diff options
Diffstat (limited to 'target/linux/ath79/patches-4.19/0027-MIPS-ath79-drop-legacy-IRQ-code.patch')
| -rw-r--r-- | target/linux/ath79/patches-4.19/0027-MIPS-ath79-drop-legacy-IRQ-code.patch | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/target/linux/ath79/patches-4.19/0027-MIPS-ath79-drop-legacy-IRQ-code.patch b/target/linux/ath79/patches-4.19/0027-MIPS-ath79-drop-legacy-IRQ-code.patch new file mode 100644 index 0000000000..79f003d2ea --- /dev/null +++ b/target/linux/ath79/patches-4.19/0027-MIPS-ath79-drop-legacy-IRQ-code.patch @@ -0,0 +1,233 @@ +From 3765b1f79593a0a9098ed15e48074c95403a53ee Mon Sep 17 00:00:00 2001 +From: John Crispin <john@phrozen.org> +Date: Sat, 23 Jun 2018 15:05:08 +0200 +Subject: [PATCH 27/33] MIPS: ath79: drop legacy IRQ code + +With the target now being fully OF based, we can drop the legacy IRQ code. +All IRQs are now handled via the new irqchip drivers. + +Signed-off-by: John Crispin <john@phrozen.org> +--- + arch/mips/ath79/Makefile | 2 +- + arch/mips/ath79/irq.c | 169 ------------------------------- + arch/mips/ath79/setup.c | 6 ++ + arch/mips/include/asm/mach-ath79/ath79.h | 4 - + 4 files changed, 7 insertions(+), 174 deletions(-) + delete mode 100644 arch/mips/ath79/irq.c + +--- a/arch/mips/ath79/Makefile ++++ b/arch/mips/ath79/Makefile +@@ -8,7 +8,7 @@ + # under the terms of the GNU General Public License version 2 as published + # by the Free Software Foundation. + +-obj-y := prom.o setup.o irq.o common.o clock.o ++obj-y := prom.o setup.o common.o clock.o + + obj-$(CONFIG_EARLY_PRINTK) += early_printk.o + obj-$(CONFIG_PCI) += pci.o +--- a/arch/mips/ath79/irq.c ++++ /dev/null +@@ -1,169 +0,0 @@ +-/* +- * Atheros AR71xx/AR724x/AR913x specific interrupt handling +- * +- * Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com> +- * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org> +- * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> +- * +- * Parts of this file are based on Atheros' 2.6.15/2.6.31 BSP +- * +- * This program is free software; you can redistribute it and/or modify it +- * under the terms of the GNU General Public License version 2 as published +- * by the Free Software Foundation. +- */ +- +-#include <linux/kernel.h> +-#include <linux/init.h> +-#include <linux/interrupt.h> +-#include <linux/irqchip.h> +-#include <linux/of_irq.h> +- +-#include <asm/irq_cpu.h> +-#include <asm/mipsregs.h> +- +-#include <asm/mach-ath79/ath79.h> +-#include <asm/mach-ath79/ar71xx_regs.h> +-#include "common.h" +-#include "machtypes.h" +- +- +-static void ar934x_ip2_irq_dispatch(struct irq_desc *desc) +-{ +- u32 status; +- +- status = ath79_reset_rr(AR934X_RESET_REG_PCIE_WMAC_INT_STATUS); +- +- if (status & AR934X_PCIE_WMAC_INT_PCIE_ALL) { +- ath79_ddr_wb_flush(3); +- generic_handle_irq(ATH79_IP2_IRQ(0)); +- } else if (status & AR934X_PCIE_WMAC_INT_WMAC_ALL) { +- ath79_ddr_wb_flush(4); +- generic_handle_irq(ATH79_IP2_IRQ(1)); +- } else { +- spurious_interrupt(); +- } +-} +- +-static void ar934x_ip2_irq_init(void) +-{ +- int i; +- +- 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_chained_handler(ATH79_CPU_IRQ(2), ar934x_ip2_irq_dispatch); +-} +- +-static void qca955x_ip2_irq_dispatch(struct irq_desc *desc) +-{ +- u32 status; +- +- status = ath79_reset_rr(QCA955X_RESET_REG_EXT_INT_STATUS); +- status &= QCA955X_EXT_INT_PCIE_RC1_ALL | QCA955X_EXT_INT_WMAC_ALL; +- +- if (status == 0) { +- spurious_interrupt(); +- return; +- } +- +- if (status & QCA955X_EXT_INT_PCIE_RC1_ALL) { +- /* TODO: flush DDR? */ +- generic_handle_irq(ATH79_IP2_IRQ(0)); +- } +- +- if (status & QCA955X_EXT_INT_WMAC_ALL) { +- /* TODO: flush DDR? */ +- generic_handle_irq(ATH79_IP2_IRQ(1)); +- } +-} +- +-static void qca955x_ip3_irq_dispatch(struct irq_desc *desc) +-{ +- u32 status; +- +- status = ath79_reset_rr(QCA955X_RESET_REG_EXT_INT_STATUS); +- status &= QCA955X_EXT_INT_PCIE_RC2_ALL | +- QCA955X_EXT_INT_USB1 | +- QCA955X_EXT_INT_USB2; +- +- if (status == 0) { +- spurious_interrupt(); +- return; +- } +- +- if (status & QCA955X_EXT_INT_USB1) { +- /* TODO: flush DDR? */ +- generic_handle_irq(ATH79_IP3_IRQ(0)); +- } +- +- if (status & QCA955X_EXT_INT_USB2) { +- /* TODO: flush DDR? */ +- generic_handle_irq(ATH79_IP3_IRQ(1)); +- } +- +- if (status & QCA955X_EXT_INT_PCIE_RC2_ALL) { +- /* TODO: flush DDR? */ +- generic_handle_irq(ATH79_IP3_IRQ(2)); +- } +-} +- +-static void qca955x_irq_init(void) +-{ +- int i; +- +- 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_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_chained_handler(ATH79_CPU_IRQ(3), qca955x_ip3_irq_dispatch); +-} +- +-void __init arch_init_irq(void) +-{ +- unsigned irq_wb_chan2 = -1; +- unsigned irq_wb_chan3 = -1; +- bool misc_is_ar71xx; +- +- if (mips_machtype == ATH79_MACH_GENERIC_OF) { +- irqchip_init(); +- return; +- } +- +- if (soc_is_ar71xx() || soc_is_ar724x() || +- soc_is_ar913x() || soc_is_ar933x()) { +- irq_wb_chan2 = 3; +- irq_wb_chan3 = 2; +- } else if (soc_is_ar934x()) { +- irq_wb_chan3 = 2; +- } +- +- ath79_cpu_irq_init(irq_wb_chan2, irq_wb_chan3); +- +- if (soc_is_ar71xx() || soc_is_ar913x()) +- misc_is_ar71xx = true; +- else if (soc_is_ar724x() || +- soc_is_ar933x() || +- soc_is_ar934x() || +- soc_is_qca955x()) +- misc_is_ar71xx = false; +- else +- BUG(); +- ath79_misc_irq_init( +- ath79_reset_base + AR71XX_RESET_REG_MISC_INT_STATUS, +- ATH79_CPU_IRQ(6), ATH79_MISC_IRQ_BASE, misc_is_ar71xx); +- +- if (soc_is_ar934x()) +- ar934x_ip2_irq_init(); +- else if (soc_is_qca955x()) +- qca955x_irq_init(); +-} +--- a/arch/mips/ath79/setup.c ++++ b/arch/mips/ath79/setup.c +@@ -19,6 +19,7 @@ + #include <linux/clk.h> + #include <linux/clk-provider.h> + #include <linux/of_fdt.h> ++#include <linux/irqchip.h> + + #include <asm/bootinfo.h> + #include <asm/idle.h> +@@ -311,6 +312,11 @@ void __init plat_time_init(void) + mips_hpt_frequency = cpu_clk_rate / 2; + } + ++void __init arch_init_irq(void) ++{ ++ irqchip_init(); ++} ++ + static int __init ath79_setup(void) + { + if (mips_machtype == ATH79_MACH_GENERIC_OF) +--- a/arch/mips/include/asm/mach-ath79/ath79.h ++++ b/arch/mips/include/asm/mach-ath79/ath79.h +@@ -178,8 +178,4 @@ static inline u32 ath79_reset_rr(unsigne + void ath79_device_reset_set(u32 mask); + void ath79_device_reset_clear(u32 mask); + +-void ath79_cpu_irq_init(unsigned irq_wb_chan2, unsigned irq_wb_chan3); +-void ath79_misc_irq_init(void __iomem *regs, int irq, +- int irq_base, bool is_ar71xx); +- + #endif /* __ASM_MACH_ATH79_H */ |