diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bios.c | 96 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_vbt_defs.h | 31 |
2 files changed, 125 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index d13ce0b7db8b..f6a9a5ccb556 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -296,7 +296,7 @@ parse_lfp_panel_dtd(struct drm_i915_private *dev_priv, dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode; - DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n"); + DRM_DEBUG_KMS("Found panel mode in BIOS VBT legacy lfp table:\n"); drm_mode_debug_printmodeline(panel_fixed_mode); fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data, @@ -314,6 +314,98 @@ parse_lfp_panel_dtd(struct drm_i915_private *dev_priv, } static void +parse_generic_dtd(struct drm_i915_private *dev_priv, + const struct bdb_header *bdb) +{ + const struct bdb_generic_dtd *generic_dtd; + const struct generic_dtd_entry *dtd; + struct drm_display_mode *panel_fixed_mode; + int num_dtd; + + generic_dtd = find_section(bdb, BDB_GENERIC_DTD); + if (!generic_dtd) + return; + + if (generic_dtd->gdtd_size < sizeof(struct generic_dtd_entry)) { + DRM_ERROR("GDTD size %u is too small.\n", + generic_dtd->gdtd_size); + return; + } else if (generic_dtd->gdtd_size != + sizeof(struct generic_dtd_entry)) { + DRM_ERROR("Unexpected GDTD size %u\n", generic_dtd->gdtd_size); + /* DTD has unknown fields, but keep going */ + } + + num_dtd = (get_blocksize(generic_dtd) - + sizeof(struct bdb_generic_dtd)) / generic_dtd->gdtd_size; + if (dev_priv->vbt.panel_type > num_dtd) { + DRM_ERROR("Panel type %d not found in table of %d DTD's\n", + dev_priv->vbt.panel_type, num_dtd); + return; + } + + dtd = &generic_dtd->dtd[dev_priv->vbt.panel_type]; + + panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); + if (!panel_fixed_mode) + return; + + panel_fixed_mode->hdisplay = dtd->hactive; + panel_fixed_mode->hsync_start = + panel_fixed_mode->hdisplay + dtd->hfront_porch; + panel_fixed_mode->hsync_end = + panel_fixed_mode->hsync_start + dtd->hsync; + panel_fixed_mode->htotal = panel_fixed_mode->hsync_end; + + panel_fixed_mode->vdisplay = dtd->vactive; + panel_fixed_mode->vsync_start = + panel_fixed_mode->vdisplay + dtd->vfront_porch; + panel_fixed_mode->vsync_end = + panel_fixed_mode->vsync_start + dtd->vsync; + panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end; + + panel_fixed_mode->clock = dtd->pixel_clock; + panel_fixed_mode->width_mm = dtd->width_mm; + panel_fixed_mode->height_mm = dtd->height_mm; + + panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; + drm_mode_set_name(panel_fixed_mode); + + if (dtd->hsync_positive_polarity) + panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC; + else + panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC; + + if (dtd->vsync_positive_polarity) + panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC; + else + panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC; + + DRM_DEBUG_KMS("Found panel mode in BIOS VBT generic dtd table:\n"); + drm_mode_debug_printmodeline(panel_fixed_mode); + + dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode; +} + +static void +parse_panel_dtd(struct drm_i915_private *dev_priv, + const struct bdb_header *bdb) +{ + /* + * Older VBTs provided provided DTD information for internal displays + * through the "LFP panel DTD" block (42). As of VBT revision 229, + * that block is now deprecated and DTD information should be provided + * via a newer "generic DTD" block (58). Just to be safe, we'll + * try the new generic DTD block first on VBT >= 229, but still fall + * back to trying the old LFP block if that fails. + */ + if (bdb->version >= 229) + parse_generic_dtd(dev_priv, bdb); + if (!dev_priv->vbt.lfp_lvds_vbt_mode) + parse_lfp_panel_dtd(dev_priv, bdb); +} + +static void parse_lfp_backlight(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) { @@ -1877,7 +1969,7 @@ void intel_bios_init(struct drm_i915_private *dev_priv) parse_general_features(dev_priv, bdb); parse_general_definitions(dev_priv, bdb); parse_panel_options(dev_priv, bdb); - parse_lfp_panel_dtd(dev_priv, bdb); + parse_panel_dtd(dev_priv, bdb); parse_lfp_backlight(dev_priv, bdb); parse_sdvo_panel_data(dev_priv, bdb); parse_driver_features(dev_priv, bdb); diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h index 69a7cb1fa121..f0338da3a82a 100644 --- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h +++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h @@ -115,6 +115,7 @@ enum bdb_block_id { BDB_MIPI_CONFIG = 52, BDB_MIPI_SEQUENCE = 53, BDB_COMPRESSION_PARAMETERS = 56, + BDB_GENERIC_DTD = 58, BDB_SKIP = 254, /* VBIOS private block, ignore */ }; @@ -863,4 +864,34 @@ struct bdb_compression_parameters { struct dsc_compression_parameters_entry data[16]; } __packed; +/* + * Block 58 - Generic DTD Block + */ + +struct generic_dtd_entry { + u32 pixel_clock; + u16 hactive; + u16 hblank; + u16 hfront_porch; + u16 hsync; + u16 vactive; + u16 vblank; + u16 vfront_porch; + u16 vsync; + u16 width_mm; + u16 height_mm; + + /* Flags */ + u8 rsvd_flags:6; + u8 vsync_positive_polarity:1; + u8 hsync_positive_polarity:1; + + u8 rsvd[3]; +} __packed; + +struct bdb_generic_dtd { + u16 gdtd_size; + struct generic_dtd_entry dtd[]; /* up to 24 DTD's */ +} __packed; + #endif /* _INTEL_VBT_DEFS_H_ */ |