linux/drivers/spi/spi-ljca.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Intel La Jolla Cove Adapter USB-SPI driver
 *
 * Copyright (c) 2023, Intel Corporation.
 */

#include <linux/auxiliary_bus.h>
#include <linux/bitfield.h>
#include <linux/bits.h>
#include <linux/dev_printk.h>
#include <linux/module.h>
#include <linux/spi/spi.h>
#include <linux/usb/ljca.h>

#define LJCA_SPI_BUS_MAX_HZ …

#define LJCA_SPI_BUF_SIZE …
#define LJCA_SPI_MAX_XFER_SIZE …

#define LJCA_SPI_CLK_MODE_POLARITY …
#define LJCA_SPI_CLK_MODE_PHASE …

#define LJCA_SPI_XFER_INDICATOR_ID …
#define LJCA_SPI_XFER_INDICATOR_CMPL …
#define LJCA_SPI_XFER_INDICATOR_INDEX …

/* SPI commands */
enum ljca_spi_cmd { … };

enum { … };

enum { … };

enum { … };

struct ljca_spi_init_packet { … } __packed;

struct ljca_spi_xfer_packet { … } __packed;

struct ljca_spi_dev { … };

static int ljca_spi_read_write(struct ljca_spi_dev *ljca_spi, const u8 *w_data,
			       u8 *r_data, int len, int id, int complete,
			       int cmd)
{ … }

static int ljca_spi_init(struct ljca_spi_dev *ljca_spi, u8 div, u8 mode)
{ … }

static int ljca_spi_deinit(struct ljca_spi_dev *ljca_spi)
{ … }

static inline int ljca_spi_transfer(struct ljca_spi_dev *ljca_spi,
				    const u8 *tx_data, u8 *rx_data, u16 len)
{ … }

static int ljca_spi_transfer_one(struct spi_controller *controller,
				 struct spi_device *spi,
				 struct spi_transfer *xfer)
{ … }

static int ljca_spi_probe(struct auxiliary_device *auxdev,
			  const struct auxiliary_device_id *aux_dev_id)
{ … }

static void ljca_spi_dev_remove(struct auxiliary_device *auxdev)
{ … }

static int ljca_spi_dev_suspend(struct device *dev)
{ … }

static int ljca_spi_dev_resume(struct device *dev)
{ … }

static const struct dev_pm_ops ljca_spi_pm = …;

static const struct auxiliary_device_id ljca_spi_id_table[] = …;
MODULE_DEVICE_TABLE(auxiliary, ljca_spi_id_table);

static struct auxiliary_driver ljca_spi_driver = …;
module_auxiliary_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_AUTHOR(…) …;
MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_IMPORT_NS(…);