s32 muic_max14526_detect_accessory(struct i2c_client *client, s32 upon_irq)
{
s32 ret = 0;
s32 loop = 0;
u8 int_stat_value=0;
TYPE_MUIC_MODE muic_mode = muic_get_mode();
struct ts5usb_device *dev = i2c_get_clientdata(client);
/*
* Upon an MUIC IRQ (MUIC_INT_N falls),
* wait 70ms before reading INT_STATUS1 and STATUS.
* After the reads, MUIC_INT_N returns to high
* (but the INT_STATUS1 and STATUS contents will be held).
*
* Do this only if muic_max14526_detect_accessory() was called upon IRQ.
*/
if (upon_irq) {
mdelay(70);
}
/* Read INT_STATUS1 */
ret = muic_i2c_read_byte(client, INT_STAT, &int_stat_value);
dev_info(&client->dev, "muic: %s: int_stat_value:0x%x :%d\n", __func__, int_stat_value, muic_mode);
if (ret < 0) {
dev_info(&client->dev, "muic: INT_STATUS1 reading failed\n");
muic_set_mode(MUIC_UNKNOWN);
return ret;
}
switch (muic_mode)
{/* Branch according to the previous muic_mode */
case MUIC_UNKNOWN :
case MUIC_NONE :
muic_set_device_none_detect(client, int_stat_value);
break;
case MUIC_AP_UART :
case MUIC_CP_UART :
dev_info(&client->dev, "muic: MUIC_AP_UART || MUIC_CP_UART\n");
if(!(int_stat_value & VBUS)&&(IDNO_0010 == (int_stat_value & 0x0f)))
{
muic_set_mode(MUIC_CP_USB);
}
else if (!(int_stat_value & VBUS))
{
muic_i2c_write_byte(client, SW_CONTROL, DP_UART | DM_UART);
muic_set_mode(MUIC_NONE);
}
else
{
dev_info(&client->dev, "UART is not removed\n");
}
break;
case MUIC_NA_TA :
case MUIC_LG_TA :
case MUIC_TA_1A :
case MUIC_INVALID_CHG :
dev_info(&client->dev, "muic: Detect step2\n");
if (((int_stat_value & VBUS) == 0) ||((int_stat_value & CHGDET) == 0))
{
muic_set_mode(MUIC_NONE);
}
else
{
dev_info(&client->dev, "TA is not removed\n");
}
break;
case MUIC_AP_USB :
/* USB Host Removed */
if((int_stat_value & VBUS) == 0)
{
android_USB_disconnect();// for usb disconnect event
muic_set_mode(MUIC_NONE);
}
else
{
dev_info(&client->dev, "AP USB is not removed\n");
}
break;
case MUIC_CP_USB :
if((int_stat_value & VBUS) == 0)
{
muic_set_mode(MUIC_NONE);
}
else
{
dev_info(&client->dev, "CP USB is not removed\n");
}
break;
#if defined(CONFIG_MHL_TX_SII9244) || defined(CONFIG_MHL_TX_SII9244_LEGACY)
case MUIC_MHL :
dev_info(&client->dev, "muic: Detect step3 mhl \n");
if ((int_stat_value & VBUS) == 0) {
//MHL_On(0);
muic_set_mode(MUIC_NONE);
}
break;
#endif
default:
dev_info(&client->dev, "muic: Failed to detect an accessory. Try again!");
muic_set_mode(MUIC_UNKNOWN);
ret = -1;
break;
}
muic_mode = muic_get_mode();
dev_info(&client->dev, "muic: muic_detection_mode=%d \n", muic_mode);
if (muic_mode == MUIC_UNKNOWN || muic_mode == MUIC_NONE) {
#if defined(CONFIG_MHL) && defined(CONFIG_MHL_TX_MUIC_BUG_FIX)
/* SJIT 2012-01-27 [[email protected]] P940 GB
* max14526 300ms delay side effect bug fixed test code
*/
if (Int_Status == Second_Int) {
if (!gpio_get_value(dev->gpio_mhl)) {
dev_info(&client->dev, "muic: wait for mhl switch completed\n");
muic_init_max14526(client, DEFAULT);
gpio_set_value(dev->gpio_ifx_vbus, 0);
}
else {
dev_info(&client->dev, "muic: mhl switch not completed\n");
while (!gpio_get_value(dev->gpio_mhl)) {
udelay(500);
muic_set_mode(MUIC_MHL);
// MHL_On(0);
}
dev_info(&client->dev, "muic: mhl switch completed\n");
muic_init_max14526(client, DEFAULT);
gpio_set_value(dev->gpio_ifx_vbus, 0);
}
}
else {
muic_init_max14526(client, DEFAULT);
gpio_set_value(dev->gpio_ifx_vbus, 0);
}
#else
muic_init_max14526(client, RESET);
gpio_set_value(IFX_USB_VBUS_EN_GPIO, 0);
//charging_ic_deactive();
dev_info(&client->dev, "muic: charging_ic_deactive()\n");
#endif
}
// LGE_CHANGES_S [[email protected]] 2012-03-19
#if defined(CONFIG_MAX8971_CHARGER)
if(muic_mode == MUIC_NA_TA || muic_mode == MUIC_LG_TA || muic_mode == MUIC_TA_1A)
{
printk("[MUIC] max8971_start_charging TA\n");
max8971_start_charging(900);
}
else if(muic_mode == MUIC_AP_USB)
{
printk("[MUIC]max8971_start_charging USB\n");
max8971_start_charging(500);
}
/* else if( muic_mode == MUIC_CP_USB || muic_mode == MUIC_CP_UART)
{
printk("[MUIC] max8971_start_charging Factory\n");
max8971_start_charging(1550);
}
*/
else if( muic_mode == MUIC_CP_USB )
{
//printk("[MUIC] max8971_stop due to MUIC_CP_USB mode \n");
printk("[MUIC] max8971_start_charging Factory MUIC_CP_USB \n");
// max8971_start_charging(1550);
// max8971_stop_charging();
max8971_start_Factory_charging();
}
else if( muic_mode == MUIC_CP_UART)
{
printk("[MUIC] max8971_start_charging Factory MUIC_CP_UART \n");
//printk("[MUIC] max8971_stop due to MUIC_CP_UART mode \n");
// max8971_stop_charging();
// max8971_start_charging(1550);
max8971_start_Factory_charging();
}
else if( muic_mode == MUIC_MHL)
{
printk("[MUIC] max8971_start_charging MHL\n");
max8971_start_charging(400);
}
else if( muic_mode == MUIC_NONE)
{
printk("[MUIC] max8971_stop_charging\n");
max8971_stop_charging();
}
else
printk("[MUIC] can not open muic mode\n");
// LGE_CHANGES_E [[email protected]] 2012-03-19
#endif
return ret;
}
/* LGE_UPDATE_S [[email protected]] 2010-12-01, modify detection scheme */ static void muic_device_none_detect(void) { u8 reg_value; u8 status_value; s32 ret; if ((key_col == 3) && (key_row == 0)) // Volume up key_was_pressed = 1; else if ((key_col == 3) && (key_row == 1)) // Volume down key_was_pressed = 2; printk(KERN_WARNING "[MUIC] Device_None_Detect int_stat_val = 0x%x\n",int_stat_val); /* LGE_CHANGE_S [[email protected]] 2010-12-14, CP retain mode */ #ifdef CP_RETAIN if (is_cp_retained) { //muic_CP_USB_set(); muic_set_mode(MUIC_CP_USB); } // IDNO=0100? 130Kohm :: CP UART MODE else if(((int_stat_val & MIDNO) == 0x04) || (hidden_menu_switching == 7)) { /* LGE_CHANGE_E [[email protected]] 2011-01-06, CP retain mode */ #elif defined(USB_RETAIN) /* 2012.05.15, [email protected], USB retain mode. */ ret = muic_i2c_read_byte_local(INT_STAT, &status_value); if(ret < 0) printk("[MUIC] [%s-%d] muic_i2c_read_byte_local Fail [ret = %d]\n", __func__, __LINE__, ret); else printk("[MUIC] [%s-%d] INT_STAT Value is 0x%x / MVBUS bit is %d\n", __func__, __LINE__, status_value, ((status_value & MVBUS) >> 4)); if (usb_retained == CP_RETAINED) { //muic_CP_USB_set(); if((status_value & MVBUS)) { printk("[MUIC] [%s-%d] muic_set_mode(MUIC_CP_USB)\n", __func__, __LINE__); muic_set_mode(MUIC_CP_USB); } } else if (usb_retained == AP_RETAINED) { //muic_AP_USB_set(); if((status_value & MVBUS)) { printk("[MUIC] [%s-%d] muic_set_mode(MUIC_AP_USB)\n", __func__, __LINE__); muic_set_mode(MUIC_AP_USB); } } // IDNO=0100? 130Kohm :: CP UART MODE else if(((int_stat_val & MIDNO) == 0x04) || (hidden_menu_switching == 7)) { #else if(((int_stat_val & MIDNO) == 0x04) || (hidden_menu_switching == 7)) { #endif //muic_CP_UART_set(); muic_set_mode(MUIC_CP_UART); // [email protected] } // IDNO=0010? 56Kohm :: CP USB MODE else if (((int_stat_val & MIDNO ) == 0x02) || (hidden_menu_switching == 9)){ if (key_was_pressed == 2) //muic_AP_UART_set(); muic_set_mode(MUIC_AP_UART); // [email protected] else //muic_CP_USB_set(); muic_set_mode(MUIC_CP_USB); // [email protected] } // LGE_UPDATE_S [[email protected]] 2010-12-12, for 910K factory download // IDNO=1010? 910Kohm :: CP USB MODE #ifdef CABLE_DETECT_910K else if ((int_stat_val & MIDNO ) == 0x0a) { //muic_CP_USB_set(); muic_set_mode(MUIC_CP_USB); // [email protected] } else if ((int_stat_val & MIDNO ) == 0x09) { //muic_CP_USB_set(); muic_set_mode(MUIC_CP_USB); // [email protected] } #endif #if 0 // CHGDET=1? :: HIGH CURRENT USB or TA? else if (int_stat_val & MCHGDET) { muic_distinguish_charger(); } #endif // VBUS=1? :: TA or AP USB? else if (int_stat_val & MVBUS) { if (muic_device == MAX14526) { // COMP2 to H-Z / COMN1 to C1COMP (0x03=0x23) muic_i2c_write_byte_local(SW_CONTROL, 0x23); msleep(3); // Read STATUS_REG (0x05) muic_i2c_read_byte_local(STATUS, ®_value); if (reg_value & 0x01 ) { // Dedicated Charger(TA) Detected // COMP2 to H-Z / COMN1 to H-Z (0x03=0x24) muic_i2c_write_byte_local(SW_CONTROL, DP_OPEN | DM_OPEN); charging_ic_set_ta_mode(); muic_mode = MUIC_NA_TA; muic_set_mode(MUIC_NA_TA); // [email protected] 20120502 MUIC re-work printk(KERN_WARNING "[MUIC] Charger detected\n"); } else if (reg_value & 0x80 ) { // Dedicated Charger(TA) Detected muic_i2c_write_byte_local(SW_CONTROL, DP_OPEN | DM_OPEN); charging_ic_set_ta_mode(); muic_mode = MUIC_NA_TA; muic_set_mode(MUIC_NA_TA); printk(KERN_WARNING "[MUIC] NA_TA Charger detected\n"); } else if (reg_value & 0x40 ) { // Dedicated Charger(TA) Detected muic_i2c_write_byte_local(SW_CONTROL, DP_OPEN | DM_OPEN); charging_ic_set_ta_mode(); muic_mode = MUIC_LG_TA; muic_set_mode(MUIC_LG_TA); printk(KERN_WARNING "[MUIC] LG_TA Charger detected\n"); } else { // USB Detected // LGE_UPDATE_S 20110521 [[email protected]] block CP usb for commercial version #if 0 if (key_was_pressed == 2) //muic_CP_USB_set(); muic_set_mode(MUIC_CP_USB); // [email protected] else #endif /* #if 0 */ // LGE_UPDATE_S 20110521 [[email protected]] block CP usb for commercial version //muic_AP_USB_set(); muic_set_mode(MUIC_AP_USB); // [email protected] } } else { // USB Detected // LGE_UPDATE_S 20110521 [[email protected]] block CP usb for commercial version #if 0 if (key_was_pressed == 2) //muic_CP_USB_set(); muic_set_mode(MUIC_CP_USB); // [email protected] else #endif /* #if 0 */ // LGE_UPDATE_S 20110521 [[email protected]] block CP usb for commercial version //muic_AP_USB_set(); muic_set_mode(MUIC_AP_USB); // [email protected] } } else { // Accessory Not Supported muic_mode = MUIC_NONE; } key_was_pressed = 0; } s32 muic_device_detection(s32 upon_irq) { /* LGE_CHANGE_START 2011-03-16 [email protected] patch for Adb offline set and Mass Storage Driver detecting fail */ /* 20110113 [email protected] check muic driver init. state [START] */ if(!muic_init_done){ printk(KERN_WARNING "[MUIC] MUIC has not been initialized! Nothing will be done!!!.\n"); return 0; } /* 20110113 [email protected] check muic driver init. state [END] */ /* LGE_CHANGE_END 2011-03-16 [email protected] */ // Read INT_STAT_REG (0x04) muic_i2c_read_byte_local(INT_STAT, &int_stat_val); printk(KERN_INFO "[MUIC] INT_STAT = %x\n", int_stat_val); switch (muic_mode) { case MUIC_NONE: case MUIC_UNKNOWN: muic_device_none_detect(); break; // CP UART Mode case MUIC_CP_UART: case MUIC_AP_UART: if ((int_stat_val & MIDNO) == 0x0b) { muic_mode = MUIC_NONE; } else { muic_device_none_detect(); } break; // TA Mode case MUIC_NA_TA: case MUIC_LG_TA: case MUIC_TA_1A: case MUIC_INVALID_CHG: if ((int_stat_val & MVBUS) == 0) { // Exit Charger Mode muic_mode = MUIC_NONE; } else { // Bug fix: charger detect interrupt 2 times set_wakelock(0); } break; // USB Mode case MUIC_AP_USB: android_USB_disconnect(); // for usb disconnect event case MUIC_CP_USB: if ((int_stat_val & MVBUS) == 0){ // Exit USB Mode muic_mode = MUIC_NONE; } else { muic_device_none_detect(); } break; default: muic_mode = MUIC_NONE; break; } if (muic_mode == MUIC_NONE) { muic_initialize(DEFAULT); printk(KERN_INFO "[MUIC] muic none\n"); charging_ic_deactive(); printk(KERN_INFO "[MUIC] charging_ic_deactive()\n"); muic_set_mode(MUIC_NONE); // [email protected] 20120502 MUIC re-work } charger_state_update_by_other(); return 0; } EXPORT_SYMBOL(muic_device_detection); /* LGE_UPDATE_E [[email protected]] 2010-12-01, modify detection scheme */ static void muic_wq_func(struct work_struct *muic_wq){ s32 ret = 0; printk(KERN_INFO "[MUIC] muic_wq_func()\n"); ret = muic_device_detection(UPON_IRQ); }
s32 muic_device_detection(s32 upon_irq)
{
/* LGE_CHANGE_START 2011-03-16 [email protected] patch for Adb offline set and Mass Storage Driver detecting fail */
/* 20110113 [email protected] check muic driver init. state [START] */
if(!muic_init_done){
printk(KERN_WARNING "[MUIC] MUIC has not been initialized! Nothing will be done!!!.\n");
return 0;
}
/* 20110113 [email protected] check muic driver init. state [END] */
/* LGE_CHANGE_END 2011-03-16 [email protected] */
// Read INT_STAT_REG (0x04)
muic_i2c_read_byte_local(INT_STAT, &int_stat_val);
printk(KERN_INFO "[MUIC] INT_STAT = %x\n", int_stat_val);
switch (muic_mode)
{
case MUIC_NONE:
case MUIC_UNKNOWN:
muic_device_none_detect();
break;
// CP UART Mode
case MUIC_CP_UART:
case MUIC_AP_UART:
android_USB_disconnect(); // for usb disconnect event
if ((int_stat_val & MIDNO) == 0x0b) {
muic_mode = MUIC_NONE;
}
else {
muic_device_none_detect();
}
break;
// TA Mode
case MUIC_NA_TA:
case MUIC_LG_TA:
case MUIC_TA_1A:
case MUIC_INVALID_CHG:
if ((int_stat_val & MVBUS) == 0) {
// Exit Charger Mode
muic_mode = MUIC_NONE;
}
else {
// Bug fix: charger detect interrupt 2 times
set_wakelock(0);
}
break;
// USB Mode
case MUIC_AP_USB:
case MUIC_CP_USB:
android_USB_disconnect(); // for usb disconnect event
if ((int_stat_val & MVBUS) == 0){
// Exit USB Mode
muic_mode = MUIC_NONE;
}
else {
muic_device_none_detect();
}
break;
default:
muic_mode = MUIC_NONE;
break;
}
if (muic_mode == MUIC_NONE) {
muic_initialize(DEFAULT);
printk(KERN_INFO "[MUIC] muic none\n");
charging_ic_deactive();
printk(KERN_INFO "[MUIC] charging_ic_deactive()\n");
muic_set_mode(MUIC_NONE); // [email protected] 20120502 MUIC re-work
}
charger_state_update_by_other();
return 0;
}
