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ideapad: rewrite the hw rfkill notify

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1. Read hw rfkill status by ec command
2. Not to touch sw status of each rfkill when hw rfkill notify
3. Initial rfkill status when module loaded

Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Ike Panhc 2010-10-01 15:39:49 +08:00 committed by Matthew Garrett
parent 26c81d5c9a
commit 2b7266bd49
1 changed files with 18 additions and 37 deletions
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55
drivers/platform/x86/ideapad_acpi.c
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@ -160,32 +160,6 @@ static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
}
/* the above is ACPI helpers */
static int ideapad_dev_get_state(int device)
{
acpi_status status;
union acpi_object in_param;
struct acpi_object_list input = { 1, &in_param };
struct acpi_buffer output;
union acpi_object out_obj;
output.length = sizeof(out_obj);
output.pointer = &out_obj;
in_param.type = ACPI_TYPE_INTEGER;
in_param.integer.value = device + 1;
status = acpi_evaluate_object(NULL, "\\_SB_.GECN", &input, &output);
if (ACPI_FAILURE(status)) {
printk(KERN_WARNING "IdeaPAD \\_SB_.GECN method failed %d\n", status);
return -ENODEV;
}
if (out_obj.type != ACPI_TYPE_INTEGER) {
printk(KERN_WARNING "IdeaPAD \\_SB_.GECN method returned unexpected type\n");
return -ENODEV;
}
return out_obj.integer.value;
}
static int ideapad_dev_set_state(int device, int state)
{
acpi_status status;
@ -253,32 +227,39 @@ static struct rfkill_ops ideapad_rfk_ops = {
static void ideapad_sync_rfk_state(struct acpi_device *adevice)
{
struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
int hw_blocked = !ideapad_dev_get_state(IDEAPAD_DEV_KILLSW);
acpi_handle handle = priv->handle;
unsigned long hw_blocked;
int i;
rfkill_set_hw_state(priv->rfk[IDEAPAD_DEV_KILLSW], hw_blocked);
for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++)
if (read_ec_data(handle, 0x23, &hw_blocked))
return;
hw_blocked = !hw_blocked;
for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++)
if (priv->rfk[i])
rfkill_set_hw_state(priv->rfk[i], hw_blocked);
if (hw_blocked)
return;
for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++)
if (priv->rfk[i])
rfkill_set_sw_state(priv->rfk[i], !ideapad_dev_get_state(i));
}
static int ideapad_register_rfkill(struct acpi_device *adevice, int dev)
{
struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
int ret;
unsigned long sw_blocked;
priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev-1].name, &adevice->dev,
ideapad_rfk_data[dev-1].type, &ideapad_rfk_ops,
priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name, &adevice->dev,
ideapad_rfk_data[dev].type, &ideapad_rfk_ops,
(void *)(long)dev);
if (!priv->rfk[dev])
return -ENOMEM;
if (read_ec_data(ideapad_priv->handle, ideapad_rfk_data[dev].opcode-1,
&sw_blocked)) {
rfkill_init_sw_state(priv->rfk[dev], 0);
} else {
sw_blocked = !sw_blocked;
rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
}
ret = rfkill_register(priv->rfk[dev]);
if (ret) {
rfkill_destroy(priv->rfk[dev]);