mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-09 01:28:05 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
287
drivers/leds/leds-wm8350.c
Normal file
287
drivers/leds/leds-wm8350.c
Normal file
|
|
@ -0,0 +1,287 @@
|
|||
/*
|
||||
* LED driver for WM8350 driven LEDS.
|
||||
*
|
||||
* Copyright(C) 2007, 2008 Wolfson Microelectronics PLC.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/leds.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/mfd/wm8350/pmic.h>
|
||||
#include <linux/regulator/consumer.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/module.h>
|
||||
|
||||
/* Microamps */
|
||||
static const int isink_cur[] = {
|
||||
4,
|
||||
5,
|
||||
6,
|
||||
7,
|
||||
8,
|
||||
10,
|
||||
11,
|
||||
14,
|
||||
16,
|
||||
19,
|
||||
23,
|
||||
27,
|
||||
32,
|
||||
39,
|
||||
46,
|
||||
54,
|
||||
65,
|
||||
77,
|
||||
92,
|
||||
109,
|
||||
130,
|
||||
154,
|
||||
183,
|
||||
218,
|
||||
259,
|
||||
308,
|
||||
367,
|
||||
436,
|
||||
518,
|
||||
616,
|
||||
733,
|
||||
872,
|
||||
1037,
|
||||
1233,
|
||||
1466,
|
||||
1744,
|
||||
2073,
|
||||
2466,
|
||||
2933,
|
||||
3487,
|
||||
4147,
|
||||
4932,
|
||||
5865,
|
||||
6975,
|
||||
8294,
|
||||
9864,
|
||||
11730,
|
||||
13949,
|
||||
16589,
|
||||
19728,
|
||||
23460,
|
||||
27899,
|
||||
33178,
|
||||
39455,
|
||||
46920,
|
||||
55798,
|
||||
66355,
|
||||
78910,
|
||||
93840,
|
||||
111596,
|
||||
132710,
|
||||
157820,
|
||||
187681,
|
||||
223191
|
||||
};
|
||||
|
||||
#define to_wm8350_led(led_cdev) \
|
||||
container_of(led_cdev, struct wm8350_led, cdev)
|
||||
|
||||
static void wm8350_led_enable(struct wm8350_led *led)
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (led->enabled)
|
||||
return;
|
||||
|
||||
ret = regulator_enable(led->isink);
|
||||
if (ret != 0) {
|
||||
dev_err(led->cdev.dev, "Failed to enable ISINK: %d\n", ret);
|
||||
return;
|
||||
}
|
||||
|
||||
ret = regulator_enable(led->dcdc);
|
||||
if (ret != 0) {
|
||||
dev_err(led->cdev.dev, "Failed to enable DCDC: %d\n", ret);
|
||||
regulator_disable(led->isink);
|
||||
return;
|
||||
}
|
||||
|
||||
led->enabled = 1;
|
||||
}
|
||||
|
||||
static void wm8350_led_disable(struct wm8350_led *led)
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (!led->enabled)
|
||||
return;
|
||||
|
||||
ret = regulator_disable(led->dcdc);
|
||||
if (ret != 0) {
|
||||
dev_err(led->cdev.dev, "Failed to disable DCDC: %d\n", ret);
|
||||
return;
|
||||
}
|
||||
|
||||
ret = regulator_disable(led->isink);
|
||||
if (ret != 0) {
|
||||
dev_err(led->cdev.dev, "Failed to disable ISINK: %d\n", ret);
|
||||
ret = regulator_enable(led->dcdc);
|
||||
if (ret != 0)
|
||||
dev_err(led->cdev.dev, "Failed to reenable DCDC: %d\n",
|
||||
ret);
|
||||
return;
|
||||
}
|
||||
|
||||
led->enabled = 0;
|
||||
}
|
||||
|
||||
static void led_work(struct work_struct *work)
|
||||
{
|
||||
struct wm8350_led *led = container_of(work, struct wm8350_led, work);
|
||||
int ret;
|
||||
int uA;
|
||||
unsigned long flags;
|
||||
|
||||
mutex_lock(&led->mutex);
|
||||
|
||||
spin_lock_irqsave(&led->value_lock, flags);
|
||||
|
||||
if (led->value == LED_OFF) {
|
||||
spin_unlock_irqrestore(&led->value_lock, flags);
|
||||
wm8350_led_disable(led);
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* This scales linearly into the index of valid current
|
||||
* settings which results in a linear scaling of perceived
|
||||
* brightness due to the non-linear current settings provided
|
||||
* by the hardware.
|
||||
*/
|
||||
uA = (led->max_uA_index * led->value) / LED_FULL;
|
||||
spin_unlock_irqrestore(&led->value_lock, flags);
|
||||
BUG_ON(uA >= ARRAY_SIZE(isink_cur));
|
||||
|
||||
ret = regulator_set_current_limit(led->isink, isink_cur[uA],
|
||||
isink_cur[uA]);
|
||||
if (ret != 0)
|
||||
dev_err(led->cdev.dev, "Failed to set %duA: %d\n",
|
||||
isink_cur[uA], ret);
|
||||
|
||||
wm8350_led_enable(led);
|
||||
|
||||
out:
|
||||
mutex_unlock(&led->mutex);
|
||||
}
|
||||
|
||||
static void wm8350_led_set(struct led_classdev *led_cdev,
|
||||
enum led_brightness value)
|
||||
{
|
||||
struct wm8350_led *led = to_wm8350_led(led_cdev);
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&led->value_lock, flags);
|
||||
led->value = value;
|
||||
schedule_work(&led->work);
|
||||
spin_unlock_irqrestore(&led->value_lock, flags);
|
||||
}
|
||||
|
||||
static void wm8350_led_shutdown(struct platform_device *pdev)
|
||||
{
|
||||
struct wm8350_led *led = platform_get_drvdata(pdev);
|
||||
|
||||
mutex_lock(&led->mutex);
|
||||
led->value = LED_OFF;
|
||||
wm8350_led_disable(led);
|
||||
mutex_unlock(&led->mutex);
|
||||
}
|
||||
|
||||
static int wm8350_led_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct regulator *isink, *dcdc;
|
||||
struct wm8350_led *led;
|
||||
struct wm8350_led_platform_data *pdata = dev_get_platdata(&pdev->dev);
|
||||
int i;
|
||||
|
||||
if (pdata == NULL) {
|
||||
dev_err(&pdev->dev, "no platform data\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
if (pdata->max_uA < isink_cur[0]) {
|
||||
dev_err(&pdev->dev, "Invalid maximum current %duA\n",
|
||||
pdata->max_uA);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
isink = devm_regulator_get(&pdev->dev, "led_isink");
|
||||
if (IS_ERR(isink)) {
|
||||
dev_err(&pdev->dev, "%s: can't get ISINK\n", __func__);
|
||||
return PTR_ERR(isink);
|
||||
}
|
||||
|
||||
dcdc = devm_regulator_get(&pdev->dev, "led_vcc");
|
||||
if (IS_ERR(dcdc)) {
|
||||
dev_err(&pdev->dev, "%s: can't get DCDC\n", __func__);
|
||||
return PTR_ERR(dcdc);
|
||||
}
|
||||
|
||||
led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL);
|
||||
if (led == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
led->cdev.brightness_set = wm8350_led_set;
|
||||
led->cdev.default_trigger = pdata->default_trigger;
|
||||
led->cdev.name = pdata->name;
|
||||
led->cdev.flags |= LED_CORE_SUSPENDRESUME;
|
||||
led->enabled = regulator_is_enabled(isink);
|
||||
led->isink = isink;
|
||||
led->dcdc = dcdc;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(isink_cur) - 1; i++)
|
||||
if (isink_cur[i] >= pdata->max_uA)
|
||||
break;
|
||||
led->max_uA_index = i;
|
||||
if (pdata->max_uA != isink_cur[i])
|
||||
dev_warn(&pdev->dev,
|
||||
"Maximum current %duA is not directly supported,"
|
||||
" check platform data\n",
|
||||
pdata->max_uA);
|
||||
|
||||
spin_lock_init(&led->value_lock);
|
||||
mutex_init(&led->mutex);
|
||||
INIT_WORK(&led->work, led_work);
|
||||
led->value = LED_OFF;
|
||||
platform_set_drvdata(pdev, led);
|
||||
|
||||
return led_classdev_register(&pdev->dev, &led->cdev);
|
||||
}
|
||||
|
||||
static int wm8350_led_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct wm8350_led *led = platform_get_drvdata(pdev);
|
||||
|
||||
led_classdev_unregister(&led->cdev);
|
||||
flush_work(&led->work);
|
||||
wm8350_led_disable(led);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver wm8350_led_driver = {
|
||||
.driver = {
|
||||
.name = "wm8350-led",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = wm8350_led_probe,
|
||||
.remove = wm8350_led_remove,
|
||||
.shutdown = wm8350_led_shutdown,
|
||||
};
|
||||
|
||||
module_platform_driver(wm8350_led_driver);
|
||||
|
||||
MODULE_AUTHOR("Mark Brown");
|
||||
MODULE_DESCRIPTION("WM8350 LED driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:wm8350-led");
|
||||
Loading…
Add table
Add a link
Reference in a new issue