1 files changed, 96 insertions, 0 deletions
diff --git a/arch/h8300/platform/h8300h/generic/timer.c b/arch/h8300/platform/h8300h/generic/timer.c
new file mode 100644
index 000000000000..6590f89e521a
--- /dev/null
+++ b/arch/h8300/platform/h8300h/generic/timer.c
@@ -0,0 +1,96 @@
+/*
+ *  linux/arch/h8300/platform/h8300h/generic/timer.c
+ *
+ *  Yoshinori Sato <ysato@users.sourceforge.jp>
+ *
+ *  Platform depend Timer Handler
+ *
+ */
+
+#include <linux/config.h>
+#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 <asm/segment.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include <linux/timex.h>
+
+#if defined(CONFIG_H83007) || defined(CONFIG_H83068)
+#include <asm/regs306x.h>
+#define CMFA 6
+
+#define CMIEA 0x40
+#define CCLR_CMA 0x08
+#define CLK_DIV8192 0x03
+
+#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*1000/8192 /* Timer input freq. */
+
+void __init platform_timer_setup(irqreturn_t (*timer_int)(int, void *, struct pt_regs *))
+{
+	/* setup 8bit timer ch2 */
+	ctrl_outb(H8300_TIMER_FREQ / HZ, TCORA2);      /* set interval */
+	ctrl_outb(0x00, _8TCSR2);                      /* no output */
+	request_irq(40, timer_int, 0, "timer", 0);
+	ctrl_outb(CMIEA|CCLR_CMA|CLK_DIV8192, _8TCR2); /* start count */
+}
+
+void platform_timer_eoi(void)
+{
+	*(volatile unsigned char *)_8TCSR2 &= ~(1 << CMFA);
+}
+#endif
+
+#if defined(CONFIG_H83002) || defined(CONFIG_H83048)
+/* FIXME! */
+#define TSTR 0x00ffff60
+#define TSNC 0x00ffff61
+#define TMDR 0x00ffff62
+#define TFCR 0x00ffff63
+#define TOER 0x00ffff90
+#define TOCR 0x00ffff91
+/* ITU0 */
+#define TCR  0x00ffff64
+#define TIOR 0x00ffff65
+#define TIER 0x00ffff66
+#define TSR  0x00ffff67
+#define TCNT 0x00ffff68
+#define GRA  0x00ffff6a
+#define GRB  0x00ffff6c
+
+#define CCLR_CMGRA 0x20
+#define CLK_DIV8 0x03
+
+#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*1000/8 /* Timer input freq. */
+
+void __init platform_timer_setup(irqreturn_t (*timer_int)(int, void *, struct pt_regs *))
+{
+	*(unsigned short *)GRA= H8300_TIMER_FREQ / HZ;  /* set interval */
+	*(unsigned short *)TCNT=0;                      /* clear counter */
+	ctrl_outb(0x80|CCLR_CMGRA|CLK_DIV8, TCR);       /* set ITU0 clock */
+	ctrl_outb(0x88, TIOR);                          /* no output */
+	request_irq(26, timer_int, 0, "timer", 0);
+	ctrl_outb(0xf9, TIER);                          /* compare match GRA interrupt */
+	ctrl_outb(ctrl_inb(TSNC) & ~0x01, TSNC);        /* ITU0 async */
+	ctrl_outb(ctrl_inb(TMDR) & ~0x01, TMDR);        /* ITU0 normal mode */
+	ctrl_outb(ctrl_inb(TSTR) | 0x01, TSTR);         /* ITU0 Start */
+	return 0;
+}
+
+void platform_timer_eoi(void)
+{
+	ctrl_outb(ctrl_inb(TSR) & ~0x01,TSR);
+}
+#endif
+
+void platform_gettod(int *year, int *mon, int *day, int *hour,
+		 int *min, int *sec)
+{
+	*year = *mon = *day = *hour = *min = *sec = 0;
+}