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kernel_samsung_a34x-permissive/drivers/misc/mediatek/flashlight/flashlights-aw3644.c
Fede2782 c05564c4d8
Import A346BXXU1AWB9 kernel source 
Android 13
2024-04-28 15:49:01 +02:00

1030 lines
26 KiB
C
Executable file
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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2019 MediaTek Inc.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/wait.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/poll.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/cdev.h>
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/time.h>
#include <linux/io.h>
#include <linux/uaccess.h>
#include <linux/hrtimer.h>
#include <linux/ktime.h>
#include <linux/version.h>
#include <linux/mutex.h>
#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/pinctrl/consumer.h>
#include "flashlight-core.h"
#include "flashlight-dt.h"
/* define device tree */
/* TODO: modify temp device tree name */
#ifndef AW3644_DTNAME_I2C
#define AW3644_DTNAME_I2C "mediatek,strobe_main"
#endif
/* define device tree */
/* TODO: modify temp device tree name */
#ifndef AW3644_DTNAME
#define AW3644_DTNAME "mediatek,flashlights_aw3644"
#endif
/* TODO: define driver name */
#define AW3644_NAME "flashlights-aw3644"
/* define registers */
#define AW3644_REG_ENABLE 0x01
#define AW3644_REG_IVFM 0x02
#define AW3644_REG_FLASH_LEVEL_LED1 0x03
#define AW3644_REG_FLASH_LEVEL_LED2 0x04
#define AW3644_REG_TORCH_LEVEL_LED1 0x05
#define AW3644_REG_TORCH_LEVEL_LED2 0x06
#define AW3644_REG_BOOST_CONFIG 0x07
#define AW3644_REG_TIMING_CONFIG 0x08
#define AW3644_REG_TEMP 0x09
#define AW3644_REG_FLAG1 0x0A
#define AW3644_REG_FLAG2 0x0B
#define AW3644_REG_DEVICE_ID 0x0C
#if defined(TRAN_KB7J_H615) || defined(TRAN_LC6)///////KB7J///////
#define AW3644_LED2_LEVEL_NUM 30
#define AW3644_LED2_LEVEL_TORCH 8
#define AW3644_LED2_LEVEL_FLASH 30
#define AW3644_LEVEL_NUM 2
#define AW3644_LEVEL_TORCH 2
#define AW3644_LEVEL_FLASH 2
#else
#define AW3644_LEVEL_NUM 30
#define AW3644_LEVEL_TORCH 8
#define AW3644_LEVEL_FLASH AW3644_LEVEL_NUM
#define AW3644_LED2_LEVEL_NUM 2
#define AW3644_LED2_LEVEL_TORCH 2
#define AW3644_LED2_LEVEL_FLASH 2
#endif
#define AW3644_PINCTRL_PIN_HWEN 0
#define AW3644_PINCTRL_PINSTATE_LOW 0
#define AW3644_PINCTRL_PINSTATE_HIGH 1
#define AW3644_PINCTRL_STATE_HWEN_HIGH "hwen_high"
#define AW3644_PINCTRL_STATE_HWEN_LOW "hwen_low"
static struct pinctrl *aw3644_pinctrl;
static struct pinctrl_state *aw3644_hwen_high;
static struct pinctrl_state *aw3644_hwen_low;
/* define channel, level */
#define AW3644_CHANNEL_NUM 2
#define AW3644_CHANNEL_CH1 0
#define AW3644_CHANNEL_CH2 1
#define AW3644_NONE (-1)
#define AW3644_DISABLE 0
#define AW3644_ENABLE 1
#define AW3644_ENABLE_TORCH 1
#define AW3644_ENABLE_FLASH 2
#define AW3644_WAIT_TIME 3
#define AW3644_RETRY_TIMES 3
/* TODO: define register */
/* define mutex, work queue and timer */
static DEFINE_MUTEX(aw3644_mutex);
static struct work_struct aw3644_work_ch1;
static struct work_struct aw3644_work_ch2;
static struct hrtimer aw3644_timer_ch1;
static struct hrtimer aw3644_timer_ch2;
static unsigned int aw3644_timeout_ms[AW3644_CHANNEL_NUM];
/* define usage count */
static int use_count;
/* define i2c */
static struct i2c_client *AW3644_i2c_client;
/* platform data */
struct aw3644_platform_data {
u8 torch_pin_enable;
u8 pam_sync_pin_enable;
u8 thermal_comp_mode_enable;
u8 strobe_pin_disable;
u8 vout_mode_enable;
};
/* aw3644 chip data */
struct aw3644_chip_data {
struct i2c_client *client;
struct aw3644_platform_data *pdata;
struct mutex lock;
u8 last_flag;
u8 no_pdata;
};
static int aw3644_flash_read(struct i2c_client *client, u8 reg)
{
int ret;
//char data = 0;
struct aw3644_chip_data *chip = i2c_get_clientdata(client);
mutex_lock(&chip->lock);
ret = i2c_smbus_read_byte_data(client, reg);
mutex_unlock(&chip->lock);
pr_info("%s reg:0x%x val:0x%x\n", __func__, reg, ret);
if (ret < 0)
pr_info("failed reading at 0x%02x\n", reg);
return ret;
}
/******************************************************************************
* aw3644 operations
*****************************************************************************/
/* i2c wrapper function */
static int aw3644_flash_write(struct i2c_client *client, u8 reg, u8 val)
{
int ret;
struct aw3644_chip_data *chip = i2c_get_clientdata(client);
mutex_lock(&chip->lock);
ret = i2c_smbus_write_byte_data(client, reg, val);
mutex_unlock(&chip->lock);
if (ret < 0)
pr_info("failed writing at 0x%02x\n", reg);
return ret;
}
/******************************************************************************
* Pinctrl configuration
*****************************************************************************/
static int aw3644_pinctrl_init(struct platform_device *pdev)
{
int ret = 0;
pr_info("%s in\n", __func__);
//return 1;
/* get pinctrl */
aw3644_pinctrl = devm_pinctrl_get(&pdev->dev);
if (IS_ERR(aw3644_pinctrl)) {
pr_info("Failed to get flashlight pinctrl.\n");
ret = PTR_ERR(aw3644_pinctrl);
return ret;
}
/* Flashlight HWEN pin initialization */
aw3644_hwen_high = pinctrl_lookup_state(aw3644_pinctrl,
AW3644_PINCTRL_STATE_HWEN_HIGH);
if (IS_ERR(aw3644_hwen_high)) {
pr_info("Failed to init (%s)\n",
AW3644_PINCTRL_STATE_HWEN_HIGH);
ret = PTR_ERR(aw3644_hwen_high);
}
aw3644_hwen_low = pinctrl_lookup_state(aw3644_pinctrl,
AW3644_PINCTRL_STATE_HWEN_LOW);
if (IS_ERR(aw3644_hwen_low)) {
pr_info("Failed to init (%s)\n", AW3644_PINCTRL_STATE_HWEN_LOW);
ret = PTR_ERR(aw3644_hwen_low);
}
pr_info("%s out\n", __func__);
return ret;
}
static int aw3644_pinctrl_set(int pin, int state)
{
int ret = 0;
pr_info("%s in\n", __func__);
//return 0;
if (IS_ERR(aw3644_pinctrl)) {
pr_info("pinctrl is not available\n");
return -1;
}
switch (pin) {
case AW3644_PINCTRL_PIN_HWEN:
if (state == AW3644_PINCTRL_PINSTATE_LOW &&
!IS_ERR(aw3644_hwen_low))
pinctrl_select_state(aw3644_pinctrl, aw3644_hwen_low);
else if (state == AW3644_PINCTRL_PINSTATE_HIGH &&
!IS_ERR(aw3644_hwen_high))
pinctrl_select_state(aw3644_pinctrl, aw3644_hwen_high);
else
pr_info("set err, pin(%d) state(%d)\n", pin, state);
break;
default:
pr_info("set err, pin(%d) state(%d)\n", pin, state);
break;
}
pr_info("pin(%d) state(%d)\n", pin, state);
pr_info("%s out\n", __func__);
return ret;
}
static int aw3644_decouple_mode;
static int aw3644_keepstate_decouple_mode;
static int aw3644_en_ch1;
static int aw3644_en_ch2;
static int aw3644_level_ch1;
static int aw3644_level_ch2;
static int aw3644_set_torch_brightness(int channel, int regval)
{
int led1regval = 0;
if (channel == AW3644_CHANNEL_CH1) {
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_TORCH_LEVEL_LED1, regval);
} else if (channel == AW3644_CHANNEL_CH2) {
if (aw3644_keepstate_decouple_mode == 1) {//360 torch
led1regval = aw3644_flash_read(AW3644_i2c_client,
AW3644_REG_TORCH_LEVEL_LED1);
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_TORCH_LEVEL_LED1, (0x7f&led1regval));
} else {
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_TORCH_LEVEL_LED1, 0);
}
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_TORCH_LEVEL_LED2, regval);
} else {
pr_info("Error channel\n");
return -1;
}
mdelay(AW3644_WAIT_TIME);
return 0;
}
static int aw3644_set_strobe_brightness(int channel, int regval)
{
int led1regval = 0;
if (channel == AW3644_CHANNEL_CH1) {
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_FLASH_LEVEL_LED1, regval);
} else if (channel == AW3644_CHANNEL_CH2) {
if (aw3644_keepstate_decouple_mode == 1) {//360 torch
led1regval = aw3644_flash_read(AW3644_i2c_client,
AW3644_REG_FLASH_LEVEL_LED1);
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_FLASH_LEVEL_LED1, (0x7f&led1regval));
} else {
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_FLASH_LEVEL_LED1, 0);
}
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_FLASH_LEVEL_LED2, regval);
} else {
pr_info("Error channel\n");
return -1;
}
mdelay(AW3644_WAIT_TIME);
return 0;
}
#if defined(TRAN_KB7J_H615) || defined(TRAN_LC6)///////KB7J///////
static const int aw3644_led2_current[AW3644_LED2_LEVEL_NUM] = {//y=25 + 50*x
25, 75, 125, 175, 225, 275, 325, 375,
425, 475, 525, 575, 625, 675, 725, 775,
825, 875, 925, 975, 1025, 1075, 1125, 1175,
1225, 1275, 1325, 1375, 1425, 1475
};
//ITORCH(mA)=(Brightness Code*2.91mA)+2.55mA
#if defined(TRAN_LC6)
static const unsigned char aw3644_led2_torch_level[AW3644_LED2_LEVEL_TORCH] = {
0x7, 0x18, 0x2A, 0x3B, 0x4C, 0x5D, 0x60, 0x66
};
#else
static const unsigned char aw3644_led2_torch_level[AW3644_LED2_LEVEL_TORCH] = {
0x7, 0x18, 0x2A, 0x3B, 0x4C, 0x5D, 0x6E, 0x7F
};
#endif
//IFLASH(mA)=(Brightness Code*11.72mA)+11.35mA
#if defined(TRAN_LC6)
static const unsigned char aw3644_led2_strobe_level[AW3644_LED2_LEVEL_FLASH] = {
0x1, 0x5, 0x9, 0xD, 0x12, 0x16, 0x1A, 0x1F,
0x23, 0x27, 0x2B, 0x30, 0x34, 0x38, 0x3C, 0x41,
0x45, 0x49, 0x4D, 0x52, 0x56, 0x5A, 0x5F, 0x63,
0x67, 0x6B, 0x70, 0x74, 0x75, 0x7E
};
#else
static const unsigned char aw3644_led2_strobe_level[AW3644_LED2_LEVEL_FLASH] = {
0x1, 0x5, 0x9, 0xD, 0x12, 0x16, 0x1A, 0x1F,
0x23, 0x27, 0x2B, 0x30, 0x34, 0x38, 0x3C, 0x41,
0x45, 0x49, 0x4D, 0x52, 0x56, 0x5A, 0x5F, 0x63,
0x67, 0x6B, 0x70, 0x74, 0x78, 0x7E
};
#endif
static const int aw3644_current[AW3644_LEVEL_NUM] = {
70, 80
};
#if defined(TRAN_LC6)
static const unsigned char aw3644_torch_level[30] = {
0x32, 0x46
};
static const unsigned char aw3644_strobe_level[30] = {
0x5, 0xA
};
#else
static const unsigned char aw3644_torch_level[30] = {
0x1E, 0x20
};
static const unsigned char aw3644_strobe_level[30] = {
0x2, 0x3
};
#endif
#else
//ITD:modify CBQHLES-5 by quan.chang 181018 start
static const int aw3644_current[AW3644_LEVEL_NUM] = {//y=25 + 50*x
25, 75, 125, 175, 225, 275, 325, 375,
425, 475, 525, 575, 625, 675, 725, 775,
825, 875, 925, 975, 1025, 1075, 1125, 1175,
1225, 1275, 1325, 1375, 1425, 1475
};
//ITORCH(mA)=(Brightness Code*2.91mA)+2.55mA
static const unsigned char aw3644_torch_level[AW3644_LEVEL_TORCH] = {
0x7, 0x18, 0x2A, 0x3B, 0x4C, 0x5D, 0x6E, 0x7F
};
//IFLASH(mA)=(Brightness Code*11.72mA)+11.35mA
#if defined(TRAN_CB7) || defined(TRAN_CB7J)
static const unsigned char aw3644_strobe_level[AW3644_LEVEL_FLASH] = {
0x1, 0x5, 0x9, 0xD, 0x12, 0x16, 0x1A, 0x1F,
0x23, 0x27, 0x2B, 0x30, 0x34, 0x38, 0x3C, 0x41,
0x45, 0x49, 0x4D, 0x52, 0x56, 0x5A, 0x5F, 0x63,
0x67, 0x6B, 0x70, 0x74, 0x78, 0x7F
};
#else
static const unsigned char aw3644_strobe_level[AW3644_LEVEL_FLASH] = {
0x1, 0x5, 0x9, 0xD, 0x12, 0x16, 0x1A, 0x1F,
0x23, 0x27, 0x2B, 0x30, 0x34, 0x38, 0x3C, 0x41,
0x45, 0x49, 0x4D, 0x52, 0x56, 0x5A, 0x5F, 0x63,
0x67, 0x6B, 0x70, 0x74, 0x78, 0x7C
};
#endif
static const int aw3644_led2_current[30] = {
70, 80
};
//ITD:modify CBQHLES-5 by quan.chang 181018 start
#if defined(TRAN_X625) || defined(TRAN_X625D) || \
defined(TRAN_KB3) || defined(TRAN_KB8)
static const unsigned char aw3644_led2_torch_level[30] = {
0x32, 0x34
};
#else
static const unsigned char aw3644_led2_torch_level[30] = {
0x17, 0x1B
};
#endif
//ITD:modify CBQHLES-5 by quan.chang 181018 end
static const unsigned char aw3644_led2_strobe_level[30] = {
0x2, 0x3
};
#endif///////KB7J///////
static int aw3644_is_torch(int channel, int level)
{
int torch_level = 0;
if (channel == AW3644_CHANNEL_CH1)
torch_level = AW3644_LEVEL_TORCH;
else if (channel == AW3644_CHANNEL_CH2)
torch_level = AW3644_LED2_LEVEL_TORCH;
if (level >= torch_level)
return -1;
return 0;
}
static int aw3644_verify_level(int channel, int level)
{
int level_num = 0;
if (channel == AW3644_CHANNEL_CH1)
level_num = AW3644_LEVEL_NUM;
else if (channel == AW3644_CHANNEL_CH2)
level_num = AW3644_LED2_LEVEL_NUM;
if (level < 0)
level = 0;
else if (level >= level_num)
level = level_num - 1;
return level;
}
/* flashlight enable function */
static int aw3644_enable(int channel)
{
int enableregval = 0;
if (channel == AW3644_CHANNEL_CH1) {
if (aw3644_en_ch1 == AW3644_ENABLE_FLASH) {
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_ENABLE, 0x0D);
} else {
if (aw3644_keepstate_decouple_mode == 1) {//360 torch
enableregval =
aw3644_flash_read(AW3644_i2c_client,
AW3644_REG_ENABLE);
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_ENABLE, (0x09|enableregval));
} else {
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_ENABLE, 0x09);
}
}
} else {
if (aw3644_en_ch2 == AW3644_ENABLE_FLASH) {
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_ENABLE, 0x0E);
} else {
if (aw3644_keepstate_decouple_mode == 1) {//360 torch
enableregval =
aw3644_flash_read(AW3644_i2c_client,
AW3644_REG_ENABLE);
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_ENABLE, (0x0A|enableregval));
} else {
aw3644_flash_write(AW3644_i2c_client,
AW3644_REG_ENABLE, 0x0A);
}
}
}
return 0;
}
/* flashlight disable function */
static int aw3644_disable(void)
{
pr_info("%s\n", __func__);
aw3644_flash_write(AW3644_i2c_client, AW3644_REG_ENABLE, 0x00);
return 0;
}
/* set flashlight level */
static int aw3644_set_level(int channel, int lel)
{
int level = 0;
level = aw3644_verify_level(channel, lel);
if (channel == AW3644_CHANNEL_CH1) {
aw3644_level_ch1 = level;
if (!aw3644_is_torch(channel, level)) {
aw3644_set_torch_brightness(
channel, aw3644_torch_level[level]);
} else {
aw3644_set_strobe_brightness(
channel, aw3644_strobe_level[level]);
}
} else if (channel == AW3644_CHANNEL_CH2) {
aw3644_level_ch2 = level;
if (!aw3644_is_torch(channel, level)) {
aw3644_set_torch_brightness(
channel, aw3644_led2_torch_level[level]);
} else {
aw3644_set_strobe_brightness(
channel, aw3644_led2_strobe_level[level]);
}
}
return 0;
}
static int aw3644_set_scenario(int scenario)
{
/* set decouple mode */
aw3644_decouple_mode = scenario & FLASHLIGHT_SCENARIO_DECOUPLE_MASK;
aw3644_keepstate_decouple_mode =
scenario & FLASHLIGHT_SCENARIO_KEEPSTATE_DECOUPLE_MASK;
return 0;
}
/* flashlight init */
static int aw3644_init(void)
{
pr_info("%s\n", __func__);
/* clear flashlight state */
aw3644_en_ch1 = AW3644_DISABLE;
aw3644_en_ch2 = AW3644_DISABLE;
/* clear decouple mode */
aw3644_decouple_mode = FLASHLIGHT_SCENARIO_COUPLE;
aw3644_keepstate_decouple_mode = FLASHLIGHT_SCENARIO_KEEPSTATE_COUPLE;
aw3644_pinctrl_set(AW3644_PINCTRL_PIN_HWEN,
AW3644_PINCTRL_PINSTATE_HIGH);
mdelay(AW3644_WAIT_TIME);
aw3644_flash_write(AW3644_i2c_client, AW3644_REG_ENABLE, 0x00);
aw3644_flash_write(AW3644_i2c_client, AW3644_REG_BOOST_CONFIG, 0x09);
aw3644_flash_write(AW3644_i2c_client, AW3644_REG_TIMING_CONFIG, 0x1f);
return 0;
}
/* flashlight uninit */
static int aw3644_uninit(void)
{
/* clear flashlight state */
aw3644_en_ch1 = AW3644_NONE;
aw3644_en_ch2 = AW3644_NONE;
aw3644_decouple_mode = FLASHLIGHT_SCENARIO_COUPLE;
aw3644_keepstate_decouple_mode = FLASHLIGHT_SCENARIO_KEEPSTATE_COUPLE;
aw3644_disable();
aw3644_pinctrl_set(AW3644_PINCTRL_PIN_HWEN,
AW3644_PINCTRL_PINSTATE_LOW);
return 0;
}
/******************************************************************************
* Timer and work queue
*****************************************************************************/
/******************************************************************************
* Timer and work queue
*****************************************************************************/
static void aw3644_work_disable_ch1(struct work_struct *data)
{
pr_debug("ht work queue callback\n");
aw3644_disable();
}
static void aw3644_work_disable_ch2(struct work_struct *data)
{
pr_debug("lt work queue callback\n");
aw3644_disable();
}
static enum hrtimer_restart aw3644_timer_func_ch1(struct hrtimer *timer)
{
schedule_work(&aw3644_work_ch1);
return HRTIMER_NORESTART;
}
static enum hrtimer_restart aw3644_timer_func_ch2(struct hrtimer *timer)
{
schedule_work(&aw3644_work_ch2);
return HRTIMER_NORESTART;
}
static int aw3644_timer_start(int channel, ktime_t ktime)
{
if (channel == AW3644_CHANNEL_CH1)
hrtimer_start(&aw3644_timer_ch1, ktime, HRTIMER_MODE_REL);
else if (channel == AW3644_CHANNEL_CH2)
hrtimer_start(&aw3644_timer_ch2, ktime, HRTIMER_MODE_REL);
else {
pr_info("Error channel\n");
return -1;
}
return 0;
}
static int aw3644_timer_cancel(int channel)
{
if (channel == AW3644_CHANNEL_CH1)
hrtimer_cancel(&aw3644_timer_ch1);
else if (channel == AW3644_CHANNEL_CH2)
hrtimer_cancel(&aw3644_timer_ch2);
else {
pr_info("Error channel\n");
return -1;
}
return 0;
}
static int aw3644_operate(int channel, int enable)
{
ktime_t ktime;
unsigned int s;
unsigned int ns;
/* setup enable/disable */
if (channel == AW3644_CHANNEL_CH1) {
aw3644_en_ch1 = enable;
if (aw3644_en_ch1)
if (aw3644_is_torch(channel, aw3644_level_ch1))
aw3644_en_ch1 = AW3644_ENABLE_FLASH;
} else if (channel == AW3644_CHANNEL_CH2) {
aw3644_en_ch2 = enable;
if (aw3644_en_ch2)
if (aw3644_is_torch(channel, aw3644_level_ch2))
aw3644_en_ch2 = AW3644_ENABLE_FLASH;
} else {
pr_info("Error channel\n");
return -1;
}
/* decouple mode */
if (aw3644_decouple_mode) {
if (channel == AW3644_CHANNEL_CH1) {
aw3644_en_ch2 = AW3644_DISABLE;
aw3644_timeout_ms[AW3644_CHANNEL_CH2] = 0;
} else if (channel == AW3644_CHANNEL_CH2) {
aw3644_en_ch1 = AW3644_DISABLE;
aw3644_timeout_ms[AW3644_CHANNEL_CH1] = 0;
}
}
/* operate flashlight and setup timer */
if ((aw3644_en_ch1 != AW3644_NONE) && (aw3644_en_ch2 != AW3644_NONE)) {
if ((aw3644_en_ch1 == AW3644_DISABLE) &&
(aw3644_en_ch2 == AW3644_DISABLE)) {
aw3644_disable();
aw3644_timer_cancel(AW3644_CHANNEL_CH1);
aw3644_timer_cancel(AW3644_CHANNEL_CH2);
} else {
if (aw3644_timeout_ms[AW3644_CHANNEL_CH1] &&
aw3644_en_ch1 != AW3644_DISABLE) {
s = aw3644_timeout_ms[AW3644_CHANNEL_CH1] /
1000;
ns = aw3644_timeout_ms[AW3644_CHANNEL_CH1] %
1000 * 1000000;
ktime = ktime_set(s, ns);
aw3644_timer_start(AW3644_CHANNEL_CH1, ktime);
}
if (aw3644_timeout_ms[AW3644_CHANNEL_CH2] &&
aw3644_en_ch2 != AW3644_DISABLE) {
s = aw3644_timeout_ms[AW3644_CHANNEL_CH2] /
1000;
ns = aw3644_timeout_ms[AW3644_CHANNEL_CH2] %
1000 * 1000000;
ktime = ktime_set(s, ns);
aw3644_timer_start(AW3644_CHANNEL_CH2, ktime);
}
aw3644_enable(channel);
}
/* clear flashlight state */
//ITD:modify KBSHLES-43 by quan.chang 180919 start
if ((aw3644_keepstate_decouple_mode == 0)
|| (channel != AW3644_CHANNEL_CH1))
aw3644_en_ch1 = AW3644_NONE;
if ((aw3644_keepstate_decouple_mode == 0)
|| (channel != AW3644_CHANNEL_CH2))
aw3644_en_ch2 = AW3644_NONE;
//ITD:modify KBSHLES-43 by quan.chang 180919 end
}
return 0;
}
/******************************************************************************
* Flashlight operations
*****************************************************************************/
static int aw3644_ioctl(unsigned int cmd, unsigned long arg)
{
struct flashlight_dev_arg *fl_arg;
int channel;
fl_arg = (struct flashlight_dev_arg *)arg;
channel = fl_arg->channel;
switch (cmd) {
case FLASH_IOC_SET_TIME_OUT_TIME_MS:
pr_debug("FLASH_IOC_SET_TIME_OUT_TIME_MS(%d): %d\n",
channel, (int)fl_arg->arg);
aw3644_timeout_ms[channel] = fl_arg->arg;
break;
case FLASH_IOC_SET_DUTY:
pr_debug("FLASH_IOC_SET_DUTY(%d): %d\n",
channel, (int)fl_arg->arg);
aw3644_set_level(channel, fl_arg->arg);
break;
case FLASH_IOC_SET_SCENARIO:
pr_debug("FLASH_IOC_SET_SCENARIO(%d): %d\n",
channel, (int)fl_arg->arg);
aw3644_set_scenario(fl_arg->arg);
break;
case FLASH_IOC_SET_ONOFF:
pr_debug("FLASH_IOC_SET_ONOFF(%d): %d\n",
channel, (int)fl_arg->arg);
aw3644_operate(channel, fl_arg->arg);
break;
default:
pr_info("No such command and arg(%d): (%d, %d)\n",
channel, _IOC_NR(cmd), (int)fl_arg->arg);
return -ENOTTY;
}
return 0;
}
static int aw3644_open(void)
{
return 0;
}
static int aw3644_release(void)
{
/* uninit chip and clear usage count */
mutex_lock(&aw3644_mutex);
use_count--;
if (!use_count)
aw3644_uninit();
if (use_count < 0)
use_count = 0;
mutex_unlock(&aw3644_mutex);
pr_info("Release: %d\n", use_count);
return 0;
}
static int aw3644_set_driver(int set)
{
int ret = 0;
/* init chip and set usage count */
mutex_lock(&aw3644_mutex);
if (set) {
if (!use_count)
ret = aw3644_init();
use_count++;
pr_debug("Set driver: %d\n", use_count);
} else {
use_count--;
if (!use_count)
ret = aw3644_uninit();
if (use_count < 0)
use_count = 0;
pr_debug("Unset driver: %d\n", use_count);
}
mutex_unlock(&aw3644_mutex);
return 0;
}
static ssize_t aw3644_strobe_store(struct flashlight_arg arg)
{
aw3644_set_driver(0);
aw3644_set_level(arg.channel, arg.level);
aw3644_enable(arg.channel);
mdelay(arg.dur);
aw3644_disable();
aw3644_release();
return 0;
}
static struct flashlight_operations aw3644_ops = {
aw3644_open,
aw3644_release,
aw3644_ioctl,
aw3644_strobe_store,
aw3644_set_driver
};
/******************************************************************************
* I2C device and driver
*****************************************************************************/
static int aw3644_chip_init(struct aw3644_chip_data *chip)
{
/* NOTE: Chip initialication move to "set driver" operation
* aw3644_init();
*/
return 0;
}
static int aw3644_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct aw3644_chip_data *chip;
struct aw3644_platform_data *pdata = client->dev.platform_data;
int err;
pr_info("%s start.\n", __func__);
/* check i2c */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
pr_info("Failed to check i2c functionality.\n");
err = -ENODEV;
goto err_out;
}
/* init chip private data */
chip = kzalloc(sizeof(struct aw3644_chip_data), GFP_KERNEL);
if (!chip) {
err = -ENOMEM;
goto err_out;
}
chip->client = client;
/* init platform data */
if (!pdata) {
pdata = kzalloc(sizeof(struct aw3644_platform_data),
GFP_KERNEL);
chip->no_pdata = 1;
}
chip->pdata = pdata;
i2c_set_clientdata(client, chip);
AW3644_i2c_client = client;
/* init mutex and spinlock */
mutex_init(&chip->lock);
/* init work queue */
INIT_WORK(&aw3644_work_ch1, aw3644_work_disable_ch1);
INIT_WORK(&aw3644_work_ch2, aw3644_work_disable_ch2);
/* init timer */
hrtimer_init(&aw3644_timer_ch1, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
aw3644_timer_ch1.function = aw3644_timer_func_ch1;
hrtimer_init(&aw3644_timer_ch2, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
aw3644_timer_ch2.function = aw3644_timer_func_ch2;
aw3644_timeout_ms[AW3644_CHANNEL_CH1] = 100;
aw3644_timeout_ms[AW3644_CHANNEL_CH2] = 100;
/* init chip hw */
aw3644_chip_init(chip);
/* register flashlight operations */
if (flashlight_dev_register(AW3644_NAME, &aw3644_ops)) {
err = -EFAULT;
goto err_free;
}
/* clear usage count */
use_count = 0;
pr_info("Probe done.\n");
return 0;
err_free:
kfree(chip->pdata);
i2c_set_clientdata(client, NULL);
kfree(chip);
err_out:
return err;
}
static int aw3644_i2c_remove(struct i2c_client *client)
{
struct aw3644_chip_data *chip = i2c_get_clientdata(client);
pr_info("Remove start.\n");
/* flush work queue */
flush_work(&aw3644_work_ch1);
flush_work(&aw3644_work_ch2);
/* unregister flashlight operations */
flashlight_dev_unregister(AW3644_NAME);
/* free resource */
if (chip->no_pdata)
kfree(chip->pdata);
kfree(chip);
pr_info("Remove done.\n");
return 0;
}
static const struct i2c_device_id aw3644_i2c_id[] = {
{AW3644_NAME, 0},
{}
};
MODULE_DEVICE_TABLE(i2c, aw3644_i2c_id);
#ifdef CONFIG_OF
static const struct of_device_id aw3644_i2c_of_match[] = {
{.compatible = AW3644_DTNAME_I2C},
{},
};
MODULE_DEVICE_TABLE(of, aw3644_i2c_of_match);
#endif
static struct i2c_driver aw3644_i2c_driver = {
.driver = {
.name = AW3644_NAME,
#ifdef CONFIG_OF
.of_match_table = aw3644_i2c_of_match,
#endif
},
.probe = aw3644_i2c_probe,
.remove = aw3644_i2c_remove,
.id_table = aw3644_i2c_id,
};
/******************************************************************************
* Platform device and driver
*****************************************************************************/
static int aw3644_probe(struct platform_device *dev)
{
pr_info("aw3644_platform_probe start.\n");
/* init pinctrl */
if (aw3644_pinctrl_init(dev)) {
pr_debug("Failed to init pinctrl.\n");
return -1;
}
if (i2c_add_driver(&aw3644_i2c_driver)) {
pr_debug("Failed to add i2c driver.\n");
return -1;
}
pr_info("%s done.\n", __func__);
return 0;
}
static int aw3644_remove(struct platform_device *dev)
{
pr_debug("Remove start.\n");
i2c_del_driver(&aw3644_i2c_driver);
pr_debug("Remove done.\n");
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id aw3644_of_match[] = {
{.compatible = AW3644_DTNAME},
{},
};
MODULE_DEVICE_TABLE(of, aw3644_of_match);
#else
static struct platform_device aw3644_platform_device = {
.name = AW3644_NAME,
.id = 0,
.dev = {}
};
MODULE_DEVICE_TABLE(platform, aw3644_platform_device);
#endif
static struct platform_driver aw3644_platform_driver = {
.probe = aw3644_probe,
.remove = aw3644_remove,
.driver = {
.name = AW3644_NAME,
.owner = THIS_MODULE,
#ifdef CONFIG_OF
.of_match_table = aw3644_of_match,
#endif
},
};
static int __init flashlight_aw3644_init(void)
{
int ret;
pr_info("flashlight_aw3644_initInit start.\n");
#ifndef CONFIG_OF
ret = platform_device_register(&aw3644_platform_device);
if (ret) {
pr_info("Failed to register platform device\n");
return ret;
}
#endif
ret = platform_driver_register(&aw3644_platform_driver);
if (ret) {
pr_info("Failed to register platform driver\n");
return ret;
}
pr_debug("Init done.\n");
return 0;
}
static void __exit flashlight_aw3644_exit(void)
{
pr_debug("Exit start.\n");
platform_driver_unregister(&aw3644_platform_driver);
pr_debug("Exit done.\n");
}
late_initcall(flashlight_aw3644_init);
module_exit(flashlight_aw3644_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Simon Wang <Simon-TCH.Wang@mediatek.com>");
MODULE_DESCRIPTION("MTK Flashlight AW3644 Driver");
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