mediatek: add support for the new MT7623 Arm SoC

the support is still WIP. next steps are to make the pmic and ethernet work.
this is the first commit to make sure nothing gets lost.

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@47354 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 129 insertions, 0 deletions

diff --git a/target/linux/mediatek/patches/0018-thermal-of-always-set-sensor-related-callbacks.patch b/target/linux/mediatek/patches/0018-thermal-of-always-set-sensor-related-callbacks.patch
new file mode 100644
index 0000000000..e47e8a27f0
--- /dev/null
+++ b/target/linux/mediatek/patches/0018-thermal-of-always-set-sensor-related-callbacks.patch
@@ -0,0 +1,129 @@
+From 8c9c4ed500e92c10dc4965dcd00692b3102a328a Mon Sep 17 00:00:00 2001
+From: Sascha Hauer <s.hauer@pengutronix.de>
+Date: Wed, 13 May 2015 10:52:37 +0200
+Subject: [PATCH 18/76] thermal: of: always set sensor related callbacks
+
+Now that the thermal core treats -ENOSYS like the callbacks were
+not present at all we no longer have to overwrite the ops during
+runtime but instead can always set them and return -ENOSYS if no
+sensor is registered.
+
+Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
+---
+ drivers/thermal/of-thermal.c |   33 +++++++++++++--------------------
+ 1 file changed, 13 insertions(+), 20 deletions(-)
+
+diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
+index c84404d..b9c35bd 100644
+--- a/drivers/thermal/of-thermal.c
++++ b/drivers/thermal/of-thermal.c
+@@ -91,7 +91,7 @@ static int of_thermal_get_temp(struct thermal_zone_device *tz,
+ {
+ 	struct __thermal_zone *data = tz->devdata;
+ 
+-	if (!data->ops->get_temp)
++	if (!data->ops)
+ 		return -EINVAL;
+ 
+ 	return data->ops->get_temp(data->sensor_data, temp);
+@@ -178,7 +178,7 @@ static int of_thermal_set_emul_temp(struct thermal_zone_device *tz,
+ 	struct __thermal_zone *data = tz->devdata;
+ 
+ 	if (!data->ops || !data->ops->set_emul_temp)
+-		return -EINVAL;
++		return -ENOSYS;
+ 
+ 	return data->ops->set_emul_temp(data->sensor_data, temp);
+ }
+@@ -189,8 +189,8 @@ static int of_thermal_get_trend(struct thermal_zone_device *tz, int trip,
+ 	struct __thermal_zone *data = tz->devdata;
+ 	int r;
+ 
+-	if (!data->ops->get_trend)
+-		return -EINVAL;
++	if (!data->ops || !data->ops->get_trend)
++		return -ENOSYS;
+ 
+ 	r = data->ops->get_trend(data->sensor_data, trip, trend);
+ 	if (r)
+@@ -366,6 +366,10 @@ static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
+ }
+ 
+ static struct thermal_zone_device_ops of_thermal_ops = {
++	.get_temp = of_thermal_get_temp,
++	.get_trend = of_thermal_get_trend,
++	.set_emul_temp = of_thermal_set_emul_temp,
++
+ 	.get_mode = of_thermal_get_mode,
+ 	.set_mode = of_thermal_set_mode,
+ 
+@@ -399,13 +403,13 @@ thermal_zone_of_add_sensor(struct device_node *zone,
+ 	if (!ops)
+ 		return ERR_PTR(-EINVAL);
+ 
++	if (!ops->get_temp)
++		return ERR_PTR(-EINVAL);
++
+ 	mutex_lock(&tzd->lock);
+ 	tz->ops = ops;
+ 	tz->sensor_data = data;
+ 
+-	tzd->ops->get_temp = of_thermal_get_temp;
+-	tzd->ops->get_trend = of_thermal_get_trend;
+-	tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
+ 	mutex_unlock(&tzd->lock);
+ 
+ 	return tzd;
+@@ -535,9 +539,6 @@ void thermal_zone_of_sensor_unregister(struct device *dev,
+ 		return;
+ 
+ 	mutex_lock(&tzd->lock);
+-	tzd->ops->get_temp = NULL;
+-	tzd->ops->get_trend = NULL;
+-	tzd->ops->set_emul_temp = NULL;
+ 
+ 	tz->ops = NULL;
+ 	tz->sensor_data = NULL;
+@@ -845,7 +846,6 @@ int __init of_parse_thermal_zones(void)
+ {
+ 	struct device_node *np, *child;
+ 	struct __thermal_zone *tz;
+-	struct thermal_zone_device_ops *ops;
+ 
+ 	np = of_find_node_by_name(NULL, "thermal-zones");
+ 	if (!np) {
+@@ -869,29 +869,22 @@ int __init of_parse_thermal_zones(void)
+ 			continue;
+ 		}
+ 
+-		ops = kmemdup(&of_thermal_ops, sizeof(*ops), GFP_KERNEL);
+-		if (!ops)
+-			goto exit_free;
+-
+ 		tzp = kzalloc(sizeof(*tzp), GFP_KERNEL);
+-		if (!tzp) {
+-			kfree(ops);
++		if (!tzp)
+ 			goto exit_free;
+-		}
+ 
+ 		/* No hwmon because there might be hwmon drivers registering */
+ 		tzp->no_hwmon = true;
+ 
+ 		zone = thermal_zone_device_register(child->name, tz->ntrips,
+ 						    0, tz,
+-						    ops, tzp,
++						    &of_thermal_ops, tzp,
+ 						    tz->passive_delay,
+ 						    tz->polling_delay);
+ 		if (IS_ERR(zone)) {
+ 			pr_err("Failed to build %s zone %ld\n", child->name,
+ 			       PTR_ERR(zone));
+ 			kfree(tzp);
+-			kfree(ops);
+ 			of_thermal_free_zone(tz);
+ 			/* attempting to build remaining zones still */
+ 		}
+-- 
+1.7.10.4
+