Commit 9dcba7f2 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
Browse files

gayle: add "doubler" parameter 



* Add "doubler" parameter to enable support for IDE doublers.

* Obsolete "ide=doubler" kernel parameter.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 4706a7e0

Documentation/ide/ide.txt

+3 −6
Original line number Diff line number Diff line
@@ -181,12 +181,6 @@ driver using the "options=" keyword to insmod, while replacing any ',' with 
Summary of ide driver parameters for kernel command line

--------------------------------------------------------



 "ide=doubler"		: probe/support IDE doublers on Amiga



There may be more options than shown -- use the source, Luke!



Everything else is rejected with a "BAD OPTION" message.



For legacy IDE VLB host drivers (ali14xx/dtc2278/ht6560b/qd65xx/umc8672)

you need to explicitly enable probing by using "probe" kernel parameter,

i.e. to enable probing for ALI M14xx chipsets (ali14xx host driver) use:
@@ -203,6 +197,9 @@ are detected automatically). 
You also need to use "probe" kernel parameter for ide-4drives driver

(support for IDE generic chipset with four drives on one port).



To enable support for IDE doublers on Amiga use "doubler" kernel parameter

for gayle host driver (i.e. "gayle.doubler" if the driver is built-in).



To force ignoring cable detection (this should be needed only if you're using

short 40-wires cable which cannot be automatically detected - if this is not

a case please report it as a bug instead) use "ignore_cable" kernel parameter:

drivers/ide/ide.c

+1 −1
Original line number Diff line number Diff line
@@ -866,7 +866,7 @@ static int __init ide_setup(char *s) 


		printk(" : Enabled support for IDE doublers\n");

		ide_doubler = 1;

		return 1;

		goto obsolete_option;

	}

#endif /* CONFIG_BLK_DEV_IDEDOUBLER */

drivers/ide/legacy/gayle.c

+2 −0
Original line number Diff line number Diff line
@@ -63,6 +63,8 @@ 
#define GAYLE_HAS_CONTROL_REG	(!ide_doubler)

#define GAYLE_IDEREG_SIZE	(ide_doubler ? 0x1000 : 0x2000)

int ide_doubler = 0;	/* support IDE doublers? */

module_param_named(doubler, ide_doubler, bool, 0);

MODULE_PARM_DESC(doubler, "enable support for IDE doublers");

#endif /* CONFIG_BLK_DEV_IDEDOUBLER */