antifallobst
/
lineage_kernel_xcoverpro
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
lineage_kernel_xcoverpro/drivers/leds/leds-s2mu106.c

1214 lines
30 KiB
C
Executable File
Raw Blame History

/*
* leds-s2mu106.c - LED class driver for S2MU106 FLASH LEDs.
*
* Copyright (C) 2020 Samsung Electronics
*
* 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/init.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/power_supply.h>
#include <linux/mfd/samsung/s2mu106.h>
#include <linux/leds-s2mu106.h>
#include <linux/platform_device.h>
#include <linux/sec_batt.h>
#define CONTROL_I2C 0
#define CONTROL_GPIO 1
struct s2mu106_fled_data *g_fled_data;
extern struct class *camera_class; /*sys/class/camera*/
struct device *flash_dev;
static char *s2mu106_fled_mode_string[] = {
"OFF",
"TORCH",
"FLASH",
};
static char *s2mu106_fled_operating_mode_string[] = {
"AUTO",
"BOOST",
"TA",
"SYS",
};
/*Channel values range fron 1 to 3 so 0 value is never obtained check function s2mu106_fled_set_torch_curr*/
static int s2mu106_fled_torch_curr_max[] = {
-1, 320, 320, 320
};
/*Channel values range fron 1 to 3 so 0 value is never obtained check function s2mu106_fled_set_flash_curr*/
static int s2mu106_fled_flash_curr_max[] = {
-1, 1600, 1600, 500
};
/*Reads the registers on the S2MU106 chip. Check output to see if correct current, mode values have been set or not*/
static void s2mu106_fled_test_read(struct s2mu106_fled_data *fled)
{
u8 data;
char str[1016] = {0,};
int i;
struct i2c_client *i2c = fled->i2c;
for (i = 0x0B; i <= 0x0C; i++) {
s2mu106_read_reg(i2c, i, &data);
sprintf(str+strlen(str), "0x%02x:0x%02x, ", i, data);
}
for (i = 0x14; i <= 0x15; i++) {
s2mu106_read_reg(i2c, i, &data);
sprintf(str+strlen(str), "0x%02x:0x%02x, ", i, data);
}
for (i = 0x53; i <= 0x5A; i++) {
s2mu106_read_reg(i2c, i, &data);
sprintf(str+strlen(str), "0x%02x:0x%02x, ", i, data);
}
s2mu106_read_reg(i2c, 0x5B, &data);
pr_err("%s: %s0x5B:0x%02x\n", __func__, str, data);
memset(str,0,strlen(str));
for (i = 0x5C; i <= 0x62; i++) {
s2mu106_read_reg(i2c, i, &data);
sprintf(str+strlen(str), "0x%02x:0x%02x, ", i, data);
}
s2mu106_read_reg(i2c, 0x63, &data);
sprintf(str+strlen(str), "0x63:0x%02x, ", data);
s2mu106_read_reg(i2c, 0x66, &data);
sprintf(str+strlen(str), "0x66:0x%02x, ", data);
s2mu106_read_reg(i2c, 0x67, &data);
pr_err("%s: %s0x67:0x%02x\n", __func__, str, data);
}
static int s2mu106_fled_get_flash_curr(struct s2mu106_fled_data *fled, int chan)
{
int curr = -1;
u8 data;
u8 dest;
if ((chan < 1) || (chan > S2MU106_CH_MAX)) {
pr_info("%s: Wrong channel!!\n", __func__);
return -1;
}
switch(chan) {
case 1:
dest = S2MU106_FLED_CH1_CTRL0;
break;
case 2:
dest = S2MU106_FLED_CH2_CTRL0;
break;
case 3:
dest = S2MU106_FLED_CH3_CTRL0;
break;
default:
return curr;
break;
}
s2mu106_read_reg(fled->i2c, dest, &data);
data = data & S2MU106_CHX_FLASH_IOUT;
curr = (data * 50) + 50;
pr_info("%s: CH%02d flash curr. = %dmA\n", __func__,
chan, curr);
return curr;
}
static int s2mu106_fled_set_flash_curr(struct s2mu106_fled_data *fled,
int chan, int curr)
{
int ret = -1;
u8 data;
u8 dest;
int curr_set;
if ((chan < 1) || (chan > S2MU106_CH_MAX)) {
pr_info("%s: Wrong channel!!\n", __func__);
return -1;
}
switch(chan) {
case 1:
dest = S2MU106_FLED_CH1_CTRL0;
break;
case 2:
dest = S2MU106_FLED_CH2_CTRL0;
break;
case 3:
dest = S2MU106_FLED_CH3_CTRL0;
break;
default:
return ret;
break;
}
if (curr < 50)
curr = 50;
else if (curr > s2mu106_fled_flash_curr_max[chan])
curr = s2mu106_fled_flash_curr_max[chan];
data = (curr - 50)/50;
s2mu106_update_reg(fled->i2c, dest, data, S2MU106_CHX_FLASH_IOUT);
curr_set = s2mu106_fled_get_flash_curr(fled, chan);
pr_info("%s: curr: %d, curr_set: %d\n", __func__,
curr, curr_set);
return ret;
}
static int s2mu106_fled_get_torch_curr(struct s2mu106_fled_data *fled,
int chan)
{
int curr = -1;
u8 data;
u8 dest;
if ((chan < 1) || (chan > S2MU106_CH_MAX)) {
pr_info("%s: Wrong channel!!\n", __func__);
return -1;
}
switch(chan) {
case 1:
dest = S2MU106_FLED_CH1_CTRL1;
break;
case 2:
dest = S2MU106_FLED_CH2_CTRL1;
break;
case 3:
dest = S2MU106_FLED_CH3_CTRL1;
break;
default:
return curr;
break;
}
s2mu106_read_reg(fled->i2c, dest, &data);
data = data & S2MU106_CHX_TORCH_IOUT;
curr = data * 10 + 10;
pr_info("%s: CH%02d torch curr. = %dmA\n", __func__,
chan, curr);
return curr;
}
static int s2mu106_fled_set_torch_curr(struct s2mu106_fled_data *fled,
int chan, int curr)
{
int ret = -1;
u8 data;
u8 dest;
int curr_set;
if ((chan < 1) || (chan > S2MU106_CH_MAX)) {
pr_info("%s: Wrong channel!!\n", __func__);
return -1;
}
switch(chan) {
case 1:
dest = S2MU106_FLED_CH1_CTRL1;
break;
case 2:
dest = S2MU106_FLED_CH2_CTRL1;
break;
case 3:
dest = S2MU106_FLED_CH3_CTRL1;
break;
default:
return ret;
break;
}
if (curr < 10)
curr = 10;
else if (curr > s2mu106_fled_torch_curr_max[chan])
curr = s2mu106_fled_torch_curr_max[chan];
data = (curr - 10)/10;
s2mu106_update_reg(fled->i2c, dest, data, S2MU106_CHX_TORCH_IOUT);
curr_set = s2mu106_fled_get_torch_curr(fled, chan);
pr_info("%s: curr: %d, curr_set: %d\n", __func__,
curr, curr_set);
ret = 0;
return ret;
}
static void s2mu106_fled_operating_mode(struct s2mu106_fled_data *fled, int mode)
{
u8 value;
if (fled->set_on_factory) {
pr_info("%s Factory Status, Return\n", __func__);
return;
}
if (mode < 0 || mode > 3) {
pr_info ("%s, wrong mode\n", __func__);
mode = AUTO_MODE;
}
pr_info ("%s = %s\n", __func__, s2mu106_fled_operating_mode_string[mode]);
value = mode << 6;
s2mu106_update_reg(fled->i2c, S2MU106_FLED_CTRL0, value, 0xC0);
}
static int s2mu106_fled_get_mode(struct s2mu106_fled_data *fled, int chan)
{
u8 status;
int ret = -1;
s2mu106_read_reg(fled->i2c, S2MU106_FLED_STATUS1, &status);
pr_info("%s: S2MU106_FLED_STATUS1: 0x%02x\n", __func__, status);
if ((chan < 1) || (chan > S2MU106_CH_MAX)) {
pr_info("%s: Wrong channel!!\n", __func__);
return -1;
}
switch(chan) {
case 1:
if (status & S2MU106_CH1_FLASH_ON)
ret = S2MU106_FLED_MODE_FLASH;
else if (status & S2MU106_CH1_TORCH_ON)
ret = S2MU106_FLED_MODE_TORCH;
else
ret = S2MU106_FLED_MODE_OFF;
break;
case 2:
if (status & S2MU106_CH2_FLASH_ON)
ret = S2MU106_FLED_MODE_FLASH;
else if (status & S2MU106_CH2_TORCH_ON)
ret = S2MU106_FLED_MODE_TORCH;
else
ret = S2MU106_FLED_MODE_OFF;
break;
case 3:
if (status & S2MU106_CH3_FLASH_ON)
ret = S2MU106_FLED_MODE_FLASH;
else if (status & S2MU106_CH3_TORCH_ON)
ret = S2MU106_FLED_MODE_TORCH;
else
ret = S2MU106_FLED_MODE_OFF;
break;
default:
break;
}
return ret;
}
static int s2mu106_fled_set_mode(struct s2mu106_fled_data *fled,
int chan, int mode)
{
u8 dest = 0, bit = 0, mask = 0, status = 0;
if ((chan <= 0) || (chan > S2MU106_CH_MAX) ||
(mode < 0) || (mode > S2MU106_FLED_MODE_MAX)) {
pr_err("%s: Wrong channel or mode.\n", __func__);
return -EFAULT;
}
pr_err("%s: channel: %d, mode: %d\n", __func__, chan, mode);
/* 0b000: OFF, 0b101: i2c bit control(on) */
switch(mode) {
case S2MU106_FLED_MODE_OFF:
mask = S2MU106_CHX_FLASH_FLED_EN |
S2MU106_CHX_TORCH_FLED_EN;
bit = 0;
break;
case S2MU106_FLED_MODE_FLASH:
mask = S2MU106_CHX_FLASH_FLED_EN;
if (fled->control_mode == CONTROL_I2C)
bit = S2MU106_FLED_EN << 3;
else
bit = S2MU106_FLED_GPIO_EN1 << 3;
break;
case S2MU106_FLED_MODE_TORCH:
s2mu106_fled_operating_mode(fled, SYS_MODE); /*Torch should operate in SYS mode*/
mask = S2MU106_CHX_TORCH_FLED_EN;
if (fled->control_mode == CONTROL_I2C)
bit = S2MU106_FLED_EN;
else
bit = S2MU106_FLED_GPIO_EN2;
break;
default:
return -EFAULT;
break;
}
switch(chan) {
case 1:
dest = S2MU106_FLED_CTRL1;
break;
case 2:
dest = S2MU106_FLED_CTRL2;
break;
case 3:
dest = S2MU106_FLED_CTRL3;
break;
default:
return -EFAULT;
break;
}
/* Need to set EN_FLED_PRE bit before mode change */
if (mode != S2MU106_FLED_MODE_OFF)
s2mu106_update_reg(fled->i2c, S2MU106_FLED_CTRL0,
S2MU106_EN_FLED_PRE, S2MU106_EN_FLED_PRE);
else {
/* If no LED is on, clear EN_FLED_PRE */
s2mu106_read_reg(fled->i2c, S2MU106_FLED_STATUS1, &status);
if (!(status & S2MU106_FLED_ON_CHECK))
s2mu106_update_reg(fled->i2c, S2MU106_FLED_CTRL0,
0, S2MU106_EN_FLED_PRE);
}
s2mu106_update_reg(fled->i2c, dest, bit, mask);
if (mode == S2MU106_FLED_MODE_OFF)
s2mu106_fled_operating_mode(fled, AUTO_MODE);
return 0;
}
int s2mu106_led_mode_ctrl(int state)
{
int ret = 0;
struct s2mu106_fled_data *fled = g_fled_data;
union power_supply_propval value;
int gpio_torch = fled->torch_gpio;
int gpio_flash = fled->flash_gpio;
pr_info("%s : state = %d\n", __func__, state);
ret = gpio_request(gpio_torch, "s2mu106_gpio_torch");
if(ret < 0)
pr_err("%s Torch GPIO pin request fail\n", __func__);
ret = gpio_request(gpio_flash, "s2mu106_gpio_flash");
if(ret < 0)
pr_err("%s Flash GPIO pin request fail\n", __func__);
switch(state) {
case S2MU106_FLED_MODE_OFF:
gpio_direction_output(gpio_torch, 0);
gpio_direction_output(gpio_flash, 0);
if(s2mu106_fled_get_torch_curr(fled, 1) != fled->preflash_current/10)
s2mu106_fled_set_torch_curr(fled, 1, fled->preflash_current);
if (fled->is_en_flash) {
if (!fled->psy_chg)
fled->psy_chg = power_supply_get_by_name("s2mu106-charger");
fled->is_en_flash = (value.intval = false);
power_supply_set_property(fled->psy_chg,
POWER_SUPPLY_PROP_ENERGY_AVG, &value);
}
s2mu106_fled_operating_mode(fled, SYS_MODE);
break;
case S2MU106_FLED_MODE_TORCH:
/* change to SYS MODE when turning on torch */
if((s2mu106_fled_get_torch_curr(fled, 1)/10) != fled->preflash_current/10)
s2mu106_fled_set_torch_curr(fled, 1, fled->preflash_current);
s2mu106_fled_operating_mode(fled, SYS_MODE);
gpio_direction_output(gpio_torch, 1);
break;
case S2MU106_FLED_MODE_FLASH:
if (!fled->psy_chg)
fled->psy_chg = power_supply_get_by_name("s2mu106-charger");
fled->is_en_flash = (value.intval = true);
power_supply_set_property(fled->psy_chg,
POWER_SUPPLY_PROP_ENERGY_AVG, &value);
s2mu106_fled_operating_mode(fled, AUTO_MODE);
gpio_direction_output(gpio_flash, 1);
break;
case S2MU106_FLED_MODE_MOVIE:
s2mu106_fled_operating_mode(fled, SYS_MODE);
s2mu106_fled_set_torch_curr(fled, 1, fled->movie_current);
gpio_direction_output(gpio_torch, 1);
break;
case S2MU106_FLED_MODE_FACTORY:
/* change SYS MODE when turn on torch */
s2mu106_fled_operating_mode(fled, SYS_MODE);
gpio_direction_output(gpio_torch, 1);
break;
default:
break;
}
gpio_free(gpio_torch);
gpio_free(gpio_flash);
return 0;
}
int s2mu106_mode_change_cam_to_leds(enum cam_flash_mode cam_mode)
{
int mode = -1;
switch(cam_mode) {
case CAM_FLASH_MODE_OFF:
mode = S2MU106_FLED_MODE_OFF;
break;
case CAM_FLASH_MODE_SINGLE:
mode = S2MU106_FLED_MODE_FLASH;
break;
case CAM_FLASH_MODE_TORCH:
mode = S2MU106_FLED_MODE_TORCH;
break;
default:
mode = S2MU106_FLED_MODE_OFF;
break;
}
return mode;
}
int s2mu106_fled_set_mode_ctrl(int chan, enum cam_flash_mode cam_mode)
{
struct s2mu106_fled_data *fled = g_fled_data;
int mode = -1;
mode = s2mu106_mode_change_cam_to_leds(cam_mode);
if ((chan <= 0) || (chan > S2MU106_CH_MAX) ||
(mode < 0) || (mode >= S2MU106_FLED_MODE_MAX)) {
pr_err("%s: channel: %d, mode: %d\n", __func__, chan, mode);
pr_err("%s: Wrong channel or mode.\n", __func__);
return -1;
}
s2mu106_fled_set_mode(fled, chan, mode);
s2mu106_fled_test_read(fled);
return 0;
}
int s2mu106_fled_set_curr(int chan, enum cam_flash_mode cam_mode, int curr)
{
struct s2mu106_fled_data *fled = g_fled_data;
int mode = -1;
mode = s2mu106_mode_change_cam_to_leds(cam_mode);
/* Check channel */
if ((chan <= 0) || (chan > S2MU106_CH_MAX)) {
pr_err("%s: Wrong channel.\n", __func__);
return -EFAULT;
}
switch (mode){
case S2MU106_FLED_MODE_TORCH:
/* Set curr. */
s2mu106_fled_set_torch_curr(fled, chan, curr);
break;
case S2MU106_FLED_MODE_FLASH:
/* Set curr. */
s2mu106_fled_set_flash_curr(fled, chan, curr);
break;
default:
return -1;
}
/* Test read */
s2mu106_fled_test_read(fled);
return 0;
}
int s2mu106_fled_get_curr(int chan, enum cam_flash_mode cam_mode)
{
struct s2mu106_fled_data *fled = g_fled_data;
int mode = -1;
int curr = 0;
mode = s2mu106_mode_change_cam_to_leds(cam_mode);
/* Check channel */
if ((chan <= 0) || (chan > S2MU106_CH_MAX)) {
pr_err("%s: Wrong channel.\n", __func__);
return -EFAULT;
}
switch (mode) {
case S2MU106_FLED_MODE_TORCH:
curr = s2mu106_fled_get_torch_curr(fled, chan);
break;
case S2MU106_FLED_MODE_FLASH:
curr = s2mu106_fled_get_flash_curr(fled, chan);
break;
default:
return -1;
}
/* Test read */
s2mu106_fled_test_read(fled);
return curr;
}
static ssize_t fled_flash_curr_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct s2mu106_fled_data *fled =
container_of(led_cdev, struct s2mu106_fled_data, cdev);
int cnt = 0;
int curr = 0;
int i;
char str[1016] = {0,};
/* Read curr. */
for (i = 1; i <= S2MU106_CH_MAX; i++) {
curr = s2mu106_fled_get_flash_curr(fled, i);
pr_info("%s: channel: %d, curr: %dmA\n", __func__, i, curr);
if (curr >= 0)
cnt += sprintf(str+strlen(str), "CH%02d: %dmA, ", i, curr);
}
cnt += sprintf(str+strlen(str), "\n");
strcpy(buf, str);
return cnt;
}
static ssize_t fled_flash_curr_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct s2mu106_fled_data *fled =
container_of(led_cdev, struct s2mu106_fled_data, cdev);
int chan = -1;
int curr = -1;
sscanf(buf, "%d %d", &chan, &curr);
/* Check channel */
if ((chan <= 0) || (chan > S2MU106_CH_MAX)) {
pr_err("%s: Wrong channel.\n", __func__);
return -EFAULT;
}
/* Set curr. */
s2mu106_fled_set_flash_curr(fled, chan, curr);
/* Test read */
s2mu106_fled_test_read(fled);
return size;
}
static ssize_t fled_torch_curr_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct s2mu106_fled_data *fled =
container_of(led_cdev, struct s2mu106_fled_data, cdev);
int cnt = 0;
int curr = 0;
int i;
char str[1016] = {0,};
/* Read curr. */
for (i = 1; i <= S2MU106_CH_MAX; i++) {
curr = s2mu106_fled_get_torch_curr(fled, i);
pr_info("%s: channel: %d, curr: %dmA\n", __func__, i, curr);
if (curr >= 0)
cnt += sprintf(str+strlen(str), "CH%02d: %dmA, ", i, curr);
}
cnt += sprintf(str+strlen(str), "\n");
strcpy(buf, str);
return cnt;
}
static ssize_t fled_torch_curr_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct s2mu106_fled_data *fled =
container_of(led_cdev, struct s2mu106_fled_data, cdev);
int chan = -1;
int curr = -1;
sscanf(buf, "%d %d", &chan, &curr);
/* Check channel */
if ((chan <= 0) || (chan > S2MU106_CH_MAX)) {
pr_err("%s: Wrong channel.\n", __func__);
return -EFAULT;
}
/* Set curr. */
s2mu106_fled_set_torch_curr(fled, chan, curr);
/* Test read */
s2mu106_fled_test_read(fled);
return size;
}
static ssize_t fled_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct s2mu106_fled_data *fled =
container_of(led_cdev, struct s2mu106_fled_data, cdev);
int cnt = 0;
int mode = 0;
int i;
char str[1016] = {0,};
s2mu106_fled_test_read(fled);
for (i = 1; i <= S2MU106_CH_MAX; i++) {
mode = s2mu106_fled_get_mode(fled, i);
if (mode >= 0)
cnt += sprintf(str+strlen(str), "CH%02d: %s, ", i,
s2mu106_fled_mode_string[mode]);
}
cnt += sprintf(str+strlen(str), "\n");
strcpy(buf, str);
return cnt;
}
static ssize_t fled_mode_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct s2mu106_fled_data *fled =
container_of(led_cdev, struct s2mu106_fled_data, cdev);
int chan = -1;
int mode = -1;
sscanf(buf, "%d %d", &chan, &mode);
if ((chan <= 0) || (chan > S2MU106_CH_MAX) ||
(mode < 0) || (mode >= S2MU106_FLED_MODE_MAX)) {
pr_err("%s: channel: %d, mode: %d\n", __func__, chan, mode);
pr_err("%s: Wrong channel or mode.\n", __func__);
return -EFAULT;
}
if (fled->control_mode == CONTROL_I2C)
s2mu106_fled_set_mode(fled, chan, mode);
else {
if (mode == 1)
s2mu106_led_mode_ctrl(S2MU106_FLED_MODE_TORCH);
else if (mode == 2)
s2mu106_led_mode_ctrl(S2MU106_FLED_MODE_FLASH);
else
s2mu106_led_mode_ctrl(S2MU106_FLED_MODE_OFF);
}
s2mu106_fled_test_read(fled);
return size;
}
static DEVICE_ATTR(fled_mode, 0644, fled_mode_show, fled_mode_store);
static DEVICE_ATTR(fled_flash_curr, 0644, fled_flash_curr_show, fled_flash_curr_store);
static DEVICE_ATTR(fled_torch_curr, 0644, fled_torch_curr_show, fled_torch_curr_store);
static struct attribute *s2mu106_fled_attrs[] = {
&dev_attr_fled_mode.attr,
&dev_attr_fled_flash_curr.attr,
&dev_attr_fled_torch_curr.attr,
NULL
};
ATTRIBUTE_GROUPS(s2mu106_fled);
void s2mu106_fled_set_operation_mode(int mode)
{
if(mode) {
s2mu106_fled_operating_mode(g_fled_data, TA_MODE);
g_fled_data->set_on_factory = 1;
pr_info("%s: TA only mode set\n", __func__);
}
else {
g_fled_data->set_on_factory = 0;
s2mu106_fled_operating_mode(g_fled_data, AUTO_MODE);
pr_info("%s: Auto control mode set\n", __func__);
}
}
static void s2mu106_fled_init(struct s2mu106_fled_data *fled)
{
int i;
pr_info("%s: s2mu106_fled init start\n", __func__);
fled->is_en_flash = false;
if (gpio_is_valid(fled->pdata->flash_gpio) &&
gpio_is_valid(fled->pdata->torch_gpio)) {
pr_info("%s: s2mu106_fled gpio mode\n", __func__);
fled->control_mode = CONTROL_GPIO;
gpio_request_one(fled->flash_gpio, GPIOF_OUT_INIT_LOW, "LED_GPIO_OUTPUT_LOW");
gpio_request_one(fled->torch_gpio, GPIOF_OUT_INIT_LOW, "LED_GPIO_OUTPUT_LOW");
gpio_free(fled->flash_gpio);
gpio_free(fled->torch_gpio);
/* CAM_FLASH_EN -> FLASH gpio mode */
s2mu106_fled_set_mode(fled, 1, S2MU106_FLED_MODE_FLASH);
/* CAM_TORCH_EN -> TORCH gpio mode */
s2mu106_fled_set_mode(fled, 1, S2MU106_FLED_MODE_TORCH);
s2mu106_led_mode_ctrl(S2MU106_FLED_MODE_OFF);
} else {
fled->control_mode = CONTROL_I2C;
}
/* FLED driver operating mode set, TA only mode*/
fled->set_on_factory = 0;
#if !defined(CONFIG_SEC_FACTORY)
if(factory_mode) {
s2mu106_fled_operating_mode(fled, TA_MODE);
fled->set_on_factory = 1;
}
#endif
/* for Flash Auto boost */
s2mu106_update_reg(fled->i2c, S2MU106_FLED_TEST3, 0x20, 0x20);
s2mu106_update_reg(fled->i2c, S2MU106_FLED_TEST4, 0x40, 0x40);
for (i = 1; i <= S2MU106_CH_MAX; i++) {
s2mu106_fled_set_flash_curr(fled, i, fled->default_current);
s2mu106_fled_set_torch_curr(fled, i, fled->default_current);
}
/* flash current set */
s2mu106_fled_set_flash_curr(fled, 1, fled->flash_current);
/* torch current set */
s2mu106_fled_set_torch_curr(fled, 1, fled->preflash_current);
/* w/a: prevent SMPL event in case of flash operation */
s2mu106_update_reg(fled->i2c, 0x21, 0x4, 0x7);
s2mu106_update_reg(fled->i2c, 0x89, 0x0, 0x3);
fled->psy_chg = power_supply_get_by_name("s2mu106-charger");
s2mu106_fled_test_read(fled);
}
#if defined(CONFIG_OF)
static int s2mu106_led_dt_parse_pdata(struct device *dev,
struct s2mu106_fled_platform_data *pdata)
{
struct device_node *led_np, *np, *c_np;
int ret;
u32 temp;
u32 index;
led_np = dev->parent->of_node;
if (!led_np) {
pr_err("<%s> could not find led sub-node led_np\n", __func__);
return -ENODEV;
}
np = of_find_node_by_name(led_np, "flash_led");
if (!np) {
pr_err("%s : could not find led sub-node np\n", __func__);
return -EINVAL;
}
ret = of_property_read_u32(np, "default_current",
&pdata->default_current);
if (ret < 0)
pr_err("%s : could not find default_current\n", __func__);
ret = of_property_read_u32(np, "max_current",
&pdata->max_current);
if (ret < 0)
pr_err("%s : could not find max_current\n", __func__);
ret = of_property_read_u32(np, "default_timer",
&pdata->default_timer);
if (ret < 0)
pr_err("%s : could not find default_timer\n", __func__);
ret = pdata->flash_gpio = of_get_named_gpio(np, "flash-gpio", 0);
if (ret < 0) {
pr_err("%s : can't get flash-gpio\n", __func__);
return ret;
}
ret = pdata->torch_gpio = of_get_named_gpio(np, "torch-gpio", 0);
if (ret < 0) {
pr_err("%s : can't get torch-gpio\n", __func__);
return ret;
}
ret = of_property_read_u32(np, "flash_current",
&pdata->flash_current);
if (ret < 0)
pr_err("%s : could not find flash_current\n", __func__);
ret = of_property_read_u32(np, "preflash_current",
&pdata->preflash_current);
if (ret < 0)
pr_err("%s : could not find flash_current\n", __func__);
ret = of_property_read_u32(np, "torch_current",
&pdata->torch_current);
if (ret < 0)
pr_err("%s : could not find torch_current\n", __func__);
ret = of_property_read_u32(np, "movie_current",
&pdata->movie_current);
if (ret < 0)
pr_err("%s : could not find movie_current\n", __func__);
ret = of_property_read_u32(np, "factory_current",
&pdata->factory_current);
if (ret < 0)
pr_err("%s : could not find factory_current\n", __func__);
ret = of_property_read_u32_array(np, "flashlight_current",
pdata->flashlight_current, S2MU106_FLASH_LIGHT_MAX);
if (ret < 0) {
pr_err("%s : could not find flashlight_current\n", __func__);
//default setting
pdata->flashlight_current[0] = 45;
pdata->flashlight_current[1] = 75;
pdata->flashlight_current[2] = 125;
pdata->flashlight_current[3] = 195;
pdata->flashlight_current[4] = 270;
}
pdata->chan_num = of_get_child_count(np);
if (pdata->chan_num > S2MU106_CH_MAX)
pdata->chan_num = S2MU106_CH_MAX;
pdata->channel = devm_kzalloc(dev,
sizeof(struct s2mu106_fled_chan) * pdata->chan_num, GFP_KERNEL);
for_each_child_of_node(np, c_np) {
ret = of_property_read_u32(c_np, "id", &temp);
if (ret < 0)
goto dt_err;
index = temp;
pr_info("%s: temp = %d, index = %d\n", __func__, temp, index);
if (index < S2MU106_CH_MAX) {
pdata->channel[index].id = index;
ret = of_property_read_u32_index(np, "current", index,
&pdata->channel[index].curr);
if (ret < 0) {
pr_err("%s : could not find current for channel%d\n",
__func__, pdata->channel[index].id);
pdata->channel[index].curr = pdata->default_current;
}
ret = of_property_read_u32_index(np, "timer", index,
&pdata->channel[index].timer);
if (ret < 0) {
pr_err("%s : could not find timer for channel%d\n",
__func__, pdata->channel[index].id);
pdata->channel[index].timer = pdata->default_timer;
}
}
}
pr_info("%s: DT parsing finished \n", __func__);
return 0;
dt_err:
pr_err("%s: DT parsing finish. ret = %d\n", __func__, ret);
return ret;
}
#endif /* CONFIG_OF */
/*Handles sysfs entries*/
static ssize_t rear_flash_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
int mode = -1;
int value = 0;
int flash_current = 0;
int torch_current = 0;
pr_info("%s: rear_flash_store start\n", __func__);
if ((buf == NULL) || kstrtouint(buf, 10, &value)) {
return -1;
}
if ((value < 0)) {
pr_err("%s: value: %d\n", __func__, value);
pr_err("%s: Wrong mode.\n", __func__);
return -EFAULT;
}
pr_info("%s: %d: rear_flash_store:\n", __func__,value );
g_fled_data->sysfs_input_data = value;
flash_current = g_fled_data->flash_current;
torch_current = g_fled_data->torch_current;
if (value <= 0) {
mode = S2MU106_FLED_MODE_OFF;
} else if (value == 1) {
mode = S2MU106_FLED_MODE_TORCH;
} else if (value == 100) {
/* Factory Torch*/
pr_info("%s: factory torch current [%d]\n", __func__, g_fled_data->factory_current);
torch_current = g_fled_data->factory_current;
mode = S2MU106_FLED_MODE_TORCH;
} else if (value == 200) {
/* Factory Flash */
pr_info("%s: factory flash current [%d]\n", __func__, g_fled_data->factory_current);
flash_current = g_fled_data->factory_current;
mode = S2MU106_FLED_MODE_FLASH;
} else if (value <= 1010 && value >= 1001) {
mode = S2MU106_FLED_MODE_TORCH;
/* (value) 1001, 1002, 1004, 1006, 1009 */
if (value <= 1001)
torch_current = g_fled_data->flashlight_current[0];
else if (value <= 1002)
torch_current = g_fled_data->flashlight_current[1];
else if (value <= 1004)
torch_current = g_fled_data->flashlight_current[2];
else if (value <= 1006)
torch_current = g_fled_data->flashlight_current[3];
else if (value <= 1009)
torch_current = g_fled_data->flashlight_current[4];
else
torch_current = g_fled_data->torch_current;
g_fled_data->sysfs_input_data = 1;
} else if (value == 2) {
mode = S2MU106_FLED_MODE_FLASH;
}
pr_info("%s: Torch current = %d ; Flash current = %d \n", __func__, torch_current, flash_current );
mutex_lock(&g_fled_data->lock);
if (g_fled_data->control_mode == CONTROL_I2C) {
s2mu106_fled_set_mode(g_fled_data, 1, mode);
} else {
if (mode == S2MU106_FLED_MODE_TORCH) {
pr_info("%s: %d: S2MU106_FLED_MODE_FACTORY - %dmA\n", __func__, value, torch_current );
/* torch current set */
s2mu106_fled_set_torch_curr(g_fled_data, 1, torch_current);
s2mu106_led_mode_ctrl(S2MU106_FLED_MODE_FACTORY);
} else if (mode == S2MU106_FLED_MODE_FLASH) {
pr_info("%s: %d: S2MU106_FLED_MODE_FLASH - %dmA\n", __func__, value, flash_current );
/* flash current set */
s2mu106_fled_set_flash_curr(g_fled_data, 1, flash_current);
s2mu106_led_mode_ctrl(S2MU106_FLED_MODE_FLASH);
} else {
pr_info("%s: %d: S2MU106_FLED_MODE_OFF\n", __func__,value );
/* flash, torch current set for initial current */
flash_current = g_fled_data->flash_current;
torch_current = g_fled_data->preflash_current;
/* flash current set */
s2mu106_fled_set_flash_curr(g_fled_data, 1, flash_current);
/* torch current set */
s2mu106_fled_set_torch_curr(g_fled_data, 1, torch_current);
s2mu106_led_mode_ctrl(S2MU106_FLED_MODE_OFF);
}
}
mutex_unlock(&g_fled_data->lock);
s2mu106_fled_test_read(g_fled_data);
pr_info("%s: rear_flash_store END\n", __func__);
return size;
}
static ssize_t rear_flash_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", g_fled_data->sysfs_input_data);
}
static DEVICE_ATTR(rear_flash, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH,
rear_flash_show, rear_flash_store);
static DEVICE_ATTR(rear_torch_flash, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH,
rear_flash_show, rear_flash_store);
int create_flash_sysfs(void)
{
int err = -ENODEV;
if (IS_ERR_OR_NULL(camera_class)) {
pr_err("flash_sysfs: error, camera class not exist");
return -ENODEV;
}
flash_dev = device_create(camera_class, NULL, 0, NULL, "flash");
if (IS_ERR(flash_dev)) {
pr_err("flash_sysfs: failed to create device(flash)\n");
return -ENODEV;
}
err = device_create_file(flash_dev, &dev_attr_rear_flash);
if (unlikely(err < 0)) {
pr_err("flash_sysfs: failed to create device file, %s\n",
dev_attr_rear_flash.attr.name);
}
err = device_create_file(flash_dev, &dev_attr_rear_torch_flash);
if (unlikely(err < 0)) {
pr_err("flash_sysfs: failed to create device file, %s\n",
dev_attr_rear_torch_flash.attr.name);
}
return 0;
}
static int s2mu106_led_probe(struct platform_device *pdev)
{
int ret = 0;
int cnt = 0;
struct s2mu106_dev *s2mu106 = dev_get_drvdata(pdev->dev.parent);
struct s2mu106_fled_data *fled_data;
char name[20];
pr_info("%s: s2mu106_fled start\n", __func__);
if (!s2mu106) {
dev_err(&pdev->dev, "drvdata->dev.parent not supplied\n");
return -ENODEV;
}
fled_data = devm_kzalloc(&pdev->dev,
sizeof(struct s2mu106_fled_data), GFP_KERNEL);
if (!fled_data) {
pr_err("%s: failed to allocate driver data\n", __func__);
return -ENOMEM;
}
fled_data->dev = &pdev->dev;
fled_data->i2c = s2mu106->i2c;
fled_data->pdata = devm_kzalloc(&pdev->dev,
sizeof(*(fled_data->pdata)), GFP_KERNEL);
if (!fled_data->pdata) {
pr_err("%s: failed to allocate platform data\n", __func__);
return -ENOMEM;
}
if (s2mu106->dev->of_node) {
ret = s2mu106_led_dt_parse_pdata(&pdev->dev, fled_data->pdata);
if (ret < 0) {
pr_err("%s: not found leds dt! ret=%d\n",
__func__, ret);
return -1;
}
}
platform_set_drvdata(pdev, fled_data);
/* Store fled_data for EXPORT_SYMBOL */
g_fled_data = fled_data;
snprintf(name, sizeof(name), "fled-s2mu106");
fled_data->cdev.name = name;
fled_data->cdev.groups = s2mu106_fled_groups;
ret = devm_led_classdev_register(&pdev->dev, &fled_data->cdev);
if (ret < 0) {
pr_err("%s: unable to register LED class dev\n", __func__);
return ret;
}
g_fled_data->flash_gpio = fled_data->pdata->flash_gpio;
g_fled_data->torch_gpio = fled_data->pdata->torch_gpio;
g_fled_data->default_current = fled_data->pdata->default_current;
g_fled_data->flash_current = fled_data->pdata->flash_current;
g_fled_data->torch_current = fled_data->pdata->torch_current;
g_fled_data->preflash_current = fled_data->pdata->preflash_current;
g_fled_data->movie_current = fled_data->pdata->movie_current;
g_fled_data->factory_current = fled_data->pdata->factory_current;
for (cnt = 0; cnt < S2MU106_FLASH_LIGHT_MAX; cnt++) {
g_fled_data->flashlight_current[cnt] = fled_data->pdata->flashlight_current[cnt];
}
s2mu106_fled_init(g_fled_data);
mutex_init(&fled_data->lock);
//create sysfs for camera.
create_flash_sysfs();
pr_info("%s: s2mu106_fled loaded\n", __func__);
return 0;
}
static int s2mu106_led_remove(struct platform_device *pdev)
{
device_remove_file(flash_dev, &dev_attr_rear_flash);
device_remove_file(flash_dev, &dev_attr_rear_torch_flash);
device_destroy(camera_class, 0);
class_destroy(camera_class);
mutex_destroy(&g_fled_data->lock);
return 0;
}
static const struct platform_device_id s2mu106_leds_id[] = {
{"leds-s2mu106", 0},
{},
};
static struct platform_driver s2mu106_led_driver = {
.driver = {
.name = "leds-s2mu106",
.owner = THIS_MODULE,
},
.probe = s2mu106_led_probe,
.remove = s2mu106_led_remove,
.id_table = s2mu106_leds_id,
};
static int __init s2mu106_led_driver_init(void)
{
return platform_driver_register(&s2mu106_led_driver);
}
module_init(s2mu106_led_driver_init);
static void __exit s2mu106_led_driver_exit(void)
{
platform_driver_unregister(&s2mu106_led_driver);
}
module_exit(s2mu106_led_driver_exit);
MODULE_AUTHOR("Keunho Hwang <keunho.hwang@samsung.com>");
MODULE_DESCRIPTION("SAMSUNG s2mu106 flash LED Driver");
MODULE_LICENSE("GPL");
Reference in New Issue View Git Blame Copy Permalink