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drm/i915: parse eDP panel color depth from VBT block

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Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Zhenyu Wang 2010-01-13 11:19:52 +08:00 committed by Eric Anholt
parent 33814341f2
commit 500a8cc466
3 changed files with 73 additions and 0 deletions
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1
drivers/gpu/drm/i915/i915_drv.h
View File

@ -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;

32
drivers/gpu/drm/i915/intel_bios.c
View File

@ -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)
@ -405,6 +408,34 @@ parse_driver_features(struct drm_i915_private *dev_priv,
dev_priv->render_reclock_avail = true;
}
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);

40
drivers/gpu/drm/i915/intel_bios.h
View File

@ -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);
/*