+++ /dev/null
-From 08b9cad7da5d981d595fe6d76e9675f85e23e688 Mon Sep 17 00:00:00 2001
-From: John Crispin <john@phrozen.org>
-Date: Tue, 6 Mar 2018 09:57:15 +0100
-Subject: [PATCH 25/27] MIPS: ath79: drop irq.c
-
-all IRQ init code will flow via OF based irq chips.
-
-Signed-off-by: John Crispin <john@phrozen.org>
----
- arch/mips/ath79/Makefile | 2 +-
- arch/mips/ath79/irq.c | 285 -----------------------------------------------
- arch/mips/ath79/setup.c | 6 +
- 3 files changed, 7 insertions(+), 286 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
-
---- a/arch/mips/ath79/irq.c
-+++ /dev/null
-@@ -1,285 +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 qca953x_ip2_irq_dispatch(struct irq_desc *desc)
--{
-- u32 status;
--
-- status = ath79_reset_rr(QCA953X_RESET_REG_PCIE_WMAC_INT_STATUS);
--
-- if (status & QCA953X_PCIE_WMAC_INT_PCIE_ALL) {
-- ath79_ddr_wb_flush(3);
-- generic_handle_irq(ATH79_IP2_IRQ(0));
-- } else if (status & QCA953X_PCIE_WMAC_INT_WMAC_ALL) {
-- ath79_ddr_wb_flush(4);
-- generic_handle_irq(ATH79_IP2_IRQ(1));
-- } else {
-- spurious_interrupt();
-- }
--}
--
--static void qca953x_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), qca953x_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);
--}
--
--static void qca956x_ip2_irq_dispatch(struct irq_desc *desc)
--{
-- u32 status;
--
-- status = ath79_reset_rr(QCA956X_RESET_REG_EXT_INT_STATUS);
-- status &= QCA956X_EXT_INT_PCIE_RC1_ALL | QCA956X_EXT_INT_WMAC_ALL;
--
-- if (status == 0) {
-- spurious_interrupt();
-- return;
-- }
--
-- if (status & QCA956X_EXT_INT_PCIE_RC1_ALL) {
-- /* TODO: flush DDR? */
-- generic_handle_irq(ATH79_IP2_IRQ(0));
-- }
--
-- if (status & QCA956X_EXT_INT_WMAC_ALL) {
-- /* TODO: flsuh DDR? */
-- generic_handle_irq(ATH79_IP2_IRQ(1));
-- }
--}
--
--static void qca956x_ip3_irq_dispatch(struct irq_desc *desc)
--{
-- u32 status;
--
-- status = ath79_reset_rr(QCA956X_RESET_REG_EXT_INT_STATUS);
-- status &= QCA956X_EXT_INT_PCIE_RC2_ALL |
-- QCA956X_EXT_INT_USB1 | QCA956X_EXT_INT_USB2;
--
-- if (status == 0) {
-- spurious_interrupt();
-- return;
-- }
--
-- if (status & QCA956X_EXT_INT_USB1) {
-- /* TODO: flush DDR? */
-- generic_handle_irq(ATH79_IP3_IRQ(0));
-- }
--
-- if (status & QCA956X_EXT_INT_USB2) {
-- /* TODO: flush DDR? */
-- generic_handle_irq(ATH79_IP3_IRQ(1));
-- }
--
-- if (status & QCA956X_EXT_INT_PCIE_RC2_ALL) {
-- /* TODO: flush DDR? */
-- generic_handle_irq(ATH79_IP3_IRQ(2));
-- }
--}
--
--static void qca956x_enable_timer_cb(void) {
-- u32 misc;
--
-- misc = ath79_reset_rr(AR71XX_RESET_REG_MISC_INT_ENABLE);
-- misc |= MISC_INT_MIPS_SI_TIMERINT_MASK;
-- ath79_reset_wr(AR71XX_RESET_REG_MISC_INT_ENABLE, misc);
--}
--
--static void qca956x_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), 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_chained_handler(ATH79_CPU_IRQ(3), qca956x_ip3_irq_dispatch);
--
-- /* QCA956x timer init workaround has to be applied right before setting
-- * up the clock. Else, there will be no jiffies */
-- late_time_init = &qca956x_enable_timer_cb;
--}
--
--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() || soc_is_qca953x()) {
-- 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_qca953x() ||
-- soc_is_qca955x() ||
-- soc_is_qca956x() ||
-- soc_is_tp9343())
-- 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_qca953x())
-- qca953x_irq_init();
-- else if (soc_is_qca955x())
-- qca955x_irq_init();
-- else if (soc_is_qca956x() || soc_is_tp9343())
-- qca956x_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>
-@@ -310,6 +311,11 @@ 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)
projects / openwrt / staging / blogic.git / blobdiff