Title: [9286] trunk/arch/blackfin/include/asm/bfin_twi.h: bfin: start a common twi header
- Revision
- 9286
- Author
- vapier
- Date
- 2010-10-22 01:11:21 -0400 (Fri, 22 Oct 2010)
Log Message
bfin: start a common twi header
Added Paths
Diff
Added: trunk/arch/blackfin/include/asm/bfin_twi.h (0 => 9286)
--- trunk/arch/blackfin/include/asm/bfin_twi.h (rev 0)
+++ trunk/arch/blackfin/include/asm/bfin_twi.h 2010-10-22 05:11:21 UTC (rev 9286)
@@ -0,0 +1,43 @@
+/*
+ * bfin_twi.h - interface to Blackfin TWIs
+ *
+ * Copyright 2005-2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __ASM_BFIN_TWI_H__
+#define __ASM_BFIN_TWI_H__
+
+#include <linux/types.h>
+
+/*
+ * All Blackfin system MMRs are padded to 32bits even if the register
+ * itself is only 16bits. So use a helper macro to streamline this.
+ */
+#define __BFP(m) u16 m; u16 __pad_##m
+
+/*
+ * bfin twi registers layout
+ */
+struct bfin_twi_regs {
+ __BFP(clkdiv);
+ __BFP(control);
+ __BFP(slave_ctl);
+ __BFP(slave_stat);
+ __BFP(slave_addr);
+ __BFP(master_ctl);
+ __BFP(master_stat);
+ __BFP(master_addr);
+ __BFP(int_stat);
+ __BFP(int_mask);
+ __BFP(fifo_ctl);
+ __BFP(fifo_stat);
+ u32 __pad[20];
+ __BFP(xmt_data8);
+ __BFP(xmt_data16);
+ __BFP(rcv_data8);
+ __BFP(rcv_data16);
+};
+
+#endif
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