diff options
Diffstat (limited to 'include/asm-avr32/arch-at32ap/smc.h')
-rw-r--r-- | include/asm-avr32/arch-at32ap/smc.h | 60 |
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 --- /dev/null +++ b/include/asm-avr32/arch-at32ap/smc.h | |||
@@ -0,0 +1,60 @@ | |||
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 | */ | ||
18 | struct 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 | |||
57 | extern int smc_set_configuration(int cs, const struct smc_config *config); | ||
58 | extern struct smc_config *smc_get_configuration(int cs); | ||
59 | |||
60 | #endif /* __ARCH_AT32AP_SMC_H */ | ||