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1 | /* linux/include/asm-arm/arch-msm/msm_smd.h |
| 2 | * | |
| 3 | * Copyright (C) 2007 Google, Inc. | |
| 4 | * Author: Brian Swetland <swetland@google.com> | |
| 5 | * | |
| 6 | * This software is licensed under the terms of the GNU General Public | |
| 7 | * License version 2, as published by the Free Software Foundation, and | |
| 8 | * may be copied, distributed, and modified under those terms. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | * GNU General Public License for more details. | |
| 14 | * | |
| 15 | */ | |
| 16 | ||
| 17 | #ifndef __ASM_ARCH_MSM_SMD_H | |
| 18 | #define __ASM_ARCH_MSM_SMD_H | |
| 19 | ||
| 20 | typedef struct smd_channel smd_channel_t; | |
| 21 | ||
| 22 | /* warning: notify() may be called before open returns */ | |
| 23 | int smd_open(const char *name, smd_channel_t **ch, void *priv, | |
| 24 | void (*notify)(void *priv, unsigned event)); | |
| 25 | ||
| 26 | #define SMD_EVENT_DATA 1 | |
| 27 | #define SMD_EVENT_OPEN 2 | |
| 28 | #define SMD_EVENT_CLOSE 3 | |
| 29 | ||
| 30 | int smd_close(smd_channel_t *ch); | |
| 31 | ||
| 32 | /* passing a null pointer for data reads and discards */ | |
| 33 | int smd_read(smd_channel_t *ch, void *data, int len); | |
| 34 | ||
| 35 | /* Write to stream channels may do a partial write and return | |
| 36 | ** the length actually written. | |
| 37 | ** Write to packet channels will never do a partial write -- | |
| 38 | ** it will return the requested length written or an error. | |
| 39 | */ | |
| 40 | int smd_write(smd_channel_t *ch, const void *data, int len); | |
| 41 | ||
| 42 | int smd_write_avail(smd_channel_t *ch); | |
| 43 | int smd_read_avail(smd_channel_t *ch); | |
| 44 | ||
| 45 | /* Returns the total size of the current packet being read. | |
| 46 | ** Returns 0 if no packets available or a stream channel. | |
| 47 | */ | |
| 48 | int smd_cur_packet_size(smd_channel_t *ch); | |
| 49 | ||
| 50 | /* used for tty unthrottling and the like -- causes the notify() | |
| 51 | ** callback to be called from the same lock context as is used | |
| 52 | ** when it is called from channel updates | |
| 53 | */ | |
| 54 | void smd_kick(smd_channel_t *ch); | |
| 55 | ||
| 56 | ||
| 57 | #if 0 | |
| 58 | /* these are interruptable waits which will block you until the specified | |
| 59 | ** number of bytes are readable or writable. | |
| 60 | */ | |
| 61 | int smd_wait_until_readable(smd_channel_t *ch, int bytes); | |
| 62 | int smd_wait_until_writable(smd_channel_t *ch, int bytes); | |
| 63 | #endif | |
| 64 | ||
| 65 | typedef enum | |
| 66 | { | |
| 67 | SMD_PORT_DS = 0, | |
| 68 | SMD_PORT_DIAG, | |
| 69 | SMD_PORT_RPC_CALL, | |
| 70 | SMD_PORT_RPC_REPLY, | |
| 71 | SMD_PORT_BT, | |
| 72 | SMD_PORT_CONTROL, | |
| 73 | SMD_PORT_MEMCPY_SPARE1, | |
| 74 | SMD_PORT_DATA1, | |
| 75 | SMD_PORT_DATA2, | |
| 76 | SMD_PORT_DATA3, | |
| 77 | SMD_PORT_DATA4, | |
| 78 | SMD_PORT_DATA5, | |
| 79 | SMD_PORT_DATA6, | |
| 80 | SMD_PORT_DATA7, | |
| 81 | SMD_PORT_DATA8, | |
| 82 | SMD_PORT_DATA9, | |
| 83 | SMD_PORT_DATA10, | |
| 84 | SMD_PORT_DATA11, | |
| 85 | SMD_PORT_DATA12, | |
| 86 | SMD_PORT_DATA13, | |
| 87 | SMD_PORT_DATA14, | |
| 88 | SMD_PORT_DATA15, | |
| 89 | SMD_PORT_DATA16, | |
| 90 | SMD_PORT_DATA17, | |
| 91 | SMD_PORT_DATA18, | |
| 92 | SMD_PORT_DATA19, | |
| 93 | SMD_PORT_DATA20, | |
| 94 | SMD_PORT_GPS_NMEA, | |
| 95 | SMD_PORT_BRIDGE_1, | |
| 96 | SMD_PORT_BRIDGE_2, | |
| 97 | SMD_PORT_BRIDGE_3, | |
| 98 | SMD_PORT_BRIDGE_4, | |
| 99 | SMD_PORT_BRIDGE_5, | |
| 100 | SMD_PORT_LOOPBACK, | |
| 101 | SMD_PORT_CS_APPS_MODEM, | |
| 102 | SMD_PORT_CS_APPS_DSP, | |
| 103 | SMD_PORT_CS_MODEM_DSP, | |
| 104 | SMD_NUM_PORTS, | |
| 105 | } smd_port_id_type; | |
| 106 | ||
| 107 | #endif |