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-rw-r--r--drivers/platform/x86/thinkpad_acpi.c59
1 files changed, 55 insertions, 4 deletions
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index b2c5913..27d709b 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -222,6 +222,7 @@ struct ibm_struct {
void (*exit) (void);
void (*resume) (void);
void (*suspend) (pm_message_t state);
+ void (*shutdown) (void);
struct list_head all_drivers;
@@ -759,6 +760,18 @@ static int tpacpi_resume_handler(struct platform_device *pdev)
return 0;
}
+static void tpacpi_shutdown_handler(struct platform_device *pdev)
+{
+ struct ibm_struct *ibm, *itmp;
+
+ list_for_each_entry_safe(ibm, itmp,
+ &tpacpi_all_drivers,
+ all_drivers) {
+ if (ibm->shutdown)
+ (ibm->shutdown)();
+ }
+}
+
static struct platform_driver tpacpi_pdriver = {
.driver = {
.name = TPACPI_DRVR_NAME,
@@ -766,6 +779,7 @@ static struct platform_driver tpacpi_pdriver = {
},
.suspend = tpacpi_suspend_handler,
.resume = tpacpi_resume_handler,
+ .shutdown = tpacpi_shutdown_handler,
};
static struct platform_driver tpacpi_hwmon_pdriver = {
@@ -957,7 +971,22 @@ static int __init tpacpi_new_rfkill(const unsigned int id,
int (*get_state)(void *, enum rfkill_state *))
{
int res;
- enum rfkill_state initial_state;
+ enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED;
+
+ res = get_state(NULL, &initial_state);
+ if (res < 0) {
+ printk(TPACPI_ERR
+ "failed to read initial state for %s, error %d; "
+ "will turn radio off\n", name, res);
+ } else {
+ /* try to set the initial state as the default for the rfkill
+ * type, since we ask the firmware to preserve it across S5 in
+ * NVRAM */
+ rfkill_set_default(rfktype,
+ (initial_state == RFKILL_STATE_UNBLOCKED) ?
+ RFKILL_STATE_UNBLOCKED :
+ RFKILL_STATE_SOFT_BLOCKED);
+ }
*rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
if (!*rfk) {
@@ -969,9 +998,7 @@ static int __init tpacpi_new_rfkill(const unsigned int id,
(*rfk)->name = name;
(*rfk)->get_state = get_state;
(*rfk)->toggle_radio = toggle_radio;
-
- if (!get_state(NULL, &initial_state))
- (*rfk)->state = initial_state;
+ (*rfk)->state = initial_state;
res = rfkill_register(*rfk);
if (res < 0) {
@@ -2943,8 +2970,19 @@ static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
}
+static void bluetooth_shutdown(void)
+{
+ /* Order firmware to save current state to NVRAM */
+ if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
+ TP_ACPI_BLTH_SAVE_STATE))
+ printk(TPACPI_NOTICE
+ "failed to save bluetooth state to NVRAM\n");
+}
+
static void bluetooth_exit(void)
{
+ bluetooth_shutdown();
+
if (tpacpi_bluetooth_rfkill)
rfkill_unregister(tpacpi_bluetooth_rfkill);
@@ -3050,6 +3088,7 @@ static struct ibm_struct bluetooth_driver_data = {
.write = bluetooth_write,
.exit = bluetooth_exit,
.suspend = bluetooth_suspend,
+ .shutdown = bluetooth_shutdown,
};
/*************************************************************************
@@ -3207,8 +3246,19 @@ static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
}
+static void wan_shutdown(void)
+{
+ /* Order firmware to save current state to NVRAM */
+ if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
+ TP_ACPI_WGSV_SAVE_STATE))
+ printk(TPACPI_NOTICE
+ "failed to save WWAN state to NVRAM\n");
+}
+
static void wan_exit(void)
{
+ wan_shutdown();
+
if (tpacpi_wan_rfkill)
rfkill_unregister(tpacpi_wan_rfkill);
@@ -3312,6 +3362,7 @@ static struct ibm_struct wan_driver_data = {
.write = wan_write,
.exit = wan_exit,
.suspend = wan_suspend,
+ .shutdown = wan_shutdown,
};
/*************************************************************************
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