From: Imre Deak <imre.deak@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH 3/5] drm/i915: Check for unsupported DP link rates during initial commit
Date: Sat, 3 Oct 2020 03:18:44 +0300 [thread overview]
Message-ID: <20201003001846.1271151-4-imre.deak@intel.com> (raw)
In-Reply-To: <20201003001846.1271151-1-imre.deak@intel.com>
Some BIOSes set an unsupported/imprecise DP link rate (for instance on
TGL A stepping). Make sure that we do an encoder recompute and a modeset
in this case.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
---
drivers/gpu/drm/i915/display/intel_dp.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index d33a3d9fdc3a..df5277c2b9ba 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -3707,6 +3707,18 @@ bool intel_dp_initial_fastset_check(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+ /*
+ * If BIOS has set an unsupported or non-standard link rate for some
+ * reason force an encoder recompute and full modeset.
+ */
+ if (intel_dp_rate_index(intel_dp->source_rates, intel_dp->num_source_rates,
+ crtc_state->port_clock) < 0) {
+ drm_dbg_kms(&i915->drm, "Forcing full modeset due to unsupported link rate\n");
+ crtc_state->uapi.connectors_changed = true;
+ return false;
+ }
/*
* FIXME hack to force full modeset when DSC is being used.
--
2.25.1
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
next prev parent reply other threads:[~2020-10-03 0:18 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-03 0:18 [Intel-gfx] [PATCH 0/5] drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref clock Imre Deak
2020-10-03 0:18 ` [Intel-gfx] [PATCH 1/5] drm/i915/skl: Work around incorrect BIOS WRPLL PDIV programming Imre Deak
2020-10-05 20:08 ` Ville Syrjälä
2020-10-05 20:26 ` Imre Deak
2020-10-05 23:37 ` Ville Syrjälä
2020-10-06 1:24 ` Imre Deak
2020-10-06 1:35 ` [Intel-gfx] [PATCH v3 " Imre Deak
2020-10-06 8:59 ` Ville Syrjälä
2020-10-03 0:18 ` [Intel-gfx] [PATCH 2/5] drm/i915: Move the initial fastset commit check to encoder hooks Imre Deak
2020-10-03 1:07 ` [Intel-gfx] [PATCH v2 " Imre Deak
2020-10-05 20:24 ` Ville Syrjälä
2020-10-05 20:34 ` Imre Deak
2020-10-05 21:53 ` [Intel-gfx] [PATCH v3 " Imre Deak
2020-10-06 9:42 ` Jani Nikula
2020-10-06 9:55 ` Imre Deak
2020-10-06 10:00 ` Jani Nikula
2020-10-06 10:05 ` Imre Deak
2020-10-03 0:18 ` Imre Deak [this message]
2020-10-05 20:25 ` [Intel-gfx] [PATCH 3/5] drm/i915: Check for unsupported DP link rates during initial commit Ville Syrjälä
2020-10-03 0:18 ` [Intel-gfx] [PATCH 4/5] drm/i915: Add an encoder hook to sanitize its state during init/resume Imre Deak
2020-10-05 20:30 ` Ville Syrjälä
2020-10-05 20:46 ` Imre Deak
2020-10-05 23:39 ` Ville Syrjälä
2020-10-05 20:40 ` Ville Syrjälä
2020-10-05 20:57 ` Imre Deak
2020-10-05 20:51 ` Ville Syrjälä
2020-10-05 23:00 ` Imre Deak
2020-10-05 21:53 ` [Intel-gfx] [PATCH v2 " Imre Deak
2020-10-05 23:01 ` [Intel-gfx] [PATCH v3 " Imre Deak
2020-10-06 8:58 ` Ville Syrjälä
2020-10-03 0:18 ` [Intel-gfx] [PATCH 5/5] drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref clock Imre Deak
2020-10-03 0:40 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref clock (rev2) Patchwork
2020-10-03 0:58 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-10-03 1:31 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref clock (rev3) Patchwork
2020-10-03 1:52 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-10-03 3:56 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
2020-10-03 13:48 ` Imre Deak
2020-10-04 6:12 ` Vudum, Lakshminarayana
2020-10-04 5:47 ` [Intel-gfx] ✓ Fi.CI.IGT: success " Patchwork
2020-10-06 0:01 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref clock (rev6) Patchwork
2020-10-06 0:22 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-10-06 1:46 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref clock (rev7) Patchwork
2020-10-06 2:09 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-10-06 2:39 ` [Intel-gfx] ✗ Fi.CI.IGT: failure for drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref clock (rev6) Patchwork
2020-10-06 10:32 ` Imre Deak
2020-10-06 11:04 ` Imre Deak
2020-10-06 5:39 ` [Intel-gfx] ✗ Fi.CI.IGT: failure for drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref clock (rev7) Patchwork
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201003001846.1271151-4-imre.deak@intel.com \
--to=imre.deak@intel.com \
--cc=intel-gfx@lists.freedesktop.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox