linux-toradex.git/drivers/gpu/host1x/drm/drm.c, branch v3.12

drm/host1x: stop casting VMA offsets to 32bit

2013-08-19T00:40:46+00:00

VMA offsets are 64bit so do not cast them to "unsigned int". Also remove
the (now useless) offset-retrieval helper. The VMA manager provides simple
enough helpers.

Cc: Thierry Reding 
Cc: "Terje Bergström" 
Cc: Arto Merilainen 
Signed-off-by: David Herrmann 
Signed-off-by: Dave Airlie

drm: remove FASYNC support

2013-08-19T00:05:17+00:00

So I've stumbled over drm_fasync and wondered what it does. Digging
that up is quite a story.

First I've had to read up on what this does and ended up being rather
bewildered why peopled loved signals so much back in the days that
they've created SIGIO just for that ...

Then I wondered how this ever works, and what that strange "No-op."
comment right above it should mean. After all calling the core fasync
helper is pretty obviously not a noop. After reading through the
kernels FASYNC implementation I've noticed that signals are only sent
out to the processes attached with FASYNC by calling kill_fasync.

No merged drm driver has ever done that.

After more digging I've found out that the only driver that ever used
this is the so called GAMMA driver. I've frankly never heard of such a
gpu brand ever before. Now FASYNC seems to not have been the only bad
thing with that driver, since Dave Airlie removed it from the drm
driver with prejudice:

commit 1430163b4bbf7b00367ea1066c1c5fe85dbeefed
Author: Dave Airlie 
Date:   Sun Aug 29 12:04:35 2004 +0000

    Drop GAMMA DRM from a great height ...

Long story short, the drm fasync support seems to be doing absolutely
nothing. And the only user of it was never merged into the upstream
kernel. And we don't need any fops->fasync callback since the fcntl
implementation in the kernel already implements the noop case
correctly.

So stop this particular cargo-cult and rip it all out.

v2: Kill drm_fasync assignments in rcar (newly added) and imx drivers
(somehow I've missed that one in staging). Also drop the reference in
the drm DocBook. ARM compile-fail reported by Rob Clark.

v3: Move the removal of dev->buf_asnyc assignment in drm_setup to this
patch here.

v4: Actually git add ... tsk.

Cc: Dave Airlie 
Cc: Laurent Pinchart 
Cc: Rob Clark 
Acked-by: Laurent Pinchart 
Signed-off-by: Daniel Vetter 
Reviewed-by: David Herrmann 
Signed-off-by: Dave Airlie

drm: const'ify ioctls table (v2)

2013-08-07T00:10:02+00:00

Because, there is no reason for it not to be const.

v1: original
v2: fix compile break in vmwgfx, and couple related cleanups suggested
    by Ville Syrjälä

Signed-off-by: Rob Clark 
Reviewed-by: Ville Syrjälä 
Reviewed-by: Alex Deucher 
Signed-off-by: Dave Airlie

drm/gem: create drm_gem_dumb_destroy

2013-08-06T23:59:24+00:00

All the gem based kms drivers really want the same function to
destroy a dumb framebuffer backing storage object.

So give it to them and roll it out in all drivers.

This still leaves the option open for kms drivers which don't use GEM
for backing storage, but it does decently simplify matters for gem
drivers.

Acked-by: Inki Dae 
Acked-by: Laurent Pinchart 
Cc: Intel Graphics Development 
Cc: Ben Skeggs 
Reviwed-by: Rob Clark 
Cc: Alex Deucher 
Acked-by: Patrik Jakobsson 
Signed-off-by: Daniel Vetter 
Signed-off-by: Dave Airlie

gpu: host1x: Rework CPU syncpoint increment

2013-06-22T10:43:55+00:00

This patch merges host1x_syncpt_cpu_incr to host1x_syncpt_incr() as
they are in practise doing the same thing. host1x_syncpt_incr() is
also modified to return error codes. User space interface is modified
accordingly to pass return values.

Signed-off-by: Arto Merilainen 
Acked-By: Terje Bergstrom 
Signed-off-by: Thierry Reding

drm/tegra: Remove DRIVER_BUS_PLATFORM from driver_features

2013-06-22T10:43:51+00:00

DRIVER_BUS_PLATFORM is not a DRM driver feature flag, it must not be set
in the driver's driver_features field.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Thierry Reding

drm/tegra: fix missing unlock on error

2013-05-25T10:32:50+00:00

Add the missing unlock before return from function host1x_drm_init() and
host1x_drm_exit() in the error handling case.

Signed-off-by: Wei Yongjun 
Signed-off-by: Thierry Reding

drm/tegra: Explicitly set irq_enabled

2013-05-25T10:32:49+00:00

Since the Tegra DRM driver doesn't use the drm_irq_install() helper, the
irq_enabled flag needs to be set manually in order to make functionality
such as the DRM_IOCTL_WAIT_VBLANK work properly.

Signed-off-by: Thierry Reding

drm/tegra: Add gr2d device

2013-04-22T10:40:04+00:00

Add client driver for 2D device, and IOCTLs to pass work to host1x
channel for 2D.

Also adds functions that can be called to access sync points from
DRM.

Signed-off-by: Arto Merilainen 
Signed-off-by: Terje Bergstrom 
Reviewed-by: Thierry Reding 
Tested-by: Thierry Reding 
Tested-by: Erik Faye-Lund 
Signed-off-by: Thierry Reding

gpu: host1x: drm: Add memory manager and fb

2013-04-22T10:40:04+00:00

This patch introduces a memory manager for tegra drm and moves
existing parts to use it. As cma framebuffer helpers can no more
be used, this patch adds also a separate framebuffer driver for
tegra.

Signed-off-by: Arto Merilainen 
Signed-off-by: Terje Bergstrom 
Reviewed-by: Thierry Reding 
Tested-by: Thierry Reding 
Tested-by: Erik Faye-Lund 
Signed-off-by: Thierry Reding