Commit ccf0904c authored by Lee, Chun-Yi's avatar Lee, Chun-Yi Committed by Greg Kroah-Hartman

platform/x86: acer-wmi: setup accelerometer when machine has appropriate notify event

commit 98d610c3 upstream.

The accelerometer event relies on the ACERWMID_EVENT_GUID notify.
So, this patch changes the codes to setup accelerometer input device
when detected ACERWMID_EVENT_GUID. It avoids that the accel input
device created on every Acer machines.

In addition, patch adds a clearly parsing logic of accelerometer hid
to acer_wmi_get_handle_cb callback function. It is positive matching
the "SENR" name with "BST0001" device to avoid non-supported hardware.
Reported-by: default avatarBjørn Mork <bjorn@mork.no>
Cc: Darren Hart <dvhart@infradead.org>
Signed-off-by: default avatarLee, Chun-Yi <jlee@suse.com>
[andy: slightly massage commit message]
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 51f8d95c
......@@ -1816,11 +1816,24 @@ static int __init acer_wmi_enable_lm(void)
return status;
}
#define ACER_WMID_ACCEL_HID "BST0001"
static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
void *ctx, void **retval)
{
struct acpi_device *dev;
if (!strcmp(ctx, "SENR")) {
if (acpi_bus_get_device(ah, &dev))
return AE_OK;
if (!strcmp(ACER_WMID_ACCEL_HID, acpi_device_hid(dev)))
return AE_OK;
} else
return AE_OK;
*(acpi_handle *)retval = ah;
return AE_OK;
return AE_CTRL_TERMINATE;
}
static int __init acer_wmi_get_handle(const char *name, const char *prop,
......@@ -1847,7 +1860,7 @@ static int __init acer_wmi_accel_setup(void)
{
int err;
err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
err = acer_wmi_get_handle("SENR", ACER_WMID_ACCEL_HID, &gsensor_handle);
if (err)
return err;
......@@ -2185,10 +2198,11 @@ static int __init acer_wmi_init(void)
err = acer_wmi_input_setup();
if (err)
return err;
err = acer_wmi_accel_setup();
if (err)
return err;
}
acer_wmi_accel_setup();
err = platform_driver_register(&acer_platform_driver);
if (err) {
pr_err("Unable to register platform driver\n");
......
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