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/*
* linux/drivers/video/omap2/dsscomp/base.c
*
* DSS Composition basic operation support
*
* Copyright (C) 2011 Texas Instruments, Inc
* Author: Lajos Molnar <molnar@ti.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 _DSSCOMP_H
#define _DSSCOMP_H
#include <linux/miscdevice.h>
#include <linux/debugfs.h>
#define MAX_OVERLAYS 5
#define MAX_MANAGERS 3
#define MAX_DISPLAYS 4
#define DEBUG_OVERLAYS (1 << 0)
#define DEBUG_COMPOSITIONS (1 << 1)
#define DEBUG_PHASES (1 << 2)
#define DEBUG_WAITS (1 << 3)
#define DEBUG_GRALLOC_PHASES (1 << 4)
/*
* Utility macros
*/
#define ZERO(c) memset(&c, 0, sizeof(c))
#define ZEROn(c, n) memset(c, 0, sizeof(*c) * n)
#define DEV(c) (c->dev.this_device)
/**
* DSS Composition Device Driver
*
* @dev: misc device base
* @dbgfs: debugfs hook
*/
struct dsscomp_dev {
struct miscdevice dev;
struct dentry *dbgfs;
/* cached DSS objects */
u32 num_ovls;
struct omap_overlay *ovls[MAX_OVERLAYS];
u32 num_mgrs;
struct omap_overlay_manager *mgrs[MAX_MANAGERS];
u32 num_displays;
struct omap_dss_device *displays[MAX_DISPLAYS];
};
extern int debug;
enum dsscomp_state {
DSSCOMP_STATE_ACTIVE = 0xAC54156E,
DSSCOMP_STATE_APPLYING = 0xB554C591,
DSSCOMP_STATE_APPLIED = 0xB60504C1,
DSSCOMP_STATE_PROGRAMMED = 0xC0520652,
DSSCOMP_STATE_DISPLAYED = 0xD15504CA,
};
struct dsscomp_data {
enum dsscomp_state state;
/*
* :TRICKY: before applying, overlays used in a composition are stored
* in ovl_mask and the other masks are empty. Once composition is
* applied, blank is set to see if all overlays are to be disabled on
* this composition, any disabled overlays in the composition are set in
* ovl_dmask, and ovl_mask is updated to include ALL overlays that are
* actually on the display - even if they are not part of the
* composition. The reason: we use ovl_mask to see if an overlay is used
* or planned to be used on a manager. We update ovl_mask when
* composition is programmed (removing the disabled overlays).
*/
bool blank; /* true if all overlays are to be disabled */
u32 ovl_mask; /* overlays used on this frame */
u32 ovl_dmask; /* overlays disabled on this frame */
u32 ix; /* manager index that this frame is on */
struct omapdss_ovl_cb cb;
struct dsscomp_setup_mgr_data frm;
struct dss2_ovl_info ovls[5];
void (*extra_cb)(void *data, int status);
void *extra_cb_data;
bool must_apply; /* whether composition must be applied */
};
struct dsscomp_sync_obj {
int state;
int fd;
atomic_t refs;
};
/*
* Kernel interface
*/
int dsscomp_queue_init(struct dsscomp_dev *cdev);
void dsscomp_queue_exit(void);
void dsscomp_gralloc_init(struct dsscomp_dev *cdev);
void dsscomp_gralloc_exit(void);
int dsscomp_gralloc_queue_ioctl(struct dsscomp_setup_mgr_data *d);
int dsscomp_wait(struct dsscomp_sync_obj *sync, enum dsscomp_wait_phase phase,
int timeout);
/* basic operation - if not using queues */
int set_dss_ovl_info(struct dss2_ovl_info *oi);
int set_dss_mgr_info(struct dss2_mgr_info *mi);
struct omap_overlay_manager *find_dss_mgr(int display_ix);
void swap_rb_in_ovl_info(struct dss2_ovl_info *oi);
void swap_rb_in_mgr_info(struct dss2_mgr_info *mi);
/*
* Debug functions
*/
void dump_ovl_info(struct dsscomp_dev *cdev, struct dss2_ovl_info *oi);
void dump_comp_info(struct dsscomp_dev *cdev, struct dsscomp_setup_mgr_data *d,
const char *phase);
#endif
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