diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-03-20 11:05:21 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-03-24 23:56:35 +0200 |
| commit | c5de248484afeb6de259239a23645790038d9df3 (patch) | |
| tree | 828a96a5142a3edcbff126f601e9c5d23c4f447d /drivers/gpu/drm/i915/i915_reg.h | |
| parent | 5a08585d38d66dd64b8ae22229bdfae3fdc1ef3e (diff) | |
drm/i915/dpt: Add a modparam to disable DPT via the chicken bit
Add i915.enable_dpt modparam to allow disabling the DPT
usage in hardware via the chicken bit. Useful when debugging
potential DPT issues.
Quickly smoke tested on ADL.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320090522.9909-6-ville.syrjala@linux.intel.com
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 86a8860e610b..053986029c6a 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4646,6 +4646,7 @@ #define PLANE_COLOR_ALPHA_HW_PREMULTIPLY REG_FIELD_PREP(PLANE_COLOR_ALPHA_MASK, 3) #define _PLANE_CHICKEN_1_A 0x7026C #define _PLANE_CHICKEN_2_A 0x7036C +#define PLANE_CHICKEN_DISABLE_DPT REG_BIT(19) /* mtl+ */ #define _PLANE_BUF_CFG_1_A 0x7027c #define _PLANE_BUF_CFG_2_A 0x7037c #define _PLANE_NV12_BUF_CFG_1_A 0x70278 @@ -5510,6 +5511,7 @@ #define KVM_CONFIG_CHANGE_NOTIFICATION_SELECT (1 << 14) #define CHICKEN_MISC_2 _MMIO(0x42084) +#define CHICKEN_MISC_DISABLE_DPT REG_BIT(30) /* adl,dg2 */ #define KBL_ARB_FILL_SPARE_14 REG_BIT(14) #define KBL_ARB_FILL_SPARE_13 REG_BIT(13) #define GLK_CL2_PWR_DOWN (1 << 12) |