s32 muic_max14526_detect_accessory(s32 upon_irq)
{
s32 ret = 0;
int loop = 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_max14526_detect_accessory() was called upon IRQ. */
if (upon_irq) {
for (; loop < 250; loop++)
muic_udelay(1000);
}
/* Reads INT_STAT */
ret = muic_i2c_read_byte(INT_STAT, &int_stat_value);
if (ret < 0) {
printk(KERN_INFO "[chahee.kim] INT_STAT reading failed\n");
muic_mode = MUIC_UNKNOWN;
return ret;
}
printk(KERN_INFO "[chahee.kim] IDNO = %d\n", (int_stat_value & IDNO));
muic_mode = int_stat_value & IDNO;
/* Branches 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_max14526_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_NA_TA:
case MUIC_TA_1A:
case MUIC_INVALID_CHG :
if ((int_stat_value & VBUS) == 0) {
// Exit Charger Mode
muic_mode = MUIC_NONE;
}else{
set_max14526_muic_mode(int_stat_value);
}
break;
case MUIC_LG_TA :
printk(KERN_WARNING "[chahee.kim] LG_TA");
if ((int_stat_value & CHGDET) == 0) {
muic_mode = MUIC_NONE;
}
else {
set_max14526_muic_mode(int_stat_value);
}
break;
case MUIC_AP_UART :
if ((int_stat_value & IDNO) == IDNO_1011) {
/* Exit Factory Mode */
muic_mode = MUIC_NONE;
}
else {
set_max14526_muic_mode(int_stat_value);
}
break;
case MUIC_AP_USB :
if ((int_stat_value & VBUS) == 0) {
/* USB Host Removed */
muic_mode = MUIC_NONE;
}else{
set_max14526_muic_mode(int_stat_value);
}
break;
default:
printk(KERN_WARNING "[chahee.kim] Failed to detect an accessory. Try again!\n");
#ifndef CHARGER_TEST
lge_charger_disable();
#endif
muic_mode = MUIC_UNKNOWN;
ret = -1;
break;
}
printk(KERN_WARNING "[chahee.kim] muic_max14526_detect_accessory, muic_mode = %d \n", muic_mode );
//if (muic_mode == MUIC_UNKNOWN || muic_mode == MUIC_NONE) {
// muic_init_max14526(DEFAULT);
// printk(KERN_INFO "[chahee.kim] charging_ic_deactive()\n");
//}
return ret;
}
s32 muic_max14526_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_max14526_detect_accessory() was called upon IRQ. */
muic_mdelay(250);
/* Reads INT_STAT */
ret = muic_i2c_read_byte(INT_STAT, &int_stat_value);
printk(KERN_WARNING "[MUIC] muic_max14526_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;
return ret;
}
/* Branches 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_max14526_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_NA_TA:
case MUIC_TA_1A:
case MUIC_INVALID_CHG :
case MUIC_LG_TA :
case MUIC_AP_UART :
case MUIC_CP_UART :
case MUIC_AP_USB :
case MUIC_CP_USB :
if ((int_stat_value & V_VBUS) != 0) { // V_VBUS == 1
set_max14526_muic_mode(int_stat_value);
} else if ((int_stat_value & IDNO) == IDNO_1011) { // V_VBUS == 0
charging_mode = CHARGING_NONE;
muic_mode = MUIC_NONE;
} else
set_max14526_muic_mode(int_stat_value);
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;
}
if( ((int_stat_value & V_VBUS) != 0) && (!gpio_get_value(GPIO_MHL_SEL)) && ((int_stat_value & IDNO) == IDNO_0000) )
{
MHL_On(1); //re-enable MHL
muic_mode = MUIC_MHL;
charging_mode = CHARGING_USB;
}
break;
#endif
default:
printk(KERN_WARNING "[MUIC] Failed to detect an accessory. Try again!");
muic_mode = MUIC_UNKNOWN;
charging_mode = CHARGING_UNKNOWN;
ret = -1;
break;
}
printk(KERN_WARNING "[MUIC] muic_max14526_detect_accessory, muic_mode = %s (%d) \n", muic_mode_str[muic_mode], muic_mode );
if (muic_mode == MUIC_UNKNOWN || muic_mode == MUIC_NONE) {
muic_init_max14526(RESET);
gpio_set_value(IFX_USB_VBUS_EN_GPIO, 0);
printk(KERN_INFO "[MUIC] charging_ic_deactive()\n");
}
return ret;
}
s32 muic_max14526_detect_accessory(s32 upon_irq)
{
s32 ret = 0;
int loop = 0;
u8 int_stat_value;
if (upon_irq) {
for (; loop < 250; loop++)
muic_udelay(1000);
}
/* Reads INT_STAT */
ret = muic_i2c_read_byte(INT_STAT, &int_stat_value);
if (ret < 0) {
printk(KERN_INFO "[chahee.kim] INT_STAT reading failed\n");
muic_mode = MUIC_UNKNOWN;
return ret;
}
printk(KERN_INFO "[chahee.kim] IDNO = %d\n", (int_stat_value & IDNO));
muic_mode = int_stat_value & IDNO;
/* Branches 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_max14526_muic_mode(int_stat_value);
break;
case MUIC_NA_TA:
case MUIC_TA_1A:
case MUIC_INVALID_CHG :
if ((int_stat_value & VBUS) == 0) {
muic_mode = MUIC_NONE;
}else{
set_max14526_muic_mode(int_stat_value);
}
break;
case MUIC_LG_TA :
printk(KERN_WARNING "[chahee.kim] LG_TA");
if ((int_stat_value & CHGDET) == 0) {
muic_mode = MUIC_NONE;
}
else {
set_max14526_muic_mode(int_stat_value);
}
break;
case MUIC_AP_UART :
if ((int_stat_value & IDNO) == IDNO_1011) {
/* Exit Factory Mode */
muic_mode = MUIC_NONE;
}
else {
set_max14526_muic_mode(int_stat_value);
}
break;
case MUIC_AP_USB :
if ((int_stat_value & VBUS) == 0) {
/* USB Host Removed */
muic_mode = MUIC_NONE;
}else{
set_max14526_muic_mode(int_stat_value);
}
break;
default:
printk(KERN_WARNING "[chahee.kim] Failed to detect an accessory. Try again!\n");
#ifndef CHARGER_TEST
lge_charger_disable();
#endif
muic_mode = MUIC_UNKNOWN;
ret = -1;
break;
}
printk(KERN_WARNING "[chahee.kim] muic_max14526_detect_accessory, muic_mode = %d \n", muic_mode );
return ret;
}
