Merge "msm: kgsl: Add disable-wake-on-touch devicetree property" into msm-4.4

Documentation/devicetree/bindings/gpu/adreno.txt

@@ -93,6 +93,7 @@ Optional Properties:
 - qcom,chipid:		   If it exists this property is used to replace
 			   the chip identification read from the GPU hardware.
 			   This is used to override faulty hardware readings.
+- qcom,disable-wake-on-touch:   Boolean. Disables the GPU power up on a touch input event.
 - qcom,disable-busy-time-burst:
 				Boolean. Disables the busy time burst to avoid switching
 				of power level for large frames based on the busy time limit.

drivers/gpu/msm/adreno.c

@@ -902,6 +902,9 @@ static int adreno_of_get_power(struct adreno_device *adreno_dev,
 	device->pwrctrl.bus_control = of_property_read_bool(node,
 		"qcom,bus-control");
 
+	device->pwrctrl.input_disable = of_property_read_bool(node,
+		"qcom,disable-wake-on-touch");
+
 	return 0;
 }
 
@@ -1016,15 +1019,19 @@ static int adreno_probe(struct platform_device *pdev)
 	/* Initialize coresight for the target */
 	adreno_coresight_init(adreno_dev);
 
-	adreno_input_handler.private = device;
-
 #ifdef CONFIG_INPUT
-	/*
-	 * It isn't fatal if we cannot register the input handler.  Sad,
-	 * perhaps, but not fatal
-	 */
-	if (input_register_handler(&adreno_input_handler))
-		KGSL_DRV_ERR(device, "Unable to register the input handler\n");
+	if (!device->pwrctrl.input_disable) {
+		adreno_input_handler.private = device;
+		/*
+		 * It isn't fatal if we cannot register the input handler.  Sad,
+		 * perhaps, but not fatal
+		 */
+		if (input_register_handler(&adreno_input_handler)) {
+			adreno_input_handler.private = NULL;
+			KGSL_DRV_ERR(device,
+				"Unable to register the input handler\n");
+		}
+	}
 #endif
 out:
 	if (status) {
@@ -1076,7 +1083,8 @@ static int adreno_remove(struct platform_device *pdev)
 	_adreno_free_memories(adreno_dev);
 
 #ifdef CONFIG_INPUT
-	input_unregister_handler(&adreno_input_handler);
+	if (adreno_input_handler.private)
+		input_unregister_handler(&adreno_input_handler);
 #endif
 	adreno_sysfs_close(adreno_dev);
 

drivers/gpu/msm/kgsl_pwrctrl.h

@@ -146,6 +146,7 @@ struct kgsl_regulator {
  * @pm_qos_req_dma - the power management quality of service structure
  * @pm_qos_active_latency - allowed CPU latency in microseconds when active
  * @pm_qos_cpu_mask_latency - allowed CPU mask latency in microseconds
+ * @input_disable - To disable GPU wakeup on touch input event
  * @pm_qos_wakeup_latency - allowed CPU latency in microseconds during wakeup
  * @bus_control - true if the bus calculation is independent
  * @bus_mod - modifier from the current power level for the bus vote
@@ -203,6 +204,7 @@ struct kgsl_pwrctrl {
 	unsigned int pm_qos_active_latency;
 	unsigned int pm_qos_cpu_mask_latency;
 	unsigned int pm_qos_wakeup_latency;
+	bool input_disable;
 	bool bus_control;
 	int bus_mod;
 	unsigned int bus_percent_ab;