diff options
Diffstat (limited to 'drivers/gpu/drm/vkms/vkms_drv.h')
| -rw-r--r-- | drivers/gpu/drm/vkms/vkms_drv.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h new file mode 100644 index 000000000..8f5710deb --- /dev/null +++ b/drivers/gpu/drm/vkms/vkms_drv.h @@ -0,0 +1,173 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +#ifndef _VKMS_DRV_H_ +#define _VKMS_DRV_H_ + +#include <linux/hrtimer.h> + +#include <drm/drm.h> +#include <drm/drm_framebuffer.h> +#include <drm/drm_gem.h> +#include <drm/drm_gem_atomic_helper.h> +#include <drm/drm_encoder.h> +#include <drm/drm_writeback.h> + +#define XRES_MIN 10 +#define YRES_MIN 10 + +#define XRES_DEF 1024 +#define YRES_DEF 768 + +#define XRES_MAX 8192 +#define YRES_MAX 8192 + +#define NUM_OVERLAY_PLANES 8 + +#define VKMS_LUT_SIZE 256 + +struct vkms_frame_info { + struct drm_framebuffer *fb; + struct drm_rect src, dst; + struct drm_rect rotated; + struct iosys_map map[DRM_FORMAT_MAX_PLANES]; + unsigned int rotation; + unsigned int offset; + unsigned int pitch; + unsigned int cpp; +}; + +struct pixel_argb_u16 { + u16 a, r, g, b; +}; + +struct line_buffer { + size_t n_pixels; + struct pixel_argb_u16 *pixels; +}; + +struct vkms_writeback_job { + struct iosys_map data[DRM_FORMAT_MAX_PLANES]; + struct vkms_frame_info wb_frame_info; + void (*pixel_write)(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel); +}; + +/** + * vkms_plane_state - Driver specific plane state + * @base: base plane state + * @frame_info: data required for composing computation + */ +struct vkms_plane_state { + struct drm_shadow_plane_state base; + struct vkms_frame_info *frame_info; + void (*pixel_read)(u8 *src_buffer, struct pixel_argb_u16 *out_pixel); +}; + +struct vkms_plane { + struct drm_plane base; +}; + +struct vkms_color_lut { + struct drm_color_lut *base; + size_t lut_length; + s64 channel_value2index_ratio; +}; + +/** + * vkms_crtc_state - Driver specific CRTC state + * @base: base CRTC state + * @composer_work: work struct to compose and add CRC entries + * @n_frame_start: start frame number for computed CRC + * @n_frame_end: end frame number for computed CRC + */ +struct vkms_crtc_state { + struct drm_crtc_state base; + struct work_struct composer_work; + + int num_active_planes; + /* stack of active planes for crc computation, should be in z order */ + struct vkms_plane_state **active_planes; + struct vkms_writeback_job *active_writeback; + struct vkms_color_lut gamma_lut; + + /* below four are protected by vkms_output.composer_lock */ + bool crc_pending; + bool wb_pending; + u64 frame_start; + u64 frame_end; +}; + +struct vkms_output { + struct drm_crtc crtc; + struct drm_encoder encoder; + struct drm_connector connector; + struct drm_writeback_connector wb_connector; + struct hrtimer vblank_hrtimer; + ktime_t period_ns; + struct drm_pending_vblank_event *event; + /* ordered wq for composer_work */ + struct workqueue_struct *composer_workq; + /* protects concurrent access to composer */ + spinlock_t lock; + + /* protected by @lock */ + bool composer_enabled; + struct vkms_crtc_state *composer_state; + + spinlock_t composer_lock; +}; + +struct vkms_device; + +struct vkms_config { + bool writeback; + bool cursor; + bool overlay; + /* only set when instantiated */ + struct vkms_device *dev; +}; + +struct vkms_device { + struct drm_device drm; + struct platform_device *platform; + struct vkms_output output; + const struct vkms_config *config; +}; + +#define drm_crtc_to_vkms_output(target) \ + container_of(target, struct vkms_output, crtc) + +#define drm_device_to_vkms_device(target) \ + container_of(target, struct vkms_device, drm) + +#define to_vkms_crtc_state(target)\ + container_of(target, struct vkms_crtc_state, base) + +#define to_vkms_plane_state(target)\ + container_of(target, struct vkms_plane_state, base.base) + +/* CRTC */ +int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, + struct drm_plane *primary, struct drm_plane *cursor); + +int vkms_output_init(struct vkms_device *vkmsdev, int index); + +struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, + enum drm_plane_type type, int index); + +/* CRC Support */ +const char *const *vkms_get_crc_sources(struct drm_crtc *crtc, + size_t *count); +int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name); +int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name, + size_t *values_cnt); + +/* Composer Support */ +void vkms_composer_worker(struct work_struct *work); +void vkms_set_composer(struct vkms_output *out, bool enabled); +void vkms_compose_row(struct line_buffer *stage_buffer, struct vkms_plane_state *plane, int y); +void vkms_writeback_row(struct vkms_writeback_job *wb, const struct line_buffer *src_buffer, int y); + +/* Writeback */ +int vkms_enable_writeback_connector(struct vkms_device *vkmsdev); + +#endif /* _VKMS_DRV_H_ */ |