diff options
Diffstat (limited to 'target/linux/xburst/patches-2.6.35/005-timer.patch')
| -rw-r--r-- | target/linux/xburst/patches-2.6.35/005-timer.patch | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/target/linux/xburst/patches-2.6.35/005-timer.patch b/target/linux/xburst/patches-2.6.35/005-timer.patch new file mode 100644 index 0000000000..2e117de4b6 --- /dev/null +++ b/target/linux/xburst/patches-2.6.35/005-timer.patch @@ -0,0 +1,238 @@ +From ad817ad0a57d0fa6041071395d4cf0d2e9a44635 Mon Sep 17 00:00:00 2001 +From: Lars-Peter Clausen <lars@metafoo.de> +Date: Sat, 19 Jun 2010 04:08:09 +0000 +Subject: [PATCH] MIPS: JZ4740: Add timer support + +Add support for the timer/counter unit on a JZ4740 SoC. This code is used +as a common base for the JZ4740 clocksource/clockevent implementation and +PWM support. + +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/1396/ +Signed-off-by: Ralf Baechle <ralf@linux-mips.org> +--- + arch/mips/include/asm/mach-jz4740/timer.h | 22 +++++ + arch/mips/jz4740/timer.c | 48 ++++++++++ + arch/mips/jz4740/timer.h | 136 +++++++++++++++++++++++++++++ + 3 files changed, 206 insertions(+), 0 deletions(-) + create mode 100644 arch/mips/include/asm/mach-jz4740/timer.h + create mode 100644 arch/mips/jz4740/timer.c + create mode 100644 arch/mips/jz4740/timer.h + +--- /dev/null ++++ b/arch/mips/include/asm/mach-jz4740/timer.h +@@ -0,0 +1,22 @@ ++/* ++ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> ++ * JZ4740 platform timer 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. ++ * ++ */ ++ ++#ifndef __ASM_MACH_JZ4740_TIMER ++#define __ASM_MACH_JZ4740_TIMER ++ ++void jz4740_timer_enable_watchdog(void); ++void jz4740_timer_disable_watchdog(void); ++ ++#endif +--- /dev/null ++++ b/arch/mips/jz4740/timer.c +@@ -0,0 +1,48 @@ ++/* ++ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> ++ * JZ4740 platform timer 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/io.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++ ++#include "timer.h" ++ ++#include <asm/mach-jz4740/base.h> ++ ++void __iomem *jz4740_timer_base; ++ ++void jz4740_timer_enable_watchdog(void) ++{ ++ writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_CLEAR); ++} ++ ++void jz4740_timer_disable_watchdog(void) ++{ ++ writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_SET); ++} ++ ++void __init jz4740_timer_init(void) ++{ ++ jz4740_timer_base = ioremap(JZ4740_TCU_BASE_ADDR, 0x100); ++ ++ if (!jz4740_timer_base) ++ panic("Failed to ioremap timer registers"); ++ ++ /* Disable all timer clocks except for those used as system timers */ ++ writel(0x000100fc, jz4740_timer_base + JZ_REG_TIMER_STOP_SET); ++ ++ /* Timer irqs are unmasked by default, mask them */ ++ writel(0x00ff00ff, jz4740_timer_base + JZ_REG_TIMER_MASK_SET); ++} +--- /dev/null ++++ b/arch/mips/jz4740/timer.h +@@ -0,0 +1,136 @@ ++/* ++ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> ++ * JZ4740 platform timer 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. ++ * ++ */ ++ ++#ifndef __MIPS_JZ4740_TIMER_H__ ++#define __MIPS_JZ4740_TIMER_H__ ++ ++#include <linux/module.h> ++#include <linux/io.h> ++ ++#define JZ_REG_TIMER_STOP 0x0C ++#define JZ_REG_TIMER_STOP_SET 0x1C ++#define JZ_REG_TIMER_STOP_CLEAR 0x2C ++#define JZ_REG_TIMER_ENABLE 0x00 ++#define JZ_REG_TIMER_ENABLE_SET 0x04 ++#define JZ_REG_TIMER_ENABLE_CLEAR 0x08 ++#define JZ_REG_TIMER_FLAG 0x10 ++#define JZ_REG_TIMER_FLAG_SET 0x14 ++#define JZ_REG_TIMER_FLAG_CLEAR 0x18 ++#define JZ_REG_TIMER_MASK 0x20 ++#define JZ_REG_TIMER_MASK_SET 0x24 ++#define JZ_REG_TIMER_MASK_CLEAR 0x28 ++ ++#define JZ_REG_TIMER_DFR(x) (((x) * 0x10) + 0x30) ++#define JZ_REG_TIMER_DHR(x) (((x) * 0x10) + 0x34) ++#define JZ_REG_TIMER_CNT(x) (((x) * 0x10) + 0x38) ++#define JZ_REG_TIMER_CTRL(x) (((x) * 0x10) + 0x3C) ++ ++#define JZ_TIMER_IRQ_HALF(x) BIT((x) + 0x10) ++#define JZ_TIMER_IRQ_FULL(x) BIT(x) ++ ++#define JZ_TIMER_CTRL_PWM_ABBRUPT_SHUTDOWN BIT(9) ++#define JZ_TIMER_CTRL_PWM_ACTIVE_LOW BIT(8) ++#define JZ_TIMER_CTRL_PWM_ENABLE BIT(7) ++#define JZ_TIMER_CTRL_PRESCALE_MASK 0x1c ++#define JZ_TIMER_CTRL_PRESCALE_OFFSET 0x3 ++#define JZ_TIMER_CTRL_PRESCALE_1 (0 << 3) ++#define JZ_TIMER_CTRL_PRESCALE_4 (1 << 3) ++#define JZ_TIMER_CTRL_PRESCALE_16 (2 << 3) ++#define JZ_TIMER_CTRL_PRESCALE_64 (3 << 3) ++#define JZ_TIMER_CTRL_PRESCALE_256 (4 << 3) ++#define JZ_TIMER_CTRL_PRESCALE_1024 (5 << 3) ++ ++#define JZ_TIMER_CTRL_PRESCALER(x) ((x) << JZ_TIMER_CTRL_PRESCALE_OFFSET) ++ ++#define JZ_TIMER_CTRL_SRC_EXT BIT(2) ++#define JZ_TIMER_CTRL_SRC_RTC BIT(1) ++#define JZ_TIMER_CTRL_SRC_PCLK BIT(0) ++ ++extern void __iomem *jz4740_timer_base; ++void __init jz4740_timer_init(void); ++ ++static inline void jz4740_timer_stop(unsigned int timer) ++{ ++ writel(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_STOP_SET); ++} ++ ++static inline void jz4740_timer_start(unsigned int timer) ++{ ++ writel(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_STOP_CLEAR); ++} ++ ++static inline bool jz4740_timer_is_enabled(unsigned int timer) ++{ ++ return readb(jz4740_timer_base + JZ_REG_TIMER_ENABLE) & BIT(timer); ++} ++ ++static inline void jz4740_timer_enable(unsigned int timer) ++{ ++ writeb(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_ENABLE_SET); ++} ++ ++static inline void jz4740_timer_disable(unsigned int timer) ++{ ++ writeb(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_ENABLE_CLEAR); ++} ++ ++ ++static inline void jz4740_timer_set_period(unsigned int timer, uint16_t period) ++{ ++ writew(period, jz4740_timer_base + JZ_REG_TIMER_DFR(timer)); ++} ++ ++static inline void jz4740_timer_set_duty(unsigned int timer, uint16_t duty) ++{ ++ writew(duty, jz4740_timer_base + JZ_REG_TIMER_DHR(timer)); ++} ++ ++static inline void jz4740_timer_set_count(unsigned int timer, uint16_t count) ++{ ++ writew(count, jz4740_timer_base + JZ_REG_TIMER_CNT(timer)); ++} ++ ++static inline uint16_t jz4740_timer_get_count(unsigned int timer) ++{ ++ return readw(jz4740_timer_base + JZ_REG_TIMER_CNT(timer)); ++} ++ ++static inline void jz4740_timer_ack_full(unsigned int timer) ++{ ++ writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_FLAG_CLEAR); ++} ++ ++static inline void jz4740_timer_irq_full_enable(unsigned int timer) ++{ ++ writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_FLAG_CLEAR); ++ writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_MASK_CLEAR); ++} ++ ++static inline void jz4740_timer_irq_full_disable(unsigned int timer) ++{ ++ writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_MASK_SET); ++} ++ ++static inline void jz4740_timer_set_ctrl(unsigned int timer, uint16_t ctrl) ++{ ++ writew(ctrl, jz4740_timer_base + JZ_REG_TIMER_CTRL(timer)); ++} ++ ++static inline uint16_t jz4740_timer_get_ctrl(unsigned int timer) ++{ ++ return readw(jz4740_timer_base + JZ_REG_TIMER_CTRL(timer)); ++} ++ ++#endif |