diff options
| author | Imre Deak <imre.deak@intel.com> | 2016-06-13 13:44:37 (GMT) |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2016-06-13 15:46:10 (GMT) |
| commit | e93da0a0137b14f94ab4f1b6d74ca7504e8cb065 (patch) | |
| tree | b0c9616b3abe0b91a02af6edeb132dc50975a5ac /drivers/gpu/drm/i915/i915_reg.h | |
| parent | 324513c0ef42af49dca6487c5d486b5cd47a9bd2 (diff) | |
| download | linux-e93da0a0137b14f94ab4f1b6d74ca7504e8cb065.tar.xz | |
drm/i915/bxt: Sanitiy check the PHY lane power down status
We can check the power state of the PHY data and common lanes as
reported by the PHY. Do this in case we need to debug problems where the
PHY gets stuck in an unexpected state.
Note that I only check these when the lanes are expected to be powered
on purpose, since it's not clear at what point the PHY power/clock gates
things.
v2:
- Don't report the encoder as disabled when the sanity check fails.
(Ville)
CC: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465825477-32671-1-git-send-email-imre.deak@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index c8fd8b9..e137ba4 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1279,6 +1279,15 @@ enum skl_disp_power_wells { #define BXT_P_CR_GT_DISP_PWRON _MMIO(0x138090) #define GT_DISPLAY_POWER_ON(phy) (1 << (phy)) +#define _BXT_PHY_CTL_DDI_A 0x64C00 +#define _BXT_PHY_CTL_DDI_B 0x64C10 +#define _BXT_PHY_CTL_DDI_C 0x64C20 +#define BXT_PHY_CMNLANE_POWERDOWN_ACK (1 << 10) +#define BXT_PHY_LANE_POWERDOWN_ACK (1 << 9) +#define BXT_PHY_LANE_ENABLED (1 << 8) +#define BXT_PHY_CTL(port) _MMIO_PORT(port, _BXT_PHY_CTL_DDI_A, \ + _BXT_PHY_CTL_DDI_B) + #define _PHY_CTL_FAMILY_EDP 0x64C80 #define _PHY_CTL_FAMILY_DDI 0x64C90 #define COMMON_RESET_DIS (1 << 31) |