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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 <[email protected]>
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
21 struct __packed tcan4x5x_buf_cmd {
22         u8 cmd;
23         __be16 addr;
24         u8 len;
25 };
26
27 struct tcan4x5x_map_buf {
28         struct tcan4x5x_buf_cmd cmd;
29         u8 data[256 * sizeof(u32)];
30 } ____cacheline_aligned;
31
32 struct 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
47 static inline void
48 tcan4x5x_spi_cmd_set_len(struct tcan4x5x_buf_cmd *cmd, u8 len)
49 {
50         /* number of u32 */
51         cmd->len = len >> 2;
52 }
53
54 int tcan4x5x_regmap_init(struct tcan4x5x_priv *priv);
55
56 #endif
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