ar71xx: add support for linux 4.4

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48563

1 files changed, 102 insertions, 0 deletions

diff --git a/target/linux/ar71xx/patches-4.4/630-MIPS-ath79-fix-chained-irq-disable.patch b/target/linux/ar71xx/patches-4.4/630-MIPS-ath79-fix-chained-irq-disable.patch
new file mode 100644
index 0000000000..63b91ddc0e
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.4/630-MIPS-ath79-fix-chained-irq-disable.patch
@@ -0,0 +1,102 @@
+--- a/arch/mips/ath79/irq.c
++++ b/arch/mips/ath79/irq.c
+@@ -26,6 +26,9 @@
+ #include "common.h"
+ #include "machtypes.h"
+ 
++static struct irq_chip ip2_chip;
++static struct irq_chip ip3_chip;
++
+ static void ath79_misc_irq_handler(struct irq_desc *desc)
+ {
+ 	void __iomem *base = ath79_reset_base;
+@@ -145,8 +148,7 @@ static void ar934x_ip2_irq_init(void)
+ 
+ 	for (i = ATH79_IP2_IRQ_BASE;
+ 	     i < ATH79_IP2_IRQ_BASE + ATH79_IP2_IRQ_COUNT; i++)
+-		irq_set_chip_and_handler(i, &dummy_irq_chip,
+-					 handle_level_irq);
++		irq_set_chip_and_handler(i, &ip2_chip, handle_level_irq);
+ 
+ 	irq_set_chained_handler(ATH79_CPU_IRQ(2), ar934x_ip2_irq_dispatch);
+ }
+@@ -174,7 +176,7 @@ static void qca953x_irq_init(void)
+ 
+ 	for (i = ATH79_IP2_IRQ_BASE;
+ 	     i < ATH79_IP2_IRQ_BASE + ATH79_IP2_IRQ_COUNT; i++)
+-		irq_set_chip_and_handler(i, &dummy_irq_chip, handle_level_irq);
++		irq_set_chip_and_handler(i, &ip2_chip, handle_level_irq);
+ 
+ 	irq_set_chained_handler(ATH79_CPU_IRQ(2), qca953x_ip2_irq_dispatch);
+ }
+@@ -238,15 +240,13 @@ static void qca955x_irq_init(void)
+ 
+ 	for (i = ATH79_IP2_IRQ_BASE;
+ 	     i < ATH79_IP2_IRQ_BASE + ATH79_IP2_IRQ_COUNT; i++)
+-		irq_set_chip_and_handler(i, &dummy_irq_chip,
+-					 handle_level_irq);
++		irq_set_chip_and_handler(i, &ip2_chip, handle_level_irq);
+ 
+ 	irq_set_chained_handler(ATH79_CPU_IRQ(2), qca955x_ip2_irq_dispatch);
+ 
+ 	for (i = ATH79_IP3_IRQ_BASE;
+ 	     i < ATH79_IP3_IRQ_BASE + ATH79_IP3_IRQ_COUNT; i++)
+-		irq_set_chip_and_handler(i, &dummy_irq_chip,
+-					 handle_level_irq);
++		irq_set_chip_and_handler(i, &ip3_chip, handle_level_irq);
+ 
+ 	irq_set_chained_handler(ATH79_CPU_IRQ(3), qca955x_ip3_irq_dispatch);
+ }
+@@ -331,13 +331,13 @@ static void qca956x_irq_init(void)
+ 
+ 	for (i = ATH79_IP2_IRQ_BASE;
+ 	     i < ATH79_IP2_IRQ_BASE + ATH79_IP2_IRQ_COUNT; i++)
+-		irq_set_chip_and_handler(i, &dummy_irq_chip, handle_level_irq);
++		irq_set_chip_and_handler(i, &ip2_chip, handle_level_irq);
+ 
+ 	irq_set_chained_handler(ATH79_CPU_IRQ(2), qca956x_ip2_irq_dispatch);
+ 
+ 	for (i = ATH79_IP3_IRQ_BASE;
+ 	     i < ATH79_IP3_IRQ_BASE + ATH79_IP3_IRQ_COUNT; i++)
+-		irq_set_chip_and_handler(i, &dummy_irq_chip, handle_level_irq);
++		irq_set_chip_and_handler(i, &ip3_chip, handle_level_irq);
+ 
+ 	irq_set_chained_handler(ATH79_CPU_IRQ(3), qca956x_ip3_irq_dispatch);
+ 
+@@ -463,8 +463,36 @@ IRQCHIP_DECLARE(ar79_cpu_intc, "qca,ar71
+ 
+ #endif
+ 
++static void ath79_ip2_disable(struct irq_data *data)
++{
++	disable_irq(ATH79_CPU_IRQ(2));
++}
++
++static void ath79_ip2_enable(struct irq_data *data)
++{
++	enable_irq(ATH79_CPU_IRQ(2));
++}
++
++static void ath79_ip3_disable(struct irq_data *data)
++{
++	disable_irq(ATH79_CPU_IRQ(3));
++}
++
++static void ath79_ip3_enable(struct irq_data *data)
++{
++	enable_irq(ATH79_CPU_IRQ(3));
++}
++
+ void __init arch_init_irq(void)
+ {
++	ip2_chip = dummy_irq_chip;
++	ip2_chip.irq_disable = ath79_ip2_disable;
++	ip2_chip.irq_enable = ath79_ip2_enable;
++
++	ip3_chip = dummy_irq_chip;
++	ip3_chip.irq_disable = ath79_ip3_disable;
++	ip3_chip.irq_enable = ath79_ip3_enable;
++
+ 	if (mips_machtype == ATH79_MACH_GENERIC_OF) {
+ 		irqchip_init();
+ 		return;