forked from Minki/linux
extcon: max77693: Add support Dock-Smart device for desktop mode
This patch support the detection of Dock-Smart device which include three type of port(HDMI, USB for mouse/keyboard and Micro-USB for USB/TA cable).The 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 'Dock-Smart device' - Support HDMI - 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) Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
This commit is contained in:
Chanwoo Choi
parent
0e2738f59c
commit
a162629859
@ -442,6 +442,8 @@ static int max77693_muic_dock_handler(struct max77693_muic_info *info,
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int cable_type, bool attached)
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{
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int ret = 0;
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int vbvolt;
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bool cable_attached;
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char dock_name[CABLE_NAME_MAX];
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dev_info(info->dev,
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@ -450,14 +452,45 @@ static int max77693_muic_dock_handler(struct max77693_muic_info *info,
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switch (cable_type) {
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case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
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/* PATH:AP_USB */
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ret = max77693_muic_set_path(info,
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CONTROL1_SW_USB, attached);
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if (ret < 0)
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goto out;
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/*
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* Check power cable whether attached or detached state.
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* The Dock-Smart device need surely external power supply.
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* If power cable(USB/TA) isn't connected to Dock device,
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* user can't use Dock-Smart for desktop mode.
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*/
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vbvolt = max77693_muic_get_cable_type(info,
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MAX77693_CABLE_GROUP_VBVOLT, &cable_attached);
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if (attached && !vbvolt) {
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dev_warn(info->dev,
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"Cannot detect external power supply\n");
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return 0;
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}
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/*
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* Notify Dock-Smart/MHL state.
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* - Dock-Smart device include three type of cable which
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* are HDMI, USB for mouse/keyboard and micro-usb port
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* for USB/TA cable. Dock-Smart device need always exteranl
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* power supply(USB/TA cable through micro-usb cable). Dock-
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* Smart device support screen output of target to separate
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* monitor and mouse/keyboard for desktop mode.
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*
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* Features of 'USB/TA cable with Dock-Smart device'
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* - Support MHL
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* - Support external output feature of audio
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* - Support charging through micro-usb port without data
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* connection if TA cable is connected to target.
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* - Support charging and data connection through micro-usb port
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* if USB cable is connected between target and host
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* device.
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* - Support OTG device (Mouse/Keyboard)
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*/
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ret = max77693_muic_set_path(info, info->path_usb, attached);
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if (ret < 0)
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return ret;
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/* Dock-Smart */
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extcon_set_cable_state(info->edev, "Dock-Smart", attached);
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extcon_set_cable_state(info->edev, "MHL", attached);
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goto out;
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case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */
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strcpy(dock_name, "Dock-Car");
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@ -475,11 +508,11 @@ static int max77693_muic_dock_handler(struct max77693_muic_info *info,
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/* Dock-Car/Desk/Audio, PATH:AUDIO */
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ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
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if (ret < 0)
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goto out;
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return ret;
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extcon_set_cable_state(info->edev, dock_name, attached);
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out:
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return ret;
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return 0;
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}
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static int max77693_muic_dock_button_handler(struct max77693_muic_info *info,
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@ -737,80 +770,125 @@ static int max77693_muic_chg_handler(struct max77693_muic_info *info)
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switch (chg_type) {
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case MAX77693_CHARGER_TYPE_USB:
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case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
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case MAX77693_CHARGER_TYPE_NONE:
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/*
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* MHL_TA(USB/TA) with MHL cable
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* - MHL cable include two port(HDMI line and separate micro
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* -usb port. When the target connect MHL cable, extcon driver
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* check whether MHL_TA(USB/TA) cable is connected. If MHL_TA
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* cable is connected, extcon driver notify state to notifiee
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* for charging battery.
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*/
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/* Check MAX77693_CABLE_GROUP_ADC_GND type */
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cable_type_gnd = max77693_muic_get_cable_type(info,
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MAX77693_CABLE_GROUP_ADC_GND,
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&cable_attached);
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if (cable_type_gnd == MAX77693_MUIC_GND_MHL
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|| cable_type_gnd == MAX77693_MUIC_GND_MHL_VB) {
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switch (cable_type_gnd) {
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case MAX77693_MUIC_GND_MHL:
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case MAX77693_MUIC_GND_MHL_VB:
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/*
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* MHL cable with MHL_TA(USB/TA) cable
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* - MHL cable include two port(HDMI line and separate micro-
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* usb port. When the target connect MHL cable, extcon driver
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* check whether MHL_TA(USB/TA) cable is connected. If MHL_TA
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* cable is connected, extcon driver notify state to notifiee
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* for charging battery.
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*
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* Features of 'MHL_TA(USB/TA) with MHL cable'
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* - Support MHL
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* - Support charging through micro-usb port without data connection
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*/
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extcon_set_cable_state(info->edev, "MHL_TA", attached);
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if (!cable_attached)
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extcon_set_cable_state(info->edev,
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"MHL", false);
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goto out;
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extcon_set_cable_state(info->edev, "MHL", cable_attached);
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break;
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}
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/*
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* USB/TA cable with Dock-Audio device
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* - Dock device include two port(Dock-Audio and micro-usb
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* port). When the target connect Dock-Audio device, extcon
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* driver check whether USB/TA cable is connected.
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* If USB/TA cable is connected, extcon driver notify state
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* to notifiee for charging battery.
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*/
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/* Check MAX77693_CABLE_GROUP_ADC type */
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cable_type = max77693_muic_get_cable_type(info,
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MAX77693_CABLE_GROUP_ADC,
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&cable_attached);
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if (cable_type == MAX77693_MUIC_ADC_AV_CABLE_NOLOAD) {
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switch (cable_type) {
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case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
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/*
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* Dock-Audio device with USB/TA cable
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* - Dock device include two port(Dock-Audio and micro-usb
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* port). When the target connect Dock-Audio device, extcon
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* driver check whether USB/TA cable is connected. If USB/TA
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* cable is connected, extcon driver notify state to notifiee
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* for charging battery.
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*
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* Features of 'USB/TA cable with Dock-Audio device'
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* - Support external output feature of audio.
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* - Support charging through micro-usb port without data
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* connection.
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*/
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extcon_set_cable_state(info->edev, "USB", attached);
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if (!cable_attached)
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extcon_set_cable_state(info->edev,
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"Dock-Audio", false);
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goto out;
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extcon_set_cable_state(info->edev, "Dock-Audio", cable_attached);
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break;
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case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
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/*
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* Dock-Smart device with USB/TA cable
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* - Dock-Desk device include three type of cable which
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* are HDMI, USB for mouse/keyboard and micro-usb port
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* for USB/TA cable. Dock-Smart device need always exteranl
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* power supply(USB/TA cable through micro-usb cable). Dock-
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* Smart device support screen output of target to separate
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* monitor and mouse/keyboard for desktop mode.
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*
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* Features of 'USB/TA cable with Dock-Smart device'
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* - Support MHL
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* - Support external output feature of audio
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* - Support charging through micro-usb port without data
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* connection if TA cable is connected to target.
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* - Support charging and data connection through micro-usb port
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* if USB cable is connected between target and host
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* device.
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* - Support OTG device (Mouse/Keyboard)
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*/
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ret = max77693_muic_set_path(info, info->path_usb, attached);
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if (ret < 0)
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return ret;
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extcon_set_cable_state(info->edev, "Dock-Smart", attached);
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extcon_set_cable_state(info->edev, "MHL", attached);
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break;
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}
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/*
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* When MHL(with USB/TA cable) or Dock-Audio with USB/TA cable
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* is attached, muic device happen below two interrupt.
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* - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting MHL/Dock-Audio.
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* - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting USB/TA cable
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* connected to MHL or Dock-Audio.
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* Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC interrupt
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* than MAX77693_MUIC_IRQ_INT2_CHGTYP interrupt.
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*
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* If user attach MHL (with USB/TA cable and immediately detach
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* MHL with USB/TA cable before MAX77693_MUIC_IRQ_INT2_CHGTYP
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* interrupt is happened, USB/TA cable remain connected state to
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* target. But USB/TA cable isn't connected to target. The user
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* be face with unusual action. So, driver should check this
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* situation in spite of, that previous charger type is N/A.
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*/
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if (chg_type == MAX77693_CHARGER_TYPE_NONE)
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/* Check MAX77693_CABLE_GROUP_CHG type */
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switch (chg_type) {
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case MAX77693_CHARGER_TYPE_NONE:
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/*
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* When MHL(with USB/TA cable) or Dock-Audio with USB/TA cable
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* is attached, muic device happen below two interrupt.
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* - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting MHL/Dock-Audio.
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* - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting USB/TA cable
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* connected to MHL or Dock-Audio.
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* Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC interrupt
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* than MAX77693_MUIC_IRQ_INT2_CHGTYP interrupt.
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*
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* If user attach MHL (with USB/TA cable and immediately detach
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* MHL with USB/TA cable before MAX77693_MUIC_IRQ_INT2_CHGTYP
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* interrupt is happened, USB/TA cable remain connected state to
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* target. But USB/TA cable isn't connected to target. The user
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* be face with unusual action. So, driver should check this
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* situation in spite of, that previous charger type is N/A.
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*/
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break;
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case MAX77693_CHARGER_TYPE_USB:
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/* Only USB cable, PATH:AP_USB */
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ret = max77693_muic_set_path(info, info->path_usb, attached);
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if (ret < 0)
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return ret;
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/* Only USB cable, PATH:AP_USB */
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ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached);
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if (ret < 0)
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goto out;
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extcon_set_cable_state(info->edev, "USB", attached);
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extcon_set_cable_state(info->edev, "USB", attached);
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break;
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case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
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/* Only TA cable */
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extcon_set_cable_state(info->edev, "TA", attached);
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break;
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}
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break;
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case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT:
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extcon_set_cable_state(info->edev,
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"Charge-downstream", attached);
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break;
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case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
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extcon_set_cable_state(info->edev, "TA", attached);
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break;
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case MAX77693_CHARGER_TYPE_APPLE_500MA:
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extcon_set_cable_state(info->edev, "Slow-charger", attached);
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break;
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@ -823,12 +901,10 @@ static int max77693_muic_chg_handler(struct max77693_muic_info *info)
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dev_err(info->dev,
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"failed to detect %s accessory (chg_type:0x%x)\n",
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attached ? "attached" : "detached", chg_type);
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ret = -EINVAL;
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goto out;
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return -EINVAL;
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}
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out:
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return ret;
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return 0;
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}
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static void max77693_muic_irq_work(struct work_struct *work)
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