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/* linux/include/asm-arm/arch-msm/msm_smd.h
*
* Copyright (C) 2007 Google, Inc.
* Copyright (c) 2009, Code Aurora Forum. All rights reserved.
* Author: Brian Swetland <swetland@google.com>
*
* 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 __ASM_ARCH_MSM_SMD_H
#define __ASM_ARCH_MSM_SMD_H
typedef struct smd_channel smd_channel_t;
/* warning: notify() may be called before open returns */
int smd_open(const char *name, smd_channel_t **ch, void *priv,
void (*notify)(void *priv, unsigned event));
#define SMD_EVENT_DATA 1
#define SMD_EVENT_OPEN 2
#define SMD_EVENT_CLOSE 3
int smd_close(smd_channel_t *ch);
/* passing a null pointer for data reads and discards */
int smd_read(smd_channel_t *ch, void *data, int len);
int smd_read_from_cb(smd_channel_t *ch, void *data, int len);
/* Write to stream channels may do a partial write and return
** the length actually written.
** Write to packet channels will never do a partial write --
** it will return the requested length written or an error.
*/
int smd_write(smd_channel_t *ch, const void *data, int len);
int smd_write_avail(smd_channel_t *ch);
int smd_read_avail(smd_channel_t *ch);
/* Returns the total size of the current packet being read.
** Returns 0 if no packets available or a stream channel.
*/
int smd_cur_packet_size(smd_channel_t *ch);
#if 0
/* these are interruptable waits which will block you until the specified
** number of bytes are readable or writable.
*/
int smd_wait_until_readable(smd_channel_t *ch, int bytes);
int smd_wait_until_writable(smd_channel_t *ch, int bytes);
#endif
/* these are used to get and set the IF sigs of a channel.
* DTR and RTS can be set; DSR, CTS, CD and RI can be read.
*/
int smd_tiocmget(smd_channel_t *ch);
int smd_tiocmset(smd_channel_t *ch, unsigned int set, unsigned int clear);
#if defined(CONFIG_MSM_N_WAY_SMD)
enum {
SMD_APPS_MODEM = 0,
SMD_APPS_QDSP,
SMD_MODEM_QDSP
};
#else
enum {
SMD_APPS_MODEM = 0
};
#endif
int smd_named_open_on_edge(const char *name, uint32_t edge, smd_channel_t **_ch,
void *priv, void (*notify)(void *, unsigned));
#endif
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