extcon: sm5502: Change internal hardware switch according to cable type
This patch changes internal hardware DP_CON/DM_CON switch according to cable type. The SM5502 MUIC device can set hardware switch as following: - OPEN (not connected state) / USB / UART / AUDIO Also, this patch set VBUSIN switch according to cable type. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>hifive-unleashed-5.1
Chanwoo Choi
parent
e1954452f5
commit
a75fed2ee6
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@ -228,6 +228,61 @@ static const struct regmap_config sm5502_muic_regmap_config = {
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.max_register = SM5502_REG_END,
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};
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/* Change DM_CON/DP_CON/VBUSIN switch according to cable type */
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static int sm5502_muic_set_path(struct sm5502_muic_info *info,
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unsigned int con_sw, unsigned int vbus_sw,
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bool attached)
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{
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int ret;
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if (!attached) {
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con_sw = DM_DP_SWITCH_OPEN;
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vbus_sw = VBUSIN_SWITCH_OPEN;
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}
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switch (con_sw) {
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case DM_DP_SWITCH_OPEN:
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case DM_DP_SWITCH_USB:
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case DM_DP_SWITCH_AUDIO:
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case DM_DP_SWITCH_UART:
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ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1,
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SM5502_REG_MANUAL_SW1_DP_MASK |
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SM5502_REG_MANUAL_SW1_DM_MASK,
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con_sw);
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if (ret < 0) {
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dev_err(info->dev,
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"cannot update DM_CON/DP_CON switch\n");
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return ret;
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}
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break;
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default:
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dev_err(info->dev, "Unknown DM_CON/DP_CON switch type (%d)\n",
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con_sw);
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return -EINVAL;
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};
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switch (vbus_sw) {
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case VBUSIN_SWITCH_OPEN:
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case VBUSIN_SWITCH_VBUSOUT:
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case VBUSIN_SWITCH_MIC:
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case VBUSIN_SWITCH_VBUSOUT_WITH_USB:
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ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1,
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SM5502_REG_MANUAL_SW1_VBUSIN_MASK,
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vbus_sw);
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if (ret < 0) {
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dev_err(info->dev,
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"cannot update VBUSIN switch\n");
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return ret;
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}
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break;
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default:
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dev_err(info->dev, "Unknown VBUS switch type (%d)\n", vbus_sw);
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return -EINVAL;
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};
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return 0;
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}
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/* Return cable type of attached or detached accessories */
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static unsigned int sm5502_muic_get_cable_type(struct sm5502_muic_info *info)
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{
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@ -329,7 +384,10 @@ static int sm5502_muic_cable_handler(struct sm5502_muic_info *info,
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static unsigned int prev_cable_type = SM5502_MUIC_ADC_GROUND;
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const char **cable_names = info->edev->supported_cable;
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unsigned int cable_type = SM5502_MUIC_ADC_GROUND;
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unsigned int con_sw = DM_DP_SWITCH_OPEN;
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unsigned int vbus_sw = VBUSIN_SWITCH_OPEN;
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unsigned int idx = 0;
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int ret;
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if (!cable_names)
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return 0;
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@ -343,15 +401,19 @@ static int sm5502_muic_cable_handler(struct sm5502_muic_info *info,
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switch (cable_type) {
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case SM5502_MUIC_ADC_OPEN_USB:
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idx = EXTCON_CABLE_USB;
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idx = EXTCON_CABLE_USB;
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con_sw = DM_DP_SWITCH_USB;
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vbus_sw = VBUSIN_SWITCH_VBUSOUT_WITH_USB;
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break;
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case SM5502_MUIC_ADC_OPEN_TA:
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idx = EXTCON_CABLE_TA;
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idx = EXTCON_CABLE_TA;
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con_sw = DM_DP_SWITCH_OPEN;
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vbus_sw = VBUSIN_SWITCH_VBUSOUT;
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break;
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case SM5502_MUIC_ADC_OPEN_USB_OTG:
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idx = EXTCON_CABLE_USB_HOST;
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break;
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case SM5502_MUIC_ADC_GROUND:
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idx = EXTCON_CABLE_USB_HOST;
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con_sw = DM_DP_SWITCH_USB;
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vbus_sw = VBUSIN_SWITCH_OPEN;
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break;
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default:
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dev_dbg(info->dev,
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@ -359,6 +421,12 @@ static int sm5502_muic_cable_handler(struct sm5502_muic_info *info,
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return 0;
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};
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/* Change internal hardware path(DM_CON/DP_CON, VBUSIN) */
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ret = sm5502_muic_set_path(info, con_sw, vbus_sw, attached);
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if (ret < 0)
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return ret;
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/* Change the state of external accessory */
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extcon_set_cable_state(info->edev, cable_names[idx], attached);
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return 0;
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@ -223,6 +223,29 @@ enum sm5502_reg {
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#define SM5502_REG_DEV_TYPE2_TTY_MASK (0x1 << SM5502_REG_DEV_TYPE2_TTY_SHIFT)
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#define SM5502_REG_DEV_TYPE2_AV_CABLE_MASK (0x1 << SM5502_REG_DEV_TYPE2_AV_CABLE_SHIFT)
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#define SM5502_REG_MANUAL_SW1_VBUSIN_SHIFT 0
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#define SM5502_REG_MANUAL_SW1_DP_SHIFT 2
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#define SM5502_REG_MANUAL_SW1_DM_SHIFT 5
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#define SM5502_REG_MANUAL_SW1_VBUSIN_MASK (0x3 << SM5502_REG_MANUAL_SW1_VBUSIN_SHIFT)
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#define SM5502_REG_MANUAL_SW1_DP_MASK (0x7 << SM5502_REG_MANUAL_SW1_DP_SHIFT)
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#define SM5502_REG_MANUAL_SW1_DM_MASK (0x7 << SM5502_REG_MANUAL_SW1_DM_SHIFT)
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#define VBUSIN_SWITCH_OPEN 0x0
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#define VBUSIN_SWITCH_VBUSOUT 0x1
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#define VBUSIN_SWITCH_MIC 0x2
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#define VBUSIN_SWITCH_VBUSOUT_WITH_USB 0x3
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#define DM_DP_CON_SWITCH_OPEN 0x0
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#define DM_DP_CON_SWITCH_USB 0x1
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#define DM_DP_CON_SWITCH_AUDIO 0x2
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#define DM_DP_CON_SWITCH_UART 0x3
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#define DM_DP_SWITCH_OPEN ((DM_DP_CON_SWITCH_OPEN <<SM5502_REG_MANUAL_SW1_DP_SHIFT) \
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| (DM_DP_CON_SWITCH_OPEN <<SM5502_REG_MANUAL_SW1_DM_SHIFT))
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#define DM_DP_SWITCH_USB ((DM_DP_CON_SWITCH_USB <<SM5502_REG_MANUAL_SW1_DP_SHIFT) \
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| (DM_DP_CON_SWITCH_USB <<SM5502_REG_MANUAL_SW1_DM_SHIFT))
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#define DM_DP_SWITCH_AUDIO ((DM_DP_CON_SWITCH_AUDIO <<SM5502_REG_MANUAL_SW1_DP_SHIFT) \
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| (DM_DP_CON_SWITCH_AUDIO <<SM5502_REG_MANUAL_SW1_DM_SHIFT))
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#define DM_DP_SWITCH_UART ((DM_DP_CON_SWITCH_UART <<SM5502_REG_MANUAL_SW1_DP_SHIFT) \
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| (DM_DP_CON_SWITCH_UART <<SM5502_REG_MANUAL_SW1_DM_SHIFT))
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/* SM5502 Interrupts */
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enum sm5502_irq {
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/* INT1 */
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