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/regmap.h> 15 #include <linux/regulator/consumer.h> 16 #include <linux/spi/spi.h> 17 18 #include "m_can.h" 19 20 #define TCAN4X5X_SANITIZE_SPI 1 21 22 struct __packed tcan4x5x_buf_cmd { 23 u8 cmd; 24 __be16 addr; 25 u8 len; 26 }; 27 28 struct tcan4x5x_map_buf { 29 struct tcan4x5x_buf_cmd cmd; 30 u8 data[256 * sizeof(u32)]; 31 } ____cacheline_aligned; 32 33 struct tcan4x5x_priv { 34 struct m_can_classdev cdev; 35 36 struct regmap *regmap; 37 struct spi_device *spi; 38 39 struct gpio_desc *reset_gpio; 40 struct gpio_desc *device_wake_gpio; 41 struct gpio_desc *device_state_gpio; 42 struct regulator *power; 43 44 struct tcan4x5x_map_buf map_buf_rx; 45 struct tcan4x5x_map_buf map_buf_tx; 46 }; 47 48 static inline void 49 tcan4x5x_spi_cmd_set_len(struct tcan4x5x_buf_cmd *cmd, u8 len) 50 { 51 /* number of u32 */ 52 cmd->len = len >> 2; 53 } 54 55 int tcan4x5x_regmap_init(struct tcan4x5x_priv *priv); 56 57 #endif 58