From 39bf369e4ed321158eb8dc5031b4a9f2108ea614 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Mon, 3 Dec 2012 13:09:41 +0900 Subject: [PATCH] extcon: max77693: Add support dock device and buttons This patch support detection of dock device with extcon and buttons of dock device for playing music with input subsystem. Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- drivers/extcon/extcon-max77693.c | 255 ++++++++++++++++++++++++++----- 1 file changed, 216 insertions(+), 39 deletions(-) diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c index 26ce4dfeda1..07ea96bfd0c 100644 --- a/drivers/extcon/extcon-max77693.c +++ b/drivers/extcon/extcon-max77693.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -44,11 +45,15 @@ struct max77693_muic_info { int prev_cable_type; int prev_cable_type_gnd; int prev_chg_type; + int prev_button_type; u8 status[2]; int irq; struct work_struct irq_work; struct mutex mutex; + + /* Button of dock device */ + struct input_dev *dock; }; enum max77693_muic_cable_group { @@ -156,7 +161,10 @@ enum { EXTCON_CABLE_JIG_USB_ON, EXTCON_CABLE_JIG_USB_OFF, EXTCON_CABLE_JIG_UART_OFF, - EXTCON_CABLE_AUDIO_VIDEO_LOAD, + EXTCON_CABLE_JIG_UART_ON, + EXTCON_CABLE_DOCK_SMART, + EXTCON_CABLE_DOCK_DESK, + EXTCON_CABLE_DOCK_AUDIO, _EXTCON_CABLE_NUM, }; @@ -173,7 +181,10 @@ const char *max77693_extcon_cable[] = { [EXTCON_CABLE_JIG_USB_ON] = "JIG-USB-ON", [EXTCON_CABLE_JIG_USB_OFF] = "JIG-USB-OFF", [EXTCON_CABLE_JIG_UART_OFF] = "JIG-UART-OFF", - [EXTCON_CABLE_AUDIO_VIDEO_LOAD] = "Audio-video-load", + [EXTCON_CABLE_JIG_UART_ON] = "Dock-Car", + [EXTCON_CABLE_DOCK_SMART] = "Dock-Smart", + [EXTCON_CABLE_DOCK_DESK] = "Dock-Desk", + [EXTCON_CABLE_DOCK_AUDIO] = "Dock-Audio", NULL, }; @@ -411,6 +422,96 @@ static int max77693_muic_get_cable_type(struct max77693_muic_info *info, return cable_type; } +static int max77693_muic_dock_handler(struct max77693_muic_info *info, + int cable_type, bool attached) +{ + int ret = 0; + char dock_name[CABLE_NAME_MAX]; + + 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 */ + /* PATH:AP_USB */ + ret = max77693_muic_set_path(info, + CONTROL1_SW_USB, attached); + if (ret < 0) + goto out; + + /* Dock-Smart */ + extcon_set_cable_state(info->edev, "Dock-Smart", attached); + goto out; + case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ + strcpy(dock_name, "Dock-Car"); + break; + case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ + strcpy(dock_name, "Dock-Desk"); + break; + case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ + strcpy(dock_name, "Dock-Audio"); + if (!attached) + extcon_set_cable_state(info->edev, "USB", false); + break; + } + + /* Dock-Car/Desk/Audio, PATH:AUDIO */ + ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); + if (ret < 0) + goto out; + extcon_set_cable_state(info->edev, dock_name, attached); + +out: + return ret; +} + +static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, + int button_type, bool attached) +{ + struct input_dev *dock = info->dock; + unsigned int code; + int ret = 0; + + switch (button_type) { + case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 + ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: + /* DOCK_KEY_PREV */ + code = KEY_PREVIOUSSONG; + break; + case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 + ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: + /* DOCK_KEY_NEXT */ + code = KEY_NEXTSONG; + break; + case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: + /* DOCK_VOL_DOWN */ + code = KEY_VOLUMEDOWN; + break; + case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: + /* DOCK_VOL_UP */ + code = KEY_VOLUMEUP; + break; + case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 + ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: + /* DOCK_KEY_PLAY_PAUSE */ + code = KEY_PLAYPAUSE; + break; + default: + dev_err(info->dev, + "failed to detect %s key (adc:0x%x)\n", + attached ? "pressed" : "released", button_type); + ret = -EINVAL; + goto out; + } + + input_event(dock, EV_KEY, code, attached); + input_sync(dock); + +out: + return 0; +} + static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) { int cable_type_gnd; @@ -494,6 +595,7 @@ out: static int max77693_muic_adc_handler(struct max77693_muic_info *info) { int cable_type; + int button_type; bool attached; int ret = 0; @@ -519,31 +621,58 @@ static int max77693_muic_adc_handler(struct max77693_muic_info *info) if (ret < 0) goto out; break; - case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: - case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: - /* Audio Video cable with no-load */ - ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); + case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ + case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ + case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ + case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ + /* + * DOCK device + * + * The MAX77693 MUIC device can detect total 34 cable type + * except of charger cable and MUIC device didn't define + * specfic role of cable in the range of from 0x01 to 0x12 + * of ADC value. So, can use/define cable with no role according + * to schema of hardware board. + */ + ret = max77693_muic_dock_handler(info, cable_type, attached); + if (ret < 0) + goto out; + break; + case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ + case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ + case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ + case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ + case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ + /* + * Button of DOCK device + * - the Prev/Next/Volume Up/Volume Down/Play-Pause button + * + * The MAX77693 MUIC device can detect total 34 cable type + * except of charger cable and MUIC device didn't define + * specfic role of cable in the range of from 0x01 to 0x12 + * of ADC value. So, can use/define cable with no role according + * to schema of hardware board. + */ + if (attached) + button_type = info->prev_button_type = cable_type; + else + button_type = info->prev_button_type; + + ret = max77693_muic_dock_button_handler(info, button_type, + attached); if (ret < 0) goto out; - extcon_set_cable_state(info->edev, - "Audio-video-noload", attached); break; case MAX77693_MUIC_ADC_SEND_END_BUTTON: case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: - case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: - case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: - case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: - case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: - case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: case MAX77693_MUIC_ADC_RESERVED_ACC_1: case MAX77693_MUIC_ADC_RESERVED_ACC_2: - case MAX77693_MUIC_ADC_RESERVED_ACC_3: case MAX77693_MUIC_ADC_RESERVED_ACC_4: case MAX77693_MUIC_ADC_RESERVED_ACC_5: case MAX77693_MUIC_ADC_CEA936_AUDIO: @@ -551,11 +680,12 @@ static int max77693_muic_adc_handler(struct max77693_muic_info *info) case MAX77693_MUIC_ADC_TTY_CONVERTER: case MAX77693_MUIC_ADC_UART_CABLE: case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: - case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: - /* This accessory isn't used in general case if it is specially - needed to detect additional accessory, should implement - proper operation when this accessory is attached/detached. */ + /* + * This accessory isn't used in general case if it is specially + * needed to detect additional accessory, should implement + * proper operation when this accessory is attached/detached. + */ dev_info(info->dev, "accessory is %s but it isn't used (adc:0x%x)\n", attached ? "attached" : "detached", cable_type); @@ -576,6 +706,7 @@ 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; @@ -590,35 +721,52 @@ static int max77693_muic_chg_handler(struct max77693_muic_info *info) switch (chg_type) { case MAX77693_CHARGER_TYPE_USB: + /* + * 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. + */ 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: - /* - * USB/TA with MHL cable - * - MHL cable, which connect micro USB or TA cable, - * is used to charging battery. So, extcon driver check - * charging type whether micro USB or TA cable is - * connected to MHL cable when extcon driver detect MHL - * cable. - */ + if (cable_type_gnd == MAX77693_MUIC_GND_MHL + || cable_type_gnd == MAX77693_MUIC_GND_MHL_VB) { extcon_set_cable_state(info->edev, "MHL_TA", attached); if (!cable_attached) extcon_set_cable_state(info->edev, - "MHL", false); - break; - default: - /* Only USB cable, PATH:AP_USB */ - ret = max77693_muic_set_path(info, CONTROL1_SW_USB, - attached); - if (ret < 0) - goto out; + "MHL", false); + goto out; + } + + /* + * 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. + */ + cable_type = max77693_muic_get_cable_type(info, + MAX77693_CABLE_GROUP_ADC, + &cable_attached); + if (cable_type == MAX77693_MUIC_ADC_AV_CABLE_NOLOAD) { extcon_set_cable_state(info->edev, "USB", attached); + + if (!cable_attached) + extcon_set_cable_state(info->edev, + "Dock-Audio", false); + goto out; } + + /* 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); break; case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: extcon_set_cable_state(info->edev, @@ -794,6 +942,32 @@ static int max77693_muic_probe(struct platform_device *pdev) return ret; } } + + /* Register input device for button of dock device */ + info->dock = input_allocate_device(); + if (!info->dock) { + dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); + return -ENOMEM; + } + info->dock->name = "max77693-muic/dock"; + info->dock->phys = "max77693-muic/extcon"; + info->dock->dev.parent = &pdev->dev; + + __set_bit(EV_REP, info->dock->evbit); + + input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); + input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); + input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); + input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); + input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); + + ret = input_register_device(info->dock); + if (ret < 0) { + dev_err(&pdev->dev, "Cannot register input device error(%d)\n", + ret); + return ret; + } + platform_set_drvdata(pdev, info); mutex_init(&info->mutex); @@ -870,7 +1044,7 @@ static int max77693_muic_probe(struct platform_device *pdev) MAX77693_MUIC_REG_ID, &id); if (ret < 0) { dev_err(&pdev->dev, "failed to read revision number\n"); - goto err_irq; + goto err_extcon; } dev_info(info->dev, "device ID : 0x%x\n", id); @@ -882,6 +1056,8 @@ static int max77693_muic_probe(struct platform_device *pdev) return ret; +err_extcon: + extcon_dev_unregister(info->edev); err_irq: while (--i >= 0) free_irq(muic_irqs[i].virq, info); @@ -896,6 +1072,7 @@ static int max77693_muic_remove(struct platform_device *pdev) for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) free_irq(muic_irqs[i].virq, info); cancel_work_sync(&info->irq_work); + input_unregister_device(info->dock); extcon_dev_unregister(info->edev); return 0; -- 2.20.1