drivers/net/can/m_can/tcan4x5x.h

   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