linux/drivers/gpu/drm/armada/armada_gem.h
Russell King 96f60e37dc DRM: Armada: Add Armada DRM driver
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>
2013-10-12 10:13:40 +01:00

53 lines
1.8 KiB
C

/*
* Copyright (C) 2012 Russell King
*
* 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 ARMADA_GEM_H
#define ARMADA_GEM_H
/* GEM */
struct armada_gem_object {
struct drm_gem_object obj;
void *addr;
phys_addr_t phys_addr;
resource_size_t dev_addr;
struct drm_mm_node *linear; /* for linear backed */
struct page *page; /* for page backed */
struct sg_table *sgt; /* for imported */
void (*update)(void *);
void *update_data;
};
extern const struct vm_operations_struct armada_gem_vm_ops;
#define drm_to_armada_gem(o) container_of(o, struct armada_gem_object, obj)
void armada_gem_free_object(struct drm_gem_object *);
int armada_gem_linear_back(struct drm_device *, struct armada_gem_object *);
void *armada_gem_map_object(struct drm_device *, struct armada_gem_object *);
struct armada_gem_object *armada_gem_alloc_private_object(struct drm_device *,
size_t);
int armada_gem_dumb_create(struct drm_file *, struct drm_device *,
struct drm_mode_create_dumb *);
int armada_gem_dumb_map_offset(struct drm_file *, struct drm_device *,
uint32_t, uint64_t *);
int armada_gem_dumb_destroy(struct drm_file *, struct drm_device *,
uint32_t);
struct dma_buf *armada_gem_prime_export(struct drm_device *dev,
struct drm_gem_object *obj, int flags);
struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
struct dma_buf *);
int armada_gem_map_import(struct armada_gem_object *);
static inline struct armada_gem_object *armada_gem_object_lookup(
struct drm_device *dev, struct drm_file *dfile, unsigned handle)
{
struct drm_gem_object *obj = drm_gem_object_lookup(dev, dfile, handle);
return obj ? drm_to_armada_gem(obj) : NULL;
}
#endif