1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 3 #ifndef _VKMS_DRV_H_ 4 #define _VKMS_DRV_H_ 5 6 #include <linux/hrtimer.h> 7 8 #include <drm/drm.h> 9 #include <drm/drm_gem.h> 10 #include <drm/drm_gem_atomic_helper.h> 11 #include <drm/drm_encoder.h> 12 #include <drm/drm_writeback.h> 13 14 #define XRES_MIN 20 15 #define YRES_MIN 20 16 17 #define XRES_DEF 1024 18 #define YRES_DEF 768 19 20 #define XRES_MAX 8192 21 #define YRES_MAX 8192 22 23 struct vkms_composer { 24 struct drm_framebuffer fb; 25 struct drm_rect src, dst; 26 struct dma_buf_map map[4]; 27 unsigned int offset; 28 unsigned int pitch; 29 unsigned int cpp; 30 }; 31 32 /** 33 * vkms_plane_state - Driver specific plane state 34 * @base: base plane state 35 * @composer: data required for composing computation 36 */ 37 struct vkms_plane_state { 38 struct drm_shadow_plane_state base; 39 struct vkms_composer *composer; 40 }; 41 42 struct vkms_plane { 43 struct drm_plane base; 44 }; 45 46 /** 47 * vkms_crtc_state - Driver specific CRTC state 48 * @base: base CRTC state 49 * @composer_work: work struct to compose and add CRC entries 50 * @n_frame_start: start frame number for computed CRC 51 * @n_frame_end: end frame number for computed CRC 52 */ 53 struct vkms_crtc_state { 54 struct drm_crtc_state base; 55 struct work_struct composer_work; 56 57 int num_active_planes; 58 /* stack of active planes for crc computation, should be in z order */ 59 struct vkms_plane_state **active_planes; 60 void *active_writeback; 61 62 /* below four are protected by vkms_output.composer_lock */ 63 bool crc_pending; 64 bool wb_pending; 65 u64 frame_start; 66 u64 frame_end; 67 }; 68 69 struct vkms_output { 70 struct drm_crtc crtc; 71 struct drm_encoder encoder; 72 struct drm_connector connector; 73 struct drm_writeback_connector wb_connector; 74 struct hrtimer vblank_hrtimer; 75 ktime_t period_ns; 76 struct drm_pending_vblank_event *event; 77 /* ordered wq for composer_work */ 78 struct workqueue_struct *composer_workq; 79 /* protects concurrent access to composer */ 80 spinlock_t lock; 81 82 /* protected by @lock */ 83 bool composer_enabled; 84 struct vkms_crtc_state *composer_state; 85 86 spinlock_t composer_lock; 87 }; 88 89 struct vkms_device; 90 91 struct vkms_config { 92 bool writeback; 93 bool cursor; 94 bool overlay; 95 /* only set when instantiated */ 96 struct vkms_device *dev; 97 }; 98 99 struct vkms_device { 100 struct drm_device drm; 101 struct platform_device *platform; 102 struct vkms_output output; 103 const struct vkms_config *config; 104 }; 105 106 #define drm_crtc_to_vkms_output(target) \ 107 container_of(target, struct vkms_output, crtc) 108 109 #define drm_device_to_vkms_device(target) \ 110 container_of(target, struct vkms_device, drm) 111 112 #define to_vkms_crtc_state(target)\ 113 container_of(target, struct vkms_crtc_state, base) 114 115 #define to_vkms_plane_state(target)\ 116 container_of(target, struct vkms_plane_state, base.base) 117 118 /* CRTC */ 119 int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, 120 struct drm_plane *primary, struct drm_plane *cursor); 121 122 int vkms_output_init(struct vkms_device *vkmsdev, int index); 123 124 struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, 125 enum drm_plane_type type, int index); 126 127 /* CRC Support */ 128 const char *const *vkms_get_crc_sources(struct drm_crtc *crtc, 129 size_t *count); 130 int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name); 131 int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name, 132 size_t *values_cnt); 133 134 /* Composer Support */ 135 void vkms_composer_worker(struct work_struct *work); 136 void vkms_set_composer(struct vkms_output *out, bool enabled); 137 138 /* Writeback */ 139 int vkms_enable_writeback_connector(struct vkms_device *vkmsdev); 140 141 #endif /* _VKMS_DRV_H_ */ 142