diff options
| author |   Ike Panhc <ike.pan@canonical.com> | 2010-10-01 15:39:05 +0800 |
|---|---|---|
| committer |   Matthew Garrett <mjg@redhat.com> | 2010-10-21 09:36:49 -0400 |
| commit | 8e7d354370f61cbe82a8b4a0f74224aed900b410 (patch) | |
| tree | a91e29fd981992e2f3dc59e14418dbe2dc855160 /drivers/platform | |
| parent | ideapad: add ACPI helpers (diff) | |
| download | linux-dev-8e7d354370f61cbe82a8b4a0f74224aed900b410.tar.xz linux-dev-8e7d354370f61cbe82a8b4a0f74224aed900b410.zip | |
ideapad: check VPC bit before sync rfkill hw status
Check VPC bit to make sure the HW rfkill is touched.
Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/ideapad_acpi.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/platform/x86/ideapad_acpi.c b/drivers/platform/x86/ideapad_acpi.c index c87693c7dde0..e07d6072e75c 100644 --- a/drivers/platform/x86/ideapad_acpi.c +++ b/drivers/platform/x86/ideapad_acpi.c @@ -379,7 +379,21 @@ static int ideapad_acpi_remove(struct acpi_device *adevice, int type) static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event) { - ideapad_sync_rfk_state(adevice); + acpi_handle handle = adevice->handle; + unsigned long vpc1, vpc2, vpc_bit; + + if (read_ec_data(handle, 0x10, &vpc1)) + return; + if (read_ec_data(handle, 0x1A, &vpc2)) + return; + + vpc1 = (vpc2 << 8) | vpc1; + for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) { + if (test_bit(vpc_bit, &vpc1)) { + if (vpc_bit == 9) + ideapad_sync_rfk_state(adevice); + } + } } static struct acpi_driver ideapad_acpi_driver = { |