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gayle: add "doubler" parameter

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

* Obsolete "ide=doubler" kernel parameter.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-04-27 15:38:30 +02:00
parent 4706a7e03a
commit 9dcba7f2b7
3 changed files with 6 additions and 7 deletions
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9
Documentation/ide/ide.txt
View file

@ -181,12 +181,6 @@ driver using the "options=" keyword to insmod, while replacing any ',' with
Summary of ide driver parameters for kernel command line 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) For legacy IDE VLB host drivers (ali14xx/dtc2278/ht6560b/qd65xx/umc8672)
you need to explicitly enable probing by using "probe" kernel parameter, you need to explicitly enable probing by using "probe" kernel parameter,
i.e. to enable probing for ALI M14xx chipsets (ali14xx host driver) use: 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 You also need to use "probe" kernel parameter for ide-4drives driver
(support for IDE generic chipset with four drives on one port). (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 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 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: a case please report it as a bug instead) use "ignore_cable" kernel parameter:

2
drivers/ide/ide.c
View file

@ -866,7 +866,7 @@ static int __init ide_setup(char *s)
printk(" : Enabled support for IDE doublers\n"); printk(" : Enabled support for IDE doublers\n");
ide_doubler = 1; ide_doubler = 1;
return 1; goto obsolete_option;
} }
#endif /* CONFIG_BLK_DEV_IDEDOUBLER */ #endif /* CONFIG_BLK_DEV_IDEDOUBLER */

2
drivers/ide/legacy/gayle.c
View file

@ -63,6 +63,8 @@
#define GAYLE_HAS_CONTROL_REG (!ide_doubler) #define GAYLE_HAS_CONTROL_REG (!ide_doubler)
#define GAYLE_IDEREG_SIZE (ide_doubler ? 0x1000 : 0x2000) #define GAYLE_IDEREG_SIZE (ide_doubler ? 0x1000 : 0x2000)
int ide_doubler = 0; /* support IDE doublers? */ 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 */ #endif /* CONFIG_BLK_DEV_IDEDOUBLER */