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| author |   Zhenyu Wang <zhenyuw@linux.intel.com> | 2010-01-13 11:19:52 +0800 |
|---|---|---|
| committer |   Eric Anholt <eric@anholt.net> | 2010-01-15 14:12:47 -0800 |
| commit | 500a8cc466a24e2fbc4c86ef9c6467ae2ffdeb0c (patch) | |
| tree | 4f7878b036dd1767bc7e6f9d7db3b1907b8271db | |
| parent | drm/i915: disable LVDS downclock by default (diff) | |
| download | linux-dev-500a8cc466a24e2fbc4c86ef9c6467ae2ffdeb0c.tar.xz linux-dev-500a8cc466a24e2fbc4c86ef9c6467ae2ffdeb0c.zip | |
drm/i915: parse eDP panel color depth from VBT block
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 32 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.h | 40 |
3 files changed, 73 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 5f781a74bf52..2c1669488b5a 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -283,6 +283,7 @@ typedef struct drm_i915_private { unsigned int lvds_use_ssc:1; unsigned int edp_support:1; int lvds_ssc_freq; + int edp_bpp; struct notifier_block lid_notifier; diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index b53c46f202f6..15fbc1b5a83e 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -33,6 +33,8 @@ #define SLAVE_ADDR1 0x70 #define SLAVE_ADDR2 0x72 +static int panel_type; + static void * find_section(struct bdb_header *bdb, int section_id) { @@ -128,6 +130,7 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv, dev_priv->lvds_dither = lvds_options->pixel_dither; if (lvds_options->panel_type == 0xff) return; + panel_type = lvds_options->panel_type; lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA); if (!lvds_lfp_data) @@ -406,6 +409,34 @@ parse_driver_features(struct drm_i915_private *dev_priv, } static void +parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb) +{ + struct bdb_edp *edp; + + edp = find_section(bdb, BDB_EDP); + if (!edp) { + if (SUPPORTS_EDP(dev_priv->dev) && dev_priv->edp_support) { + DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported,\ + assume 18bpp panel color depth.\n"); + dev_priv->edp_bpp = 18; + } + return; + } + + switch ((edp->color_depth >> (panel_type * 2)) & 3) { + case EDP_18BPP: + dev_priv->edp_bpp = 18; + break; + case EDP_24BPP: + dev_priv->edp_bpp = 24; + break; + case EDP_30BPP: + dev_priv->edp_bpp = 30; + break; + } +} + +static void parse_device_mapping(struct drm_i915_private *dev_priv, struct bdb_header *bdb) { @@ -522,6 +553,7 @@ intel_init_bios(struct drm_device *dev) parse_sdvo_device_mapping(dev_priv, bdb); parse_device_mapping(dev_priv, bdb); parse_driver_features(dev_priv, bdb); + parse_edp(dev_priv, bdb); pci_unmap_rom(pdev, bios); diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h index 425ac9d7f724..4c18514f6f80 100644 --- a/drivers/gpu/drm/i915/intel_bios.h +++ b/drivers/gpu/drm/i915/intel_bios.h @@ -98,6 +98,7 @@ struct vbios_data { #define BDB_SDVO_LVDS_PNP_IDS 24 #define BDB_SDVO_LVDS_POWER_SEQ 25 #define BDB_TV_OPTIONS 26 +#define BDB_EDP 27 #define BDB_LVDS_OPTIONS 40 #define BDB_LVDS_LFP_DATA_PTRS 41 #define BDB_LVDS_LFP_DATA 42 @@ -426,6 +427,45 @@ struct bdb_driver_features { u8 custom_vbt_version; } __attribute__((packed)); +#define EDP_18BPP 0 +#define EDP_24BPP 1 +#define EDP_30BPP 2 +#define EDP_RATE_1_62 0 +#define EDP_RATE_2_7 1 +#define EDP_LANE_1 0 +#define EDP_LANE_2 1 +#define EDP_LANE_4 3 +#define EDP_PREEMPHASIS_NONE 0 +#define EDP_PREEMPHASIS_3_5dB 1 +#define EDP_PREEMPHASIS_6dB 2 +#define EDP_PREEMPHASIS_9_5dB 3 +#define EDP_VSWING_0_4V 0 +#define EDP_VSWING_0_6V 1 +#define EDP_VSWING_0_8V 2 +#define EDP_VSWING_1_2V 3 + +struct edp_power_seq { + u16 t3; + u16 t7; + u16 t9; + u16 t10; + u16 t12; +} __attribute__ ((packed)); + +struct edp_link_params { + u8 rate:4; + u8 lanes:4; + u8 preemphasis:4; + u8 vswing:4; +} __attribute__ ((packed)); + +struct bdb_edp { + struct edp_power_seq power_seqs[16]; + u32 color_depth; + u32 sdrrs_msa_timing_delay; + struct edp_link_params link_params[16]; +} __attribute__ ((packed)); + bool intel_init_bios(struct drm_device *dev); /* |