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/*
* drivers/video/tegra/host/nvhost_cpuaccess.h
*
* Tegra Graphics Host Cpu Register Access
*
* Copyright (c) 2010, NVIDIA Corporation.
*
* 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.
*
* 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __NVHOST_CPUACCESS_H
#define __NVHOST_CPUACCESS_H
#include "nvhost_hardware.h"
#include <linux/platform_device.h>
#include <linux/io.h>
enum nvhost_module_id {
NVHOST_MODULE_DISPLAY_A = 0,
NVHOST_MODULE_DISPLAY_B,
NVHOST_MODULE_VI,
NVHOST_MODULE_ISP,
NVHOST_MODULE_MPE,
#if 0
/* TODO: [ahatala 2010-07-02] find out if these are needed */
NVHOST_MODULE_FUSE,
NVHOST_MODULE_APB_MISC,
NVHOST_MODULE_CLK_RESET,
#endif
NVHOST_MODULE_NUM
};
struct nvhost_cpuaccess {
struct resource *reg_mem[NVHOST_MODULE_NUM];
void __iomem *regs[NVHOST_MODULE_NUM];
atomic_t lock_counts[NV_HOST1X_SYNC_MLOCK_NUM];
};
int nvhost_cpuaccess_init(struct nvhost_cpuaccess *ctx,
struct platform_device *pdev);
void nvhost_cpuaccess_deinit(struct nvhost_cpuaccess *ctx);
int nvhost_mutex_try_lock(struct nvhost_cpuaccess *ctx, unsigned int idx);
void nvhost_mutex_unlock(struct nvhost_cpuaccess *ctx, unsigned int idx);
static inline bool nvhost_access_module_regs(
struct nvhost_cpuaccess *ctx, u32 module)
{
return (module < NVHOST_MODULE_NUM);
}
void nvhost_read_module_regs(struct nvhost_cpuaccess *ctx, u32 module,
u32 offset, size_t size, void *values);
void nvhost_write_module_regs(struct nvhost_cpuaccess *ctx, u32 module,
u32 offset, size_t size, const void *values);
#endif
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