linux-toradex.git/drivers/gpu/drm/drm_gem_cma_helper.c, branch v3.15.6

drm: gem-cma: Fix warnings due to improper printk formats

2014-04-04T00:13:48+00:00

Use the %pad printk specifier to print dma_addr_t variables. This fixes
warnings on platforms where dma_addr_t has a different size than int or
size_t.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Dave Airlie

drm/cma: Use dma_mmap_writecombine() to mmap buffer

2014-04-04T00:13:32+00:00

The GEM CMA helpers uses a custom mmap implementation based on
remap_pfn_range(). While this works when the buffer DMA and physical
addresses are identical, it fails to take IOMMU into account and tries
to mmap the buffer to userspace using the DMA virtual address instead of
the physical address. This results in mapping random physical pages when
the device is behind an IOMMU.

Use the DMA mapping dma_mmap_writecombine() function instead.

Signed-off-by: Laurent Pinchart 
Tested-by: Philipp Zabel 
Signed-off-by: Dave Airlie

drm/cma: remove to make sg_table when gem cma is created

2014-03-18T09:20:25+00:00

The sg_table made when gem cma is created isn't used anywhere. The sgt
of struct drm_gem_cma_object will have only sg_tabel imported.

Signed-off-by: Joonyoung Shim 
Acked-by: Laurent Pinchart 
Signed-off-by: Dave Airlie

Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

2013-09-05T17:17:26+00:00

Pull drm tree changes from Dave Airlie:
 "This is the main drm pull request, I have some overlap with sound and
  arm-soc, the sound patch is acked and may conflict based on -next
  reports but should be a trivial fixup, which I'll leave to you!

  Highlights:

   - new drivers:

     MSM driver from Rob Clark

   - non-drm:

     switcheroo and hdmi audio driver support for secondary GPU
     poweroff, so drivers can use runtime PM to poweroff the GPUs.  This
     can save 5 or 6W on some optimus laptops.

   - drm core:

     combined GEM and TTM VMA manager
     per-filp mmap permission tracking
     initial rendernode support (via a runtime enable for now, until we get api stable),
     remove old proc support,
     lots of cleanups of legacy code
     hdmi vendor infoframes and 4k modes
     lots of gem/prime locking and races fixes
     async pageflip scaffolding
     drm bridge objects

   - i915:

     Haswell PC8+ support and eLLC support, HDMI 4K support, initial
     per-process VMA pieces, watermark reworks, convert to generic hdmi
     infoframes, encoder reworking, fastboot support,

   - radeon:

     CIK PM support, remove 3d blit code in favour of DMA engines,
     Berlin GPU support, HDMI audio fixes

   - nouveau:

     secondary GPU power down support for optimus laptops, lots of
     fixes, use MSI, VP3 engine support

   - exynos:

     runtime pm support for g2d, DT support, remove non-DT,

   - tda998x i2c driver:

     lots of fixes for sync issues

   - gma500:

     lots of cleanups

   - rcar:

     add LVDS support, fbdev emulation,

   - tegra:

     just minor fixes"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (684 commits)
  drm/exynos: Fix build error with exynos_drm_connector.c
  drm/exynos: Remove non-DT support in exynos_drm_fimd
  drm/exynos: Remove non-DT support in exynos_hdmi
  drm/exynos: Remove non-DT support in exynos_drm_g2d
  drm/exynos: Remove non-DT support in exynos_hdmiphy
  drm/exynos: Remove non-DT support in exynos_ddc
  drm/exynos: Make Exynos DRM drivers depend on OF
  drm/exynos: Consider fallback option to allocation fail
  drm/exynos: fimd: move platform data parsing to separate function
  drm/exynos: fimd: get signal polarities from device tree
  drm/exynos: fimd: replace struct fb_videomode with videomode
  drm/exynos: check a pixel format to a particular window layer
  drm/exynos: fix fimd pixel format setting
  drm/exynos: Add NULL pointer check
  drm/exynos: Remove redundant error messages
  drm/exynos: Add missing of.h header include
  drm/exynos: Remove redundant NULL check in exynos_drm_buf
  drm/exynos: add device tree support for rotator
  drm/exynos: Add missing includes
  drm/exynos: add runtime pm interfaces to g2d driver
  ...

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

drm/gem: convert to new unified vma manager

2013-07-25T10:47:06+00:00

Use the new vma manager instead of the old hashtable. Also convert all
drivers to use the new convenience helpers. This drops all the
(map_list.hash.key << PAGE_SHIFT) non-sense.

Locking and access-management is exactly the same as before with an
additional lock inside of the vma-manager, which strictly wouldn't be
needed for gem.

v2:
 - rebase on drm-next
 - init nodes via drm_vma_node_reset() in drm_gem.c
v3:
 - fix tegra
v4:
 - remove duplicate if (drm_vma_node_has_offset()) checks
 - inline now trivial drm_vma_node_offset_addr() calls
v5:
 - skip node-reset on gem-init due to kzalloc()
 - do not allow mapping gem-objects with offsets (backwards compat)
 - remove unneccessary casts

Cc: Inki Dae 
Cc: Rob Clark 
Cc: Dave Airlie 
Cc: Thierry Reding 
Signed-off-by: David Herrmann 
Acked-by: Patrik Jakobsson 
Reviewed-by: Daniel Vetter 
Signed-off-by: Dave Airlie

drm/cma: Replace PTR_RET with PTR_ERR_OR_ZERO

2013-07-16T06:36:01+00:00

PTR_RET is now deprecated. Use PTR_ERR_OR_ZERO instead.

Signed-off-by: Sachin Kamat 
Signed-off-by: Rusty Russell

drm/cma: remove GEM CMA specific dma_buf functionality

2013-07-05T05:44:54+00:00

We can use prime helpers instead.

Signed-off-by: Joonyoung Shim 
Acked-by: Laurent Pinchart 
Signed-off-by: Dave Airlie

drm/cma: add low-level hook functions to use prime helpers

2013-07-05T05:44:49+00:00

Instead of using the dma_buf functionality for GEM CMA, we can use prime
helpers if we can provide low-level hook functions for GEM CMA.

Signed-off-by: Joonyoung Shim 
Acked-by: Laurent Pinchart 
Signed-off-by: Dave Airlie

drm/gem: add mutex lock when using drm_gem_mmap_obj

2013-06-28T02:30:15+00:00

The drm_gem_mmap_obj() has to be protected with dev->struct_mutex,
but some caller functions do not. So it adds mutex lock to missing
callers and adds assertion to check whether drm_gem_mmap_obj() is
called with mutex lock or not.

Signed-off-by: YoungJun Cho 
Signed-off-by: Seung-Woo Kim 
Signed-off-by: Kyungmin Park 
Reviewed-by: Maarten Lankhorst 
Reviewed-by: Laurent Pinchart 
Reviewed-by: Rob Clark 
Reviewed-by: Maarten Lankhorst 
Signed-off-by: Dave Airlie