diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.3/0004-MIPS-lantiq-make-irq.c-support-the-FALC-ON.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.3/0004-MIPS-lantiq-make-irq.c-support-the-FALC-ON.patch | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.3/0004-MIPS-lantiq-make-irq.c-support-the-FALC-ON.patch b/target/linux/lantiq/patches-3.3/0004-MIPS-lantiq-make-irq.c-support-the-FALC-ON.patch new file mode 100644 index 0000000000..f313ff30dc --- /dev/null +++ b/target/linux/lantiq/patches-3.3/0004-MIPS-lantiq-make-irq.c-support-the-FALC-ON.patch @@ -0,0 +1,73 @@ +From 9eabaa2969af9aa157d50b7cfbb447f65db95f06 Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Thu, 11 Aug 2011 12:25:55 +0200 +Subject: [PATCH 04/70] MIPS: lantiq: make irq.c support the FALC-ON + +There are minor differences in how irqs work on xway and falcon socs. +Xway needs 2 quirks that we need to disable for falcon to also work with +this code. + +* EBU irq does not need to send a special ack to the EBU +* The EIU does not exist + +Signed-off-by: Thomas Langer <thomas.langer@lantiq.com> +Signed-off-by: John Crispin <blogic@openwrt.org> +--- + arch/mips/lantiq/irq.c | 24 +++++++++++++----------- + 1 files changed, 13 insertions(+), 11 deletions(-) + +diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c +index d673731..f56bcce 100644 +--- a/arch/mips/lantiq/irq.c ++++ b/arch/mips/lantiq/irq.c +@@ -195,7 +195,7 @@ static void ltq_hw_irqdispatch(int module) + do_IRQ((int)irq + INT_NUM_IM0_IRL0 + (INT_NUM_IM_OFFSET * module)); + + /* if this is a EBU irq, we need to ack it or get a deadlock */ +- if ((irq == LTQ_ICU_EBU_IRQ) && (module == 0)) ++ if ((irq == LTQ_ICU_EBU_IRQ) && (module == 0) && LTQ_EBU_PCC_ISTAT) + ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_PCC_ISTAT) | 0x10, + LTQ_EBU_PCC_ISTAT); + } +@@ -259,17 +259,19 @@ void __init arch_init_irq(void) + if (!ltq_icu_membase) + panic("Failed to remap icu memory"); + +- if (insert_resource(&iomem_resource, <q_eiu_resource) < 0) +- panic("Failed to insert eiu memory"); ++ if (LTQ_EIU_BASE_ADDR) { ++ if (insert_resource(&iomem_resource, <q_eiu_resource) < 0) ++ panic("Failed to insert eiu memory\n"); + +- if (request_mem_region(ltq_eiu_resource.start, +- resource_size(<q_eiu_resource), "eiu") < 0) +- panic("Failed to request eiu memory"); ++ if (request_mem_region(ltq_eiu_resource.start, ++ resource_size(<q_eiu_resource), "eiu") < 0) ++ panic("Failed to request eiu memory\n"); + +- ltq_eiu_membase = ioremap_nocache(ltq_eiu_resource.start, ++ ltq_eiu_membase = ioremap_nocache(ltq_eiu_resource.start, + resource_size(<q_eiu_resource)); +- if (!ltq_eiu_membase) +- panic("Failed to remap eiu memory"); ++ if (!ltq_eiu_membase) ++ panic("Failed to remap eiu memory\n"); ++ } + + /* make sure all irqs are turned off by default */ + for (i = 0; i < 5; i++) +@@ -295,8 +297,8 @@ void __init arch_init_irq(void) + + for (i = INT_NUM_IRQ0; + i <= (INT_NUM_IRQ0 + (5 * INT_NUM_IM_OFFSET)); i++) +- if ((i == LTQ_EIU_IR0) || (i == LTQ_EIU_IR1) || +- (i == LTQ_EIU_IR2)) ++ if (((i == LTQ_EIU_IR0) || (i == LTQ_EIU_IR1) || ++ (i == LTQ_EIU_IR2)) && LTQ_EIU_BASE_ADDR) + irq_set_chip_and_handler(i, <q_eiu_type, + handle_level_irq); + /* EIU3-5 only exist on ar9 and vr9 */ +-- +1.7.9.1 + |