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usb: dwc3: ep0: add LPM handling

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On device loading the driver enables LPM and the acceptance of U1 and U2
states. The [Set|Clear]Feature requests for "U1/U2" are forwarded
directly to the hardware and allow / forbid the initiation of the low
power links.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Sebastian Andrzej Siewior 2011-09-13 17:54:39 +02:00 • committed by Felipe Balbi
parent 51249dca62
commit e6a3b5e288
3 changed files with 45 additions and 11 deletions
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1
drivers/usb/dwc3/core.h
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@ -194,6 +194,7 @@
#define DWC3_GHWPARAMS1_EN_PWROPT_CLK 1
/* Device Configuration Register */
#define DWC3_DCFG_LPM_CAP (1 << 22)
#define DWC3_DCFG_DEVADDR(addr) ((addr) << 3)
#define DWC3_DCFG_DEVADDR_MASK DWC3_DCFG_DEVADDR(0x7f)