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-rw-r--r--arch/sh/Kconfig18
-rw-r--r--arch/sh/include/asm/timer.h2
-rw-r--r--arch/sh/kernel/timers/Makefile1
-rw-r--r--arch/sh/kernel/timers/timer-cmt.c188
-rw-r--r--arch/sh/kernel/timers/timer.c3
5 files changed, 6 insertions, 206 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 9db02ced57a..7e96adea960 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -462,22 +462,14 @@ config SH_TMU
help
This enables the use of the TMU as the system timer.
-config SH_CMT
- bool "CMT timer support"
- depends on SYS_SUPPORTS_CMT && CPU_SH2
- default y
- help
- This enables the use of the CMT as the system timer.
-
-#
-# Support for the new-style CMT driver. This will replace SH_CMT
-# once its other dependencies are merged.
-#
config SH_TIMER_CMT
- bool "CMT clockevents driver"
- depends on SYS_SUPPORTS_CMT && !SH_CMT
+ bool "CMT timer driver"
+ depends on SYS_SUPPORTS_CMT
+ default y
select GENERIC_CLOCKEVENTS
select GENERIC_TIME
+ help
+ This enables build of the CMT timer driver.
config SH_MTU2
bool "MTU2 timer support"
diff --git a/arch/sh/include/asm/timer.h b/arch/sh/include/asm/timer.h
index 4c3b66e30af..8f80a55c04a 100644
--- a/arch/sh/include/asm/timer.h
+++ b/arch/sh/include/asm/timer.h
@@ -23,7 +23,7 @@ struct sys_timer {
#define TICK_SIZE (tick_nsec / 1000)
-extern struct sys_timer tmu_timer, cmt_timer, mtu2_timer;
+extern struct sys_timer tmu_timer, mtu2_timer;
extern struct sys_timer *sys_timer;
#ifndef CONFIG_GENERIC_TIME
diff --git a/arch/sh/kernel/timers/Makefile b/arch/sh/kernel/timers/Makefile
index 0b7f8577193..1e9a104c2ae 100644
--- a/arch/sh/kernel/timers/Makefile
+++ b/arch/sh/kernel/timers/Makefile
@@ -6,6 +6,5 @@ obj-y := timer.o
obj-$(CONFIG_SH_TMU) += timer-tmu.o
obj-$(CONFIG_SH_MTU2) += timer-mtu2.o
-obj-$(CONFIG_SH_CMT) += timer-cmt.o
obj-$(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) += timer-broadcast.o
diff --git a/arch/sh/kernel/timers/timer-cmt.c b/arch/sh/kernel/timers/timer-cmt.c
deleted file mode 100644
index 9aa348658ae..00000000000
--- a/arch/sh/kernel/timers/timer-cmt.c
+++ /dev/null
@@ -1,188 +0,0 @@
-/*
- * arch/sh/kernel/timers/timer-cmt.c - CMT Timer Support
- *
- * Copyright (C) 2005 Yoshinori Sato
- *
- * 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 <asm/timer.h>
-#include <asm/rtc.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/clock.h>
-
-#if defined(CONFIG_CPU_SUBTYPE_SH7619)
-#define CMT_CMSTR 0xf84a0070
-#define CMT_CMCSR_0 0xf84a0072
-#define CMT_CMCNT_0 0xf84a0074
-#define CMT_CMCOR_0 0xf84a0076
-#define CMT_CMCSR_1 0xf84a0078
-#define CMT_CMCNT_1 0xf84a007a
-#define CMT_CMCOR_1 0xf84a007c
-
-#define STBCR3 0xf80a0000
-#define cmt_clock_enable() do { ctrl_outb(ctrl_inb(STBCR3) & ~0x10, STBCR3); } while(0)
-#define CMT_CMCSR_INIT 0x0040
-#define CMT_CMCSR_CALIB 0x0000
-#elif defined(CONFIG_CPU_SUBTYPE_SH7203) || \
- defined(CONFIG_CPU_SUBTYPE_SH7206) || \
- defined(CONFIG_CPU_SUBTYPE_SH7263)
-#define CMT_CMSTR 0xfffec000
-#define CMT_CMCSR_0 0xfffec002
-#define CMT_CMCNT_0 0xfffec004
-#define CMT_CMCOR_0 0xfffec006
-
-#define STBCR4 0xfffe040c
-#define cmt_clock_enable() do { ctrl_outb(ctrl_inb(STBCR4) & ~0x04, STBCR4); } while(0)
-#define CMT_CMCSR_INIT 0x0040
-#define CMT_CMCSR_CALIB 0x0000
-#else
-#error "Unknown CPU SUBTYPE"
-#endif
-
-static unsigned long cmt_timer_get_offset(void)
-{
- int count;
- static unsigned short count_p = 0xffff; /* for the first call after boot */
- static unsigned long jiffies_p = 0;
-
- /*
- * cache volatile jiffies temporarily; we have IRQs turned off.
- */
- unsigned long jiffies_t;
-
- /* timer count may underflow right here */
- count = ctrl_inw(CMT_CMCOR_0);
- count -= ctrl_inw(CMT_CMCNT_0);
-
- jiffies_t = jiffies;
-
- /*
- * avoiding timer inconsistencies (they are rare, but they happen)...
- * there is one kind of problem that must be avoided here:
- * 1. the timer counter underflows
- */
-
- if (jiffies_t == jiffies_p) {
- if (count > count_p) {
- /* the nutcase */
- if (ctrl_inw(CMT_CMCSR_0) & 0x80) { /* Check CMF bit */
- count -= LATCH;
- } else {
- printk("%s (): hardware timer problem?\n",
- __func__);
- }
- }
- } else
- jiffies_p = jiffies_t;
-
- count_p = count;
-
- count = ((LATCH-1) - count) * TICK_SIZE;
- count = (count + LATCH/2) / LATCH;
-
- return count;
-}
-
-static irqreturn_t cmt_timer_interrupt(int irq, void *dev_id)
-{
- unsigned long timer_status;
-
- /* Clear CMF bit */
- timer_status = ctrl_inw(CMT_CMCSR_0);
- timer_status &= ~0x80;
- ctrl_outw(timer_status, CMT_CMCSR_0);
-
- handle_timer_tick();
-
- return IRQ_HANDLED;
-}
-
-static struct irqaction cmt_irq = {
- .name = "timer",
- .handler = cmt_timer_interrupt,
- .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
-};
-
-static void cmt_clk_init(struct clk *clk)
-{
- u8 divisor = CMT_CMCSR_INIT & 0x3;
- ctrl_inw(CMT_CMCSR_0);
- ctrl_outw(CMT_CMCSR_INIT, CMT_CMCSR_0);
- clk->parent = clk_get(NULL, "module_clk");
- clk->rate = clk->parent->rate / (8 << (divisor << 1));
-}
-
-static void cmt_clk_recalc(struct clk *clk)
-{
- u8 divisor = ctrl_inw(CMT_CMCSR_0) & 0x3;
- clk->rate = clk->parent->rate / (8 << (divisor << 1));
-}
-
-static struct clk_ops cmt_clk_ops = {
- .init = cmt_clk_init,
- .recalc = cmt_clk_recalc,
-};
-
-static struct clk cmt0_clk = {
- .name = "cmt0_clk",
- .ops = &cmt_clk_ops,
-};
-
-static int cmt_timer_start(void)
-{
- ctrl_outw(ctrl_inw(CMT_CMSTR) | 0x01, CMT_CMSTR);
- return 0;
-}
-
-static int cmt_timer_stop(void)
-{
- ctrl_outw(ctrl_inw(CMT_CMSTR) & ~0x01, CMT_CMSTR);
- return 0;
-}
-
-static int cmt_timer_init(void)
-{
- unsigned long interval;
-
- cmt_clock_enable();
-
- setup_irq(CONFIG_SH_TIMER_IRQ, &cmt_irq);
-
- cmt0_clk.parent = clk_get(NULL, "module_clk");
-
- cmt_timer_stop();
-
- interval = cmt0_clk.parent->rate / 8 / HZ;
- printk(KERN_INFO "Interval = %ld\n", interval);
-
- ctrl_outw(interval, CMT_CMCOR_0);
-
- clk_register(&cmt0_clk);
- clk_enable(&cmt0_clk);
-
- cmt_timer_start();
-
- return 0;
-}
-
-static struct sys_timer_ops cmt_timer_ops = {
- .init = cmt_timer_init,
- .start = cmt_timer_start,
- .stop = cmt_timer_stop,
-#ifndef CONFIG_GENERIC_TIME
- .get_offset = cmt_timer_get_offset,
-#endif
-};
-
-struct sys_timer cmt_timer = {
- .name = "cmt",
- .ops = &cmt_timer_ops,
-};
diff --git a/arch/sh/kernel/timers/timer.c b/arch/sh/kernel/timers/timer.c
index 4e7e747d1b6..f3bd1413d56 100644
--- a/arch/sh/kernel/timers/timer.c
+++ b/arch/sh/kernel/timers/timer.c
@@ -20,9 +20,6 @@ static struct sys_timer *sys_timers[] = {
#ifdef CONFIG_SH_MTU2
&mtu2_timer,
#endif
-#ifdef CONFIG_SH_CMT
- &cmt_timer,
-#endif
NULL,
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 16:07:17 +0000