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DRM: Armada: Add Armada DRM driver

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This patch adds support for the pair of LCD controllers on the Marvell
Armada 510 SoCs.  This driver supports:
- multiple contiguous scanout buffers for video and graphics
- shm backed cacheable buffer objects for X pixmaps for Vivante GPU
  acceleration
- dual lcd0 and lcd1 crt operation
- video overlay on each LCD crt via DRM planes
- page flipping of the main scanout buffers
- DRM prime for buffer export/import

This driver is trivial to extend to other Armada SoCs.

Included in this commit is the core driver with no output support; output
support is platform and encoder driver dependent.

Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2012-08-15 13:59:49 +01:00
commit 96f60e37dc
24 changed files with 4015 additions and 0 deletions
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45
include/uapi/drm/armada_drm.h Normal file
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/*
* Copyright (C) 2012 Russell King
* With inspiration from the i915 driver
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef DRM_ARMADA_IOCTL_H
#define DRM_ARMADA_IOCTL_H
#define DRM_ARMADA_GEM_CREATE 0x00
#define DRM_ARMADA_GEM_MMAP 0x02
#define DRM_ARMADA_GEM_PWRITE 0x03
#define ARMADA_IOCTL(dir, name, str) \
DRM_##dir(DRM_COMMAND_BASE + DRM_ARMADA_##name, struct drm_armada_##str)
struct drm_armada_gem_create {
uint32_t handle;
uint32_t size;
};
#define DRM_IOCTL_ARMADA_GEM_CREATE \
ARMADA_IOCTL(IOWR, GEM_CREATE, gem_create)
struct drm_armada_gem_mmap {
uint32_t handle;
uint32_t pad;
uint64_t offset;
uint64_t size;
uint64_t addr;
};
#define DRM_IOCTL_ARMADA_GEM_MMAP \
ARMADA_IOCTL(IOWR, GEM_MMAP, gem_mmap)
struct drm_armada_gem_pwrite {
uint64_t ptr;
uint32_t handle;
uint32_t offset;
uint32_t size;
};
#define DRM_IOCTL_ARMADA_GEM_PWRITE \
ARMADA_IOCTL(IOW, GEM_PWRITE, gem_pwrite)
#endif