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