一 原理
led的一端接isink或者普通gpio另一端接電源，當gpio爲高電平時三極管導通接地led亮。isink輸出0，led亮
二 代碼配置
配置mode ，data
接gpio需要在代碼中實現（黃色部分）
/*
* Copyright (C) 2015 MediaTek Inc.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/leds.h>
#include <linux/of.h>
/* #include <linux/leds-mt65xx.h> */
#include <linux/workqueue.h>
#include <linux/wakelock.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/of_platform.h>
#include <linux/pinctrl/consumer.h>
#include <ddp_aal.h>
/* #include <linux/aee.h> */
#include <ddp_gamma.h>
#include <mt-plat/mtk_pwm.h>
#include <mt-plat/upmu_common.h>
#include "mtk_leds_sw.h"
#include "mtk_leds_hal.h"
#include "ddp_pwm.h"
#include "mtkfb.h"
#define MET_USER_EVENT_SUPPORT
#ifdef MET_USER_EVENT_SUPPORT
#include <mt-plat/met_drv.h>
#endif
struct platform_device *led_dev;
struct pinctrl *led_pinctrl;
struct device_node *leds_node;
struct pinctrl_state *pinctrl_led1_low;
struct pinctrl_state *pinctrl_led1_high;
struct pinctrl_state *pinctrl_led2_low;
struct pinctrl_state *pinctrl_led2_high;
/* for LED&Backlight bringup, define the dummy API */
#ifndef CONFIG_MTK_PMIC_NEW_ARCH
u16 pmic_set_register_value(u32 flagname, u32 val)
{
return 0;
}
#endif
/* #ifndef CONFIG_BACKLIGHT_SUPPORT_LM3697 */
#if 0
static int mtkfb_set_backlight_level(unsigned int level)
{
return 0;
}
#endif /* CONFIG_BACKLIGHT_SUPPORT_LM3697 */
#ifndef CONFIG_MTK_PWM
s32 pwm_set_spec_config(struct pwm_spec_config *conf)
{
return 0;
}
void mt_pwm_disable(u32 pwm_no, u8 pmic_pad)
{
}
#endif
static DEFINE_MUTEX(leds_mutex);
static DEFINE_MUTEX(leds_pmic_mutex);
/****************************************************************************
* variables
***************************************************************************/
/* struct cust_mt65xx_led* bl_setting_hal = NULL; */
static unsigned int bl_brightness_hal = 102;
static unsigned int bl_duty_hal = 21;
static unsigned int bl_div_hal = CLK_DIV1;
static unsigned int bl_frequency_hal = 32000;
/* for button led don't do ISINK disable first time */
#ifdef CONFIG_MTK_PMIC_CHIP_MT6356
static int button_flag_isink0;
#endif
static int button_flag_isink1;
struct wake_lock leds_suspend_lock;
char *leds_name[MT65XX_LED_TYPE_TOTAL] = {
"red",
"green",
"blue",
"jogball-backlight",
"keyboard-backlight",
"button-backlight",
"lcd-backlight",
};
struct cust_mt65xx_led *pled_dtsi;
/****************************************************************************
* DEBUG MACROS
***************************************************************************/
static int debug_enable_led_hal = 1;
#define LEDS_DEBUG(format, args...) do { \
if (debug_enable_led_hal) { \
pr_debug("[LED]"format, ##args);\
} \
} while (0)
/*****************PWM *************************************************/
#define PWM_DIV_NUM 8
static int time_array_hal[PWM_DIV_NUM] = {
256, 512, 1024, 2048, 4096, 8192, 16384, 32768 };
static unsigned int div_array_hal[PWM_DIV_NUM] = {
1, 2, 4, 8, 16, 32, 64, 128 };
static unsigned int backlight_PWM_div_hal = CLK_DIV1; /* this para come from cust_leds. */
/****************************************************************************
* func:return global variables
***************************************************************************/
static unsigned long long current_time, last_time;
static int count;
static char buffer[4096] = "[BL] Set Backlight directly ";
static void backlight_debug_log(int level, int mappingLevel)
{
unsigned long cur_time_mod = 0;
unsigned long long cur_time_display = 0;
current_time = sched_clock();
cur_time_display = current_time;
cur_time_mod = do_div(cur_time_display, 1000000000);
sprintf(buffer + strlen(buffer), "T:%lld.%ld,L:%d map:%d ",
cur_time_display, cur_time_mod/1000000, level, mappingLevel);
count++;
if (level == 0 || count >= 5 || (current_time - last_time) > 1000000000) {
LEDS_DEBUG("%s", buffer);
count = 0;
buffer[strlen("[BL] Set Backlight directly ")] = '\0';
}
last_time = sched_clock();
}
void mt_leds_wake_lock_init(void)
{
wake_lock_init(&leds_suspend_lock, WAKE_LOCK_SUSPEND, "leds wakelock");
}
unsigned int mt_get_bl_brightness(void)
{
return bl_brightness_hal;
}
unsigned int mt_get_bl_duty(void)
{
return bl_duty_hal;
}
unsigned int mt_get_bl_div(void)
{
return bl_div_hal;
}
unsigned int mt_get_bl_frequency(void)
{
return bl_frequency_hal;
}
unsigned int *mt_get_div_array(void)
{
return &div_array_hal[0];
}
void mt_set_bl_duty(unsigned int level)
{
bl_duty_hal = level;
}
void mt_set_bl_div(unsigned int div)
{
bl_div_hal = div;
}
void mt_set_bl_frequency(unsigned int freq)
{
bl_frequency_hal = freq;
}
static int charge_led_get_gpio_pinctrl(void)
{
int ret = 0;
leds_node = of_find_compatible_node(NULL, NULL, "mediatek,mt6739_leds");
if (leds_node == NULL) {
pr_err("get mt6739_leds node failed\n");
ret = PTR_ERR(leds_node);
}
led_dev = of_find_device_by_node(leds_node);
led_pinctrl = devm_pinctrl_get(&led_dev->dev);
if (IS_ERR(led_pinctrl)) {
dev_err(&led_dev->dev, "Cannot find led_pinctrl!\n");
ret = PTR_ERR(led_pinctrl);
}
pinctrl_led1_low = pinctrl_lookup_state(led_pinctrl, "pinctrl_led1_low");
if (IS_ERR(pinctrl_led1_low)) {
pr_err("Cannot find led_pinctrl pinctrl_led1_low\n");
ret = PTR_ERR(pinctrl_led1_low);
}
pinctrl_led1_high = pinctrl_lookup_state(led_pinctrl, "pinctrl_led1_high");
if (IS_ERR(pinctrl_led1_high)) {
pr_err("Cannot find led_pinctrl pinctrl_led1_high\n");
ret = PTR_ERR(pinctrl_led1_high);
}
pinctrl_led2_low = pinctrl_lookup_state(led_pinctrl, "pinctrl_led2_low");
if (IS_ERR(pinctrl_led2_low)) {
pr_err("Cannot find led_pinctrl pinctrl_led2_low\n");
ret = PTR_ERR(pinctrl_led2_low);
}
pinctrl_led2_high = pinctrl_lookup_state(led_pinctrl, "pinctrl_led2_high");
if (IS_ERR(pinctrl_led2_high)) {
pr_err("Cannot find led_pinctrl pinctrl_led2_high\n");
ret = PTR_ERR(pinctrl_led2_high);
}
return ret;
}
int cust_set_charge_led_by_gpio(long data, u32 level)
{
pr_err("%s:line=%d,level=%d\n",__func__,__LINE__,level);
if(charge_led_get_gpio_pinctrl()){
return -1;
}
if (255 == level){
if(data == 1)
pinctrl_select_state(led_pinctrl, pinctrl_led1_high);
else if(data == 2)
pinctrl_select_state(led_pinctrl, pinctrl_led2_high);
}
else{
if(data == 1)
pinctrl_select_state(led_pinctrl, pinctrl_led1_low);
else if(data == 2)
pinctrl_select_state(led_pinctrl, pinctrl_led2_low);
}
return 0;
}
struct cust_mt65xx_led *get_cust_led_dtsi(void)
{
struct device_node *led_node = NULL;
bool isSupportDTS = false;
int i, ret;
int mode, data;
int pwm_config[5] = { 0 };
/*LEDS_DEBUG("get_cust_led_dtsi: get the leds info from device tree\n");*/
if (pled_dtsi == NULL) {
/* this can allocat an new struct array */
pled_dtsi = kmalloc(MT65XX_LED_TYPE_TOTAL *
sizeof(struct
cust_mt65xx_led),
GFP_KERNEL);
if (pled_dtsi == NULL) {
LEDS_DEBUG("get_cust_led_dtsi kmalloc fail\n");
goto out;
}
for (i = 0; i < MT65XX_LED_TYPE_TOTAL; i++) {
char node_name[32] = "mediatek,";
if (strlen(node_name) + strlen(leds_name[i]) + 1 > sizeof(node_name)) {
LEDS_DEBUG("buffer for %s%s not enough\n", node_name, leds_name[i]);
pled_dtsi[i].mode = 0;
pled_dtsi[i].data = -1;
continue;
}
pled_dtsi[i].name = leds_name[i];
led_node =
of_find_compatible_node(NULL, NULL,
strncat(node_name,
leds_name[i], sizeof(node_name) - strlen(node_name) - 1));
if (!led_node) {
LEDS_DEBUG("Cannot find LED node from dts\n");
pled_dtsi[i].mode = 0;
pled_dtsi[i].data = -1;
} else {
isSupportDTS = true;
ret =
of_property_read_u32(led_node, "led_mode",
&mode);
if (!ret) {
pled_dtsi[i].mode = mode;
LEDS_DEBUG
("The %s's led mode is : %d\n",
pled_dtsi[i].name,
pled_dtsi[i].mode);
} else {
LEDS_DEBUG
("led dts can not get led mode");
pled_dtsi[i].mode = 0;
}
ret =
of_property_read_u32(led_node, "data",
&data);
if (!ret) {
pled_dtsi[i].data = data;
LEDS_DEBUG
("The %s's led data is : %ld\n",
pled_dtsi[i].name,
pled_dtsi[i].data);
} else {
LEDS_DEBUG
("led dts can not get led data");
pled_dtsi[i].data = -1;
}
ret =
of_property_read_u32_array(led_node,
"pwm_config",
pwm_config,
ARRAY_SIZE
(pwm_config));
if (!ret) {
LEDS_DEBUG
("The %s's pwm config data is %d %d %d %d %d\n",
pled_dtsi[i].name, pwm_config[0],
pwm_config[1], pwm_config[2],
pwm_config[3], pwm_config[4]);
pled_dtsi[i].config_data.clock_source =
pwm_config[0];
pled_dtsi[i].config_data.div =
pwm_config[1];
pled_dtsi[i].config_data.low_duration =
pwm_config[2];
pled_dtsi[i].config_data.High_duration =
pwm_config[3];
pled_dtsi[i].config_data.pmic_pad =
pwm_config[4];
} else
LEDS_DEBUG
("led dts can not get pwm config data.\n");
switch (pled_dtsi[i].mode) {
case MT65XX_LED_MODE_CUST_LCM:
#if defined(CONFIG_BACKLIGHT_SUPPORT_LM3697)
pled_dtsi[i].data =
(long)chargepump_set_backlight_level;
LEDS_DEBUG
("backlight set by chargepump_set_backlight_level\n");
#else
pled_dtsi[i].data =
(long)mtkfb_set_backlight_level;
#endif /* CONFIG_BACKLIGHT_SUPPORT_LM3697 */
LEDS_DEBUG
("kernel:the backlight hw mode is LCM.\n");
break;
case MT65XX_LED_MODE_CUST_BLS_PWM:
pled_dtsi[i].data =
(long)disp_bls_set_backlight;
LEDS_DEBUG
("kernel:the backlight hw mode is BLS.\n");
break;
default:
break;
}
}
}
if (!isSupportDTS) {
kfree(pled_dtsi);
pled_dtsi = NULL;
}
}
out:
return pled_dtsi;
}
struct cust_mt65xx_led *mt_get_cust_led_list(void)
{
struct cust_mt65xx_led *cust_led_list = get_cust_led_dtsi();
return cust_led_list;
}
/****************************************************************************
* internal functions
***************************************************************************/
static int brightness_mapto64(int level)
{
if (level < 30)
return (level >> 1) + 7;
else if (level <= 120)
return (level >> 2) + 14;
else if (level <= 160)
return level / 5 + 20;
else
return (level >> 3) + 33;
}
static int find_time_index(int time)
{
int index = 0;
while (index < 8) {
if (time < time_array_hal[index])
return index;
index++;
}
return PWM_DIV_NUM - 1;
}
int mt_led_set_pwm(int pwm_num, struct nled_setting *led)
{
struct pwm_spec_config pwm_setting;
int time_index = 0;
memset(&pwm_setting, 0, sizeof(struct pwm_spec_config));
pwm_setting.pwm_no = pwm_num;
pwm_setting.mode = PWM_MODE_OLD;
LEDS_DEBUG("led_set_pwm: mode=%d,pwm_no=%d\n", led->nled_mode,
pwm_num);
/* We won't choose 32K to be the clock src of old mode because of system performance. */
/* The setting here will be clock src = 26MHz, CLKSEL = 26M/1625 (i.e. 16K) */
pwm_setting.clk_src = PWM_CLK_OLD_MODE_32K;
pwm_setting.pmic_pad = 0;
switch (led->nled_mode) {
/* Actually, the setting still can not to turn off NLED. We should disable PWM to turn off NLED. */
case NLED_OFF:
pwm_setting.PWM_MODE_OLD_REGS.THRESH = 0;
pwm_setting.clk_div = CLK_DIV1;
pwm_setting.PWM_MODE_OLD_REGS.DATA_WIDTH = 100 / 2;
break;
case NLED_ON:
pwm_setting.PWM_MODE_OLD_REGS.THRESH = 30 / 2;
pwm_setting.clk_div = CLK_DIV1;
pwm_setting.PWM_MODE_OLD_REGS.DATA_WIDTH = 100 / 2;
break;
case NLED_BLINK:
LEDS_DEBUG("LED blink on time = %d offtime = %d\n",
led->blink_on_time, led->blink_off_time);
time_index =
find_time_index(led->blink_on_time + led->blink_off_time);
LEDS_DEBUG("LED div is %d\n", time_index);
pwm_setting.clk_div = time_index;
pwm_setting.PWM_MODE_OLD_REGS.DATA_WIDTH =
(led->blink_on_time +
led->blink_off_time) * MIN_FRE_OLD_PWM /
div_array_hal[time_index];
pwm_setting.PWM_MODE_OLD_REGS.THRESH =
(led->blink_on_time * 100) / (led->blink_on_time +
led->blink_off_time);
break;
default:
LEDS_DEBUG("Invalid nled mode\n");
return -1;
}
pwm_setting.PWM_MODE_FIFO_REGS.IDLE_VALUE = 0;
pwm_setting.PWM_MODE_FIFO_REGS.GUARD_VALUE = 0;
pwm_setting.PWM_MODE_FIFO_REGS.GDURATION = 0;
pwm_setting.PWM_MODE_FIFO_REGS.WAVE_NUM = 0;
pwm_set_spec_config(&pwm_setting);
return 0;
}
/************************ led breath function*****************************/
/*************************************************************************
* func is to swtich to breath mode from PWM mode of ISINK
* para: enable: 1 : breath mode; 0: PWM mode;
*************************************************************************/
#if 0
static int led_switch_breath_pmic(enum mt65xx_led_pmic pmic_type,
struct nled_setting *led, int enable)
{
/* int time_index = 0; */
/* int duty = 0; */
LEDS_DEBUG("led_blink_pmic: pmic_type=%d\n", pmic_type);
if ((pmic_type != MT65XX_LED_PMIC_NLED_ISINK0
&& pmic_type != MT65XX_LED_PMIC_NLED_ISINK1)
|| led->nled_mode != NLED_BLINK) {
return -1;
}
if (enable == 1) {
switch (pmic_type) {
case MT65XX_LED_PMIC_NLED_ISINK0:
pmic_set_register_value(PMIC_ISINK_CH0_MODE,
ISINK_BREATH_MODE);
pmic_set_register_value(PMIC_ISINK_CH0_STEP, ISINK_3);
pmic_set_register_value(PMIC_ISINK_BREATH0_TR1_SEL,
0x04);
pmic_set_register_value(PMIC_ISINK_BREATH0_TR2_SEL,
0x04);
pmic_set_register_value(PMIC_ISINK_BREATH0_TF1_SEL,
0x04);
pmic_set_register_value(PMIC_ISINK_BREATH0_TF2_SEL,
0x04);
pmic_set_register_value(PMIC_ISINK_BREATH0_TON_SEL,
0x02);
pmic_set_register_value(PMIC_ISINK_BREATH0_TOFF_SEL,
0x03);
pmic_set_register_value(PMIC_ISINK_DIM0_DUTY, 15);
pmic_set_register_value(PMIC_ISINK_DIM0_FSEL, 11);
/* pmic_set_register_value(PMIC_ISINK_CH0_EN,NLED_ON); */
break;
case MT65XX_LED_PMIC_NLED_ISINK1:
pmic_set_register_value(PMIC_ISINK_CH1_MODE,
ISINK_BREATH_MODE);
pmic_set_register_value(PMIC_ISINK_CH1_STEP, ISINK_3);
pmic_set_register_value(PMIC_ISINK_BREATH1_TR1_SEL,
0x04);
pmic_set_register_value(PMIC_ISINK_BREATH1_TR2_SEL,
0x04);
pmic_set_register_value(PMIC_ISINK_BREATH1_TF1_SEL,
0x04);
pmic_set_register_value(PMIC_ISINK_BREATH1_TF2_SEL,
0x04);
pmic_set_register_value(PMIC_ISINK_BREATH1_TON_SEL,
0x02);
pmic_set_register_value(PMIC_ISINK_BREATH1_TOFF_SEL,
0x03);
pmic_set_register_value(PMIC_ISINK_DIM1_DUTY, 15);
pmic_set_register_value(PMIC_ISINK_DIM1_FSEL, 11);
/* pmic_set_register_value(PMIC_ISINK_CH1_EN,NLED_ON); */
break;
default:
break;
}
} else {
switch (pmic_type) {
case MT65XX_LED_PMIC_NLED_ISINK0:
pmic_set_register_value(PMIC_ISINK_CH3_MODE,
ISINK_PWM_MODE);
break;
case MT65XX_LED_PMIC_NLED_ISINK0:
pmic_set_register_value(PMIC_ISINK_CH3_MODE,
ISINK_PWM_MODE);
break;
case MT65XX_LED_PMIC_NLED_ISINK0:
pmic_set_register_value(PMIC_ISINK_CH3_MODE,
ISINK_PWM_MODE);
break;
case MT65XX_LED_PMIC_NLED_ISINK0:
pmic_set_register_value(PMIC_ISINK_CH3_MODE,
ISINK_PWM_MODE);
break;
default:
break;
}
}
return 0;
}
#endif
#define PMIC_PERIOD_NUM 8
int pmic_period_array[] = { 2, 4, 6, 8, 10, 12, 20, 60 };
int pmic_freqsel_array[] = { 0, 1, 2, 3, 4, 5, 9, 28 };
static int find_time_index_pmic(int time_ms)
{
int i;
for (i = 0; i < PMIC_PERIOD_NUM; i++) {
if (time_ms <= pmic_period_array[i])
return i;
}
return PMIC_PERIOD_NUM - 1;
}
int mt_led_blink_pmic(enum mt65xx_led_pmic pmic_type, struct nled_setting *led)
{
int time_index = 0;
int duty = 0;
LEDS_DEBUG("led_blink_pmic: pmic_type=%d\n", pmic_type);
if (led->nled_mode != NLED_BLINK)
return -1;
LEDS_DEBUG("LED blink on time = %d offtime = %d\n",
led->blink_on_time, led->blink_off_time);
time_index =
find_time_index_pmic(led->blink_on_time + led->blink_off_time);
LEDS_DEBUG("LED index is %d freqsel=%d\n", time_index,
pmic_freqsel_array[time_index]);
duty = 256 * led->blink_on_time / (led->blink_on_time +
led->blink_off_time);
if (pmic_type > MT65XX_LED_PMIC_NLED_ISINK_MIN && pmic_type < MT65XX_LED_PMIC_NLED_ISINK_MAX)
pmic_set_register_value(PMIC_RG_DRV_128K_CK_PDN, 0x0); /* Disable power down */
switch (pmic_type) {
#ifdef CONFIG_MTK_PMIC_CHIP_MT6356
case MT65XX_LED_PMIC_NLED_ISINK0:
pmic_set_register_value(PMIC_ISINK_CH0_EN, NLED_OFF);
pmic_set_register_value(PMIC_RG_DRV_ISINK0_CK_PDN, 0);
pmic_set_register_value(PMIC_ISINK_CH0_MODE, ISINK_PWM_MODE);
pmic_set_register_value(PMIC_ISINK_CH0_STEP, ISINK_3); /* 16mA */
pmic_set_register_value(PMIC_ISINK_DIM0_DUTY, duty);
pmic_set_register_value(PMIC_ISINK_DIM0_FSEL, pmic_freqsel_array[time_index]);
pmic_set_register_value(PMIC_ISINK_CH0_BIAS_EN, NLED_ON);
pmic_set_register_value(PMIC_ISINK_CHOP0_EN, NLED_ON);
pmic_set_register_value(PMIC_ISINK_CH0_EN, NLED_ON);
break;
#endif
case MT65XX_LED_PMIC_NLED_ISINK1:
pmic_set_register_value(PMIC_ISINK_CH1_EN, NLED_OFF);
pmic_set_register_value(PMIC_RG_DRV_ISINK1_CK_PDN, 0);
pmic_set_register_value(PMIC_ISINK_CH1_MODE, ISINK_PWM_MODE);
pmic_set_register_value(PMIC_ISINK_CH1_STEP, ISINK_3); /* 16mA */
pmic_set_register_value(PMIC_ISINK_DIM1_DUTY, duty);
pmic_set_register_value(PMIC_ISINK_DIM1_FSEL, pmic_freqsel_array[time_index]);
pmic_set_register_value(PMIC_ISINK_CH1_BIAS_EN, NLED_ON);
pmic_set_register_value(PMIC_ISINK_CHOP1_EN, NLED_ON);
pmic_set_register_value(PMIC_ISINK_CH1_EN, NLED_ON);
break;
default:
LEDS_DEBUG("[LEDS] pmic_type %d is not handled\n", pmic_type);
break;
}
return 0;
}
int mt_backlight_set_pwm(int pwm_num, u32 level, u32 div,
struct PWM_config *config_data)
{
struct pwm_spec_config pwm_setting;
unsigned int BacklightLevelSupport =
Cust_GetBacklightLevelSupport_byPWM();
pwm_setting.pwm_no = pwm_num;
if (BacklightLevelSupport == BACKLIGHT_LEVEL_PWM_256_SUPPORT)
pwm_setting.mode = PWM_MODE_OLD;
else
pwm_setting.mode = PWM_MODE_FIFO; /* New mode fifo and periodical mode */
pwm_setting.pmic_pad = config_data->pmic_pad;
if (config_data->div) {
pwm_setting.clk_div = config_data->div;
backlight_PWM_div_hal = config_data->div;
} else
pwm_setting.clk_div = div;
if (BacklightLevelSupport == BACKLIGHT_LEVEL_PWM_256_SUPPORT) {
/* PWM_CLK_OLD_MODE_32K is block/1625 = 26M/1625 = 16KHz @ MT6571 */
if (config_data->clock_source)
pwm_setting.clk_src = PWM_CLK_OLD_MODE_BLOCK;
else
pwm_setting.clk_src = PWM_CLK_OLD_MODE_32K;
pwm_setting.PWM_MODE_OLD_REGS.IDLE_VALUE = 0;
pwm_setting.PWM_MODE_OLD_REGS.GUARD_VALUE = 0;
pwm_setting.PWM_MODE_OLD_REGS.GDURATION = 0;
pwm_setting.PWM_MODE_OLD_REGS.WAVE_NUM = 0;
pwm_setting.PWM_MODE_OLD_REGS.DATA_WIDTH = 255; /* 256 level */
pwm_setting.PWM_MODE_OLD_REGS.THRESH = level;
LEDS_DEBUG("[LEDS][%d]backlight_set_pwm:duty is %d/%d\n",
BacklightLevelSupport, level,
pwm_setting.PWM_MODE_OLD_REGS.DATA_WIDTH);
LEDS_DEBUG("[LEDS][%d]backlight_set_pwm:clk_src/div is %d%d\n",
BacklightLevelSupport, pwm_setting.clk_src,
pwm_setting.clk_div);
if (level > 0 && level < 256) {
pwm_set_spec_config(&pwm_setting);
LEDS_DEBUG
("[LEDS][%d]backlight_set_pwm: old mode: thres/data_width is %d/%d\n",
BacklightLevelSupport,
pwm_setting.PWM_MODE_OLD_REGS.THRESH,
pwm_setting.PWM_MODE_OLD_REGS.DATA_WIDTH);
} else {
LEDS_DEBUG("[LEDS][%d]Error level in backlight\n",
BacklightLevelSupport);
mt_pwm_disable(pwm_setting.pwm_no,
config_data->pmic_pad);
}
return 0;
} else {
if (config_data->clock_source) {
pwm_setting.clk_src = PWM_CLK_NEW_MODE_BLOCK;
} else {
pwm_setting.clk_src =
PWM_CLK_NEW_MODE_BLOCK_DIV_BY_1625;
}
if (config_data->High_duration && config_data->low_duration) {
pwm_setting.PWM_MODE_FIFO_REGS.HDURATION =
config_data->High_duration;
pwm_setting.PWM_MODE_FIFO_REGS.LDURATION =
pwm_setting.PWM_MODE_FIFO_REGS.HDURATION;
} else {
pwm_setting.PWM_MODE_FIFO_REGS.HDURATION = 4;
pwm_setting.PWM_MODE_FIFO_REGS.LDURATION = 4;
}
pwm_setting.PWM_MODE_FIFO_REGS.IDLE_VALUE = 0;
pwm_setting.PWM_MODE_FIFO_REGS.GUARD_VALUE = 0;
pwm_setting.PWM_MODE_FIFO_REGS.STOP_BITPOS_VALUE = 31;
pwm_setting.PWM_MODE_FIFO_REGS.GDURATION =
(pwm_setting.PWM_MODE_FIFO_REGS.HDURATION + 1) * 32 - 1;
pwm_setting.PWM_MODE_FIFO_REGS.WAVE_NUM = 0;
LEDS_DEBUG("[LEDS]backlight_set_pwm:duty is %d\n", level);
LEDS_DEBUG
("[LEDS]backlight_set_pwm:clk_src/div/high/low is %d%d%d%d\n",
pwm_setting.clk_src, pwm_setting.clk_div,
pwm_setting.PWM_MODE_FIFO_REGS.HDURATION,
pwm_setting.PWM_MODE_FIFO_REGS.LDURATION);
if (level > 0 && level <= 32) {
pwm_setting.PWM_MODE_FIFO_REGS.GUARD_VALUE = 0;
pwm_setting.PWM_MODE_FIFO_REGS.SEND_DATA0 =
(1 << level) - 1;
pwm_set_spec_config(&pwm_setting);
} else if (level > 32 && level <= 64) {
pwm_setting.PWM_MODE_FIFO_REGS.GUARD_VALUE = 1;
level -= 32;
pwm_setting.PWM_MODE_FIFO_REGS.SEND_DATA0 =
(1 << level) - 1;
pwm_set_spec_config(&pwm_setting);
} else {
LEDS_DEBUG("[LEDS]Error level in backlight\n");
mt_pwm_disable(pwm_setting.pwm_no,
config_data->pmic_pad);
}
return 0;
}
}
void mt_led_pwm_disable(int pwm_num)
{
struct cust_mt65xx_led *cust_led_list = get_cust_led_dtsi();
mt_pwm_disable(pwm_num, cust_led_list->config_data.pmic_pad);
}
void mt_backlight_set_pwm_duty(int pwm_num, u32 level, u32 div,
struct PWM_config *config_data)
{
mt_backlight_set_pwm(pwm_num, level, div, config_data);
}
void mt_backlight_set_pwm_div(int pwm_num, u32 level, u32 div,
struct PWM_config *config_data)
{
mt_backlight_set_pwm(pwm_num, level, div, config_data);
}
void mt_backlight_get_pwm_fsel(unsigned int bl_div, unsigned int *bl_frequency)
{
}
void mt_store_pwm_register(unsigned int addr, unsigned int value)
{
}
unsigned int mt_show_pwm_register(unsigned int addr)
{
return 0;
}
int mt_brightness_set_pmic(enum mt65xx_led_pmic pmic_type, u32 level, u32 div)
{
static bool first_time = true;
LEDS_DEBUG("PMIC#%d:%d\n", pmic_type, level);
mutex_lock(&leds_pmic_mutex);
if (pmic_type == MT65XX_LED_PMIC_NLED_ISINK0) {
#ifdef CONFIG_MTK_PMIC_CHIP_MT6356
/* button flag ==0, means this ISINK is not for button backlight */
if ((button_flag_isink0 == 0) && (first_time == true)) {
/* sw workround for sync leds status */
if (button_flag_isink1 == 0)
pmic_set_register_value(PMIC_ISINK_CH1_EN, NLED_OFF);
first_time = false;
}
pmic_set_register_value(PMIC_RG_DRV_128K_CK_PDN, 0x0); /* Disable power down */
pmic_set_register_value(PMIC_RG_DRV_ISINK0_CK_PDN, 0);
pmic_set_register_value(PMIC_ISINK_CH0_MODE, ISINK_PWM_MODE);
pmic_set_register_value(PMIC_ISINK_CH0_STEP, ISINK_3); /* 16mA */
pmic_set_register_value(PMIC_ISINK_DIM0_DUTY, 255);
pmic_set_register_value(PMIC_ISINK_DIM0_FSEL, ISINK_128K_500HZ); /* 1KHz */
pmic_set_register_value(PMIC_ISINK_CH0_BIAS_EN, NLED_ON);
pmic_set_register_value(PMIC_ISINK_CHOP0_EN, NLED_ON);
if (level)
pmic_set_register_value(PMIC_ISINK_CH0_EN, NLED_ON);
else
pmic_set_register_value(PMIC_ISINK_CH0_EN, NLED_OFF);
mutex_unlock(&leds_pmic_mutex);
return 0;
#endif
} else if (pmic_type == MT65XX_LED_PMIC_NLED_ISINK1) {
/* button flag ==0, means this ISINK is not for button backlight */
if ((button_flag_isink1 == 0) && (first_time == true)) {
/* sw workround for sync leds status */
#ifdef CONFIG_MTK_PMIC_CHIP_MT6356
if (button_flag_isink0 == 0)
pmic_set_register_value(PMIC_ISINK_CH0_EN, NLED_OFF);
#endif
first_time = false;
}
pmic_set_register_value(PMIC_RG_DRV_128K_CK_PDN, 0x0); /* Disable power down */
pmic_set_register_value(PMIC_RG_DRV_ISINK1_CK_PDN, 0);
pmic_set_register_value(PMIC_ISINK_CH1_MODE, ISINK_PWM_MODE);
pmic_set_register_value(PMIC_ISINK_CH1_STEP, ISINK_3); /* 16mA */
pmic_set_register_value(PMIC_ISINK_DIM1_DUTY, 255);
pmic_set_register_value(PMIC_ISINK_DIM1_FSEL, ISINK_128K_500HZ); /* 1KHz */
pmic_set_register_value(PMIC_ISINK_CH1_BIAS_EN, NLED_ON);
pmic_set_register_value(PMIC_ISINK_CHOP1_EN, NLED_ON);
if (level)
pmic_set_register_value(PMIC_ISINK_CH1_EN, NLED_ON);
else
pmic_set_register_value(PMIC_ISINK_CH1_EN, NLED_OFF);
mutex_unlock(&leds_pmic_mutex);
return 0;
}
mutex_unlock(&leds_pmic_mutex);
return -1;
}
int mt_brightness_set_pmic_duty_store(u32 level, u32 div)
{
return -1;
}
int mt_mt65xx_led_set_cust(struct cust_mt65xx_led *cust, int level)
{
struct nled_setting led_tmp_setting = { 0, 0, 0 };
int tmp_level = level;
static bool button_flag;
unsigned int BacklightLevelSupport =
Cust_GetBacklightLevelSupport_byPWM();
switch (cust->mode) {
case MT65XX_LED_MODE_PWM:
if (strcmp(cust->name, "lcd-backlight") == 0) {
bl_brightness_hal = level;
if (level == 0) {
mt_pwm_disable(cust->data,
cust->config_data.pmic_pad);
} else {
if (BacklightLevelSupport ==
BACKLIGHT_LEVEL_PWM_256_SUPPORT)
level = brightness_mapping(tmp_level);
else
level = brightness_mapto64(tmp_level);
mt_backlight_set_pwm(cust->data, level,
bl_div_hal,
&cust->config_data);
}
bl_duty_hal = level;
} else {
if (level == 0) {
led_tmp_setting.nled_mode = NLED_OFF;
mt_led_set_pwm(cust->data, &led_tmp_setting);
mt_pwm_disable(cust->data,
cust->config_data.pmic_pad);
} else {
led_tmp_setting.nled_mode = NLED_ON;
mt_led_set_pwm(cust->data, &led_tmp_setting);
}
}
return 1;
case MT65XX_LED_MODE_GPIO:
LEDS_DEBUG("brightness_set_cust:go GPIO mode!!!!!\n");
//return ((cust_set_brightness) (cust->data)) (level);
return cust_set_charge_led_by_gpio(cust->data, level);
case MT65XX_LED_MODE_PMIC:
/* for button baclight used SINK channel, when set button ISINK,
* don't do disable other ISINK channel
*/
if ((strcmp(cust->name, "button-backlight") == 0)) {
if (button_flag == false) {
switch (cust->data) {
#ifdef CONFIG_MTK_PMIC_CHIP_MT6356
case MT65XX_LED_PMIC_NLED_ISINK0:
button_flag_isink0 = 1;
break;
#endif
case MT65XX_LED_PMIC_NLED_ISINK1:
button_flag_isink1 = 1;
break;
default:
break;
}
button_flag = true;
}
}
return mt_brightness_set_pmic(cust->data, level, bl_div_hal);
case MT65XX_LED_MODE_CUST_LCM:
if (strcmp(cust->name, "lcd-backlight") == 0)
bl_brightness_hal = level;
LEDS_DEBUG("brightness_set_cust:backlight control by LCM\n");
/* warning for this API revork */
return ((cust_brightness_set) (cust->data)) (level, bl_div_hal);
case MT65XX_LED_MODE_CUST_BLS_PWM:
if (strcmp(cust->name, "lcd-backlight") == 0)
bl_brightness_hal = level;
#ifdef MET_USER_EVENT_SUPPORT
if (enable_met_backlight_tag())
output_met_backlight_tag(level);
#endif
return ((cust_set_brightness) (cust->data)) (level);
case MT65XX_LED_MODE_NONE:
default:
break;
}
return -1;
}
void mt_mt65xx_led_work(struct work_struct *work)
{
struct mt65xx_led_data *led_data =
container_of(work, struct mt65xx_led_data, work);
LEDS_DEBUG("%s:%d\n", led_data->cust.name, led_data->level);
mutex_lock(&leds_mutex);
mt_mt65xx_led_set_cust(&led_data->cust, led_data->level);
mutex_unlock(&leds_mutex);
}
void mt_mt65xx_led_set(struct led_classdev *led_cdev, enum led_brightness level)
{
struct mt65xx_led_data *led_data =
container_of(led_cdev, struct mt65xx_led_data, cdev);
/* unsigned long flags; */
/* spin_lock_irqsave(&leds_lock, flags); */
if (disp_aal_is_support() == true) {
if (led_data->level != level) {
led_data->level = level;
if (strcmp(led_data->cust.name, "lcd-backlight") != 0) {
LEDS_DEBUG("Set NLED directly %d at time %lu\n",
led_data->level, jiffies);
schedule_work(&led_data->work);
} else {
if (level != 0
&& level * CONFIG_LIGHTNESS_MAPPING_VALUE < 255) {
level = 1;
} else {
level =
(level * CONFIG_LIGHTNESS_MAPPING_VALUE) /
255;
}
backlight_debug_log(led_data->level, level);
disp_pq_notify_backlight_changed((((1 <<
MT_LED_INTERNAL_LEVEL_BIT_CNT)
- 1) * level +
127) / 255);
disp_aal_notify_backlight_changed((((1 <<
MT_LED_INTERNAL_LEVEL_BIT_CNT)
- 1) * level +
127) / 255);
}
}
} else {
/* do something only when level is changed */
if (led_data->level != level) {
led_data->level = level;
if (strcmp(led_data->cust.name, "lcd-backlight") != 0) {
LEDS_DEBUG("Set NLED directly %d at time %lu\n",
led_data->level, jiffies);
schedule_work(&led_data->work);
} else {
if (level != 0
&& level * CONFIG_LIGHTNESS_MAPPING_VALUE < 255) {
level = 1;
} else {
level =
(level * CONFIG_LIGHTNESS_MAPPING_VALUE) /
255;
}
backlight_debug_log(led_data->level, level);
disp_pq_notify_backlight_changed((((1 <<
MT_LED_INTERNAL_LEVEL_BIT_CNT)
- 1) * level +
127) / 255);
if (led_data->cust.mode == MT65XX_LED_MODE_CUST_BLS_PWM) {
mt_mt65xx_led_set_cust(&led_data->cust,
((((1 <<
MT_LED_INTERNAL_LEVEL_BIT_CNT)
- 1) * level +
127) / 255));
} else {
mt_mt65xx_led_set_cust(&led_data->cust, level);
}
}
}
/* spin_unlock_irqrestore(&leds_lock, flags); */
}
/* if(0!=aee_kernel_Powerkey_is_press()) */
/* aee_kernel_wdt_kick_Powkey_api("mt_mt65xx_led_set",WDT_SETBY_Backlight); */
}
int mt_mt65xx_blink_set(struct led_classdev *led_cdev,
unsigned long *delay_on, unsigned long *delay_off)
{
struct mt65xx_led_data *led_data =
container_of(led_cdev, struct mt65xx_led_data, cdev);
static int got_wake_lock;
struct nled_setting nled_tmp_setting = { 0, 0, 0 };
/* only allow software blink when delay_on or delay_off changed */
if (*delay_on != led_data->delay_on
|| *delay_off != led_data->delay_off) {
led_data->delay_on = *delay_on;
led_data->delay_off = *delay_off;
if (led_data->delay_on && led_data->delay_off) { /* enable blink */
led_data->level = 255; /* when enable blink then to set the level (255) */
/* AP PWM all support OLD mode */
if (led_data->cust.mode == MT65XX_LED_MODE_PWM) {
nled_tmp_setting.nled_mode = NLED_BLINK;
nled_tmp_setting.blink_off_time =
led_data->delay_off;
nled_tmp_setting.blink_on_time =
led_data->delay_on;
mt_led_set_pwm(led_data->cust.data,
&nled_tmp_setting);
return 0;
} else if ((led_data->cust.mode == MT65XX_LED_MODE_PMIC) && (
#ifdef CONFIG_MTK_PMIC_CHIP_MT6356
led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK0 ||
#endif
led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK1
)) {
nled_tmp_setting.nled_mode = NLED_BLINK;
nled_tmp_setting.blink_off_time =
led_data->delay_off;
nled_tmp_setting.blink_on_time =
led_data->delay_on;
mt_led_blink_pmic(led_data->cust.data,
&nled_tmp_setting);
return 0;
} else if (!got_wake_lock) {
wake_lock(&leds_suspend_lock);
got_wake_lock = 1;
}
} else if (!led_data->delay_on && !led_data->delay_off) { /* disable blink */
/* AP PWM all support OLD mode */
if (led_data->cust.mode == MT65XX_LED_MODE_PWM) {
nled_tmp_setting.nled_mode = NLED_OFF;
mt_led_set_pwm(led_data->cust.data,
&nled_tmp_setting);
return 0;
} else if ((led_data->cust.mode == MT65XX_LED_MODE_PMIC) && (
#ifdef CONFIG_MTK_PMIC_CHIP_MT6356
led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK0 ||
#endif
led_data->cust.data == MT65XX_LED_PMIC_NLED_ISINK1
)) {
mt_brightness_set_pmic(led_data->cust.data, 0,
0);
return 0;
} else if (got_wake_lock) {
wake_unlock(&leds_suspend_lock);
got_wake_lock = 0;
}
}
return -1;
}
/* delay_on and delay_off are not changed */
return 0;
}