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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2008-01-22 09:25:55 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-01-22 09:25:55 -0800
commit4ad2b226e1db58ee227f06379b46347bfd0ded39 (patch)
treec7616841c767d31712e16d04b5dfaa598a4e13e0
parentac935cb533b89a69e18ad175656910848ea0d79e (diff)
parent87b4b6634ac112ddfe7b92aae50eb4bf7b128d1a (diff)
Merge branch 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6
* 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6: hwmon: (it87) request only Environment Controller ports
-rw-r--r--drivers/hwmon/it87.c32
1 files changed, 23 insertions, 9 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 6a182e14cf58..ad6c8a319903 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -2,6 +2,14 @@
it87.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring.
+ The IT8705F is an LPC-based Super I/O part that contains UARTs, a
+ parallel port, an IR port, a MIDI port, a floppy controller, etc., in
+ addition to an Environment Controller (Enhanced Hardware Monitor and
+ Fan Controller)
+
+ This driver supports only the Environment Controller in the IT8705F and
+ similar parts. The other devices are supported by different drivers.
+
Supports: IT8705F Super I/O chip w/LPC interface
IT8712F Super I/O chip w/LPC interface
IT8716F Super I/O chip w/LPC interface
@@ -118,9 +126,15 @@ static int fix_pwm_polarity;
/* Length of ISA address segment */
#define IT87_EXTENT 8
-/* Where are the ISA address/data registers relative to the base address */
-#define IT87_ADDR_REG_OFFSET 5
-#define IT87_DATA_REG_OFFSET 6
+/* Length of ISA address segment for Environmental Controller */
+#define IT87_EC_EXTENT 2
+
+/* Offset of EC registers from ISA base address */
+#define IT87_EC_OFFSET 5
+
+/* Where are the ISA address/data registers relative to the EC base address */
+#define IT87_ADDR_REG_OFFSET 0
+#define IT87_DATA_REG_OFFSET 1
/*----- The IT87 registers -----*/
@@ -968,10 +982,10 @@ static int __devinit it87_probe(struct platform_device *pdev)
};
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- if (!request_region(res->start, IT87_EXTENT, DRVNAME)) {
+ if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) {
dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
(unsigned long)res->start,
- (unsigned long)(res->start + IT87_EXTENT - 1));
+ (unsigned long)(res->start + IT87_EC_EXTENT - 1));
err = -EBUSY;
goto ERROR0;
}
@@ -1124,7 +1138,7 @@ ERROR2:
platform_set_drvdata(pdev, NULL);
kfree(data);
ERROR1:
- release_region(res->start, IT87_EXTENT);
+ release_region(res->start, IT87_EC_EXTENT);
ERROR0:
return err;
}
@@ -1137,7 +1151,7 @@ static int __devexit it87_remove(struct platform_device *pdev)
sysfs_remove_group(&pdev->dev.kobj, &it87_group);
sysfs_remove_group(&pdev->dev.kobj, &it87_group_opt);
- release_region(data->addr, IT87_EXTENT);
+ release_region(data->addr, IT87_EC_EXTENT);
platform_set_drvdata(pdev, NULL);
kfree(data);
@@ -1402,8 +1416,8 @@ static int __init it87_device_add(unsigned short address,
const struct it87_sio_data *sio_data)
{
struct resource res = {
- .start = address ,
- .end = address + IT87_EXTENT - 1,
+ .start = address + IT87_EC_OFFSET,
+ .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
.name = DRVNAME,
.flags = IORESOURCE_IO,
};