diff options
Diffstat (limited to 'drivers/gpu/drm/sysfb/drm_sysfb_helper.h')
| -rw-r--r-- | drivers/gpu/drm/sysfb/drm_sysfb_helper.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sysfb/drm_sysfb_helper.h b/drivers/gpu/drm/sysfb/drm_sysfb_helper.h new file mode 100644 index 000000000000..cb08a88242cc --- /dev/null +++ b/drivers/gpu/drm/sysfb/drm_sysfb_helper.h @@ -0,0 +1,184 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef DRM_SYSFB_HELPER_H +#define DRM_SYSFB_HELPER_H + +#include <linux/container_of.h> +#include <linux/iosys-map.h> + +#include <video/pixel_format.h> + +#include <drm/drm_crtc.h> +#include <drm/drm_device.h> +#include <drm/drm_modes.h> + +struct drm_format_info; +struct drm_scanout_buffer; +struct screen_info; + +/* + * Input parsing + */ + +struct drm_sysfb_format { + struct pixel_format pixel; + u32 fourcc; +}; + +int drm_sysfb_get_validated_int(struct drm_device *dev, const char *name, + u64 value, u32 max); +int drm_sysfb_get_validated_int0(struct drm_device *dev, const char *name, + u64 value, u32 max); + +#if defined(CONFIG_SCREEN_INFO) +int drm_sysfb_get_width_si(struct drm_device *dev, const struct screen_info *si); +int drm_sysfb_get_height_si(struct drm_device *dev, const struct screen_info *si); +struct resource *drm_sysfb_get_memory_si(struct drm_device *dev, + const struct screen_info *si, + struct resource *res); +int drm_sysfb_get_stride_si(struct drm_device *dev, const struct screen_info *si, + const struct drm_format_info *format, + unsigned int width, unsigned int height, u64 size); +u64 drm_sysfb_get_visible_size_si(struct drm_device *dev, const struct screen_info *si, + unsigned int height, unsigned int stride, u64 size); +const struct drm_format_info *drm_sysfb_get_format_si(struct drm_device *dev, + const struct drm_sysfb_format *formats, + size_t nformats, + const struct screen_info *si); +#endif + +/* + * Input parsing + */ + +int drm_sysfb_get_validated_int(struct drm_device *dev, const char *name, + u64 value, u32 max); +int drm_sysfb_get_validated_int0(struct drm_device *dev, const char *name, + u64 value, u32 max); + +/* + * Display modes + */ + +struct drm_display_mode drm_sysfb_mode(unsigned int width, + unsigned int height, + unsigned int width_mm, + unsigned int height_mm); + +/* + * Device + */ + +struct drm_sysfb_device { + struct drm_device dev; + + const u8 *edid; /* can be NULL */ + + /* hardware settings */ + struct drm_display_mode fb_mode; + const struct drm_format_info *fb_format; + unsigned int fb_pitch; + unsigned int fb_gamma_lut_size; + + /* hardware-framebuffer kernel address */ + struct iosys_map fb_addr; +}; + +static inline struct drm_sysfb_device *to_drm_sysfb_device(struct drm_device *dev) +{ + return container_of(dev, struct drm_sysfb_device, dev); +} + +/* + * Plane + */ + +int drm_sysfb_plane_helper_atomic_check(struct drm_plane *plane, + struct drm_atomic_state *new_state); +void drm_sysfb_plane_helper_atomic_update(struct drm_plane *plane, + struct drm_atomic_state *state); +void drm_sysfb_plane_helper_atomic_disable(struct drm_plane *plane, + struct drm_atomic_state *state); +int drm_sysfb_plane_helper_get_scanout_buffer(struct drm_plane *plane, + struct drm_scanout_buffer *sb); + +#define DRM_SYSFB_PLANE_NFORMATS(_num_native) \ + ((_num_native) + 1) + +#define DRM_SYSFB_PLANE_FORMAT_MODIFIERS \ + DRM_FORMAT_MOD_LINEAR, \ + DRM_FORMAT_MOD_INVALID + +#define DRM_SYSFB_PLANE_HELPER_FUNCS \ + DRM_GEM_SHADOW_PLANE_HELPER_FUNCS, \ + .atomic_check = drm_sysfb_plane_helper_atomic_check, \ + .atomic_update = drm_sysfb_plane_helper_atomic_update, \ + .atomic_disable = drm_sysfb_plane_helper_atomic_disable, \ + .get_scanout_buffer = drm_sysfb_plane_helper_get_scanout_buffer + +#define DRM_SYSFB_PLANE_FUNCS \ + .update_plane = drm_atomic_helper_update_plane, \ + .disable_plane = drm_atomic_helper_disable_plane, \ + DRM_GEM_SHADOW_PLANE_FUNCS + +/* + * CRTC + */ + +struct drm_sysfb_crtc_state { + struct drm_crtc_state base; + + /* Primary-plane format; required for color mgmt. */ + const struct drm_format_info *format; +}; + +static inline struct drm_sysfb_crtc_state * +to_drm_sysfb_crtc_state(struct drm_crtc_state *base) +{ + return container_of(base, struct drm_sysfb_crtc_state, base); +} + +enum drm_mode_status drm_sysfb_crtc_helper_mode_valid(struct drm_crtc *crtc, + const struct drm_display_mode *mode); +int drm_sysfb_crtc_helper_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *new_state); + +#define DRM_SYSFB_CRTC_HELPER_FUNCS \ + .mode_valid = drm_sysfb_crtc_helper_mode_valid, \ + .atomic_check = drm_sysfb_crtc_helper_atomic_check + +void drm_sysfb_crtc_reset(struct drm_crtc *crtc); +struct drm_crtc_state *drm_sysfb_crtc_atomic_duplicate_state(struct drm_crtc *crtc); +void drm_sysfb_crtc_atomic_destroy_state(struct drm_crtc *crtc, struct drm_crtc_state *crtc_state); + +#define DRM_SYSFB_CRTC_FUNCS \ + .reset = drm_sysfb_crtc_reset, \ + .set_config = drm_atomic_helper_set_config, \ + .page_flip = drm_atomic_helper_page_flip, \ + .atomic_duplicate_state = drm_sysfb_crtc_atomic_duplicate_state, \ + .atomic_destroy_state = drm_sysfb_crtc_atomic_destroy_state + +/* + * Connector + */ + +int drm_sysfb_connector_helper_get_modes(struct drm_connector *connector); + +#define DRM_SYSFB_CONNECTOR_HELPER_FUNCS \ + .get_modes = drm_sysfb_connector_helper_get_modes + +#define DRM_SYSFB_CONNECTOR_FUNCS \ + .reset = drm_atomic_helper_connector_reset, \ + .fill_modes = drm_helper_probe_single_connector_modes, \ + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, \ + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state + +/* + * Mode config + */ + +#define DRM_SYSFB_MODE_CONFIG_FUNCS \ + .fb_create = drm_gem_fb_create_with_dirty, \ + .atomic_check = drm_atomic_helper_check, \ + .atomic_commit = drm_atomic_helper_commit + +#endif |