linux/drivers/net/can/spi/mcp251xfd/mcp251xfd-ring.c

// SPDX-License-Identifier: GPL-2.0
//
// mcp251xfd - Microchip MCP251xFD Family CAN controller driver
//
// Copyright (c) 2019, 2020, 2021 Pengutronix,
//               Marc Kleine-Budde <[email protected]>
//
// Based on:
//
// CAN bus driver for Microchip 25XXFD CAN Controller with SPI Interface
//
// Copyright (c) 2019 Martin Sperl <[email protected]>
//

#include <asm/unaligned.h>

#include "mcp251xfd.h"
#include "mcp251xfd-ram.h"

static inline u8
mcp251xfd_cmd_prepare_write_reg(const struct mcp251xfd_priv *priv,
				union mcp251xfd_write_reg_buf *write_reg_buf,
				const u16 reg, const u32 mask, const u32 val)
{ … }

static void
mcp251xfd_ring_init_tef(struct mcp251xfd_priv *priv, u16 *base)
{ … }

static void
mcp251xfd_tx_ring_init_tx_obj(const struct mcp251xfd_priv *priv,
			      const struct mcp251xfd_tx_ring *ring,
			      struct mcp251xfd_tx_obj *tx_obj,
			      const u8 rts_buf_len,
			      const u8 n)
{ … }

static void
mcp251xfd_ring_init_tx(struct mcp251xfd_priv *priv, u16 *base, u8 *fifo_nr)
{ … }

static void
mcp251xfd_ring_init_rx(struct mcp251xfd_priv *priv, u16 *base, u8 *fifo_nr)
{ … }

int mcp251xfd_ring_init(struct mcp251xfd_priv *priv)
{ … }

void mcp251xfd_ring_free(struct mcp251xfd_priv *priv)
{ … }

static enum hrtimer_restart mcp251xfd_rx_irq_timer(struct hrtimer *t)
{ … }

static enum hrtimer_restart mcp251xfd_tx_irq_timer(struct hrtimer *t)
{ … }

const struct can_ram_config mcp251xfd_ram_config = …;

int mcp251xfd_ring_alloc(struct mcp251xfd_priv *priv)
{ … }