Release 4.7 drivers/leds/leds-da9052.c
/*
* LED Driver for Dialog DA9052 PMICs.
*
* Copyright(c) 2012 Dialog Semiconductor Ltd.
*
* Author: David Dajun Chen <dchen@diasemi.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <linux/slab.h>
#include <linux/mfd/da9052/reg.h>
#include <linux/mfd/da9052/da9052.h>
#include <linux/mfd/da9052/pdata.h>
#define DA9052_OPENDRAIN_OUTPUT 2
#define DA9052_SET_HIGH_LVL_OUTPUT (1 << 3)
#define DA9052_MASK_UPPER_NIBBLE 0xF0
#define DA9052_MASK_LOWER_NIBBLE 0x0F
#define DA9052_NIBBLE_SHIFT 4
#define DA9052_MAX_BRIGHTNESS 0x5f
struct da9052_led {
struct led_classdev cdev;
struct da9052 *da9052;
unsigned char led_index;
unsigned char id;
};
static unsigned char led_reg[] = {
DA9052_LED_CONT_4_REG,
DA9052_LED_CONT_5_REG,
};
static int da9052_set_led_brightness(struct da9052_led *led,
enum led_brightness brightness)
{
u8 val;
int error;
val = (brightness & 0x7f) | DA9052_LED_CONT_DIM;
error = da9052_reg_write(led->da9052, led_reg[led->led_index], val);
if (error < 0)
dev_err(led->da9052->dev, "Failed to set led brightness, %d\n",
error);
return error;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david dajun chen | david dajun chen | 67 | 94.37% | 1 | 50.00% |
| andrew lunn | andrew lunn | 4 | 5.63% | 1 | 50.00% |
| Total | 71 | 100.00% | 2 | 100.00% |
static int da9052_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
struct da9052_led *led =
container_of(led_cdev, struct da9052_led, cdev);
return da9052_set_led_brightness(led, value);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david dajun chen | david dajun chen | 30 | 78.95% | 1 | 50.00% |
| andrew lunn | andrew lunn | 8 | 21.05% | 1 | 50.00% |
| Total | 38 | 100.00% | 2 | 100.00% |
static int da9052_configure_leds(struct da9052 *da9052)
{
int error;
unsigned char register_value = DA9052_OPENDRAIN_OUTPUT
| DA9052_SET_HIGH_LVL_OUTPUT;
error = da9052_reg_update(da9052, DA9052_GPIO_14_15_REG,
DA9052_MASK_LOWER_NIBBLE,
register_value);
if (error < 0) {
dev_err(da9052->dev, "Failed to write GPIO 14-15 reg, %d\n",
error);
return error;
}
error = da9052_reg_update(da9052, DA9052_GPIO_14_15_REG,
DA9052_MASK_UPPER_NIBBLE,
register_value << DA9052_NIBBLE_SHIFT);
if (error < 0)
dev_err(da9052->dev, "Failed to write GPIO 14-15 reg, %d\n",
error);
return error;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david dajun chen | david dajun chen | 92 | 100.00% | 1 | 100.00% |
| Total | 92 | 100.00% | 1 | 100.00% |
static int da9052_led_probe(struct platform_device *pdev)
{
struct da9052_pdata *pdata;
struct da9052 *da9052;
struct led_platform_data *pled;
struct da9052_led *led = NULL;
int error = -ENODEV;
int i;
da9052 = dev_get_drvdata(pdev->dev.parent);
pdata = dev_get_platdata(da9052->dev);
if (pdata == NULL) {
dev_err(&pdev->dev, "No platform data\n");
goto err;
}
pled = pdata->pled;
if (pled == NULL) {
dev_err(&pdev->dev, "No platform data for LED\n");
goto err;
}
led = devm_kzalloc(&pdev->dev,
sizeof(struct da9052_led) * pled->num_leds,
GFP_KERNEL);
if (!led) {
error = -ENOMEM;
goto err;
}
for (i = 0; i < pled->num_leds; i++) {
led[i].cdev.name = pled->leds[i].name;
led[i].cdev.brightness_set_blocking = da9052_led_set;
led[i].cdev.brightness = LED_OFF;
led[i].cdev.max_brightness = DA9052_MAX_BRIGHTNESS;
led[i].led_index = pled->leds[i].flags;
led[i].da9052 = dev_get_drvdata(pdev->dev.parent);
error = led_classdev_register(pdev->dev.parent, &led[i].cdev);
if (error) {
dev_err(&pdev->dev, "Failed to register led %d\n",
led[i].led_index);
goto err_register;
}
error = da9052_set_led_brightness(&led[i],
led[i].cdev.brightness);
if (error) {
dev_err(&pdev->dev, "Unable to init led %d\n",
led[i].led_index);
continue;
}
}
error = da9052_configure_leds(led->da9052);
if (error) {
dev_err(&pdev->dev, "Failed to configure GPIO LED%d\n", error);
goto err_register;
}
platform_set_drvdata(pdev, led);
return 0;
err_register:
for (i = i - 1; i >= 0; i--)
led_classdev_unregister(&led[i].cdev);
err:
return error;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david dajun chen | david dajun chen | 395 | 96.58% | 1 | 25.00% |
| andrew lunn | andrew lunn | 10 | 2.44% | 1 | 25.00% |
| jingoo han | jingoo han | 3 | 0.73% | 1 | 25.00% |
| xiubo li | xiubo li | 1 | 0.24% | 1 | 25.00% |
| Total | 409 | 100.00% | 4 | 100.00% |
static int da9052_led_remove(struct platform_device *pdev)
{
struct da9052_led *led = platform_get_drvdata(pdev);
struct da9052_pdata *pdata;
struct da9052 *da9052;
struct led_platform_data *pled;
int i;
da9052 = dev_get_drvdata(pdev->dev.parent);
pdata = dev_get_platdata(da9052->dev);
pled = pdata->pled;
for (i = 0; i < pled->num_leds; i++) {
da9052_set_led_brightness(&led[i], LED_OFF);
led_classdev_unregister(&led[i].cdev);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david dajun chen | david dajun chen | 102 | 95.33% | 1 | 33.33% |
| jingoo han | jingoo han | 3 | 2.80% | 1 | 33.33% |
| andrew lunn | andrew lunn | 2 | 1.87% | 1 | 33.33% |
| Total | 107 | 100.00% | 3 | 100.00% |
static struct platform_driver da9052_led_driver = {
.driver = {
.name = "da9052-leds",
},
.probe = da9052_led_probe,
.remove = da9052_led_remove,
};
module_platform_driver(da9052_led_driver);
MODULE_AUTHOR("Dialog Semiconductor Ltd <dchen@diasemi.com>");
MODULE_DESCRIPTION("LED driver for Dialog DA9052 PMIC");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david dajun chen | david dajun chen | 816 | 96.34% | 1 | 25.00% |
| andrew lunn | andrew lunn | 24 | 2.83% | 1 | 25.00% |
| jingoo han | jingoo han | 6 | 0.71% | 1 | 25.00% |
| xiubo li | xiubo li | 1 | 0.12% | 1 | 25.00% |
| Total | 847 | 100.00% | 4 | 100.00% |
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