114 строки
3.8 KiB
C
114 строки
3.8 KiB
C
/*
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* Copyright (C) 2016 Noralf Trønnes
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __LINUX_TINYDRM_H
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#define __LINUX_TINYDRM_H
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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#include <drm/drm_simple_kms_helper.h>
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/**
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* struct tinydrm_device - tinydrm device
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* @drm: DRM device
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* @pipe: Display pipe structure
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* @dirty_lock: Serializes framebuffer flushing
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* @fbdev_cma: CMA fbdev structure
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* @suspend_state: Atomic state when suspended
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* @fb_funcs: Framebuffer functions used when creating framebuffers
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*/
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struct tinydrm_device {
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struct drm_device *drm;
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struct drm_simple_display_pipe pipe;
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struct mutex dirty_lock;
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struct drm_fbdev_cma *fbdev_cma;
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struct drm_atomic_state *suspend_state;
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const struct drm_framebuffer_funcs *fb_funcs;
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};
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static inline struct tinydrm_device *
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pipe_to_tinydrm(struct drm_simple_display_pipe *pipe)
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{
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return container_of(pipe, struct tinydrm_device, pipe);
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}
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/**
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* TINYDRM_GEM_DRIVER_OPS - default tinydrm gem operations
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*
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* This macro provides a shortcut for setting the tinydrm GEM operations in
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* the &drm_driver structure.
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*/
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#define TINYDRM_GEM_DRIVER_OPS \
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.gem_free_object = tinydrm_gem_cma_free_object, \
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.gem_vm_ops = &drm_gem_cma_vm_ops, \
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.prime_handle_to_fd = drm_gem_prime_handle_to_fd, \
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.prime_fd_to_handle = drm_gem_prime_fd_to_handle, \
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.gem_prime_import = drm_gem_prime_import, \
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.gem_prime_export = drm_gem_prime_export, \
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.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, \
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.gem_prime_import_sg_table = tinydrm_gem_cma_prime_import_sg_table, \
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.gem_prime_vmap = drm_gem_cma_prime_vmap, \
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.gem_prime_vunmap = drm_gem_cma_prime_vunmap, \
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.gem_prime_mmap = drm_gem_cma_prime_mmap, \
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.dumb_create = drm_gem_cma_dumb_create, \
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.dumb_map_offset = drm_gem_cma_dumb_map_offset, \
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.dumb_destroy = drm_gem_dumb_destroy
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/**
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* TINYDRM_MODE - tinydrm display mode
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* @hd: Horizontal resolution, width
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* @vd: Vertical resolution, height
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* @hd_mm: Display width in millimeters
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* @vd_mm: Display height in millimeters
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*
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* This macro creates a &drm_display_mode for use with tinydrm.
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*/
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#define TINYDRM_MODE(hd, vd, hd_mm, vd_mm) \
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.hdisplay = (hd), \
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.hsync_start = (hd), \
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.hsync_end = (hd), \
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.htotal = (hd), \
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.vdisplay = (vd), \
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.vsync_start = (vd), \
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.vsync_end = (vd), \
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.vtotal = (vd), \
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.width_mm = (hd_mm), \
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.height_mm = (vd_mm), \
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.type = DRM_MODE_TYPE_DRIVER, \
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.clock = 1 /* pass validation */
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void tinydrm_lastclose(struct drm_device *drm);
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void tinydrm_gem_cma_free_object(struct drm_gem_object *gem_obj);
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struct drm_gem_object *
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tinydrm_gem_cma_prime_import_sg_table(struct drm_device *drm,
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struct dma_buf_attachment *attach,
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struct sg_table *sgt);
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int devm_tinydrm_init(struct device *parent, struct tinydrm_device *tdev,
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const struct drm_framebuffer_funcs *fb_funcs,
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struct drm_driver *driver);
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int devm_tinydrm_register(struct tinydrm_device *tdev);
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void tinydrm_shutdown(struct tinydrm_device *tdev);
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int tinydrm_suspend(struct tinydrm_device *tdev);
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int tinydrm_resume(struct tinydrm_device *tdev);
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void tinydrm_display_pipe_update(struct drm_simple_display_pipe *pipe,
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struct drm_plane_state *old_state);
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int tinydrm_display_pipe_prepare_fb(struct drm_simple_display_pipe *pipe,
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struct drm_plane_state *plane_state);
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int
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tinydrm_display_pipe_init(struct tinydrm_device *tdev,
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const struct drm_simple_display_pipe_funcs *funcs,
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int connector_type,
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const uint32_t *formats,
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unsigned int format_count,
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const struct drm_display_mode *mode,
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unsigned int rotation);
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#endif /* __LINUX_TINYDRM_H */
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