h8300: update timer handler - new files
New timer handler files.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/h8300/kernel/timer/timer16.c b/arch/h8300/kernel/timer/timer16.c
new file mode 100644
index 0000000..e14271b
--- /dev/null
+++ b/arch/h8300/kernel/timer/timer16.c
@@ -0,0 +1,78 @@
+/*
+ * linux/arch/h8300/kernel/timer/timer16.c
+ *
+ * Yoshinori Sato <ysato@users.sourcefoge.jp>
+ *
+ * 16bit Timer Handler
+ *
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/timex.h>
+
+#include <asm/segment.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/regs306x.h>
+
+/* 16bit timer */
+#if CONFIG_H8300_TIMER16_CH == 0
+#define _16BASE 0xffff78
+#define _16IRQ 24
+#elif CONFIG_H8300_TIMER16_CH == 1
+#define _16BASE 0xffff80
+#define _16IRQ 28
+#elif CONFIG_H8300_TIMER16_CH == 2
+#define _16BASE 0xffff88
+#define _16IRQ 32
+#else
+#error Unknown timer channel.
+#endif
+
+#define TCR 0
+#define TIOR 1
+#define TCNT 2
+#define GRA 4
+#define GRB 6
+
+#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*10000 /* Timer input freq. */
+
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
+{
+ h8300_timer_tick();
+ ctrl_bclr(CONFIG_H8300_TIMER16_CH, TISRA);
+ return IRQ_HANDLED;
+}
+
+static struct irqaction timer16_irq = {
+ .name = "timer-16",
+ .handler = timer_interrupt,
+ .flags = IRQF_DISABLED | IRQF_TIMER,
+ .mask = CPU_MASK_NONE,
+};
+
+static const int __initdata divide_rate[] = {1, 2, 4, 8};
+
+void __init h8300_timer_setup(void)
+{
+ unsigned int div;
+ unsigned int cnt;
+
+ calc_param(cnt, div, divide_rate, 0x10000);
+
+ setup_irq(_16IRQ, &timer16_irq);
+
+ /* initalize timer */
+ ctrl_outb(0, TSTR);
+ ctrl_outb(CCLR0 | div, _16BASE + TCR);
+ ctrl_outw(cnt, _16BASE + GRA);
+ ctrl_bset(4 + CONFIG_H8300_TIMER16_CH, TISRA);
+ ctrl_bset(CONFIG_H8300_TIMER16_CH, TSTR);
+}