diff options
Diffstat (limited to 'drivers/extcon/extcon-ptn5150.c')
| -rw-r--r-- | drivers/extcon/extcon-ptn5150.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/extcon/extcon-ptn5150.c b/drivers/extcon/extcon-ptn5150.c index 5b9a3cf8df26..017a07197f38 100644 --- a/drivers/extcon/extcon-ptn5150.c +++ b/drivers/extcon/extcon-ptn5150.c @@ -17,6 +17,7 @@ #include <linux/slab.h> #include <linux/extcon-provider.h> #include <linux/gpio/consumer.h> +#include <linux/usb/role.h> /* PTN5150 registers */ #define PTN5150_REG_DEVICE_ID 0x01 @@ -52,6 +53,7 @@ struct ptn5150_info { int irq; struct work_struct irq_work; struct mutex mutex; + struct usb_role_switch *role_sw; }; /* List of detectable cables */ @@ -70,6 +72,7 @@ static const struct regmap_config ptn5150_regmap_config = { static void ptn5150_check_state(struct ptn5150_info *info) { unsigned int port_status, reg_data, vbus; + enum usb_role usb_role = USB_ROLE_NONE; int ret; ret = regmap_read(info->regmap, PTN5150_REG_CC_STATUS, ®_data); @@ -85,6 +88,7 @@ static void ptn5150_check_state(struct ptn5150_info *info) extcon_set_state_sync(info->edev, EXTCON_USB_HOST, false); gpiod_set_value_cansleep(info->vbus_gpiod, 0); extcon_set_state_sync(info->edev, EXTCON_USB, true); + usb_role = USB_ROLE_DEVICE; break; case PTN5150_UFP_ATTACHED: extcon_set_state_sync(info->edev, EXTCON_USB, false); @@ -95,10 +99,18 @@ static void ptn5150_check_state(struct ptn5150_info *info) gpiod_set_value_cansleep(info->vbus_gpiod, 1); extcon_set_state_sync(info->edev, EXTCON_USB_HOST, true); + usb_role = USB_ROLE_HOST; break; default: break; } + + if (usb_role) { + ret = usb_role_switch_set_role(info->role_sw, usb_role); + if (ret) + dev_err(info->dev, "failed to set %s role: %d\n", + usb_role_string(usb_role), ret); + } } static void ptn5150_irq_work(struct work_struct *work) @@ -133,6 +145,13 @@ static void ptn5150_irq_work(struct work_struct *work) extcon_set_state_sync(info->edev, EXTCON_USB, false); gpiod_set_value_cansleep(info->vbus_gpiod, 0); + + ret = usb_role_switch_set_role(info->role_sw, + USB_ROLE_NONE); + if (ret) + dev_err(info->dev, + "failed to set none role: %d\n", + ret); } } @@ -194,6 +213,14 @@ static int ptn5150_init_dev_type(struct ptn5150_info *info) return 0; } +static void ptn5150_work_sync_and_put(void *data) +{ + struct ptn5150_info *info = data; + + cancel_work_sync(&info->irq_work); + usb_role_switch_put(info->role_sw); +} + static int ptn5150_i2c_probe(struct i2c_client *i2c) { struct device *dev = &i2c->dev; @@ -284,6 +311,15 @@ static int ptn5150_i2c_probe(struct i2c_client *i2c) if (ret) return -EINVAL; + info->role_sw = usb_role_switch_get(info->dev); + if (IS_ERR(info->role_sw)) + return dev_err_probe(info->dev, PTR_ERR(info->role_sw), + "failed to get role switch\n"); + + ret = devm_add_action_or_reset(dev, ptn5150_work_sync_and_put, info); + if (ret) + return ret; + /* * Update current extcon state if for example OTG connection was there * before the probe |