summaryrefslogtreecommitdiffstats
path: root/arch/arm/include/asm/arch-at91/at91_pit.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/include/asm/arch-at91/at91_pit.h')
-rw-r--r--arch/arm/include/asm/arch-at91/at91_pit.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-at91/at91_pit.h b/arch/arm/include/asm/arch-at91/at91_pit.h
new file mode 100644
index 0000000..61aca79
--- /dev/null
+++ b/arch/arm/include/asm/arch-at91/at91_pit.h
@@ -0,0 +1,47 @@
+/*
+ * [origin: Linux kernel include/asm-arm/arch-at91/at91_pit.h]
+ *
+ * Copyright (C) 2007 Andrew Victor
+ * Copyright (C) 2007 Atmel Corporation.
+ *
+ * Periodic Interval Timer (PIT) - System peripherals regsters.
+ * Based on AT91SAM9261 datasheet revision D.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef AT91_PIT_H
+#define AT91_PIT_H
+
+typedef struct at91_pit {
+ u32 mr; /* 0x00 Mode Register */
+ u32 sr; /* 0x04 Status Register */
+ u32 pivr; /* 0x08 Periodic Interval Value Register */
+ u32 piir; /* 0x0C Periodic Interval Image Register */
+} at91_pit_t;
+
+#define AT91_PIT_MR_IEN 0x02000000
+#define AT91_PIT_MR_EN 0x01000000
+#define AT91_PIT_MR_PIV_MASK(x) (x & 0x000fffff)
+#define AT91_PIT_MR_PIV(x) (x & AT91_PIT_MR_PIV_MASK)
+
+#ifdef CONFIG_AT91_LEGACY
+
+#define AT91_PIT_MR (AT91_PIT + 0x00) /* Mode Register */
+#define AT91_PIT_PITIEN (1 << 25) /* Timer Interrupt Enable */
+#define AT91_PIT_PITEN (1 << 24) /* Timer Enabled */
+#define AT91_PIT_PIV (0xfffff) /* Periodic Interval Value */
+
+#define AT91_PIT_SR (AT91_PIT + 0x04) /* Status Register */
+#define AT91_PIT_PITS (1 << 0) /* Timer Status */
+
+#define AT91_PIT_PIVR (AT91_PIT + 0x08) /* Periodic Interval Value Register */
+#define AT91_PIT_PIIR (AT91_PIT + 0x0c) /* Periodic Interval Image Register */
+#define AT91_PIT_PICNT (0xfff << 20) /* Interval Counter */
+#define AT91_PIT_CPIV (0xfffff) /* Inverval Value */
+
+#endif /* CONFIG_AT91_LEGACY */
+#endif
OpenPOWER on IntegriCloud