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dwc3: host: Enable USB3 LPM capability

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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@st.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-of-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pratyush Anand 2014-07-04 17:01:26 +03:00 committed by Greg Kroah-Hartman
parent 20f6fdd01c
commit b2f463e130
2 changed files with 21 additions and 0 deletions
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7
drivers/usb/dwc3/Kconfig
View File

@ -93,4 +93,11 @@ 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

14
drivers/usb/dwc3/host.c
View File

@ -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");