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path: root/drivers/platform/x86/ideapad-laptop.c
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Diffstat (limited to 'drivers/platform/x86/ideapad-laptop.c')
-rw-r--r--drivers/platform/x86/ideapad-laptop.c41
1 files changed, 27 insertions, 14 deletions
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index b4c495a62eec..b0e3a2eef0ac 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -87,6 +87,7 @@ struct ideapad_private {
struct backlight_device *blightdev;
struct dentry *debug;
unsigned long cfg;
+ bool has_hw_rfkill_switch;
};
static bool no_bt_rfkill;
@@ -473,12 +474,14 @@ static struct rfkill_ops ideapad_rfk_ops = {
static void ideapad_sync_rfk_state(struct ideapad_private *priv)
{
- unsigned long hw_blocked;
+ unsigned long hw_blocked = 0;
int i;
- if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
- return;
- hw_blocked = !hw_blocked;
+ if (priv->has_hw_rfkill_switch) {
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
+ return;
+ hw_blocked = !hw_blocked;
+ }
for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
if (priv->rfk[i])
@@ -821,14 +824,17 @@ static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
}
}
-/* Blacklist for devices where the ideapad rfkill interface does not work */
-static struct dmi_system_id rfkill_blacklist[] = {
- /* The Lenovo Yoga 2 11 always reports everything as blocked */
+/*
+ * Some ideapads don't have a hardware rfkill switch, reading VPCCMD_R_RF
+ * always results in 0 on these models, causing ideapad_laptop to wrongly
+ * report all radios as hardware-blocked.
+ */
+static struct dmi_system_id no_hw_rfkill_list[] = {
{
- .ident = "Lenovo Yoga 2 11",
+ .ident = "Lenovo Yoga 2 11 / 13 / Pro",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2 11"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2"),
},
},
{}
@@ -856,6 +862,7 @@ static int ideapad_acpi_add(struct platform_device *pdev)
priv->cfg = cfg;
priv->adev = adev;
priv->platform_device = pdev;
+ priv->has_hw_rfkill_switch = !dmi_check_system(no_hw_rfkill_list);
ret = ideapad_sysfs_init(priv);
if (ret)
@@ -869,11 +876,17 @@ static int ideapad_acpi_add(struct platform_device *pdev)
if (ret)
goto input_failed;
- if (!dmi_check_system(rfkill_blacklist)) {
- for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
- if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
- ideapad_register_rfkill(priv, i);
- }
+ /*
+ * On some models without a hw-switch (the yoga 2 13 at least)
+ * VPCCMD_W_RF must be explicitly set to 1 for the wifi to work.
+ */
+ if (!priv->has_hw_rfkill_switch)
+ write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);
+
+ for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
+ if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
+ ideapad_register_rfkill(priv, i);
+
ideapad_sync_rfk_state(priv);
ideapad_sync_touchpad_state(priv);