Hi Praveen,
On Wednesday 14 of November 2012 15:57:16 Praveen Paneri wrote:
> Adding the transceiver to hsotg driver. Keeping the platform data
> for continuing the smooth operation for boards which still uses it
>
> Signed-off-by: Praveen Paneri <p.paneri@xxxxxxxxxxx>
> Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
> ---
> drivers/usb/gadget/s3c-hsotg.c | 37
> +++++++++++++++++++++++++++---------- 1 files changed, 27
> insertions(+), 10 deletions(-)
>
> diff --git a/drivers/usb/gadget/s3c-hsotg.c
> b/drivers/usb/gadget/s3c-hsotg.c index 6f696ee..bc30a2d 100644
> --- a/drivers/usb/gadget/s3c-hsotg.c
> +++ b/drivers/usb/gadget/s3c-hsotg.c
> @@ -32,6 +32,7 @@
>
> #include <linux/usb/ch9.h>
> #include <linux/usb/gadget.h>
> +#include <linux/usb/phy.h>
> #include <linux/platform_data/s3c-hsotg.h>
>
> #include <mach/map.h>
> @@ -133,7 +134,9 @@ struct s3c_hsotg_ep {
> * struct s3c_hsotg - driver state.
> * @dev: The parent device supplied to the probe function
> * @driver: USB gadget driver
> - * @plat: The platform specific configuration data.
> + * @phy: The otg phy transceiver structure for phy control.
> + * @plat: The platform specific configuration data. This can be removed
> once + * all SoCs support usb transceiver.
> * @regs: The memory area mapped for accessing registers.
> * @irq: The IRQ number we are using
> * @supplies: Definition of USB power supplies
> @@ -153,6 +156,7 @@ struct s3c_hsotg_ep {
> struct s3c_hsotg {
> struct device *dev;
> struct usb_gadget_driver *driver;
> + struct usb_phy *phy;
> struct s3c_hsotg_plat *plat;
>
> spinlock_t lock;
> @@ -2854,7 +2858,10 @@ static void s3c_hsotg_phy_enable(struct s3c_hsotg
> *hsotg) struct platform_device *pdev = to_platform_device(hsotg->dev);
>
> dev_dbg(hsotg->dev, "pdev 0x%p\n", pdev);
> - if (hsotg->plat->phy_init)
> +
> + if (hsotg->phy)
> + usb_phy_init(hsotg->phy);
> + else if (hsotg->plat->phy_init)
> hsotg->plat->phy_init(pdev, hsotg->plat->phy_type);
> }
>
> @@ -2869,7 +2876,9 @@ static void s3c_hsotg_phy_disable(struct s3c_hsotg
> *hsotg) {
> struct platform_device *pdev = to_platform_device(hsotg->dev);
>
> - if (hsotg->plat->phy_exit)
> + if (hsotg->phy)
> + usb_phy_shutdown(hsotg->phy);
> + else if (hsotg->plat->phy_exit)
> hsotg->plat->phy_exit(pdev, hsotg->plat->phy_type);
> }
>
> @@ -3493,6 +3502,7 @@ static void s3c_hsotg_release(struct device *dev)
> static int __devinit s3c_hsotg_probe(struct platform_device *pdev)
> {
> struct s3c_hsotg_plat *plat = pdev->dev.platform_data;
> + struct usb_phy *phy;
> struct device *dev = &pdev->dev;
> struct s3c_hsotg_ep *eps;
> struct s3c_hsotg *hsotg;
> @@ -3501,20 +3511,27 @@ static int __devinit s3c_hsotg_probe(struct
> platform_device *pdev) int ret;
> int i;
>
> - plat = pdev->dev.platform_data;
> - if (!plat) {
> - dev_err(&pdev->dev, "no platform data defined\n");
> - return -EINVAL;
> - }
> -
> hsotg = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsotg),
> GFP_KERNEL); if (!hsotg) {
> dev_err(dev, "cannot get memory\n");
> return -ENOMEM;
> }
>
> + phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
> + if (IS_ERR_OR_NULL(phy)) {
> + /* Fallback for pdata */
> + plat = pdev->dev.platform_data;
> + if (!plat) {
> + dev_err(&pdev->dev, "no platform data or transceiver
defined\n");
> + return -EPROBE_DEFER;
> + } else {
> + hsotg->plat = plat;
> + }
nitpick: The hsotg->plat = plat; assignment can be made without the else
statement as well.
Best regards,
Tomasz Figa
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