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linux_dsm_epyc7002/drivers/gpu/drm/exynos/exynos_drm_drv.h
Marek Szyprowski d29c2c1407 drm/exynos: crtc: rework atomic_{begin,flush} 
Some CRTC drivers (like Exynos DRM Mixer) can handle blocking register
updates only on per-device level, not per-plane level. This patch changes
exynos_crts atomic_begin/atomic_flush callbacks to handle the entire crtc,
instead of given planes, so driver can handle both cases on their own.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2016-01-13 00:16:37 +09:00

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/* exynos_drm_drv.h
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* Authors:
* Inki Dae <inki.dae@samsung.com>
* Joonyoung Shim <jy0922.shim@samsung.com>
* Seung-Woo Kim <sw0312.kim@samsung.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef _EXYNOS_DRM_DRV_H_
#define _EXYNOS_DRM_DRV_H_
#include <drm/drmP.h>
#include <linux/module.h>
#define MAX_CRTC 3
#define MAX_PLANE 5
#define MAX_FB_BUFFER 4
#define DEFAULT_WIN 0
#define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc, base)
#define to_exynos_plane(x) container_of(x, struct exynos_drm_plane, base)
/* this enumerates display type. */
enum exynos_drm_output_type {
EXYNOS_DISPLAY_TYPE_NONE,
/* RGB or CPU Interface. */
EXYNOS_DISPLAY_TYPE_LCD,
/* HDMI Interface. */
EXYNOS_DISPLAY_TYPE_HDMI,
/* Virtual Display Interface. */
EXYNOS_DISPLAY_TYPE_VIDI,
};
struct exynos_drm_rect {
unsigned int x, y;
unsigned int w, h;
};
/*
* Exynos drm plane state structure.
*
* @base: plane_state object (contains drm_framebuffer pointer)
* @src: rectangle of the source image data to be displayed (clipped to
* visible part).
* @crtc: rectangle of the target image position on hardware screen
* (clipped to visible part).
* @h_ratio: horizontal scaling ratio, 16.16 fixed point
* @v_ratio: vertical scaling ratio, 16.16 fixed point
*
* this structure consists plane state data that will be applied to hardware
* specific overlay info.
*/
struct exynos_drm_plane_state {
struct drm_plane_state base;
struct exynos_drm_rect crtc;
struct exynos_drm_rect src;
unsigned int h_ratio;
unsigned int v_ratio;
unsigned int zpos;
};
static inline struct exynos_drm_plane_state *
to_exynos_plane_state(struct drm_plane_state *state)
{
return container_of(state, struct exynos_drm_plane_state, base);
}
/*
* Exynos drm common overlay structure.
*
* @base: plane object
* @index: hardware index of the overlay layer
*
* this structure is common to exynos SoC and its contents would be copied
* to hardware specific overlay info.
*/
struct exynos_drm_plane {
struct drm_plane base;
const struct exynos_drm_plane_config *config;
unsigned int index;
struct drm_framebuffer *pending_fb;
};
#define EXYNOS_DRM_PLANE_CAP_DOUBLE (1 << 0)
#define EXYNOS_DRM_PLANE_CAP_SCALE (1 << 1)
#define EXYNOS_DRM_PLANE_CAP_ZPOS (1 << 2)
/*
* Exynos DRM plane configuration structure.
*
* @zpos: initial z-position of the plane.
* @type: type of the plane (primary, cursor or overlay).
* @pixel_formats: supported pixel formats.
* @num_pixel_formats: number of elements in 'pixel_formats'.
* @capabilities: supported features (see EXYNOS_DRM_PLANE_CAP_*)
*/
struct exynos_drm_plane_config {
unsigned int zpos;
enum drm_plane_type type;
const uint32_t *pixel_formats;
unsigned int num_pixel_formats;
unsigned int capabilities;
};
/*
* Exynos drm crtc ops
*
* @enable: enable the device
* @disable: disable the device
* @commit: set current hw specific display mode to hw.
* @enable_vblank: specific driver callback for enabling vblank interrupt.
* @disable_vblank: specific driver callback for disabling vblank interrupt.
* @wait_for_vblank: wait for vblank interrupt to make sure that
* hardware overlay is updated.
* @atomic_check: validate state
* @atomic_begin: prepare device to receive an update
* @atomic_flush: mark the end of device update
* @update_plane: apply hardware specific overlay data to registers.
* @disable_plane: disable hardware specific overlay.
* @te_handler: trigger to transfer video image at the tearing effect
* synchronization signal if there is a page flip request.
* @clock_enable: optional function enabling/disabling display domain clock,
* called from exynos-dp driver before powering up (with
* 'enable' argument as true) and after powering down (with
* 'enable' as false).
*/
struct exynos_drm_crtc;
struct exynos_drm_crtc_ops {
void (*enable)(struct exynos_drm_crtc *crtc);
void (*disable)(struct exynos_drm_crtc *crtc);
void (*commit)(struct exynos_drm_crtc *crtc);
int (*enable_vblank)(struct exynos_drm_crtc *crtc);
void (*disable_vblank)(struct exynos_drm_crtc *crtc);
void (*wait_for_vblank)(struct exynos_drm_crtc *crtc);
int (*atomic_check)(struct exynos_drm_crtc *crtc,
struct drm_crtc_state *state);
void (*atomic_begin)(struct exynos_drm_crtc *crtc);
void (*update_plane)(struct exynos_drm_crtc *crtc,
struct exynos_drm_plane *plane);
void (*disable_plane)(struct exynos_drm_crtc *crtc,
struct exynos_drm_plane *plane);
void (*atomic_flush)(struct exynos_drm_crtc *crtc);
void (*te_handler)(struct exynos_drm_crtc *crtc);
void (*clock_enable)(struct exynos_drm_crtc *crtc, bool enable);
};
/*
* Exynos specific crtc structure.
*
* @base: crtc object.
* @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
* @pipe: a crtc index created at load() with a new crtc object creation
* and the crtc object would be set to private->crtc array
* to get a crtc object corresponding to this pipe from private->crtc
* array when irq interrupt occurred. the reason of using this pipe is that
* drm framework doesn't support multiple irq yet.
* we can refer to the crtc to current hardware interrupt occurred through
* this pipe value.
* @enabled: if the crtc is enabled or not
* @event: vblank event that is currently queued for flip
* @wait_update: wait all pending planes updates to finish
* @pending_update: number of pending plane updates in this crtc
* @ops: pointer to callbacks for exynos drm specific functionality
* @ctx: A pointer to the crtc's implementation specific context
*/
struct exynos_drm_crtc {
struct drm_crtc base;
enum exynos_drm_output_type type;
unsigned int pipe;
struct drm_pending_vblank_event *event;
wait_queue_head_t wait_update;
atomic_t pending_update;
const struct exynos_drm_crtc_ops *ops;
void *ctx;
};
struct exynos_drm_g2d_private {
struct device *dev;
struct list_head inuse_cmdlist;
struct list_head event_list;
struct list_head userptr_list;
};
struct drm_exynos_file_private {
struct exynos_drm_g2d_private *g2d_priv;
struct device *ipp_dev;
};
/*
* Exynos drm private structure.
*
* @da_start: start address to device address space.
* with iommu, device address space starts from this address
* otherwise default one.
* @da_space_size: size of device address space.
* if 0 then default value is used for it.
* @pipe: the pipe number for this crtc/manager.
* @pending: the crtcs that have pending updates to finish
* @lock: protect access to @pending
* @wait: wait an atomic commit to finish
*/
struct exynos_drm_private {
struct drm_fb_helper *fb_helper;
/*
* created crtc object would be contained at this array and
* this array is used to be aware of which crtc did it request vblank.
*/
struct drm_crtc *crtc[MAX_CRTC];
struct drm_property *plane_zpos_property;
unsigned long da_start;
unsigned long da_space_size;
unsigned int pipe;
/* for atomic commit */
u32 pending;
spinlock_t lock;
wait_queue_head_t wait;
};
/*
* Exynos drm sub driver structure.
*
* @list: sub driver has its own list object to register to exynos drm driver.
* @dev: pointer to device object for subdrv device driver.
* @drm_dev: pointer to drm_device and this pointer would be set
* when sub driver calls exynos_drm_subdrv_register().
* @probe: this callback would be called by exynos drm driver after
* subdrv is registered to it.
* @remove: this callback is used to release resources created
* by probe callback.
* @open: this would be called with drm device file open.
* @close: this would be called with drm device file close.
*/
struct exynos_drm_subdrv {
struct list_head list;
struct device *dev;
struct drm_device *drm_dev;
int (*probe)(struct drm_device *drm_dev, struct device *dev);
void (*remove)(struct drm_device *drm_dev, struct device *dev);
int (*open)(struct drm_device *drm_dev, struct device *dev,
struct drm_file *file);
void (*close)(struct drm_device *drm_dev, struct device *dev,
struct drm_file *file);
};
/* This function would be called by non kms drivers such as g2d and ipp. */
int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
/* this function removes subdrv list from exynos drm driver */
int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
int exynos_drm_device_subdrv_probe(struct drm_device *dev);
int exynos_drm_device_subdrv_remove(struct drm_device *dev);
int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
#ifdef CONFIG_DRM_EXYNOS_DPI
struct drm_encoder *exynos_dpi_probe(struct device *dev);
int exynos_dpi_remove(struct drm_encoder *encoder);
int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder);
#else
static inline struct drm_encoder *
exynos_dpi_probe(struct device *dev) { return NULL; }
static inline int exynos_dpi_remove(struct drm_encoder *encoder)
{
return 0;
}
static inline int exynos_dpi_bind(struct drm_device *dev,
struct drm_encoder *encoder)
{
return 0;
}
#endif
int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
bool async);
extern struct platform_driver fimd_driver;
extern struct platform_driver exynos5433_decon_driver;
extern struct platform_driver decon_driver;
extern struct platform_driver dp_driver;
extern struct platform_driver dsi_driver;
extern struct platform_driver mixer_driver;
extern struct platform_driver hdmi_driver;
extern struct platform_driver exynos_drm_common_hdmi_driver;
extern struct platform_driver vidi_driver;
extern struct platform_driver g2d_driver;
extern struct platform_driver fimc_driver;
extern struct platform_driver rotator_driver;
extern struct platform_driver gsc_driver;
extern struct platform_driver ipp_driver;
extern struct platform_driver mic_driver;
#endif
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