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/*
* ADB bus definitions for Open Hack'Ware
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License V2
* as published by the Free Software Foundation
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
typedef struct adb_bus_t adb_bus_t;
typedef struct adb_dev_t adb_dev_t;
#define ADB_BUF_SIZE 8
struct adb_bus_t {
void *host;
int (*req)(void *host, const uint8_t *snd_buf, int len, uint8_t *rcv_buf);
adb_dev_t *devices;
};
struct adb_dev_t {
adb_dev_t *next;
adb_bus_t *bus;
uint8_t addr;
uint8_t type;
void *state;
};
#define ADB_BUF_SIZE 8
/* ADB commands */
enum {
ADB_SEND_RESET = 0x00,
ADB_FLUSH = 0x01,
ADB_LISTEN = 0x08,
ADB_TALK = 0x0C,
};
/* ADB default IDs before relocation */
enum {
ADB_PROTECT = 0x01,
ADB_KEYBD = 0x02,
ADB_MOUSE = 0x03,
ADB_ABS = 0x04,
ADB_MODEM = 0x05,
ADB_RES = 0x06,
ADB_MISC = 0x07,
};
/* ADB special device handlers IDs */
enum {
ADB_CHADDR = 0x00,
ADB_CHADDR_ACTIV = 0xFD,
ADB_CHADDR_NOCOLL = 0xFE,
ADB_SELF_TEST = 0xFF,
};
int adb_cmd (adb_dev_t *dev, uint8_t cmd, uint8_t reg,
uint8_t *buf, int len);
void adb_bus_reset (adb_bus_t *bus);
adb_bus_t *adb_bus_new (void *host,
int (*req)(void *host, const uint8_t *snd_buf,
int len, uint8_t *rcv_buf));
int adb_bus_init (char *path, adb_bus_t *bus);
static inline int adb_reset (adb_bus_t *bus)
{
adb_dev_t fake_device;
memset(&fake_device, 0, sizeof(adb_dev_t));
fake_device.bus = bus;
return adb_cmd(&fake_device, ADB_SEND_RESET, 0, NULL, 0);
}
static inline int adb_flush (adb_dev_t *dev)
{
return adb_cmd(dev, ADB_FLUSH, 0, NULL, 0);
}
static inline int adb_reg_get (adb_dev_t *dev, uint8_t reg, uint8_t *buf)
{
return adb_cmd(dev, ADB_TALK, reg, buf, 0);
}
static inline int adb_reg_set (adb_dev_t *dev, uint8_t reg,
uint8_t *buf, int len)
{
return adb_cmd(dev, ADB_LISTEN, reg, buf, len);
}
#ifdef DEBUG_ADB
#define ADB_DPRINTF(fmt, args...) \
do { printk("ADB - %s: " fmt, __func__ , ##args); } while (0)
#else
#define ADB_DPRINTF(fmt, args...) do { } while (0)
#endif
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