1/* SPDX-License-Identifier: GPL-2.0
 2 *
 3 * tcan4x5x - Texas Instruments TCAN4x5x Family CAN controller driver
 4 *
 5 * Copyright (c) 2020 Pengutronix,
 6 *                    Marc Kleine-Budde <kernel@pengutronix.de>
 7 */
 8
 9#ifndef _TCAN4X5X_H
10#define _TCAN4X5X_H
11
12#include <linux/gpio/consumer.h>
13#include <linux/regmap.h>
14#include <linux/regulator/consumer.h>
15#include <linux/spi/spi.h>
16
17#include "m_can.h"
18
19#define TCAN4X5X_SANITIZE_SPI 1
20
21struct __packed tcan4x5x_buf_cmd {
22	u8 cmd;
23	__be16 addr;
24	u8 len;
25};
26
27struct tcan4x5x_map_buf {
28	struct tcan4x5x_buf_cmd cmd;
29	u8 data[256 * sizeof(u32)];
30} ____cacheline_aligned;
31
32struct tcan4x5x_priv {
33	struct m_can_classdev cdev;
34
35	struct regmap *regmap;
36	struct spi_device *spi;
37
38	struct gpio_desc *reset_gpio;
39	struct gpio_desc *device_wake_gpio;
40	struct gpio_desc *device_state_gpio;
41	struct regulator *power;
42
43	struct tcan4x5x_map_buf map_buf_rx;
44	struct tcan4x5x_map_buf map_buf_tx;
45};
46
47static inline void
48tcan4x5x_spi_cmd_set_len(struct tcan4x5x_buf_cmd *cmd, u8 len)
49{
50	/* number of u32 */
51	cmd->len = len >> 2;
52}
53
54int tcan4x5x_regmap_init(struct tcan4x5x_priv *priv);
55
56#endif