173 lines · c
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 1016#define YRES_MIN 1017 18#define XRES_DEF 102419#define YRES_DEF 76820 21#define XRES_MAX 819222#define YRES_MAX 819223 24#define NUM_OVERLAY_PLANES 825 26#define VKMS_LUT_SIZE 25627 28struct 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;34 unsigned int offset;35 unsigned int pitch;36 unsigned int cpp;37};38 39struct pixel_argb_u16 {40 u16 a, r, g, b;41};42 43struct line_buffer {44 size_t n_pixels;45 struct pixel_argb_u16 *pixels;46};47 48struct 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);52};53 54/**55 * vkms_plane_state - Driver specific plane state56 * @base: base plane state57 * @frame_info: data required for composing computation58 */59struct 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);63};64 65struct vkms_plane {66 struct drm_plane base;67};68 69struct vkms_color_lut {70 struct drm_color_lut *base;71 size_t lut_length;72 s64 channel_value2index_ratio;73};74 75/**76 * vkms_crtc_state - Driver specific CRTC state77 * @base: base CRTC state78 * @composer_work: work struct to compose and add CRC entries79 * @n_frame_start: start frame number for computed CRC80 * @n_frame_end: end frame number for computed CRC81 */82struct vkms_crtc_state {83 struct drm_crtc_state base;84 struct work_struct composer_work;85 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;91 92 /* below four are protected by vkms_output.composer_lock */93 bool crc_pending;94 bool wb_pending;95 u64 frame_start;96 u64 frame_end;97};98 99struct vkms_output {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;105 ktime_t period_ns;106 /* ordered wq for composer_work */107 struct workqueue_struct *composer_workq;108 /* protects concurrent access to composer */109 spinlock_t lock;110 111 /* protected by @lock */112 bool composer_enabled;113 struct vkms_crtc_state *composer_state;114 115 spinlock_t composer_lock;116};117 118struct vkms_device;119 120struct vkms_config {121 bool writeback;122 bool cursor;123 bool overlay;124 /* only set when instantiated */125 struct vkms_device *dev;126};127 128struct vkms_device {129 struct drm_device drm;130 struct platform_device *platform;131 struct vkms_output output;132 const struct vkms_config *config;133};134 135#define drm_crtc_to_vkms_output(target) \136 container_of(target, struct vkms_output, crtc)137 138#define drm_device_to_vkms_device(target) \139 container_of(target, struct vkms_device, drm)140 141#define to_vkms_crtc_state(target)\142 container_of(target, struct vkms_crtc_state, base)143 144#define to_vkms_plane_state(target)\145 container_of(target, struct vkms_plane_state, base.base)146 147/* CRTC */148int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,149 struct drm_plane *primary, struct drm_plane *cursor);150 151int vkms_output_init(struct vkms_device *vkmsdev, int index);152 153struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,154 enum drm_plane_type type, int index);155 156/* CRC Support */157const char *const *vkms_get_crc_sources(struct drm_crtc *crtc,158 size_t *count);159int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name);160int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name,161 size_t *values_cnt);162 163/* Composer Support */164void vkms_composer_worker(struct work_struct *work);165void vkms_set_composer(struct vkms_output *out, bool enabled);166void vkms_compose_row(struct line_buffer *stage_buffer, struct vkms_plane_state *plane, int y);167void vkms_writeback_row(struct vkms_writeback_job *wb, const struct line_buffer *src_buffer, int y);168 169/* Writeback */170int vkms_enable_writeback_connector(struct vkms_device *vkmsdev);171 172#endif /* _VKMS_DRV_H_ */173