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extcon: sm5502: Detect OTG when USB_ID is connected to ground

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In it's curent state this driver ignores OTG adapters with ID pin
connected to ground. This commit adds a check to set extcon into
host mode when such OTG adapter is connected.

Signed-off-by: Nikita Travkin <nikitos.tr@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Nikita Travkin 2021-01-19 18:33:47 +05:00 committed by Chanwoo Choi
parent 17e8ff013e
commit e3f6032909
1 changed files with 20 additions and 2 deletions
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22
drivers/extcon/extcon-sm5502.c
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@ -144,6 +144,7 @@ enum sm5502_muic_acc_type {
SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE = 0x3e, /* | 001|11110| */
SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END = 0x5e, /* | 010|11110| */
/* |Dev Type1|--ADC| */
SM5502_MUIC_ADC_GROUND_USB_OTG = 0x80, /* | 100|00000| */
SM5502_MUIC_ADC_OPEN_USB = 0x5f, /* | 010|11111| */
SM5502_MUIC_ADC_OPEN_TA = 0xdf, /* | 110|11111| */
SM5502_MUIC_ADC_OPEN_USB_OTG = 0xff, /* | 111|11111| */
@ -291,11 +292,27 @@ static unsigned int sm5502_muic_get_cable_type(struct sm5502_muic_info *info)
* connected with to MUIC device.
*/
cable_type = adc & SM5502_REG_ADC_MASK;
if (cable_type == SM5502_MUIC_ADC_GROUND)
return SM5502_MUIC_ADC_GROUND;
switch (cable_type) {
case SM5502_MUIC_ADC_GROUND:
ret = regmap_read(info->regmap, SM5502_REG_DEV_TYPE1,
&dev_type1);
if (ret) {
dev_err(info->dev, "failed to read DEV_TYPE1 reg\n");
return ret;
}
switch (dev_type1) {
case SM5502_REG_DEV_TYPE1_USB_OTG_MASK:
cable_type = SM5502_MUIC_ADC_GROUND_USB_OTG;
break;
default:
dev_dbg(info->dev,
"cannot identify the cable type: adc(0x%x), dev_type1(0x%x)\n",
adc, dev_type1);
return -EINVAL;
}
break;
case SM5502_MUIC_ADC_SEND_END_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S1_BUTTON:
case SM5502_MUIC_ADC_REMOTE_S2_BUTTON:
@ -396,6 +413,7 @@ static int sm5502_muic_cable_handler(struct sm5502_muic_info *info,
con_sw = DM_DP_SWITCH_OPEN;
vbus_sw = VBUSIN_SWITCH_VBUSOUT;
break;
case SM5502_MUIC_ADC_GROUND_USB_OTG:
case SM5502_MUIC_ADC_OPEN_USB_OTG:
id = EXTCON_USB_HOST;
con_sw = DM_DP_SWITCH_USB;