Since [1], we can use drm_edid_product_id to get debug info from drm_edid instead of directly parsing EDID. [1] https://lore.kernel.org/dri-devel/cover.1712655867.git.jani.nikula@xxxxxxxxx/ Signed-off-by: Melissa Wen <mwen@xxxxxxxxxx> --- .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 37 ++++++++++--------- 1 file changed, 19 insertions(+), 18 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index 2e07ce2e89f4..1e454cfcaef2 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -45,16 +45,15 @@ #include "dm_helpers.h" #include "ddc_service_types.h" -static u32 edid_extract_panel_id(struct edid *edid) +static u32 edid_extract_panel_id(struct drm_edid_product_id *product_id) { - return (u32)edid->mfg_id[0] << 24 | - (u32)edid->mfg_id[1] << 16 | - (u32)EDID_PRODUCT_ID(edid); + return (u32)be16_to_cpu(product_id->manufacturer_name) << 16 | + (u32)le16_to_cpu(product_id->product_code); } -static void apply_edid_quirks(struct edid *edid, struct dc_edid_caps *edid_caps) +static void apply_edid_quirks(struct drm_edid_product_id *product_id, struct dc_edid_caps *edid_caps) { - uint32_t panel_id = edid_extract_panel_id(edid); + uint32_t panel_id = edid_extract_panel_id(product_id); switch (panel_id) { /* Workaround for some monitors which does not work well with FAMS */ @@ -94,6 +93,8 @@ enum dc_edid_status dm_helpers_parse_edid_caps( { struct amdgpu_dm_connector *aconnector = link->priv; struct drm_connector *connector = &aconnector->base; + const struct drm_edid *drm_edid = aconnector->drm_edid; + struct drm_edid_product_id product_id; struct edid *edid_buf = edid ? (struct edid *) edid->raw_edid : NULL; struct cea_sad *sads; int sad_count = -1; @@ -109,13 +110,13 @@ enum dc_edid_status dm_helpers_parse_edid_caps( if (!drm_edid_is_valid(edid_buf)) result = EDID_BAD_CHECKSUM; - edid_caps->manufacturer_id = (uint16_t) edid_buf->mfg_id[0] | - ((uint16_t) edid_buf->mfg_id[1])<<8; - edid_caps->product_id = (uint16_t) edid_buf->prod_code[0] | - ((uint16_t) edid_buf->prod_code[1])<<8; - edid_caps->serial_number = edid_buf->serial; - edid_caps->manufacture_week = edid_buf->mfg_week; - edid_caps->manufacture_year = edid_buf->mfg_year; + drm_edid_get_product_id(drm_edid, &product_id); + + edid_caps->manufacturer_id = le16_to_cpu(product_id.manufacturer_name); + edid_caps->product_id = le16_to_cpu(product_id.product_code); + edid_caps->serial_number = le32_to_cpu(product_id.serial_number); + edid_caps->manufacture_week = product_id.week_of_manufacture; + edid_caps->manufacture_year = product_id.year_of_manufacture; drm_edid_get_monitor_name(edid_buf, edid_caps->display_name, @@ -123,7 +124,7 @@ enum dc_edid_status dm_helpers_parse_edid_caps( edid_caps->edid_hdmi = connector->display_info.is_hdmi; - apply_edid_quirks(edid_buf, edid_caps); + apply_edid_quirks(&product_id, edid_caps); sad_count = drm_edid_to_sad((struct edid *) edid->raw_edid, &sads); if (sad_count <= 0) @@ -909,9 +910,9 @@ enum dc_edid_status dm_helpers_read_local_edid( * do check sum and retry to make sure read correct edid. */ do { - drm_edid = drm_edid_read_ddc(connector, ddc); drm_edid_connector_update(connector, drm_edid); + aconnector->drm_edid = drm_edid; /* DP Compliance Test 4.2.2.6 */ if (link->aux_mode && connector->edid_corrupt) @@ -929,14 +930,14 @@ enum dc_edid_status dm_helpers_read_local_edid( sink->dc_edid.length = EDID_LENGTH * (edid->extensions + 1); memmove(sink->dc_edid.raw_edid, (uint8_t *)edid, sink->dc_edid.length); - /* We don't need the original edid anymore */ - drm_edid_free(drm_edid); - edid_status = dm_helpers_parse_edid_caps( link, &sink->dc_edid, &sink->edid_caps); + /* We don't need the original edid anymore */ + drm_edid_free(drm_edid); + } while (edid_status == EDID_BAD_CHECKSUM && --retry > 0); if (edid_status != EDID_OK) -- 2.43.0
