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_framebuffer.h> 10 #include <drm/drm_gem.h> 11 #include <drm/drm_gem_atomic_helper.h> 12 #include <drm/drm_encoder.h> 13 #include <drm/drm_writeback.h> 14 15 #define XRES_MIN 20 16 #define YRES_MIN 20 17 18 #define XRES_DEF 1024 19 #define YRES_DEF 768 20 21 #define XRES_MAX 8192 22 #define YRES_MAX 8192 23 24 #define NUM_OVERLAY_PLANES 8 25 26 struct vkms_writeback_job { 27 struct iosys_map map[DRM_FORMAT_MAX_PLANES]; 28 struct iosys_map data[DRM_FORMAT_MAX_PLANES]; 29 }; 30 31 struct vkms_composer { 32 struct drm_framebuffer fb; 33 struct drm_rect src, dst; 34 struct iosys_map map[4]; 35 unsigned int offset; 36 unsigned int pitch; 37 unsigned int cpp; 38 }; 39 40 /** 41 * vkms_plane_state - Driver specific plane state 42 * @base: base plane state 43 * @composer: data required for composing computation 44 */ 45 struct vkms_plane_state { 46 struct drm_shadow_plane_state base; 47 struct vkms_composer *composer; 48 }; 49 50 struct vkms_plane { 51 struct drm_plane base; 52 }; 53 54 /** 55 * vkms_crtc_state - Driver specific CRTC state 56 * @base: base CRTC state 57 * @composer_work: work struct to compose and add CRC entries 58 * @n_frame_start: start frame number for computed CRC 59 * @n_frame_end: end frame number for computed CRC 60 */ 61 struct vkms_crtc_state { 62 struct drm_crtc_state base; 63 struct work_struct composer_work; 64 65 int num_active_planes; 66 /* stack of active planes for crc computation, should be in z order */ 67 struct vkms_plane_state **active_planes; 68 struct vkms_writeback_job *active_writeback; 69 70 /* below four are protected by vkms_output.composer_lock */ 71 bool crc_pending; 72 bool wb_pending; 73 u64 frame_start; 74 u64 frame_end; 75 }; 76 77 struct vkms_output { 78 struct drm_crtc crtc; 79 struct drm_encoder encoder; 80 struct drm_connector connector; 81 struct drm_writeback_connector wb_connector; 82 struct hrtimer vblank_hrtimer; 83 ktime_t period_ns; 84 struct drm_pending_vblank_event *event; 85 /* ordered wq for composer_work */ 86 struct workqueue_struct *composer_workq; 87 /* protects concurrent access to composer */ 88 spinlock_t lock; 89 90 /* protected by @lock */ 91 bool composer_enabled; 92 struct vkms_crtc_state *composer_state; 93 94 spinlock_t composer_lock; 95 }; 96 97 struct vkms_device; 98 99 struct vkms_config { 100 bool writeback; 101 bool cursor; 102 bool overlay; 103 /* only set when instantiated */ 104 struct vkms_device *dev; 105 }; 106 107 struct vkms_device { 108 struct drm_device drm; 109 struct platform_device *platform; 110 struct vkms_output output; 111 const struct vkms_config *config; 112 }; 113 114 #define drm_crtc_to_vkms_output(target) \ 115 container_of(target, struct vkms_output, crtc) 116 117 #define drm_device_to_vkms_device(target) \ 118 container_of(target, struct vkms_device, drm) 119 120 #define to_vkms_crtc_state(target)\ 121 container_of(target, struct vkms_crtc_state, base) 122 123 #define to_vkms_plane_state(target)\ 124 container_of(target, struct vkms_plane_state, base.base) 125 126 /* CRTC */ 127 int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, 128 struct drm_plane *primary, struct drm_plane *cursor); 129 130 int vkms_output_init(struct vkms_device *vkmsdev, int index); 131 132 struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, 133 enum drm_plane_type type, int index); 134 135 /* CRC Support */ 136 const char *const *vkms_get_crc_sources(struct drm_crtc *crtc, 137 size_t *count); 138 int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name); 139 int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name, 140 size_t *values_cnt); 141 142 /* Composer Support */ 143 void vkms_composer_worker(struct work_struct *work); 144 void vkms_set_composer(struct vkms_output *out, bool enabled); 145 146 /* Writeback */ 147 int vkms_enable_writeback_connector(struct vkms_device *vkmsdev); 148 149 #endif /* _VKMS_DRV_H_ */ 150