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Commit f89735c4 authored by Evgeniy Polyakov's avatar Evgeniy Polyakov Committed by Linus Torvalds
Browse files

w1: added w1 reset command 



Command which allows to reset the bus.

Signed-off-by: default avatarEvgeniy Polyakov <zbr@ioremap.net>
Cc: Paul Alfille <paul.alfille@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 325a06fb

Documentation/w1/w1.netlink

+6 −0
Original line number Original line Diff line number Diff line
@@ -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.

=======================================================

=======================================================

drivers/w1/w1_netlink.c

+3 −0
Original line number Original line Diff line number Diff line
@@ -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);

drivers/w1/w1_netlink.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -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,

};

};