static int max8997_muic_handle_usb(struct max8997_muic_info *info,
enum max8997_muic_usb_type usb_type, bool attached)
{
int ret = 0;
if (usb_type == MAX8997_USB_HOST) {
ret = max8997_muic_set_path(info, info->path_usb, attached);
if (ret < 0) {
dev_err(info->dev, "failed to update muic register\n");
return ret;
}
}
switch (usb_type) {
case MAX8997_USB_HOST:
extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached);
break;
case MAX8997_USB_DEVICE:
extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
break;
default:
dev_err(info->dev, "failed to detect %s usb cable\n",
attached ? "attached" : "detached");
return -EINVAL;
}
return 0;
}
static irqreturn_t max3355_id_irq(int irq, void *dev_id)
{
struct max3355_data *data = dev_id;
int id = gpiod_get_value_cansleep(data->id_gpiod);
if (id) {
/*
* ID = 1 means USB HOST cable detached.
* As we don't have event for USB peripheral cable attached,
* we simulate USB peripheral attach here.
*/
extcon_set_cable_state_(data->edev, EXTCON_USB_HOST, false);
extcon_set_cable_state_(data->edev, EXTCON_USB, true);
} else {
/*
* ID = 0 means USB HOST cable attached.
* As we don't have event for USB peripheral cable detached,
* we simulate USB peripheral detach here.
*/
extcon_set_cable_state_(data->edev, EXTCON_USB, false);
extcon_set_cable_state_(data->edev, EXTCON_USB_HOST, true);
}
return IRQ_HANDLED;
}
static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
{
struct palmas_usb *palmas_usb = _palmas_usb;
struct extcon_dev *edev = palmas_usb->edev;
unsigned int vbus_line_state;
palmas_read(palmas_usb->palmas, PALMAS_INTERRUPT_BASE,
PALMAS_INT3_LINE_STATE, &vbus_line_state);
if (vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS) {
if (palmas_usb->linkstat != PALMAS_USB_STATE_VBUS) {
palmas_usb->linkstat = PALMAS_USB_STATE_VBUS;
extcon_set_cable_state_(edev, EXTCON_USB, true);
dev_info(palmas_usb->dev, "USB cable is attached\n");
} else {
dev_dbg(palmas_usb->dev,
"Spurious connect event detected\n");
}
} else if (!(vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS)) {
if (palmas_usb->linkstat == PALMAS_USB_STATE_VBUS) {
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
extcon_set_cable_state_(edev, EXTCON_USB, false);
dev_info(palmas_usb->dev, "USB cable is detached\n");
} else {
dev_dbg(palmas_usb->dev,
"Spurious disconnect event detected\n");
}
}
return IRQ_HANDLED;
}
static void rcar_gen3_init_for_peri(struct rcar_gen3_chan *ch)
{
rcar_gen3_set_linectrl(ch, 0, 1);
rcar_gen3_set_host_mode(ch, 0);
rcar_gen3_enable_vbus_ctrl(ch, 0);
extcon_set_cable_state_(ch->extcon, EXTCON_USB_HOST, false);
extcon_set_cable_state_(ch->extcon, EXTCON_USB, true);
}
static int max14577_muic_chg_handler(struct max14577_muic_info *info)
{
int chg_type;
bool attached;
int ret = 0;
chg_type = max14577_muic_get_cable_type(info,
MAX14577_CABLE_GROUP_CHG, &attached);
dev_dbg(info->dev,
"external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n",
attached ? "attached" : "detached",
chg_type, info->prev_chg_type);
switch (chg_type) {
case MAX14577_CHARGER_TYPE_USB:
/* PATH:AP_USB */
ret = max14577_muic_set_path(info, info->path_usb, attached);
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
break;
case MAX14577_CHARGER_TYPE_DEDICATED_CHG:
extcon_set_cable_state_(info->edev, EXTCON_TA, attached);
break;
case MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT:
extcon_set_cable_state_(info->edev, EXTCON_CHARGE_DOWNSTREAM,
attached);
break;
case MAX14577_CHARGER_TYPE_SPECIAL_500MA:
extcon_set_cable_state_(info->edev, EXTCON_SLOW_CHARGER,
attached);
break;
case MAX14577_CHARGER_TYPE_SPECIAL_1A:
extcon_set_cable_state_(info->edev, EXTCON_FAST_CHARGER,
attached);
break;
case MAX14577_CHARGER_TYPE_NONE:
case MAX14577_CHARGER_TYPE_DEAD_BATTERY:
break;
default:
dev_err(info->dev,
"failed to detect %s accessory (chg_type:0x%x)\n",
attached ? "attached" : "detached", chg_type);
return -EINVAL;
}
return 0;
}
static int max77693_muic_jig_handler(struct max77693_muic_info *info,
int cable_type, bool attached)
{
int ret = 0;
u8 path = MAX77693_CONTROL1_SW_OPEN;
dev_info(info->dev,
"external connector is %s (adc:0x%02x)\n",
attached ? "attached" : "detached", cable_type);
switch (cable_type) {
case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */
case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */
/* PATH:AP_USB */
path = MAX77693_CONTROL1_SW_USB;
break;
case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */
case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* ADC_JIG_UART_ON */
/* PATH:AP_UART */
path = MAX77693_CONTROL1_SW_UART;
break;
default:
dev_err(info->dev, "failed to detect %s jig cable\n",
attached ? "attached" : "detached");
return -EINVAL;
}
ret = max77693_muic_set_path(info, path, attached);
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_JIG, attached);
return 0;
}
static int max8997_muic_chg_handler(struct max8997_muic_info *info)
{
int chg_type;
bool attached;
int adc;
chg_type = max8997_muic_get_cable_type(info,
MAX8997_CABLE_GROUP_CHG, &attached);
switch (chg_type) {
case MAX8997_CHARGER_TYPE_NONE:
break;
case MAX8997_CHARGER_TYPE_USB:
adc = info->status[0] & STATUS1_ADC_MASK;
adc >>= STATUS1_ADC_SHIFT;
if ((adc & STATUS1_ADC_MASK) == MAX8997_MUIC_ADC_OPEN) {
max8997_muic_handle_usb(info,
MAX8997_USB_DEVICE, attached);
}
break;
case MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT:
extcon_set_cable_state_(info->edev, EXTCON_CHARGE_DOWNSTREAM,
attached);
break;
case MAX8997_CHARGER_TYPE_DEDICATED_CHG:
extcon_set_cable_state_(info->edev, EXTCON_TA, attached);
break;
case MAX8997_CHARGER_TYPE_500MA:
extcon_set_cable_state_(info->edev, EXTCON_SLOW_CHARGER,
attached);
break;
case MAX8997_CHARGER_TYPE_1A:
extcon_set_cable_state_(info->edev, EXTCON_FAST_CHARGER,
attached);
break;
default:
dev_err(info->dev,
"failed to detect %s unknown chg cable (type:0x%x)\n",
attached ? "attached" : "detached", chg_type);
return -EINVAL;
}
return 0;
}
static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info)
{
int cable_type_gnd;
int ret = 0;
bool attached;
cable_type_gnd = max77693_muic_get_cable_type(info,
MAX77693_CABLE_GROUP_ADC_GND, &attached);
switch (cable_type_gnd) {
case MAX77693_MUIC_GND_USB_HOST:
case MAX77693_MUIC_GND_USB_HOST_VB:
/* USB_HOST, PATH: AP_USB */
ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_USB,
attached);
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached);
break;
case MAX77693_MUIC_GND_AV_CABLE_LOAD:
/* Audio Video Cable with load, PATH:AUDIO */
ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_AUDIO,
attached);
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
attached);
break;
case MAX77693_MUIC_GND_MHL:
case MAX77693_MUIC_GND_MHL_VB:
/* MHL or MHL with USB/TA cable */
extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
break;
default:
dev_err(info->dev, "failed to detect %s cable of gnd type\n",
attached ? "attached" : "detached");
return -EINVAL;
}
return 0;
}
static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
{
unsigned int set, id_src;
struct palmas_usb *palmas_usb = _palmas_usb;
struct extcon_dev *edev = palmas_usb->edev;
palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
PALMAS_USB_ID_INT_LATCH_SET, &set);
palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
PALMAS_USB_ID_INT_SRC, &id_src);
if ((set & PALMAS_USB_ID_INT_SRC_ID_GND) &&
(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
PALMAS_USB_ID_INT_LATCH_CLR,
PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
palmas_usb->linkstat = PALMAS_USB_STATE_ID;
extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
} else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
(id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
PALMAS_USB_ID_INT_LATCH_CLR,
PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_ID) &&
(!(set & PALMAS_USB_ID_INT_SRC_ID_GND))) {
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
palmas_usb->linkstat = PALMAS_USB_STATE_ID;
extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
dev_info(palmas_usb->dev, " USB-HOST cable is attached\n");
}
return IRQ_HANDLED;
}
static void palmas_gpio_id_detect(struct work_struct *work)
{
int id;
struct palmas_usb *palmas_usb = container_of(to_delayed_work(work),
struct palmas_usb,
wq_detectid);
struct extcon_dev *edev = palmas_usb->edev;
if (!palmas_usb->id_gpiod)
return;
id = gpiod_get_value_cansleep(palmas_usb->id_gpiod);
if (id) {
extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
} else {
extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
}
}
static irqreturn_t arizona_jackdet(int irq, void *data)
{
struct arizona_extcon_info *info = data;
struct arizona *arizona = info->arizona;
unsigned int val;
int ret;
pm_runtime_get_sync(info->dev);
mutex_lock(&info->lock);
ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
if (ret != 0) {
dev_err(arizona->dev, "Failed to read jackdet status: %d\n",
ret);
mutex_unlock(&info->lock);
pm_runtime_put_autosuspend(info->dev);
return IRQ_NONE;
}
if (val & ARIZONA_JD1_STS) {
dev_dbg(arizona->dev, "Detected jack\n");
ret = extcon_set_cable_state_(&info->edev,
ARIZONA_CABLE_MECHANICAL, true);
if (ret != 0)
dev_err(arizona->dev, "Mechanical report failed: %d\n",
ret);
arizona_start_mic(info);
} else {
dev_dbg(arizona->dev, "Detected jack removal\n");
arizona_stop_mic(info);
ret = extcon_update_state(&info->edev, 0xffffffff, 0);
if (ret != 0)
dev_err(arizona->dev, "Removal report failed: %d\n",
ret);
}
mutex_unlock(&info->lock);
pm_runtime_mark_last_busy(info->dev);
pm_runtime_put_autosuspend(info->dev);
return IRQ_HANDLED;
}
static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info,
bool attached)
{
int ret = 0;
/* switch to UART */
ret = max8997_muic_set_path(info, info->path_uart, attached);
if (ret) {
dev_err(info->dev, "failed to update muic register\n");
return ret;
}
extcon_set_cable_state_(info->edev, EXTCON_JIG, attached);
return 0;
}
static int max8997_muic_handle_dock(struct max8997_muic_info *info,
int cable_type, bool attached)
{
int ret = 0;
ret = max8997_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
if (ret) {
dev_err(info->dev, "failed to update muic register\n");
return ret;
}
switch (cable_type) {
case MAX8997_MUIC_ADC_AV_CABLE_NOLOAD:
case MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON:
extcon_set_cable_state_(info->edev, EXTCON_DOCK, attached);
break;
default:
dev_err(info->dev, "failed to detect %s dock device\n",
attached ? "attached" : "detached");
return -EINVAL;
}
return 0;
}
static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
{
static bool notify_otg, notify_charger;
static unsigned int cable;
int ret, stat, cfg, pwr_stat;
u8 chrg_type;
bool vbus_attach = false;
ret = regmap_read(info->regmap, AXP288_PS_STAT_REG, &pwr_stat);
if (ret < 0) {
dev_err(info->dev, "failed to read vbus status\n");
return ret;
}
vbus_attach = (pwr_stat & PS_STAT_VBUS_PRESENT);
if (!vbus_attach)
goto notify_otg;
/* Check charger detection completion status */
ret = regmap_read(info->regmap, AXP288_BC_GLOBAL_REG, &cfg);
if (ret < 0)
goto dev_det_ret;
if (cfg & BC_GLOBAL_DET_STAT) {
dev_dbg(info->dev, "can't complete the charger detection\n");
goto dev_det_ret;
}
ret = regmap_read(info->regmap, AXP288_BC_DET_STAT_REG, &stat);
if (ret < 0)
goto dev_det_ret;
chrg_type = (stat & DET_STAT_MASK) >> DET_STAT_SHIFT;
switch (chrg_type) {
case DET_STAT_SDP:
dev_dbg(info->dev, "sdp cable is connecetd\n");
notify_otg = true;
notify_charger = true;
cable = EXTCON_CHG_USB_SDP;
break;
case DET_STAT_CDP:
dev_dbg(info->dev, "cdp cable is connecetd\n");
notify_otg = true;
notify_charger = true;
cable = EXTCON_CHG_USB_CDP;
break;
case DET_STAT_DCP:
dev_dbg(info->dev, "dcp cable is connecetd\n");
notify_charger = true;
cable = EXTCON_CHG_USB_DCP;
break;
default:
dev_warn(info->dev,
"disconnect or unknown or ID event\n");
}
notify_otg:
if (notify_otg) {
/*
* If VBUS is absent Connect D+/D- lines to PMIC for BC
* detection. Else connect them to SOC for USB communication.
*/
if (info->pdata->gpio_mux_cntl)
gpiod_set_value(info->pdata->gpio_mux_cntl,
vbus_attach ? EXTCON_GPIO_MUX_SEL_SOC
: EXTCON_GPIO_MUX_SEL_PMIC);
atomic_notifier_call_chain(&info->otg->notifier,
vbus_attach ? USB_EVENT_VBUS : USB_EVENT_NONE, NULL);
}
if (notify_charger)
extcon_set_cable_state_(info->edev, cable, vbus_attach);
/* Clear the flags on disconnect event */
if (!vbus_attach)
notify_otg = notify_charger = false;
return 0;
dev_det_ret:
if (ret < 0)
dev_err(info->dev, "failed to detect BC Mod\n");
return ret;
}
static int max77693_muic_chg_handler(struct max77693_muic_info *info)
{
int chg_type;
int cable_type_gnd;
int cable_type;
bool attached;
bool cable_attached;
int ret = 0;
chg_type = max77693_muic_get_cable_type(info,
MAX77693_CABLE_GROUP_CHG, &attached);
dev_info(info->dev,
"external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n",
attached ? "attached" : "detached",
chg_type, info->prev_chg_type);
switch (chg_type) {
case MAX77693_CHARGER_TYPE_USB:
case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
case MAX77693_CHARGER_TYPE_NONE:
/* Check MAX77693_CABLE_GROUP_ADC_GND type */
cable_type_gnd = max77693_muic_get_cable_type(info,
MAX77693_CABLE_GROUP_ADC_GND,
&cable_attached);
switch (cable_type_gnd) {
case MAX77693_MUIC_GND_MHL:
case MAX77693_MUIC_GND_MHL_VB:
/*
* MHL cable with USB/TA cable
* - MHL cable include two port(HDMI line and separate
* micro-usb port. When the target connect MHL cable,
* extcon driver check whether USB/TA cable is
* connected. If USB/TA cable is connected, extcon
* driver notify state to notifiee for charging battery.
*
* Features of 'USB/TA with MHL cable'
* - Support MHL
* - Support charging through micro-usb port without
* data connection
*/
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
attached);
if (!cable_attached)
extcon_set_cable_state_(info->edev,
EXTCON_DISP_MHL, cable_attached);
break;
}
/* Check MAX77693_CABLE_GROUP_ADC type */
cable_type = max77693_muic_get_cable_type(info,
MAX77693_CABLE_GROUP_ADC,
&cable_attached);
switch (cable_type) {
case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
/*
* Dock-Audio device with USB/TA cable
* - Dock device include two port(Dock-Audio and micro-
* usb port). When the target connect Dock-Audio device,
* extcon driver check whether USB/TA cable is connected
* or not. If USB/TA cable is connected, extcon driver
* notify state to notifiee for charging battery.
*
* Features of 'USB/TA cable with Dock-Audio device'
* - Support external output feature of audio.
* - Support charging through micro-usb port without
* data connection.
*/
extcon_set_cable_state_(info->edev, EXTCON_USB,
attached);
if (!cable_attached)
extcon_set_cable_state_(info->edev, EXTCON_DOCK,
cable_attached);
break;
case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
/*
* Dock-Smart device with USB/TA cable
* - Dock-Desk device include three type of cable which
* are HDMI, USB for mouse/keyboard and micro-usb port
* for USB/TA cable. Dock-Smart device need always
* exteranl power supply(USB/TA cable through micro-usb
* cable). Dock-Smart device support screen output of
* target to separate monitor and mouse/keyboard for
* desktop mode.
*
* Features of 'USB/TA cable with Dock-Smart device'
* - Support MHL
* - Support external output feature of audio
* - Support charging through micro-usb port without
* data connection if TA cable is connected to target.
* - Support charging and data connection through micro-
* usb port if USB cable is connected between target
* and host device
* - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard)
*/
ret = max77693_muic_set_path(info, info->path_usb,
attached);
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_DOCK,
attached);
extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL,
attached);
break;
}
/* Check MAX77693_CABLE_GROUP_CHG type */
switch (chg_type) {
case MAX77693_CHARGER_TYPE_NONE:
/*
* When MHL(with USB/TA cable) or Dock-Audio with USB/TA
* cable is attached, muic device happen below two irq.
* - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting
* MHL/Dock-Audio.
* - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting
* USB/TA cable connected to MHL or Dock-Audio.
* Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC
* irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq.
*
* If user attach MHL (with USB/TA cable and immediately
* detach MHL with USB/TA cable before MAX77693_MUIC_IRQ
* _INT2_CHGTYP irq is happened, USB/TA cable remain
* connected state to target. But USB/TA cable isn't
* connected to target. The user be face with unusual
* action. So, driver should check this situation in
* spite of, that previous charger type is N/A.
*/
break;
case MAX77693_CHARGER_TYPE_USB:
/* Only USB cable, PATH:AP_USB */
ret = max77693_muic_set_path(info, info->path_usb,
attached);
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_USB,
attached);
break;
case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
/* Only TA cable */
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
attached);
break;
}
break;
case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP,
attached);
break;
case MAX77693_CHARGER_TYPE_APPLE_500MA:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SLOW,
attached);
break;
case MAX77693_CHARGER_TYPE_APPLE_1A_2A:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_FAST,
attached);
break;
case MAX77693_CHARGER_TYPE_DEAD_BATTERY:
break;
default:
dev_err(info->dev,
"failed to detect %s accessory (chg_type:0x%x)\n",
attached ? "attached" : "detached", chg_type);
return -EINVAL;
}
return 0;
}
static int max77693_muic_dock_handler(struct max77693_muic_info *info,
int cable_type, bool attached)
{
int ret = 0;
int vbvolt;
bool cable_attached;
unsigned int dock_id;
dev_info(info->dev,
"external connector is %s (adc:0x%02x)\n",
attached ? "attached" : "detached", cable_type);
switch (cable_type) {
case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
/*
* Check power cable whether attached or detached state.
* The Dock-Smart device need surely external power supply.
* If power cable(USB/TA) isn't connected to Dock device,
* user can't use Dock-Smart for desktop mode.
*/
vbvolt = max77693_muic_get_cable_type(info,
MAX77693_CABLE_GROUP_VBVOLT, &cable_attached);
if (attached && !vbvolt) {
dev_warn(info->dev,
"Cannot detect external power supply\n");
return 0;
}
/*
* Notify Dock/MHL state.
* - Dock device include three type of cable which
* are HDMI, USB for mouse/keyboard and micro-usb port
* for USB/TA cable. Dock device need always exteranl
* power supply(USB/TA cable through micro-usb cable). Dock
* device support screen output of target to separate
* monitor and mouse/keyboard for desktop mode.
*
* Features of 'USB/TA cable with Dock device'
* - Support MHL
* - Support external output feature of audio
* - Support charging through micro-usb port without data
* connection if TA cable is connected to target.
* - Support charging and data connection through micro-usb port
* if USB cable is connected between target and host
* device.
* - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard)
*/
ret = max77693_muic_set_path(info, info->path_usb, attached);
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_DOCK, attached);
extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
goto out;
case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */
dock_id = EXTCON_DOCK;
break;
case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
dock_id = EXTCON_DOCK;
if (!attached)
extcon_set_cable_state_(info->edev, EXTCON_USB, false);
break;
default:
dev_err(info->dev, "failed to detect %s dock device\n",
attached ? "attached" : "detached");
return -EINVAL;
}
/* Dock-Car/Desk/Audio, PATH:AUDIO */
ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_AUDIO,
attached);
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, dock_id, attached);
out:
return 0;
}
static irqreturn_t arizona_micdet(int irq, void *data)
{
struct arizona_extcon_info *info = data;
struct arizona *arizona = info->arizona;
unsigned int val;
int ret;
mutex_lock(&info->lock);
ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
if (ret != 0) {
dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret);
return IRQ_NONE;
}
dev_dbg(arizona->dev, "MICDET: %x\n", val);
if (!(val & ARIZONA_MICD_VALID)) {
dev_warn(arizona->dev, "Microphone detection state invalid\n");
mutex_unlock(&info->lock);
return IRQ_NONE;
}
/* Due to jack detect this should never happen */
if (!(val & ARIZONA_MICD_STS)) {
dev_warn(arizona->dev, "Detected open circuit\n");
info->detecting = false;
goto handled;
}
/* If we got a high impedence we should have a headset, report it. */
if (info->detecting && (val & 0x400)) {
ret = extcon_update_state(&info->edev,
1 << ARIZONA_CABLE_MICROPHONE |
1 << ARIZONA_CABLE_HEADPHONE,
1 << ARIZONA_CABLE_MICROPHONE |
1 << ARIZONA_CABLE_HEADPHONE);
if (ret != 0)
dev_err(arizona->dev, "Headset report failed: %d\n",
ret);
info->mic = true;
info->detecting = false;
goto handled;
}
/* If we detected a lower impedence during initial startup
* then we probably have the wrong polarity, flip it. Don't
* do this for the lowest impedences to speed up detection of
* plain headphones. If both polarities report a low
* impedence then give up and report headphones.
*/
if (info->detecting && (val & 0x3f8)) {
info->jack_flips++;
if (info->jack_flips >= info->micd_num_modes) {
dev_dbg(arizona->dev, "Detected headphone\n");
info->detecting = false;
arizona_stop_mic(info);
ret = extcon_set_cable_state_(&info->edev,
ARIZONA_CABLE_HEADPHONE,
true);
if (ret != 0)
dev_err(arizona->dev,
"Headphone report failed: %d\n",
ret);
} else {
info->micd_mode++;
if (info->micd_mode == info->micd_num_modes)
info->micd_mode = 0;
arizona_extcon_set_mode(info, info->micd_mode);
info->jack_flips++;
}
goto handled;
}
/*
* If we're still detecting and we detect a short then we've
* got a headphone. Otherwise it's a button press, the
* button reporting is stubbed out for now.
*/
if (val & 0x3fc) {
if (info->mic) {
dev_dbg(arizona->dev, "Mic button detected\n");
} else if (info->detecting) {
dev_dbg(arizona->dev, "Headphone detected\n");
info->detecting = false;
arizona_stop_mic(info);
ret = extcon_set_cable_state_(&info->edev,
ARIZONA_CABLE_HEADPHONE,
true);
if (ret != 0)
dev_err(arizona->dev,
"Headphone report failed: %d\n",
ret);
} else {
dev_warn(arizona->dev, "Button with no mic: %x\n",
val);
}
} else {
dev_dbg(arizona->dev, "Mic button released\n");
}
handled:
pm_runtime_mark_last_busy(info->dev);
mutex_unlock(&info->lock);
return IRQ_HANDLED;
}
static int max8997_muic_adc_handler(struct max8997_muic_info *info)
{
int cable_type;
bool attached;
int ret = 0;
/* Check cable state which is either detached or attached */
cable_type = max8997_muic_get_cable_type(info,
MAX8997_CABLE_GROUP_ADC, &attached);
switch (cable_type) {
case MAX8997_MUIC_ADC_GROUND:
ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, attached);
if (ret < 0)
return ret;
break;
case MAX8997_MUIC_ADC_MHL:
extcon_set_cable_state_(info->edev, EXTCON_MHL, attached);
break;
case MAX8997_MUIC_ADC_FACTORY_MODE_USB_OFF:
case MAX8997_MUIC_ADC_FACTORY_MODE_USB_ON:
ret = max8997_muic_handle_usb(info,
MAX8997_USB_DEVICE, attached);
if (ret < 0)
return ret;
break;
case MAX8997_MUIC_ADC_AV_CABLE_NOLOAD:
case MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON:
ret = max8997_muic_handle_dock(info, cable_type, attached);
if (ret < 0)
return ret;
break;
case MAX8997_MUIC_ADC_FACTORY_MODE_UART_OFF:
ret = max8997_muic_handle_jig_uart(info, attached);
break;
case MAX8997_MUIC_ADC_REMOTE_S1_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S2_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S3_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S4_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S5_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S6_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S7_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S8_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S9_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S10_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S11_BUTTON:
case MAX8997_MUIC_ADC_REMOTE_S12_BUTTON:
case MAX8997_MUIC_ADC_RESERVED_ACC_1:
case MAX8997_MUIC_ADC_RESERVED_ACC_2:
case MAX8997_MUIC_ADC_RESERVED_ACC_3:
case MAX8997_MUIC_ADC_RESERVED_ACC_4:
case MAX8997_MUIC_ADC_RESERVED_ACC_5:
case MAX8997_MUIC_ADC_CEA936_AUDIO:
case MAX8997_MUIC_ADC_PHONE_POWERED_DEV:
case MAX8997_MUIC_ADC_TTY_CONVERTER:
case MAX8997_MUIC_ADC_UART_CABLE:
case MAX8997_MUIC_ADC_CEA936A_TYPE1_CHG:
case MAX8997_MUIC_ADC_CEA936A_TYPE2_CHG:
case MAX8997_MUIC_ADC_AUDIO_MODE_REMOTE:
/*
* This cable isn't used in general case if it is specially
* needed to detect additional cable, should implement
* proper operation when this cable is attached/detached.
*/
dev_info(info->dev,
"cable is %s but it isn't used (type:0x%x)\n",
attached ? "attached" : "detached", cable_type);
return -EAGAIN;
default:
dev_err(info->dev,
"failed to detect %s unknown cable (type:0x%x)\n",
attached ? "attached" : "detached", cable_type);
return -EINVAL;
}
return 0;
}
