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/*
* include/linux/omap_ion.h
*
* Copyright (C) 2011 Google, Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
*/
#ifndef _LINUX_OMAP_ION_H
#define _LINUX_OMAP_ION_H
#include <linux/types.h>
/**
* struct omap_ion_tiler_alloc_data - metadata passed from userspace for allocations
* @w: width of the allocation
* @h: height of the allocation
* @fmt: format of the data (8, 16, 32bit or page)
* @flags: flags passed to heap
* @stride: stride of the allocation, returned to caller from kernel
* @handle: pointer that will be populated with a cookie to use to refer
* to this allocation
*
* Provided by userspace as an argument to the ioctl
*/
struct omap_ion_tiler_alloc_data {
size_t w;
size_t h;
int fmt;
unsigned int flags;
struct ion_handle *handle;
size_t stride;
size_t offset;
};
#ifdef __KERNEL__
int omap_ion_tiler_alloc(struct ion_client *client,
struct omap_ion_tiler_alloc_data *data);
int omap_ion_nonsecure_tiler_alloc(struct ion_client *client,
struct omap_ion_tiler_alloc_data *data);
/* given a handle in the tiler, return a list of tiler pages that back it */
int omap_tiler_pages(struct ion_client *client, struct ion_handle *handle,
int *n, u32 ** tiler_pages);
#endif /* __KERNEL__ */
/* additional heaps used only on omap */
enum {
OMAP_ION_HEAP_TYPE_TILER = ION_HEAP_TYPE_CUSTOM + 1,
};
#define OMAP_ION_HEAP_TILER_MASK (1 << OMAP_ION_HEAP_TYPE_TILER)
enum {
OMAP_ION_TILER_ALLOC,
};
/**
* These should match the defines in the tiler driver
*/
enum {
TILER_PIXEL_FMT_MIN = 0,
TILER_PIXEL_FMT_8BIT = 0,
TILER_PIXEL_FMT_16BIT = 1,
TILER_PIXEL_FMT_32BIT = 2,
TILER_PIXEL_FMT_PAGE = 3,
TILER_PIXEL_FMT_MAX = 3
};
/**
* List of heaps in the system
*/
enum {
OMAP_ION_HEAP_LARGE_SURFACES,
OMAP_ION_HEAP_TILER,
OMAP_ION_HEAP_SECURE_INPUT,
OMAP_ION_HEAP_NONSECURE_TILER,
};
#endif /* _LINUX_ION_H */
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