xref: /linux/drivers/net/can/m_can/tcan4x5x.h (revision 8be98d2f2a0a262f8bf8a0bc1fdf522b3c7aab17)

/* SPDX-License-Identifier: GPL-2.0
 *
 * tcan4x5x - Texas Instruments TCAN4x5x Family CAN controller driver
 *
 * Copyright (c) 2020 Pengutronix,
 *                    Marc Kleine-Budde <kernel@pengutronix.de>
 */

#ifndef _TCAN4X5X_H
#define _TCAN4X5X_H

#include <linux/gpio/consumer.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>

#include "m_can.h"

#define TCAN4X5X_SANITIZE_SPI 1

struct __packed tcan4x5x_buf_cmd {
	u8 cmd;
	__be16 addr;
	u8 len;
};

struct tcan4x5x_map_buf {
	struct tcan4x5x_buf_cmd cmd;
	u8 data[256 * sizeof(u32)];
} ____cacheline_aligned;

struct tcan4x5x_priv {
	struct m_can_classdev cdev;

	struct regmap *regmap;
	struct spi_device *spi;

	struct gpio_desc *reset_gpio;
	struct gpio_desc *device_wake_gpio;
	struct gpio_desc *device_state_gpio;
	struct regulator *power;

	struct tcan4x5x_map_buf map_buf_rx;
	struct tcan4x5x_map_buf map_buf_tx;
};

static inline void
tcan4x5x_spi_cmd_set_len(struct tcan4x5x_buf_cmd *cmd, u8 len)
{
	/* number of u32 */
	cmd->len = len >> 2;
}

int tcan4x5x_regmap_init(struct tcan4x5x_priv *priv);

#endif