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/* include/linux/smux.h
*
* Copyright (c) 2012, Code Aurora Forum. All rights reserved.
*
* 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 SMUX_H
#define SMUX_H
enum {
SMUX_DATA_0,
SMUX_DATA_1,
SMUX_DATA_2,
SMUX_DATA_3,
SMUX_DATA_4,
SMUX_DATA_5,
SMUX_DATA_6,
SMUX_DATA_7,
SMUX_DATA_8,
SMUX_DATA_9,
SMUX_USB_RMNET_DATA_0,
SMUX_USB_DUN_0,
SMUX_USB_DIAG_0,
SMUX_SYS_MONITOR_0,
SMUX_CSVT_0,
SMUX_DATA_CTL_0 = 32,
SMUX_DATA_CTL_1,
SMUX_DATA_CTL_2,
SMUX_DATA_CTL_3,
SMUX_DATA_CTL_4,
SMUX_DATA_CTL_5,
SMUX_DATA_CTL_6,
SMUX_DATA_CTL_7,
SMUX_DATA_CTL_8,
SMUX_DATA_CTL_9,
SMUX_USB_RMNET_CTL_0,
SMUX_USB_DUN_CTL_0_UNUSED,
SMUX_USB_DIAG_CTL_0,
SMUX_SYS_MONITOR_CTL_0,
SMUX_CSVT_CTL_0,
SMUX_TEST_LCID,
SMUX_NUM_LOGICAL_CHANNELS,
};
enum {
SMUX_CONNECTED,
SMUX_DISCONNECTED,
SMUX_READ_DONE,
SMUX_READ_FAIL,
SMUX_WRITE_DONE,
SMUX_WRITE_FAIL,
SMUX_TIOCM_UPDATE,
SMUX_LOW_WM_HIT,
SMUX_HIGH_WM_HIT,
SMUX_RX_RETRY_HIGH_WM_HIT,
SMUX_RX_RETRY_LOW_WM_HIT,
};
enum {
SMUX_CH_OPTION_LOCAL_LOOPBACK = 1 << 0,
SMUX_CH_OPTION_REMOTE_LOOPBACK = 1 << 1,
SMUX_CH_OPTION_REMOTE_TX_STOP = 1 << 2,
SMUX_CH_OPTION_AUTO_REMOTE_TX_STOP = 1 << 3,
};
struct smux_meta_disconnected {
int is_ssr;
};
struct smux_meta_read {
void *pkt_priv;
void *buffer;
int len;
};
struct smux_meta_write {
void *pkt_priv;
void *buffer;
int len;
};
struct smux_meta_tiocm {
uint32_t tiocm_old;
uint32_t tiocm_new;
};
#ifdef CONFIG_N_SMUX
int msm_smux_open(uint8_t lcid, void *priv,
void (*notify)(void *priv, int event_type, const void *metadata),
int (*get_rx_buffer)(void *priv, void **pkt_priv,
void **buffer, int size));
int msm_smux_close(uint8_t lcid);
/**
* Write data to a logical channel.
*
* @lcid Logical channel ID
* @pkt_priv Client data that will be returned with the SMUX_WRITE_DONE or
* SMUX_WRITE_FAIL notification.
* @data Data to write
* @len Length of @data
*
* @returns 0 for success, <0 otherwise
*
* Data may be written immediately after msm_smux_open() is called, but
* the data will wait in the transmit queue until the channel has been
* fully opened.
*
* Once the data has been written, the client will receive either a completion
* (SMUX_WRITE_DONE) or a failure notice (SMUX_WRITE_FAIL).
*/
int msm_smux_write(uint8_t lcid, void *pkt_priv, const void *data, int len);
int msm_smux_is_ch_full(uint8_t lcid);
int msm_smux_is_ch_low(uint8_t lcid);
long msm_smux_tiocm_get(uint8_t lcid);
int msm_smux_tiocm_set(uint8_t lcid, uint32_t set, uint32_t clear);
int msm_smux_set_ch_option(uint8_t lcid, uint32_t set, uint32_t clear);
#else
static inline int msm_smux_open(uint8_t lcid, void *priv,
void (*notify)(void *priv, int event_type, const void *metadata),
int (*get_rx_buffer)(void *priv, void **pkt_priv,
void **buffer, int size))
{
return -ENODEV;
}
static inline int msm_smux_close(uint8_t lcid)
{
return -ENODEV;
}
static inline int msm_smux_write(uint8_t lcid, void *pkt_priv,
const void *data, int len)
{
return -ENODEV;
}
static inline int msm_smux_is_ch_full(uint8_t lcid)
{
return -ENODEV;
}
static inline int msm_smux_is_ch_low(uint8_t lcid)
{
return -ENODEV;
}
static inline long msm_smux_tiocm_get(uint8_t lcid)
{
return 0;
}
static inline int msm_smux_tiocm_set(uint8_t lcid, uint32_t set, uint32_t clear)
{
return -ENODEV;
}
static inline int msm_smux_set_ch_option(uint8_t lcid, uint32_t set,
uint32_t clear)
{
return -ENODEV;
}
#endif
#endif
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