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-rw-r--r--include/asm-avr32/arch-at32ap/smc.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/include/asm-avr32/arch-at32ap/smc.h b/include/asm-avr32/arch-at32ap/smc.h
new file mode 100644
index 000000000000..3732b328303d
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+++ b/include/asm-avr32/arch-at32ap/smc.h
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1/*
2 * Static Memory Controller for AT32 chips
3 *
4 * Copyright (C) 2006 Atmel Corporation
5 *
6 * Inspired by the OMAP2 General-Purpose Memory Controller interface
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12#ifndef __ARCH_AT32AP_SMC_H
13#define __ARCH_AT32AP_SMC_H
14
15/*
16 * All timing parameters are in nanoseconds.
17 */
18struct smc_config {
19 /* Delay from address valid to assertion of given strobe */
20 u16 ncs_read_setup;
21 u16 nrd_setup;
22 u16 ncs_write_setup;
23 u16 nwe_setup;
24
25 /* Pulse length of given strobe */
26 u16 ncs_read_pulse;
27 u16 nrd_pulse;
28 u16 ncs_write_pulse;
29 u16 nwe_pulse;
30
31 /* Total cycle length of given operation */
32 u16 read_cycle;
33 u16 write_cycle;
34
35 /* Bus width in bytes */
36 u8 bus_width;
37
38 /*
39 * 0: Data is sampled on rising edge of NCS
40 * 1: Data is sampled on rising edge of NRD
41 */
42 unsigned int nrd_controlled:1;
43
44 /*
45 * 0: Data is driven on falling edge of NCS
46 * 1: Data is driven on falling edge of NWR
47 */
48 unsigned int nwe_controlled:1;
49
50 /*
51 * 0: Byte select access type
52 * 1: Byte write access type
53 */
54 unsigned int byte_write:1;
55};
56
57extern int smc_set_configuration(int cs, const struct smc_config *config);
58extern struct smc_config *smc_get_configuration(int cs);
59
60#endif /* __ARCH_AT32AP_SMC_H */