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/* SPDX-License-Identifier: GPL-2.0 */
/* CAN bus driver for Microchip 25XXFD CAN Controller with SPI Interface
*
* Copyright 2019 Martin Sperl <kernel@martin.sperl.org>
*/
#ifndef __MCP25XXFD_PRIV_H
#define __MCP25XXFD_PRIV_H
#include <linux/clk.h>
#include <linux/debugfs.h>
#include <linux/gpio/driver.h>
#include <linux/mutex.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>
#include "mcp25xxfd_regs.h"
/* some defines for the driver */
#define DEVICE_NAME "mcp25xxfd"
enum mcp25xxfd_model {
CAN_MCP2517FD = 0x2517,
CAN_MCP2518FD = 0x2518,
};
struct mcp25xxfd_can_priv;
struct mcp25xxfd_priv {
struct spi_device *spi;
struct clk *clk;
#ifdef CONFIG_GPIOLIB
struct gpio_chip gpio;
#endif
struct mcp25xxfd_can_priv *cpriv;
/* the actual model of the mcp25xxfd */
enum mcp25xxfd_model model;
/* full device name used for debugfs and interrupts */
char device_name[32];
/* everything clock related */
int clock_freq;
struct {
/* clock configuration */
int clock_pll;
int clock_div2;
int clock_odiv;
int clock_allways_on;
/* gpio related */
bool gpio_open_drain;
bool gpio0_xstandby;
} config;
/* lock for enabling/disabling the clock */
struct mutex clk_user_lock;
u32 clk_user_mask;
u32 clk_sleep_mask;
/* power related */
struct regulator *power;
/* the distinct spi_speeds to use for spi communication */
u32 spi_setup_speed_hz;
u32 spi_normal_speed_hz;
u32 spi_use_speed_hz;
/* spi-tx/rx buffers for efficient transfers
* used during setup and irq
*/
struct mutex spi_rxtx_lock; /* protects use of spi_tx/rx */
u8 spi_tx[MCP25XXFD_SRAM_SIZE];
u8 spi_rx[MCP25XXFD_SRAM_SIZE];
/* configuration registers */
struct {
u32 osc;
u32 iocon;
u32 crc;
u32 ecccon;
} regs;
/* debugfs related */
#ifdef CONFIG_CAN_MCP25XXFD_DEBUG_FS
struct dentry *debugfs_dir;
struct dentry *debugfs_regs_dir;
struct {
u64 spi_crc_read;
u64 spi_crc_read_split;
} stats;
#endif
};
#endif /* __MCP25XXFD_PRIV_H */
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