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