On Thursday 12 December 2013 06:56 PM, Matt Porter wrote:
> Adds support for querying the phy bus width from the generic phy
> subsystem. Configure UTMI bus width in GUSBCFG based on this value.
>
> Signed-off-by: Matt Porter <mpor...@linaro.org>
Acked-by: Kishon Vijay Abraham I <kis...@ti.com>
> ---
> drivers/usb/gadget/s3c-hsotg.c | 14 +++++++++++++-
> drivers/usb/gadget/s3c-hsotg.h | 1 +
> 2 files changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
> index e9683c2..168aaa9 100644
> --- a/drivers/usb/gadget/s3c-hsotg.c
> +++ b/drivers/usb/gadget/s3c-hsotg.c
> @@ -144,6 +144,7 @@ struct s3c_hsotg_ep {
> * @regs: The memory area mapped for accessing registers.
> * @irq: The IRQ number we are using
> * @supplies: Definition of USB power supplies
> + * @phyif: PHY interface width
> * @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos.
> * @num_of_eps: Number of available EPs (excluding EP0)
> * @debug_root: root directrory for debugfs.
> @@ -171,6 +172,7 @@ struct s3c_hsotg {
>
> struct regulator_bulk_data supplies[ARRAY_SIZE(s3c_hsotg_supply_names)];
>
> + u32 phyif;
> unsigned int dedicated_fifos:1;
> unsigned char num_of_eps;
>
> @@ -2276,7 +2278,7 @@ static void s3c_hsotg_core_init(struct s3c_hsotg *hsotg)
> */
>
> /* set the PLL on, remove the HNP/SRP and set the PHY */
> - writel(GUSBCFG_PHYIf16 | GUSBCFG_TOutCal(7) |
> + writel(hsotg->phyif | GUSBCFG_TOutCal(7) |
> (0x5 << 10), hsotg->regs + GUSBCFG);
>
> s3c_hsotg_init_fifo(hsotg);
> @@ -3621,6 +3623,16 @@ static int s3c_hsotg_probe(struct platform_device
> *pdev)
> goto err_supplies;
> }
>
> + /* Set default UTMI width */
> + hsotg->phyif = GUSBCFG_PHYIf16;
> +
> + /*
> + * If using the generic PHY framework, check if the PHY bus
> + * width is 8-bit and set the phyif appropriately.
> + */
> + if (hsotg->phy && (phy_get_bus_width(phy) == 8))
> + hsotg->phyif = GUSBCFG_PHYIf8;
> +
> if (hsotg->phy)
> phy_init(hsotg->phy);
>
> diff --git a/drivers/usb/gadget/s3c-hsotg.h b/drivers/usb/gadget/s3c-hsotg.h
> index d650b12..85f549f 100644
> --- a/drivers/usb/gadget/s3c-hsotg.h
> +++ b/drivers/usb/gadget/s3c-hsotg.h
> @@ -55,6 +55,7 @@
> #define GUSBCFG_HNPCap (1 << 9)
> #define GUSBCFG_SRPCap (1 << 8)
> #define GUSBCFG_PHYIf16 (1 << 3)
> +#define GUSBCFG_PHYIf8 (0 << 3)
> #define GUSBCFG_TOutCal_MASK (0x7 << 0)
> #define GUSBCFG_TOutCal_SHIFT (0)
> #define GUSBCFG_TOutCal_LIMIT (0x7)
>
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