1 /* SPDX-License-Identifier: GPL-2.0+ */
6 #include <linux/hrtimer.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>
24 #define NUM_OVERLAY_PLANES 8
26 #define VKMS_LUT_SIZE 256
28 struct vkms_frame_info {
29 struct drm_framebuffer *fb;
30 struct drm_rect src, dst;
31 struct drm_rect rotated;
32 struct iosys_map map[DRM_FORMAT_MAX_PLANES];
33 unsigned int rotation;
39 struct pixel_argb_u16 {
45 struct pixel_argb_u16 *pixels;
48 struct vkms_writeback_job {
49 struct iosys_map data[DRM_FORMAT_MAX_PLANES];
50 struct vkms_frame_info wb_frame_info;
51 void (*pixel_write)(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel);
55 * vkms_plane_state - Driver specific plane state
56 * @base: base plane state
57 * @frame_info: data required for composing computation
59 struct vkms_plane_state {
60 struct drm_shadow_plane_state base;
61 struct vkms_frame_info *frame_info;
62 void (*pixel_read)(u8 *src_buffer, struct pixel_argb_u16 *out_pixel);
66 struct drm_plane base;
69 struct vkms_color_lut {
70 struct drm_color_lut *base;
72 s64 channel_value2index_ratio;
76 * vkms_crtc_state - Driver specific CRTC state
77 * @base: base CRTC state
78 * @composer_work: work struct to compose and add CRC entries
79 * @n_frame_start: start frame number for computed CRC
80 * @n_frame_end: end frame number for computed CRC
82 struct vkms_crtc_state {
83 struct drm_crtc_state base;
84 struct work_struct composer_work;
86 int num_active_planes;
87 /* stack of active planes for crc computation, should be in z order */
88 struct vkms_plane_state **active_planes;
89 struct vkms_writeback_job *active_writeback;
90 struct vkms_color_lut gamma_lut;
92 /* below four are protected by vkms_output.composer_lock */
100 struct drm_crtc crtc;
101 struct drm_encoder encoder;
102 struct drm_connector connector;
103 struct drm_writeback_connector wb_connector;
104 struct hrtimer vblank_hrtimer;
106 struct drm_pending_vblank_event *event;
107 /* ordered wq for composer_work */
108 struct workqueue_struct *composer_workq;
109 /* protects concurrent access to composer */
111 /* guarantees that if the composer is enabled, a job will be queued */
112 struct mutex enabled_lock;
114 /* protected by @enabled_lock */
115 bool composer_enabled;
116 struct vkms_crtc_state *composer_state;
118 spinlock_t composer_lock;
127 /* only set when instantiated */
128 struct vkms_device *dev;
132 struct drm_device drm;
133 struct platform_device *platform;
134 struct vkms_output output;
135 const struct vkms_config *config;
138 #define drm_crtc_to_vkms_output(target) \
139 container_of(target, struct vkms_output, crtc)
141 #define drm_device_to_vkms_device(target) \
142 container_of(target, struct vkms_device, drm)
144 #define to_vkms_crtc_state(target)\
145 container_of(target, struct vkms_crtc_state, base)
147 #define to_vkms_plane_state(target)\
148 container_of(target, struct vkms_plane_state, base.base)
151 int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
152 struct drm_plane *primary, struct drm_plane *cursor);
154 int vkms_output_init(struct vkms_device *vkmsdev, int index);
156 struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,
157 enum drm_plane_type type, int index);
160 const char *const *vkms_get_crc_sources(struct drm_crtc *crtc,
162 int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name);
163 int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
166 /* Composer Support */
167 void vkms_composer_worker(struct work_struct *work);
168 void vkms_set_composer(struct vkms_output *out, bool enabled);
169 void vkms_compose_row(struct line_buffer *stage_buffer, struct vkms_plane_state *plane, int y);
170 void vkms_writeback_row(struct vkms_writeback_job *wb, const struct line_buffer *src_buffer, int y);
173 int vkms_enable_writeback_connector(struct vkms_device *vkmsdev);
175 #endif /* _VKMS_DRV_H_ */