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/* 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_crtc_helper.h>
#include <drm/drm_device.h>
#include <drm/drm_writeback.h>
#include <drm/drm_print.h>
#include <video/videomode.h>
#include <video/display_timing.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;
};
/**
* 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);
}
unsigned long komeda_calc_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);
struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev);
void komeda_kms_detach(struct komeda_kms_dev *kms);
#endif /*_KOMEDA_KMS_H_*/
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