diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/macintosh/adb-iop.c | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/drivers/macintosh/adb-iop.c b/drivers/macintosh/adb-iop.c index 8594e4f9a830..f3d1a460fbce 100644 --- a/drivers/macintosh/adb-iop.c +++ b/drivers/macintosh/adb-iop.c @@ -7,10 +7,6 @@ * 1999-07-01 (jmt) - First implementation for new driver architecture. * * 1999-07-31 (jmt) - First working version. - * - * TODO: - * - * o Implement SRQ handling. */ #include <linux/types.h> @@ -28,6 +24,7 @@ static struct adb_request *current_req; static struct adb_request *last_req; +static unsigned int autopoll_devs; static enum adb_iop_state { idle, @@ -123,7 +120,7 @@ static void adb_iop_listen(struct iop_msg *msg) amsg->flags & ADB_IOP_AUTOPOLL); } - msg->reply[0] = ADB_IOP_AUTOPOLL; + msg->reply[0] = autopoll_devs ? ADB_IOP_AUTOPOLL : 0; iop_complete_message(msg); if (req_done) @@ -231,9 +228,32 @@ static int adb_iop_write(struct adb_request *req) return 0; } +static void adb_iop_set_ap_complete(struct iop_msg *msg) +{ + struct adb_iopmsg *amsg = (struct adb_iopmsg *)msg->message; + + autopoll_devs = (amsg->data[1] << 8) | amsg->data[0]; +} + static int adb_iop_autopoll(int devs) { - /* TODO: how do we enable/disable autopoll? */ + struct adb_iopmsg amsg; + unsigned long flags; + unsigned int mask = (unsigned int)devs & 0xFFFE; + + local_irq_save(flags); + + amsg.flags = ADB_IOP_SET_AUTOPOLL | (mask ? ADB_IOP_AUTOPOLL : 0); + amsg.count = 2; + amsg.cmd = 0; + amsg.data[0] = mask & 0xFF; + amsg.data[1] = (mask >> 8) & 0xFF; + + iop_send_message(ADB_IOP, ADB_CHAN, NULL, sizeof(amsg), (__u8 *)&amsg, + adb_iop_set_ap_complete); + + local_irq_restore(flags); + return 0; } |