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| author | Sonika Jindal <sonika.jindal@intel.com> | 2015-02-25 07:59:11 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-02-25 18:06:00 +0300 |
| commit | 9a57f5bb717f9f171c7c18edabc4682fde3f67f3 (patch) | |
| tree | 9a80ab180068d18137f94d514ce8e00fed5c315b /drivers/gpu/drm/i915/intel_bios.c | |
| parent | ba0635ffb7665d76715b43ae8144e014a90c1e63 (diff) | |
| download | linux-9a57f5bb717f9f171c7c18edabc4682fde3f67f3.tar.xz | |
drm/i915/skl: Support for edp low_vswing param in vbt
v2: Adding VBT version check for low_vswing field, and correcting parsing
v3: (Damien)
- Restrain the scope of the 'vswing' variable
- Use the more idiomatic "ev_priv->vbt.edp_low_vswing = vswing == 0;"
instead of if (foo) var = true; else var = false;
- Shorten edp_vswing_premph_setting to edp_vswing_premph to fit in 80 chars
- Add the version from which the edp_vswing_premph field is valid in the
struct definition
Reviewed-by: Satheeshakrishna M <satheeshakrishna.m@intel.com> (v2)
Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 3f178258d9f9..c684085cb56a 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -662,6 +662,13 @@ parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb) edp_link_params->vswing); break; } + + if (bdb->version >= 173) { + uint8_t vswing; + + vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF; + dev_priv->vbt.edp_low_vswing = vswing == 0; + } } static void |