Hi Hans,
On Sat, Jun 13, 2015 at 9:37 PM, Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
> 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@xxxxxxxxxx>
> ---
> Changes in v5:
> -Split out of the "Add id and vbus detection support" commit
> -Ported to the new extcon API queued for 4.2
> ---
> drivers/phy/Kconfig | 1 +
> drivers/phy/phy-sun4i-usb.c | 32 +++++++++++++++++++++++++++++++-
> 2 files changed, 32 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> index a53bd5b..9841780 100644
> --- a/drivers/phy/Kconfig
> +++ b/drivers/phy/Kconfig
> @@ -173,6 +173,7 @@ 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 bdf63ad..86d9ce1 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];
Looks good to me about or extcon part.
Acked-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Thanks,
Chanwoo Choi
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