cdev_flash);
err_out:
return err;
}
static int __devexit lm355x_remove(struct i2c_client *client)
{
struct lm355x_chip_data *chip = i2c_get_clientdata(client);
struct lm355x_reg_data *preg = chip->regs;
regmap_write(chip->regmap, preg[REG_OPMODE].regno, 0);
if (chip->type == CHIP_LM3556)
device_remove_file(chip->cdev_indicator.dev, &dev_attr_pattern);
led_classdev_unregister(&chip->cdev_indicator);
flush_work(&chip->work_indicator);
led_classdev_unregister(&chip->cdev_torch);
flush_work(&chip->work_torch);
led_classdev_unregister(&chip->cdev_flash);
flush_work(&chip->work_flash);
dev_info(&client->dev, "%s is removed\n", lm355x_name[chip->type]);
return 0;
}
static const struct i2c_device_id lm355x_id[] = {
{LM3554_NAME, CHIP_LM3554},
{LM3556_NAME, CHIP_LM3556},
{}
};
MODULE_DEVICE_TABLE(i2c, lm355x_id);
static struct i2c_driver lm355x_i2c_driver = {
.driver = {
.name = LM355x_NAME,
.owner = THIS_MODULE,
.pm = NULL,
},
.probe = lm355x_probe,
.remove = __devexit_p(lm355x_remove),
.id_table = lm355x_id,
};
module_i2c_driver(lm355x_i2c_driver);
MODULE_DESCRIPTION("Texas Instruments Flash Lighting driver for LM355x");
MODULE_AUTHOR("Daniel Jeong <daniel.jeong@ti.com>");
MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@gmail.com>");
MODULE_LICENSE("GPL v2");

462
drivers/leds/leds-lm3642.c Normal file
View File

@ -0,0 +1,462 @@
/*
* Simple driver for Texas Instruments LM3642 LED Flash driver chip
* Copyright (C) 2012 Texas Instruments
*
* 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/delay.h>
#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/fs.h>
#include <linux/regmap.h>
#include <linux/workqueue.h>
#include <linux/platform_data/leds-lm3642.h>
#define REG_FILT_TIME (0x0)
#define REG_IVFM_MODE (0x1)
#define REG_TORCH_TIME (0x6)
#define REG_FLASH (0x8)
#define REG_I_CTRL (0x9)
#define REG_ENABLE (0xA)
#define REG_FLAG (0xB)
#define REG_MAX (0xB)
#define UVLO_EN_SHIFT (7)
#define IVM_D_TH_SHIFT (2)
#define TORCH_RAMP_UP_TIME_SHIFT (3)
#define TORCH_RAMP_DN_TIME_SHIFT (0)
#define INDUCTOR_I_LIMIT_SHIFT (6)
#define FLASH_RAMP_TIME_SHIFT (3)
#define FLASH_TOUT_TIME_SHIFT (0)
#define TORCH_I_SHIFT (4)
#define FLASH_I_SHIFT (0)
#define IVFM_SHIFT (7)
#define TX_PIN_EN_SHIFT (6)
#define STROBE_PIN_EN_SHIFT (5)
#define TORCH_PIN_EN_SHIFT (4)
#define MODE_BITS_SHIFT (0)
#define UVLO_EN_MASK (0x1)
#define IVM_D_TH_MASK (0x7)
#define TORCH_RAMP_UP_TIME_MASK (0x7)
#define TORCH_RAMP_DN_TIME_MASK (0x7)
#define INDUCTOR_I_LIMIT_MASK (0x1)
#define FLASH_RAMP_TIME_MASK (0x7)
#define FLASH_TOUT_TIME_MASK (0x7)
#define TORCH_I_MASK (0x7)
#define FLASH_I_MASK (0xF)
#define IVFM_MASK (0x1)
#define TX_PIN_EN_MASK (0x1)
#define STROBE_PIN_EN_MASK (0x1)
#define TORCH_PIN_EN_MASK (0x1)
#define MODE_BITS_MASK (0x73)
#define EX_PIN_CONTROL_MASK (0x71)
#define EX_PIN_ENABLE_MASK (0x70)
enum lm3642_mode {
MODES_STASNDBY = 0,
MODES_INDIC,
MODES_TORCH,
MODES_FLASH
};
struct lm3642_chip_data {
struct device *dev;
struct led_classdev cdev_flash;
struct led_classdev cdev_torch;
struct led_classdev cdev_indicator;
struct work_struct work_flash;
struct work_struct work_torch;
struct work_struct work_indicator;
u8 br_flash;
u8 br_torch;
u8 br_indicator;
enum lm3642_torch_pin_enable torch_pin;
enum lm3642_strobe_pin_enable strobe_pin;
enum lm3642_tx_pin_enable tx_pin;
struct lm3642_platform_data *pdata;
struct regmap *regmap;
struct mutex lock;
unsigned int last_flag;
};
/* chip initialize */
static int __devinit lm3642_chip_init(struct lm3642_chip_data *chip)
{
int ret;
struct lm3642_platform_data *pdata = chip->pdata;
/* set enable register */
ret = regmap_update_bits(chip->regmap, REG_ENABLE, EX_PIN_ENABLE_MASK,
pdata->tx_pin);
if (ret < 0)
dev_err(chip->dev, "Failed to update REG_ENABLE Register\n");
return ret;
}
/* chip control */
static int lm3642_control(struct lm3642_chip_data *chip,
u8 brightness, enum lm3642_mode opmode)
{
int ret;
ret = regmap_read(chip->regmap, REG_FLAG, &chip->last_flag);
if (ret < 0) {
dev_err(chip->dev, "Failed to read REG_FLAG Register\n");
goto out;
}
if (chip->last_flag)
dev_info(chip->dev, "Last FLAG is 0x%x\n", chip->last_flag);
/* brightness 0 means off-state */
if (!brightness)
opmode = MODES_STASNDBY;
switch (opmode) {
case MODES_TORCH:
ret = regmap_update_bits(chip->regmap, REG_I_CTRL,
TORCH_I_MASK << TORCH_I_SHIFT,
(brightness - 1) << TORCH_I_SHIFT);
if (chip->torch_pin)
opmode |= (TORCH_PIN_EN_MASK << TORCH_PIN_EN_SHIFT);
break;
case MODES_FLASH:
ret = regmap_update_bits(chip->regmap, REG_I_CTRL,
FLASH_I_MASK << FLASH_I_SHIFT,
(brightness - 1) << FLASH_I_SHIFT);
if (chip->strobe_pin)
opmode |= (STROBE_PIN_EN_MASK << STROBE_PIN_EN_SHIFT);
break;
case MODES_INDIC:
ret = regmap_update_bits(chip->regmap, REG_I_CTRL,
TORCH_I_MASK << TORCH_I_SHIFT,
(brightness - 1) << TORCH_I_SHIFT);
break;
case MODES_STASNDBY:
break;
default:
return ret;
}
if (ret < 0) {
dev_err(chip->dev, "Failed to write REG_I_CTRL Register\n");
goto out;
}
if (chip->tx_pin)
opmode |= (TX_PIN_EN_MASK << TX_PIN_EN_SHIFT);
ret = regmap_update_bits(chip->regmap, REG_ENABLE,
MODE_BITS_MASK << MODE_BITS_SHIFT,
opmode << MODE_BITS_SHIFT);
out:
return ret;
}
/* torch */
/* torch pin config for lm3642*/
static ssize_t lm3642_torch_pin_store(struct device *dev,
struct device_attribute *devAttr,
const char *buf, size_t size)
{
ssize_t ret;
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct lm3642_chip_data *chip =
container_of(led_cdev, struct lm3642_chip_data, cdev_indicator);
unsigned int state;
ret = kstrtouint(buf, 10, &state);
if (ret)
goto out_strtoint;
if (state != 0)
state = 0x01 << TORCH_PIN_EN_SHIFT;
chip->torch_pin = state;
ret = regmap_update_bits(chip->regmap, REG_ENABLE,
TORCH_PIN_EN_MASK << TORCH_PIN_EN_SHIFT,
state);
if (ret < 0)
goto out;
return size;
out:
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
return size;
out_strtoint:
dev_err(chip->dev, "%s: fail to change str to int\n", __func__);
return size;
}
static DEVICE_ATTR(torch_pin, 0666, NULL, lm3642_torch_pin_store);
static void lm3642_deferred_torch_brightness_set(struct work_struct *work)
{
struct lm3642_chip_data *chip =
container_of(work, struct lm3642_chip_data, work_torch);
mutex_lock(&chip->lock);
lm3642_control(chip, chip->br_torch, MODES_TORCH);
mutex_unlock(&chip->lock);
}
static void lm3642_torch_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm3642_chip_data *chip =
container_of(cdev, struct lm3642_chip_data, cdev_torch);
chip->br_torch = brightness;
schedule_work(&chip->work_torch);
}
/* flash */
/* strobe pin config for lm3642*/
static ssize_t lm3642_strobe_pin_store(struct device *dev,
struct device_attribute *devAttr,
const char *buf, size_t size)
{
ssize_t ret;
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct lm3642_chip_data *chip =
container_of(led_cdev, struct lm3642_chip_data, cdev_indicator);
unsigned int state;
ret = kstrtouint(buf, 10, &state);
if (ret)
goto out_strtoint;
if (state != 0)
state = 0x01 << STROBE_PIN_EN_SHIFT;
chip->strobe_pin = state;
ret = regmap_update_bits(chip->regmap, REG_ENABLE,
STROBE_PIN_EN_MASK << STROBE_PIN_EN_SHIFT,
state);
if (ret < 0)
goto out;
return size;
out:
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
return size;
out_strtoint:
dev_err(chip->dev, "%s: fail to change str to int\n", __func__);
return size;
}
static DEVICE_ATTR(strobe_pin, 0666, NULL, lm3642_strobe_pin_store);
static void lm3642_deferred_strobe_brightness_set(struct work_struct *work)
{
struct lm3642_chip_data *chip =
container_of(work, struct lm3642_chip_data, work_flash);
mutex_lock(&chip->lock);
lm3642_control(chip, chip->br_flash, MODES_FLASH);
mutex_unlock(&chip->lock);
}
static void lm3642_strobe_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm3642_chip_data *chip =
container_of(cdev, struct lm3642_chip_data, cdev_flash);
chip->br_flash = brightness;
schedule_work(&chip->work_flash);
}
/* indicator */
static void lm3642_deferred_indicator_brightness_set(struct work_struct *work)
{
struct lm3642_chip_data *chip =
container_of(work, struct lm3642_chip_data, work_indicator);
mutex_lock(&chip->lock);
lm3642_control(chip, chip->br_indicator, MODES_INDIC);
mutex_unlock(&chip->lock);
}
static void lm3642_indicator_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm3642_chip_data *chip =
container_of(cdev, struct lm3642_chip_data, cdev_indicator);
chip->br_indicator = brightness;
schedule_work(&chip->work_indicator);
}
static const struct regmap_config lm3642_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = REG_MAX,
};
static int __devinit lm3642_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct lm3642_platform_data *pdata = client->dev.platform_data;
struct lm3642_chip_data *chip;
int err;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
dev_err(&client->dev, "i2c functionality check fail.\n");
return -EOPNOTSUPP;
}
if (pdata == NULL) {
dev_err(&client->dev, "needs Platform Data.\n");
return -ENODATA;
}
chip = devm_kzalloc(&client->dev,
sizeof(struct lm3642_chip_data), GFP_KERNEL);
if (!chip)
return -ENOMEM;
chip->dev = &client->dev;
chip->pdata = pdata;
chip->tx_pin = pdata->tx_pin;
chip->torch_pin = pdata->torch_pin;
chip->strobe_pin = pdata->strobe_pin;
chip->regmap = devm_regmap_init_i2c(client, &lm3642_regmap);
if (IS_ERR(chip->regmap)) {
err = PTR_ERR(chip->regmap);
dev_err(&client->dev, "Failed to allocate register map: %d\n",
err);
return err;
}
mutex_init(&chip->lock);
i2c_set_clientdata(client, chip);
err = lm3642_chip_init(chip);
if (err < 0)
goto err_out;
/* flash */
INIT_WORK(&chip->work_flash, lm3642_deferred_strobe_brightness_set);
chip->cdev_flash.name = "flash";
chip->cdev_flash.max_brightness = 16;
chip->cdev_flash.brightness_set = lm3642_strobe_brightness_set;
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_flash);
if (err < 0) {
dev_err(chip->dev, "failed to register flash\n");
goto err_out;
}
err = device_create_file(chip->cdev_flash.dev, &dev_attr_strobe_pin);
if (err < 0) {
dev_err(chip->dev, "failed to create strobe-pin file\n");
goto err_create_flash_pin_file;
}
/* torch */
INIT_WORK(&chip->work_torch, lm3642_deferred_torch_brightness_set);
chip->cdev_torch.name = "torch";
chip->cdev_torch.max_brightness = 8;
chip->cdev_torch.brightness_set = lm3642_torch_brightness_set;
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_torch);
if (err < 0) {
dev_err(chip->dev, "failed to register torch\n");
goto err_create_torch_file;
}
err = device_create_file(chip->cdev_torch.dev, &dev_attr_torch_pin);
if (err < 0) {
dev_err(chip->dev, "failed to create torch-pin file\n");
goto err_create_torch_pin_file;
}
/* indicator */
INIT_WORK(&chip->work_indicator,
lm3642_deferred_indicator_brightness_set);
chip->cdev_indicator.name = "indicator";
chip->cdev_indicator.max_brightness = 8;
chip->cdev_indicator.brightness_set = lm3642_indicator_brightness_set;
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_indicator);
if (err < 0) {
dev_err(chip->dev, "failed to register indicator\n");
goto err_create_indicator_file;
}
dev_info(&client->dev, "LM3642 is initialized\n");
return 0;
err_create_indicator_file:
device_remove_file(chip->cdev_torch.dev, &dev_attr_torch_pin);
err_create_torch_pin_file:
led_classdev_unregister(&chip->cdev_torch);
err_create_torch_file:
device_remove_file(chip->cdev_flash.dev, &dev_attr_strobe_pin);
err_create_flash_pin_file:
led_classdev_unregister(&chip->cdev_flash);
err_out:
return err;
}
static int __devexit lm3642_remove(struct i2c_client *client)
{
struct lm3642_chip_data *chip = i2c_get_clientdata(client);
led_classdev_unregister(&chip->cdev_indicator);
flush_work(&chip->work_indicator);
device_remove_file(chip->cdev_torch.dev, &dev_attr_torch_pin);
led_classdev_unregister(&chip->cdev_torch);
flush_work(&chip->work_torch);
device_remove_file(chip->cdev_flash.dev, &dev_attr_strobe_pin);
led_classdev_unregister(&chip->cdev_flash);
flush_work(&chip->work_flash);
regmap_write(chip->regmap, REG_ENABLE, 0);
return 0;
}
static const struct i2c_device_id lm3642_id[] = {
{LM3642_NAME, 0},
{}
};
MODULE_DEVICE_TABLE(i2c, lm3642_id);
static struct i2c_driver lm3642_i2c_driver = {
.driver = {
.name = LM3642_NAME,
.owner = THIS_MODULE,
.pm = NULL,
},
.probe = lm3642_probe,
.remove = __devexit_p(lm3642_remove),
.id_table = lm3642_id,
};
module_i2c_driver(lm3642_i2c_driver);
MODULE_DESCRIPTION("Texas Instruments Flash Lighting driver for LM3642");
MODULE_AUTHOR("Daniel Jeong <daniel.jeong@ti.com>");
MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@gmail.com>");
MODULE_LICENSE("GPL v2");

75
drivers/leds/leds-lp5523.c
View File

@ -104,6 +104,11 @@
#define LED_ACTIVE(mux, led) (!!(mux & (0x0001 << led)))
#define SHIFT_MASK(id) (((id) - 1) * 2)
enum lp5523_chip_id {
LP5523,
LP55231,
};
struct lp5523_engine {
int id;
u8 mode;
@ -150,7 +155,7 @@ static inline struct lp5523_chip *led_to_lp5523(struct lp5523_led *led)
leds[led->id]);
}
static int lp5523_set_mode(struct lp5523_engine *engine, u8 mode);
static void lp5523_set_mode(struct lp5523_engine *engine, u8 mode);
static int lp5523_set_engine_mode(struct lp5523_engine *engine, u8 mode);
static int lp5523_load_program(struct lp5523_engine *engine, const u8 *pattern);
@ -177,7 +182,7 @@ static int lp5523_detect(struct i2c_client *client)
int ret;
u8 buf;
ret = lp5523_write(client, LP5523_REG_ENABLE, 0x40);
ret = lp5523_write(client, LP5523_REG_ENABLE, LP5523_ENABLE);
if (ret)
return ret;
ret = lp5523_read(client, LP5523_REG_ENABLE, &buf);
@ -338,7 +343,8 @@ static int lp5523_mux_parse(const char *buf, u16 *mux, size_t len)
{
int i;
u16 tmp_mux = 0;
len = len < LP5523_LEDS ? len : LP5523_LEDS;
len = min_t(int, len, LP5523_LEDS);
for (i = 0; i < len; i++) {
switch (buf[i]) {
case '1':
@ -546,6 +552,9 @@ static int lp5523_do_store_load(struct lp5523_engine *engine,
unsigned cmd;
u8 pattern[LP5523_PROGRAM_LENGTH] = {0};
if (engine->mode != LP5523_CMD_LOAD)
return -EINVAL;
while ((offset < len - 1) && (i < LP5523_PROGRAM_LENGTH)) {
/* separate sscanfs because length is working only for %s */
ret = sscanf(buf + offset, "%2s%n ", c, &nrchars);
@ -563,12 +572,7 @@ static int lp5523_do_store_load(struct lp5523_engine *engine,
goto fail;
mutex_lock(&chip->lock);
if (engine->mode == LP5523_CMD_LOAD)
ret = lp5523_load_program(engine, pattern);
else
ret = -EINVAL;
ret = lp5523_load_program(engine, pattern);
mutex_unlock(&chip->lock);
if (ret) {
@ -755,6 +759,7 @@ static struct attribute *lp5523_attributes[] = {
&dev_attr_engine2_leds.attr,
&dev_attr_engine3_load.attr,
&dev_attr_engine3_leds.attr,
NULL,
};
static const struct attribute_group lp5523_group = {
@ -789,26 +794,28 @@ static void lp5523_unregister_sysfs(struct i2c_client *client)
/*--------------------------------------------------------------*/
/* Set chip operating mode */
/*--------------------------------------------------------------*/
static int lp5523_set_mode(struct lp5523_engine *engine, u8 mode)
static void lp5523_set_mode(struct lp5523_engine *engine, u8 mode)
{
int ret = 0;
/* if in that mode already do nothing, except for run */
if (mode == engine->mode && mode != LP5523_CMD_RUN)
return 0;
return;
if (mode == LP5523_CMD_RUN) {
ret = lp5523_run_program(engine);
} else if (mode == LP5523_CMD_LOAD) {
switch (mode) {
case LP5523_CMD_RUN:
lp5523_run_program(engine);
break;
case LP5523_CMD_LOAD:
lp5523_set_engine_mode(engine, LP5523_CMD_DISABLED);
lp5523_set_engine_mode(engine, LP5523_CMD_LOAD);
} else if (mode == LP5523_CMD_DISABLED) {
break;
case LP5523_CMD_DISABLED:
lp5523_set_engine_mode(engine, LP5523_CMD_DISABLED);
break;
default:
return;
}
engine->mode = mode;
return ret;
}
/*--------------------------------------------------------------*/
@ -827,7 +834,8 @@ static int __init lp5523_init_engine(struct lp5523_engine *engine, int id)
}
static int __devinit lp5523_init_led(struct lp5523_led *led, struct device *dev,
int chan, struct lp5523_platform_data *pdata)
int chan, struct lp5523_platform_data *pdata,
const char *chip_name)
{
char name[32];
int res;
@ -846,10 +854,14 @@ static int __devinit lp5523_init_led(struct lp5523_led *led, struct device *dev,
return -EINVAL;
}
snprintf(name, sizeof(name), "%s:channel%d",
pdata->label ?: "lp5523", chan);
if (pdata->led_config[chan].name) {
led->cdev.name = pdata->led_config[chan].name;
} else {
snprintf(name, sizeof(name), "%s:channel%d",
pdata->label ? : chip_name, chan);
led->cdev.name = name;
}
led->cdev.name = name;
led->cdev.brightness_set = lp5523_set_brightness;
res = led_classdev_register(dev, &led->cdev);
if (res < 0) {
@ -917,7 +929,7 @@ static int __devinit lp5523_probe(struct i2c_client *client,
if (ret)
goto fail1;
dev_info(&client->dev, "LP5523 Programmable led chip found\n");
dev_info(&client->dev, "%s Programmable led chip found\n", id->name);
/* Initialize engines */
for (i = 0; i < ARRAY_SIZE(chip->engines); i++) {
@ -945,7 +957,8 @@ static int __devinit lp5523_probe(struct i2c_client *client,
INIT_WORK(&chip->leds[led].brightness_work,
lp5523_led_brightness_work);
ret = lp5523_init_led(&chip->leds[led], &client->dev, i, pdata);
ret = lp5523_init_led(&chip->leds[led], &client->dev, i, pdata,
id->name);
if (ret) {
dev_err(&client->dev, "error initializing leds\n");
goto fail2;
@ -970,7 +983,7 @@ static int __devinit lp5523_probe(struct i2c_client *client,
fail2:
for (i = 0; i < chip->num_leds; i++) {
led_classdev_unregister(&chip->leds[i].cdev);
cancel_work_sync(&chip->leds[i].brightness_work);
flush_work(&chip->leds[i].brightness_work);
}
fail1:
if (pdata->enable)
@ -985,11 +998,14 @@ static int lp5523_remove(struct i2c_client *client)
struct lp5523_chip *chip = i2c_get_clientdata(client);
int i;
/* Disable engine mode */
lp5523_write(client, LP5523_REG_OP_MODE, LP5523_CMD_DISABLED);
lp5523_unregister_sysfs(client);
for (i = 0; i < chip->num_leds; i++) {
led_classdev_unregister(&chip->leds[i].cdev);
cancel_work_sync(&chip->leds[i].brightness_work);
flush_work(&chip->leds[i].brightness_work);
}
if (chip->pdata->enable)
@ -1000,7 +1016,8 @@ static int lp5523_remove(struct i2c_client *client)
}
static const struct i2c_device_id lp5523_id[] = {
{ "lp5523", 0 },
{ "lp5523", LP5523 },
{ "lp55231", LP55231 },
{ }
};
@ -1008,7 +1025,7 @@ MODULE_DEVICE_TABLE(i2c, lp5523_id);
static struct i2c_driver lp5523_driver = {
.driver = {
.name = "lp5523",
.name = "lp5523x",
},
.probe = lp5523_probe,
.remove = lp5523_remove,

19
drivers/leds/leds-pca9633.c
View File

@ -22,6 +22,7 @@
#include <linux/i2c.h>
#include <linux/workqueue.h>
#include <linux/slab.h>
#include <linux/platform_data/leds-pca9633.h>
/* LED select registers determine the source that drives LED outputs */
#define PCA9633_LED_OFF 0x0 /* LED driver off */
@ -96,13 +97,13 @@ static int __devinit pca9633_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct pca9633_led *pca9633;
struct led_platform_data *pdata;
struct pca9633_platform_data *pdata;
int i, err;
pdata = client->dev.platform_data;
if (pdata) {
if (pdata->num_leds <= 0 || pdata->num_leds > 4) {
if (pdata->leds.num_leds <= 0 || pdata->leds.num_leds > 4) {
dev_err(&client->dev, "board info must claim at most 4 LEDs");
return -EINVAL;
}
@ -119,14 +120,14 @@ static int __devinit pca9633_probe(struct i2c_client *client,
pca9633[i].led_num = i;
/* Platform data can specify LED names and default triggers */
if (pdata && i < pdata->num_leds) {
if (pdata->leds[i].name)
if (pdata && i < pdata->leds.num_leds) {
if (pdata->leds.leds[i].name)
snprintf(pca9633[i].name,
sizeof(pca9633[i].name), "pca9633:%s",
pdata->leds[i].name);
if (pdata->leds[i].default_trigger)
pdata->leds.leds[i].name);
if (pdata->leds.leds[i].default_trigger)
pca9633[i].led_cdev.default_trigger =
pdata->leds[i].default_trigger;
pdata->leds.leds[i].default_trigger;
} else {
snprintf(pca9633[i].name, sizeof(pca9633[i].name),
"pca9633:%d", i);
@ -145,6 +146,10 @@ static int __devinit pca9633_probe(struct i2c_client *client,
/* Disable LED all-call address and set normal mode */
i2c_smbus_write_byte_data(client, PCA9633_MODE1, 0x00);
/* Configure output: open-drain or totem pole (push-pull) */
if (pdata && pdata->outdrv == PCA9633_OPEN_DRAIN)
i2c_smbus_write_byte_data(client, PCA9633_MODE2, 0x01);
/* Turn off LEDs */
i2c_smbus_write_byte_data(client, PCA9633_LEDOUT, 0x00);

29
drivers/leds/leds-wm8350.c
View File

@ -201,7 +201,7 @@ static int wm8350_led_probe(struct platform_device *pdev)
struct regulator *isink, *dcdc;
struct wm8350_led *led;
struct wm8350_led_platform_data *pdata = pdev->dev.platform_data;
int ret, i;
int i;
if (pdata == NULL) {
dev_err(&pdev->dev, "no platform data\n");
@ -214,24 +214,21 @@ static int wm8350_led_probe(struct platform_device *pdev)
return -EINVAL;
}
isink = regulator_get(&pdev->dev, "led_isink");
isink = devm_regulator_get(&pdev->dev, "led_isink");
if (IS_ERR(isink)) {
printk(KERN_ERR "%s: can't get ISINK\n", __func__);
return PTR_ERR(isink);
}
dcdc = regulator_get(&pdev->dev, "led_vcc");
dcdc = devm_regulator_get(&pdev->dev, "led_vcc");
if (IS_ERR(dcdc)) {
printk(KERN_ERR "%s: can't get DCDC\n", __func__);
ret = PTR_ERR(dcdc);
goto err_isink;
return PTR_ERR(dcdc);
}
led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL);
if (led == NULL) {
ret = -ENOMEM;
goto err_dcdc;
}
if (led == NULL)
return -ENOMEM;
led->cdev.brightness_set = wm8350_led_set;
led->cdev.default_trigger = pdata->default_trigger;
@ -257,17 +254,7 @@ static int wm8350_led_probe(struct platform_device *pdev)
led->value = LED_OFF;
platform_set_drvdata(pdev, led);
ret = led_classdev_register(&pdev->dev, &led->cdev);
if (ret < 0)
goto err_dcdc;
return 0;
err_dcdc:
regulator_put(dcdc);
err_isink:
regulator_put(isink);
return ret;
return led_classdev_register(&pdev->dev, &led->cdev);
}
static int wm8350_led_remove(struct platform_device *pdev)
@ -277,8 +264,6 @@ static int wm8350_led_remove(struct platform_device *pdev)
led_classdev_unregister(&led->cdev);
flush_work(&led->work);
wm8350_led_disable(led);
regulator_put(led->dcdc);
regulator_put(led->isink);
return 0;
}

2
drivers/leds/leds.h
View File

@ -32,6 +32,8 @@ static inline int led_get_brightness(struct led_classdev *led_cdev)
return led_cdev->brightness;
}
void led_stop_software_blink(struct led_classdev *led_cdev);
extern struct rw_semaphore leds_list_lock;
extern struct list_head leds_list;

1
include/linux/leds-lp5523.h
View File

@ -26,6 +26,7 @@
/* See Documentation/leds/leds-lp5523.txt */
struct lp5523_led_config {
const char *name;
u8 chan_nr;
u8 led_current; /* mA x10, 0 if led is not connected */
u8 max_current;

4
include/linux/leds.h
View File

@ -16,6 +16,7 @@
#include <linux/spinlock.h>
#include <linux/rwsem.h>
#include <linux/timer.h>
#include <linux/workqueue.h>
struct device;
/*
@ -69,6 +70,9 @@ struct led_classdev {
struct timer_list blink_timer;
int blink_brightness;
struct work_struct set_brightness_work;
int delayed_set_value;
#ifdef CONFIG_LEDS_TRIGGERS
/* Protects the trigger data below */
struct rw_semaphore trigger_lock;

50
include/linux/platform_data/leds-lm3556.h
View File

@ -1,50 +0,0 @@
/*
* Simple driver for Texas Instruments LM3556 LED Flash driver chip (Rev0x03)
* Copyright (C) 2012 Texas Instruments
*
* 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.
*
*/
#ifndef __LINUX_LM3556_H
#define __LINUX_LM3556_H
#define LM3556_NAME "leds-lm3556"
enum lm3556_pin_polarity {
PIN_LOW_ACTIVE = 0,
PIN_HIGH_ACTIVE,
};
enum lm3556_pin_enable {
PIN_DISABLED = 0,
PIN_ENABLED,
};
enum lm3556_strobe_usuage {
STROBE_EDGE_DETECT = 0,
STROBE_LEVEL_DETECT,
};
enum lm3556_indic_mode {
INDIC_MODE_INTERNAL = 0,
INDIC_MODE_EXTERNAL,
};
struct lm3556_platform_data {
enum lm3556_pin_enable torch_pin_en;
enum lm3556_pin_polarity torch_pin_polarity;
enum lm3556_strobe_usuage strobe_usuage;
enum lm3556_pin_enable strobe_pin_en;
enum lm3556_pin_polarity strobe_pin_polarity;
enum lm3556_pin_enable tx_pin_en;
enum lm3556_pin_polarity tx_pin_polarity;
enum lm3556_indic_mode indicator_mode;
};
#endif /* __LINUX_LM3556_H */

66
include/linux/platform_data/leds-lm355x.h Normal file
View File

@ -0,0 +1,66 @@
/*
* Copyright (C) 2012 Texas Instruments
*
* License Terms: GNU General Public License v2
*
* Simple driver for Texas Instruments LM355x LED driver chip
*
* Author: G.Shark Jeong <gshark.jeong@gmail.com>
* Daniel Jeong <daniel.jeong@ti.com>
*/
#define LM355x_NAME "leds-lm355x"
#define LM3554_NAME "leds-lm3554"
#define LM3556_NAME "leds-lm3556"
/* lm3554 : strobe def. on */
enum lm355x_strobe {
LM355x_PIN_STROBE_DISABLE = 0x00,
LM355x_PIN_STROBE_ENABLE = 0x01,
};
enum lm355x_torch {
LM355x_PIN_TORCH_DISABLE = 0,
LM3554_PIN_TORCH_ENABLE = 0x80,
LM3556_PIN_TORCH_ENABLE = 0x10,
};
enum lm355x_tx2 {
LM355x_PIN_TX_DISABLE = 0,
LM3554_PIN_TX_ENABLE = 0x20,
LM3556_PIN_TX_ENABLE = 0x40,
};
enum lm355x_ntc {
LM355x_PIN_NTC_DISABLE = 0,
LM3554_PIN_NTC_ENABLE = 0x08,
LM3556_PIN_NTC_ENABLE = 0x80,
};
enum lm355x_pmode {
LM355x_PMODE_DISABLE = 0,
LM355x_PMODE_ENABLE = 0x04,
};
/*
* struct lm3554_platform_data
* @pin_strobe: strobe input
* @pin_torch : input pin
* lm3554-tx1/torch/gpio1
* lm3556-torch
* @pin_tx2 : input pin
* lm3554-envm/tx2/gpio2
* lm3556-tx pin
* @ntc_pin : output pin
* lm3554-ledi/ntc
* lm3556-temp pin
* @pass_mode : pass mode
*/
struct lm355x_platform_data {
enum lm355x_strobe pin_strobe;
enum lm355x_torch pin_tx1;
enum lm355x_tx2 pin_tx2;
enum lm355x_ntc ntc_pin;
enum lm355x_pmode pass_mode;
};

38
include/linux/platform_data/leds-lm3642.h Normal file
View File

@ -0,0 +1,38 @@
/*
* Copyright (C) 2012 Texas Instruments
*
* License Terms: GNU General Public License v2
*
* Simple driver for Texas Instruments LM3642 LED driver chip
*
* Author: G.Shark Jeong <gshark.jeong@gmail.com>
* Daniel Jeong <daniel.jeong@ti.com>
*/
#ifndef __LINUX_LM3642_H
#define __LINUX_LM3642_H
#define LM3642_NAME "leds-lm3642"
enum lm3642_torch_pin_enable {
LM3642_TORCH_PIN_DISABLE = 0x00,
LM3642_TORCH_PIN_ENABLE = 0x10,
};
enum lm3642_strobe_pin_enable {
LM3642_STROBE_PIN_DISABLE = 0x00,
LM3642_STROBE_PIN_ENABLE = 0x20,
};
enum lm3642_tx_pin_enable {
LM3642_TX_PIN_DISABLE = 0x00,
LM3642_TX_PIN_ENABLE = 0x40,
};
struct lm3642_platform_data {
enum lm3642_torch_pin_enable torch_pin;
enum lm3642_strobe_pin_enable strobe_pin;
enum lm3642_tx_pin_enable tx_pin;
};
#endif /* __LINUX_LM3642_H */

35
include/linux/platform_data/leds-pca9633.h Normal file
View File

@ -0,0 +1,35 @@
/*
* PCA9633 LED chip driver.
*
* Copyright 2012 bct electronic GmbH
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef __LINUX_PCA9633_H
#define __LINUX_PCA9633_H
#include <linux/leds.h>
enum pca9633_outdrv {
PCA9633_OPEN_DRAIN,
PCA9633_TOTEM_POLE, /* aka push-pull */
};
struct pca9633_platform_data {
struct led_platform_data leds;
enum pca9633_outdrv outdrv;
};
#endif /* __LINUX_PCA9633_H*/