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