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/* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*
*/
#ifndef _WFD_MDP_SUBDEV_
#define _WFD_MDP_SUBDEV_
#include <linux/videodev2.h>
#include <media/v4l2-subdev.h>
#define MDP_MAGIC_IOCTL 'M'
/* Converts a dma_addr_t (which _might_ be 64 bits) to a 32 bit value.
* This is required because hardware can only access 32 bit addresses,
* and more importantly, the v4l2 spec only allows for 32 bit addresses.
* However in the off chance that we actually manage to get an address
* that can't fit into 32 bits, this macro triggers a WARN_ON and returns
* the truncated 32 bit address */
static inline u32 dma_addr_to_u32(dma_addr_t x)
{
u32 temp = (u32)x;
WARN_ON((dma_addr_t)temp != x);
return temp;
}
struct mdp_buf_info {
void *inst;
void *cookie;
u32 fd;
u32 offset;
u32 kvaddr;
u32 paddr;
};
struct mdp_prop {
void *inst;
u32 height;
u32 width;
};
struct mdp_msg_ops {
void *cookie;
bool secure;
bool iommu_split_domain;
};
static inline bool mdp_buf_info_equals(struct mdp_buf_info *a,
struct mdp_buf_info *b)
{
return a->inst == b->inst
&& a->fd == b->fd
&& a->offset == b->offset
&& a->kvaddr == b->kvaddr
&& a->paddr == b->paddr;
}
#define MDP_Q_BUFFER _IOW(MDP_MAGIC_IOCTL, 1, struct mdp_buf_info *)
#define MDP_DQ_BUFFER _IOR(MDP_MAGIC_IOCTL, 2, struct mdp_out_buf *)
#define MDP_OPEN _IOR(MDP_MAGIC_IOCTL, 3, void **)
#define MDP_SET_PROP _IOW(MDP_MAGIC_IOCTL, 4, struct mdp_prop *)
#define MDP_CLOSE _IOR(MDP_MAGIC_IOCTL, 5, void *)
#define MDP_START _IOR(MDP_MAGIC_IOCTL, 6, void *)
#define MDP_STOP _IOR(MDP_MAGIC_IOCTL, 7, void *)
#define MDP_MMAP _IOR(MDP_MAGIC_IOCTL, 8, struct mem_region_map *)
#define MDP_MUNMAP _IOR(MDP_MAGIC_IOCTL, 9, struct mem_region_map *)
#define MDP_SECURE _IO(MDP_MAGIC_IOCTL, 9)
#ifdef CONFIG_FB_MSM_MDSS_WRITEBACK
extern int mdp_init(struct v4l2_subdev *sd, u32 val);
extern long mdp_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg);
#else
static inline int mdp_init(struct v4l2_subdev *sd, u32 val)
{
return -ENODEV;
}
static inline long mdp_ioctl(struct v4l2_subdev *sd, unsigned int cmd,
void *arg)
{
return -ENODEV;
}
#endif
#endif /* _WFD_MDP_SUBDEV_ */
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