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kernel_samsung_sm7125/drivers/leds/leds-s2mu107.c

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/*
* leds-s2mu107.c - LED class driver for S2MU107 FLASH LEDs.
*
* Copyright (C) 2019 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/mfd/samsung/s2mu107.h>
#include <linux/leds-s2mu107.h>
#include <linux/platform_device.h>
#include <linux/sec_batt.h>
#define CONTROL_I2C 0
#define CONTROL_GPIO 1
static struct s2mu107_fled_data *g_fled_data = NULL;
extern struct class *camera_class;
static struct device *flash_dev;
extern struct device *cam_dev_flash;
static char *s2mu107_fled_mode_string[] = {
"OFF",
"TORCH",
"FLASH",
};
static char *s2mu107_fled_operating_mode_string[] = {
"AUTO",
"BOOST",
"TA",
"SYS",
};
/*
* Channel values range fron 1 to 3 so 0 value is never obtained
* check function s2mu107_fled_set_torch_curr
*/
static int s2mu107_fled_torch_curr_max[] = {
-1, 320
};
/*
* Channel values range fron 1 to 3 so 0 value is never obtained
* check function s2mu107_fled_set_flash_curr
*/
static int s2mu107_fled_flash_curr_max[] = {
-1, 1500
};
static void s2mu107_fled_test_read(struct s2mu107_fled_data *fled)
{
static u8 reg_list[] = {
0x0A, 0x0B, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F
};
u8 data = 0;
char str[1016] = {0,};
int i = 0, reg_list_size = 0;
reg_list_size = ARRAY_SIZE(reg_list);
for (i = 0; i < reg_list_size; i++) {
s2mu107_read_reg(fled->i2c, reg_list[i], &data);
sprintf(str + strlen(str),
"0x%02x:0x%02x, ", reg_list[i], data);
}
/* print buffer */
pr_info("[FLED]%s: %s\n", __func__, str);
}
static int s2mu107_fled_get_flash_curr(struct s2mu107_fled_data *fled, int chan)
{
int curr = -1;
u8 data, dest;
if ((chan < 1) || (chan > S2MU107_CH_MAX)) {
pr_info("%s: Wrong channel!!\n", __func__);
return -1;
}
switch (chan) {
case 1:
dest = S2MU107_FLED_CH1_CTRL0;
break;
default:
pr_info("%s: CH%02d does not exist!!\n", __func__, chan);
return curr;
}
s2mu107_read_reg(fled->i2c, dest, &data);
data = data & S2MU107_CHX_FLASH_IOUT;
curr = (data * 50) + 50;
pr_info("%s: CH%02d flash curr. = %dmA\n", __func__,
chan, curr);
return curr;
}
static int s2mu107_fled_set_flash_curr(struct s2mu107_fled_data *fled,
int chan, int curr)
{
int ret = -1, curr_set;
u8 data, dest;
if ((chan < 1) || (chan > S2MU107_CH_MAX)) {
pr_info("%s: Wrong channel!!\n", __func__);
return -1;
}
switch (chan) {
case 1:
dest = S2MU107_FLED_CH1_CTRL0;
break;
default:
pr_info("%s: CH%02d does not exist!!\n", __func__, chan);
return ret;
}
if (curr < 50)
curr = 50;
else if (curr > s2mu107_fled_flash_curr_max[chan])
curr = s2mu107_fled_flash_curr_max[chan];
data = (curr - 50) / 50;
s2mu107_update_reg(fled->i2c, dest, data, S2MU107_CHX_FLASH_IOUT);
curr_set = s2mu107_fled_get_flash_curr(fled, chan);
pr_info("%s: curr: %d, curr_set: %d\n", __func__, curr, curr_set);
return ret;
}
static int s2mu107_fled_get_torch_curr(struct s2mu107_fled_data *fled, int chan)
{
int curr = -1;
u8 data, dest;
if ((chan < 1) || (chan > S2MU107_CH_MAX)) {
pr_info("%s: Wrong channel!!\n", __func__);
return -1;
}
switch (chan) {
case 1:
dest = S2MU107_FLED_CH1_CTRL1;
break;
default:
pr_info("%s: CH%02d does not exist!!\n", __func__, chan);
return curr;
}
s2mu107_read_reg(fled->i2c, dest, &data);
data = data & S2MU107_CHX_TORCH_IOUT;
curr = data * 10 + 10;
pr_info("%s: CH%02d torch curr. = %dmA\n", __func__,
chan, curr);
return curr;
}
static int s2mu107_fled_set_torch_curr(struct s2mu107_fled_data *fled,
int chan, int curr)
{
int ret = -1, curr_set;
u8 data, dest;
if ((chan < 1) || (chan > S2MU107_CH_MAX)) {
pr_info("%s: Wrong channel!!\n", __func__);
return -1;
}
switch (chan) {
case 1:
dest = S2MU107_FLED_CH1_CTRL1;
break;
default:
pr_info("%s: CH%02d does not exist!!\n", __func__, chan);
return ret;
}
if (curr < 10)
curr = 10;
else if (curr > s2mu107_fled_torch_curr_max[chan])
curr = s2mu107_fled_torch_curr_max[chan];
data = (curr - 10)/10;
s2mu107_update_reg(fled->i2c, dest, data, S2MU107_CHX_TORCH_IOUT);
curr_set = s2mu107_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 s2mu107_fled_operating_mode(struct s2mu107_fled_data *fled,
int mode)
{
if (fled->set_on_factory) {
pr_info("%s: Factory Status, Return\n", __func__);
return;
}
if (mode < AUTO_MODE || mode > SYS_MODE) {
pr_info ("%s: wrong mode\n", __func__);
mode = AUTO_MODE;
}
pr_info("%s: %s\n", __func__,
s2mu107_fled_operating_mode_string[mode]);
/* set FLED_MODE */
s2mu107_update_reg(fled->i2c, S2MU107_FLED_CTRL0,
mode << S2MU107_FLED_MODE_SHIFT, S2MU107_FLED_MODE);
}
static int s2mu107_fled_get_mode(struct s2mu107_fled_data *fled, int chan)
{
int ret = -1;
u8 status;
s2mu107_read_reg(fled->i2c, S2MU107_FLED_STATUS1, &status);
pr_info("%s: S2MU107_FLED_STATUS1: 0x%02x\n", __func__, status);
if ((chan < 1) || (chan > S2MU107_CH_MAX)) {
pr_info("%s: Wrong channel!!\n", __func__);
return -1;
}
switch (chan) {
case 1:
if (status & S2MU107_CH1_FLASH_ON)
ret = S2MU107_FLED_MODE_FLASH;
else if (status & S2MU107_CH1_TORCH_ON)
ret = S2MU107_FLED_MODE_TORCH;
else
ret = S2MU107_FLED_MODE_OFF;
break;
default:
pr_info("%s: CH%02d does not exist!!\n", __func__, chan);
break;
}
return ret;
}
static void s2mu107_pre_enable(struct s2mu107_fled_data *fled, int mode)
{
u8 status = 0;
switch (mode) {
case S2MU107_FLED_MODE_OFF:
/* If FLED is off, clear EN_FLED_PRE */
s2mu107_read_reg(fled->i2c, S2MU107_FLED_STATUS1, &status);
if (!(status & S2MU107_FLED_ON_CHECK))
s2mu107_update_reg(fled->i2c, S2MU107_FLED_CTRL0,
0, S2MU107_EN_FLED_PRE);
break;
case S2MU107_FLED_MODE_TORCH:
case S2MU107_FLED_MODE_FLASH:
/* Need to set EN_FLED_PRE bit before mode change */
s2mu107_update_reg(fled->i2c, S2MU107_FLED_CTRL0,
S2MU107_EN_FLED_PRE, S2MU107_EN_FLED_PRE);
break;
default:
pr_info("%s: MODE%02d does not exist!!\n", __func__, mode);
break;
}
}
static int s2mu107_fled_set_mode(struct s2mu107_fled_data *fled,
int chan, int mode)
{
u8 dest = 0, bit = 0, mask = 0;
if ((chan <= 0) || (chan > S2MU107_CH_MAX) ||
(mode < S2MU107_FLED_MODE_OFF) || (mode >= S2MU107_FLED_MODE_MAX)) {
pr_err("%s: Wrong channel or mode.\n", __func__);
return -EFAULT;
}
pr_err("%s: CH(%d), mode(%d)\n", __func__, chan, mode);
/* 0b00: OFF, 0b11: i2c bit control(on) */
switch (mode) {
case S2MU107_FLED_MODE_OFF:
mask = (S2MU107_CHX_FLASH_FLED_EN | S2MU107_CHX_TORCH_FLED_EN);
bit = S2MU107_FLED_OFF;
break;
case S2MU107_FLED_MODE_FLASH:
mask = S2MU107_CHX_FLASH_FLED_EN;
if (fled->control_mode == CONTROL_I2C)
bit = (S2MU107_FLED_ON << S2MU107_FLASH_EN_SHIFT);
else
bit = (S2MU107_FLASH_EN_HIGH << S2MU107_FLASH_EN_SHIFT);
break;
case S2MU107_FLED_MODE_TORCH:
s2mu107_fled_operating_mode(fled, SYS_MODE);
mask = S2MU107_CHX_TORCH_FLED_EN;
if (fled->control_mode == CONTROL_I2C)
bit = S2MU107_FLED_ON;
else
bit = S2MU107_TORCH_EN_HIGH;
break;
default:
pr_info("%s: MODE%02d does not exist!!\n", __func__, mode);
return -EFAULT;
}
switch (chan) {
case 1:
dest = S2MU107_FLED_CTRL1;
break;
default:
pr_info("%s: CH%02d does not exist!!\n", __func__, chan);
return -EFAULT;
}
/* set EN_FLED_PRE bit */
s2mu107_pre_enable(fled, mode);
s2mu107_update_reg(fled->i2c, dest, bit, mask);
if (mode == S2MU107_FLED_MODE_OFF)
s2mu107_fled_operating_mode(fled, AUTO_MODE);
return 0;
}
static int ta_notification(struct notifier_block *nb,
unsigned long action, void *data)
{
struct s2mu107_fled_data *fled = container_of(nb,
struct s2mu107_fled_data,
batt_nb);
switch (action) {
case MUIC_NOTIFY_CMD_DETACH:
case MUIC_NOTIFY_CMD_LOGICALLY_DETACH:
fled->attach_ta = 0;
pr_info("%s: FLED detach (attach_ta = %d)\n",
__func__, fled->attach_ta);
break;
case MUIC_NOTIFY_CMD_ATTACH:
case MUIC_NOTIFY_CMD_LOGICALLY_ATTACH:
fled->attach_ta = 1;
pr_info("%s: FLED attach (attach_ta = %d)\n",
__func__, fled->attach_ta);
break;
default:
break;
}
return 0;
}
int s2mu107_fled_show_flash_en(void)
{
return g_fled_data->flash_en;
}
EXPORT_SYMBOL_GPL(s2mu107_fled_show_flash_en);
static void s2mu107_fled_call_sc_set_property(struct s2mu107_fled_data *fled,
int onoff)
{
union power_supply_propval value;
value.intval = 0;
switch (onoff) {
case S2MU107_FLASH_BOOST_ON:
//power_supply_set_property(fled->sc_psy, POWER_SUPPLY_EXT_PROP_FLED_BOOST_ON, &value);
psy_do_property("s2mu107-switching-charger", set,
POWER_SUPPLY_EXT_PROP_FLED_BOOST_ON, value);
break;
case S2MU107_FLASH_BOOST_OFF:
//power_supply_set_property(fled->sc_psy, POWER_SUPPLY_EXT_PROP_FLED_BOOST_OFF, &value);
psy_do_property("s2mu107-switching-charger", set,
POWER_SUPPLY_EXT_PROP_FLED_BOOST_OFF, value);
break;
default:
break;
}
}
int s2mu107_led_mode_ctrl(int state)
{
struct s2mu107_fled_data *fled = g_fled_data;
int gpio_torch = fled->torch_gpio;
int gpio_flash = fled->flash_gpio;
pr_info("%s: state = %d gpio=(%d %d)\n", __func__, state, gpio_torch, gpio_flash);
gpio_request(gpio_torch, "s2mu107_gpio_torch");
gpio_request(gpio_flash, "s2mu107_gpio_flash");
switch (state) {
case S2MU107_FLED_MODE_OFF:
if (fled->torch_en == S2MU107_TORCH_ENABLE) {
gpio_direction_output(gpio_torch, 0);
/* PSK auto on */
s2mu107_update_reg(fled->chg, 0x3C, 0x01, 0x03);
} else
gpio_direction_output(gpio_torch, 0);
if (fled->flash_en == S2MU107_FLASH_ENABLE) {
gpio_direction_output(gpio_flash, 0);
usleep_range(10000, 11000);
s2mu107_fled_call_sc_set_property(fled,
S2MU107_FLASH_BOOST_OFF);
} else
gpio_direction_output(gpio_flash, 0);
fled->flash_en = S2MU107_FLASH_DISABLE;
fled->torch_en = S2MU107_TORCH_DISABLE;
s2mu107_fled_operating_mode(fled, AUTO_MODE);
break;
case S2MU107_FLED_MODE_TORCH:
/* force PSK to stay on */
s2mu107_update_reg(fled->chg, 0x3C, 0x03, 0x03);
/* chgange SYS MODE when turn on torch */
s2mu107_fled_operating_mode(fled, SYS_MODE);
gpio_direction_output(gpio_torch, 1);
fled->torch_en = S2MU107_TORCH_ENABLE;
break;
case S2MU107_FLED_MODE_FLASH:
s2mu107_fled_call_sc_set_property(fled,
S2MU107_FLASH_BOOST_ON);
s2mu107_fled_operating_mode(fled, AUTO_MODE);
/* 0x8C[7:4] set to 1111 */
s2mu107_update_reg(fled->chg, 0x8C, 0xF0, 0xF0);
gpio_direction_output(gpio_flash, 1);
/* 0x8C[7:4] set to 1010 */
s2mu107_update_reg(fled->chg, 0x8C, 0xA0, 0xF0);
fled->flash_en = S2MU107_FLASH_ENABLE;
break;
default:
pr_info("%s: MODE%02d does not exist!!\n", __func__, state);
break;
}
gpio_free(gpio_torch);
gpio_free(gpio_flash);
return 0;
}
int s2mu107_mode_change_cam_to_leds(enum cam_flash_mode cam_mode)
{
int mode = -1;
switch (cam_mode) {
case CAMERA_FLASH_OP_OFF:
mode = S2MU107_FLED_MODE_OFF;
break;
case CAMERA_FLASH_OP_FIREHIGH:
mode = S2MU107_FLED_MODE_FLASH;
break;
case CAMERA_FLASH_OP_FIRELOW:
case CAMERA_FLASH_OP_FIRERECORD:
mode = S2MU107_FLED_MODE_TORCH;
break;
default:
mode = S2MU107_FLED_MODE_OFF;
break;
}
return mode;
}
int s2mu107_fled_set_mode_ctrl(int chan, enum cam_flash_mode cam_mode)
{
struct s2mu107_fled_data *fled = g_fled_data;
int mode = -1;
mode = s2mu107_mode_change_cam_to_leds(cam_mode);
if ((chan <= 0) || (chan > S2MU107_CH_MAX) ||
(mode < 0) || (mode >= S2MU107_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;
}
s2mu107_fled_set_mode(fled, chan, mode);
s2mu107_fled_test_read(fled);
return 0;
}
int s2mu107_fled_set_curr(int chan, enum cam_flash_mode cam_mode, int curr)
{
struct s2mu107_fled_data *fled = g_fled_data;
int mode = -1;
mode = s2mu107_mode_change_cam_to_leds(cam_mode);
/* Check channel */
if ((chan <= 0) || (chan > S2MU107_CH_MAX)) {
pr_err("%s: Wrong channel.\n", __func__);
return -EFAULT;
}
switch (mode) {
case S2MU107_FLED_MODE_TORCH:
/* Set curr. */
s2mu107_fled_set_torch_curr(fled, chan, curr);
break;
case S2MU107_FLED_MODE_FLASH:
/* Set curr. */
s2mu107_fled_set_flash_curr(fled, chan, curr);
break;
default:
pr_info("%s: MODE(%02d) does not exist!!\n", __func__, mode);
return -1;
}
/* Test read */
s2mu107_fled_test_read(fled);
return 0;
}
int s2mu107_fled_get_curr(int chan, enum cam_flash_mode cam_mode)
{
struct s2mu107_fled_data *fled = g_fled_data;
int mode = -1, curr = 0;
mode = s2mu107_mode_change_cam_to_leds(cam_mode);
/* Check channel */
if ((chan <= 0) || (chan > S2MU107_CH_MAX)) {
pr_err("%s: Wrong channel.\n", __func__);
return -EFAULT;
}
switch (mode) {
case S2MU107_FLED_MODE_TORCH:
curr = s2mu107_fled_get_torch_curr(fled, chan);
break;
case S2MU107_FLED_MODE_FLASH:
curr = s2mu107_fled_get_flash_curr(fled, chan);
break;
default:
return -1;
}
/* Test read */
s2mu107_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 s2mu107_fled_data *fled = container_of(led_cdev,
struct s2mu107_fled_data,
cdev);
int cnt = 0, curr = 0, i;
char str[1016] = {0,};
/* Read curr. */
for (i = 1; i <= S2MU107_CH_MAX; i++) {
curr = s2mu107_fled_get_flash_curr(fled, i);
pr_info("%s: CH(%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 s2mu107_fled_data *fled = container_of(led_cdev,
struct s2mu107_fled_data,
cdev);
int chan = -1, curr = -1;
sscanf(buf, "%d %d", &chan, &curr);
/* Check channel */
if ((chan <= 0) || (chan > S2MU107_CH_MAX)) {
pr_err("%s: Wrong channel.\n", __func__);
return -EFAULT;
}
/* Set curr. */
s2mu107_fled_set_flash_curr(fled, chan, curr);
/* Test read */
s2mu107_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 s2mu107_fled_data *fled = container_of(led_cdev,
struct s2mu107_fled_data,
cdev);
int cnt = 0, curr = 0, i;
char str[128] = {0,};
/* Read curr. */
for (i = 1; i <= S2MU107_CH_MAX; i++) {
curr = s2mu107_fled_get_torch_curr(fled, i);
pr_info("%s: CH(%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);
pr_info("%s: str=%s cnt=%d\n", __func__, str, cnt);
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 s2mu107_fled_data *fled = container_of(led_cdev,
struct s2mu107_fled_data,
cdev);
int chan = -1, curr = -1;
sscanf(buf, "%d %d", &chan, &curr);
/* Check channel */
if ((chan <= 0) || (chan > S2MU107_CH_MAX)) {
pr_err("%s: Wrong channel.\n", __func__);
return -EFAULT;
}
/* Set curr. */
s2mu107_fled_set_torch_curr(fled, chan, curr);
/* Test read */
s2mu107_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 s2mu107_fled_data *fled = container_of(led_cdev,
struct s2mu107_fled_data,
cdev);
int cnt = 0, mode = 0, i;
char str[512] = {0,};
s2mu107_fled_test_read(fled);
for (i = 1; i <= S2MU107_CH_MAX; i++) {
mode = s2mu107_fled_get_mode(fled, i);
if (mode >= 0)
cnt += sprintf(str + strlen(str), "CH%02d: %s, ", i,
s2mu107_fled_mode_string[mode]);
}
cnt += sprintf(str + strlen(str), "\n");
strcpy(buf, str);
pr_err("%s: str=%s cnt=%d\n", __func__, str, cnt);
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 s2mu107_fled_data *fled = container_of(led_cdev,
struct s2mu107_fled_data,
cdev);
int chan = -1, mode = -1;
sscanf(buf, "%d %d", &chan, &mode);
if ((chan <= 0) || (chan > S2MU107_CH_MAX) ||
(mode < 0) || (mode >= S2MU107_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;
}
/* I2C Control */
if (fled->control_mode == CONTROL_I2C) {
s2mu107_fled_set_mode(fled, chan, mode);
return size;
}
/* GPIO Control */
switch (mode) {
case S2MU107_FLED_MODE_OFF:
s2mu107_led_mode_ctrl(S2MU107_FLED_MODE_OFF);
break;
case S2MU107_FLED_MODE_TORCH:
s2mu107_led_mode_ctrl(S2MU107_FLED_MODE_TORCH);
break;
case S2MU107_FLED_MODE_FLASH:
s2mu107_led_mode_ctrl(S2MU107_FLED_MODE_FLASH);
break;
default:
break;
}
s2mu107_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 *s2mu107_fled_attrs[] = {
&dev_attr_fled_mode.attr,
&dev_attr_fled_flash_curr.attr,
&dev_attr_fled_torch_curr.attr,
NULL
};
ATTRIBUTE_GROUPS(s2mu107_fled);
void s2mu107_fled_set_operation_mode(int mode)
{
if (mode) {
s2mu107_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;
s2mu107_fled_operating_mode(g_fled_data, AUTO_MODE);
pr_info("%s: Auto control mode set\n", __func__);
}
}
static void s2mu107_set_interface(struct s2mu107_fled_data *fled)
{
int flash_gpio = fled->pdata->flash_gpio;
int torch_gpio = fled->pdata->torch_gpio;
if (gpio_is_valid(flash_gpio) && gpio_is_valid(torch_gpio)) {
pr_info("%s: s2mu107_fled gpio mode\n", __func__);
/* Set GPIO */
fled->control_mode = CONTROL_GPIO;
/* Request 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");
/* Free GPIO */
gpio_free(fled->flash_gpio);
gpio_free(fled->torch_gpio);
/* CAM_FLASH_EN -> FLASH gpio mode */
s2mu107_fled_set_mode(fled, 1, S2MU107_FLED_MODE_FLASH);
/* CAM_TORCH_EN -> TORCH gpio mode */
s2mu107_fled_set_mode(fled, 1, S2MU107_FLED_MODE_TORCH);
/* FLED off */
s2mu107_led_mode_ctrl(S2MU107_FLED_MODE_OFF);
} else
fled->control_mode = CONTROL_I2C;
}
static void s2mu107_fled_init(struct s2mu107_fled_data *fled)
{
int ret;
pr_info("%s: s2mu107_fled init start\n", __func__);
/* 0x8C[7:4] set to 1010 */
ret = s2mu107_update_reg(fled->chg, 0x8C, 0xA0, 0xF0);
if (ret < 0)
pr_info("%s: fail to update reg\n", __func__);
/* 0x25[2:1] set to 11 */
ret = s2mu107_update_reg(fled->i2c, 0x25, 0x06, 0x06);
if (ret < 0)
pr_info("%s: fail to update reg\n", __func__);
/* FLED interface(I2C or GPIO) setting */
s2mu107_set_interface(fled);
/* FLED driver operating mode set, TA only mode*/
fled->set_on_factory = 0;
if (factory_mode) {
s2mu107_fled_operating_mode(fled, TA_MODE);
fled->set_on_factory = 1;
}
/* for Flash Auto boost */
s2mu107_update_reg(fled->i2c, S2MU107_FLED_TEST2, 0x60, 0x60);
/* flash current set */
s2mu107_fled_set_flash_curr(fled, 1, fled->pdata->flash_current);
/* torch current set */
s2mu107_fled_set_torch_curr(fled, 1, fled->pdata->torch_current);
s2mu107_fled_test_read(fled);
}
#if defined(CONFIG_OF)
static int s2mu107_led_dt_parse_pdata(struct device *dev,
struct s2mu107_fled_platform_data *pdata)
{
struct device_node *led_np, *np;
int ret;
#if 0
struct device_node *c_np;
u32 temp, index;
#endif
led_np = dev->parent->of_node;
pr_info("%s: DT parsing\n", __func__);
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 = 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, "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,
S2MU107_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;
}
pr_err("%s : fled current config in dtsi: %d %d %d %d\n",
__func__, pdata->flash_current, pdata->torch_current, pdata->movie_current, pdata->factory_current);
if (pdata->sc_name == NULL)
pdata->sc_name = "s2mu107-switching-charger";
return 0;
}
#endif /* CONFIG_OF */
#define CONFIG_S2MU107_FLASH_LED_SYSFS 1
#if defined(CONFIG_S2MU107_FLASH_LED_SYSFS)
static ssize_t rear_flash_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
int flash_current = 0, torch_current = 0;
int mode = -1, value = 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, Wrong mode.\n", __func__, value);
return -EFAULT;
}
pr_info("%s: %d: rear_flash_store:\n", __func__, value);
if(NULL == g_fled_data) {
pr_err("%s: s2mu107 flash device is NULL, return\n", __func__);
return -1;
}
g_fled_data->sysfs_input_data = value;
flash_current = g_fled_data->pdata->flash_current;
torch_current = g_fled_data->pdata->torch_current;
if (value <= 0) {
mode = S2MU107_FLED_MODE_OFF;
} else if (value == 1) {
mode = S2MU107_FLED_MODE_TORCH;
torch_current = g_fled_data->pdata->flashlight_current[0];
} else if (value == 100) {
/* Factory Torch*/
pr_info("%s: factory torch current [%d]\n",
__func__, g_fled_data->pdata->factory_current);
torch_current = g_fled_data->pdata->factory_current;
mode = S2MU107_FLED_MODE_TORCH;
} else if (value == 200) {
/* Factory Flash */
pr_info("%s: factory flash current [%d]\n",
__func__, g_fled_data->pdata->factory_current);
flash_current = g_fled_data->pdata->factory_current;
mode = S2MU107_FLED_MODE_FLASH;
} else if (value <= 1010 && value >= 1001) {
mode = S2MU107_FLED_MODE_TORCH;
/* (value) 1001, 1002, 1004, 1006, 1009 */
if (value <= 1001)
torch_current = g_fled_data->pdata->flashlight_current[0];
else if (value <= 1002)
torch_current = g_fled_data->pdata->flashlight_current[1];
else if (value <= 1004)
torch_current = g_fled_data->pdata->flashlight_current[2];
else if (value <= 1006)
torch_current = g_fled_data->pdata->flashlight_current[3];
else if (value <= 1009)
torch_current = g_fled_data->pdata->flashlight_current[4];
else
torch_current = g_fled_data->pdata->torch_current;
g_fled_data->sysfs_input_data = 1;
} else if (value == 2) {
mode = S2MU107_FLED_MODE_FLASH;
}
mutex_lock(&g_fled_data->lock);
if (g_fled_data->control_mode == CONTROL_I2C) {
s2mu107_fled_set_mode(g_fled_data, 1, mode);
} else {
if (mode == S2MU107_FLED_MODE_TORCH) {
pr_info("%s: %d: S2MU107_FLED_MODE_TORCH - %dmA\n",
__func__, value, torch_current);
/* torch current set */
s2mu107_fled_set_torch_curr(g_fled_data, 1,
torch_current);
s2mu107_led_mode_ctrl(S2MU107_FLED_MODE_TORCH);
} else if (mode == S2MU107_FLED_MODE_FLASH) {
pr_info("%s: %d: S2MU107_FLED_MODE_FLASH - %dmA\n",
__func__, value, flash_current);
/* flash current set */
s2mu107_fled_set_flash_curr(g_fled_data, 1,
flash_current);
s2mu107_led_mode_ctrl(S2MU107_FLED_MODE_FLASH);
} else {
pr_info("%s: %d: S2MU107_FLED_MODE_OFF\n",
__func__, value);
/* flash, torch current set for initial current */
flash_current = g_fled_data->pdata->flash_current;
torch_current = g_fled_data->pdata->torch_current;
/* flash current set */
s2mu107_fled_set_flash_curr(g_fled_data, 1,
flash_current);
/* torch current set */
s2mu107_fled_set_torch_curr(g_fled_data, 1,
torch_current);
s2mu107_led_mode_ctrl(S2MU107_FLED_MODE_OFF);
}
}
mutex_unlock(&g_fled_data->lock);
s2mu107_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;
}
if (!IS_ERR_OR_NULL(cam_dev_flash)) {
device_remove_file(cam_dev_flash, &dev_attr_rear_flash);
device_remove_file(cam_dev_flash, &dev_attr_rear_torch_flash);
flash_dev = cam_dev_flash;
} else {
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;
}
#endif
static int s2mu107_led_pinctrl_init(
struct s2mu107_pinctrl_info *s2mu107_pctrl, struct device *dev)
{
s2mu107_pctrl->pinctrl = devm_pinctrl_get(dev);
if (IS_ERR_OR_NULL(s2mu107_pctrl->pinctrl)) {
pr_err("%s: Getting pinctrl handle failed", __func__);
return -EINVAL;
}
s2mu107_pctrl->gpio_state_active =
pinctrl_lookup_state(s2mu107_pctrl->pinctrl,
"fled_default");
if (IS_ERR_OR_NULL(s2mu107_pctrl->gpio_state_active)) {
pr_err("%s: Failed to get the active state pinctrl handle", __func__);
return -EINVAL;
}
s2mu107_pctrl->gpio_state_suspend
= pinctrl_lookup_state(s2mu107_pctrl->pinctrl,
"fled_suspend");
if (IS_ERR_OR_NULL(s2mu107_pctrl->gpio_state_suspend)) {
pr_err("%s Failed to get the suspend state pinctrl handle", __func__);
return -EINVAL;
}
return 0;
}
int ext_pmic_cam_flash_ctrl(int cam_mode, int curr)
{
int flash_current = 0, torch_current = 0;
int mode = -1;
if(NULL == g_fled_data) {
pr_err("%s: s2mu107 flash device is NULL, return\n", __func__);
return 0;
}
mutex_lock(&g_fled_data->lock);
mode = s2mu107_mode_change_cam_to_leds(cam_mode);
pr_info("%s: ext_pmic_cam_flash_ctrl cam_mode=%d curr=%d mode=%d\n", __func__, cam_mode, curr, mode);
if(curr > 0) {
flash_current = curr;
torch_current = curr;
} else {
flash_current = g_fled_data->pdata->flash_current;
torch_current = g_fled_data->pdata->torch_current;
}
if (g_fled_data->control_mode == CONTROL_I2C) {
s2mu107_fled_set_mode(g_fled_data, 1, mode);
} else {
if (mode == S2MU107_FLED_MODE_TORCH) {
pr_info("%s: S2MU107_FLED_MODE_TORCH - %dmA\n",
__func__, torch_current);
/* torch current set */
s2mu107_fled_set_torch_curr(g_fled_data, 1,
torch_current);
s2mu107_led_mode_ctrl(S2MU107_FLED_MODE_TORCH);
} else if (mode == S2MU107_FLED_MODE_FLASH) {
pr_info("%s: S2MU107_FLED_MODE_FLASH - %dmA\n",
__func__, flash_current);
/* flash current set */
s2mu107_fled_set_flash_curr(g_fled_data, 1,
flash_current);
s2mu107_led_mode_ctrl(S2MU107_FLED_MODE_FLASH);
} else {
pr_info("%s: S2MU107_FLED_MODE_OFF\n",
__func__);
/* flash, torch current set for initial current */
flash_current = 0;
torch_current = 0;
/* flash current set */
s2mu107_fled_set_flash_curr(g_fled_data, 1,
flash_current);
/* torch current set */
s2mu107_fled_set_torch_curr(g_fled_data, 1,
torch_current);
s2mu107_led_mode_ctrl(S2MU107_FLED_MODE_OFF);
}
}
mutex_unlock(&g_fled_data->lock);
s2mu107_fled_test_read(g_fled_data);
pr_info("%s: ext_pmic_cam_flash_ctrl END\n", __func__);
return 0;
}
static int s2mu107_led_probe(struct platform_device *pdev)
{
int ret = 0;
struct s2mu107_dev *s2mu107 = dev_get_drvdata(pdev->dev.parent);
struct s2mu107_fled_data *fled_data;
char name[20];
pr_info("%s: s2mu107_fled start\n", __func__);
if (!s2mu107) {
dev_err(&pdev->dev, "drvdata->dev.parent not supplied\n");
return -ENODEV;
}
fled_data = devm_kzalloc(&pdev->dev,
sizeof(struct s2mu107_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 = s2mu107->i2c;
fled_data->chg = s2mu107->chg;
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 (s2mu107->dev->of_node) {
ret = s2mu107_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 ret;
}
}
platform_set_drvdata(pdev, fled_data);
/* Store fled_data for EXPORT_SYMBOL */
g_fled_data = fled_data;
snprintf(name, sizeof(name), "fled-s2mu107");
fled_data->cdev.name = name;
fled_data->cdev.groups = s2mu107_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;
s2mu107_fled_init(g_fled_data);
mutex_init(&fled_data->lock);
fled_data->sc_psy = power_supply_get_by_name(fled_data->pdata->sc_name);
#if defined(CONFIG_S2MU107_FLASH_LED_SYSFS)
/* create sysfs for camera */
create_flash_sysfs();
#endif
muic_notifier_register(&fled_data->batt_nb, ta_notification,
MUIC_NOTIFY_DEV_CHARGER);
#if 0
/* init pinctrl */
ret = s2mu107_led_pinctrl_init(&fled_data->flash_pctrl, &pdev->dev);
if (ret >= 0) {
// make pin state to suspend
ret = pinctrl_select_state(fled_data->flash_pctrl.pinctrl, fled_data->flash_pctrl.gpio_state_suspend);
if (ret < 0) {
pr_info("%s: Cannot set pin to suspend state", __func__);
return ret;
}
}
#endif
pr_info("%s: s2mu107_fled loaded\n", __func__);
return 0;
}
static int s2mu107_led_remove(struct platform_device *pdev)
{
#if defined(CONFIG_S2MU107_FLASH_LED_SYSFS)
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);
#endif
mutex_destroy(&g_fled_data->lock);
return 0;
}
static int32_t s2mu107_led_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct s2mu107_dev *s2mu107;
struct s2mu107_fled_platform_data *pdata = i2c->dev.platform_data;
struct s2mu107_fled_data *fled_data = NULL;
int ret = 0;
pr_info("%s i2c addr = 0x%x g_fled_data=%p\n", __func__, i2c->addr, g_fled_data);
if (NULL == g_fled_data) {
s2mu107 = devm_kzalloc(&i2c->dev, sizeof(struct s2mu107_dev),
GFP_KERNEL);
if (!s2mu107) {
dev_err(&i2c->dev, "%s: Failed to alloc mem for s2mu107\n",
__func__);
return -ENOMEM;
}
fled_data = devm_kzalloc(&i2c->dev,
sizeof(struct s2mu107_fled_data),
GFP_KERNEL);
if (!fled_data) {
pr_err("%s: failed to allocate driver data\n", __func__);
return -ENOMEM;
}
if (i2c->dev.of_node) {
pdata = devm_kzalloc(&i2c->dev,
sizeof(struct s2mu107_fled_platform_data),
GFP_KERNEL);
if (!pdata) {
dev_err(&i2c->dev, "Failed to allocate memory\n");
ret = -ENOMEM;
goto err;
}
ret = s2mu107_led_dt_parse_pdata(&i2c->dev, pdata);
if (ret < 0) {
dev_err(&i2c->dev, "Failed to get device of_node\n");
goto err;
}
fled_data->pdata = i2c->dev.platform_data = pdata;
} else {
pr_err("%s: there is no of_node data\n", __func__);
fled_data->pdata = pdata = i2c->dev.platform_data;
}
s2mu107->dev = &i2c->dev;
s2mu107->i2c = i2c;
s2mu107->irq = i2c->irq;
mutex_init(&s2mu107->i2c_lock);
pr_info("%s: i2c_set_clientdata for s2mu107=%p pdata=%p\n", __func__, s2mu107, fled_data->pdata);
i2c_set_clientdata(i2c, s2mu107);
/* Store fled_data for EXPORT_SYMBOL */
g_fled_data = fled_data;
s2mu107_fled_init(g_fled_data);
mutex_init(&fled_data->lock);
muic_notifier_register(&fled_data->batt_nb, ta_notification,
MUIC_NOTIFY_DEV_CHARGER);
} else {
fled_data = g_fled_data;
}
ret = s2mu107_led_pinctrl_init(&fled_data->flash_pctrl, &i2c->dev);
if (ret >= 0) {
// make pin state to suspend
ret = pinctrl_select_state(fled_data->flash_pctrl.pinctrl, fled_data->flash_pctrl.gpio_state_suspend);
if (ret < 0) {
pr_info("%s: Cannot set pin to suspend state", __func__);
return ret;
}
else
pr_info("%s: qfh success to set pin to suspend state", __func__);
}
pr_info("%s: i2c probe done fled_data=%p\n", __func__, fled_data);
return ret;
err:
kfree(s2mu107);
return ret;
}
static int s2mu107_led_i2c_remove(struct i2c_client *client)
{
struct s2mu107_dev *s2mu107 = i2c_get_clientdata(client);
pr_info("%s: remove i2c device s2mu107 = %p\n", __func__, s2mu107);
i2c_unregister_device(s2mu107->i2c);
i2c_set_clientdata(client, NULL);
return 0;
}
#if defined(CONFIG_OF)
static const struct of_device_id cam_flash_dt_match[] = {
{.compatible = "qcom,s2mu107-fled", .data = NULL},
{}
};
MODULE_DEVICE_TABLE(of, cam_flash_dt_match);
#endif
static const struct platform_device_id s2mu107_leds_id[] = {
{"leds-s2mu107", 0},
{},
};
static struct platform_driver s2mu107_led_driver = {
.driver = {
.name = "leds-s2mu107",
.owner = THIS_MODULE,
#if defined(CONFIG_OF)
.of_match_table = cam_flash_dt_match,
#endif
},
.probe = s2mu107_led_probe,
.remove = s2mu107_led_remove,
.id_table = s2mu107_leds_id,
};
#define FLED_DRIVER_I2C "i2c_fled"
static const struct i2c_device_id i2c_id[] = {
{FLED_DRIVER_I2C, (kernel_ulong_t)NULL},
{ }
};
static struct i2c_driver s2mu107_led_driver_i2c = {
.id_table = i2c_id,
.probe = s2mu107_led_i2c_probe,
.remove = s2mu107_led_i2c_remove,
.driver = {
.name = FLED_DRIVER_I2C,
.owner = THIS_MODULE,
.of_match_table = cam_flash_dt_match,
.suppress_bind_attrs = true,
},
};
static int __init s2mu107_led_driver_init(void)
{
int rc = 0;
pr_info("%s: platform_driver_register start...\n", __func__);
rc = platform_driver_register(&s2mu107_led_driver);
if (rc < 0) {
pr_info("%s: platform_driver_register Failed: rc = %d",
__func__, rc);
return rc;
}
pr_info("%s: s2mu107_fled i2c_add_driver start...\n", __func__);
rc = i2c_add_driver(&s2mu107_led_driver_i2c);
if (rc)
pr_info("%s: s2mu107_fled i2c_add_driver rc=%d\n", __func__, rc);
return rc;
}
module_init(s2mu107_led_driver_init);
static void __exit s2mu107_led_driver_exit(void)
{
pr_info("%s: s2mu107_led_driver_exit\n", __func__);
platform_driver_unregister(&s2mu107_led_driver);
i2c_del_driver(&s2mu107_led_driver_i2c);
}
module_exit(s2mu107_led_driver_exit);
MODULE_AUTHOR("Keunho Hwang <keunho.hwang@samsung.com>");
MODULE_DESCRIPTION("SAMSUNG s2mu107 flash LED Driver");
MODULE_LICENSE("GPL");