int cable_type, bool attached)
{
int ret = 0;
+ int vbvolt;
+ bool cable_attached;
char dock_name[CABLE_NAME_MAX];
dev_info(info->dev,
switch (cable_type) {
case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
- /* PATH:AP_USB */
- ret = max77693_muic_set_path(info,
- CONTROL1_SW_USB, attached);
+ /*
+ * 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-Smart/MHL state.
+ * - Dock-Smart 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 device (Mouse/Keyboard)
+ */
+ ret = max77693_muic_set_path(info, info->path_usb, attached);
if (ret < 0)
- goto out;
+ return ret;
- /* Dock-Smart */
extcon_set_cable_state(info->edev, "Dock-Smart", attached);
+ extcon_set_cable_state(info->edev, "MHL", attached);
goto out;
case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */
strcpy(dock_name, "Dock-Car");
/* Dock-Car/Desk/Audio, PATH:AUDIO */
ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
if (ret < 0)
- goto out;
+ return ret;
extcon_set_cable_state(info->edev, dock_name, attached);
out:
- return ret;
+ return 0;
}
static int max77693_muic_dock_button_handler(struct max77693_muic_info *info,
switch (chg_type) {
case MAX77693_CHARGER_TYPE_USB:
+ case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
case MAX77693_CHARGER_TYPE_NONE:
- /*
- * MHL_TA(USB/TA) with MHL cable
- * - MHL cable include two port(HDMI line and separate micro
- * -usb port. When the target connect MHL cable, extcon driver
- * check whether MHL_TA(USB/TA) cable is connected. If MHL_TA
- * cable is connected, extcon driver notify state to notifiee
- * for charging battery.
- */
+ /* Check MAX77693_CABLE_GROUP_ADC_GND type */
cable_type_gnd = max77693_muic_get_cable_type(info,
MAX77693_CABLE_GROUP_ADC_GND,
&cable_attached);
- if (cable_type_gnd == MAX77693_MUIC_GND_MHL
- || cable_type_gnd == MAX77693_MUIC_GND_MHL_VB) {
+ switch (cable_type_gnd) {
+ case MAX77693_MUIC_GND_MHL:
+ case MAX77693_MUIC_GND_MHL_VB:
+ /*
+ * MHL cable with MHL_TA(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 MHL_TA(USB/TA) cable is connected. If MHL_TA
+ * cable is connected, extcon driver notify state to notifiee
+ * for charging battery.
+ *
+ * Features of 'MHL_TA(USB/TA) with MHL cable'
+ * - Support MHL
+ * - Support charging through micro-usb port without data connection
+ */
extcon_set_cable_state(info->edev, "MHL_TA", attached);
-
if (!cable_attached)
- extcon_set_cable_state(info->edev,
- "MHL", false);
- goto out;
+ extcon_set_cable_state(info->edev, "MHL", cable_attached);
+ break;
}
- /*
- * USB/TA cable with Dock-Audio device
- * - 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.
- * If USB/TA cable is connected, extcon driver notify state
- * to notifiee for charging battery.
- */
+ /* Check MAX77693_CABLE_GROUP_ADC type */
cable_type = max77693_muic_get_cable_type(info,
MAX77693_CABLE_GROUP_ADC,
&cable_attached);
- if (cable_type == MAX77693_MUIC_ADC_AV_CABLE_NOLOAD) {
+ 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. 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, "USB", attached);
if (!cable_attached)
- extcon_set_cable_state(info->edev,
- "Dock-Audio", false);
- goto out;
+ extcon_set_cable_state(info->edev, "Dock-Audio", 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 device (Mouse/Keyboard)
+ */
+ ret = max77693_muic_set_path(info, info->path_usb, attached);
+ if (ret < 0)
+ return ret;
+
+ extcon_set_cable_state(info->edev, "Dock-Smart", attached);
+ extcon_set_cable_state(info->edev, "MHL", attached);
+
+ break;
}
- /*
- * When MHL(with USB/TA cable) or Dock-Audio with USB/TA cable
- * is attached, muic device happen below two interrupt.
- * - '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 interrupt
- * than MAX77693_MUIC_IRQ_INT2_CHGTYP interrupt.
- *
- * If user attach MHL (with USB/TA cable and immediately detach
- * MHL with USB/TA cable before MAX77693_MUIC_IRQ_INT2_CHGTYP
- * interrupt 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.
- */
- if (chg_type == MAX77693_CHARGER_TYPE_NONE)
+ /* 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 interrupt.
+ * - '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 interrupt
+ * than MAX77693_MUIC_IRQ_INT2_CHGTYP interrupt.
+ *
+ * If user attach MHL (with USB/TA cable and immediately detach
+ * MHL with USB/TA cable before MAX77693_MUIC_IRQ_INT2_CHGTYP
+ * interrupt 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;
- /* Only USB cable, PATH:AP_USB */
- ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached);
- if (ret < 0)
- goto out;
- extcon_set_cable_state(info->edev, "USB", attached);
+ extcon_set_cable_state(info->edev, "USB", attached);
+ break;
+ case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
+ /* Only TA cable */
+ extcon_set_cable_state(info->edev, "TA", attached);
+ break;
+ }
break;
case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT:
extcon_set_cable_state(info->edev,
"Charge-downstream", attached);
break;
- case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
- extcon_set_cable_state(info->edev, "TA", attached);
- break;
case MAX77693_CHARGER_TYPE_APPLE_500MA:
extcon_set_cable_state(info->edev, "Slow-charger", attached);
break;
dev_err(info->dev,
"failed to detect %s accessory (chg_type:0x%x)\n",
attached ? "attached" : "detached", chg_type);
- ret = -EINVAL;
- goto out;
+ return -EINVAL;
}
-out:
- return ret;
+ return 0;
}
static void max77693_muic_irq_work(struct work_struct *work)
projects / kernel / kernel-generic.git / commitdiff