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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*/
#ifndef __MSM_KMS_H__
#define __MSM_KMS_H__
#include <linux/clk.h>
#include <linux/regulator/consumer.h>
#include "msm_drv.h"
#define MAX_PLANE 4
/* As there are different display controller blocks depending on the
* snapdragon version, the kms support is split out and the appropriate
* implementation is loaded at runtime. The kms module is responsible
* for constructing the appropriate planes/crtcs/encoders/connectors.
*/
struct msm_kms_funcs {
/* hw initialization: */
int (*hw_init)(struct msm_kms *kms);
/* irq handling: */
void (*irq_preinstall)(struct msm_kms *kms);
int (*irq_postinstall)(struct msm_kms *kms);
void (*irq_uninstall)(struct msm_kms *kms);
irqreturn_t (*irq)(struct msm_kms *kms);
int (*enable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
void (*disable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
/*
* Atomic commit handling:
*/
/**
* Enable/disable power/clks needed for hw access done in other
* commit related methods.
*
* If mdp4 is migrated to runpm, we could probably drop these
* and use runpm directly.
*/
void (*enable_commit)(struct msm_kms *kms);
void (*disable_commit)(struct msm_kms *kms);
/**
* Prepare for atomic commit. This is called after any previous
* (async or otherwise) commit has completed.
*/
void (*prepare_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
/**
* Flush an atomic commit. This is called after the hardware
* updates have already been pushed down to effected planes/
* crtcs/encoders/connectors.
*/
void (*flush_commit)(struct msm_kms *kms, unsigned crtc_mask);
/* TODO remove ->commit(), use ->flush_commit() instead: */
void (*commit)(struct msm_kms *kms, struct drm_atomic_state *state);
/**
* Wait for any in-progress flush to complete on the specified
* crtcs. This should not block if there is no in-progress
* commit (ie. don't just wait for a vblank), as it will also
* be called before ->prepare_commit() to ensure any potential
* "async" commit has completed.
*/
void (*wait_flush)(struct msm_kms *kms, unsigned crtc_mask);
/**
* Clean up after commit is completed. This is called after
* ->wait_flush(), to give the backend a chance to do any
* post-commit cleanup.
*/
void (*complete_commit)(struct msm_kms *kms, unsigned crtc_mask);
/*
* Format handling:
*/
/* get msm_format w/ optional format modifiers from drm_mode_fb_cmd2 */
const struct msm_format *(*get_format)(struct msm_kms *kms,
const uint32_t format,
const uint64_t modifiers);
/* do format checking on format modified through fb_cmd2 modifiers */
int (*check_modified_format)(const struct msm_kms *kms,
const struct msm_format *msm_fmt,
const struct drm_mode_fb_cmd2 *cmd,
struct drm_gem_object **bos);
/* misc: */
long (*round_pixclk)(struct msm_kms *kms, unsigned long rate,
struct drm_encoder *encoder);
int (*set_split_display)(struct msm_kms *kms,
struct drm_encoder *encoder,
struct drm_encoder *slave_encoder,
bool is_cmd_mode);
void (*set_encoder_mode)(struct msm_kms *kms,
struct drm_encoder *encoder,
bool cmd_mode);
/* cleanup: */
void (*destroy)(struct msm_kms *kms);
#ifdef CONFIG_DEBUG_FS
/* debugfs: */
int (*debugfs_init)(struct msm_kms *kms, struct drm_minor *minor);
#endif
};
struct msm_kms {
const struct msm_kms_funcs *funcs;
/* irq number to be passed on to drm_irq_install */
int irq;
/* mapper-id used to request GEM buffer mapped for scanout: */
struct msm_gem_address_space *aspace;
};
static inline void msm_kms_init(struct msm_kms *kms,
const struct msm_kms_funcs *funcs)
{
kms->funcs = funcs;
}
struct msm_kms *mdp4_kms_init(struct drm_device *dev);
struct msm_kms *mdp5_kms_init(struct drm_device *dev);
struct msm_kms *dpu_kms_init(struct drm_device *dev);
struct msm_mdss_funcs {
int (*enable)(struct msm_mdss *mdss);
int (*disable)(struct msm_mdss *mdss);
void (*destroy)(struct drm_device *dev);
};
struct msm_mdss {
struct drm_device *dev;
const struct msm_mdss_funcs *funcs;
};
int mdp5_mdss_init(struct drm_device *dev);
int dpu_mdss_init(struct drm_device *dev);
#define for_each_crtc_mask(dev, crtc, crtc_mask) \
drm_for_each_crtc(crtc, dev) \
for_each_if (drm_crtc_mask(crtc) & (crtc_mask))
#endif /* __MSM_KMS_H__ */
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