Regards
Shashank
On 10/10/2017 3:42 PM, Saarinen, Jani wrote:
Hi,
-----Original Message-----
From: Intel-gfx [mailto:intel-gfx-boun...@lists.freedesktop.org] On Behalf
Of Shashank Sharma
Sent: tiistai 10. lokakuuta 2017 13.08
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH v3 0/3] Various retries for LSPCON
This patch series adds various retries and delays in DRM and I915 layer, to
handle some of the read failures while dealing with LSPCON devices.
Should we have reference to fdo bugs?
https://bugs.freedesktop.org/show_bug.cgi?id=102294
https://bugs.freedesktop.org/show_bug.cgi?id=102295
Yes, sure seems like a good idea.
and what about this?
https://bugs.freedesktop.org/show_bug.cgi?id=102359
This seems like one probable candidate :)
- Shashank
LSPCON devices are sometimes slow to respond and the vendores expect us
to retry while probing the device.
The typical scenarios are getting fixed / handled with this patch series are
look like this failure during LSPCON
suspend/resume:
[drm:drm_lspcon_get_mode] *ERROR* LSPCON read(0x80, 0x41) failed
[drm:lspcon_wait_mode [i915]] *ERROR* Error reading LSPCON mode
[drm:drm_lspcon_get_mode] *ERROR* LSPCON read(0x80, 0x41) failed
[drm:lspcon_change_mode.constprop.4 [i915]] *ERROR* Error reading
LSPCON mode [drm:lspcon_resume [i915]] *ERROR* LSPCON resume failed
Setting dangerous option reset - tainting kernel
Shashank Sharma (3):
drm: Add retries for lspcon mode detection
drm/i915: Don't give up waiting on INVALID_MODE
drm/i915: Add retries for LSPCON detection
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 16 +++++++++++++---
drivers/gpu/drm/i915/intel_lspcon.c | 22 +++++++++++++++-------
2 files changed, 28 insertions(+), 10 deletions(-)
--
2.7.4
Jani Saarinen
Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo
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