[PATCH 3/5] drm/i915/dmc: split out per-platform firmware path selection

[Gustavo Sousa]

Quoting Jani Nikula (2024-04-18 11:39:52-03:00)
>The big if ladder clutters intel_dmc_init(). Split it out to a separate
>function.
>
>Signed-off-by: Jani Nikula <jani.nikula at intel.com>

Reviewed-by: Gustavo Sousa <gustavo.sousa at intel.com>

>---
> drivers/gpu/drm/i915/display/intel_dmc.c | 96 +++++++++++++-----------
> 1 file changed, 54 insertions(+), 42 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
>index ee5db1aafd50..740c05ce83cc 100644
>--- a/drivers/gpu/drm/i915/display/intel_dmc.c
>+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
>@@ -142,6 +142,59 @@ MODULE_FIRMWARE(SKL_DMC_PATH);
> #define BXT_DMC_MAX_FW_SIZE                0x3000
> MODULE_FIRMWARE(BXT_DMC_PATH);
> 
>+static const char *dmc_firmware_default(struct drm_i915_private *i915, u32 *size)
>+{
>+        const char *fw_path = NULL;
>+        u32 max_fw_size = 0;
>+
>+        if (DISPLAY_VER_FULL(i915) == IP_VER(20, 0)) {
>+                fw_path = XE2LPD_DMC_PATH;
>+                max_fw_size = XE2LPD_DMC_MAX_FW_SIZE;
>+        } else if (DISPLAY_VER_FULL(i915) == IP_VER(14, 0)) {
>+                fw_path = MTL_DMC_PATH;
>+                max_fw_size = XELPDP_DMC_MAX_FW_SIZE;
>+        } else if (IS_DG2(i915)) {
>+                fw_path = DG2_DMC_PATH;
>+                max_fw_size = DISPLAY_VER13_DMC_MAX_FW_SIZE;
>+        } else if (IS_ALDERLAKE_P(i915)) {
>+                fw_path = ADLP_DMC_PATH;
>+                max_fw_size = DISPLAY_VER13_DMC_MAX_FW_SIZE;
>+        } else if (IS_ALDERLAKE_S(i915)) {
>+                fw_path = ADLS_DMC_PATH;
>+                max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
>+        } else if (IS_DG1(i915)) {
>+                fw_path = DG1_DMC_PATH;
>+                max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
>+        } else if (IS_ROCKETLAKE(i915)) {
>+                fw_path = RKL_DMC_PATH;
>+                max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
>+        } else if (IS_TIGERLAKE(i915)) {
>+                fw_path = TGL_DMC_PATH;
>+                max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
>+        } else if (DISPLAY_VER(i915) == 11) {
>+                fw_path = ICL_DMC_PATH;
>+                max_fw_size = ICL_DMC_MAX_FW_SIZE;
>+        } else if (IS_GEMINILAKE(i915)) {
>+                fw_path = GLK_DMC_PATH;
>+                max_fw_size = GLK_DMC_MAX_FW_SIZE;
>+        } else if (IS_KABYLAKE(i915) ||
>+                   IS_COFFEELAKE(i915) ||
>+                   IS_COMETLAKE(i915)) {
>+                fw_path = KBL_DMC_PATH;
>+                max_fw_size = KBL_DMC_MAX_FW_SIZE;
>+        } else if (IS_SKYLAKE(i915)) {
>+                fw_path = SKL_DMC_PATH;
>+                max_fw_size = SKL_DMC_MAX_FW_SIZE;
>+        } else if (IS_BROXTON(i915)) {
>+                fw_path = BXT_DMC_PATH;
>+                max_fw_size = BXT_DMC_MAX_FW_SIZE;
>+        }
>+
>+        *size = max_fw_size;
>+
>+        return fw_path;
>+}
>+
> #define DMC_DEFAULT_FW_OFFSET                0xFFFFFFFF
> #define PACKAGE_MAX_FW_INFO_ENTRIES        20
> #define PACKAGE_V2_MAX_FW_INFO_ENTRIES        32
>@@ -1007,48 +1060,7 @@ void intel_dmc_init(struct drm_i915_private *i915)
> 
>         INIT_WORK(&dmc->work, dmc_load_work_fn);
> 
>-        if (DISPLAY_VER_FULL(i915) == IP_VER(20, 0)) {
>-                dmc->fw_path = XE2LPD_DMC_PATH;
>-                dmc->max_fw_size = XE2LPD_DMC_MAX_FW_SIZE;
>-        } else if (DISPLAY_VER_FULL(i915) == IP_VER(14, 0)) {
>-                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)) {
>-                dmc->fw_path = ADLP_DMC_PATH;
>-                dmc->max_fw_size = DISPLAY_VER13_DMC_MAX_FW_SIZE;
>-        } else if (IS_ALDERLAKE_S(i915)) {
>-                dmc->fw_path = ADLS_DMC_PATH;
>-                dmc->max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
>-        } else if (IS_DG1(i915)) {
>-                dmc->fw_path = DG1_DMC_PATH;
>-                dmc->max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
>-        } else if (IS_ROCKETLAKE(i915)) {
>-                dmc->fw_path = RKL_DMC_PATH;
>-                dmc->max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
>-        } else if (IS_TIGERLAKE(i915)) {
>-                dmc->fw_path = TGL_DMC_PATH;
>-                dmc->max_fw_size = DISPLAY_VER12_DMC_MAX_FW_SIZE;
>-        } else if (DISPLAY_VER(i915) == 11) {
>-                dmc->fw_path = ICL_DMC_PATH;
>-                dmc->max_fw_size = ICL_DMC_MAX_FW_SIZE;
>-        } else if (IS_GEMINILAKE(i915)) {
>-                dmc->fw_path = GLK_DMC_PATH;
>-                dmc->max_fw_size = GLK_DMC_MAX_FW_SIZE;
>-        } else if (IS_KABYLAKE(i915) ||
>-                   IS_COFFEELAKE(i915) ||
>-                   IS_COMETLAKE(i915)) {
>-                dmc->fw_path = KBL_DMC_PATH;
>-                dmc->max_fw_size = KBL_DMC_MAX_FW_SIZE;
>-        } else if (IS_SKYLAKE(i915)) {
>-                dmc->fw_path = SKL_DMC_PATH;
>-                dmc->max_fw_size = SKL_DMC_MAX_FW_SIZE;
>-        } else if (IS_BROXTON(i915)) {
>-                dmc->fw_path = BXT_DMC_PATH;
>-                dmc->max_fw_size = BXT_DMC_MAX_FW_SIZE;
>-        }
>+        dmc->fw_path = dmc_firmware_default(i915, &dmc->max_fw_size);
> 
>         if (i915->params.dmc_firmware_path) {
>                 if (strlen(i915->params.dmc_firmware_path) == 0) {
>-- 
>2.39.2
>