diff options
| -rw-r--r-- | arch/sh/Kconfig | 9 | ||||
| -rw-r--r-- | arch/sh/include/asm/timer.h | 1 | ||||
| -rw-r--r-- | arch/sh/include/cpu-sh3/cpu/timer.h | 67 | ||||
| -rw-r--r-- | arch/sh/include/cpu-sh4/cpu/timer.h | 60 | ||||
| -rw-r--r-- | arch/sh/kernel/timers/Makefile | 2 | ||||
| -rw-r--r-- | arch/sh/kernel/timers/timer-tmu.c | 297 | ||||
| -rw-r--r-- | arch/sh/kernel/timers/timer.c | 3 |
7 files changed, 1 insertions, 438 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 5391746..e7b6406 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -473,16 +473,9 @@ source "arch/sh/boards/Kconfig" menu "Timer and clock configuration" -config SH_TMU - bool "TMU timer support" - depends on CPU_SH3 || CPU_SH4 - default y - help - This enables the use of the TMU as the system timer. - config SH_TIMER_TMU bool "TMU timer driver" - depends on !SH_TMU && SYS_SUPPORTS_TMU + depends on SYS_SUPPORTS_TMU default y help This enables the build of the TMU timer driver. diff --git a/arch/sh/include/asm/timer.h b/arch/sh/include/asm/timer.h index 6c08511..f27a88b 100644 --- a/arch/sh/include/asm/timer.h +++ b/arch/sh/include/asm/timer.h @@ -18,7 +18,6 @@ struct sys_timer { struct sys_timer_ops *ops; }; -extern struct sys_timer tmu_timer; extern struct sys_timer *sys_timer; /* arch/sh/kernel/timers/timer.c */ diff --git a/arch/sh/include/cpu-sh3/cpu/timer.h b/arch/sh/include/cpu-sh3/cpu/timer.h deleted file mode 100644 index 793acf1..0000000 --- a/arch/sh/include/cpu-sh3/cpu/timer.h +++ /dev/null @@ -1,67 +0,0 @@ -/* - * include/asm-sh/cpu-sh3/timer.h - * - * Copyright (C) 2004 Lineo Solutions, Inc. - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ -#ifndef __ASM_CPU_SH3_TIMER_H -#define __ASM_CPU_SH3_TIMER_H - -/* - * --------------------------------------------------------------------------- - * TMU Common definitions for SH3 processors - * SH7706 - * SH7709S - * SH7727 - * SH7729R - * SH7710 - * SH7720 - * SH7710 - * --------------------------------------------------------------------------- - */ - -#if !defined(CONFIG_CPU_SUBTYPE_SH7720) && !defined(CONFIG_CPU_SUBTYPE_SH7721) -#define TMU_TOCR 0xfffffe90 /* Byte access */ -#endif - -#if defined(CONFIG_CPU_SUBTYPE_SH7710) || \ - defined(CONFIG_CPU_SUBTYPE_SH7720) || \ - defined(CONFIG_CPU_SUBTYPE_SH7721) -#define TMU_012_TSTR 0xa412fe92 /* Byte access */ - -#define TMU0_TCOR 0xa412fe94 /* Long access */ -#define TMU0_TCNT 0xa412fe98 /* Long access */ -#define TMU0_TCR 0xa412fe9c /* Word access */ - -#define TMU1_TCOR 0xa412fea0 /* Long access */ -#define TMU1_TCNT 0xa412fea4 /* Long access */ -#define TMU1_TCR 0xa412fea8 /* Word access */ - -#define TMU2_TCOR 0xa412feac /* Long access */ -#define TMU2_TCNT 0xa412feb0 /* Long access */ -#define TMU2_TCR 0xa412feb4 /* Word access */ - -#else -#define TMU_012_TSTR 0xfffffe92 /* Byte access */ - -#define TMU0_TCOR 0xfffffe94 /* Long access */ -#define TMU0_TCNT 0xfffffe98 /* Long access */ -#define TMU0_TCR 0xfffffe9c /* Word access */ - -#define TMU1_TCOR 0xfffffea0 /* Long access */ -#define TMU1_TCNT 0xfffffea4 /* Long access */ -#define TMU1_TCR 0xfffffea8 /* Word access */ - -#define TMU2_TCOR 0xfffffeac /* Long access */ -#define TMU2_TCNT 0xfffffeb0 /* Long access */ -#define TMU2_TCR 0xfffffeb4 /* Word access */ -#if !defined(CONFIG_CPU_SUBTYPE_SH7720) && !defined(CONFIG_CPU_SUBTYPE_SH7721) -#define TMU2_TCPR2 0xfffffeb8 /* Long access */ -#endif -#endif - -#endif /* __ASM_CPU_SH3_TIMER_H */ - diff --git a/arch/sh/include/cpu-sh4/cpu/timer.h b/arch/sh/include/cpu-sh4/cpu/timer.h deleted file mode 100644 index d1e796b..0000000 --- a/arch/sh/include/cpu-sh4/cpu/timer.h +++ /dev/null @@ -1,60 +0,0 @@ -/* - * include/asm-sh/cpu-sh4/timer.h - * - * Copyright (C) 2004 Lineo Solutions, Inc. - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ -#ifndef __ASM_CPU_SH4_TIMER_H -#define __ASM_CPU_SH4_TIMER_H - -/* - * --------------------------------------------------------------------------- - * TMU Common definitions for SH4 processors - * SH7750S/SH7750R - * SH7751/SH7751R - * SH7760 - * SH-X3 - * --------------------------------------------------------------------------- - */ -#ifdef CONFIG_CPU_SUBTYPE_SHX3 -#define TMU_012_BASE 0xffc10000 -#define TMU_345_BASE 0xffc20000 -#else -#define TMU_012_BASE 0xffd80000 -#define TMU_345_BASE 0xfe100000 -#endif - -#define TMU_TOCR TMU_012_BASE /* Not supported on all CPUs */ - -#define TMU_012_TSTR (TMU_012_BASE + 0x04) -#define TMU_345_TSTR (TMU_345_BASE + 0x04) - -#define TMU0_TCOR (TMU_012_BASE + 0x08) -#define TMU0_TCNT (TMU_012_BASE + 0x0c) -#define TMU0_TCR (TMU_012_BASE + 0x10) - -#define TMU1_TCOR (TMU_012_BASE + 0x14) -#define TMU1_TCNT (TMU_012_BASE + 0x18) -#define TMU1_TCR (TMU_012_BASE + 0x1c) - -#define TMU2_TCOR (TMU_012_BASE + 0x20) -#define TMU2_TCNT (TMU_012_BASE + 0x24) -#define TMU2_TCR (TMU_012_BASE + 0x28) -#define TMU2_TCPR (TMU_012_BASE + 0x2c) - -#define TMU3_TCOR (TMU_345_BASE + 0x08) -#define TMU3_TCNT (TMU_345_BASE + 0x0c) -#define TMU3_TCR (TMU_345_BASE + 0x10) - -#define TMU4_TCOR (TMU_345_BASE + 0x14) -#define TMU4_TCNT (TMU_345_BASE + 0x18) -#define TMU4_TCR (TMU_345_BASE + 0x1c) - -#define TMU5_TCOR (TMU_345_BASE + 0x20) -#define TMU5_TCNT (TMU_345_BASE + 0x24) -#define TMU5_TCR (TMU_345_BASE + 0x28) - -#endif /* __ASM_CPU_SH4_TIMER_H */ diff --git a/arch/sh/kernel/timers/Makefile b/arch/sh/kernel/timers/Makefile index 8bceba5..fefd7ed 100644 --- a/arch/sh/kernel/timers/Makefile +++ b/arch/sh/kernel/timers/Makefile @@ -3,5 +3,3 @@ # obj-y := timer.o - -obj-$(CONFIG_SH_TMU) += timer-tmu.o diff --git a/arch/sh/kernel/timers/timer-tmu.c b/arch/sh/kernel/timers/timer-tmu.c deleted file mode 100644 index fe8d893..0000000 --- a/arch/sh/kernel/timers/timer-tmu.c +++ /dev/null @@ -1,297 +0,0 @@ -/* - * arch/sh/kernel/timers/timer-tmu.c - TMU Timer Support - * - * Copyright (C) 2005 - 2007 Paul Mundt - * - * TMU handling code hacked out of arch/sh/kernel/time.c - * - * Copyright (C) 1999 Tetsuya Okada & Niibe Yutaka - * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org> - * Copyright (C) 2002, 2003, 2004 Paul Mundt - * Copyright (C) 2002 M. R. Brown <mrbrown@linux-sh.org> - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/interrupt.h> -#include <linux/seqlock.h> -#include <linux/clockchips.h> -#include <asm/timer.h> -#include <asm/rtc.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/clock.h> - -#define TMU_TOCR_INIT 0x00 -#define TMU_TCR_INIT 0x0020 - -#define TMU0 (0) -#define TMU1 (1) - -static inline void _tmu_start(int tmu_num) -{ - ctrl_outb(ctrl_inb(TMU_012_TSTR) | (0x1<<tmu_num), TMU_012_TSTR); -} - -static inline void _tmu_set_irq(int tmu_num, int enabled) -{ - register unsigned long tmu_tcr = TMU0_TCR + (0xc*tmu_num); - ctrl_outw( (enabled ? ctrl_inw(tmu_tcr) | (1<<5) : ctrl_inw(tmu_tcr) & ~(1<<5)), tmu_tcr); -} - -static inline void _tmu_stop(int tmu_num) -{ - ctrl_outb(ctrl_inb(TMU_012_TSTR) & ~(0x1<<tmu_num), TMU_012_TSTR); -} - -static inline void _tmu_clear_status(int tmu_num) -{ - register unsigned long tmu_tcr = TMU0_TCR + (0xc*tmu_num); - /* Clear UNF bit */ - ctrl_outw(ctrl_inw(tmu_tcr) & ~0x100, tmu_tcr); -} - -static inline unsigned long _tmu_read(int tmu_num) -{ - return ctrl_inl(TMU0_TCNT+0xC*tmu_num); -} - -static int tmu_timer_start(void) -{ - _tmu_start(TMU0); - _tmu_start(TMU1); - _tmu_set_irq(TMU0,1); - return 0; -} - -static int tmu_timer_stop(void) -{ - _tmu_stop(TMU0); - _tmu_stop(TMU1); - _tmu_clear_status(TMU0); - return 0; -} - -/* - * also when the module_clk is scaled the TMU1 - * will show the same frequency - */ -static int tmus_are_scaled; - -static cycle_t tmu_timer_read(struct clocksource *cs) -{ - return ((cycle_t)(~_tmu_read(TMU1)))<<tmus_are_scaled; -} - - -static unsigned long tmu_latest_interval[3]; -static void tmu_timer_set_interval(int tmu_num, unsigned long interval, unsigned int reload) -{ - unsigned long tmu_tcnt = TMU0_TCNT + tmu_num*0xC; - unsigned long tmu_tcor = TMU0_TCOR + tmu_num*0xC; - - _tmu_stop(tmu_num); - - ctrl_outl(interval, tmu_tcnt); - tmu_latest_interval[tmu_num] = interval; - - /* - * TCNT reloads from TCOR on underflow, clear it if we don't - * intend to auto-reload - */ - ctrl_outl( reload ? interval : 0 , tmu_tcor); - - _tmu_start(tmu_num); -} - -static int tmu_set_next_event(unsigned long cycles, - struct clock_event_device *evt) -{ - tmu_timer_set_interval(TMU0,cycles, evt->mode == CLOCK_EVT_MODE_PERIODIC); - _tmu_set_irq(TMU0,1); - return 0; -} - -static void tmu_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) -{ - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - ctrl_outl(tmu_latest_interval[TMU0], TMU0_TCOR); - break; - case CLOCK_EVT_MODE_ONESHOT: - ctrl_outl(0, TMU0_TCOR); - break; - case CLOCK_EVT_MODE_UNUSED: - case CLOCK_EVT_MODE_SHUTDOWN: - case CLOCK_EVT_MODE_RESUME: - break; - } -} - -static struct clock_event_device tmu0_clockevent = { - .name = "tmu0", - .shift = 32, - .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, - .set_mode = tmu_set_mode, - .set_next_event = tmu_set_next_event, -}; - -static irqreturn_t tmu_timer_interrupt(int irq, void *dummy) -{ - struct clock_event_device *evt = &tmu0_clockevent; - _tmu_clear_status(TMU0); - _tmu_set_irq(TMU0,tmu0_clockevent.mode != CLOCK_EVT_MODE_ONESHOT); - - switch (tmu0_clockevent.mode) { - case CLOCK_EVT_MODE_ONESHOT: - case CLOCK_EVT_MODE_PERIODIC: - evt->event_handler(evt); - break; - default: - break; - } - - return IRQ_HANDLED; -} - -static struct irqaction tmu0_irq = { - .name = "periodic/oneshot timer", - .handler = tmu_timer_interrupt, - .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, -}; - -static void __init tmu_clk_init(struct clk *clk) -{ - u8 divisor = TMU_TCR_INIT & 0x7; - int tmu_num = clk->name[3]-'0'; - ctrl_outw(TMU_TCR_INIT, TMU0_TCR+(tmu_num*0xC)); - clk->rate = clk_get_rate(clk->parent) / (4 << (divisor << 1)); -} - -static void tmu_clk_recalc(struct clk *clk) -{ - int tmu_num = clk->name[3]-'0'; - unsigned long prev_rate = clk_get_rate(clk); - unsigned long flags; - u8 divisor = ctrl_inw(TMU0_TCR+tmu_num*0xC) & 0x7; - clk->rate = clk_get_rate(clk->parent) / (4 << (divisor << 1)); - - if(prev_rate==clk_get_rate(clk)) - return; - - if(tmu_num) - return; /* No more work on TMU1 */ - - local_irq_save(flags); - tmus_are_scaled = (prev_rate > clk->rate); - - _tmu_stop(TMU0); - - tmu0_clockevent.mult = div_sc(clk->rate, NSEC_PER_SEC, - tmu0_clockevent.shift); - tmu0_clockevent.max_delta_ns = - clockevent_delta2ns(-1, &tmu0_clockevent); - tmu0_clockevent.min_delta_ns = - clockevent_delta2ns(1, &tmu0_clockevent); - - if (tmus_are_scaled) - tmu_latest_interval[TMU0] >>= 1; - else - tmu_latest_interval[TMU0] <<= 1; - - tmu_timer_set_interval(TMU0, - tmu_latest_interval[TMU0], - tmu0_clockevent.mode == CLOCK_EVT_MODE_PERIODIC); - - _tmu_start(TMU0); - - local_irq_restore(flags); -} - -static struct clk_ops tmu_clk_ops = { - .init = tmu_clk_init, - .recalc = tmu_clk_recalc, -}; - -static struct clk tmu0_clk = { - .name = "tmu0_clk", - .ops = &tmu_clk_ops, -}; - -static struct clk tmu1_clk = { - .name = "tmu1_clk", - .ops = &tmu_clk_ops, -}; - -static int tmu_timer_init(void) -{ - unsigned long interval; - unsigned long frequency; - - setup_irq(CONFIG_SH_TIMER_IRQ, &tmu0_irq); - - tmu0_clk.parent = clk_get(NULL, "module_clk"); - tmu1_clk.parent = clk_get(NULL, "module_clk"); - - tmu_timer_stop(); - -#if !defined(CONFIG_CPU_SUBTYPE_SH7720) && \ - !defined(CONFIG_CPU_SUBTYPE_SH7721) && \ - !defined(CONFIG_CPU_SUBTYPE_SH7760) && \ - !defined(CONFIG_CPU_SUBTYPE_SH7785) && \ - !defined(CONFIG_CPU_SUBTYPE_SH7786) && \ - !defined(CONFIG_CPU_SUBTYPE_SHX3) - ctrl_outb(TMU_TOCR_INIT, TMU_TOCR); -#endif - - clk_register(&tmu0_clk); - clk_register(&tmu1_clk); - clk_enable(&tmu0_clk); - clk_enable(&tmu1_clk); - - frequency = clk_get_rate(&tmu0_clk); - interval = (frequency + HZ / 2) / HZ; - - tmu_timer_set_interval(TMU0,interval, 1); - tmu_timer_set_interval(TMU1,~0,1); - - _tmu_start(TMU1); - - clocksource_sh.rating = 200; - clocksource_sh.mask = CLOCKSOURCE_MASK(32); - clocksource_sh.read = tmu_timer_read; - clocksource_sh.shift = 10; - clocksource_sh.mult = clocksource_hz2mult(clk_get_rate(&tmu1_clk), - clocksource_sh.shift); - clocksource_sh.flags = CLOCK_SOURCE_IS_CONTINUOUS; - clocksource_register(&clocksource_sh); - - tmu0_clockevent.mult = div_sc(frequency, NSEC_PER_SEC, - tmu0_clockevent.shift); - tmu0_clockevent.max_delta_ns = - clockevent_delta2ns(-1, &tmu0_clockevent); - tmu0_clockevent.min_delta_ns = - clockevent_delta2ns(1, &tmu0_clockevent); - - tmu0_clockevent.cpumask = cpumask_of(0); - tmu0_clockevent.rating = 100; - - clockevents_register_device(&tmu0_clockevent); - - return 0; -} - -static struct sys_timer_ops tmu_timer_ops = { - .init = tmu_timer_init, - .start = tmu_timer_start, - .stop = tmu_timer_stop, -}; - -struct sys_timer tmu_timer = { - .name = "tmu", - .ops = &tmu_timer_ops, -}; diff --git a/arch/sh/kernel/timers/timer.c b/arch/sh/kernel/timers/timer.c index 920891a..f8812bd 100644 --- a/arch/sh/kernel/timers/timer.c +++ b/arch/sh/kernel/timers/timer.c @@ -14,9 +14,6 @@ #include <asm/timer.h> static struct sys_timer *sys_timers[] = { -#ifdef CONFIG_SH_TMU - &tmu_timer, -#endif NULL, }; |