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Subject[PATCH 2/8] ideapad: check VPC bit before sync rfkill hw status
Date
Check VPC bit to make sure the HW rfkill is touched.

Signed-off-by: Ike Panhc <ike.pan@canonical.com>
---
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 af630e2..6176597 100644
--- a/drivers/platform/x86/ideapad_acpi.c
+++ b/drivers/platform/x86/ideapad_acpi.c
@@ -381,7 +381,21 @@ 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 = {
--
1.7.0.4


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