diff options
Diffstat (limited to 'drivers/gpu/drm/arm/display/komeda/komeda_kms.h')
| -rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_kms.h | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.h b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h new file mode 100644 index 000000000..6ef655326 --- /dev/null +++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h @@ -0,0 +1,194 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * (C) COPYRIGHT 2018 ARM Limited. All rights reserved. + * Author: James.Qian.Wang <james.qian.wang@arm.com> + * + */ +#ifndef _KOMEDA_KMS_H_ +#define _KOMEDA_KMS_H_ + +#include <linux/list.h> +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_blend.h> +#include <drm/drm_device.h> +#include <drm/drm_writeback.h> +#include <drm/drm_print.h> + +/** + * struct komeda_plane - komeda instance of drm_plane + */ +struct komeda_plane { + /** @base: &drm_plane */ + struct drm_plane base; + /** + * @layer: + * + * represents available layer input pipelines for this plane. + * + * NOTE: + * the layer is not for a specific Layer, but indicate a group of + * Layers with same capabilities. + */ + struct komeda_layer *layer; +}; + +/** + * struct komeda_plane_state + * + * The plane_state can be split into two data flow (left/right) and handled + * by two layers &komeda_plane.layer and &komeda_plane.layer.right + */ +struct komeda_plane_state { + /** @base: &drm_plane_state */ + struct drm_plane_state base; + /** @zlist_node: zorder list node */ + struct list_head zlist_node; + + /** @layer_split: on/off layer_split */ + u8 layer_split : 1; +}; + +/** + * struct komeda_wb_connector + */ +struct komeda_wb_connector { + /** @base: &drm_writeback_connector */ + struct drm_writeback_connector base; + + /** @wb_layer: represents associated writeback pipeline of komeda */ + struct komeda_layer *wb_layer; +}; + +/** + * struct komeda_crtc + */ +struct komeda_crtc { + /** @base: &drm_crtc */ + struct drm_crtc base; + /** @master: only master has display output */ + struct komeda_pipeline *master; + /** + * @slave: optional + * + * Doesn't have its own display output, the handled data flow will + * merge into the master. + */ + struct komeda_pipeline *slave; + + /** @slave_planes: komeda slave planes mask */ + u32 slave_planes; + + /** @wb_conn: komeda write back connector */ + struct komeda_wb_connector *wb_conn; + + /** @disable_done: this flip_done is for tracing the disable */ + struct completion *disable_done; + + /** @encoder: encoder at the end of the pipeline */ + struct drm_encoder encoder; +}; + +/** + * struct komeda_crtc_state + */ +struct komeda_crtc_state { + /** @base: &drm_crtc_state */ + struct drm_crtc_state base; + + /* private properties */ + + /* computed state which are used by validate/check */ + /** + * @affected_pipes: + * the affected pipelines in once display instance + */ + u32 affected_pipes; + /** + * @active_pipes: + * the active pipelines in once display instance + */ + u32 active_pipes; + + /** @clock_ratio: ratio of (aclk << 32)/pxlclk */ + u64 clock_ratio; + + /** @max_slave_zorder: the maximum of slave zorder */ + u32 max_slave_zorder; +}; + +/** struct komeda_kms_dev - for gather KMS related things */ +struct komeda_kms_dev { + /** @base: &drm_device */ + struct drm_device base; + + /** @n_crtcs: valid numbers of crtcs in &komeda_kms_dev.crtcs */ + int n_crtcs; + /** @crtcs: crtcs list */ + struct komeda_crtc crtcs[KOMEDA_MAX_PIPELINES]; +}; + +#define to_kplane(p) container_of(p, struct komeda_plane, base) +#define to_kplane_st(p) container_of(p, struct komeda_plane_state, base) +#define to_kconn(p) container_of(p, struct komeda_wb_connector, base) +#define to_kcrtc(p) container_of(p, struct komeda_crtc, base) +#define to_kcrtc_st(p) container_of(p, struct komeda_crtc_state, base) +#define to_kdev(p) container_of(p, struct komeda_kms_dev, base) +#define to_wb_conn(x) container_of(x, struct drm_writeback_connector, base) + +static inline bool is_writeback_only(struct drm_crtc_state *st) +{ + struct komeda_wb_connector *wb_conn = to_kcrtc(st->crtc)->wb_conn; + struct drm_connector *conn = wb_conn ? &wb_conn->base.base : NULL; + + return conn && (st->connector_mask == BIT(drm_connector_index(conn))); +} + +static inline bool +is_only_changed_connector(struct drm_crtc_state *st, struct drm_connector *conn) +{ + struct drm_crtc_state *old_st; + u32 changed_connectors; + + old_st = drm_atomic_get_old_crtc_state(st->state, st->crtc); + changed_connectors = st->connector_mask ^ old_st->connector_mask; + + return BIT(drm_connector_index(conn)) == changed_connectors; +} + +static inline bool has_flip_h(u32 rot) +{ + u32 rotation = drm_rotation_simplify(rot, + DRM_MODE_ROTATE_0 | + DRM_MODE_ROTATE_90 | + DRM_MODE_REFLECT_MASK); + + if (rotation & DRM_MODE_ROTATE_90) + return !!(rotation & DRM_MODE_REFLECT_Y); + else + return !!(rotation & DRM_MODE_REFLECT_X); +} + +void komeda_crtc_get_color_config(struct drm_crtc_state *crtc_st, + u32 *color_depths, u32 *color_formats); +unsigned long komeda_crtc_get_aclk(struct komeda_crtc_state *kcrtc_st); + +int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev); + +int komeda_kms_add_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev); +int komeda_kms_add_planes(struct komeda_kms_dev *kms, struct komeda_dev *mdev); +int komeda_kms_add_private_objs(struct komeda_kms_dev *kms, + struct komeda_dev *mdev); +int komeda_kms_add_wb_connectors(struct komeda_kms_dev *kms, + struct komeda_dev *mdev); +void komeda_kms_cleanup_private_objs(struct komeda_kms_dev *kms); + +void komeda_crtc_handle_event(struct komeda_crtc *kcrtc, + struct komeda_events *evts); +void komeda_crtc_flush_and_wait_for_flip_done(struct komeda_crtc *kcrtc, + struct completion *input_flip_done); + +struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev); +void komeda_kms_detach(struct komeda_kms_dev *kms); + +#endif /*_KOMEDA_KMS_H_*/ |