lantiq: add 3.18 support

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

SVN-Revision: 44348

1 files changed, 90 insertions, 0 deletions

diff --git a/target/linux/lantiq/patches-3.18/0005-MIPS-lantiq-add-reset-controller-api-support.patch b/target/linux/lantiq/patches-3.18/0005-MIPS-lantiq-add-reset-controller-api-support.patch
new file mode 100644
index 0000000..3129019
--- /dev/null
+++ b/target/linux/lantiq/patches-3.18/0005-MIPS-lantiq-add-reset-controller-api-support.patch
@@ -0,0 +1,90 @@
+From 223f1c46e109a8420765aee099a5d1dc4ab7ee98 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Tue, 3 Sep 2013 13:18:12 +0200
+Subject: [PATCH 05/36] MIPS: lantiq: add reset-controller api support
+
+Add a reset-controller binding for the reset registers found on the lantiq
+SoC.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ arch/mips/lantiq/xway/reset.c |   61 +++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 61 insertions(+)
+
+--- a/arch/mips/lantiq/xway/reset.c
++++ b/arch/mips/lantiq/xway/reset.c
+@@ -14,6 +14,7 @@
+ #include <linux/delay.h>
+ #include <linux/of_address.h>
+ #include <linux/of_platform.h>
++#include <linux/reset-controller.h>
+ 
+ #include <asm/reboot.h>
+ 
+@@ -113,6 +114,66 @@ void ltq_reset_once(unsigned int module,
+ 	ltq_rcu_w32(ltq_rcu_r32(RCU_RST_REQ) & ~module, RCU_RST_REQ);
+ }
+ 
++static int ltq_assert_device(struct reset_controller_dev *rcdev,
++				unsigned long id)
++{
++	u32 val;
++
++	if (id < 8)
++		return -1;
++
++	val = ltq_rcu_r32(RCU_RST_REQ);
++	val |= BIT(id);
++	ltq_rcu_w32(val, RCU_RST_REQ);
++
++	return 0;
++}
++
++static int ltq_deassert_device(struct reset_controller_dev *rcdev,
++				  unsigned long id)
++{
++	u32 val;
++
++	if (id < 8)
++		return -1;
++
++	val = ltq_rcu_r32(RCU_RST_REQ);
++	val &= ~BIT(id);
++	ltq_rcu_w32(val, RCU_RST_REQ);
++
++	return 0;
++}
++
++static int ltq_reset_device(struct reset_controller_dev *rcdev,
++			       unsigned long id)
++{
++	ltq_assert_device(rcdev, id);
++	return ltq_deassert_device(rcdev, id);
++}
++
++static struct reset_control_ops reset_ops = {
++	.reset = ltq_reset_device,
++	.assert = ltq_assert_device,
++	.deassert = ltq_deassert_device,
++};
++
++static struct reset_controller_dev reset_dev = {
++	.ops			= &reset_ops,
++	.owner			= THIS_MODULE,
++	.nr_resets		= 32,
++	.of_reset_n_cells	= 1,
++};
++
++void ltq_rst_init(void)
++{
++	reset_dev.of_node = of_find_compatible_node(NULL, NULL,
++						"lantiq,xway-reset");
++	if (!reset_dev.of_node)
++		pr_err("Failed to find reset controller node");
++	else
++		reset_controller_register(&reset_dev);
++}
++
+ static void ltq_machine_restart(char *command)
+ {
+ 	local_irq_disable();