linux/include/drm/drm_gem_cma_helper.h
Dave Airlie 2c1c55cb75 Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
Cross-subsystem Changes:

- device tree doc for the Mitsubishi AA070MC01 and Tianma TM070RVHG71
panels (Lukasz Majewski) and for a 2nd endpoint on stm32 (Philippe Cornu)

Core Changes:

The most important changes are:

- Add drm_driver .last_close and .output_poll_changed helpers to reduce
fbdev emulation footprint in drivers (Noralf)
- Fix plane clipping in core and for vmwgfx (Ville)

Then we have a bunch of of improvement for print and debug such as the
addition of a framebuffer debugfs file. ELD connector, HDMI and
improvements.  And a bunch of misc improvements, clean ups and style
changes and doc updates

[airlied: drop eld bits from amdgpu_dm]

Driver Changes:

- sii8620: filter unsupported modes and add DVI mode support (Maciej Purski)
- rockchip: analogix_dp: Remove unnecessary init code (Jeffy Chen)
- virtio, cirrus: add fb create_handle support to enable screenshots(Lepton Wu)
- virtio: replace reference/unreference with get/put (Aastha Gupta)
- vc4, gma500: Convert timers to use timer_setup() (Kees Cook)
- vc4: Reject HDMI modes with too high of clocks (Eric)
- vc4: Add support for more pixel formats (Dave Stevenson)
- stm: dsi: Rename driver name to "stm32-display-dsi" (Philippe Cornu)
- stm: ltdc: add a 2nd endpoint (Philippe Cornu)
- via: use monotonic time for VIA_WAIT_IRQ (Arnd Bergmann)

* tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc: (96 commits)
  drm/bridge: tc358767: add copyright lines
  MAINTAINERS: change maintainer for Rockchip drm drivers
  drm/vblank: Fix vblank timestamp debugs
  drm/via: use monotonic time for VIA_WAIT_IRQ
  dma-buf: Fix ifnullfree.cocci warnings
  drm/printer: Add drm_vprintf()
  drm/edid: Allow HDMI infoframe without VIC or S3D
  video/hdmi: Allow "empty" HDMI infoframes
  dma-buf/fence: Fix lock inversion within dma-fence-array
  drm/sti: Handle return value of platform_get_irq_byname
  drm/vc4: Add support for NV21 and NV61.
  drm/vc4: Use .pixel_order instead of custom .flip_cbcr
  drm/vc4: Add support for DRM_FORMAT_RGB888 and DRM_FORMAT_BGR888
  drm: Move drm_plane_helper_check_state() into drm_atomic_helper.c
  drm: Check crtc_state->enable rather than crtc->enabled in drm_plane_helper_check_state()
  drm/vmwgfx: Try to fix plane clipping
  drm/vmwgfx: Use drm_plane_helper_check_state()
  drm/vmwgfx: Remove bogus crtc coords vs fb size check
  gpu: gma500: remove unneeded DRIVER_LICENSE #define
  drm: don't link DP aux i2c adapter to the hardware device node
  ...
2017-12-04 05:42:49 +10:00

107 lines
3.5 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __DRM_GEM_CMA_HELPER_H__
#define __DRM_GEM_CMA_HELPER_H__
#include <drm/drmP.h>
#include <drm/drm_gem.h>
/**
* struct drm_gem_cma_object - GEM object backed by CMA memory allocations
* @base: base GEM object
* @paddr: physical address of the backing memory
* @sgt: scatter/gather table for imported PRIME buffers. The table can have
* more than one entry but they are guaranteed to have contiguous
* DMA addresses.
* @vaddr: kernel virtual address of the backing memory
*/
struct drm_gem_cma_object {
struct drm_gem_object base;
dma_addr_t paddr;
struct sg_table *sgt;
/* For objects with DMA memory allocated by GEM CMA */
void *vaddr;
};
#define to_drm_gem_cma_obj(gem_obj) \
container_of(gem_obj, struct drm_gem_cma_object, base)
#ifndef CONFIG_MMU
#define DRM_GEM_CMA_UNMAPPED_AREA_FOPS \
.get_unmapped_area = drm_gem_cma_get_unmapped_area,
#else
#define DRM_GEM_CMA_UNMAPPED_AREA_FOPS
#endif
/**
* DEFINE_DRM_GEM_CMA_FOPS() - macro to generate file operations for CMA drivers
* @name: name for the generated structure
*
* This macro autogenerates a suitable &struct file_operations for CMA based
* drivers, which can be assigned to &drm_driver.fops. Note that this structure
* cannot be shared between drivers, because it contains a reference to the
* current module using THIS_MODULE.
*
* Note that the declaration is already marked as static - if you need a
* non-static version of this you're probably doing it wrong and will break the
* THIS_MODULE reference by accident.
*/
#define DEFINE_DRM_GEM_CMA_FOPS(name) \
static const struct file_operations name = {\
.owner = THIS_MODULE,\
.open = drm_open,\
.release = drm_release,\
.unlocked_ioctl = drm_ioctl,\
.compat_ioctl = drm_compat_ioctl,\
.poll = drm_poll,\
.read = drm_read,\
.llseek = noop_llseek,\
.mmap = drm_gem_cma_mmap,\
DRM_GEM_CMA_UNMAPPED_AREA_FOPS \
}
/* free GEM object */
void drm_gem_cma_free_object(struct drm_gem_object *gem_obj);
/* create memory region for DRM framebuffer */
int drm_gem_cma_dumb_create_internal(struct drm_file *file_priv,
struct drm_device *drm,
struct drm_mode_create_dumb *args);
/* create memory region for DRM framebuffer */
int drm_gem_cma_dumb_create(struct drm_file *file_priv,
struct drm_device *drm,
struct drm_mode_create_dumb *args);
/* set vm_flags and we can change the VM attribute to other one at here */
int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma);
/* allocate physical memory */
struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
size_t size);
extern const struct vm_operations_struct drm_gem_cma_vm_ops;
#ifndef CONFIG_MMU
unsigned long drm_gem_cma_get_unmapped_area(struct file *filp,
unsigned long addr,
unsigned long len,
unsigned long pgoff,
unsigned long flags);
#endif
void drm_gem_cma_print_info(struct drm_printer *p, unsigned int indent,
const struct drm_gem_object *obj);
struct sg_table *drm_gem_cma_prime_get_sg_table(struct drm_gem_object *obj);
struct drm_gem_object *
drm_gem_cma_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach,
struct sg_table *sgt);
int drm_gem_cma_prime_mmap(struct drm_gem_object *obj,
struct vm_area_struct *vma);
void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj);
void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
#endif /* __DRM_GEM_CMA_HELPER_H__ */