On Fri, Jul 04, 2014 at 05:01:26PM +0300, Mathias Nyman wrote:
> From: Pratyush Anand <pratyush.anand@xxxxxx>
>
> All dwc3 based xhci host controller supports USB3.0 LPM functionality.
> Therefore enable it in platform data for all dwc3 based xhci device if
> DWC3_HOST_USB3_LPM_ENABLE is selected in Kconfig.
>
> Signed-off-by: Pratyush Anand <pratyush.anand@xxxxxx>
> Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Signed-of-by: Felipe Balbi <balbi@xxxxxx>
> ---
> drivers/usb/dwc3/Kconfig | 7 +++++++
> drivers/usb/dwc3/host.c | 14 ++++++++++++++
> 2 files changed, 21 insertions(+)
>
> diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
> index 8eb996e..75a8af4 100644
> --- a/drivers/usb/dwc3/Kconfig
> +++ b/drivers/usb/dwc3/Kconfig
> @@ -92,4 +92,11 @@ config USB_DWC3_VERBOSE
> help
> Say Y here to enable verbose debugging messages on DWC3 Driver.
>
> +config DWC3_HOST_USB3_LPM_ENABLE
> + bool "Enable USB3 LPM Capability"
> + depends on USB_DWC3_HOST=y || USB_DWC3_DUAL_ROLE=y
> + default n
> + help
> + Select this when you want to enable USB3 LPM with dwc3 xhci host.
> +
> endif
> diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
> index 32db328..dcb8ca0 100644
> --- a/drivers/usb/dwc3/host.c
> +++ b/drivers/usb/dwc3/host.c
> @@ -16,12 +16,14 @@
> */
>
> #include <linux/platform_device.h>
> +#include <linux/usb/xhci_pdriver.h>
>
> #include "core.h"
>
> int dwc3_host_init(struct dwc3 *dwc)
> {
> struct platform_device *xhci;
> + struct usb_xhci_pdata pdata;
> int ret;
>
> xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
> @@ -46,6 +48,18 @@ int dwc3_host_init(struct dwc3 *dwc)
> goto err1;
> }
>
> + memset(&pdata, 0, sizeof(pdata));
> +
> +#ifdef CONFIG_DWC3_HOST_USB3_LPM_ENABLE
> + pdata.usb3_lpm_capable = 1;
> +#endif
> +
> + ret = platform_device_add_data(xhci, &pdata, sizeof(pdata));
> + if (ret) {
> + dev_err(dwc->dev, "couldn't add platform data to xHCI device\n");
> + goto err1;
> + }
> +
> ret = platform_device_add(xhci);
> if (ret) {
> dev_err(dwc->dev, "failed to register xHCI device\n");
> --
> 1.8.3.2
>
--
balbi
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