diff options
| author | Andiry Xu <andiry.xu@amd.com> | 2011-09-24 01:19:51 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-09-27 02:51:09 +0400 |
| commit | fc71ff7583b14347fa1cb592b698f088ecff36e3 (patch) | |
| tree | e10b2ea18dafac36f7da843c7d0d87cb0f2a8194 /drivers/usb/host/xhci-ext-caps.h | |
| parent | 6fd4562178508a0949c9fdecd8558d8b10d671bd (diff) | |
| download | linux-fc71ff7583b14347fa1cb592b698f088ecff36e3.tar.xz | |
xHCI: Check host USB2 LPM capability
Check the host's USB2 LPM capability.
USB2 software LPM support is optional for xHCI 0.96 hosts. xHCI 1.0 hosts
should support software LPM, and may support hardware LPM.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/xhci-ext-caps.h')
| -rw-r--r-- | drivers/usb/host/xhci-ext-caps.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-ext-caps.h b/drivers/usb/host/xhci-ext-caps.h index ce5c9e51748e..c7f33123d4c0 100644 --- a/drivers/usb/host/xhci-ext-caps.h +++ b/drivers/usb/host/xhci-ext-caps.h @@ -65,6 +65,12 @@ /* bits 1:2, 5:12, and 17:19 need to be preserved; bits 21:28 should be zero */ #define XHCI_LEGACY_DISABLE_SMI ((0x3 << 1) + (0xff << 5) + (0x7 << 17)) +/* USB 2.0 xHCI 0.96 L1C capability - section 7.2.2.1.3.2 */ +#define XHCI_L1C (1 << 16) + +/* USB 2.0 xHCI 1.0 hardware LMP capability - section 7.2.2.1.3.2 */ +#define XHCI_HLC (1 << 19) + /* command register values to disable interrupts and halt the HC */ /* start/stop HC execution - do not write unless HC is halted*/ #define XHCI_CMD_RUN (1 << 0) |