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Diffstat (limited to 'drivers/extcon')
-rw-r--r--drivers/extcon/extcon-max77693.c255
1 files changed, 216 insertions, 39 deletions
diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
index 26ce4dfeda10..07ea96bfd0cb 100644
--- a/drivers/extcon/extcon-max77693.c
+++ b/drivers/extcon/extcon-max77693.c
@@ -19,6 +19,7 @@
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
+#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/err.h>
#include <linux/platform_device.h>
@@ -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;
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-16 18:00:16 +0300