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_frame_info { 27 struct drm_framebuffer *fb; 28 struct drm_rect src, dst; 29 struct iosys_map map[DRM_FORMAT_MAX_PLANES]; 30 unsigned int offset; 31 unsigned int pitch; 32 unsigned int cpp; 33 }; 34 35 struct pixel_argb_u16 { 36 u16 a, r, g, b; 37 }; 38 39 struct line_buffer { 40 size_t n_pixels; 41 struct pixel_argb_u16 *pixels; 42 }; 43 44 struct vkms_writeback_job { 45 struct iosys_map data[DRM_FORMAT_MAX_PLANES]; 46 struct vkms_frame_info wb_frame_info; 47 void (*wb_write)(struct vkms_frame_info *frame_info, 48 const struct line_buffer *buffer, int y); 49 }; 50 51 /** 52 * vkms_plane_state - Driver specific plane state 53 * @base: base plane state 54 * @frame_info: data required for composing computation 55 */ 56 struct vkms_plane_state { 57 struct drm_shadow_plane_state base; 58 struct vkms_frame_info *frame_info; 59 void (*plane_read)(struct line_buffer *buffer, 60 const struct vkms_frame_info *frame_info, int y); 61 }; 62 63 struct vkms_plane { 64 struct drm_plane base; 65 }; 66 67 /** 68 * vkms_crtc_state - Driver specific CRTC state 69 * @base: base CRTC state 70 * @composer_work: work struct to compose and add CRC entries 71 * @n_frame_start: start frame number for computed CRC 72 * @n_frame_end: end frame number for computed CRC 73 */ 74 struct vkms_crtc_state { 75 struct drm_crtc_state base; 76 struct work_struct composer_work; 77 78 int num_active_planes; 79 /* stack of active planes for crc computation, should be in z order */ 80 struct vkms_plane_state **active_planes; 81 struct vkms_writeback_job *active_writeback; 82 83 /* below four are protected by vkms_output.composer_lock */ 84 bool crc_pending; 85 bool wb_pending; 86 u64 frame_start; 87 u64 frame_end; 88 }; 89 90 struct vkms_output { 91 struct drm_crtc crtc; 92 struct drm_encoder encoder; 93 struct drm_connector connector; 94 struct drm_writeback_connector wb_connector; 95 struct hrtimer vblank_hrtimer; 96 ktime_t period_ns; 97 struct drm_pending_vblank_event *event; 98 /* ordered wq for composer_work */ 99 struct workqueue_struct *composer_workq; 100 /* protects concurrent access to composer */ 101 spinlock_t lock; 102 103 /* protected by @lock */ 104 bool composer_enabled; 105 struct vkms_crtc_state *composer_state; 106 107 spinlock_t composer_lock; 108 }; 109 110 struct vkms_device; 111 112 struct vkms_config { 113 bool writeback; 114 bool cursor; 115 bool overlay; 116 /* only set when instantiated */ 117 struct vkms_device *dev; 118 }; 119 120 struct vkms_device { 121 struct drm_device drm; 122 struct platform_device *platform; 123 struct vkms_output output; 124 const struct vkms_config *config; 125 }; 126 127 #define drm_crtc_to_vkms_output(target) \ 128 container_of(target, struct vkms_output, crtc) 129 130 #define drm_device_to_vkms_device(target) \ 131 container_of(target, struct vkms_device, drm) 132 133 #define to_vkms_crtc_state(target)\ 134 container_of(target, struct vkms_crtc_state, base) 135 136 #define to_vkms_plane_state(target)\ 137 container_of(target, struct vkms_plane_state, base.base) 138 139 /* CRTC */ 140 int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, 141 struct drm_plane *primary, struct drm_plane *cursor); 142 143 int vkms_output_init(struct vkms_device *vkmsdev, int index); 144 145 struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, 146 enum drm_plane_type type, int index); 147 148 /* CRC Support */ 149 const char *const *vkms_get_crc_sources(struct drm_crtc *crtc, 150 size_t *count); 151 int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name); 152 int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name, 153 size_t *values_cnt); 154 155 /* Composer Support */ 156 void vkms_composer_worker(struct work_struct *work); 157 void vkms_set_composer(struct vkms_output *out, bool enabled); 158 159 /* Writeback */ 160 int vkms_enable_writeback_connector(struct vkms_device *vkmsdev); 161 162 #endif /* _VKMS_DRV_H_ */ 163