- 02 Mar, 2017 11 commits
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Chris Wilson authored
Useful for double checking that the device is powered up when it hung, include both the status of the power management and our rpm wakelock. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170302151544.16915-1-chris@chris-wilson.co.ukReviewed-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com>
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Chris Wilson authored
Whilst investigating some mysterious failures with hangcheck not running during gem_busy/basic-hang-default, the question is why did we decide to cancel the retire_work (which queues the hangcheck)? That decision is based around GT activity, so include that information in the debug report. v2: Include the GT awake status in the error state Signed-off-by:
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Chris Wilson authored
__i915_guc_submit may be, despite my assertion, called from outside of an irq-safe spinlock so we need to use a full spin_lock_irqsave and not cheat using a spin_lock. (The initial notify callback from the completed fence is called before the spinlock is taken to wake up all waiters and call their callbacks.) [ 48.166581] kernel BUG at drivers/gpu/drm/i915/i915_guc_submission.c:527! [ 48.166617] invalid opcode: 0000 [#1] PREEMPT SMP [ 48.166644] Modules linked in: i915 prime_numbers x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel mei_me mei i2c_i801 netconsole i2c_hid [last unloaded: i915] [ 48.166733] CPU: 2 PID: 5 Comm: kworker/u8:0 Tainted: G U 4.10.0nightly-170302-guc_scrub+ #19 [ 48.166778] Hardware name: /NUC6i5SYB, BIOS SYSKLi35.86A.0054.2016.0930.1102 09/30/2016 [ 48.166835] Workqueue: i915 __intel_autoenable_gt_powersave [i915] [ 48.166865] task: ffff88084ab7cf40 task.stack: ffffc90000064000 [ 48.166921] RIP: 0010:__i915_guc_submit+0x1e6/0x2a0 [i915] [ 48.166953] RSP: 0018:ffffc90000067c80 EFLAGS: 00010202 [ 48.166979] RAX: 0000000000000202 RBX: ffff8808465e0c68 RCX: 0000000000000201 [ 48.167016] RDX: 0000000080000201 RSI: ffff88084ab7d798 RDI: ffff88082b8a8040 [ 48.167054] RBP: ffffc90000067cd8 R08: 0000000000000001 R09: 0000000000000000 [ 48.167085] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88082b8a8148 [ 48.167126] R13: 0000000000000000 R14: ffff88082f440000 R15: ffff88082e85e660 [ 48.167156] FS: 0000000000000000(0000) GS:ffff88086ed00000(0000) knlGS:0000000000000000 [ 48.167195] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.167226] CR2: 000055862ffcdc2c CR3: 0000000001e0f000 CR4: 00000000003406e0 [ 48.167257] Call Trace: [ 48.168112] ? trace_hardirqs_on+0xd/0x10 [ 48.168966] ? _raw_spin_unlock_irqrestore+0x4a/0x80 [ 48.169831] i915_guc_submit+0x1a/0x20 [i915] [ 48.170680] submit_notify+0x89/0xc0 [i915] [ 48.171512] __i915_sw_fence_complete+0x175/0x220 [i915] [ 48.172340] i915_sw_fence_complete+0x2a/0x50 [i915] [ 48.173158] i915_sw_fence_commit+0x21/0x30 [i915] [ 48.173968] __i915_add_request+0x238/0x530 [i915] [ 48.174764] __intel_autoenable_gt_powersave+0x8b/0xb0 [i915] [ 48.175549] process_one_work+0x218/0x690 [ 48.176318] ? process_one_work+0x197/0x690 [ 48.177183] worker_thread+0x4e/0x4a0 [ 48.178039] kthread+0x10c/0x140 [ 48.178878] ? process_one_work+0x690/0x690 [ 48.179718] ? kthread_create_on_node+0x40/0x40 [ 48.180568] ret_from_fork+0x31/0x40 [ 48.181423] Code: 02 00 00 43 89 84 ae 50 11 00 00 e8 75 01 62 e1 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c1 e0 20 48 09 c2 49 89 d0 eb 82 <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 49 c1 e8 20 44 89 43 34 4a [ 48.183336] RIP: __i915_guc_submit+0x1e6/0x2a0 [i915] RSP: ffffc90000067c80 Reported-by:
Arkadiusz Hiler <arkadiusz.hiler@intel.com> Fixes: 349ab919 ("drm/i915/guc: Make wq_lock irq-safe") Fixes: 67b807a8 ("drm/i915: Delay disabling the user interrupt for breadcrumbs") Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by:
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Chris Wilson authored
assert_spin_locked() becomes an unconditionally compiled BUG_ON(), adding debug code right into the heart of critical routines like interrupt handlers. text data bss dec hex 1296480 19944 2272 1318696 141f28 before (lockdep disabled) 1295984 19944 2272 1318200 141d38 after 1336261 21139 3208 1360608 14c2e0 before (lockdep enabled) 1339920 21139 3208 1364267 14d12b after Small saving for release; hopefully more instructive in debug. Signed-off-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
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Chris Wilson authored
Everytime we take the fence->lock (aka request->lock), we must do so with irqs disabled since it may be used from within an hardirq context. As sometimes we are taking the lock in a nested manner, assert that the caller did disable the irqs for us. Signed-off-by:
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Ville Syrjälä authored
In order to make cursor updates actually safe wrt. watermark programming we have to clear the legacy_cursor_update flag in the atomic state. That will cause the regular atomic update path to do the necessary vblank wait after the plane update if needed, otherwise the vblank wait would be skipped and we'd feed the optimal watermarks to the hardware before the plane update has actually happened. To make the slow vs. fast path determination in intel_legacy_cursor_update() a little simpler we can ignore the actual visibility of the plane (which can only get computed once we've already chosen out path) and instead we simply check whether the fb is being set or cleared by the user. This means a fully clipped but logically visible cursor will be considered visible as far as watermark programming is concerned. We can do that for the cursor since it's a fixed size plane and the clipped size doesn't play a role in the watermark computation. This should fix underruns that can occur when the cursor gets enable/disabled or the size gets changed. Hopefully it's good enough that only pure cursor movement and flips go through unthrottled. Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Uwe Kleine-König <uwe@kleine-koenig.org> Reported-by:
Uwe Kleine-König <uwe@kleine-koenig.org> Fixes: f79f2692 ("drm/i915: Add a cursor hack to allow converting legacy page flip to atomic, v3.") Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170217150159.11683-1-ville.syrjala@linux.intel.comReviewed-by:
Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Tested-by:
Rafael Ristovski <rafael.ristovski@gmail.com>
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Madhav Chauhan authored
One of the if statement covers the next line in enable I/O sequence. This patch correct the same by adding error message. Fixes: 46448483 ("drm/i915/glk: Add MIPIIO Enable/disable sequence") Reported-by:
Madhav Chauhan <madhav.chauhan@intel.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1488393082-30660-1-git-send-email-madhav.chauhan@intel.com
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Anusha Srivatsa authored
Return silently without producing much noise on platforms that have a HuC but the firmware is absent. Cc: Ander Conselvan De Oliveira <ander.conselvan.de.oliveira@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@itel.com> Signed-off-by:
Anusha Srivatsa <anusha.srivatsa@intel.com> Reviewed-by:
Ander Conselvan de Oliveira <conselvan2@gmail.com> Signed-off-by:
Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1488398335-13121-1-git-send-email-anusha.srivatsa@intel.com
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Chris Wilson authored
A long time ago we turned off the warning as it was too painful, we had too much broken code. Turn it back on now as we are mostly clean and need to prevent returning to such orangeness. Signed-off-by:
Imre Deak <imre.deak@intel.com>
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Chris Wilson authored
i915_gem_suspend() tries to access the device to ensure it is idle and all writes from the device are flushed to memory. It assumed is already held the runtime pm wakeref, but we should explicitly acquire it for our access to be safe. [ 619.926287] WARNING: CPU: 3 PID: 9353 at drivers/gpu/drm/i915/intel_drv.h:1750 gen6_write32+0x23e/0x2a0 [i915] [ 619.926300] RPM wakelock ref not held during HW access [ 619.926311] Modules linked in: vgem x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_hdmi snd_hda_codec_generic snd_hda_codec coretemp snd_hwdep crct10dif_pclmul snd_hda_core crc32_pclmul snd_pcm mei_me mei lpc_ich ghash_clmulni_intel i915(-) sdhci_pci sdhci mmc_core e1000e ptp pps_core prime_numbers [last unloaded: snd_hda_intel] [ 619.926578] CPU: 3 PID: 9353 Comm: drv_module_relo Tainted: G U 4.10.0-CI-Trybot_609+ #1 [ 619.926585] Hardware name: LENOVO 42962WU/42962WU, BIOS 8DET56WW (1.26 ) 12/01/2011 [ 619.926592] Call Trace: [ 619.926609] dump_stack+0x67/0x92 [ 619.926625] __warn+0xc6/0xe0 [ 619.926640] warn_slowpath_fmt+0x4a/0x50 [ 619.926726] gen6_write32+0x23e/0x2a0 [i915] [ 619.926801] gen6_mm_switch+0x38/0x70 [i915] [ 619.926871] i915_switch_context+0xec/0xa10 [i915] [ 619.926942] i915_gem_switch_to_kernel_context+0x13c/0x2b0 [i915] [ 619.927019] i915_gem_suspend+0x2b/0x180 [i915] [ 619.927079] i915_driver_unload+0x22/0x200 [i915] [ 619.927093] ? __this_cpu_preempt_check+0x13/0x20 [ 619.927105] ? trace_hardirqs_on_caller+0xe7/0x200 [ 619.927118] ? trace_hardirqs_on+0xd/0x10 [ 619.927128] ? _raw_spin_unlock_irqrestore+0x3d/0x60 [ 619.927192] i915_pci_remove+0x14/0x20 [i915] [ 619.927205] pci_device_remove+0x34/0xb0 [ 619.927219] device_release_driver_internal+0x158/0x210 [ 619.927234] driver_detach+0x3b/0x80 [ 619.927245] bus_remove_driver+0x53/0xd0 [ 619.927256] driver_unregister+0x27/0x50 [ 619.927267] pci_unregister_driver+0x25/0xa0 [ 619.927351] i915_exit+0x1a/0xb1a [i915] [ 619.927362] SyS_delete_module+0x193/0x1e0 [ 619.927378] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 619.927386] RIP: 0033:0x7f82b46c5d37 [ 619.927393] RSP: 002b:00007ffdb6f610d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b0 [ 619.927408] RAX: ffffffffffffffda RBX: ffffffff81481ff3 RCX: 00007f82b46c5d37 [ 619.927415] RDX: 0000000000000001 RSI: 0000000000000800 RDI: 000000000224f558 [ 619.927422] RBP: ffffc90001187f88 R08: 0000000000000000 R09: 00007ffdb6f61100 [ 619.927428] R10: 000000000224f4e0 R11: 0000000000000246 R12: 0000000000000000 [ 619.927435] R13: 00007ffdb6f612b0 R14: 0000000000000000 R15: 0000000000000000 [ 619.927451] ? __this_cpu_preempt_check+0x13/0x20 or [ 641.646590] WARNING: CPU: 1 PID: 8913 at drivers/gpu/drm/i915/intel_drv.h:1750 intel_runtime_pm_get_noresume+0x8b/0x90 [i915] [ 641.646595] RPM wakelock ref not held during HW access [ 641.646600] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec snd_hwdep crct10dif_pclmul snd_hda_core crc32_pclmul ghash_clmulni_intel snd_pcm mei_me mei i915(-) r8169 mii prime_numbers i2c_hid [last unloaded: snd_hda_intel] [ 641.646825] CPU: 1 PID: 8913 Comm: drv_module_relo Tainted: G U 4.10.0-CI-Trybot_609+ #1 [ 641.646836] Hardware name: TOSHIBA SATELLITE P50-C/06F4 , BIOS 1.20 10/08/2015 [ 641.646843] Call Trace: [ 641.646857] dump_stack+0x67/0x92 [ 641.646869] __warn+0xc6/0xe0 [ 641.646880] warn_slowpath_fmt+0x4a/0x50 [ 641.646893] ? __this_cpu_preempt_check+0x13/0x20 [ 641.646904] ? trace_hardirqs_on_caller+0xe7/0x200 [ 641.646957] intel_runtime_pm_get_noresume+0x8b/0x90 [i915] [ 641.647022] __i915_add_request+0x423/0x540 [i915] [ 641.647080] i915_gem_switch_to_kernel_context+0x148/0x2b0 [i915] [ 641.647145] i915_gem_suspend+0x2b/0x180 [i915] [ 641.647189] i915_driver_unload+0x22/0x200 [i915] [ 641.647200] ? __this_cpu_preempt_check+0x13/0x20 [ 641.647210] ? trace_hardirqs_on_caller+0xe7/0x200 [ 641.647220] ? trace_hardirqs_on+0xd/0x10 [ 641.647231] ? _raw_spin_unlock_irqrestore+0x3d/0x60 [ 641.647276] i915_pci_remove+0x14/0x20 [i915] [ 641.647293] pci_device_remove+0x34/0xb0 [ 641.647307] device_release_driver_internal+0x158/0x210 [ 641.647321] driver_detach+0x3b/0x80 [ 641.647330] bus_remove_driver+0x53/0xd0 [ 641.647338] driver_unregister+0x27/0x50 [ 641.647348] pci_unregister_driver+0x25/0xa0 [ 641.647415] i915_exit+0x1a/0xb1a [i915] [ 641.647429] SyS_delete_module+0x193/0x1e0 [ 641.647444] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 641.647453] RIP: 0033:0x7fc622bd2d37 [ 641.647463] RSP: 002b:00007ffff8ffb5c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b0 [ 641.647475] RAX: ffffffffffffffda RBX: ffffffff81481ff3 RCX: 00007fc622bd2d37 [ 641.647480] RDX: 0000000000000001 RSI: 0000000000000800 RDI: 0000000000d49118 [ 641.647485] RBP: ffffc90000997f88 R08: 0000000000000000 R09: 00007ffff8ffb5f0 [ 641.647491] R10: 0000000000d490a0 R11: 0000000000000246 R12: 0000000000000000 [ 641.647498] R13: 00007ffff8ffb7a0 R14: 0000000000000000 R15: 0000000000000000 [ 641.647510] ? __this_cpu_preempt_check+0x13/0x20 v2: Keep holding rpm until the end to cover i915_gem_sanitize() as well. Fixes: 5ab57c70 ("drm/i915: Flush logical context image out to memory upon suspend") Fixes: 1c777c5d ("drm/i915/hsw: Fix GPU hang during resume from S3-devices state") Signed-off-by:
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Ander Conselvan de Oliveira authored
Commit 62b69566 ("drm/i915: Only enable DDI IO power domains after enabling DPLL") changed how the DDI IO power domains get enabled, but neglected the need to enable those domains when enabling a DP connector with MST enabled, leading to Kernel panic - not syncing: Timeout: Not all CPUs entered broadcast exception handler Fixes: 62b69566 ("drm/i915: Only enable DDI IO power domains after enabling DPLL") Cc: Imre Deak <imre.deak@intel.com> Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Cc: David Weinehall <david.weinehall@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: intel-gfx@lists.freedesktop.org Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reported-by:
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- 01 Mar, 2017 17 commits
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Chris Wilson authored
The spam of every context initialisation saying the same thing is annoying me! Move the information to the setup of the engine. Signed-off-by:
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Chris Wilson authored
Reintroduce a lock around tiling vs framebuffer creation to prevent modification of the obj->tiling_and_stride whilst the framebuffer is being created. Rather than use struct_mutex once again, use the per-object lock - this will also be required in future to prevent changing the tiling whilst submitting rendering. Reported-by:
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Chris Wilson authored
No more direct return -EINVAL as we have to unwind the obj->framebuffer_references. Fixes: 24dbf51a ("drm/i915: struct_mutex is not required for allocating the framebuffer") Signed-off-by:
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Hans de Goede authored
For v3 VBTs in vid-mode the delays are part of the VBT sequences, so we should not also delay ourselves otherwise we get double delays. Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Reviewed-by:
Bob Paauwe <bob.j.paauwe@intel.com> Signed-off-by:
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Hans de Goede authored
According to the spec we should call MIPI_SEQ_TEAR_ON and DISPLAY_ON on enable for cmd-mode, just like we already call their counterparts on disable. Note: untested, my panel is a vid-mode panel. Signed-off-by:
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Hans de Goede authored
For v3+ VBTs we should call MIPI_SEQ_TEAR_OFF before MIPI_SEQ_DISPLAY_OFF, v2 VBTs do not have MIPI_SEQ_TEAR_OFF so there this is a nop. Signed-off-by:
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Hans de Goede authored
According to the spec for v2 VBTs we should call MIPI_SEQ_DISPLAY_OFF before sending SHUTDOWN, where as for v3 VBTs we should send SHUTDOWN first. Since the v2 order has known issues, we use the v3 order everywhere, add a comment documenting this. Signed-off-by:
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Hans de Goede authored
Execute the MIPI_SEQ_BACKLIGHT_ON/OFF VBT sequences at the same time as we call intel_panel_enable_backlight() / intel_panel_disable_backlight(). Signed-off-by:
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Hans de Goede authored
Execute MIPI_SEQ_DEASSERT_RESET before putting the device in ready state (LP-11), this is the sequence in which things should be done according to the spec. Signed-off-by:
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Hans de Goede authored
Move the DPOunit clock gate workaround to directly after the PLL enable. The exact location of the workaround does not matter and there are 2 reasons to group it with the PLL enable: 1) This moves it out of the middle of the init sequence from the spec, making it easier to follow the init sequence / compare it to the spec 2) It is grouped with the pll disable call in intel_dsi_post_disable, so for consistency it should be grouped with the pll enable in intel_dsi_pre_enable Signed-off-by:
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Hans de Goede authored
Now that we are no longer bound to the drm_panel_ callbacks, call MIPI_SEQ_POWER_ON/OFF at the proper place. Signed-off-by:
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Hans de Goede authored
intel_dsi_post_disable(), which does the MIPI_SEQ_ASSERT_RESET, will always be called at some point before intel_dsi_pre_enable() making the MIPI_SEQ_ASSERT_RESET in intel_dsi_pre_enable() redundant. In addition, calling MIPI_SEQ_ASSERT_RESET in the enable path goes against the VBT spec. Signed-off-by:
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Hans de Goede authored
Document the DSI panel enable / disable sequences from the spec, for easy comparison between the code and the spec. Signed-off-by:
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Jani Nikula authored
Leave the runtime check in place in case the platform variable itself comes from bogus sources. Reviewed-by:
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Imre Deak authored
After commit 2c7d0602 Author: Imre Deak <imre.deak@intel.com> Date: Mon Dec 5 18:27:37 2016 +0200 drm/i915/gen9: Fix PCODE polling during CDCLK change notification there is still one report of the CDCLK-change request timing out on a KBL machine, see the Reference link. On that machine the maximum time the request took to succeed was 34ms, so increase the timeout to 50ms. v2: - Change timeout from 100 to 50 ms to maintain the current 50 ms limit for atomic waits in the driver. (Chris, Tvrtko) Reference: https://bugs.freedesktop.org/show_bug.cgi?id=99345 Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Deepak M authored
v2: Addressed Jani's Review comments(renamed bit field macros) v3: Jani's Review comment for aligning code to platforms and added wrapper functions. v4: Corrected enable/disable seuqence as per BSPEC v5: Corrected waiting twice for same bit (Review comments: Jani) v6: Rebased to Han's patches(dsi restructuring code) Signed-off-by:
Deepak M <m.deepak@intel.com> Signed-off-by:
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Chris Wilson authored
drivers/gpu/drm/i915/intel_dsi.c: In function ‘intel_dsi_prepare’: drivers/gpu/drm/i915/intel_dsi.c:1308:1: error: the frame size of 2488 bytes is larger than 2048 bytes [-Werror=frame-larger-than=] which is caused by the compiling expanding every _MIPI_PORT into an on-stack array of u32[3] at every callsite. Not sure why only one machine/compiler appears susceptible, but with a minor tweak to _MIPI_PORT we can defer the error until later. This is a partial revert of commit ce64645d ("drm/i915: use variadic macros and arrays to choose port/pipe based registers") for a particular bad offender. Signed-off-by:
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- 28 Feb, 2017 12 commits
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Chris Wilson authored
A couple of operations, the flushes and the tracepoint, do not require serialisation by client->wq_lock, so move them before we take it. Signed-off-by:
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Chris Wilson authored
Following the use of dma_fence_signal() from within our interrupt handler, we need to make guc->wq_lock also irq-safe. This was done previously as part of the guc scheduler patch (which also started mixing our fences with the interrupt handler), but is now required to fix the current guc submission backend. v4: Document that __i915_guc_submit is always under an irq disabled section v5: Move wq_rsvd adjustment to its own function Fixes: 67b807a8 ("drm/i915: Delay disabling the user interrupt for breadcrumbs") Signed-off-by:
Michal Wajdeczko <michal.wajdeczko@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170228112803.11646-2-chris@chris-wilson.co.ukReviewed-by:
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Hans de Goede authored
On some devices only MIPI PORT C is used, in this case checking the MIPI PORT A CTRL AFE_LATCHOUT bit (there is no such bit for PORT C on VLV/CHT) will result in false positive "DSI LP not going Low" errors as this checks the PORT A clk status. In case both ports are used we have already checked the AFE_LATCHOUT bit when going through the for_each_dsi_port() loop for PORT A and checking the same bit again for PORT C is a no-op. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97061Signed-off-by:
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Hans de Goede authored
The drm_panel_enable/disable and drm_panel_prepare/unprepare calls are not fine grained enough to abstract all the different steps we need to take (and VBT sequences we need to exec) properly. So simply remove the panel _enable/disable and prepare/unprepare callbacks and instead export intel_dsi_exec_vbt_sequence() from intel_dsi_panel_vbt.c and call that from intel_dsi_enable/disable(). No functional changes. Signed-off-by:
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Hans de Goede authored
Move the intel_dsi_clear_device_ready() function to higher up in intel_dsi.c this pairs it with intel_dsi_device_ready(); and pairs intel_dsi_*enable* with intel_dsi_*disable without intel_dsi_clear_device_ready() sitting in the middle of them. This commit purely moves code around, it does not make any changes what-so-ever. Signed-off-by:
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Hans de Goede authored
The enable path has an intel_dsi_prepare() helper which prepares various registers for the mode-set. Move the code undoing this to a new intel_dsi_unprepare() helper function for better symmetry between the enable and disable paths. No functional changes. Signed-off-by:
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Hans de Goede authored
intel_dsi_disable/enable only have one caller, merge them into their respective callers. Change msleep(2) into usleep_range(2000, 5000) to make checkpatch happy, otherwise no functional changes. The main advantage of this change is that it makes it easier to follow all the steps of the panel enable / disable sequence when reading the code. Signed-off-by:
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Hans de Goede authored
Instead of calling wait_for_dsi_fifo_empty on all dsi ports after calling a drm_panel_foo helper which calls VBT sequences, move it to the VBT mipi_exec_send_packet helper, which is the one VBT instruction which actually puts data in the fifo. This results in a nice cleanup making it clearer what all the steps on intel_dsi_enable / disable are and this also makes the VBT code properly wait till a command has actually been send before executing the next steps (typically a delay) in the VBT sequence. Signed-off-by:
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Chris Wilson authored
Move the setting of gpu_error->missed_irq_ring bit to a common function so that we can get the debug logging for either path. v2: Add %pF caller Signed-off-by:
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Madhav Chauhan authored
As per BSPEC, GLK supports MIPI DSI 8X clk only on PORT A. Therefore only for PORT A PLL divider value should be validated. Signed-off-by:
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Deepak M authored
v2: Addressed Jani's Review comments(renamed bit field macros) Txesc clock divider is calculated and programmed for geminilake platform. Signed-off-by:
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Deepak M authored
Register MIPI_CLOCK_CTRL is applicable only for BXT platform. Future platform have other registers to program the escape clock dividers. Signed-off-by:
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