diff options
Diffstat (limited to 'target/linux/xburst/patches-2.6.35/004-irq.patch')
| -rw-r--r-- | target/linux/xburst/patches-2.6.35/004-irq.patch | 275 |
1 files changed, 0 insertions, 275 deletions
diff --git a/target/linux/xburst/patches-2.6.35/004-irq.patch b/target/linux/xburst/patches-2.6.35/004-irq.patch deleted file mode 100644 index daed91b533..0000000000 --- a/target/linux/xburst/patches-2.6.35/004-irq.patch +++ /dev/null @@ -1,275 +0,0 @@ -From f6a9c8215a4553357b8a1939fafb2d6dfbacf944 Mon Sep 17 00:00:00 2001 -From: Lars-Peter Clausen <lars@metafoo.de> -Date: Sat, 17 Jul 2010 11:08:43 +0000 -Subject: [PATCH] MIPS: JZ4740: Add IRQ handler code - -Add support for IRQ handling on a JZ4740 SoC. - -Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> -Cc: linux-mips@linux-mips.org -Cc: linux-kernel@vger.kernel.org -Patchwork: https://patchwork.linux-mips.org/patch/1465/ -Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---- - arch/mips/include/asm/mach-jz4740/irq.h | 57 +++++++++++ - arch/mips/jz4740/irq.c | 167 +++++++++++++++++++++++++++++++ - arch/mips/jz4740/irq.h | 21 ++++ - 3 files changed, 245 insertions(+), 0 deletions(-) - create mode 100644 arch/mips/include/asm/mach-jz4740/irq.h - create mode 100644 arch/mips/jz4740/irq.c - create mode 100644 arch/mips/jz4740/irq.h - ---- /dev/null -+++ b/arch/mips/include/asm/mach-jz4740/irq.h -@@ -0,0 +1,57 @@ -+/* -+ * Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de> -+ * JZ4740 IRQ definitions -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of the GNU General Public License as published by the -+ * Free Software Foundation; either version 2 of the License, or (at your -+ * option) any later version. -+ * -+ * You should have received a copy of the GNU General Public License along -+ * with this program; if not, write to the Free Software Foundation, Inc., -+ * 675 Mass Ave, Cambridge, MA 02139, USA. -+ * -+ */ -+ -+#ifndef __ASM_MACH_JZ4740_IRQ_H__ -+#define __ASM_MACH_JZ4740_IRQ_H__ -+ -+#define MIPS_CPU_IRQ_BASE 0 -+#define JZ4740_IRQ_BASE 8 -+ -+/* 1st-level interrupts */ -+#define JZ4740_IRQ(x) (JZ4740_IRQ_BASE + (x)) -+#define JZ4740_IRQ_I2C JZ4740_IRQ(1) -+#define JZ4740_IRQ_UHC JZ4740_IRQ(3) -+#define JZ4740_IRQ_UART1 JZ4740_IRQ(8) -+#define JZ4740_IRQ_UART0 JZ4740_IRQ(9) -+#define JZ4740_IRQ_SADC JZ4740_IRQ(12) -+#define JZ4740_IRQ_MSC JZ4740_IRQ(14) -+#define JZ4740_IRQ_RTC JZ4740_IRQ(15) -+#define JZ4740_IRQ_SSI JZ4740_IRQ(16) -+#define JZ4740_IRQ_CIM JZ4740_IRQ(17) -+#define JZ4740_IRQ_AIC JZ4740_IRQ(18) -+#define JZ4740_IRQ_ETH JZ4740_IRQ(19) -+#define JZ4740_IRQ_DMAC JZ4740_IRQ(20) -+#define JZ4740_IRQ_TCU2 JZ4740_IRQ(21) -+#define JZ4740_IRQ_TCU1 JZ4740_IRQ(22) -+#define JZ4740_IRQ_TCU0 JZ4740_IRQ(23) -+#define JZ4740_IRQ_UDC JZ4740_IRQ(24) -+#define JZ4740_IRQ_GPIO3 JZ4740_IRQ(25) -+#define JZ4740_IRQ_GPIO2 JZ4740_IRQ(26) -+#define JZ4740_IRQ_GPIO1 JZ4740_IRQ(27) -+#define JZ4740_IRQ_GPIO0 JZ4740_IRQ(28) -+#define JZ4740_IRQ_IPU JZ4740_IRQ(29) -+#define JZ4740_IRQ_LCD JZ4740_IRQ(30) -+ -+/* 2nd-level interrupts */ -+#define JZ4740_IRQ_DMA(x) (JZ4740_IRQ(32) + (X)) -+ -+#define JZ4740_IRQ_INTC_GPIO(x) (JZ4740_IRQ_GPIO0 - (x)) -+#define JZ4740_IRQ_GPIO(x) (JZ4740_IRQ(48) + (x)) -+ -+#define JZ4740_IRQ_ADC_BASE JZ4740_IRQ(176) -+ -+#define NR_IRQS (JZ4740_IRQ_ADC_BASE + 6) -+ -+#endif ---- /dev/null -+++ b/arch/mips/jz4740/irq.c -@@ -0,0 +1,167 @@ -+/* -+ * Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de> -+ * JZ4740 platform IRQ support -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of the GNU General Public License as published by the -+ * Free Software Foundation; either version 2 of the License, or (at your -+ * option) any later version. -+ * -+ * You should have received a copy of the GNU General Public License along -+ * with this program; if not, write to the Free Software Foundation, Inc., -+ * 675 Mass Ave, Cambridge, MA 02139, USA. -+ * -+ */ -+ -+#include <linux/errno.h> -+#include <linux/init.h> -+#include <linux/types.h> -+#include <linux/interrupt.h> -+#include <linux/ioport.h> -+#include <linux/timex.h> -+#include <linux/slab.h> -+#include <linux/delay.h> -+ -+#include <linux/debugfs.h> -+#include <linux/seq_file.h> -+ -+#include <asm/io.h> -+#include <asm/mipsregs.h> -+#include <asm/irq_cpu.h> -+ -+#include <asm/mach-jz4740/base.h> -+ -+static void __iomem *jz_intc_base; -+static uint32_t jz_intc_wakeup; -+static uint32_t jz_intc_saved; -+ -+#define JZ_REG_INTC_STATUS 0x00 -+#define JZ_REG_INTC_MASK 0x04 -+#define JZ_REG_INTC_SET_MASK 0x08 -+#define JZ_REG_INTC_CLEAR_MASK 0x0c -+#define JZ_REG_INTC_PENDING 0x10 -+ -+#define IRQ_BIT(x) BIT((x) - JZ4740_IRQ_BASE) -+ -+static void intc_irq_unmask(unsigned int irq) -+{ -+ writel(IRQ_BIT(irq), jz_intc_base + JZ_REG_INTC_CLEAR_MASK); -+} -+ -+static void intc_irq_mask(unsigned int irq) -+{ -+ writel(IRQ_BIT(irq), jz_intc_base + JZ_REG_INTC_SET_MASK); -+} -+ -+static int intc_irq_set_wake(unsigned int irq, unsigned int on) -+{ -+ if (on) -+ jz_intc_wakeup |= IRQ_BIT(irq); -+ else -+ jz_intc_wakeup &= ~IRQ_BIT(irq); -+ -+ return 0; -+} -+ -+static struct irq_chip intc_irq_type = { -+ .name = "INTC", -+ .mask = intc_irq_mask, -+ .mask_ack = intc_irq_mask, -+ .unmask = intc_irq_unmask, -+ .set_wake = intc_irq_set_wake, -+}; -+ -+static irqreturn_t jz4740_cascade(int irq, void *data) -+{ -+ uint32_t irq_reg; -+ -+ irq_reg = readl(jz_intc_base + JZ_REG_INTC_PENDING); -+ -+ if (irq_reg) -+ generic_handle_irq(__fls(irq_reg) + JZ4740_IRQ_BASE); -+ -+ return IRQ_HANDLED; -+} -+ -+static struct irqaction jz4740_cascade_action = { -+ .handler = jz4740_cascade, -+ .name = "JZ4740 cascade interrupt", -+}; -+ -+void __init arch_init_irq(void) -+{ -+ int i; -+ mips_cpu_irq_init(); -+ -+ jz_intc_base = ioremap(JZ4740_INTC_BASE_ADDR, 0x14); -+ -+ for (i = JZ4740_IRQ_BASE; i < JZ4740_IRQ_BASE + 32; i++) { -+ intc_irq_mask(i); -+ set_irq_chip_and_handler(i, &intc_irq_type, handle_level_irq); -+ } -+ -+ setup_irq(2, &jz4740_cascade_action); -+} -+ -+asmlinkage void plat_irq_dispatch(void) -+{ -+ unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM; -+ if (pending & STATUSF_IP2) -+ do_IRQ(2); -+ else if (pending & STATUSF_IP3) -+ do_IRQ(3); -+ else -+ spurious_interrupt(); -+} -+ -+void jz4740_intc_suspend(void) -+{ -+ jz_intc_saved = readl(jz_intc_base + JZ_REG_INTC_MASK); -+ writel(~jz_intc_wakeup, jz_intc_base + JZ_REG_INTC_SET_MASK); -+ writel(jz_intc_wakeup, jz_intc_base + JZ_REG_INTC_CLEAR_MASK); -+} -+ -+void jz4740_intc_resume(void) -+{ -+ writel(~jz_intc_saved, jz_intc_base + JZ_REG_INTC_CLEAR_MASK); -+ writel(jz_intc_saved, jz_intc_base + JZ_REG_INTC_SET_MASK); -+} -+ -+#ifdef CONFIG_DEBUG_FS -+ -+static inline void intc_seq_reg(struct seq_file *s, const char *name, -+ unsigned int reg) -+{ -+ seq_printf(s, "%s:\t\t%08x\n", name, readl(jz_intc_base + reg)); -+} -+ -+static int intc_regs_show(struct seq_file *s, void *unused) -+{ -+ intc_seq_reg(s, "Status", JZ_REG_INTC_STATUS); -+ intc_seq_reg(s, "Mask", JZ_REG_INTC_MASK); -+ intc_seq_reg(s, "Pending", JZ_REG_INTC_PENDING); -+ -+ return 0; -+} -+ -+static int intc_regs_open(struct inode *inode, struct file *file) -+{ -+ return single_open(file, intc_regs_show, NULL); -+} -+ -+static const struct file_operations intc_regs_operations = { -+ .open = intc_regs_open, -+ .read = seq_read, -+ .llseek = seq_lseek, -+ .release = single_release, -+}; -+ -+static int __init intc_debugfs_init(void) -+{ -+ (void) debugfs_create_file("jz_regs_intc", S_IFREG | S_IRUGO, -+ NULL, NULL, &intc_regs_operations); -+ return 0; -+} -+subsys_initcall(intc_debugfs_init); -+ -+#endif ---- /dev/null -+++ b/arch/mips/jz4740/irq.h -@@ -0,0 +1,21 @@ -+/* -+ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of the GNU General Public License as published by the -+ * Free Software Foundation; either version 2 of the License, or (at your -+ * option) any later version. -+ * -+ * You should have received a copy of the GNU General Public License along -+ * with this program; if not, write to the Free Software Foundation, Inc., -+ * 675 Mass Ave, Cambridge, MA 02139, USA. -+ * -+ */ -+ -+#ifndef __MIPS_JZ4740_IRQ_H__ -+#define __MIPS_JZ4740_IRQ_H__ -+ -+extern void jz4740_intc_suspend(void); -+extern void jz4740_intc_resume(void); -+ -+#endif |