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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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96f60e37dc
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>
53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
/*
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* Copyright (C) 2012 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef ARMADA_GEM_H
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#define ARMADA_GEM_H
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/* GEM */
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struct armada_gem_object {
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struct drm_gem_object obj;
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void *addr;
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phys_addr_t phys_addr;
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resource_size_t dev_addr;
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struct drm_mm_node *linear; /* for linear backed */
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struct page *page; /* for page backed */
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struct sg_table *sgt; /* for imported */
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void (*update)(void *);
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void *update_data;
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};
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extern const struct vm_operations_struct armada_gem_vm_ops;
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#define drm_to_armada_gem(o) container_of(o, struct armada_gem_object, obj)
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void armada_gem_free_object(struct drm_gem_object *);
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int armada_gem_linear_back(struct drm_device *, struct armada_gem_object *);
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void *armada_gem_map_object(struct drm_device *, struct armada_gem_object *);
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struct armada_gem_object *armada_gem_alloc_private_object(struct drm_device *,
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size_t);
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int armada_gem_dumb_create(struct drm_file *, struct drm_device *,
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struct drm_mode_create_dumb *);
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int armada_gem_dumb_map_offset(struct drm_file *, struct drm_device *,
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uint32_t, uint64_t *);
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int armada_gem_dumb_destroy(struct drm_file *, struct drm_device *,
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uint32_t);
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struct dma_buf *armada_gem_prime_export(struct drm_device *dev,
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struct drm_gem_object *obj, int flags);
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struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
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struct dma_buf *);
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int armada_gem_map_import(struct armada_gem_object *);
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static inline struct armada_gem_object *armada_gem_object_lookup(
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struct drm_device *dev, struct drm_file *dfile, unsigned handle)
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{
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struct drm_gem_object *obj = drm_gem_object_lookup(dev, dfile, handle);
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return obj ? drm_to_armada_gem(obj) : NULL;
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}
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#endif
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