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hwmon: (dme1737) probe all addresses

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This patch adds a module load parameter to enable probing of
non-standard LPC addresses 0x162e and 0x164e when scanning for supported
ISA chips.

Signed-Off-By: Juerg Haefliger <juergh at gmail.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
This commit is contained in:
Juerg Haefliger
2008-04-03 21:34:19 -07:00
committed by Mark M. Hoffman
parent 9b257714a3
commit 92430b6feb
2 changed files with 13 additions and 1 deletions
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4
Documentation/hwmon/dme1737
View File

@@ -22,6 +22,10 @@ Module Parameters
and PWM output control functions. Using this parameter and PWM output control functions. Using this parameter
shouldn't be required since the BIOS usually takes care shouldn't be required since the BIOS usually takes care
of this. of this.
* probe_all_addr: bool Include non-standard LPC addresses 0x162e and 0x164e
when probing for ISA devices. This is required for the
following boards:
- VIA EPIA SN18000
Note that there is no need to use this parameter if the driver loads without Note that there is no need to use this parameter if the driver loads without
complaining. The driver will say so if it is necessary. complaining. The driver will say so if it is necessary.

10
drivers/hwmon/dme1737.c
View File

@@ -48,6 +48,11 @@ static unsigned short force_id;
module_param(force_id, ushort, 0); module_param(force_id, ushort, 0);
MODULE_PARM_DESC(force_id, "Override the detected device ID"); MODULE_PARM_DESC(force_id, "Override the detected device ID");
static int probe_all_addr;
module_param(probe_all_addr, bool, 0);
MODULE_PARM_DESC(probe_all_addr, "Include probing of non-standard LPC "
"addresses");
/* Addresses to scan */ /* Addresses to scan */
static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END}; static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END};
@@ -2430,7 +2435,10 @@ static int __init dme1737_init(void)
} }
if (dme1737_isa_detect(0x2e, &addr) && if (dme1737_isa_detect(0x2e, &addr) &&
dme1737_isa_detect(0x4e, &addr)) { dme1737_isa_detect(0x4e, &addr) &&
(!probe_all_addr ||
(dme1737_isa_detect(0x162e, &addr) &&
dme1737_isa_detect(0x164e, &addr)))) {
/* Return 0 if we didn't find an ISA device */ /* Return 0 if we didn't find an ISA device */
return 0; return 0;
} }