s32 muic_ts5usba33402_detect_accessory(s32 upon_irq)
{
s32 ret = 0;
u8 int_stat_value;
muic_mdelay(70);
/* Read INT_STAT */
ret = muic_i2c_read_byte(INT_STAT, &int_stat_value);
printk("[MUIC] muic_ts5usba33402_detect_accessory, int_stat_value:0x%02x \n", int_stat_value);
if (ret < 0) {
printk(KERN_INFO "[MUIC] INT_STAT reading failed\n");
muic_path = MUIC_UNKNOWN;
charging_mode = muic_path;
//set_muic_charger_detected();
return ret;
}
/* Branch according to the previous muic_path */
switch (muic_path) {
/*
* MUIC_UNKNOWN is reached in two cases both do not have nothing to do with IRQ.
* First, at the initialization time where the muic_path is not available yet.
* Second, whenever the current muic_path detection is failed.
*/
case MUIC_UNKNOWN :
/*
* If the previous muic_path was MUIC_NONE,
* the only possible condition for a MUIC IRQ is plugging in an accessory.
*/
case MUIC_NONE :
set_ts5usba33402_muic_path(int_stat_value);
break;
/*
* If the previous muic_path was MUIC_NA_TA, MUIC_LG_TA, MUIC_TA_1A, MUIC_INVALID_CHG,
* MUIC_AP_UART, MUIC_CP_UART, MUIC_AP_USB, MUIC_OTG, or MUIC_CP_USB,
* the only possible condition for a MUIC IRQ is plugging out the accessory.
*
* In this case, initialize MUIC and wait an IRQ.
* We don't need to wait 250msec because this is not an erronous case
* (we need to reset the facility to set STATUS for an erronous case and
* have to wait 250msec) and, if this is not an erronous case, the facility
* was already initialized at the system booting.
*/
case MUIC_AP_UART :
case MUIC_CP_UART :
if ((int_stat_value & IDNO) == IDNO_1011) {
muic_i2c_write_byte(SW_CONTROL, COMP2_TO_HZ | COMN1_TO_HZ);
muic_path = MUIC_NONE;
charging_mode = CHARGING_NONE;
}
break;
case MUIC_NA_TA :
case MUIC_LG_TA :
case MUIC_TA_1A :
case MUIC_INVALID_CHG :
if (((int_stat_value & VBUS) == 0) || ((int_stat_value & CHGDET) == 0)) {
muic_path = MUIC_NONE;
charging_mode = CHARGING_NONE;
}
break;
case MUIC_AP_USB :
case MUIC_CP_USB :
if ((int_stat_value & VBUS) == 0) {
/* USB host removed */
muic_path = MUIC_NONE;
charging_mode = CHARGING_NONE;
}
break;
#if defined (CONFIG_CX2_MHL_TX_SII9244)
case MUIC_MHL :
printk(KERN_WARNING "[MUIC] Detect step3 mhl \n");
if ((int_stat_value & VBUS) == 0) {
MHL_On(0);
muic_path = MUIC_NONE;
}
break;
#endif
default :
printk(KERN_WARNING "[MUIC] Failed to detect an accessory. Try again!");
muic_path = MUIC_UNKNOWN;
charging_mode = CHARGING_NONE;
ret = -1;
}
printk(KERN_WARNING "[MUIC] muic_ts5usba33402_detect_accessory, muic_path = %s\n", muic_path_str[muic_path]);
if (muic_path == MUIC_UNKNOWN || muic_path == MUIC_NONE){
muic_init_ts5usba33402(RESET);
gpio_set_value(IFX_USB_VBUS_EN_GPIO, 0);
printk(KERN_INFO "[MUIC] charging_ic_deactive()\n");
}
//set_muic_charger_detected();
return ret;
}
s32 muic_ts5usba33402_detect_accessory(s32 upon_irq)
{
s32 ret = 0;
u8 int_stat_value;
/*
* Upon an MUIC IRQ (MUIC_INT_N falls),
* wait 70ms before reading INT_STAT and STATUS.
* After the reads, MUIC_INT_N returns to high
* (but the INT_STAT and STATUS contents will be held).
*
* Do this only if muic_ts5usba33402_detect_accessory() was called upon IRQ.
*/
//if (upon_irq) {
muic_mdelay(70);
//}
/* Read INT_STAT */
ret = muic_i2c_read_byte(INT_STAT, &int_stat_value);
printk("[MUIC] muic_ts5usba33402_detect_accessory, int_stat_value:0x%02x \n", int_stat_value);
if (ret < 0) {
printk(KERN_INFO "[MUIC] INT_STAT reading failed\n");
muic_mode = MUIC_UNKNOWN;
charging_mode = CHARGING_UNKNOWN;
//
//set_muic_charger_detected();
return ret;
}
// muic_set_device_none_detect(int_stat_value);
/* Branch according to the previous muic_mode */
switch (muic_mode) {
/*
* MUIC_UNKNOWN is reached in two cases both do not have nothing to do with IRQ.
* First, at the initialization time where the muic_mode is not available yet.
* Second, whenever the current muic_mode detection is failed.
*/
case MUIC_UNKNOWN :
/*
* If the previous muic_mode was MUIC_NONE,
* the only possible condition for a MUIC IRQ is plugging in an accessory.
*/
case MUIC_NONE :
set_ts5usba33402_muic_mode(int_stat_value);
break;
/*
* If the previous muic_mode was MUIC_NA_TA, MUIC_LG_TA, MUIC_TA_1A, MUIC_INVALID_CHG,
* MUIC_AP_UART, MUIC_CP_UART, MUIC_AP_USB, MUIC_OTG, or MUIC_CP_USB,
* the only possible condition for a MUIC IRQ is plugging out the accessory.
*
* In this case, initialize MUIC and wait an IRQ.
* We don't need to wait 250msec because this is not an erronous case
* (we need to reset the facility to set STATUS for an erronous case and
* have to wait 250msec) and, if this is not an erronous case, the facility
* was already initialized at the system booting.
*/
case MUIC_AP_UART :
case MUIC_CP_UART :
if ((int_stat_value & IDNO) == IDNO_1011) {
muic_i2c_write_byte(SW_CONTROL, COMP2_TO_HZ | COMN1_TO_HZ);
muic_mode = MUIC_NONE;
charging_mode = CHARGING_NONE;
}
break;
case MUIC_NA_TA :
case MUIC_LG_TA :
case MUIC_TA_1A :
case MUIC_INVALID_CHG :
if (((int_stat_value & V_VBUS) == 0) || ((int_stat_value & CHGDET) == 0)) {
muic_mode = MUIC_NONE;
charging_mode = CHARGING_NONE;
}
break;
case MUIC_AP_USB :
case MUIC_CP_USB :
/*
* Check if V_VBUS == 0 && IDNO == 0x1011 (open).
* If so, it's MUIC_NONE.
* Otherwise, it's an erronous situation. MUIC_UNKNOWN.
*/
if((int_stat_value & IDNO) == IDNO_0010)
{
muic_mode = MUIC_CP_USB;
}
else if ((int_stat_value & IDNO) == IDNO_0100)
{
muic_mode = MUIC_CP_UART;
}
else if ((int_stat_value & V_VBUS) == 0) {
/* USB Host Removed */
muic_mode = MUIC_NONE;
charging_mode = CHARGING_NONE;
}
break;
#if defined(CONFIG_MHL_TX_SII9244)
case MUIC_MHL :
printk(KERN_WARNING "[MUIC] Detect step3 MHL \n");
if ((int_stat_value & V_VBUS) == 0) {
MHL_On(0);
muic_mode = MUIC_NONE;
charging_mode = CHARGING_NONE;
}
break;
#endif
default:
printk(KERN_WARNING "[MUIC] Failed to detect an accessory. Try again!");
muic_mode = MUIC_UNKNOWN;
charging_mode = CHARGING_NONE;
ret = -1;
break;
}
if(muic_mode == MUIC_UNKNOWN || muic_mode == MUIC_NONE){
muic_init_ts5usba33402(RESET);
gpio_set_value(IFX_USB_VBUS_EN_GPIO, 0);
printk(KERN_INFO "[MUIC] charging_ic_deactive()\n");
}
//
//
printk( "[MUIC] muic_ts5usba33402_detect_accessory, muic_mode = %s (%d) \n", muic_mode_str[muic_mode], muic_mode);
return ret;
}
