| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2016 Noralf Trønnes |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | */ |
| 9 | |
| 10 | #ifndef __LINUX_TINYDRM_H |
| 11 | #define __LINUX_TINYDRM_H |
| 12 | |
| 13 | #include <drm/drm_gem_cma_helper.h> |
| 14 | #include <drm/drm_fb_cma_helper.h> |
| 15 | #include <drm/drm_simple_kms_helper.h> |
| 16 | |
| 17 | /** |
| 18 | * struct tinydrm_device - tinydrm device |
| 19 | * @drm: DRM device |
| 20 | * @pipe: Display pipe structure |
| 21 | * @dirty_lock: Serializes framebuffer flushing |
| 22 | * @fbdev_cma: CMA fbdev structure |
| 23 | * @suspend_state: Atomic state when suspended |
| 24 | * @fb_funcs: Framebuffer functions used when creating framebuffers |
| 25 | */ |
| 26 | struct tinydrm_device { |
| 27 | struct drm_device *drm; |
| 28 | struct drm_simple_display_pipe pipe; |
| 29 | struct mutex dirty_lock; |
| 30 | struct drm_fbdev_cma *fbdev_cma; |
| 31 | struct drm_atomic_state *suspend_state; |
| 32 | const struct drm_framebuffer_funcs *fb_funcs; |
| 33 | }; |
| 34 | |
| 35 | static inline struct tinydrm_device * |
| 36 | pipe_to_tinydrm(struct drm_simple_display_pipe *pipe) |
| 37 | { |
| 38 | return container_of(pipe, struct tinydrm_device, pipe); |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * TINYDRM_GEM_DRIVER_OPS - default tinydrm gem operations |
| 43 | * |
| 44 | * This macro provides a shortcut for setting the tinydrm GEM operations in |
| 45 | * the &drm_driver structure. |
| 46 | */ |
| 47 | #define TINYDRM_GEM_DRIVER_OPS \ |
| 48 | .gem_free_object = tinydrm_gem_cma_free_object, \ |
| 49 | .gem_vm_ops = &drm_gem_cma_vm_ops, \ |
| 50 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, \ |
| 51 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, \ |
| 52 | .gem_prime_import = drm_gem_prime_import, \ |
| 53 | .gem_prime_export = drm_gem_prime_export, \ |
| 54 | .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, \ |
| 55 | .gem_prime_import_sg_table = tinydrm_gem_cma_prime_import_sg_table, \ |
| 56 | .gem_prime_vmap = drm_gem_cma_prime_vmap, \ |
| 57 | .gem_prime_vunmap = drm_gem_cma_prime_vunmap, \ |
| 58 | .gem_prime_mmap = drm_gem_cma_prime_mmap, \ |
| 59 | .dumb_create = drm_gem_cma_dumb_create |
| 60 | |
| 61 | /** |
| 62 | * TINYDRM_MODE - tinydrm display mode |
| 63 | * @hd: Horizontal resolution, width |
| 64 | * @vd: Vertical resolution, height |
| 65 | * @hd_mm: Display width in millimeters |
| 66 | * @vd_mm: Display height in millimeters |
| 67 | * |
| 68 | * This macro creates a &drm_display_mode for use with tinydrm. |
| 69 | */ |
| 70 | #define TINYDRM_MODE(hd, vd, hd_mm, vd_mm) \ |
| 71 | .hdisplay = (hd), \ |
| 72 | .hsync_start = (hd), \ |
| 73 | .hsync_end = (hd), \ |
| 74 | .htotal = (hd), \ |
| 75 | .vdisplay = (vd), \ |
| 76 | .vsync_start = (vd), \ |
| 77 | .vsync_end = (vd), \ |
| 78 | .vtotal = (vd), \ |
| 79 | .width_mm = (hd_mm), \ |
| 80 | .height_mm = (vd_mm), \ |
| 81 | .type = DRM_MODE_TYPE_DRIVER, \ |
| 82 | .clock = 1 /* pass validation */ |
| 83 | |
| 84 | void tinydrm_lastclose(struct drm_device *drm); |
| 85 | void tinydrm_gem_cma_free_object(struct drm_gem_object *gem_obj); |
| 86 | struct drm_gem_object * |
| 87 | tinydrm_gem_cma_prime_import_sg_table(struct drm_device *drm, |
| 88 | struct dma_buf_attachment *attach, |
| 89 | struct sg_table *sgt); |
| 90 | int devm_tinydrm_init(struct device *parent, struct tinydrm_device *tdev, |
| 91 | const struct drm_framebuffer_funcs *fb_funcs, |
| 92 | struct drm_driver *driver); |
| 93 | int devm_tinydrm_register(struct tinydrm_device *tdev); |
| 94 | void tinydrm_shutdown(struct tinydrm_device *tdev); |
| 95 | int tinydrm_suspend(struct tinydrm_device *tdev); |
| 96 | int tinydrm_resume(struct tinydrm_device *tdev); |
| 97 | |
| 98 | void tinydrm_display_pipe_update(struct drm_simple_display_pipe *pipe, |
| 99 | struct drm_plane_state *old_state); |
| 100 | int tinydrm_display_pipe_prepare_fb(struct drm_simple_display_pipe *pipe, |
| 101 | struct drm_plane_state *plane_state); |
| 102 | int |
| 103 | tinydrm_display_pipe_init(struct tinydrm_device *tdev, |
| 104 | const struct drm_simple_display_pipe_funcs *funcs, |
| 105 | int connector_type, |
| 106 | const uint32_t *formats, |
| 107 | unsigned int format_count, |
| 108 | const struct drm_display_mode *mode, |
| 109 | unsigned int rotation); |
| 110 | |
| 111 | #endif /* __LINUX_TINYDRM_H */ |