diff options
| author | Thinh Nguyen <thinhn@synopsys.com> | 2016-09-06 19:22:03 -0700 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-09-07 13:29:20 +0300 |
| commit | 9d6173e125d92e38d4e39bc71f0c3c2cf95cba1a (patch) | |
| tree | 713ffadf91220dc7ab5b6ea9d5284c9d3fcf2435 /drivers/usb/dwc3/core.h | |
| parent | 073c47aca7b7ccc6dd3fb21a3ee8134e30d8b327 (diff) | |
usb: dwc3: Fix dr_mode validation
This patch follows the similar fix in dwc2. See
commit 5268ed9d2e3b ("usb: dwc2: Fix dr_mode validation")
Currently, the dr_mode is only checked against the module configuration.
It also needs to be checked against the hardware capablities.
The driver now checks if both the module configuration and hardware are
capable of the dr_mode value. If not, then it will issue a warning and
fall back to a supported value. If it is unable to fall back to a
suitable value, then the probe will fail.
Behavior summary:
module : actual
HW config dr_mode : dr_mode
---------------------------------
host host any : host
host dev any : INVALID
host otg any : host
dev host any : INVALID
dev dev any : dev
dev otg any : dev
otg host any : host
otg dev any : dev
otg otg any : dr_mode
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc3/core.h')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index b2317e702f57..6b60e42626a2 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -245,7 +245,10 @@ #define DWC3_GEVNTSIZ_SIZE(n) ((n) & 0xffff) /* Global HWPARAMS0 Register */ -#define DWC3_GHWPARAMS0_USB3_MODE(n) ((n) & 0x3) +#define DWC3_GHWPARAMS0_MODE(n) ((n) & 0x3) +#define DWC3_GHWPARAMS0_MODE_GADGET 0 +#define DWC3_GHWPARAMS0_MODE_HOST 1 +#define DWC3_GHWPARAMS0_MODE_DRD 2 #define DWC3_GHWPARAMS0_MBUS_TYPE(n) (((n) >> 3) & 0x7) #define DWC3_GHWPARAMS0_SBUS_TYPE(n) (((n) >> 6) & 0x3) #define DWC3_GHWPARAMS0_MDWIDTH(n) (((n) >> 8) & 0xff) |