diff options
Diffstat (limited to 'arch/arm/mach-msm/include/mach/msm_smd.h')
-rw-r--r-- | arch/arm/mach-msm/include/mach/msm_smd.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/include/mach/msm_smd.h b/arch/arm/mach-msm/include/mach/msm_smd.h new file mode 100644 index 000000000000..8ef65c04ea85 --- /dev/null +++ b/arch/arm/mach-msm/include/mach/msm_smd.h @@ -0,0 +1,82 @@ +/* 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 |