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authorMike Frysinger <vapier@gentoo.org>2010-10-22 01:11:21 -0400
committerMike Frysinger <vapier@gentoo.org>2010-10-25 04:54:32 -0400
commit61c16b5c7414b6d0511dc384e0ea994e250e6339 (patch)
tree6d3c198f42c931f4ecf7d3b0b5c668d582a1b794 /arch/blackfin/include
parent02460d08930656b3a50381cfb119864efcd4eef9 (diff)
Blackfin: bfin_twi.h: start a common TWI header
Start one place for TWI definitions. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/include')
-rw-r--r--arch/blackfin/include/asm/bfin_twi.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/bfin_twi.h b/arch/blackfin/include/asm/bfin_twi.h
new file mode 100644
index 000000000000..cc155e14e55c
--- /dev/null
+++ b/arch/blackfin/include/asm/bfin_twi.h
@@ -0,0 +1,43 @@
1/*
2 * bfin_twi.h - interface to Blackfin TWIs
3 *
4 * Copyright 2005-2010 Analog Devices Inc.
5 *
6 * Licensed under the GPL-2 or later.
7 */
8
9#ifndef __ASM_BFIN_TWI_H__
10#define __ASM_BFIN_TWI_H__
11
12#include <linux/types.h>
13
14/*
15 * All Blackfin system MMRs are padded to 32bits even if the register
16 * itself is only 16bits. So use a helper macro to streamline this.
17 */
18#define __BFP(m) u16 m; u16 __pad_##m
19
20/*
21 * bfin twi registers layout
22 */
23struct bfin_twi_regs {
24 __BFP(clkdiv);
25 __BFP(control);
26 __BFP(slave_ctl);
27 __BFP(slave_stat);
28 __BFP(slave_addr);
29 __BFP(master_ctl);
30 __BFP(master_stat);
31 __BFP(master_addr);
32 __BFP(int_stat);
33 __BFP(int_mask);
34 __BFP(fifo_ctl);
35 __BFP(fifo_stat);
36 u32 __pad[20];
37 __BFP(xmt_data8);
38 __BFP(xmt_data16);
39 __BFP(rcv_data8);
40 __BFP(rcv_data16);
41};
42
43#endif