Hi Yoshihiro,
On 2016년 03월 03일 19:09, Yoshihiro Shimoda wrote:
> This patch adds extcon support for otg related channel.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> ---
> drivers/phy/Kconfig | 1 +
> drivers/phy/phy-rcar-gen3-usb2.c | 26 ++++++++++++++++++++++++++
> 2 files changed, 27 insertions(+)
>
> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> index ba68f14..db57d6c 100644
> --- a/drivers/phy/Kconfig
> +++ b/drivers/phy/Kconfig
> @@ -121,6 +121,7 @@ config PHY_RCAR_GEN2
> config PHY_RCAR_GEN3_USB2
> tristate "Renesas R-Car generation 3 USB 2.0 PHY driver"
> depends on OF && ARCH_RENESAS
> + depends on EXTCON
> select GENERIC_PHY
> help
> Support for USB 2.0 PHY found on Renesas R-Car generation 3 SoCs.
> diff --git a/drivers/phy/phy-rcar-gen3-usb2.c b/drivers/phy/phy-rcar-gen3-usb2.c
> index 7b14244..76bb88f 100644
> --- a/drivers/phy/phy-rcar-gen3-usb2.c
> +++ b/drivers/phy/phy-rcar-gen3-usb2.c
> @@ -12,6 +12,7 @@
> * published by the Free Software Foundation.
> */
>
> +#include <linux/extcon.h>
> #include <linux/interrupt.h>
> #include <linux/io.h>
> #include <linux/module.h>
> @@ -77,6 +78,7 @@
>
> struct rcar_gen3_chan {
> void __iomem *base;
> + struct extcon_dev *extcon;
> struct phy *phy;
> struct regulator *vbus;
> bool has_otg;
> @@ -127,6 +129,9 @@ static void rcar_gen3_init_for_host(struct rcar_gen3_chan *ch)
> rcar_gen3_set_linectrl(ch, 1, 1);
> rcar_gen3_set_host_mode(ch, 1);
> rcar_gen3_enable_vbus_ctrl(ch, 1);
> +
> + extcon_set_cable_state_(ch->extcon, EXTCON_USB_HOST, true);
> + extcon_set_cable_state_(ch->extcon, EXTCON_USB, false);
> }
>
> static void rcar_gen3_init_for_peri(struct rcar_gen3_chan *ch)
> @@ -134,6 +139,9 @@ static void rcar_gen3_init_for_peri(struct rcar_gen3_chan *ch)
> rcar_gen3_set_linectrl(ch, 0, 1);
> rcar_gen3_set_host_mode(ch, 0);
> rcar_gen3_enable_vbus_ctrl(ch, 0);
> +
> + extcon_set_cable_state_(ch->extcon, EXTCON_USB_HOST, false);
> + extcon_set_cable_state_(ch->extcon, EXTCON_USB, true);
> }
>
> static bool rcar_gen3_check_vbus(struct rcar_gen3_chan *ch)
> @@ -272,6 +280,12 @@ static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = {
> };
> MODULE_DEVICE_TABLE(of, rcar_gen3_phy_usb2_match_table);
>
> +static const unsigned int rcar_gen3_phy_cable[] = {
> + EXTCON_USB,
> + EXTCON_USB_HOST,
> + EXTCON_NONE,
> +};
> +
> static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
> {
> struct device *dev = &pdev->dev;
> @@ -297,11 +311,23 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
> /* call request_irq for OTG */
> irq = platform_get_irq(pdev, 0);
> if (irq >= 0) {
> + int ret;
> +
> irq = devm_request_irq(dev, irq, rcar_gen3_phy_usb2_irq,
> IRQF_SHARED, dev_name(dev), channel);
> if (irq < 0)
> dev_err(dev, "No irq handler (%d)\n", irq);
> channel->has_otg = true;
> + channel->extcon = devm_extcon_dev_allocate(dev,
> + rcar_gen3_phy_cable);
> + if (IS_ERR(channel->extcon))
> + return PTR_ERR(channel->extcon);
> +
> + ret = devm_extcon_dev_register(dev, channel->extcon);
> + if (ret < 0) {
> + dev_err(dev, "Failed to register extcon\n");
> + return ret;
> + }
> }
>
> /* devm_phy_create() will call pm_runtime_enable(dev); */
>
Looks good to me about extcon usgae.
Reviewed-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Best Regards,
Chanwoo Choi
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