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spi-fsl-spi.h


products/Sources/formale Sprachen/C/Linux/drivers/spi/spi-fsl-spi.h

/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Freescale SPI controller driver. * * Maintainer: Kumar Gala * * Copyright (C) 2006 Polycom, Inc. * Copyright 2010 Freescale Semiconductor, Inc. * * CPM SPI and QE buffer descriptors mode support: * Copyright (c) 2009 MontaVista Software, Inc. * Author: Anton Vorontsov * * GRLIB support: * Copyright (c) 2012 Aeroflex Gaisler AB. * Author: Andreas Larsson */ #ifndef __SPI_FSL_SPI_H__ #define __SPI_FSL_SPI_H__ /* SPI Controller registers */ struct fsl_spi_reg { __be32 cap; /* TYPE_GRLIB specific */ u8 res1[0x1C]; __be32 mode; __be32 event; __be32 mask; __be32 command; __be32 transmit; __be32 receive; __be32 slvsel; /* TYPE_GRLIB specific */ }; /* SPI Controller mode register definitions */ #define SPMODE_LOOP (1 << 30) #define SPMODE_CI_INACTIVEHIGH (1 << 29) #define SPMODE_CP_BEGIN_EDGECLK (1 << 28) #define SPMODE_DIV16 (1 << 27) #define SPMODE_REV (1 << 26) #define SPMODE_MS (1 << 25) #define SPMODE_ENABLE (1 << 24) #define SPMODE_LEN(x) ((x) << 20) #define SPMODE_PM(x) ((x) << 16) #define SPMODE_OP (1 << 14) #define SPMODE_CG(x) ((x) << 7) /* TYPE_GRLIB SPI Controller capability register definitions */ #define SPCAP_SSEN(x) (((x) >> 16) & 0x1) #define SPCAP_SSSZ(x) (((x) >> 24) & 0xff) #define SPCAP_MAXWLEN(x) (((x) >> 20) & 0xf) /* * Default for SPI Mode: * SPI MODE 0 (inactive low, phase middle, MSB, 8-bit length, slow clk */ #define SPMODE_INIT_VAL (SPMODE_CI_INACTIVEHIGH | SPMODE_DIV16 | SPMODE_REV | \ SPMODE_MS | SPMODE_LEN(7) | SPMODE_PM(0xf)) /* SPIE register values */ #define SPIE_NE 0x00000200 /* Not empty */ #define SPIE_NF 0x00000100 /* Not full */ /* SPIM register values */ #define SPIM_NE 0x00000200 /* Not empty */ #define SPIM_NF 0x00000100 /* Not full */ #endif /* __SPI_FSL_SPI_H__ */

                                                                                                                                                                                                                                                                                                                                                                                                     

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