Merge branch 'thinkpad' into test

1 files changed, 61 insertions, 2 deletions

diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 62aebaa85913..4db1cf9078d9 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -159,7 +159,6 @@ enum {
 #define TPACPI_DEBUG  KERN_DEBUG  TPACPI_LOG
 
 #define TPACPI_DBG_ALL		0xffff
-#define TPACPI_DBG_ALL		0xffff
 #define TPACPI_DBG_INIT		0x0001
 #define TPACPI_DBG_EXIT		0x0002
 #define dbg_printk(a_dbg_level, format, arg...) \
@@ -582,7 +581,8 @@ static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
 
 	ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
 	if (!ibm->acpi->driver) {
-		printk(TPACPI_ERR "kzalloc(ibm->driver) failed\n");
+		printk(TPACPI_ERR
+		       "failed to allocate memory for ibm->acpi->driver\n");
 		return -ENOMEM;
 	}
 
@@ -838,6 +838,13 @@ static int parse_strtoul(const char *buf,
 	return 0;
 }
 
+static void tpacpi_disable_brightness_delay(void)
+{
+	if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
+		printk(TPACPI_NOTICE
+			"ACPI backlight control delay disabled\n");
+}
+
 static int __init tpacpi_query_bcl_levels(acpi_handle handle)
 {
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
@@ -2139,6 +2146,8 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 	if (!tp_features.hotkey)
 		return 1;
 
+	tpacpi_disable_brightness_delay();
+
 	hotkey_dev_attributes = create_attr_set(13, NULL);
 	if (!hotkey_dev_attributes)
 		return -ENOMEM;
@@ -2512,6 +2521,8 @@ static void hotkey_suspend(pm_message_t state)
 
 static void hotkey_resume(void)
 {
+	tpacpi_disable_brightness_delay();
+
 	if (hotkey_mask_get())
 		printk(TPACPI_ERR
 		       "error while trying to read hot key mask "
@@ -5983,6 +5994,52 @@ static void fan_exit(void)
 	flush_workqueue(tpacpi_wq);
 }
 
+static void fan_suspend(pm_message_t state)
+{
+	if (!fan_control_allowed)
+		return;
+
+	/* Store fan status in cache */
+	fan_get_status_safe(NULL);
+	if (tp_features.fan_ctrl_status_undef)
+		fan_control_desired_level = TP_EC_FAN_AUTO;
+}
+
+static void fan_resume(void)
+{
+	u8 saved_fan_level;
+	u8 current_level = 7;
+	bool do_set = false;
+
+	/* DSDT *always* updates status on resume */
+	tp_features.fan_ctrl_status_undef = 0;
+
+	saved_fan_level = fan_control_desired_level;
+	if (!fan_control_allowed ||
+	    (fan_get_status_safe(&current_level) < 0))
+		return;
+
+	switch (fan_control_access_mode) {
+	case TPACPI_FAN_WR_ACPI_SFAN:
+		do_set = (saved_fan_level > current_level);
+		break;
+	case TPACPI_FAN_WR_ACPI_FANS:
+	case TPACPI_FAN_WR_TPEC:
+		do_set = ((saved_fan_level & TP_EC_FAN_FULLSPEED) ||
+			  (saved_fan_level == 7 &&
+			   !(current_level & TP_EC_FAN_FULLSPEED)));
+		break;
+	default:
+		return;
+	}
+	if (do_set) {
+		printk(TPACPI_NOTICE
+			"restoring fan level to 0x%02x\n",
+			saved_fan_level);
+		fan_set_level_safe(saved_fan_level);
+	}
+}
+
 static int fan_read(char *p)
 {
 	int len = 0;
@@ -6174,6 +6231,8 @@ static struct ibm_struct fan_driver_data = {
 	.read = fan_read,
 	.write = fan_write,
 	.exit = fan_exit,
+	.suspend = fan_suspend,
+	.resume = fan_resume,
 };
 
 /****************************************************************************