2 * arch/arm/mach-at91/include/mach/at91_spi.h
4 * Copyright (C) 2005 Ivan Kokshaysky
5 * Copyright (C) SAN People
7 * Serial Peripheral Interface (SPI) registers.
8 * Based on AT91RM9200 datasheet revision E.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
19 #define AT91_SPI_CR 0x00 /* Control Register */
20 #define AT91_SPI_SPIEN (1 << 0) /* SPI Enable */
21 #define AT91_SPI_SPIDIS (1 << 1) /* SPI Disable */
22 #define AT91_SPI_SWRST (1 << 7) /* SPI Software Reset */
23 #define AT91_SPI_LASTXFER (1 << 24) /* Last Transfer [SAM9261 only] */
25 #define AT91_SPI_MR 0x04 /* Mode Register */
26 #define AT91_SPI_MSTR (1 << 0) /* Master/Slave Mode */
27 #define AT91_SPI_PS (1 << 1) /* Peripheral Select */
28 #define AT91_SPI_PS_FIXED (0 << 1)
29 #define AT91_SPI_PS_VARIABLE (1 << 1)
30 #define AT91_SPI_PCSDEC (1 << 2) /* Chip Select Decode */
31 #define AT91_SPI_DIV32 (1 << 3) /* Clock Selection [AT91RM9200 only] */
32 #define AT91_SPI_MODFDIS (1 << 4) /* Mode Fault Detection */
33 #define AT91_SPI_LLB (1 << 7) /* Local Loopback Enable */
34 #define AT91_SPI_PCS (0xf << 16) /* Peripheral Chip Select */
35 #define AT91_SPI_DLYBCS (0xff << 24) /* Delay Between Chip Selects */
37 #define AT91_SPI_RDR 0x08 /* Receive Data Register */
38 #define AT91_SPI_RD (0xffff << 0) /* Receive Data */
39 #define AT91_SPI_PCS (0xf << 16) /* Peripheral Chip Select */
41 #define AT91_SPI_TDR 0x0c /* Transmit Data Register */
42 #define AT91_SPI_TD (0xffff << 0) /* Transmit Data */
43 #define AT91_SPI_PCS (0xf << 16) /* Peripheral Chip Select */
44 #define AT91_SPI_LASTXFER (1 << 24) /* Last Transfer [SAM9261 only] */
46 #define AT91_SPI_SR 0x10 /* Status Register */
47 #define AT91_SPI_RDRF (1 << 0) /* Receive Data Register Full */
48 #define AT91_SPI_TDRE (1 << 1) /* Transmit Data Register Full */
49 #define AT91_SPI_MODF (1 << 2) /* Mode Fault Error */
50 #define AT91_SPI_OVRES (1 << 3) /* Overrun Error Status */
51 #define AT91_SPI_ENDRX (1 << 4) /* End of RX buffer */
52 #define AT91_SPI_ENDTX (1 << 5) /* End of TX buffer */
53 #define AT91_SPI_RXBUFF (1 << 6) /* RX Buffer Full */
54 #define AT91_SPI_TXBUFE (1 << 7) /* TX Buffer Empty */
55 #define AT91_SPI_NSSR (1 << 8) /* NSS Rising [SAM9261 only] */
56 #define AT91_SPI_TXEMPTY (1 << 9) /* Transmission Register Empty [SAM9261 only] */
57 #define AT91_SPI_SPIENS (1 << 16) /* SPI Enable Status */
59 #define AT91_SPI_IER 0x14 /* Interrupt Enable Register */
60 #define AT91_SPI_IDR 0x18 /* Interrupt Disable Register */
61 #define AT91_SPI_IMR 0x1c /* Interrupt Mask Register */
63 #define AT91_SPI_CSR(n) (0x30 + ((n) * 4)) /* Chip Select Registers 0-3 */
64 #define AT91_SPI_CPOL (1 << 0) /* Clock Polarity */
65 #define AT91_SPI_NCPHA (1 << 1) /* Clock Phase */
66 #define AT91_SPI_CSAAT (1 << 3) /* Chip Select Active After Transfer [SAM9261 only] */
67 #define AT91_SPI_BITS (0xf << 4) /* Bits Per Transfer */
68 #define AT91_SPI_BITS_8 (0 << 4)
69 #define AT91_SPI_BITS_9 (1 << 4)
70 #define AT91_SPI_BITS_10 (2 << 4)
71 #define AT91_SPI_BITS_11 (3 << 4)
72 #define AT91_SPI_BITS_12 (4 << 4)
73 #define AT91_SPI_BITS_13 (5 << 4)
74 #define AT91_SPI_BITS_14 (6 << 4)
75 #define AT91_SPI_BITS_15 (7 << 4)
76 #define AT91_SPI_BITS_16 (8 << 4)
77 #define AT91_SPI_SCBR (0xff << 8) /* Serial Clock Baud Rate */
78 #define AT91_SPI_DLYBS (0xff << 16) /* Delay before SPCK */
79 #define AT91_SPI_DLYBCT (0xff << 24) /* Delay between Consecutive Transfers */
