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| author |   Animesh Manna <animesh.manna@intel.com> | 2019-09-20 17:29:25 +0530 |
|---|---|---|
| committer |   Jani Nikula <jani.nikula@intel.com> | 2019-09-23 10:11:11 +0300 |
| commit | a6e58d9a2e045e800ac54b838c05656f982c36fe (patch) | |
| tree | 887eb95f747cbb0997e1719f6042d065471172d3 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | drm/i915/dsb: Indexed register write function for DSB. (diff) | |
| download | linux-dev-a6e58d9a2e045e800ac54b838c05656f982c36fe.tar.xz linux-dev-a6e58d9a2e045e800ac54b838c05656f982c36fe.zip | |
drm/i915/dsb: Check DSB engine status.
As per bspec check for DSB status before programming any
of its register. Inline function added to check the dsb status.
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920115930.27829-6-animesh.manna@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 9eb71a547103..fba3e8b26296 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -11698,4 +11698,11 @@ enum skl_power_gate { #define PORT_TX_DFLEXDPCSSS(fia) _MMIO_FIA((fia), 0x00894) #define DP_PHY_MODE_STATUS_NOT_SAFE(tc_port) (1 << (tc_port)) +/* This register controls the Display State Buffer (DSB) engines. */ +#define _DSBSL_INSTANCE_BASE 0x70B00 +#define DSBSL_INSTANCE(pipe, id) (_DSBSL_INSTANCE_BASE + \ + (pipe) * 0x1000 + (id) * 100) +#define DSB_CTRL(pipe, id) _MMIO(DSBSL_INSTANCE(pipe, id) + 0x8) +#define DSB_STATUS (1 << 0) + #endif /* _I915_REG_H_ */ |