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bsps/xilinx_zynq: Add SPI driver for cadence-spi

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Updates #4320
This commit is contained in:
Jan Sommer
2020-12-02 13:30:03 +01:00
parent 14bb077059
commit cc825d0322
3 changed files with 591 additions and 0 deletions
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84
bsps/include/dev/spi/cadence-spi-regs.h Normal file
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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2021 Jan Sommer, German Aerospace Center (DLR)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LIBBSP_ARM_XILINX_ZYNQ_CADENCE_SPI_REGS_H
#define LIBBSP_ARM_XILINX_ZYNQ_CADENCE_SPI_REGS_H
#include <bsp/utility.h>
typedef struct {
uint32_t config;
#define CADENCE_SPI_CONFIG_MODEFAIL_EN BSP_BIT32(17)
#define CADENCE_SPI_CONFIG_MANSTRT BSP_BIT32(16)
#define CADENCE_SPI_CONFIG_MANSTRT_EN BSP_BIT32(15)
#define CADENCE_SPI_CONFIG_MANUAL_CS BSP_BIT32(14)
#define CADENCE_SPI_CONFIG_CS(val) BSP_FLD32(val, 10, 13)
#define CADENCE_SPI_CONFIG_CS_GET(reg) BSP_FLD32GET(reg, 10, 13)
#define CADENCE_SPI_CONFIG_CS_SET(reg, val) BSP_FLD32SET(reg, val, 10, 13)
#define CADENCE_SPI_CONFIG_PERI_SEL BSP_BIT32(9)
#define CADENCE_SPI_CONFIG_REF_CLK BSP_BIT32(8)
#define CADENCE_SPI_CONFIG_BAUD_DIV(val) BSP_FLD32(val, 3, 5)
#define CADENCE_SPI_CONFIG_BAUD_DIV_GET(reg) BSP_FLD32GET(reg, 3, 5)
#define CADENCE_SPI_CONFIG_BAUD_DIV_SET(reg, val) BSP_FLD32SET(reg, val, 3, 5)
#define CADENCE_SPI_CONFIG_CLK_PH BSP_BIT32(2)
#define CADENCE_SPI_CONFIG_CLK_POL BSP_BIT32(1)
#define CADENCE_SPI_CONFIG_MSTREN BSP_BIT32(0)
uint32_t irqstatus;
uint32_t irqenable;
uint32_t irqdisable;
uint32_t irqmask;
#define CADENCE_SPI_IXR_TXUF BSP_BIT32(6)
#define CADENCE_SPI_IXR_RXFULL BSP_BIT32(5)
#define CADENCE_SPI_IXR_RXNEMPTY BSP_BIT32(4)
#define CADENCE_SPI_IXR_TXFULL BSP_BIT32(3)
#define CADENCE_SPI_IXR_TXOW BSP_BIT32(2)
#define CADENCE_SPI_IXR_MODF BSP_BIT32(1)
#define CADENCE_SPI_IXR_RXOVR BSP_BIT32(0)
uint32_t spienable;
#define CADENCE_SPI_EN BSP_BIT32(0)
uint32_t delay;
#define CADENCE_SPI_DELAY_DNSS(val) BSP_FLD32(val, 24, 31)
#define CADENCE_SPI_DELAY_DNSS_GET(reg) BSP_FLD32GET(reg, 24, 31)
#define CADENCE_SPI_DELAY_DNSS_SET(reg, val) BSP_FLD32SET(reg, val, 24, 31)
#define CADENCE_SPI_DELAY_DBTWN(val) BSP_FLD32(val, 16, 23)
#define CADENCE_SPI_DELAY_DBTWN_GET(reg) BSP_FLD32GET(reg, 16, 23)
#define CADENCE_SPI_DELAY_DBTWN_SET(reg, val) BSP_FLD32SET(reg, val, 16, 23)
#define CADENCE_SPI_DELAY_DAFTER(val) BSP_FLD32(val, 8, 15)
#define CADENCE_SPI_DELAY_DAFTER_GET(reg) BSP_FLD32GET(reg, 8, 15)
#define CADENCE_SPI_DELAY_DAFTER_SET(reg, val) BSP_FLD32SET(reg, val, 8, 15)
#define CADENCE_SPI_DELAY_DINT(val) BSP_FLD32(val, 0, 7)
#define CADENCE_SPI_DELAY_DINT_GET(reg) BSP_FLD32GET(reg, 0, 7)
#define CADENCE_SPI_DELAY_DINT_SET(reg, val) BSP_FLD32SET(reg, val, 0, 7)
uint32_t txdata;
uint32_t rxdata;
uint32_t slave_idle_count;
uint32_t txthreshold;
uint32_t rxthreshold;
uint32_t moduleid;
} cadence_spi;
#endif /* LIBBSP_ARM_XILINX_ZYNQ_CADENCE_SPI_REGS_H */

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bsps/include/dev/spi/cadence-spi.h Normal file
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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2021 Jan Sommer, German Aerospace Center (DLR)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LIBBSP_ARM_XILINX_ZYNQ_CADENCE_SPI_H
#define LIBBSP_ARM_XILINX_ZYNQ_CADENCE_SPI_H
#include <rtems.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* Register the cadence-spi device with rtems
*
* @param bus_path path of the new device (e.g. /dev/spi0)
* @register_base Address of the first (i.e. config) register
* @input_clock Configured frequency of the input clock
*
* @return RTEMS_SUCCESSFUL on success, negative number on failure
*
* Note: The spi frequencies the cadence spi device can achieve
* are the @p input_clock divided by a power of 2 between
* 4 and 256.
* The driver tries to find a divider which yields a spi
* frequency equal to or lower than the desired bus frequency.
*/
int spi_bus_register_cadence(
const char *bus_path,
uintptr_t register_base,
uint32_t input_clock,
rtems_vector_number irq
);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* LIBBSP_ARM_XILINX_ZYNQ_CADENCE_SPI_H */