diff options
| author | Christian König <christian.koenig@amd.com> | 2013-01-21 16:58:46 +0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-02-01 01:24:47 +0400 |
| commit | 14adc89298f894816ea2f3aef4d8d2d6ede18575 (patch) | |
| tree | cef2d3b4a3e26fbe4b509491b446cd476be5a07d /drivers/gpu/drm/radeon/Kconfig | |
| parent | 0fcb6155cb5c146b57a8c50e35afb9b7cfbde394 (diff) | |
| download | linux-14adc89298f894816ea2f3aef4d8d2d6ede18575.tar.xz | |
drm/radeon: Deprecate UMS support v2
KMS support is out and stable for a couple of years now and
the userspace code has deprecated or abandoned the old UMS interface.
So make the KMS interface the default and deprecate the UMS interface
in the kernel as well.
v2: rebased on alex/drm-next-3.9-wip
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/Kconfig')
| -rw-r--r-- | drivers/gpu/drm/radeon/Kconfig | 33 |
1 files changed, 5 insertions, 28 deletions
diff --git a/drivers/gpu/drm/radeon/Kconfig b/drivers/gpu/drm/radeon/Kconfig index ea92bbe3ed37..970f8e92dbb7 100644 --- a/drivers/gpu/drm/radeon/Kconfig +++ b/drivers/gpu/drm/radeon/Kconfig @@ -1,31 +1,8 @@ -config DRM_RADEON_KMS - bool "Enable modesetting on radeon by default - NEW DRIVER" +config DRM_RADEON_UMS + bool "Enable userspace modesetting on radeon (DEPRECATED)" depends on DRM_RADEON - select BACKLIGHT_CLASS_DEVICE help - Choose this option if you want kernel modesetting enabled by default. + Choose this option if you still need userspace modesetting. - This is a completely new driver. It's only part of the existing drm - for compatibility reasons. It requires an entirely different graphics - stack above it and works very differently from the old drm stack. - i.e. don't enable this unless you know what you are doing it may - cause issues or bugs compared to the previous userspace driver stack. - - When kernel modesetting is enabled the IOCTL of radeon/drm - driver are considered as invalid and an error message is printed - in the log and they return failure. - - KMS enabled userspace will use new API to talk with the radeon/drm - driver. The new API provide functions to create/destroy/share/mmap - buffer object which are then managed by the kernel memory manager - (here TTM). In order to submit command to the GPU the userspace - provide a buffer holding the command stream, along this buffer - userspace have to provide a list of buffer object used by the - command stream. The kernel radeon driver will then place buffer - in GPU accessible memory and will update command stream to reflect - the position of the different buffers. - - The kernel will also perform security check on command stream - provided by the user, we want to catch and forbid any illegal use - of the GPU such as DMA into random system memory or into memory - not owned by the process supplying the command stream. + Userspace modesetting is deprecated for quite some time now, so + enable this only if you have ancient versions of the DDX drivers. |