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w1: added w1 reset command

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Command which allows to reset the bus.

Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Paul Alfille <paul.alfille@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Evgeniy Polyakov 2009-01-07 18:09:04 -08:00 committed by Linus Torvalds
parent 325a06fb13
commit f89735c4e2
3 changed files with 10 additions and 0 deletions
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6
Documentation/w1/w1.netlink
View file

@ -112,6 +112,12 @@ cn_msg->len = sizeof(struct w1_netlink_msg) +
sizeof(struct w1_netlink_cmd) + sizeof(struct w1_netlink_cmd) +
N*8; N*8;
W1 reset command.
[cn_msg]
[w1_netlink_msg type = W1_MASTER_CMD
id is equal to the bus master id to use for searching]
[w1_netlink_cmd cmd = W1_CMD_RESET]
Operation steps in w1 core when new command is received. Operation steps in w1 core when new command is received.
======================================================= =======================================================

3
drivers/w1/w1_netlink.c
View file

@ -197,6 +197,9 @@ static int w1_process_command_master(struct w1_master *dev, struct cn_msg *req_m
case W1_CMD_TOUCH: case W1_CMD_TOUCH:
err = w1_process_command_io(dev, msg, hdr, cmd); err = w1_process_command_io(dev, msg, hdr, cmd);
break; break;
case W1_CMD_RESET:
err = w1_reset_bus(dev);
break;
default: default:
cmd->res = EINVAL; cmd->res = EINVAL;
cn_netlink_send(msg, 0, GFP_KERNEL); cn_netlink_send(msg, 0, GFP_KERNEL);

1
drivers/w1/w1_netlink.h
View file

@ -58,6 +58,7 @@ enum w1_commands {
W1_CMD_SEARCH, W1_CMD_SEARCH,
W1_CMD_ALARM_SEARCH, W1_CMD_ALARM_SEARCH,
W1_CMD_TOUCH, W1_CMD_TOUCH,
W1_CMD_RESET,
W1_CMD_MAX, W1_CMD_MAX,
}; };