diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2015-06-13 14:37:46 +0200 |
|---|---|---|
| committer | Kishon Vijay Abraham I <kishon@ti.com> | 2015-07-25 15:45:47 +0530 |
| commit | 1a52abe6821da728b41187c6676b6ab7294e6e2c (patch) | |
| tree | 596aa622fcdb5c1822968a047bec57c5a3f51395 /drivers | |
| parent | d2332303efc00d35af7f3d8b025663965862b0e3 (diff) | |
| download | linux-1a52abe6821da728b41187c6676b6ab7294e6e2c.tar.bz2 | |
phy-sun4i-usb: Add extcon support for the otg phy (phy0)
The sunxi musb glue needs to know if a host or normal usb cable is plugged
in, add extcon support so that the musb glue can monitor the host status.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/phy/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/phy/phy-sun4i-usb.c | 32 |
2 files changed, 32 insertions, 1 deletions
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index e2f2a4d394e1..c0c1ad2e2c01 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -208,6 +208,7 @@ config PHY_SUN4I_USB tristate "Allwinner sunxi SoC USB PHY driver" depends on ARCH_SUNXI && HAS_IOMEM && OF depends on RESET_CONTROLLER + depends on EXTCON select GENERIC_PHY help Enable this to support the transceiver that is part of Allwinner diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c index 37f52f73fdba..a6ea2e6b1d5c 100644 --- a/drivers/phy/phy-sun4i-usb.c +++ b/drivers/phy/phy-sun4i-usb.c @@ -23,6 +23,7 @@ #include <linux/clk.h> #include <linux/err.h> +#include <linux/extcon.h> #include <linux/io.h> #include <linux/interrupt.h> #include <linux/kernel.h> @@ -99,6 +100,7 @@ struct sun4i_usb_phy_data { int index; } phys[MAX_PHYS]; /* phy0 / otg related variables */ + struct extcon_dev *extcon; bool phy0_init; bool phy0_poll; struct gpio_desc *id_det_gpio; @@ -343,7 +345,7 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) struct sun4i_usb_phy_data *data = container_of(work, struct sun4i_usb_phy_data, detect.work); struct phy *phy0 = data->phys[0].phy; - int id_det, vbus_det; + int id_det, vbus_det, id_notify = 0, vbus_notify = 0; id_det = gpiod_get_value_cansleep(data->id_det_gpio); vbus_det = gpiod_get_value_cansleep(data->vbus_det_gpio); @@ -358,15 +360,24 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) if (id_det != data->id_det) { sun4i_usb_phy0_set_id_detect(phy0, id_det); data->id_det = id_det; + id_notify = 1; } if (vbus_det != data->vbus_det) { sun4i_usb_phy0_set_vbus_detect(phy0, vbus_det); data->vbus_det = vbus_det; + vbus_notify = 1; } mutex_unlock(&phy0->mutex); + if (id_notify) + extcon_set_cable_state_(data->extcon, EXTCON_USB_HOST, + !id_det); + + if (vbus_notify) + extcon_set_cable_state_(data->extcon, EXTCON_USB, vbus_det); + if (data->phy0_poll) queue_delayed_work(system_wq, &data->detect, POLL_TIME); } @@ -407,6 +418,12 @@ static int sun4i_usb_phy_remove(struct platform_device *pdev) return 0; } +static const unsigned int sun4i_usb_phy0_cable[] = { + EXTCON_USB, + EXTCON_USB_HOST, + EXTCON_NONE, +}; + static int sun4i_usb_phy_probe(struct platform_device *pdev) { struct sun4i_usb_phy_data *data; @@ -466,6 +483,19 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) return -ENODEV; } + if (data->id_det_gpio) { + data->extcon = devm_extcon_dev_allocate(dev, + sun4i_usb_phy0_cable); + if (IS_ERR(data->extcon)) + return PTR_ERR(data->extcon); + + ret = devm_extcon_dev_register(dev, data->extcon); + if (ret) { + dev_err(dev, "failed to register extcon: %d\n", ret); + return ret; + } + } + for (i = 0; i < data->num_phys; i++) { struct sun4i_usb_phy *phy = data->phys + i; char name[16]; |