diff options
Diffstat (limited to 'drivers/extcon/extcon-sm5502.c')
| -rw-r--r-- | drivers/extcon/extcon-sm5502.c | 78 |
1 files changed, 73 insertions, 5 deletions
diff --git a/drivers/extcon/extcon-sm5502.c b/drivers/extcon/extcon-sm5502.c index a32d40f97ff0..560d7dccec7b 100644 --- a/drivers/extcon/extcon-sm5502.c +++ b/drivers/extcon/extcon-sm5502.c @@ -228,6 +228,61 @@ static const struct regmap_config sm5502_muic_regmap_config = { .max_register = SM5502_REG_END, }; +/* Change DM_CON/DP_CON/VBUSIN switch according to cable type */ +static int sm5502_muic_set_path(struct sm5502_muic_info *info, + unsigned int con_sw, unsigned int vbus_sw, + bool attached) +{ + int ret; + + if (!attached) { + con_sw = DM_DP_SWITCH_OPEN; + vbus_sw = VBUSIN_SWITCH_OPEN; + } + + switch (con_sw) { + case DM_DP_SWITCH_OPEN: + case DM_DP_SWITCH_USB: + case DM_DP_SWITCH_AUDIO: + case DM_DP_SWITCH_UART: + ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1, + SM5502_REG_MANUAL_SW1_DP_MASK | + SM5502_REG_MANUAL_SW1_DM_MASK, + con_sw); + if (ret < 0) { + dev_err(info->dev, + "cannot update DM_CON/DP_CON switch\n"); + return ret; + } + break; + default: + dev_err(info->dev, "Unknown DM_CON/DP_CON switch type (%d)\n", + con_sw); + return -EINVAL; + }; + + switch (vbus_sw) { + case VBUSIN_SWITCH_OPEN: + case VBUSIN_SWITCH_VBUSOUT: + case VBUSIN_SWITCH_MIC: + case VBUSIN_SWITCH_VBUSOUT_WITH_USB: + ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1, + SM5502_REG_MANUAL_SW1_VBUSIN_MASK, + vbus_sw); + if (ret < 0) { + dev_err(info->dev, + "cannot update VBUSIN switch\n"); + return ret; + } + break; + default: + dev_err(info->dev, "Unknown VBUS switch type (%d)\n", vbus_sw); + return -EINVAL; + }; + + return 0; +} + /* Return cable type of attached or detached accessories */ static unsigned int sm5502_muic_get_cable_type(struct sm5502_muic_info *info) { @@ -329,7 +384,10 @@ static int sm5502_muic_cable_handler(struct sm5502_muic_info *info, static unsigned int prev_cable_type = SM5502_MUIC_ADC_GROUND; const char **cable_names = info->edev->supported_cable; unsigned int cable_type = SM5502_MUIC_ADC_GROUND; + unsigned int con_sw = DM_DP_SWITCH_OPEN; + unsigned int vbus_sw = VBUSIN_SWITCH_OPEN; unsigned int idx = 0; + int ret; if (!cable_names) return 0; @@ -343,15 +401,19 @@ static int sm5502_muic_cable_handler(struct sm5502_muic_info *info, switch (cable_type) { case SM5502_MUIC_ADC_OPEN_USB: - idx = EXTCON_CABLE_USB; + idx = EXTCON_CABLE_USB; + con_sw = DM_DP_SWITCH_USB; + vbus_sw = VBUSIN_SWITCH_VBUSOUT_WITH_USB; break; case SM5502_MUIC_ADC_OPEN_TA: - idx = EXTCON_CABLE_TA; + idx = EXTCON_CABLE_TA; + con_sw = DM_DP_SWITCH_OPEN; + vbus_sw = VBUSIN_SWITCH_VBUSOUT; break; case SM5502_MUIC_ADC_OPEN_USB_OTG: - idx = EXTCON_CABLE_USB_HOST; - break; - case SM5502_MUIC_ADC_GROUND: + idx = EXTCON_CABLE_USB_HOST; + con_sw = DM_DP_SWITCH_USB; + vbus_sw = VBUSIN_SWITCH_OPEN; break; default: dev_dbg(info->dev, @@ -359,6 +421,12 @@ static int sm5502_muic_cable_handler(struct sm5502_muic_info *info, return 0; }; + /* Change internal hardware path(DM_CON/DP_CON, VBUSIN) */ + ret = sm5502_muic_set_path(info, con_sw, vbus_sw, attached); + if (ret < 0) + return ret; + + /* Change the state of external accessory */ extcon_set_cable_state(info->edev, cable_names[idx], attached); return 0; |