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/*
* Copyright (c) 2016-2017, 2019, The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#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
/**
* Device Private DRM Mode Flags
* drm_mode->private_flags
*/
/* Connector has interpreted seamless transition request as dynamic fps */
#define MSM_MODE_FLAG_SEAMLESS_DYNAMIC_FPS (1<<0)
/* Transition to new mode requires a wait-for-vblank before the modeset */
#define MSM_MODE_FLAG_VBLANK_PRE_MODESET (1<<1)
/*
* We need setting some flags in bridge, and using them in encoder. Add them in
* private_flags would be better for use. DRM_MODE_FLAG_SUPPORTS_RGB/YUV are
* flags that indicating the SINK supported color formats read from EDID. While,
* these flags defined here indicate the best color/bit depth foramt we choosed
* that would be better for display. For example the best mode display like:
* RGB+RGB_DC,YUV+YUV_DC, RGB,YUV. And we could not set RGB and YUV format at
* the same time. And also RGB_DC only set when RGB format is set,the same for
* YUV_DC.
*/
/* Enable RGB444 30 bit deep color */
#define MSM_MODE_FLAG_RGB444_DC_ENABLE (1<<2)
/* Enable YUV420 30 bit deep color */
#define MSM_MODE_FLAG_YUV420_DC_ENABLE (1<<3)
/* Choose RGB444 format to display */
#define MSM_MODE_FLAG_COLOR_FORMAT_RGB444 (1<<4)
/* Choose YUV420 format to display */
#define MSM_MODE_FLAG_COLOR_FORMAT_YCBCR420 (1<<5)
/* 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);
int (*postinit)(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);
/* modeset, bracketing atomic_commit(): */
void (*prepare_fence)(struct msm_kms *kms,
struct drm_atomic_state *state);
void (*prepare_commit)(struct msm_kms *kms,
struct drm_atomic_state *state);
void (*commit)(struct msm_kms *kms, struct drm_atomic_state *state);
void (*complete_commit)(struct msm_kms *kms,
struct drm_atomic_state *state);
/* functions to wait for atomic commit completed on each CRTC */
void (*wait_for_crtc_commit_done)(struct msm_kms *kms,
struct drm_crtc *crtc);
/* 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,
const uint32_t modifiers_len);
/* 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 (*postopen)(struct msm_kms *kms, struct drm_file *file);
bool (*early_display_status)(struct msm_kms *kms);
/* cleanup: */
void (*preclose)(struct msm_kms *kms, struct drm_file *file);
void (*postclose)(struct msm_kms *kms, struct drm_file *file);
void (*lastclose)(struct msm_kms *kms);
void (*destroy)(struct msm_kms *kms);
};
struct msm_kms {
const struct msm_kms_funcs *funcs;
/* irq handling: */
bool in_irq;
struct list_head irq_list; /* list of mdp4_irq */
uint32_t vblank_mask; /* irq bits set for userspace vblank */
};
static inline void msm_kms_init(struct msm_kms *kms,
const struct msm_kms_funcs *funcs)
{
kms->funcs = funcs;
}
#ifdef CONFIG_DRM_MSM_MDP4
struct msm_kms *mdp4_kms_init(struct drm_device *dev);
#else
static inline
struct msm_kms *mdp4_kms_init(struct drm_device *dev) { return NULL; };
#endif
struct msm_kms *mdp5_kms_init(struct drm_device *dev);
struct msm_kms *sde_kms_init(struct drm_device *dev);
/**
* Mode Set Utility Functions
*/
static inline bool msm_is_mode_seamless(const struct drm_display_mode *mode)
{
return (mode->flags & DRM_MODE_FLAG_SEAMLESS);
}
static inline bool msm_is_mode_dynamic_fps(const struct drm_display_mode *mode)
{
return ((mode->flags & DRM_MODE_FLAG_SEAMLESS) &&
(mode->private_flags & MSM_MODE_FLAG_SEAMLESS_DYNAMIC_FPS));
}
static inline bool msm_needs_vblank_pre_modeset(
const struct drm_display_mode *mode)
{
return (mode->private_flags & MSM_MODE_FLAG_VBLANK_PRE_MODESET);
}
#endif /* __MSM_KMS_H__ */
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