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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/h8300/platform/h8300h/generic/timer.c
downloadlinux-stericsson-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/h8300/platform/h8300h/generic/timer.c')
-rw-r--r--arch/h8300/platform/h8300h/generic/timer.c96
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;
+}