hwmon: (dme1737) probe all addresses

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>

diff --git a/Documentation/hwmon/dme1737 b/Documentation/hwmon/dme1737
index 8f446070e64a56ebc2c19a98c3f5e40688648b06..b1fe009994396030943ad570ddb84abe42611de5 100644 (file)
--- a/Documentation/hwmon/dme1737
+++ b/Documentation/hwmon/dme1737
@@ -22,6 +22,10 @@ Module Parameters
                        and PWM output control functions. Using this parameter
                        shouldn't be required since the BIOS usually takes care
                        of this.
                        and PWM output control functions. Using this parameter
                        shouldn't be required since the BIOS usually takes care
                        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
 complaining. The driver will say so if it is necessary.
 
 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.

diff --git a/drivers/hwmon/dme1737.c b/drivers/hwmon/dme1737.c
index c24b5b370daa81a9d4275ac159886d53a96ee3d7..5a3d41fbdb3c65eb4a20932af5f800e3ca6fd450 100644 (file)
--- a/drivers/hwmon/dme1737.c
+++ b/drivers/hwmon/dme1737.c
@@ -48,6 +48,11 @@ static unsigned short force_id;
 module_param(force_id, ushort, 0);
 MODULE_PARM_DESC(force_id, "Override the detected device ID");
 
 module_param(force_id, ushort, 0);
 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 */
 static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END};
 
 /* Addresses to scan */
 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;
        }
                /* Return 0 if we didn't find an ISA device */
                return 0;
        }