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W1: ds2490.c magic number work

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This replaces some magic numbers with marcos and corrects one marco.

Signed-off-by: David Fries <david@fries.net>
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Fries 2008-10-15 22:05:08 -07:00 committed by Linus Torvalds
parent e464af2473
commit 19e7184f75
1 changed files with 12 additions and 4 deletions
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16
drivers/w1/masters/ds2490.c
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@ -88,7 +88,7 @@
#define COMM_DT 0x2000
#define COMM_SPU 0x1000
#define COMM_F 0x0800
#define COMM_NTP 0x0400
#define COMM_NTF 0x0400
#define COMM_ICP 0x0200
#define COMM_RST 0x0100
@ -440,7 +440,7 @@ static int ds_wait_status(struct ds_device *dev, struct ds_status *st)
printk("\n");
}
#endif
} while(!(buf[0x08] & 0x20) && !(err < 0) && ++count < 100);
} while (!(buf[0x08] & ST_IDLE) && !(err < 0) && ++count < 100);
if (err >= 16 && st->status & ST_EPOF) {
printk(KERN_INFO "Resetting device after ST_EPOF.\n");
@ -470,8 +470,16 @@ static int ds_reset(struct ds_device *dev)
{
int err;
//err = ds_send_control(dev, COMM_1_WIRE_RESET | COMM_F | COMM_IM | COMM_SE, SPEED_FLEXIBLE);
err = ds_send_control(dev, 0x43, SPEED_NORMAL);
/* Other potentionally interesting flags for reset.
*
* COMM_NTF: Return result register feedback. This could be used to
* detect some conditions such as short, alarming presence, or
* detect if a new device was detected.
*
* COMM_SE which allows SPEED_NORMAL, SPEED_FLEXIBLE, SPEED_OVERDRIVE:
* Select the data transfer rate.
*/
err = ds_send_control(dev, COMM_1_WIRE_RESET | COMM_IM, SPEED_NORMAL);
if (err)
return err;