The behaviour is unmodified, this makes easier to override the heuristic (which
is probably needed for some boards).
Signed-off-by: Luca Tettamanti <kronos.it@xxxxxxxxx>
---
Will follow up with another patch that depends on this one.
drivers/hwmon/asus_atk0110.c | 98 +++++++++++++++++++------------------------
1 file changed, 44 insertions(+), 54 deletions(-)
Index: linux-2.6.git/drivers/hwmon/asus_atk0110.c
===================================================================
--- linux-2.6.git.orig/drivers/hwmon/asus_atk0110.c 2009-12-03 18:01:51.000000000 +0100
+++ linux-2.6.git/drivers/hwmon/asus_atk0110.c 2009-12-07 14:49:49.000000000 +0100
@@ -1047,76 +1047,75 @@
return err;
}
-static int atk_check_old_if(struct atk_data *data)
+static int atk_probe_if(struct atk_data *data)
{
struct device *dev = &data->acpi_dev->dev;
acpi_handle ret;
acpi_status status;
+ int err = 0;
/* RTMP: read temperature */
status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_TMP, &ret);
- if (status != AE_OK) {
+ if (ACPI_SUCCESS(status))
+ data->rtmp_handle = ret;
+ else
dev_dbg(dev, "method " METHOD_OLD_READ_TMP " not found: %s\n",
acpi_format_exception(status));
- return -ENODEV;
- }
- data->rtmp_handle = ret;
/* RVLT: read voltage */
status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_VLT, &ret);
- if (status != AE_OK) {
+ if (ACPI_SUCCESS(status))
+ data->rvlt_handle = ret;
+ else
dev_dbg(dev, "method " METHOD_OLD_READ_VLT " not found: %s\n",
acpi_format_exception(status));
- return -ENODEV;
- }
- data->rvlt_handle = ret;
/* RFAN: read fan status */
status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_FAN, &ret);
- if (status != AE_OK) {
+ if (ACPI_SUCCESS(status))
+ data->rfan_handle = ret;
+ else
dev_dbg(dev, "method " METHOD_OLD_READ_FAN " not found: %s\n",
acpi_format_exception(status));
- return -ENODEV;
- }
- data->rfan_handle = ret;
-
- return 0;
-}
-
-static int atk_check_new_if(struct atk_data *data)
-{
- struct device *dev = &data->acpi_dev->dev;
- acpi_handle ret;
- acpi_status status;
/* Enumeration */
status = acpi_get_handle(data->atk_handle, METHOD_ENUMERATE, &ret);
- if (status != AE_OK) {
+ if (ACPI_SUCCESS(status))
+ data->enumerate_handle = ret;
+ else
dev_dbg(dev, "method " METHOD_ENUMERATE " not found: %s\n",
acpi_format_exception(status));
- return -ENODEV;
- }
- data->enumerate_handle = ret;
/* De-multiplexer (read) */
status = acpi_get_handle(data->atk_handle, METHOD_READ, &ret);
- if (status != AE_OK) {
+ if (ACPI_SUCCESS(status))
+ data->read_handle = ret;
+ else
dev_dbg(dev, "method " METHOD_READ " not found: %s\n",
acpi_format_exception(status));
- return -ENODEV;
- }
- data->read_handle = ret;
/* De-multiplexer (write) */
status = acpi_get_handle(data->atk_handle, METHOD_WRITE, &ret);
- if (status != AE_OK) {
- dev_dbg(dev, "method " METHOD_READ " not found: %s\n",
+ if (ACPI_SUCCESS(status))
+ data->write_handle = ret;
+ else
+ dev_dbg(dev, "method " METHOD_WRITE " not found: %s\n",
acpi_format_exception(status));
- return -ENODEV;
- }
- data->write_handle = ret;
- return 0;
+ /* Check for hwmon methods: first check "old" style methods; note that
+ * both may be present: in this case we stick to the old interface;
+ * analysis of multiple DSDTs indicates that when both interfaces
+ * are present the new one (GGRP/GITM) is not functional.
+ */
+ if (data->rtmp_handle && data->rvlt_handle && data->rfan_handle)
+ data->old_interface = true;
+ else if (data->enumerate_handle && data->read_handle &&
+ data->write_handle)
+ data->old_interface = false;
+ else
+ err = -ENODEV;
+
+ return err;
}
static int atk_add(struct acpi_device *device)
@@ -1155,28 +1154,19 @@
}
ACPI_FREE(buf.pointer);
- /* Check for hwmon methods: first check "old" style methods; note that
- * both may be present: in this case we stick to the old interface;
- * analysis of multiple DSDTs indicates that when both interfaces
- * are present the new one (GGRP/GITM) is not functional.
- */
- err = atk_check_old_if(data);
- if (!err) {
- dev_dbg(&device->dev, "Using old hwmon interface\n");
- data->old_interface = true;
- } else {
- err = atk_check_new_if(data);
- if (err)
- goto out;
-
- dev_dbg(&device->dev, "Using new hwmon interface\n");
- data->old_interface = false;
+ err = atk_probe_if(data);
+ if (err) {
+ dev_err(&device->dev, "No usable hwmon interface detected\n");
+ goto out;
}
- if (data->old_interface)
+ if (data->old_interface) {
+ dev_dbg(&device->dev, "Using old hwmon interface\n");
err = atk_enumerate_old_hwmon(data);
- else
+ } else {
+ dev_dbg(&device->dev, "Using new hwmon interface\n");
err = atk_enumerate_new_hwmon(data);
+ }
if (err < 0)
goto out;
if (err == 0) {
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