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linux/drivers/gpu/drm/i915
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Ville Syrjälä 0bbca274a3 drm/i915: Actually retry with bit-banging after GMBUS timeout 
After the GMBUS transfer times out, we set force_bit=1 and
return -EAGAIN expecting the i2c core to call the .master_xfer
hook again so that we will retry the same transfer via bit-banging.
This is in case the gmbus hardware is somehow faulty.

Unfortunately we left adapter->retries to 0, meaning the i2c core
didn't actually do the retry. Let's tell the core we want one retry
when we return -EAGAIN.

Note that i2c-algo-bit also uses this retry count for some internal
retries, so we'll end up increasing those a bit as well.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: drm-intel-fixes@lists.freedesktop.org
Fixes: bffce907d6 ("drm/i915: abstract i2c bit banging fallback in gmbus xfer")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1457366220-29409-2-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 8b1f165a4a)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-03-11 10:23:28 +02:00
..
dvo_ch7xxx.c
drm/i915: constify intel_dvo_dev_ops structures
2015-12-09 08:21:10 +01:00
dvo_ch7017.c
drm/i915: constify intel_dvo_dev_ops structures
2015-12-09 08:21:10 +01:00
dvo_ivch.c
drm/i915: constify intel_dvo_dev_ops structures
2015-12-09 08:21:10 +01:00
dvo_ns2501.c
drm/i915: constify intel_dvo_dev_ops structures
2015-12-09 08:21:10 +01:00
dvo_sil164.c
drm/i915: constify intel_dvo_dev_ops structures
2015-12-09 08:21:10 +01:00
dvo_tfp410.c
drm/i915: constify intel_dvo_dev_ops structures
2015-12-09 08:21:10 +01:00
dvo.h
drm/i915: constify intel_dvo_dev_ops structures
2015-12-09 08:21:10 +01:00
i915_cmd_parser.c
drm/i915: Type safe register read/write
2015-11-18 15:39:11 +02:00
i915_debugfs.c
drm/i915: Ensure the HW is powered when accessing the CRC HW block
2016-02-22 17:44:38 +02:00
i915_dma.c
Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next
2016-01-18 07:01:16 +10:00
i915_drv.c
drm/i915: refine qemu south bridge detection
2016-01-29 09:15:03 +02:00
i915_drv.h
drm/i915/gen9: Check for DC state mismatch
2016-02-22 18:37:25 +02:00
i915_gem_batch_pool.c
…
i915_gem_batch_pool.h
…
i915_gem_context.c
drm/i915: Restore inhibiting the load of the default context
2016-01-13 10:47:33 +02:00
i915_gem_debug.c
…
i915_gem_dmabuf.c
…
i915_gem_evict.c
drm/i915: Add soft-pinning API for execbuffer
2015-12-09 10:20:17 +00:00
i915_gem_execbuffer.c
drm/i915: Avoid writing relocs with addresses in non-canonical form
2016-01-13 10:41:58 +02:00
i915_gem_fence.c
Back merge tag 'v4.4-rc4' into drm-next
2015-12-08 11:04:26 +10:00
i915_gem_gtt.c
Merge branch 'for-linus' into for-next
2016-01-06 21:14:35 +01:00
i915_gem_gtt.h
drm/i915: eliminate 'temp' in gen8_for_each_{pdd, pdpe, pml4e} macros
2015-12-10 09:36:42 +01:00
i915_gem_render_state.c
drm/i915: mark GEM object pages dirty when mapped & written by the CPU
2015-12-11 18:11:53 +01:00
i915_gem_render_state.h
…
i915_gem_shrinker.c
…
i915_gem_stolen.c
Merge branch 'for-linus' into for-next
2016-01-06 21:14:35 +01:00
i915_gem_tiling.c
drm/i915: get runtime PM reference around GEM set_tiling IOCTL
2015-11-17 18:43:30 +02:00
i915_gem_userptr.c
drm/i915: Allow i915_gem_object_get_page() on userptr as well
2016-02-08 10:30:07 +02:00
i915_gem.c
drm/i915: Allow i915_gem_object_get_page() on userptr as well
2016-02-08 10:30:07 +02:00
i915_gpu_error.c
drm/i915: Type safe register read/write
2015-11-18 15:39:11 +02:00
i915_guc_reg.h
drm/i915: Type safe register read/write
2015-11-18 15:39:11 +02:00
i915_guc_submission.c
drm/i915: mark GEM object pages dirty when mapped & written by the CPU
2015-12-11 18:11:53 +01:00
i915_ioc32.c
…
i915_irq.c
drm/i915: shut up gen8+ SDE irq dmesg noise, again
2016-01-13 10:48:11 +02:00
i915_params.c
Merge tag 'v4.4-rc2' into drm-intel-next-queued
2015-11-23 09:04:05 +01:00
i915_reg.h
drm/i915: Fix hpd live status bits for g4x
2016-02-17 11:52:54 +02:00
i915_suspend.c
drm/i915/bxt: Don't save/restore eDP panel power during suspend (v3)
2016-02-08 11:32:32 +02:00
i915_sysfs.c
drm/i915: Separate cherryview from valleyview
2015-12-10 11:07:24 +01:00
i915_trace_points.c
…
i915_trace.h
drm/i915: Type safe register read/write
2015-11-18 15:39:11 +02:00
i915_vgpu.c
…
i915_vgpu.h
drm/i915: Type safe register read/write
2015-11-18 15:39:11 +02:00
intel_acpi.c
…
intel_atomic_plane.c
drm/i915: Wait for object idle without locks in atomic_commit, v2.
2015-11-02 15:50:31 +01:00
intel_atomic.c
drm/i915: Calculate watermark related members in the crtc_state, v4.
2015-12-07 10:56:08 +01:00
intel_audio.c
drm/i915: Fix bogus dig_port_map[] assignment for pre-HSW
2016-03-07 18:45:49 +02:00
intel_bios.c
drm/i915/bios: reduce indent in parse_general_features
2015-12-16 18:02:05 +02:00
intel_bios.h
drm/i915: move drmP.h include to i915_drv.h
2015-12-16 18:01:15 +02:00
intel_crt.c
drm/i915/crt: Ensure the HW is powered during HW state readout
2016-02-22 17:44:37 +02:00
intel_csr.c
drm/i915/gen9: Check for DC state mismatch
2016-02-22 18:37:25 +02:00
intel_ddi.c
drm/i915: Fix bogus dig_port_map[] assignment for pre-HSW
2016-03-07 18:45:49 +02:00
intel_display.c
drm/i915: Ensure the HW is powered during HW access in assert_pipe
2016-02-22 17:44:37 +02:00
intel_dp_link_training.c
drm/i915/dp: reduce missing TPS3 support errors to debug logging
2016-02-08 11:37:17 +02:00
intel_dp_mst.c
Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next
2016-01-18 07:01:16 +10:00
intel_dp.c
drm/i915: Fix bogus dig_port_map[] assignment for pre-HSW
2016-03-07 18:45:49 +02:00
intel_drv.h
drm/i915: Add helper to get a display power ref if it was already enabled
2016-02-22 17:44:35 +02:00
intel_dsi_panel_vbt.c
drm/i915/dsi: skip gpio element execution when not supported
2016-02-08 11:36:20 +02:00
intel_dsi_pll.c
drm/i915: Separate cherryview from valleyview
2015-12-10 11:07:24 +01:00
intel_dsi.c
drm/i915/dsi: Ensure the HW is powered during HW state readout
2016-02-22 17:44:39 +02:00
intel_dsi.h
drm/i915: fix potential dangling else problems in for_each_ macros
2015-11-25 09:29:32 +01:00
intel_dvo.c
drm: Pass 'name' to drm_encoder_init()
2015-12-11 09:13:20 +01:00
intel_fbc.c
drm/i915: only recompress FBC after flushing a drawing operation
2015-12-03 11:38:11 -02:00
intel_fbdev.c
drm/i915: Pin the ifbdev for the info->system_base GGTT mmapping
2015-12-17 16:59:24 +01:00
intel_fifo_underrun.c
drm/i915: Introduce bdw_{update,enable,disable}_pipe_irq()
2015-11-26 18:55:39 +02:00
intel_frontbuffer.c
…
intel_guc_fwif.h
…
intel_guc_loader.c
Merge tag 'v4.4-rc2' into drm-intel-next-queued
2015-11-23 09:04:05 +01:00
intel_guc.h
drm/i915/guc: Clean up locks in GuC
2015-12-03 15:11:54 +01:00
intel_hdmi.c
drm/i915: Fix bogus dig_port_map[] assignment for pre-HSW
2016-03-07 18:45:49 +02:00
intel_hotplug.c
drm/i915: intel_hpd_init(): Fix suspend/resume reprobing
2016-01-13 10:49:42 +02:00
intel_i2c.c
drm/i915: Actually retry with bit-banging after GMBUS timeout
2016-03-11 10:23:28 +02:00
intel_lrc.c
drm/i915: Make sure DC writes are coherent on flush.
2016-01-29 09:11:26 +02:00
intel_lrc.h
Revert "drm/i915: Extend LRC pinning to cover GPU context writeback"
2015-12-04 17:34:40 +01:00
intel_lvds.c
drm/i915/lvds: Ensure the HW is powered during HW state readout
2016-02-22 17:44:40 +02:00
intel_mocs.c
drm/i915: Type safe register read/write
2015-11-18 15:39:11 +02:00
intel_mocs.h
…
intel_modes.c
…
intel_opregion.c
drm/i915/opregion: handle VBT sizes bigger than 6 KB
2015-12-17 11:40:57 +02:00
intel_overlay.c
drm/i915: Wait for object idle without locks in atomic_commit, v2.
2015-11-02 15:50:31 +01:00
intel_panel.c
drm/i915/backlight: prefer dev_priv over dev pointer
2015-12-18 11:37:44 +02:00
intel_pm.c
drm/i915/skl: Ensure HW is powered during DDB HW state readout
2016-02-22 17:44:40 +02:00
intel_psr.c
drm/i915: PSR also doesn't have link_entry_time on SKL.
2015-12-11 16:32:56 -08:00
intel_renderstate_gen6.c
…
intel_renderstate_gen7.c
…
intel_renderstate_gen8.c
…
intel_renderstate_gen9.c
…
intel_renderstate.h
…
intel_ringbuffer.c
drm/i915: Make sure DC writes are coherent on flush.
2016-01-29 09:11:26 +02:00
intel_ringbuffer.h
drm/i915: intel_ring_initialized() must be simple and inline
2015-12-10 14:14:36 +01:00
intel_runtime_pm.c
drm/i915: Balance assert_rpm_wakelock_held() for !IS_ENABLED(CONFIG_PM)
2016-03-02 14:40:46 +02:00
intel_sdvo_regs.h
…
intel_sdvo.c
drm: Pass 'name' to drm_encoder_init()
2015-12-11 09:13:20 +01:00
intel_sideband.c
…
intel_sprite.c
Merge tag 'drm-intel-next-2015-12-18' of git://anongit.freedesktop.org/drm-intel into drm-next
2015-12-23 14:22:09 +10:00
intel_tv.c
drm: Pass 'name' to drm_encoder_init()
2015-12-11 09:13:20 +01:00
intel_uncore.c
drm/i915: use assert_rpm_wakelock_held instead of opencoding it
2015-12-17 15:59:44 +02:00
Kconfig
drm/i915: Remove select to deleted STOP_MACHINE from Kconfig
2016-01-29 09:13:58 +02:00
Makefile
drm/i915: Move generic link training code to a separate file
2015-11-05 15:14:56 +02:00