diff options
Diffstat (limited to 'target/linux/cns21xx/patches-3.3/004-arm-add-fa-time.patch')
| -rw-r--r-- | target/linux/cns21xx/patches-3.3/004-arm-add-fa-time.patch | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/target/linux/cns21xx/patches-3.3/004-arm-add-fa-time.patch b/target/linux/cns21xx/patches-3.3/004-arm-add-fa-time.patch new file mode 100644 index 000000000..460e7cb69 --- /dev/null +++ b/target/linux/cns21xx/patches-3.3/004-arm-add-fa-time.patch @@ -0,0 +1,143 @@ +--- /dev/null ++++ b/arch/arm/plat-fa/include/plat/time.h +@@ -0,0 +1,20 @@ ++/* ++ * Copyright (c) 2010-2012 Gabor Juhos <juhosg@openwrt.org> ++ * ++ * 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. ++ */ ++ ++#ifndef _FA_TIME_H ++#define _FA_TIME_H ++ ++#define FA_TIMER1 0 ++#define FA_TIMER2 1 ++#define FA_TIMER3 2 ++ ++int __init fa_timer_init(unsigned int mapbase, unsigned int irq, ++ unsigned int timer, unsigned int freq); ++ ++#endif /* _FA_TIME_H */ +--- /dev/null ++++ b/arch/arm/plat-fa/time.c +@@ -0,0 +1,97 @@ ++/* ++ * Copyright (C) 2001-2006 Storlink, Corp. ++ * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> ++ * Copyright (c) 2010-2012 Gabor Juhos <juhosg@openwrt.org> ++ * ++ * 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. ++ */ ++ ++#include <linux/init.h> ++#include <linux/interrupt.h> ++#include <linux/irq.h> ++#include <linux/io.h> ++ ++#include <asm/mach/time.h> ++#include <plat/time.h> ++ ++/* ++ * Register definitions for the timers ++ */ ++#define TIMER_COUNT(_base, _tmr) ((_base) + 0x00 + (_tmr) * 0x10) ++#define TIMER_LOAD(_base, _tmr) ((_base) + 0x04 + (_tmr) * 0x10) ++#define TIMER_MATCH1(_base, _tmr) ((_base) + 0x08 + (_tmr) * 0x10) ++#define TIMER_MATCH2(_base, _tmr) ((_base) + 0x0c + (_tmr) * 0x10) ++ ++#define TIMER_CR(_base) ((_base) + 0x30) ++#define TIMER_STATUS(_base) ((_base) + 0x34) ++#define TIMER_MASK(_base) ((_base) + 0x38) ++ ++#define TIMER_SIZE 0x3c ++ ++#define TIMER_CR_ENABLE(x) (1 << ((x) * 3)) ++#define TIMER_CR_CLOCK(x) (1 << ((x) * 3 + 1)) ++#define TIMER_CR_INT(x) (1 << ((x) * 3 + 2)) ++#define TIMER_CR_DOWN(x) (1 << ((x) * 3 + 9)) ++ ++#define TIMER_MASK_MATCH1(x) (1 << ((x) * 3)) ++#define TIMER_MASK_MATCH2(x) (1 << ((x) * 3 + 1)) ++#define TIMER_MASK_OF(x) (1 << ((x) * 3 + 2)) ++ ++#define TIMER_MASK_ALL 0x7ff ++ ++/* ++ * IRQ handler for the timer ++ */ ++static irqreturn_t fa_timer_interrupt(int irq, void *dev_id) ++{ ++ timer_tick(); ++ return IRQ_HANDLED; ++} ++ ++static struct irqaction fa_timer_irq = { ++ .name = "Timer Tick", ++ .flags = IRQF_DISABLED | IRQF_TIMER, ++ .handler = fa_timer_interrupt, ++}; ++ ++int __init fa_timer_init(unsigned int mapbase, unsigned int irq, ++ unsigned int timer, unsigned int freq) ++{ ++ void __iomem *base; ++ ++ base = ioremap(mapbase, TIMER_SIZE); ++ if (!base) ++ return -ENOMEM; ++ ++ /* disable timers, clear status and mask all interrupts */ ++ __raw_writel(0, TIMER_CR(base)); ++ __raw_writel(0, TIMER_STATUS(base)); ++ __raw_writel(TIMER_MASK_ALL, TIMER_MASK(base)); ++ ++ /* ++ * Make irqs happen for the system timer ++ */ ++ setup_irq(irq, &fa_timer_irq); ++ ++ /* Setup the timer */ ++ __raw_writel(freq / HZ, TIMER_COUNT(base, timer)); ++ __raw_writel(freq / HZ, TIMER_LOAD(base, timer)); ++ __raw_writel(0, TIMER_MATCH1(base, timer)); ++ __raw_writel(0, TIMER_MATCH2(base, timer)); ++ ++ /* Enable interrupt and start the timer */ ++ __raw_writel(TIMER_MASK_ALL & ~TIMER_MASK_OF(timer), ++ TIMER_MASK(base)); ++ ++ __raw_writel(TIMER_CR_ENABLE(timer) | ++ TIMER_CR_INT(timer) | ++ TIMER_CR_DOWN(timer), ++ TIMER_CR(base)); ++ ++ iounmap(base); ++ ++ return 0; ++} +--- a/arch/arm/plat-fa/Kconfig ++++ b/arch/arm/plat-fa/Kconfig +@@ -1,3 +1,6 @@ + if PLAT_FA + ++config PLAT_FA_TIME ++ def_bool n ++ + endif +--- a/arch/arm/plat-fa/Makefile ++++ b/arch/arm/plat-fa/Makefile +@@ -4,6 +4,8 @@ + + obj-y := + ++obj-$(CONFIG_PLAT_FA_TIME) += time.o ++ + obj-m := + obj-n := + obj- := |