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-rw-r--r--target/linux/lantiq/patches-3.14/0005-MIPS-lantiq-add-reset-controller-api-support.patch95
1 files changed, 95 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.14/0005-MIPS-lantiq-add-reset-controller-api-support.patch b/target/linux/lantiq/patches-3.14/0005-MIPS-lantiq-add-reset-controller-api-support.patch
new file mode 100644
index 0000000000..36f6410686
--- /dev/null
+++ b/target/linux/lantiq/patches-3.14/0005-MIPS-lantiq-add-reset-controller-api-support.patch
@@ -0,0 +1,95 @@
+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 05/31] 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(+)
+
+diff --git a/arch/mips/lantiq/xway/reset.c b/arch/mips/lantiq/xway/reset.c
+index 1fa0f17..a1e06b7 100644
+--- 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, ulong u)
+ 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();
+--
+1.7.10.4
+