110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
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/*
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* ADB bus definitions for Open Hack'Ware
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*
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* Copyright (c) 2004-2005 Jocelyn Mayer
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License V2
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* as published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#ifndef __ADB_BUS_H__
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#define __ADB_BUS_H__
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typedef struct adb_bus_t adb_bus_t;
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typedef struct adb_dev_t adb_dev_t;
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#define ADB_BUF_SIZE 8
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struct adb_bus_t {
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void *host;
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int (*req)(void *host, const uint8_t *snd_buf, int len, uint8_t *rcv_buf);
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adb_dev_t *devices;
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};
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struct adb_dev_t {
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adb_dev_t *next;
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adb_bus_t *bus;
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uint8_t addr;
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uint8_t type;
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void *state;
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};
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#define ADB_BUF_SIZE 8
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/* ADB commands */
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enum {
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ADB_SEND_RESET = 0x00,
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ADB_FLUSH = 0x01,
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ADB_LISTEN = 0x08,
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ADB_TALK = 0x0C,
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};
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/* ADB default IDs before relocation */
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enum {
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ADB_PROTECT = 0x01,
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ADB_KEYBD = 0x02,
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ADB_MOUSE = 0x03,
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ADB_ABS = 0x04,
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ADB_MODEM = 0x05,
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ADB_RES = 0x06,
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ADB_MISC = 0x07,
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};
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/* ADB special device handlers IDs */
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enum {
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ADB_CHADDR = 0x00,
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ADB_CHADDR_ACTIV = 0xFD,
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ADB_CHADDR_NOCOLL = 0xFE,
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ADB_SELF_TEST = 0xFF,
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};
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int adb_cmd (adb_dev_t *dev, uint8_t cmd, uint8_t reg,
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uint8_t *buf, int len);
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void adb_bus_reset (adb_bus_t *bus);
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adb_bus_t *adb_bus_new (void *host,
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int (*req)(void *host, const uint8_t *snd_buf,
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int len, uint8_t *rcv_buf));
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int adb_bus_init (char *path, adb_bus_t *bus);
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static inline int adb_reset (adb_bus_t *bus)
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{
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adb_dev_t fake_device;
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memset(&fake_device, 0, sizeof(adb_dev_t));
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fake_device.bus = bus;
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return adb_cmd(&fake_device, ADB_SEND_RESET, 0, NULL, 0);
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}
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static inline int adb_flush (adb_dev_t *dev)
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{
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return adb_cmd(dev, ADB_FLUSH, 0, NULL, 0);
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}
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static inline int adb_reg_get (adb_dev_t *dev, uint8_t reg, uint8_t *buf)
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{
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return adb_cmd(dev, ADB_TALK, reg, buf, 0);
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}
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static inline int adb_reg_set (adb_dev_t *dev, uint8_t reg,
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uint8_t *buf, int len)
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{
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return adb_cmd(dev, ADB_LISTEN, reg, buf, len);
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}
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#ifdef DEBUG_ADB
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#define ADB_DPRINTF(fmt, args...) \
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do { printk("ADB - %s: " fmt, __func__ , ##args); } while (0)
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#else
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#define ADB_DPRINTF(fmt, args...) do { } while (0)
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#endif
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#endif
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