| 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 | |
| 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 |
| 57 |