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