Commit graph

22411 commits

Author SHA1 Message Date
Chunming Zhou
4ce9891ee1 drm/amdgpu: improve sa_bo->fence by kernel fence
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian K?nig <christian.koenig@amd.com>
2015-08-25 10:38:41 -04:00
Junwei Zhang
1aa4051b7f drm/amdgpu: modify amdgpu_fence_wait_any() to amdgpu_fence_wait_multiple()
Rename the function and update the related code with this modified function.
Add the new parameter of bool wait_all.

If wait_all is true, it will return when all fences are signaled or timeout.
If wait_all is false, it will return when any fence is signaled or timeout.

Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
2015-08-25 10:38:28 -04:00
Alex Deucher
52293c67f1 drm/amdgpu: fix IH ring allocation for bus addresses (v2)
Use pci_alloc_consistent rather than kzalloc since we
need 256 byte aligned memory for the ring buffer.

v2: fix copy paste typo in free function noticed
by Jammy.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=91749

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2015-08-25 10:09:30 -04:00
Dave Airlie
db56176025 Revert "drm/atomic: Call ww_acquire_done after check phase is complete"
This reverts commit 992cbf19b3.

Until we make fbdev layer atomic we can't call this.

Requested-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com?
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-08-25 17:23:36 +10:00
David Weinehall
e2d6cf7f36 drm/i915: Allow parsing of variable size child device entries from VBT
VBT version 196 increased the size of common_child_dev_config. The
parser code assumed that the size of this structure would not change.

The modified code now copies the amount needed based on the VBT version,
and emits a debug message if the VBT version is unknown (too new); since
the struct config block won't shrink in newer versions it should be
harmless to copy the maximum known size in such cases, so that's what we
do, but emitting the warning is probably sensible anyway.

In the longer run it might make sense to modify the parser code to use a
version/feature mapping, rather than hardcoding things like this, but
for now the variants are fairly manageable.

This fixes a regression introduced in

commit 75067ddecf
Author: Antti Koskipaa <antti.koskipaa@linux.intel.com>
Date:   Fri Jul 10 14:10:55 2015 +0300

    drm/i915: Per-DDI I_boost override

since that commit changed the child device config size without updating
the checks and memcpy.

v2: Stricter size checks

v3 by Jani:
- Keep the checks strict, and warnigns verbose, but keep going anyway.
- Take care to copy the max amount of child device config we can.
- Fix the messages.

Signed-off-by: David Weinehall <david.weinehall@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-08-24 10:34:09 +03:00
Thulasimani,Sivakumar
af7080f555 drm/i915: fix link rates reported for SKL
This patch fixes the bug that SKL SKUs before B0 might return
HBR2 as supported even though it is not supposed to be enabled
on such platforms.

v2: optimize if else condition (Jani)

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
[Jani: minor whitespace fix.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-08-24 10:17:51 +03:00
Jani Nikula
6cc38acaaa drm/i915: fix VBT parsing for SDVO child device mapping
commit 75067ddecf
Author: Antti Koskipaa <antti.koskipaa@linux.intel.com>
Date:   Fri Jul 10 14:10:55 2015 +0300

    drm/i915: Per-DDI I_boost override

increased size of union child_device_config without taking into account
the size check in parse_sdvo_device_mapping(). Switch the function over
to using the legacy struct only.

Fixes: 75067ddecf ("drm/i915: Per-DDI I_boost override")
Cc: Antti Koskipaa <antti.koskipaa@linux.intel.com>
Cc: David Weinehall <david.weinehall@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-08-24 09:56:41 +03:00
Dave Airlie
3732ce72b4 Linux 4.2-rc8
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Merge tag 'v4.2-rc8' into drm-next

Linux 4.2-rc8

Backmerge required for Intel so they can fix their -next tree up properly.
2015-08-24 16:36:42 +10:00
Mathieu Larouche
e829d7ef9f drm/mgag200: Add support for a new rev of G200e
- Added PLL algorithm for a new rev of G200e
- Removed the bandwidth limitation for the new G200e

Signed-off-by: Mathieu Larouche <mathieu.larouche@matrox.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-08-24 13:47:16 +10:00
Mathieu Larouche
6d857c18ae drm/mgag200: Add support for a new G200eW3 chipset
- Added support for the new deviceID for G200eW3
- Added PLL algorithm for the G200eW3
- Added some initialization code for G200eW3

Signed-off-by: Mathieu Larouche <mathieu.larouche@matrox.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-08-24 13:46:52 +10:00
Alex Deucher
a887adadb7 drm/amdgpu: Don't link train DisplayPort on HPD until we get the dpcd
This is a port of:
DRM - radeon: Don't link train DisplayPort on HPD until we get the dpcd
to amdgpu.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2015-08-21 18:07:38 -04:00
Stephen Chandler Paul
924f92bf12 DRM - radeon: Don't link train DisplayPort on HPD until we get the dpcd
Most of the time this isn't an issue since hotplugging an adaptor will
trigger a crtc mode change which in turn, causes the driver to probe
every DisplayPort for a dpcd. However, in cases where hotplugging
doesn't cause a mode change (specifically when one unplugs a monitor
from a DisplayPort connector, then plugs that same monitor back in
seconds later on the same port without any other monitors connected), we
never probe for the dpcd before starting the initial link training. What
happens from there looks like this:

	- GPU has only one monitor connected. It's connected via
	  DisplayPort, and does not go through an adaptor of any sort.

	- User unplugs DisplayPort connector from GPU.

	- Change in HPD is detected by the driver, we probe every
	  DisplayPort for a possible connection.

	- Probe the port the user originally had the monitor connected
	  on for it's dpcd. This fails, and we clear the first (and only
	  the first) byte of the dpcd to indicate we no longer have a
	  dpcd for this port.

	- User plugs the previously disconnected monitor back into the
	  same DisplayPort.

	- radeon_connector_hotplug() is called before everyone else,
	  and tries to handle the link training. Since only the first
	  byte of the dpcd is zeroed, the driver is able to complete
	  link training but does so against the wrong dpcd, causing it
	  to initialize the link with the wrong settings.

	- Display stays blank (usually), dpcd is probed after the
	  initial link training, and the driver prints no obvious
	  messages to the log.

In theory, since only one byte of the dpcd is chopped off (specifically,
the byte that contains the revision information for DisplayPort), it's
not entirely impossible that this bug may not show on certain monitors.
For instance, the only reason this bug was visible on my ASUS PB238
monitor was due to the fact that this monitor using the enhanced framing
symbol sequence, the flag for which is ignored if the radeon driver
thinks that the DisplayPort version is below 1.1.

Signed-off-by: Stephen Chandler Paul <cpaul@redhat.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2015-08-21 18:07:08 -04:00
Dave Airlie
7f98ca454a drm/radeon: fix hotplug race at startup
We apparantly get a hotplug irq before we've initialised
modesetting,

[drm] Loading R100 Microcode
BUG: unable to handle kernel NULL pointer dereference at   (null)
IP: [<c125f56f>] __mutex_lock_slowpath+0x23/0x91
*pde = 00000000
Oops: 0002 [#1]
Modules linked in: radeon(+) drm_kms_helper ttm drm i2c_algo_bit backlight pcspkr psmouse evdev sr_mod input_leds led_class cdrom sg parport_pc parport floppy intel_agp intel_gtt lpc_ich acpi_cpufreq processor button mfd_core agpgart uhci_hcd ehci_hcd rng_core snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm usbcore usb_common i2c_i801 i2c_core snd_timer snd soundcore thermal_sys
CPU: 0 PID: 15 Comm: kworker/0:1 Not tainted 4.2.0-rc7-00015-gbf67402 #111
Hardware name: MicroLink                               /D850MV                         , BIOS MV85010A.86A.0067.P24.0304081124 04/08/2003
Workqueue: events radeon_hotplug_work_func [radeon]
task: f6ca5900 ti: f6d3e000 task.ti: f6d3e000
EIP: 0060:[<c125f56f>] EFLAGS: 00010282 CPU: 0
EIP is at __mutex_lock_slowpath+0x23/0x91
EAX: 00000000 EBX: f5e900fc ECX: 00000000 EDX: fffffffe
ESI: f6ca5900 EDI: f5e90100 EBP: f5e90000 ESP: f6d3ff0c
 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
CR0: 8005003b CR2: 00000000 CR3: 36f61000 CR4: 000006d0
Stack:
 f5e90100 00000000 c103c4c1 f6d2a5a0 f5e900fc f6df394c c125f162 f8b0faca
 f6d2a5a0 c138ca00 f6df394c f7395600 c1034741 00d40000 00000000 f6d2a5a0
 c138ca00 f6d2a5b8 c138ca10 c1034b58 00000001 f6d40000 f6ca5900 f6d0c940
Call Trace:
 [<c103c4c1>] ? dequeue_task_fair+0xa4/0xb7
 [<c125f162>] ? mutex_lock+0x9/0xa
 [<f8b0faca>] ? radeon_hotplug_work_func+0x17/0x57 [radeon]
 [<c1034741>] ? process_one_work+0xfc/0x194
 [<c1034b58>] ? worker_thread+0x18d/0x218
 [<c10349cb>] ? rescuer_thread+0x1d5/0x1d5
 [<c103742a>] ? kthread+0x7b/0x80
 [<c12601c0>] ? ret_from_kernel_thread+0x20/0x30
 [<c10373af>] ? init_completion+0x18/0x18
Code: 42 08 e8 8e a6 dd ff c3 57 56 53 83 ec 0c 8b 35 48 f7 37 c1 8b 10 4a 74 1a 89 c3 8d 78 04 8b 40 08 89 63

Reported-and-Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-08-21 19:43:18 +10:00
Thomas Hellstrom
36d4e87b49 drm/vmwgfx: Remove duplicate ttm_bo_device_release
No need to try to call ttm_bo_device_release twice during module unload.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
2015-08-21 00:38:23 -07:00
Thomas Hellstrom
772269f970 drm/vmwgfx: Fix a circular locking dependency in the fbdev code
When a user-space process writes directly to the fbdev framebuffer,
we hit a circular locking dependency. Fix this by introducing a local
delayed work callback so that the defio lock can be released before
calling into the modesetting code for a dirty update.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
2015-08-21 00:37:46 -07:00
Dave Airlie
44790462d0 drm/dp/mst: dump branch OUI in debugfs (v2)
It appears some MST docks are worse than other, but the only
way to know is to see the sw revisions in here, so dump
the branch OUI so we can look at the sw revision.

v2: Thierry made me feel guilty, so I parsed the branch
OUI.

Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-08-21 12:04:49 +10:00
Dave Airlie
bef7d1961c Merge tag 'drm-intel-fixes-2015-08-20' of git://anongit.freedesktop.org/drm-intel into drm-fixes
Revert of a VBT parsing commit that should've been queued for drm-next,
not v4.2. The revert unbreaks Braswell among other things.

Also on Braswell removal of DP HBR2/TP3 and intermediate eDP frequency
support. The code was optimistically added based on incorrect
documentation; the platform does not support them. These are cc: stable.

Finally a gpu state fix from Chris, also cc: stable.

* tag 'drm-intel-fixes-2015-08-20' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Avoid TP3 on CHV
  drm/i915: remove HBR2 from chv supported list
  Revert "drm/i915: Add eDP intermediate frequencies for CHV"
  Revert "drm/i915: Allow parsing of variable size child device entries from VBT"
  drm/i915: Flag the execlists context object as dirty after every use
2015-08-21 10:44:03 +10:00
Christian König
26a6980cf4 drm/amdgpu: fix CS error handling v2
Stop double freeing the the BO list by pulling the content
of amdgpu_cs_parser_prepare_job() into the IOCTL function again.

v2: better commit message

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com> (v1)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2015-08-20 17:06:10 -04:00
Christian König
b203dd9594 drm/amdgpu: fix zeroing all IB fields manually v2
The problem now is that we don't necessarily call amdgpu_ib_get()
in some error paths and so work with uninitialized data.

Better require that the memory is already zeroed.

v2: better commit message

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com> (v1)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2015-08-20 17:05:34 -04:00
Christian König
bf7ebaeed4 drm/amdgpu: free the job immediately after dispatching it
Fixes a whole bunch of lockdep warnings.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
2015-08-20 17:05:01 -04:00
Christian König
2b184d8dbc drm/amdgpu: use a spinlock instead of a mutex for the rq
More appropriate and fixes some nasty lockdep warnings.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
2015-08-20 17:03:47 -04:00
Chunming Zhou
a3348bb801 drm/amdgpu: don't need to use bo_list_clone any more
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian K?nig <christian.koenig@amd.com>
2015-08-20 17:02:58 -04:00
Chunming Zhou
3c4adead84 drm/amdgpu: some clean up for cs_ioctl
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian K?nig <christian.koenig@amd.com>
2015-08-20 17:02:09 -04:00
Chunming Zhou
4fe6311734 drm/amdgpu: prepare job should be common code path
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian K?nig <christian.koenig@amd.com>
2015-08-20 17:01:32 -04:00
Chunming Zhou
bb977d3711 drm/amdgpu: abstract amdgpu_job for scheduler
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian K?nig <christian.koenig@amd.com>
2015-08-20 17:00:35 -04:00
Marek Olšák
6055f37afd drm/amdgpu: bump the DRM version for new allowed mem-mapped registers
Used by mesa, etc. for profiling.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-08-20 16:22:51 -04:00
Dave Airlie
aaba64487a Merge branch 'drm-next-fsl-dcu' of https://github.com/Jianwei-Wang/linux-drm-fsl-dcu into drm-next
Merge Freescale DCU FRM driver.

* 'drm-next-fsl-dcu' of https://github.com/Jianwei-Wang/linux-drm-fsl-dcu:
  MAINTAINERS: Add Freescale DCU DRM driver maintainer
  devicetree: Add NEC to the vendor-prefix list
  drm/layerscape: Add Freescale DCU DRM driver
2015-08-20 14:11:17 +10:00
Jianwei Wang
109eee2f2a drm/layerscape: Add Freescale DCU DRM driver
This patch add support for Two Dimensional Animation and Compositing
Engine (2D-ACE) on the Freescale SoCs.

2D-ACE is a Freescale display controller. 2D-ACE describes
the functionality of the module extremely well its name is a value
that cannot be used as a token in programming languages.
Instead the valid token "DCU" is used to tag the register names and
function names.

The Display Controller Unit (DCU) module is a system master that
fetches graphics stored in internal or external memory and displays
them on a TFT LCD panel. A wide range of panel sizes is supported
and the timing of the interface signals is highly configurable.
Graphics are read directly from memory and then blended in real-time,
which allows for dynamic content creation with minimal CPU
intervention.

The features:
(1) Full RGB888 output to TFT LCD panel.
(2) Blending of each pixel using up to 4 source layers
dependent
on size of panel.
(3) Each graphic layer can be placed with one pixel resolution
in either axis.
(4) Each graphic layer support RGB565 and RGB888 direct colors
without alpha channel and BGRA8888 BGRA4444 ARGB1555 direct
colors
with an alpha channel and YUV422 format.
(5) Each graphic layer support alpha blending with 8-bit
resolution.
This is a simplified version, only one primary plane, one
framebuffer, one crtc, one connector and one encoder for TFT
LCD panel.

Signed-off-by: Alison Wang <b18965@freescale.com>
Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Jianwei Wang <jianwei.wang.chn@gmail.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-08-19 22:23:04 -04:00
Dave Airlie
d072f46544 Merge branch 'drm-atmel-hlcdc-devel' of https://github.com/bbrezillon/linux-at91 into drm-next
The following PR add support for 3 more atmel SoCs and for some missing
features (new input formats and PRIME support).

* 'drm-atmel-hlcdc-devel' of https://github.com/bbrezillon/linux-at91:
  drm: atmel-hlcdc: add support for sama5d4 SoCs
  drm: atmel-hlcdc: add support for at91sam9n12 SoC
  drm: atmel-hlcdc: add support for at91sam9x5 SoCs
  drm: atmel-hlcdc: add RGB565 and RGB444 output support
  drm: atmel-hlcdc: add the missing DRM_ATOMIC flag
  drm: atmel-hlcdc: add PRIME support
2015-08-20 10:35:29 +10:00
Thulasimani,Sivakumar
ed63baaf84 drm/i915: Avoid TP3 on CHV
This patch removes TP3 support on CHV since there is no support
for HBR2 on this platform.

v2: rename the function to indicate it checks source rates (Jani)
v3: update comment to indicate TP3 dependency on HBR2 supported
    hardware (Jani)

Cc: stable@vger.kernel.org # v4.1+
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
[Jani: fixed a couple of checkpatch warnings.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-08-19 11:13:59 +03:00
Thulasimani,Sivakumar
5e86dfe39f drm/i915: remove HBR2 from chv supported list
This patch removes 5.4Gbps from supported link rate for CHV since
it is not supported in it.

v2: change the ordering for better readability (Ville)

Cc: stable@vger.kernel.org # v4.1+
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-08-19 11:06:26 +03:00
Thulasimani,Sivakumar
33747cc5ec Revert "drm/i915: Add eDP intermediate frequencies for CHV"
This reverts
commit fe51bfb95c.
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date:   Thu Mar 12 17:10:38 2015 +0200

CHV does not support intermediate frequencies so reverting the
patch that added it in the first place

Cc: stable@vger.kernel.org # v4.1+
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-08-19 11:04:35 +03:00
Jani Nikula
bf1a5fd2ec Revert "drm/i915: Allow parsing of variable size child device entries from VBT"
This reverts

commit 047fe6e6db
Author: David Weinehall <david.weinehall@linux.intel.com>
Date:   Tue Aug 4 16:55:52 2015 +0300

    drm/i915: Allow parsing of variable size child device entries from VBT

That commit is not valid for v4.2, however it will be valid for v4.3. It
was simply queued too early.

The referenced regressing commit is just fine until the size of struct
common_child_dev_config changes, and that won't happen until
v4.3. Indeed, the expected size checks here rely on the increased size
of the struct, breaking new platforms.

Fixes: 047fe6e6db ("drm/i915: Allow parsing of variable size child device entries from VBT")
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Weinehall <david.weinehall@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-08-19 09:33:17 +03:00
Vladimir Zapolskiy
6dc2e1bf8e drm: bridge/dw_hdmi: fix register I2CM_ADDRESS register name
I2CM_ADDRESS became a MESS, fix it, also change guarding define
to __DW_HDMI_H__ , since the driver is not IMX specific.

Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:38:11 +01:00
Russell King
b872a8e16b drm: bridge/dw_hdmi: fix phy enable/disable handling
The dw_hdmi enable/disable handling is particularly weak in several
regards:
* The hotplug interrupt could call hdmi_poweron() or hdmi_poweroff()
  while DRM is setting a mode, which could race with a mode being set.
* Hotplug will always re-enable the phy whenever it detects an active
  hotplug signal, even if DRM has disabled the output.

Resolve all of these by introducing a mutex to prevent races, and a
state-tracking bool so we know whether DRM wishes the output to be
enabled.  We choose to use our own mutex rather than ->struct_mutex
so that we can still process interrupts in a timely fashion.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:33:58 +01:00
Russell King
2fada109cf drm: bridge/dw_hdmi: rename dw_hdmi_phy_enable_power()
dw_hdmi_phy_enable_power() is not about enabling and disabling power.
It is about allowing or preventing power-down mode being entered - the
register is documented as "Power-down enable (active low 0b)."

This can be seen as the bit has no effect when the HDMI phy is
operational on iMX6 hardware.

Rename the function to dw_hdmi_phy_enable_powerdown() to reflect the
documentation, make it take a bool for the 'enable' argument, and invert
the value to be written.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:33:00 +01:00
Russell King
552e67859c drm: bridge/dw_hdmi: avoid enabling interface in mode_set
On a mode set, DRM makes the following sequence of calls:
* for_each_encoder
*   bridge	mode_fixup
*   encoder	mode_fixup
* crtc		mode_fixup
* for_each_encoder
*   bridge	disable
*   encoder	prepare
*   bridge	post_disable
* disable unused encoders
* crtc		prepare
* crtc		mode_set
* for_each_encoder
*   encoder	mode_set
*   bridge	mode_set
* crtc		commit
* for_each_encoder
*   bridge	pre_enable
*   encoder	commit
*   bridge	enable

dw_hdmi enables the HDMI output in both the bridge mode_set() and also
the bridge enable() step.  This is duplicated work - we can avoid the
setup in mode_set() and just do it in the enable() stage.  This
simplifies the code a little.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:32:38 +01:00
Russell King
f709ec07e3 drm: bridge/dw_hdmi: enable audio only if sink supports audio
Only enable audio support if the sink supports audio in some form, as
defined via its EDID.  We discover this capability using the generic
drm_detect_monitor_audio() function.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:32:38 +01:00
Russell King
05b1342f50 drm: bridge/dw_hdmi: clean up HDMI vs DVI mode handling
The FSL kernel detects the HDMI vendor id, and uses this to set
hdmi->edid_cfg.hdmi_cap, which is then used to set mdvi appropriately,
rather than detecting whether we are outputting a CEA mode.  Update
the dw_hdmi code to use this logic, but lets eliminate the mdvi
variable, prefering the more verbose "hdmi->sink_is_hdmi" instead.

Use the generic drm_detect_hdmi_monitor() to detect a HDMI sink.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:32:38 +01:00
Russell King
8add41900e drm: bridge/dw_hdmi: don't support any pixel doubled modes
As mentioned in the previous commit, the dw-hdmi driver does not support
pixel doubled modes at present; it does not configure the PLL correctly
for these modes.  Therefore, filter out the double-clocked modes as we
presently are unable to support them.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:27:16 +01:00
Russell King
d10ca826b7 drm: bridge/dw_hdmi: remove pixel repetition setting for all VICs
dw_hdmi sets a pixel repetition factor of 1 for VICs 10-15, 25-30 and
35-38.  However, DRM uses their native resolutions in its timing
information.  For example, VIC 14 can be 1440x480 with no repetition,
or 720x480 with one pixel repetition.  As DRM uses 1440 pixels per line
for this video mode, we need no pixel repetition.

In any case, pixel repetition appears broken in dw_hdmi.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:27:16 +01:00
Russell King
b90120a966 drm: bridge/dw_hdmi: introduce interfaces to enable and disable audio
iMX6 devices suffer from an errata (ERR005174) where the audio FIFO can
be emptied while it is partially full, resulting in misalignment of the
audio samples.

To prevent this, the errata workaround recommends writing N as zero
until the audio FIFO has been loaded by DMA.  Writing N=0 prevents the
HDMI bridge from reading from the audio FIFO, effectively disabling
audio.

This means we need to provide the audio driver with a pair of functions
to enable/disable audio.  These are dw_hdmi_audio_enable() and
dw_hdmi_audio_disable().

A spinlock is introduced to ensure that setting the CTS/N values can't
race, ensuring that the audio driver calling the enable/disable
functions (which are called in an atomic context) can't race with a
modeset.

Tested-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:27:15 +01:00
Russell King
b5814fff27 drm: bridge/dw_hdmi: introduce interface to setting sample rate
Introduce dw_hdmi_set_sample_rate(), which allows us to configure the
audio sample rate, setting the CTS/N values appropriately.

Tested-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:27:15 +01:00
Russell King
b91eee8cd8 drm: bridge/dw_hdmi: remove mhsyncpolarity/mvsyncpolarity/minterlaced
Remove the struct hdmi_vmode mhsyncpolarity/mvsyncpolarity/minterlaced
members, which are only used within a single function.  We can directly
reference the appropriate mode->flags instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:27:15 +01:00
Russell King
4b9bcaa7f1 drm: bridge/dw_hdmi: use our own drm_device
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:27:15 +01:00
Russell King
a1b9f2ae21 drm: bridge/dw_hdmi: remove unused 'regmap' struct member
This driver does not make use of regmaps, let's remove this unnecessary
structure member.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:27:15 +01:00
Russell King
d083c312cb drm: bridge/dw_hdmi: simplify hdmi_config_AVI() a little
When a YCBCR format is selected, we can merely copy the colorimetry
information directly as we use the same definitions for both the
unpacked AVI info frame and the hdmi_data_info structure.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:27:14 +01:00
Russell King
d4ac4cb69e drm: bridge/dw_hdmi: use drm_hdmi_avi_infoframe_from_display_mode()
Use drm_hdmi_avi_infoframe_from_display_mode() to compose the AVI
frame.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:27:14 +01:00
Russell King
f879b38f91 drm: bridge/dw_hdmi: clean up hdmi_set_clk_regenerator()
Clean up hdmi_set_clk_regenerator() by allowing it to take the audio
sample rate and ratio directly, rather than hiding it inside the
function.  Raise the unsupported pixel clock/sample rate message from
debug to error level as this results in audio not working correctly.

Tested-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:27:14 +01:00
Russell King
39cc1535fe drm: bridge/dw_hdmi: clean up phy configuration
The phy configuration is dependent on the SoC, and we look up values for
some of the registers in SoC specific data.  However, we had partially
programmed the phy before we had successfully looked up the clock rate.
Also, we were only checking that we had a valid configuration for the
currctrl register.

Move all these lookups to the start of this function instead, so we can
check that all lookups were successful before beginning to program the
phy.

Tested-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-08-18 11:27:14 +01:00