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authorJesse Barnes <jbarnes@virtuousgeek.org>2010-10-07 16:01:14 -0700
committerChris Wilson <chris@chris-wilson.co.uk>2010-10-08 10:28:21 +0100
commit9f0e7ff4b366d27570cbe0ffa137ed1018009114 (patch)
tree47c12c05cb5089ea00bbdad7715a2acaa8890ad0 /drivers/gpu/drm/i915/intel_bios.c
parent723bfd707a97fee06eb3ba4d3e8b4714c29a1064 (diff)
drm/i915: fetch eDP configuration data from the VBT
We need to use some of these values in eDP configurations, so be sure to fetch them and store them in the i915 private structure. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
-rw-r--r--drivers/gpu/drm/i915/intel_bios.c60
1 files changed, 49 insertions, 11 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index b1f73ac0f3f..cc15447eff4 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -24,6 +24,7 @@
* Eric Anholt <eric@anholt.net>
*
*/
+#include <drm/drm_dp_helper.h>
#include "drmP.h"
#include "drm.h"
#include "i915_drm.h"
@@ -413,6 +414,8 @@ static void
parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
{
struct bdb_edp *edp;
+ struct edp_power_seq *edp_pps;
+ struct edp_link_params *edp_link_params;
edp = find_section(bdb, BDB_EDP);
if (!edp) {
@@ -437,19 +440,54 @@ parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
break;
}
- dev_priv->edp.rate = edp->link_params[panel_type].rate;
- dev_priv->edp.lanes = edp->link_params[panel_type].lanes;
- dev_priv->edp.preemphasis = edp->link_params[panel_type].preemphasis;
- dev_priv->edp.vswing = edp->link_params[panel_type].vswing;
+ /* Get the eDP sequencing and link info */
+ edp_pps = &edp->power_seqs[panel_type];
+ edp_link_params = &edp->link_params[panel_type];
- DRM_DEBUG_KMS("eDP vBIOS settings: bpp=%d, rate=%d, lanes=%d, preemphasis=%d, vswing=%d\n",
- dev_priv->edp.bpp,
- dev_priv->edp.rate,
- dev_priv->edp.lanes,
- dev_priv->edp.preemphasis,
- dev_priv->edp.vswing);
+ dev_priv->edp.pps = *edp_pps;
- dev_priv->edp.initialized = true;
+ dev_priv->edp.rate = edp_link_params->rate ? DP_LINK_BW_2_7 :
+ DP_LINK_BW_1_62;
+ switch (edp_link_params->lanes) {
+ case 0:
+ dev_priv->edp.lanes = 1;
+ break;
+ case 1:
+ dev_priv->edp.lanes = 2;
+ break;
+ case 3:
+ default:
+ dev_priv->edp.lanes = 4;
+ break;
+ }
+ switch (edp_link_params->preemphasis) {
+ case 0:
+ dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_0;
+ break;
+ case 1:
+ dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_3_5;
+ break;
+ case 2:
+ dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_6;
+ break;
+ case 3:
+ dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_9_5;
+ break;
+ }
+ switch (edp_link_params->vswing) {
+ case 0:
+ dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_400;
+ break;
+ case 1:
+ dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_600;
+ break;
+ case 2:
+ dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_800;
+ break;
+ case 3:
+ dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_1200;
+ break;
+ }
}
static void