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drm/i915/dmc: Load DMC on MTL 

Add support to load DMC on MTL.

According to the spec and based on tests done on real hardware, 0x7000
is a reasonable size limit that covers each possible payload.

v2:
  - Tighten payload size limit. (Matt, Rodrigo)
  - Use a better name for the defined payload limit. (Rodrigo)

Signed-off-by: Madhumitha Tolakanahalli Pradeep <madhumitha.tolakanahalli.pradeep@intel.com>
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230307195111.90767-1-gustavo.sousa@intel.com
This commit is contained in:
Madhumitha Tolakanahalli Pradeep 2023-03-07 16:51:11 -03:00 committed by Matt Roper
parent c4298d1577
commit 2b897eb4f5
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/drm/i915/display/intel_dmc.c
View File

@ -89,10 +89,13 @@ static struct intel_dmc *i915_to_dmc(struct drm_i915_private *i915)
__stringify(major) "_" \
__stringify(minor) ".bin"
#define XELPDP_DMC_MAX_FW_SIZE 0x7000
#define DISPLAY_VER13_DMC_MAX_FW_SIZE 0x20000
#define DISPLAY_VER12_DMC_MAX_FW_SIZE ICL_DMC_MAX_FW_SIZE
#define MTL_DMC_PATH DMC_PATH(mtl)
MODULE_FIRMWARE(MTL_DMC_PATH);
#define DG2_DMC_PATH DMC_LEGACY_PATH(dg2, 2, 08)
MODULE_FIRMWARE(DG2_DMC_PATH);
@ -995,7 +998,10 @@ void intel_dmc_init(struct drm_i915_private *i915)
INIT_WORK(&dmc->work, dmc_load_work_fn);
if (IS_DG2(i915)) {
if (IS_METEORLAKE(i915)) {
dmc->fw_path = MTL_DMC_PATH;
dmc->max_fw_size = XELPDP_DMC_MAX_FW_SIZE;
} else if (IS_DG2(i915)) {
dmc->fw_path = DG2_DMC_PATH;
dmc->max_fw_size = DISPLAY_VER13_DMC_MAX_FW_SIZE;
} else if (IS_ALDERLAKE_P(i915)) {