linux.git/drivers/gpu/drm/msm/mdp, branch v4.5

Merge tag 'topic/drm-misc-2015-12-14' of git://anongit.freedesktop.org/drm-intel into drm-next

2015-12-15T00:40:15+00:00

Last (very likely at least) drm-misc pull for 4.5. 3 big things:
- piles of docs for kms vtables.
- drm.debug dmesg output prettification from Ville (i915 parts are for 4.6
  I think)
- connector mode probing/validating/merging cleanup from Ville.

[airlied : fix drm_encoder_init conflict.]

* tag 'topic/drm-misc-2015-12-14' of git://anongit.freedesktop.org/drm-intel: (43 commits)
  drm: modes: Revert cc344980c767 "replace simple_strtoul by kstrtouint"
  drm: Expand the drm_helper_probe_single_connector_modes() docs
  drm: Allow override_edid to override the firmware EDID
  drm/sti: Drop bogus drm_mode_sort() call
  drm: Drop drm_helper_probe_single_connector_modes_nomerge()
  drm: Only merge mode type bits between new probed modes
  drm: Flatten drm_mode_connector_list_update() a bit
  drm: Rename MODE_UNVERIFIED to MODE_STALE
  drm: Don't overwrite UNVERFIED mode status to OK
  drm: Add plane->name and use it in debug prints
  drm: Add crtc->name and use it in debug messages
  drm: Use driver specified encoder name
  drm: Pass 'name' to drm_encoder_init()
  drm: Pass 'name' to drm_universal_plane_init()
  drm: Pass 'name' to drm_crtc_init_with_planes()
  drm: Documentation style guide
  drm: Document drm_encoder/crtc_helper_funcs
  drm: Move drm_display_mode an related docs into kerneldoc
  drm/atomic-helper: Mention the new system/resume helpers the docs
  drm: Document drm_connector_helper_funcs
  ...

drm/msm/mdp: fix a problematic usage of WARN_ON()

2015-12-14T16:51:04+00:00

WARN_ON() takes a condition rather than a format string. This patch
converted WARN_ON() to WARN() instead.

Signed-off-by: Geliang Tang 
Signed-off-by: Rob Clark

drm/msm: ratelimit error irq msgs

2015-12-14T16:49:52+00:00

When things go bad and don't recover, we can be getting an err irq every
vblank.

Signed-off-by: Rob Clark

drm/msm/mdp4: Initialize DSI encoders

2015-12-14T15:39:53+00:00

Create DSI encoders during modeset_init. The 2 encoders should ideally be
one command mode and one video mode DSI encoder respectively, but we don't
support command mode yet. We just create 2 of the same because the dsi
driver expects it, we end up using only the first one.

Signed-off-by: Archit Taneja 
Signed-off-by: Rob Clark

drm/msm/mdp4: Call custom round_pixclk helper only if the encoder type is TMDS

2015-12-14T15:39:47+00:00

The mdp_kms round_pixclk op creates problems when we have more
interfaces in use. It calls the DTV encoder's helper by default.

Check on encoder type and call the corresponding encoder's
func meant for rounding pixel clock. DSI and LVDS don't require
rounding, so just return rate in their case.

Signed-off-by: Archit Taneja 
Signed-off-by: Rob Clark

drm/msm/dsi: Add a mdp4 encoder for DSI

2015-12-14T15:39:40+00:00

Create an mdp4 incoder for DSI. Only DSI video mode is supported as of
now.

Signed-off-by: Archit Taneja 
Signed-off-by: Vinay Simha BN 
Signed-off-by: Rob Clark

drm/msm/mdp4: Initialize LCDC encoder even if panel driver isn't available

2015-12-14T15:39:36+00:00

Currently, the driver defers if it doesn't find a drm_panel. This forces
us to have a drm_panel, if not, the driver isn't usable.

Make the lcdc encoder initialization independent of the availability of
the drm panel. We only check if there is a panel node specified in DT. If
it isn't, then we don't initialize the encoder at all. The panel node is
passed to the lcdc encoder and lvds connector drivers.

The connector driver takes the responsibility to retrieve the drm_panel
from the panel node, and update the status on whether the panel is
connected or not. This makes the panel usable even if the drm_panel
driver is inserted as a module later on.

Signed-off-by: Archit Taneja 
Signed-off-by: Rob Clark

drm/msm/mdp4: Clean up modeset_init

2015-12-14T15:39:30+00:00

modeset_init() for mdp4 isn't very flexible. That makes it hard to add
more interfaces.

Split out the encoder/connector creation code in modeset_init into a
separate function. This is similar to what's done in modeset_init for
mdp5.

Signed-off-by: Archit Taneja 
Signed-off-by: Rob Clark

drm/msm/mdp: Remove CONFIG_OF checks from MDP drivers

2015-12-14T15:39:09+00:00

We don't intend to use downstream non-DT kernels anymore, so remove
CONFIG_OF checks.

Update the TODO comment so that we don't forget about max_clk setting
for non APQ8064 chips having MDP4.

Signed-off-by: Archit Taneja 
Signed-off-by: Rob Clark

drm/msm/mdp5: high precision vblank timestamp support

2015-12-14T15:37:01+00:00

MDP5 has line count and frame count registers for each interface. Enable
these counters and use them to implement the get_vblank_timestamp drm
driver op.

The line counter starts with the value 1 at the beginning of the VSYNC
pulse and ends with value VTOTAL at the end of VFP. This value is used
to determine whether we're in blanking period or not, and an adjusted
value of this counter is used to get vpos as expected by
get_scanout_position. Since there is no way to calculate hpos, we always
set it to 0.

Signed-off-by: Archit Taneja 
Signed-off-by: Rob Clark