Commit Graph

28 Commits

Author SHA1 Message Date
David Howells
760285e7e7 UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/
Convert #include "..." to #include <path/...> in drivers/gpu/.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
2012-10-02 18:01:07 +01:00
David Howells
4126d5d61f UAPI: (Scripted) Remove redundant DRM UAPI header #inclusions from drivers/gpu/.
Remove redundant DRM UAPI header #inclusions from drivers/gpu/.

Remove redundant #inclusions of core DRM UAPI headers (drm.h, drm_mode.h and
drm_sarea.h).  They are now #included via drmP.h and drm_crtc.h via a preceding
patch.

Without this patch and the patch to make include the UAPI headers from the core
headers, after the UAPI split, the DRM C sources cannot find these UAPI headers
because the DRM code relies on specific -I flags to make #include "..."  work
on headers in include/drm/ - but that does not work after the UAPI split without
adding more -I flags.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
2012-10-02 18:01:05 +01:00
Mandeep Singh Baines
525ee699f0 drm/exynos: fix double call of drm_prime_(init/destroy)_file_private
The double invocations are incorrect but seem to be safe so I don't
think this will fix any bugs.

Before:

[    7.639366] drm_prime_init_file ee3675d0
[    7.639377] drm_prime_init_file ee3675d0
[    7.639507] drm_prime_destroy_file ee3675d0
[    7.639518] drm_prime_destroy_file ee3675d0
[    7.639802] drm_prime_init_file ee372390
[    7.639810] drm_prime_init_file ee372390
[    8.473316] drm_prime_init_file ee356390
[    8.473331] drm_prime_init_file ee356390

After:

[    6.363842] drm_prime_init_file edc2e5d0
[    6.363994] drm_prime_destroy_file edc2e5d0
[    6.364260] drm_prime_init_file edc2e750
[    8.004837] drm_prime_init_file ee36ded0

Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-09-13 12:38:09 +09:00
Keith Packard
804d74abe2 drm: use drm_compat_ioctl for 32-bit apps
Most of the DRM drivers appear to be missing the .compat_ioctl file
operation entry necessary for 32-bit application compatibility.

This patch  uses drm_compat_ioctl for all drivers which don't have
their own, and which are using drm_ioctl for .unlocked_ioctl.

This leaves drivers/gpu/drm/psb/psb_drv.c unchanged; it has a custom
.unlocked_ioctl and will presumably need a custom .compat_ioctl as
well.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
2012-09-06 06:55:02 +10:00
Joonyoung Shim
00ae67cf26 drm/exynos: add property for plane zpos
The exynos drm driver used a specific ioctl - DRM_EXYNOS_PLANE_SET_ZPOS
to set zpos of plane. It can be substitute to property of plane. This
patch adds a property for plane zpos and removes
DRM_EXYNOS_PLANE_SET_ZPOS ioctl.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27 11:13:54 +09:00
Joonyoung Shim
b5d2eb3bd6 drm/exynos: use private plane for crtc
The crtc can use private plane instead it has overlay struct. It will be
helpful use plane feature from crtc later.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27 11:13:53 +09:00
Laurent Pinchart
293a1c128e drm/exynos: DRIVER_BUS_PLATFORM is not a driver feature
DRIVER_BUS_PLATFORM is a bus type used internally in the DRM core, not a
flag for the drm_driver::driver_features field.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-06-05 11:53:58 +09:00
Dave Airlie
345f3b9035 Merge branch 'exynos-drm-next' of git://git.infradead.org/users/kmpark/linux-samsung into drm-core-next
* 'exynos-drm-next' of git://git.infradead.org/users/kmpark/linux-samsung:
  drm/exynos: add G2D driver
  drm/exynos: added vp scaling feature for hdmi
  drm/exynos: added source size to overlay structure
  drm/exynos: add additional display mode for hdmi
  drm/exynos: enable dvi mode for dvi monitor
  drm/exynos: fixed wrong pageflip finish event for interlace mode
  drm/exynos: add PM functions for hdmi and mixer
  drm/exynos: add dpms for hdmi
  drm/exynos: use threaded irq for hdmi hotplug
  drm/exynos: use platform_get_irq_byname for hdmi
  drm/exynos: cleanup for hdmi platform data
  drm/exynos: added a feature to get gem buffer information.
  drm/exynos: added drm prime feature.
  drm/exynos: added cache attribute support for gem.
  vgaarb: Provide dummy default device functions
2012-05-22 10:39:57 +01:00
Laurent Pinchart
78b68556a9 drm: Constify gem_vm_ops pointer
The GEM vm operations structure is passed to the VM core that stores it
in a const field. There vm operations structures can thus be const in
DRM as well.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <rob.clark@linaro.org>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-22 10:34:53 +01:00
Joonyoung Shim
d7f1642c90 drm/exynos: add G2D driver
Changelog v3:
- use __u64 instead of pointer in ioctl struct.

The G2D is a 2D graphic accelerator that supports Bit Block Transfer.
This G2D driver is exynos drm specific and supports only G2D(version
4.1) of later Exynos series from Exynos4X12 because supporting DMA.

The G2D is performed by two tasks simply.
1. Configures the rendering parameters, such as foreground color and
   coordinates data by setting the drawing context registers.
2. Start the rendering process by setting thre relevant command
   registers accordingly.

The G2D version 4.1 supports DMA mode as host interface. User can make
command list to reduce HOST(ARM) loads. The contents of The command list
is setted to relevant registers of G2D by DMA.

The command list is composed Header and command sets and Tail.
- Header: The number of command set(4Bytes)
- Command set: Register offset(4Bytes) + Register data(4Bytes)
- Tail: Pointer of base address of the other command list(4Bytes)

By Tail field, the G2D can process many command lists without halt at
one go.

The G2D has following the rendering pipeline.
--> Primitive Drawing --> Rotation --> Clipping --> Bilinear Sampling
--> Color Key --> ROP --> Mask Operation --> Alpha Blending -->
Dithering --> FrameBuffer

And supports various operations from the rendering pipeline.
- copy
- fast solid color fill
- window clipping
- rotation
- flip
- 4 operand raster operation(ROP4)
- masking operation
- alpha blending
- color key
- dithering
- etc

User should make the command list to data and registers needed by
operation to use. The Exynos G2D driver only manages the command lists
received from user. Some registers needs memory base address(physical
address) of image. User doesn't know its physical address, so fills the
gem handle of that memory than address to command sets, then G2D driver
converts it to memory base address.

We adds three ioctls and one event for Exynos G2D.

- ioctls
DRM_EXYNOS_G2D_GET_VER: get the G2D hardware version
DRM_EXYNOS_G2D_SET_CMDLIST: set the command list from user to driver
DRM_EXYNOS_G2D_EXEC: execute the command lists setted to driver

- event
DRM_EXYNOS_G2D_EVENT: event to give notification completion of the
		      command list to user

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-05-17 20:14:48 +09:00
Inki Dae
40cd7e0c02 drm/exynos: added a feature to get gem buffer information.
this patch adds a feature to get a gem buffer information and user application
can get the gem buffer information simply in runtime through gem handle.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-05-08 18:46:32 +09:00
Inki Dae
b2df26c10b drm/exynos: added drm prime feature.
this patch adds exynos specific codes for DRM Prime feature.
with this patch, user application can get file descriptor
from gem handle through DRM_IOCTL_PRIME_HANDLE_TO_FD ioctl
command(export) and also gem handle from file descriptor
through DRM_IOCTL_PRIME_FD_TO_HANLDE(import) ioctl command.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-05-08 18:46:32 +09:00
Linus Torvalds
be53bfdb80 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm main changes from Dave Airlie:
 "This is the main drm pull request, I'm probably going to send two more
  smaller ones, will explain below.

  This contains a patch that is also in the fbdev tree, but it should be
  the same patch, it added an API for hot unplugging framebuffer
  devices, and I need that API for a new driver.

  It also contains some changes to the i2c tree which Jean has acked,
  and one change to moorestown platform stuff in x86.

  Highlights:
   - new drivers: UDL driver for USB displaylink devices, kms only,
     should support correct hotplug operations.
   - core: i2c speedups + better hotplug support, EDID overriding via
     firmware interface - allows user to load a firmware for a broken
     monitor/kvm from userspace, it even has documentation for it.
   - exynos: new HDMI audio + hdmi 1.4 + virtual output driver
   - gma500: code cleanup
   - radeon: cleanups, CS optimisations, streamout support and pageflip
     fix
   - nouveau: NVD9 displayport support + more reclocking work
   - i915: re-enabling GMBUS, finish gpu patch (might help hibernation
     who knows), missed irq fixes, stencil tiling fixes, interlaced
     support, aliasesd PPGTT support for SNB/IVB, swizzling for SNB/IVB,
     semaphore fixes

  As well as the usual bunch of cleanups and fixes all over the place.

  I've got two things I'd like to merge a bit later:

   a) AMD support for all their new radeonhd 7000 series GPU and APUs.
      AMD dropped this a bit late due to insane internal review
      processes, (please AMD just follow Intel and let open source guys
      ship stuff early) however I don't want to penalise people who own
      this hardware (since its been on sale for 3-4 months and GPU hw
      doesn't exactly have a lifetime in years) and consign them to
      using closed drivers for longer than necessary.  The changes are
      well contained and just plug into the driver new gpu functionality
      so they should be fairly regression proof.  I just want to give
      them a bit of a run on the hw AMD kindly sent me.

   b) drm prime/dma-buf interface code.  This is just infrastructure
      code to expose the dma-buf stuff to drm drivers and to userspace.
      I'm not planning on pushing any driver support in this cycle
      (except maybe exynos), but I'd like to get the infrastructure code
      in so for the next cycle I can start getting the driver support
      into the individual drivers.  We have started driver support for
      i915, nouveau and udl along with I think exynos and omap in
      staging.  However this code relies on the dma-buf tree being
      pulled into your tree first since it needs the latest interfaces
      from that tree.  I'll push to get that tree sent asap.

  (oh and any warnings you see in i915 are gcc's fault from what anyone
  can see)."

Fix up trivial conflicts in arch/x86/platform/mrst/mrst.c due to the new
msic_thermal_platform_data() thermal function being added next to the
tc35876x_platform_data() i2c device function..

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (326 commits)
  drm/i915: use DDC_ADDR instead of hard-coding it
  drm/radeon: use DDC_ADDR instead of hard-coding it
  drm: remove unneeded redefinition of DDC_ADDR
  drm/exynos: added virtual display driver.
  drm: allow loading an EDID as firmware to override broken monitor
  drm/exynos: enable hdmi audio feature
  drm/exynos: add default pixel format for plane
  drm/exynos: cleanup exynos_hdmi.h
  drm/exynos: add is_local member in exynos_drm_subdrv struct
  drm/exynos: add subdrv open/close functions
  drm/exynos: remove module of exynos drm subdrv
  drm/exynos: release pending pageflip events when closed
  drm/exynos: added new funtion to get/put dma address.
  drm/exynos: update gem and buffer framework.
  drm/exynos: added mode_fixup feature and code clean.
  drm/exynos: add HDMI version 1.4 support
  drm/exynos: remove exynos_mixer.h
  gma500: Fix mmap frambuffer
  drm/radeon: Drop radeon_gem_object_(un)pin.
  drm/radeon: Restrict offset for legacy display engine.
  ...
2012-03-22 13:08:22 -07:00
Inki Dae
b73d12303e drm/exynos: added virtual display driver.
this driver would be used for wireless display. virtual display
driver has independent crtc, encoder and connector and to use
this driver, user application should send edid data to this driver
from wireless display.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-03-21 10:15:49 +00:00
Joonyoung Shim
9084f7b8a5 drm/exynos: add subdrv open/close functions
Some subdrv need open and close functions call when open and close drm.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-03-20 09:40:24 +00:00
Joonyoung Shim
132a5b915f drm/exynos: remove module of exynos drm subdrv
The exynos drm driver has several subdrv. They each can be module but it
causes unfixed probe order of exynodr drm driver and each subdrv. It
also needs some weird codes such as exynos_drm_fbdev_reinit and
exynos_drm_mode_group_reinit. This patch can remove weird codes and
clear codes through we doesn't modularity each subdrv.

Also this removes unnecessary codes related module.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-03-20 09:40:23 +00:00
Joonyoung Shim
3ab09435d5 drm/exynos: release pending pageflip events when closed
We should release pending pageflip events when closed. If not, they will
be dangling events.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-03-20 09:40:23 +00:00
Marek Szyprowski
9866b6c64b drm/exynos: use correct 'exynos-drm' name for platform device
Currently Exynos DRM driver uses DRIVER_NAME ('exynos') name for the
core platform device. This is confusing, because it doesn't refer to the
function the platform device is performing. This patch renames the
platform device to the 'exynos-drm', which matches the convention for
naming the platform devices. The name used inside DRM subsystem has not
been changed.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-03-15 11:38:59 +09:00
Inki Dae
53ef299f39 drm/exynos: added postclose to release resource.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-02-16 09:40:54 +00:00
Inki Dae
d081f56604 drm/exynos: added possible_clones setup function.
basically, all crtcs are possible to clone each other.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-02-16 09:40:47 +00:00
Joonyoung Shim
6f811502a4 drm/exynos: removed pageflip_event_list init code when closed.
if one process is terminated by ctrl-c while two processes are
using pageflip feature then for last pageflip event,
user can't get poll from kernel side so this patch fixes the problem.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyoungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-02-16 09:40:44 +00:00
Inki Dae
52c68814cd drm/exynos: extend vblank off delay time.
some platform could be entering to sleep after short time once lcd panel off
but before that vblank could be off by vblank off delay feature. at that time,
vblank doesn't have the pair between vblank_get/put. so this path makes vblank
off delay to have enough.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2011-12-29 11:21:42 +09:00
Inki Dae
0edf9936d5 drm/exynos: change driver name.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2011-12-29 11:21:42 +09:00
Joonyoung Shim
864ee9e6f6 drm/exynos: Add plane support with fimd
The exynos fimd supports 5 window overlays. Only one window overlay of
fimd is used by the crtc, so we need plane feature to use the rest
window overlays.

This creates one ioctl exynos specific - DRM_EXYNOS_PLANE_SET_ZPOS, it
is the ioctl to decide for user to assign which window overlay.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2011-12-21 15:14:17 +09:00
Joonyoung Shim
ac2bdf7314 drm/exynos: Fix compile errors
This compile errors occur by changes of
e08e96de98 commit, so exynos drm should
apply this changes.

  CC      drivers/gpu/drm/exynos/exynos_drm_drv.o
drivers/gpu/drm/exynos/exynos_drm_drv.c:185: warning: braces around scalar initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:185: warning: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:186: error: field name not in record or union initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:186: error: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:186: warning: initialization from incompatible pointer type
drivers/gpu/drm/exynos/exynos_drm_drv.c:187: error: field name not in record or union initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:187: error: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:187: warning: excess elements in scalar initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:187: warning: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:188: error: field name not in record or union initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:188: error: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:188: warning: excess elements in scalar initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:188: warning: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:189: error: field name not in record or union initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:189: error: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:189: warning: excess elements in scalar initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:189: warning: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:190: error: field name not in record or union initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:190: error: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:190: warning: excess elements in scalar initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:190: warning: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:191: error: field name not in record or union initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:191: error: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:191: warning: excess elements in scalar initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:191: warning: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:192: error: field name not in record or union initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:192: error: (near initialization for 'exynos_drm_driver.fops')
drivers/gpu/drm/exynos/exynos_drm_drv.c:192: warning: excess elements in scalar initializer
drivers/gpu/drm/exynos/exynos_drm_drv.c:192: warning: (near initialization for 'exynos_drm_driver.fops')
make[4]: *** [drivers/gpu/drm/exynos/exynos_drm_drv.o] Error 1
make[3]: *** [drivers/gpu/drm/exynos] Error 2
make[2]: *** [drivers/gpu/drm] Error 2
make[1]: *** [drivers/gpu] Error 2
make: *** [drivers] Error 2

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2011-12-21 15:14:16 +09:00
Seung-Woo Kim
7db3eba6bf drm/exynos: added kms poll for handling hpd event
this patch adds kms poll infrastructure to handle hotplug detection event

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2011-11-15 14:58:44 +09:00
Inki Dae
ccf4d883f8 drm/exynos: fixed page flip bug.
in case of using two drivers such as fimd and hdmi controller that
they have their own hardware interrupt, drm framework doesn't provide
pipe number corresponding to it. so the pipe should be set to event's
from specific crtc.

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-18 10:01:19 +01:00
Inki Dae
1c248b7d29 DRM: add DRM Driver for Samsung SoC EXYNOS4210.
This patch is a DRM Driver for Samsung SoC Exynos4210 and now enables
only FIMD yet but we will add HDMI support also in the future.

this patch is based on git repository below:
git://people.freedesktop.org/~airlied/linux.git
branch name: drm-next
commit-id: 88ef4e3f4f

you can refer to our working repository below:
http://git.infradead.org/users/kmpark/linux-2.6-samsung
branch name: samsung-drm

We tried to re-use lowlevel codes of the FIMD driver(s3c-fb.c
based on Linux framebuffer) but couldn't so because lowlevel codes
of s3c-fb.c are included internally and so FIMD module of this driver has
its own lowlevel codes.

We used GEM framework for buffer management and DMA APIs(dma_alloc_*)
for buffer allocation so we can allocate physically continuous memory
for DMA through it and also we could use CMA later if CMA is applied to
mainline.

Refer to this link for CMA(Continuous Memory Allocator):
http://lkml.org/lkml/2011/7/20/45

this driver supports only physically continuous memory(non-iommu).

Links to previous versions of the patchset:
v1: < https://lwn.net/Articles/454380/ >
v2: < http://www.spinics.net/lists/kernel/msg1224275.html >
v3: < http://www.spinics.net/lists/dri-devel/msg13755.html >
v4: < http://permalink.gmane.org/gmane.comp.video.dri.devel/60439 >
v5: < http://comments.gmane.org/gmane.comp.video.dri.devel/60802 >

Changelog v2:
DRM: add DRM_IOCTL_SAMSUNG_GEM_MMAP ioctl command.

    this feature maps user address space to physical memory region
    once user application requests DRM_IOCTL_SAMSUNG_GEM_MMAP ioctl.

DRM: code clean and add exception codes.

Changelog v3:
DRM: Support multiple irq.

    FIMD and HDMI have their own irq handler but DRM Framework can regiter
    only one irq handler this patch supports mutiple irq for Samsung SoC.

DRM: Consider modularization.

    each DRM, FIMD could be built as a module.

DRM: Have indenpendent crtc object.

    crtc isn't specific to SoC Platform so this patch gets a crtc
    to be used as common object.
    created crtc could be attached to any encoder object.

DRM: code clean and add exception codes.

Changelog v4:
DRM: remove is_defult from samsung_fb.

    is_default isn't used for default framebuffer.

DRM: code refactoring to fimd module.
    this patch is be considered with multiple display objects and
    would use its own request_irq() to register a irq handler instead of
    drm framework's one.

DRM: remove find_samsung_drm_gem_object()

DRM: move kernel private data structures and definitions to driver folder.

    samsung_drm.h would contain only public information for userspace
    ioctl interface.

DRM: code refactoring to gem modules.
    buffer module isn't dependent of gem module anymore.

DRM: fixed security issue.

DRM: remove encoder porinter from specific connector.

    samsung connector doesn't need to have generic encoder.

DRM: code clean and add exception codes.

Changelog v5:
DRM: updated fimd(display controller) driver.
    added various pixel formats, color key and pixel blending features.

DRM: removed end_buf_off from samsung_drm_overlay structure.
    this variable isn't used and end buffer address would be
    calculated by each sub driver.

DRM: use generic function for mmap_offset.
    replaced samsung_drm_gem_create_mmap_offset() and
    samsung_drm_free_mmap_offset() with generic ones applied
    to mainline recentrly.

DRM: removed unnecessary codes and added exception codes.

DRM: added comments and code clean.

Changelog v6:
DRM: added default config options.

DRM: added padding for 64-bit align.

DRM: changed prefix 'samsung' to 'exynos'

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-05 10:27:31 +01:00