* [RFC] drm/i915/edp: use max lanes and clock for edp
@ 2014-09-02 13:37 Jani Nikula
2014-09-02 16:31 ` Jani Nikula
0 siblings, 1 reply; 4+ messages in thread
From: Jani Nikula @ 2014-09-02 13:37 UTC (permalink / raw)
To: intel-gfx; +Cc: jani.nikula
How about throwing this at any eDP link parameter bugs and regressions?
Does it feel too much like giving up the battle?
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 24 +++++++-----------------
1 file changed, 7 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index d7fc2c0e9ba8..f4248d7f64f9 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -889,23 +889,13 @@ intel_dp_compute_config(struct intel_encoder *encoder,
bpp = dev_priv->vbt.edp_bpp;
}
- if (IS_BROADWELL(dev)) {
- /* Yes, it's an ugly hack. */
- min_lane_count = max_lane_count;
- DRM_DEBUG_KMS("forcing lane count to max (%u) on BDW\n",
- min_lane_count);
- } else if (dev_priv->vbt.edp_lanes) {
- min_lane_count = min(dev_priv->vbt.edp_lanes,
- max_lane_count);
- DRM_DEBUG_KMS("using min %u lanes per VBT\n",
- min_lane_count);
- }
-
- if (dev_priv->vbt.edp_rate) {
- min_clock = min(dev_priv->vbt.edp_rate >> 3, max_clock);
- DRM_DEBUG_KMS("using min %02x link bw per VBT\n",
- bws[min_clock]);
- }
+ /*
+ * Use the maximum clock and number of lanes the eDP panel
+ * advertizes being capable of. Typically these values
+ * correspond to the native resolution of the panel.
+ */
+ min_lane_count = max_lane_count;
+ min_clock = max_clock;
}
for (; bpp >= 6*3; bpp -= 2*3) {
--
1.9.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [RFC] drm/i915/edp: use max lanes and clock for edp
2014-09-02 13:37 [RFC] drm/i915/edp: use max lanes and clock for edp Jani Nikula
@ 2014-09-02 16:31 ` Jani Nikula
[not found] ` <8738c7hldj.fsf@intel.com>
0 siblings, 1 reply; 4+ messages in thread
From: Jani Nikula @ 2014-09-02 16:31 UTC (permalink / raw)
To: intel-gfx
On Tue, 02 Sep 2014, Jani Nikula <jani.nikula@intel.com> wrote:
> How about throwing this at any eDP link parameter bugs and regressions?
> Does it feel too much like giving up the battle?
Fixes at least one bug...
https://bugs.freedesktop.org/show_bug.cgi?id=79386#c15
> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
> ---
> drivers/gpu/drm/i915/intel_dp.c | 24 +++++++-----------------
> 1 file changed, 7 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index d7fc2c0e9ba8..f4248d7f64f9 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -889,23 +889,13 @@ intel_dp_compute_config(struct intel_encoder *encoder,
> bpp = dev_priv->vbt.edp_bpp;
> }
>
> - if (IS_BROADWELL(dev)) {
> - /* Yes, it's an ugly hack. */
> - min_lane_count = max_lane_count;
> - DRM_DEBUG_KMS("forcing lane count to max (%u) on BDW\n",
> - min_lane_count);
> - } else if (dev_priv->vbt.edp_lanes) {
> - min_lane_count = min(dev_priv->vbt.edp_lanes,
> - max_lane_count);
> - DRM_DEBUG_KMS("using min %u lanes per VBT\n",
> - min_lane_count);
> - }
> -
> - if (dev_priv->vbt.edp_rate) {
> - min_clock = min(dev_priv->vbt.edp_rate >> 3, max_clock);
> - DRM_DEBUG_KMS("using min %02x link bw per VBT\n",
> - bws[min_clock]);
> - }
> + /*
> + * Use the maximum clock and number of lanes the eDP panel
> + * advertizes being capable of. Typically these values
> + * correspond to the native resolution of the panel.
> + */
> + min_lane_count = max_lane_count;
> + min_clock = max_clock;
> }
>
> for (; bpp >= 6*3; bpp -= 2*3) {
> --
> 1.9.1
>
--
Jani Nikula, Intel Open Source Technology Center
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2014-09-12 7:24 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-09-02 13:37 [RFC] drm/i915/edp: use max lanes and clock for edp Jani Nikula
2014-09-02 16:31 ` Jani Nikula
[not found] ` <8738c7hldj.fsf@intel.com>
2014-09-11 18:43 ` Jesse Barnes
2014-09-12 7:23 ` Jani Nikula
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox