Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/* Header File for Loongson SPI Driver. */
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/* Copyright (C) 2023 Loongson Technology Corporation Limited */
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#ifndef __LINUX_SPI_LOONGSON_H
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#define __LINUX_SPI_LOONGSON_H
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#include <linux/bits.h>
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#include <linux/pm.h>
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#include <linux/types.h>
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#define LOONGSON_SPI_SPCR_REG 0x00
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#define LOONGSON_SPI_SPSR_REG 0x01
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#define LOONGSON_SPI_FIFO_REG 0x02
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#define LOONGSON_SPI_SPER_REG 0x03
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#define LOONGSON_SPI_PARA_REG 0x04
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#define LOONGSON_SPI_SFCS_REG 0x05
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#define LOONGSON_SPI_TIMI_REG 0x06
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/* Bits definition for Loongson SPI register */
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#define LOONGSON_SPI_PARA_MEM_EN BIT(0)
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#define LOONGSON_SPI_SPCR_CPHA BIT(2)
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#define LOONGSON_SPI_SPCR_CPOL BIT(3)
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#define LOONGSON_SPI_SPCR_SPE BIT(6)
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#define LOONGSON_SPI_SPSR_RFEMPTY BIT(0)
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#define LOONGSON_SPI_SPSR_WCOL BIT(6)
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#define LOONGSON_SPI_SPSR_SPIF BIT(7)
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struct device;
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struct spi_controller;
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struct loongson_spi {
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struct spi_controller *controller;
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void __iomem *base;
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int cs_active;
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unsigned int hz;
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unsigned char spcr;
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unsigned char sper;
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unsigned char spsr;
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unsigned char para;
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unsigned char sfcs;
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unsigned char timi;
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unsigned int mode;
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u64 clk_rate;
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};
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int loongson_spi_init_controller(struct device *dev, void __iomem *reg);
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extern const struct dev_pm_ops loongson_spi_dev_pm_ops;
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#endif /* __LINUX_SPI_LOONGSON_H */
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