diff options
| author | Chanwoo Choi <cw00.choi@samsung.com> | 2012-11-27 06:30:35 +0400 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2013-01-15 10:42:15 +0400 |
| commit | 06bed0afa24e98b9afa26456c6bed37a6510f7d1 (patch) | |
| tree | d4d4bc2f8da8a15171c34fe516849f9ab808b158 /drivers/extcon/extcon-max77693.c | |
| parent | 154f757fd315270e42bd17f4a68d84bd070e5758 (diff) | |
| download | linux-06bed0afa24e98b9afa26456c6bed37a6510f7d1.tar.xz | |
extcon: max77693: Add support MHL_TA cable for charging battery
This patch support MHL_TA cable for charging battery. The MHL_TA
cable include MHL with TA cable or MHL with micro USB cable. When
MHL with TA/USB cable is attached, extcon-max77693 driver detect
two interrupt for handling precise operation according to each cable
(MHL and TA/USB cable).
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Diffstat (limited to 'drivers/extcon/extcon-max77693.c')
| -rw-r--r-- | drivers/extcon/extcon-max77693.c | 56 |
1 files changed, 45 insertions, 11 deletions
diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c index e84d5dc06798..78dc7505b965 100644 --- a/drivers/extcon/extcon-max77693.c +++ b/drivers/extcon/extcon-max77693.c @@ -136,9 +136,11 @@ enum max77693_muic_acc_type { /* The below accessories have same ADC value so ADCLow and ADC1K bit is used to separate specific accessory */ - MAX77693_MUIC_GND_USB_OTG = 0x100, /* ADC:0x0, ADCLow:0, ADC1K:0 */ - MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* ADC:0x0, ADCLow:1, ADC1K:0 */ - MAX77693_MUIC_GND_MHL_CABLE = 0x103, /* ADC:0x0, ADCLow:1, ADC1K:1 */ + MAX77693_MUIC_GND_USB_OTG = 0x100, /* ADC:0x0, VBVolot:0, ADCLow:0, ADC1K:0 */ + MAX77693_MUIC_GND_USB_OTG_VB = 0x104, /* ADC:0x0, VBVolot:1, ADCLow:0, ADC1K:0 */ + MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:0 */ + MAX77693_MUIC_GND_MHL = 0x103, /* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:1 */ + MAX77693_MUIC_GND_MHL_VB = 0x107, /* ADC:0x0, VBVolot:1, ADCLow:1, ADC1K:1 */ }; /* MAX77693 MUIC device support below list of accessories(external connector) */ @@ -150,6 +152,7 @@ enum { EXTCON_CABLE_SLOW_CHARGER, EXTCON_CABLE_CHARGE_DOWNSTREAM, EXTCON_CABLE_MHL, + EXTCON_CABLE_MHL_TA, EXTCON_CABLE_AUDIO_VIDEO_LOAD, EXTCON_CABLE_AUDIO_VIDEO_NOLOAD, EXTCON_CABLE_JIG, @@ -165,6 +168,7 @@ const char *max77693_extcon_cable[] = { [EXTCON_CABLE_SLOW_CHARGER] = "Slow-charger", [EXTCON_CABLE_CHARGE_DOWNSTREAM] = "Charge-downstream", [EXTCON_CABLE_MHL] = "MHL", + [EXTCON_CABLE_MHL_TA] = "MHL_TA", [EXTCON_CABLE_AUDIO_VIDEO_LOAD] = "Audio-video-load", [EXTCON_CABLE_AUDIO_VIDEO_NOLOAD] = "Audio-video-noload", [EXTCON_CABLE_JIG] = "JIG", @@ -330,6 +334,7 @@ static int max77693_muic_get_cable_type(struct max77693_muic_info *info, /** * [0x1][VBVolt][ADCLow][ADC1K] * [0x1 0 0 0 ] : USB_OTG + * [0x1 1 0 0 ] : USB_OTG_VB * [0x1 0 1 0 ] : Audio Video Cable with load * [0x1 0 1 1 ] : MHL without charging connector * [0x1 1 1 1 ] : MHL with charging connector @@ -414,22 +419,24 @@ static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) switch (cable_type_gnd) { case MAX77693_MUIC_GND_USB_OTG: - /* USB_OTG */ + case MAX77693_MUIC_GND_USB_OTG_VB: + /* USB_OTG, 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-Host", attached); break; case MAX77693_MUIC_GND_AV_CABLE_LOAD: - /* Audio Video Cable with load */ + /* Audio Video Cable with load, PATH:AUDIO */ ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); if (ret < 0) goto out; extcon_set_cable_state(info->edev, "Audio-video-load", attached); break; - case MAX77693_MUIC_GND_MHL_CABLE: - /* MHL */ + case MAX77693_MUIC_GND_MHL: + case MAX77693_MUIC_GND_MHL_VB: + /* MHL or MHL with USB/TA cable */ extcon_set_cable_state(info->edev, "MHL", attached); break; default: @@ -528,7 +535,9 @@ out: static int max77693_muic_chg_handler(struct max77693_muic_info *info) { int chg_type; + int cable_type_gnd; bool attached; + bool cable_attached; int ret = 0; chg_type = max77693_muic_get_cable_type(info, @@ -541,10 +550,35 @@ static int max77693_muic_chg_handler(struct max77693_muic_info *info) switch (chg_type) { case MAX77693_CHARGER_TYPE_USB: - ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); - if (ret < 0) - goto out; - extcon_set_cable_state(info->edev, "USB", attached); + 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. + */ + 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; + extcon_set_cable_state(info->edev, "USB", attached); + } break; case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: extcon_set_cable_state(info->edev, |