83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
123 lines
5.0 KiB
C
123 lines
5.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* [origin: Linux kernel include/asm-arm/arch-at91/at91_spi.h]
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*
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* Copyright (C) 2005 Ivan Kokshaysky
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* Copyright (C) SAN People
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*
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* Serial Peripheral Interface (SPI) registers.
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* Based on AT91RM9200 datasheet revision E.
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*/
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#ifndef AT91_SPI_H
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#define AT91_SPI_H
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#include <asm/arch/at91_pdc.h>
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typedef struct at91_spi {
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u32 cr; /* 0x00 Control Register */
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u32 mr; /* 0x04 Mode Register */
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u32 rdr; /* 0x08 Receive Data Register */
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u32 tdr; /* 0x0C Transmit Data Register */
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u32 sr; /* 0x10 Status Register */
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u32 ier; /* 0x14 Interrupt Enable Register */
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u32 idr; /* 0x18 Interrupt Disable Register */
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u32 imr; /* 0x1C Interrupt Mask Register */
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u32 reserve1[4];
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u32 csr[4]; /* 0x30 Chip Select Register 0-3 */
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u32 reserve2[48];
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at91_pdc_t pdc;
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} at91_spi_t;
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#ifdef CONFIG_ATMEL_LEGACY
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#define AT91_SPI_CR 0x00 /* Control Register */
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#define AT91_SPI_SPIEN (1 << 0) /* SPI Enable */
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#define AT91_SPI_SPIDIS (1 << 1) /* SPI Disable */
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#define AT91_SPI_SWRST (1 << 7) /* SPI Software Reset */
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#define AT91_SPI_LASTXFER (1 << 24) /* Last Transfer [SAM9261 only] */
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#define AT91_SPI_MR 0x04 /* Mode Register */
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#define AT91_SPI_MSTR (1 << 0) /* Master/Slave Mode */
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#define AT91_SPI_PS (1 << 1) /* Peripheral Select */
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#define AT91_SPI_PS_FIXED (0 << 1)
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#define AT91_SPI_PS_VARIABLE (1 << 1)
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#define AT91_SPI_PCSDEC (1 << 2) /* Chip Select Decode */
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#define AT91_SPI_DIV32 (1 << 3) /* Clock Selection [AT91RM9200 only] */
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#define AT91_SPI_MODFDIS (1 << 4) /* Mode Fault Detection */
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#define AT91_SPI_LLB (1 << 7) /* Local Loopback Enable */
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#define AT91_SPI_PCS (0xf << 16) /* Peripheral Chip Select */
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#define AT91_SPI_DLYBCS (0xff << 24) /* Delay Between Chip Selects */
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#define AT91_SPI_RDR 0x08 /* Receive Data Register */
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#define AT91_SPI_RD (0xffff << 0) /* Receive Data */
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#define AT91_SPI_PCS (0xf << 16) /* Peripheral Chip Select */
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#define AT91_SPI_TDR 0x0c /* Transmit Data Register */
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#define AT91_SPI_TD (0xffff << 0) /* Transmit Data */
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#define AT91_SPI_PCS (0xf << 16) /* Peripheral Chip Select */
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#define AT91_SPI_LASTXFER (1 << 24) /* Last Transfer [SAM9261 only] */
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#define AT91_SPI_SR 0x10 /* Status Register */
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#define AT91_SPI_RDRF (1 << 0) /* Receive Data Register Full */
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#define AT91_SPI_TDRE (1 << 1) /* Transmit Data Register Full */
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#define AT91_SPI_MODF (1 << 2) /* Mode Fault Error */
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#define AT91_SPI_OVRES (1 << 3) /* Overrun Error Status */
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#define AT91_SPI_ENDRX (1 << 4) /* End of RX buffer */
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#define AT91_SPI_ENDTX (1 << 5) /* End of TX buffer */
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#define AT91_SPI_RXBUFF (1 << 6) /* RX Buffer Full */
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#define AT91_SPI_TXBUFE (1 << 7) /* TX Buffer Empty */
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#define AT91_SPI_NSSR (1 << 8) /* NSS Rising [SAM9261 only] */
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#define AT91_SPI_TXEMPTY (1 << 9) /* Transmission Register Empty [SAM9261 only] */
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#define AT91_SPI_SPIENS (1 << 16) /* SPI Enable Status */
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#define AT91_SPI_IER 0x14 /* Interrupt Enable Register */
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#define AT91_SPI_IDR 0x18 /* Interrupt Disable Register */
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#define AT91_SPI_IMR 0x1c /* Interrupt Mask Register */
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#define AT91_SPI_CSR(n) (0x30 + ((n) * 4)) /* Chip Select Registers 0-3 */
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#define AT91_SPI_CPOL (1 << 0) /* Clock Polarity */
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#define AT91_SPI_NCPHA (1 << 1) /* Clock Phase */
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#define AT91_SPI_CSAAT (1 << 3) /* Chip Select Active After Transfer [SAM9261 only] */
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#define AT91_SPI_BITS (0xf << 4) /* Bits Per Transfer */
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#define AT91_SPI_BITS_8 (0 << 4)
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#define AT91_SPI_BITS_9 (1 << 4)
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#define AT91_SPI_BITS_10 (2 << 4)
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#define AT91_SPI_BITS_11 (3 << 4)
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#define AT91_SPI_BITS_12 (4 << 4)
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#define AT91_SPI_BITS_13 (5 << 4)
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#define AT91_SPI_BITS_14 (6 << 4)
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#define AT91_SPI_BITS_15 (7 << 4)
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#define AT91_SPI_BITS_16 (8 << 4)
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#define AT91_SPI_SCBR (0xff << 8) /* Serial Clock Baud Rate */
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#define AT91_SPI_DLYBS (0xff << 16) /* Delay before SPCK */
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#define AT91_SPI_DLYBCT (0xff << 24) /* Delay between Consecutive Transfers */
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#define AT91_SPI_RPR 0x0100 /* Receive Pointer Register */
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#define AT91_SPI_RCR 0x0104 /* Receive Counter Register */
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#define AT91_SPI_TPR 0x0108 /* Transmit Pointer Register */
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#define AT91_SPI_TCR 0x010c /* Transmit Counter Register */
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#define AT91_SPI_RNPR 0x0110 /* Receive Next Pointer Register */
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#define AT91_SPI_RNCR 0x0114 /* Receive Next Counter Register */
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#define AT91_SPI_TNPR 0x0118 /* Transmit Next Pointer Register */
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#define AT91_SPI_TNCR 0x011c /* Transmit Next Counter Register */
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#define AT91_SPI_PTCR 0x0120 /* PDC Transfer Control Register */
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#define AT91_SPI_RXTEN (0x1 << 0) /* Receiver Transfer Enable */
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#define AT91_SPI_RXTDIS (0x1 << 1) /* Receiver Transfer Disable */
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#define AT91_SPI_TXTEN (0x1 << 8) /* Transmitter Transfer Enable */
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#define AT91_SPI_TXTDIS (0x1 << 9) /* Transmitter Transfer Disable */
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#define AT91_SPI_PTSR 0x0124 /* PDC Transfer Status Register */
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#endif /* CONFIG_ATMEL_LEGACY */
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#endif
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