diff options
| author | Ramalingam C <ramalingam.c@intel.com> | 2018-06-28 19:04:49 +0530 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2018-07-12 17:31:28 +0200 |
| commit | d5dc0f43f268bf2b6bb61f109a18a652a49c6f4e (patch) | |
| tree | de68a81289a693f1b7f2b2d90a84f9920f704542 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | 73675cf6979bb80534641b1814a971eaf9f649b5 (diff) | |
drm/i915/gmbus: Enable burst read
Support for Burst read in HW is added for HDCP2.2 compliance
requirement.
This patch enables the burst read for all the gmbus read of more than
511Bytes, on capable platforms.
v2:
Extra line is removed.
v3:
Macro is added for detecting the BURST_READ Support [Jani]
Runtime detection of the need for burst_read [Jani]
Calculation enhancement.
v4:
GMBUS0 reg val is passed from caller [ville]
Removed a extra var [ville]
Extra brackets are removed [ville]
Implemented the handling of 512Bytes Burst Read.
v5:
Burst read max length is fixed at 767Bytes [Ville]
v6:
Collecting the received reviewed-by.
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1530192889-5789-3-git-send-email-ramalingam.c@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 2da870a8948e..1f222af0324d 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -3123,6 +3123,7 @@ enum i915_power_well_id { #define GMBUS_RATE_400KHZ (2 << 8) /* reserved on Pineview */ #define GMBUS_RATE_1MHZ (3 << 8) /* reserved on Pineview */ #define GMBUS_HOLD_EXT (1 << 7) /* 300ns hold time, rsvd on Pineview */ +#define GMBUS_BYTE_CNT_OVERRIDE (1 << 6) #define GMBUS_PIN_DISABLED 0 #define GMBUS_PIN_SSC 1 #define GMBUS_PIN_VGADDC 2 |