@@ -15,4 +15,6 @@ config CAN_MCP251X
Driver for the Microchip MCP251x and MCP25625 SPI CAN
controllers.
+source "drivers/net/can/spi/mcp25xxfd/Kconfig"
+
endmenu
@@ -6,3 +6,5 @@
obj-$(CONFIG_CAN_HI311X) += hi311x.o
obj-$(CONFIG_CAN_MCP251X) += mcp251x.o
+
+obj-y += mcp25xxfd/
new file mode 100644
@@ -0,0 +1,5 @@
+config CAN_MCP25XXFD
+ tristate "Microchip MCP25xxFD SPI CAN controllers"
+ depends on HAS_DMA
+ help
+ Driver for the Microchip MCP25XXFD SPI FD-CAN controller family.
new file mode 100644
@@ -0,0 +1,7 @@
+obj-$(CONFIG_CAN_MCP25XXFD) += mcp25xxfd.o
+mcp25xxfd-objs := mcp25xxfd_base.o
+mcp25xxfd-objs += mcp25xxfd_can.o
+mcp25xxfd-objs += mcp25xxfd_cmd.o
+mcp25xxfd-objs += mcp25xxfd_crc.o
+mcp25xxfd-objs += mcp25xxfd_ecc.o
+mcp25xxfd-objs += mcp25xxfd_int.o
new file mode 100644
@@ -0,0 +1,171 @@
+// 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>
+ */
+
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include "mcp25xxfd_base.h"
+#include "mcp25xxfd_can.h"
+#include "mcp25xxfd_cmd.h"
+#include "mcp25xxfd_ecc.h"
+#include "mcp25xxfd_int.h"
+#include "mcp25xxfd_priv.h"
+
+int mcp25xxfd_base_power_enable(struct regulator *reg, int enable)
+{
+ if (enable)
+ return regulator_enable(reg);
+ else
+ return regulator_disable(reg);
+}
+
+static const struct of_device_id mcp25xxfd_of_match[] = {
+ {
+ .compatible = "microchip,mcp2517fd",
+ .data = (void *)CAN_MCP2517FD,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, mcp25xxfd_of_match);
+
+static int mcp25xxfd_base_probe(struct spi_device *spi)
+{
+ const struct of_device_id *of_id =
+ of_match_device(mcp25xxfd_of_match, &spi->dev);
+ struct mcp25xxfd_priv *priv;
+ struct clk *clk;
+ enum mcp25xxfd_model model;
+ u32 freq;
+ int ret;
+
+ /* Check whether valid IRQ line is defined or not */
+ if (spi->irq <= 0) {
+ dev_err(&spi->dev, "no valid irq line defined: irq = %i\n",
+ spi->irq);
+ return -EINVAL;
+ }
+
+ priv = devm_kzalloc(&spi->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ spi_set_drvdata(spi, priv);
+ priv->spi = spi;
+
+ /* Assign device name */
+ snprintf(priv->device_name, sizeof(priv->device_name),
+ DEVICE_NAME "-%s", dev_name(&priv->spi->dev));
+
+ /* assign model from of or driver_data */
+ if (of_id)
+ model = (enum mcp25xxfd_model)of_id->data;
+ else
+ model = spi_get_device_id(spi)->driver_data;
+
+ clk = devm_clk_get(&spi->dev, NULL);
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ goto out_free;
+ }
+
+ freq = clk_get_rate(clk);
+ if (!(freq == CLOCK_4_MHZ || freq == CLOCK_10_MHZ ||
+ freq == CLOCK_40_MHZ)) {
+ ret = -ERANGE;
+ goto out_free;
+ }
+
+ ret = clk_prepare_enable(clk);
+ if (ret)
+ goto out_free;
+
+ priv->clk = clk;
+ priv->clock_freq = freq;
+
+ /* Configure the SPI bus */
+ spi->bits_per_word = 8;
+
+ /* The frequency of SCK has to be less than or equal to half the
+ * frequency of SYSCLK.
+ */
+ spi->max_speed_hz = freq / 2;
+ ret = spi_setup(spi);
+ if (ret)
+ goto out_clk;
+
+ priv->power = devm_regulator_get(&spi->dev, "vdd");
+ if (IS_ERR(priv->power)) {
+ if (PTR_ERR(priv->power) != -EPROBE_DEFER)
+ dev_err(&spi->dev, "failed to get vdd\n");
+ ret = PTR_ERR(priv->power);
+ goto out_clk;
+ }
+
+ ret = mcp25xxfd_base_power_enable(priv->power, 1);
+ if (ret)
+ goto out_clk;
+
+ /* disable interrupts */
+ ret = mcp25xxfd_int_enable(priv, false);
+ if (ret)
+ goto out_power;
+
+ /* setup ECC for SRAM */
+ ret = mcp25xxfd_ecc_enable(priv);
+ if (ret)
+ goto out_power;
+
+ dev_info(&spi->dev,
+ "MCP%04x successfully initialized.\n", model);
+ return 0;
+
+out_power:
+ mcp25xxfd_base_power_enable(priv->power, 0);
+out_clk:
+ clk_disable_unprepare(clk);
+out_free:
+ dev_err(&spi->dev, "Probe failed, err=%d\n", -ret);
+ return ret;
+}
+
+static int mcp25xxfd_base_remove(struct spi_device *spi)
+{
+ struct mcp25xxfd_priv *priv = spi_get_drvdata(spi);
+
+ mcp25xxfd_base_power_enable(priv->power, 0);
+ clk_disable_unprepare(priv->clk);
+
+ return 0;
+}
+
+static const struct spi_device_id mcp25xxfd_id_table[] = {
+ {
+ .name = "mcp2517fd",
+ .driver_data = (kernel_ulong_t)CAN_MCP2517FD,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(spi, mcp25xxfd_id_table);
+
+static struct spi_driver mcp25xxfd_can_driver = {
+ .driver = {
+ .name = DEVICE_NAME,
+ .of_match_table = mcp25xxfd_of_match,
+ },
+ .id_table = mcp25xxfd_id_table,
+ .probe = mcp25xxfd_base_probe,
+ .remove = mcp25xxfd_base_remove,
+};
+module_spi_driver(mcp25xxfd_can_driver);
+
+MODULE_AUTHOR("Martin Sperl <kernel@martin.sperl.org>");
+MODULE_DESCRIPTION("Microchip 25XXFD CAN driver");
+MODULE_LICENSE("GPL v2");
new file mode 100644
@@ -0,0 +1,14 @@
+/* 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_BASE_H
+#define __MCP25XXFD_BASE_H
+
+#include <linux/regulator/consumer.h>
+
+int mcp25xxfd_base_power_enable(struct regulator *reg, int enable);
+
+#endif /* __MCP25XXFD_BASE_H */
new file mode 100644
@@ -0,0 +1,141 @@
+// 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>
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/spi/spi.h>
+
+#include "mcp25xxfd_can.h"
+#include "mcp25xxfd_cmd.h"
+#include "mcp25xxfd_priv.h"
+#include "mcp25xxfd_regs.h"
+
+int mcp25xxfd_can_get_mode(struct mcp25xxfd_priv *priv, u32 *reg)
+{
+ int ret;
+
+ ret = mcp25xxfd_cmd_read(priv->spi, MCP25XXFD_CAN_CON, reg);
+ if (ret)
+ return ret;
+
+ return FIELD_GET(MCP25XXFD_CAN_CON_OPMOD_MASK, *reg);
+}
+
+static int mcp25xxfd_can_switch_mode(struct mcp25xxfd_priv *priv,
+ u32 *reg, int mode)
+{
+ int ret, i;
+
+ ret = mcp25xxfd_can_get_mode(priv, reg);
+ if (ret < 0)
+ return ret;
+
+ /* Compute the effective mode in osc*/
+ *reg &= ~(MCP25XXFD_CAN_CON_REQOP_MASK |
+ MCP25XXFD_CAN_CON_OPMOD_MASK);
+ *reg |= FIELD_PREP(MCP25XXFD_CAN_CON_REQOP_MASK, mode) |
+ FIELD_PREP(MCP25XXFD_CAN_CON_OPMOD_MASK, mode);
+
+ /* Request the mode switch */
+ ret = mcp25xxfd_cmd_write(priv->spi, MCP25XXFD_CAN_CON, *reg);
+ if (ret)
+ return ret;
+
+ /* Wait for 256 rounds to stabilize. This is essentially > 12ms
+ * at 1MHz
+ */
+ for (i = 0; i < 256; i++) {
+ /* get the mode */
+ ret = mcp25xxfd_can_get_mode(priv, reg);
+ if (ret < 0)
+ return ret;
+ /* check that we have reached our mode */
+ if (ret == mode)
+ return 0;
+ }
+
+ dev_err(&priv->spi->dev, "Failed to switch to mode %u in time\n",
+ mode);
+
+ return -ETIMEDOUT;
+}
+
+static int mcp25xxfd_can_probe_modeswitch(struct mcp25xxfd_priv *priv)
+{
+ u32 mode_data;
+ int ret;
+
+ /* We should be in config mode now, so move to INT_LOOPBACK */
+ ret = mcp25xxfd_can_switch_mode(priv, &mode_data,
+ MCP25XXFD_CAN_CON_MODE_INT_LOOPBACK);
+ if (ret) {
+ dev_err(&priv->spi->dev,
+ "Failed to switch into loopback mode\n");
+ return ret;
+ }
+
+ /* Switch back into config mode */
+ ret = mcp25xxfd_can_switch_mode(priv, &mode_data,
+ MCP25XXFD_CAN_CON_MODE_CONFIG);
+ if (ret) {
+ dev_err(&priv->spi->dev,
+ "Failed to switch back to config mode\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+int mcp25xxfd_can_probe(struct mcp25xxfd_priv *priv)
+{
+ struct spi_device *spi = priv->spi;
+ u32 mode_data;
+ int mode, ret;
+
+ /* For sanity check read TXQCON register. The TXEN bit should always
+ * be read as 1.
+ */
+ ret = mcp25xxfd_cmd_read(spi, MCP25XXFD_CAN_TXQCON, &mode_data);
+ if (ret)
+ return ret;
+
+ if ((mode_data & MCP25XXFD_CAN_TXQCON_TXEN) == 0) {
+ dev_err(&spi->dev, "TXQCON does not have TXEN bit set");
+ return -EINVAL;
+ }
+
+ /* Try to get the current mode */
+ mode = mcp25xxfd_can_get_mode(priv, &mode_data);
+ if (mode < 0)
+ return mode;
+
+ /* SPI-reset should have moved us into config mode. But then the
+ * documentation says that SPI-reset may only work reliably when already
+ * in config mode. So if we are in config mode then everything is fine
+ * and we check that a mode switch works properly.
+ */
+ if (mode == MCP25XXFD_CAN_CON_MODE_CONFIG)
+ return mcp25xxfd_can_probe_modeswitch(priv);
+
+ /* Any other mode is unexpected */
+ dev_err(&spi->dev,
+ "Found controller in unexpected mode: %d\n", mode);
+
+ /* Once again try to move to config mode. If this fails, we'll
+ * bail out.
+ */
+ ret = mcp25xxfd_can_switch_mode(priv, &mode_data,
+ MCP25XXFD_CAN_CON_MODE_CONFIG);
+ if (ret) {
+ dev_err(&priv->spi->dev,
+ "Unable to switch to config mode\n");
+ return -EINVAL;
+ }
+
+ /* Finally check if modeswitch is really working */
+ return mcp25xxfd_can_probe_modeswitch(priv);
+}
new file mode 100644
@@ -0,0 +1,16 @@
+/* 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_CAN_H
+#define __MCP25XXFD_CAN_H
+
+#include "mcp25xxfd_priv.h"
+
+/* probe the can controller */
+int mcp25xxfd_can_probe(struct mcp25xxfd_priv *priv);
+
+#endif /* __MCP25XXFD_CAN_H */
new file mode 100644
@@ -0,0 +1,226 @@
+// 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>
+ */
+
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+
+#include "mcp25xxfd_cmd.h"
+#include "mcp25xxfd_priv.h"
+
+static int mcp25xxfd_cmd_sync_write(struct spi_device *spi,
+ const void *tx_buf,
+ unsigned int tx_len)
+{
+ struct spi_transfer xfer;
+
+ memset(&xfer, 0, sizeof(xfer));
+ xfer.tx_buf = tx_buf;
+ xfer.len = tx_len;
+
+ return spi_sync_transfer(spi, &xfer, 1);
+}
+
+static int mcp25xxfd_cmd_write_then_read(struct spi_device *spi,
+ const void *tx_buf,
+ unsigned int tx_len,
+ void *rx_buf,
+ unsigned int rx_len)
+{
+ struct spi_transfer xfer[2];
+ u8 *spi_tx, *spi_rx;
+ int xfers;
+ int ret;
+
+ spi_tx = kzalloc(tx_len + rx_len, GFP_KERNEL);
+ if (!spi_tx)
+ return -ENOMEM;
+
+ spi_rx = spi_tx + tx_len;
+ memset(xfer, 0, sizeof(xfer));
+
+ /* Special handling for half-duplex */
+ if (spi->master->flags & SPI_MASTER_HALF_DUPLEX) {
+ xfers = 2;
+ xfer[0].tx_buf = spi_tx;
+ xfer[0].len = tx_len;
+ /* Offset for rx_buf needs to get aligned */
+ xfer[1].rx_buf = spi_rx + tx_len;
+ xfer[1].len = rx_len;
+ } else {
+ xfers = 1;
+ xfer[0].len = tx_len + rx_len;
+ xfer[0].tx_buf = spi_tx;
+ xfer[0].rx_buf = spi_rx;
+ }
+
+ memcpy(spi_tx, tx_buf, tx_len);
+ ret = spi_sync_transfer(spi, xfer, xfers);
+ if (ret)
+ goto out;
+
+ memcpy(rx_buf, xfer[0].rx_buf + tx_len, rx_len);
+
+out:
+ kfree(spi_tx);
+
+ return ret;
+}
+
+static int mcp25xxfd_cmd_write_then_write(struct spi_device *spi,
+ const void *tx_buf,
+ unsigned int tx_len,
+ const void *tx2_buf,
+ unsigned int tx2_len)
+{
+ struct spi_transfer xfer;
+ u8 *spi_tx;
+ int ret;
+
+ spi_tx = kzalloc(tx_len + tx2_len, GFP_KERNEL);
+ if (!spi_tx)
+ return -ENOMEM;
+
+ memset(&xfer, 0, sizeof(xfer));
+ xfer.len = tx_len + tx2_len;
+ xfer.tx_buf = spi_tx;
+
+ memcpy(spi_tx, tx_buf, tx_len);
+ memcpy(spi_tx + tx_len, tx2_buf, tx2_len);
+
+ ret = spi_sync_transfer(spi, &xfer, 1);
+ kfree(spi_tx);
+
+ return ret;
+}
+
+/* Read multiple bytes from registers */
+int mcp25xxfd_cmd_read_multi(struct spi_device *spi, u32 reg,
+ void *data, int n)
+{
+ u8 cmd[2];
+ int ret;
+
+ mcp25xxfd_cmd_calc(MCP25XXFD_INSTRUCTION_READ, reg, cmd);
+
+ ret = mcp25xxfd_cmd_write_then_read(spi, &cmd, 2, data, n);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+int mcp25xxfd_cmd_read_mask(struct spi_device *spi, u32 reg,
+ u32 *data, u32 mask)
+{
+ int first_byte, last_byte, len_byte;
+ int ret;
+
+ /* Make sure at least one bit is set */
+ if (!mask)
+ return -EINVAL;
+
+ /* Calculate first and last byte used */
+ first_byte = mcp25xxfd_cmd_first_byte(mask);
+ last_byte = mcp25xxfd_cmd_last_byte(mask);
+ len_byte = last_byte - first_byte + 1;
+
+ *data = 0;
+ ret = mcp25xxfd_cmd_read_multi(spi, reg + first_byte,
+ ((void *)data + first_byte), len_byte);
+ if (ret)
+ return ret;
+
+ mcp25xxfd_cmd_convert_to_cpu(data, 1);
+
+ return 0;
+}
+
+/* Write multiple bytes to registers */
+int mcp25xxfd_cmd_write_multi(struct spi_device *spi, u32 reg,
+ void *data, int n)
+{
+ int ret;
+ u8 cmd[2];
+
+ mcp25xxfd_cmd_calc(MCP25XXFD_INSTRUCTION_WRITE, reg, cmd);
+
+ ret = mcp25xxfd_cmd_write_then_write(spi, &cmd, 2, data, n);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+int mcp25xxfd_cmd_write_mask(struct spi_device *spi, u32 reg,
+ u32 data, u32 mask)
+{
+ int first_byte, last_byte, len_byte;
+ u8 cmd[2];
+
+ /* Make sure at least one bit is set */
+ if (!mask)
+ return -EINVAL;
+
+ /* calculate first and last byte used */
+ first_byte = mcp25xxfd_cmd_first_byte(mask);
+ last_byte = mcp25xxfd_cmd_last_byte(mask);
+ len_byte = last_byte - first_byte + 1;
+
+ mcp25xxfd_cmd_calc(MCP25XXFD_INSTRUCTION_WRITE,
+ reg + first_byte, cmd);
+
+ mcp25xxfd_cmd_convert_from_cpu(&data, 1);
+
+ return mcp25xxfd_cmd_write_then_write(spi,
+ cmd, sizeof(cmd),
+ ((void *)&data + first_byte),
+ len_byte);
+}
+
+int mcp25xxfd_cmd_write_regs(struct spi_device *spi, u32 reg,
+ u32 *data, u32 bytes)
+{
+ int ret;
+
+ mcp25xxfd_cmd_convert_from_cpu(data, bytes / sizeof(bytes));
+
+ ret = mcp25xxfd_cmd_write_multi(spi, reg, data, bytes);
+
+ mcp25xxfd_cmd_convert_to_cpu(data, bytes / sizeof(bytes));
+
+ return ret;
+}
+
+int mcp25xxfd_cmd_read_regs(struct spi_device *spi, u32 reg,
+ u32 *data, u32 bytes)
+{
+ int ret;
+
+ ret = mcp25xxfd_cmd_read_multi(spi, reg, data, bytes);
+
+ mcp25xxfd_cmd_convert_to_cpu((u32 *)data, bytes / sizeof(bytes));
+
+ return ret;
+}
+
+int mcp25xxfd_cmd_reset(struct spi_device *spi)
+{
+ u8 *cmd;
+ int ret;
+
+ cmd = kzalloc(2, GFP_KERNEL);
+ if (!cmd)
+ return -ENOMEM;
+
+ mcp25xxfd_cmd_calc(MCP25XXFD_INSTRUCTION_RESET, 0, cmd);
+
+ ret = mcp25xxfd_cmd_sync_write(spi, cmd, 2);
+
+ kfree(cmd);
+
+ return ret;
+}
new file mode 100644
@@ -0,0 +1,84 @@
+/* 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_CMD_H
+#define __MCP25XXFD_CMD_H
+
+#include <linux/byteorder/generic.h>
+#include <linux/spi/spi.h>
+
+/* SPI commands */
+#define MCP25XXFD_INSTRUCTION_RESET 0x0000
+#define MCP25XXFD_INSTRUCTION_READ 0x3000
+#define MCP25XXFD_INSTRUCTION_WRITE 0x2000
+#define MCP25XXFD_INSTRUCTION_READ_CRC 0xB000
+#define MCP25XXFD_INSTRUCTION_WRITE_CRC 0xA000
+#define MCP25XXFD_INSTRUCTION_WRITE_SAVE 0xC000
+
+#define MCP25XXFD_ADDRESS_MASK 0x0fff
+
+static inline void mcp25xxfd_cmd_convert_to_cpu(u32 *data, int n)
+{
+ le32_to_cpu_array(data, n);
+}
+
+static inline void mcp25xxfd_cmd_convert_from_cpu(u32 *data, int n)
+{
+ cpu_to_le32_array(data, n);
+}
+
+static inline void mcp25xxfd_cmd_calc(u16 cmd, u16 addr, u8 *data)
+{
+ cmd = cmd | (addr & MCP25XXFD_ADDRESS_MASK);
+
+ data[0] = (cmd >> 8) & 0xff;
+ data[1] = (cmd >> 0) & 0xff;
+}
+
+static inline int mcp25xxfd_cmd_first_byte(u32 mask)
+{
+ return (mask & 0x0000ffff) ?
+ ((mask & 0x000000ff) ? 0 : 1) :
+ ((mask & 0x00ff0000) ? 2 : 3);
+}
+
+static inline int mcp25xxfd_cmd_last_byte(u32 mask)
+{
+ return (mask & 0xffff0000) ?
+ ((mask & 0xff000000) ? 3 : 2) :
+ ((mask & 0x0000ff00) ? 1 : 0);
+}
+
+int mcp25xxfd_cmd_read_multi(struct spi_device *spi, u32 reg,
+ void *data, int n);
+int mcp25xxfd_cmd_read_mask(struct spi_device *spi, u32 reg,
+ u32 *data, u32 mask);
+static inline int mcp25xxfd_cmd_read(struct spi_device *spi, u32 reg,
+ u32 *data)
+{
+ return mcp25xxfd_cmd_read_mask(spi, reg, data, -1);
+}
+
+int mcp25xxfd_cmd_read_regs(struct spi_device *spi, u32 reg,
+ u32 *data, u32 bytes);
+
+int mcp25xxfd_cmd_write_multi(struct spi_device *spi, u32 reg,
+ void *data, int n);
+int mcp25xxfd_cmd_write_mask(struct spi_device *spi, u32 reg,
+ u32 data, u32 mask);
+static inline int mcp25xxfd_cmd_write(struct spi_device *spi, u32 reg,
+ u32 data)
+{
+ return mcp25xxfd_cmd_write_mask(spi, reg, data, -1);
+}
+
+int mcp25xxfd_cmd_write_regs(struct spi_device *spi, u32 reg,
+ u32 *data, u32 bytes);
+
+int mcp25xxfd_cmd_reset(struct spi_device *spi);
+
+#endif /* __MCP25XXFD_CMD_H */
new file mode 100644
@@ -0,0 +1,31 @@
+// 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>
+ */
+
+#include <linux/kernel.h>
+#include <linux/spi/spi.h>
+#include "mcp25xxfd_cmd.h"
+#include "mcp25xxfd_crc.h"
+#include "mcp25xxfd_regs.h"
+#include "mcp25xxfd_priv.h"
+
+int mcp25xxfd_crc_enable_int(struct mcp25xxfd_priv *priv, bool enable)
+{
+ u32 mask = MCP25XXFD_CRC_CRCERRIE | MCP25XXFD_CRC_FERRIE;
+
+ priv->regs.crc &= ~mask;
+ priv->regs.crc |= enable ? mask : 0;
+
+ return mcp25xxfd_cmd_write_mask(priv->spi, MCP25XXFD_CRC,
+ priv->regs.crc, mask);
+}
+
+int mcp25xxfd_crc_clear_int(struct mcp25xxfd_priv *priv)
+{
+ return mcp25xxfd_cmd_write_mask(priv->spi, MCP25XXFD_CRC, 0,
+ MCP25XXFD_CRC_CRCERRIF |
+ MCP25XXFD_CRC_FERRIF);
+}
new file mode 100644
@@ -0,0 +1,15 @@
+/* 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_CRC_H
+#define __MCP25XXFD_CRC_H
+
+#include "mcp25xxfd_priv.h"
+
+int mcp25xxfd_crc_enable_int(struct mcp25xxfd_priv *priv, bool enable);
+int mcp25xxfd_crc_clear_int(struct mcp25xxfd_priv *priv);
+
+#endif /* __MCP25XXFD_CRC_H */
new file mode 100644
@@ -0,0 +1,74 @@
+// 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>
+ */
+
+#include <linux/kernel.h>
+#include <linux/spi/spi.h>
+#include "mcp25xxfd_cmd.h"
+#include "mcp25xxfd_ecc.h"
+#include "mcp25xxfd_priv.h"
+#include "mcp25xxfd_regs.h"
+
+int mcp25xxfd_ecc_clear_int(struct mcp25xxfd_priv *priv)
+{
+ u32 val, addr;
+ int ret;
+
+ /* First report the error address */
+ ret = mcp25xxfd_cmd_read(priv->spi, MCP25XXFD_ECCSTAT, &val);
+ if (ret)
+ return ret;
+
+ /* If no flags are set then nothing to do */
+ if (!(val & (MCP25XXFD_ECCSTAT_SECIF | MCP25XXFD_ECCSTAT_DEDIF)))
+ return 0;
+
+ addr = (val & MCP25XXFD_ECCSTAT_ERRADDR_MASK) >>
+ MCP25XXFD_ECCSTAT_ERRADDR_SHIFT;
+
+ dev_err_ratelimited(&priv->spi->dev, "ECC %s bit error at %03x\n",
+ (val & MCP25XXFD_ECCSTAT_DEDIF) ?
+ "double" : "single",
+ addr);
+
+ /* Clear the error */
+ return mcp25xxfd_cmd_write_mask(priv->spi, MCP25XXFD_ECCSTAT, 0,
+ MCP25XXFD_ECCSTAT_SECIF |
+ MCP25XXFD_ECCSTAT_DEDIF);
+}
+
+int mcp25xxfd_ecc_enable_int(struct mcp25xxfd_priv *priv, bool enable)
+{
+ u32 mask = MCP25XXFD_ECCCON_SECIE | MCP25XXFD_ECCCON_DEDIE;
+
+ priv->regs.ecccon &= ~mask;
+ priv->regs.ecccon |= MCP25XXFD_ECCCON_ECCEN | (enable ? mask : 0);
+
+ return mcp25xxfd_cmd_write_mask(priv->spi, MCP25XXFD_ECCCON,
+ priv->regs.ecccon,
+ MCP25XXFD_ECCCON_ECCEN | mask);
+}
+
+int mcp25xxfd_ecc_enable(struct mcp25xxfd_priv *priv)
+{
+ u8 buffer[256];
+ int i, ret;
+
+ ret = mcp25xxfd_ecc_enable_int(priv, false);
+ if (ret)
+ return ret;
+
+ memset(buffer, 0, sizeof(buffer));
+ for (i = 0; i < MCP25XXFD_SRAM_SIZE; i += sizeof(buffer)) {
+ ret = mcp25xxfd_cmd_write_multi(priv->spi,
+ MCP25XXFD_SRAM_ADDR(i),
+ buffer, sizeof(buffer));
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,16 @@
+/* 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_ECC_H
+#define __MCP25XXFD_ECC_H
+
+#include "mcp25xxfd_priv.h"
+
+int mcp25xxfd_ecc_clear_int(struct mcp25xxfd_priv *priv);
+int mcp25xxfd_ecc_enable_int(struct mcp25xxfd_priv *priv, bool enable);
+int mcp25xxfd_ecc_enable(struct mcp25xxfd_priv *priv);
+
+#endif /* __MCP25XXFD_ECC_H */
new file mode 100644
@@ -0,0 +1,59 @@
+// 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>
+ */
+
+#include <linux/kernel.h>
+#include <linux/spi/spi.h>
+
+#include "mcp25xxfd_crc.h"
+#include "mcp25xxfd_ecc.h"
+#include "mcp25xxfd_int.h"
+#include "mcp25xxfd_priv.h"
+
+int mcp25xxfd_int_clear(struct mcp25xxfd_priv *priv)
+{
+ int ret;
+
+ ret = mcp25xxfd_ecc_clear_int(priv);
+ if (ret)
+ return ret;
+
+ return mcp25xxfd_crc_clear_int(priv);
+}
+
+int mcp25xxfd_int_enable(struct mcp25xxfd_priv *priv, bool enable)
+{
+ int ret;
+
+ /* If we enable interrupts, then clear interrupt first */
+ if (enable) {
+ ret = mcp25xxfd_int_clear(priv);
+ if (ret)
+ return ret;
+ }
+
+ ret = mcp25xxfd_crc_enable_int(priv, enable);
+ if (ret)
+ return ret;
+
+ ret = mcp25xxfd_ecc_enable(priv);
+ if (ret)
+ goto out_crc;
+
+ ret = mcp25xxfd_ecc_enable_int(priv, enable);
+ if (ret)
+ goto out_crc;
+
+ /* If we disable interrupts, then clear interrupt flags last */
+ if (!enable)
+ mcp25xxfd_int_clear(priv);
+
+ return 0;
+
+out_crc:
+ mcp25xxfd_crc_enable_int(priv, false);
+ return ret;
+}
new file mode 100644
@@ -0,0 +1,15 @@
+/* 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_INT_H
+#define __MCP25XXFD_INT_H
+
+#include "mcp25xxfd_priv.h"
+
+int mcp25xxfd_int_clear(struct mcp25xxfd_priv *priv);
+int mcp25xxfd_int_enable(struct mcp25xxfd_priv *priv, bool enable);
+
+#endif /* __MCP25XXFD_INT_H */
new file mode 100644
@@ -0,0 +1,48 @@
+/* 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/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include "mcp25xxfd_regs.h"
+
+#define DEVICE_NAME "mcp25xxfd"
+#define CLOCK_4_MHZ 4000000
+#define CLOCK_10_MHZ 10000000
+#define CLOCK_40_MHZ 40000000
+
+enum mcp25xxfd_model {
+ CAN_MCP2517FD = 0x2517,
+};
+
+struct mcp25xxfd_priv {
+ struct spi_device *spi;
+ struct clk *clk;
+
+ /* actual model of the mcp25xxfd */
+ enum mcp25xxfd_model model;
+
+ /* full device name used for interrupts */
+ char device_name[32];
+
+ int clock_freq;
+ struct regulator *power;
+
+ /* configuration registers */
+ struct {
+ u32 osc;
+ u32 iocon;
+ u32 crc;
+ u32 ecccon;
+ } regs;
+};
+
+#endif /* __MCP25XXFD_PRIV_H */
new file mode 100644
@@ -0,0 +1,656 @@
+/* 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_REGS_H
+#define __MCP25XXFD_REGS_H
+
+#include <linux/bitops.h>
+
+/* some constants derived from the datasheets */
+#define MCP25XXFD_OST_DELAY_MS 3
+#define MCP25XXFD_MIN_CLOCK_FREQUENCY 1000000
+#define MCP25XXFD_MAX_CLOCK_FREQUENCY 40000000
+#define MCP25XXFD_PLL_MULTIPLIER 10
+#define MCP25XXFD_AUTO_PLL_MAX_CLOCK_FREQUENCY \
+ (MCP25XXFD_MAX_CLOCK_FREQUENCY / MCP25XXFD_PLL_MULTIPLIER)
+#define MCP25XXFD_SCLK_DIVIDER 2
+
+/* GPIO, clock, ecc related register definitions of Controller itself */
+#define MCP25XXFD_SFR_BASE(x) (0xE00 + (x))
+#define MCP25XXFD_OSC MCP25XXFD_SFR_BASE(0x00)
+# define MCP25XXFD_OSC_PLLEN BIT(0)
+# define MCP25XXFD_OSC_OSCDIS BIT(2)
+# define MCP25XXFD_OSC_SCLKDIV BIT(4)
+# define MCP25XXFD_OSC_CLKODIV_BITS 2
+# define MCP25XXFD_OSC_CLKODIV_SHIFT 5
+# define MCP25XXFD_OSC_CLKODIV_MASK \
+ GENMASK(MCP25XXFD_OSC_CLKODIV_SHIFT \
+ + MCP25XXFD_OSC_CLKODIV_BITS - 1, \
+ MCP25XXFD_OSC_CLKODIV_SHIFT)
+# define MCP25XXFD_OSC_CLKODIV_10 3
+# define MCP25XXFD_OSC_CLKODIV_4 2
+# define MCP25XXFD_OSC_CLKODIV_2 1
+# define MCP25XXFD_OSC_CLKODIV_1 0
+# define MCP25XXFD_OSC_PLLRDY BIT(8)
+# define MCP25XXFD_OSC_OSCRDY BIT(10)
+# define MCP25XXFD_OSC_SCLKRDY BIT(12)
+#define MCP25XXFD_IOCON MCP25XXFD_SFR_BASE(0x04)
+# define MCP25XXFD_IOCON_TRIS0 BIT(0)
+# define MCP25XXFD_IOCON_TRIS1 BIT(1)
+# define MCP25XXFD_IOCON_XSTBYEN BIT(6)
+# define MCP25XXFD_IOCON_LAT0 BIT(8)
+# define MCP25XXFD_IOCON_LAT1 BIT(9)
+# define MCP25XXFD_IOCON_GPIO0 BIT(16)
+# define MCP25XXFD_IOCON_GPIO1 BIT(17)
+# define MCP25XXFD_IOCON_PM0 BIT(24)
+# define MCP25XXFD_IOCON_PM1 BIT(25)
+# define MCP25XXFD_IOCON_TXCANOD BIT(28)
+# define MCP25XXFD_IOCON_SOF BIT(29)
+# define MCP25XXFD_IOCON_INTOD BIT(30)
+#define MCP25XXFD_CRC MCP25XXFD_SFR_BASE(0x08)
+# define MCP25XXFD_CRC_MASK GENMASK(15, 0)
+# define MCP25XXFD_CRC_CRCERRIE BIT(16)
+# define MCP25XXFD_CRC_FERRIE BIT(17)
+# define MCP25XXFD_CRC_CRCERRIF BIT(24)
+# define MCP25XXFD_CRC_FERRIF BIT(25)
+#define MCP25XXFD_ECCCON MCP25XXFD_SFR_BASE(0x0C)
+# define MCP25XXFD_ECCCON_ECCEN BIT(0)
+# define MCP25XXFD_ECCCON_SECIE BIT(1)
+# define MCP25XXFD_ECCCON_DEDIE BIT(2)
+# define MCP25XXFD_ECCCON_PARITY_BITS 6
+# define MCP25XXFD_ECCCON_PARITY_SHIFT 8
+# define MCP25XXFD_ECCCON_PARITY_MASK \
+ GENMASK(MCP25XXFD_ECCCON_PARITY_SHIFT \
+ + MCP25XXFD_ECCCON_PARITY_BITS - 1, \
+ MCP25XXFD_ECCCON_PARITY_SHIFT)
+#define MCP25XXFD_ECCSTAT MCP25XXFD_SFR_BASE(0x10)
+# define MCP25XXFD_ECCSTAT_SECIF BIT(1)
+# define MCP25XXFD_ECCSTAT_DEDIF BIT(2)
+# define MCP25XXFD_ECCSTAT_ERRADDR_SHIFT 8
+# define MCP25XXFD_ECCSTAT_ERRADDR_MASK \
+ GENMASK(MCP25XXFD_ECCSTAT_ERRADDR_SHIFT + 11, \
+ MCP25XXFD_ECCSTAT_ERRADDR_SHIFT)
+
+/* CAN related register definitions of Controller CAN block */
+#define MCP25XXFD_CAN_SFR_BASE(x) (0x000 + (x))
+#define MCP25XXFD_CAN_CON \
+ MCP25XXFD_CAN_SFR_BASE(0x00)
+# define MCP25XXFD_CAN_CON_DNCNT_BITS 5
+# define MCP25XXFD_CAN_CON_DNCNT_SHIFT 0
+# define MCP25XXFD_CAN_CON_DNCNT_MASK \
+ GENMASK(MCP25XXFD_CAN_CON_DNCNT_SHIFT + \
+ MCP25XXFD_CAN_CON_DNCNT_BITS - 1, \
+ MCP25XXFD_CAN_CON_DNCNT_SHIFT)
+# define MCP25XXFD_CAN_CON_ISOCRCEN BIT(5)
+# define MCP25XXFD_CAN_CON_PXEDIS BIT(6)
+# define MCP25XXFD_CAN_CON_WAKFIL BIT(8)
+# define MCP25XXFD_CAN_CON_WFT_BITS 2
+# define MCP25XXFD_CAN_CON_WFT_SHIFT 9
+# define MCP25XXFD_CAN_CON_WFT_MASK \
+ GENMASK(MCP25XXFD_CAN_CON_WFT_SHIFT + \
+ MCP25XXFD_CAN_CON_WFT_BITS - 1, \
+ MCP25XXFD_CAN_CON_WFT_SHIFT)
+# define MCP25XXFD_CAN_CON_BUSY BIT(11)
+# define MCP25XXFD_CAN_CON_BRSDIS BIT(12)
+# define MCP25XXFD_CAN_CON_RTXAT BIT(16)
+# define MCP25XXFD_CAN_CON_ESIGM BIT(17)
+# define MCP25XXFD_CAN_CON_SERR2LOM BIT(18)
+# define MCP25XXFD_CAN_CON_STEF BIT(19)
+# define MCP25XXFD_CAN_CON_TXQEN BIT(20)
+# define MCP25XXFD_CAN_CON_OPMODE_BITS 3
+# define MCP25XXFD_CAN_CON_OPMOD_SHIFT 21
+# define MCP25XXFD_CAN_CON_OPMOD_MASK \
+ GENMASK(MCP25XXFD_CAN_CON_OPMOD_SHIFT + \
+ MCP25XXFD_CAN_CON_OPMODE_BITS - 1, \
+ MCP25XXFD_CAN_CON_OPMOD_SHIFT)
+# define MCP25XXFD_CAN_CON_REQOP_BITS 3
+# define MCP25XXFD_CAN_CON_REQOP_SHIFT 24
+# define MCP25XXFD_CAN_CON_REQOP_MASK \
+ GENMASK(MCP25XXFD_CAN_CON_REQOP_SHIFT + \
+ MCP25XXFD_CAN_CON_REQOP_BITS - 1, \
+ MCP25XXFD_CAN_CON_REQOP_SHIFT)
+# define MCP25XXFD_CAN_CON_MODE_MIXED 0
+# define MCP25XXFD_CAN_CON_MODE_SLEEP 1
+# define MCP25XXFD_CAN_CON_MODE_INT_LOOPBACK 2
+# define MCP25XXFD_CAN_CON_MODE_LISTENONLY 3
+# define MCP25XXFD_CAN_CON_MODE_CONFIG 4
+# define MCP25XXFD_CAN_CON_MODE_EXT_LOOPBACK 5
+# define MCP25XXFD_CAN_CON_MODE_CAN2_0 6
+# define MCP25XXFD_CAN_CON_MODE_RESTRICTED 7
+# define MCP25XXFD_CAN_CON_ABAT BIT(27)
+# define MCP25XXFD_CAN_CON_TXBWS_BITS 3
+# define MCP25XXFD_CAN_CON_TXBWS_SHIFT 28
+# define MCP25XXFD_CAN_CON_TXBWS_MASK \
+ GENMASK(MCP25XXFD_CAN_CON_TXBWS_SHIFT + \
+ MCP25XXFD_CAN_CON_TXBWS_BITS - 1, \
+ MCP25XXFD_CAN_CON_TXBWS_SHIFT)
+# define MCP25XXFD_CAN_CON_DEFAULT \
+ (MCP25XXFD_CAN_CON_ISOCRCEN | \
+ MCP25XXFD_CAN_CON_PXEDIS | \
+ MCP25XXFD_CAN_CON_WAKFIL | \
+ (3 << MCP25XXFD_CAN_CON_WFT_SHIFT) | \
+ MCP25XXFD_CAN_CON_STEF | \
+ MCP25XXFD_CAN_CON_TXQEN | \
+ (MCP25XXFD_CAN_CON_MODE_CONFIG << MCP25XXFD_CAN_CON_OPMOD_SHIFT) | \
+ (MCP25XXFD_CAN_CON_MODE_CONFIG << MCP25XXFD_CAN_CON_REQOP_SHIFT))
+# define MCP25XXFD_CAN_CON_DEFAULT_MASK \
+ (MCP25XXFD_CAN_CON_DNCNT_MASK | \
+ MCP25XXFD_CAN_CON_ISOCRCEN | \
+ MCP25XXFD_CAN_CON_PXEDIS | \
+ MCP25XXFD_CAN_CON_WAKFIL | \
+ MCP25XXFD_CAN_CON_WFT_MASK | \
+ MCP25XXFD_CAN_CON_BRSDIS | \
+ MCP25XXFD_CAN_CON_RTXAT | \
+ MCP25XXFD_CAN_CON_ESIGM | \
+ MCP25XXFD_CAN_CON_SERR2LOM | \
+ MCP25XXFD_CAN_CON_STEF | \
+ MCP25XXFD_CAN_CON_TXQEN | \
+ MCP25XXFD_CAN_CON_OPMOD_MASK | \
+ MCP25XXFD_CAN_CON_REQOP_MASK | \
+ MCP25XXFD_CAN_CON_ABAT | \
+ MCP25XXFD_CAN_CON_TXBWS_MASK)
+#define MCP25XXFD_CAN_NBTCFG MCP25XXFD_CAN_SFR_BASE(0x04)
+# define MCP25XXFD_CAN_NBTCFG_SJW_BITS 7
+# define MCP25XXFD_CAN_NBTCFG_SJW_SHIFT 0
+# define MCP25XXFD_CAN_NBTCFG_SJW_MASK \
+ GENMASK(MCP25XXFD_CAN_NBTCFG_SJW_SHIFT + \
+ MCP25XXFD_CAN_NBTCFG_SJW_BITS - 1, \
+ MCP25XXFD_CAN_NBTCFG_SJW_SHIFT)
+# define MCP25XXFD_CAN_NBTCFG_TSEG2_BITS 7
+# define MCP25XXFD_CAN_NBTCFG_TSEG2_SHIFT 8
+# define MCP25XXFD_CAN_NBTCFG_TSEG2_MASK \
+ GENMASK(MCP25XXFD_CAN_NBTCFG_TSEG2_SHIFT + \
+ MCP25XXFD_CAN_NBTCFG_TSEG2_BITS - 1, \
+ MCP25XXFD_CAN_NBTCFG_TSEG2_SHIFT)
+# define MCP25XXFD_CAN_NBTCFG_TSEG1_BITS 8
+# define MCP25XXFD_CAN_NBTCFG_TSEG1_SHIFT 16
+# define MCP25XXFD_CAN_NBTCFG_TSEG1_MASK \
+ GENMASK(MCP25XXFD_CAN_NBTCFG_TSEG1_SHIFT + \
+ MCP25XXFD_CAN_NBTCFG_TSEG1_BITS - 1, \
+ MCP25XXFD_CAN_NBTCFG_TSEG1_SHIFT)
+# define MCP25XXFD_CAN_NBTCFG_BRP_BITS 8
+# define MCP25XXFD_CAN_NBTCFG_BRP_SHIFT 24
+# define MCP25XXFD_CAN_NBTCFG_BRP_MASK \
+ GENMASK(MCP25XXFD_CAN_NBTCFG_BRP_SHIFT + \
+ MCP25XXFD_CAN_NBTCFG_BRP_BITS - 1, \
+ MCP25XXFD_CAN_NBTCFG_BRP_SHIFT)
+#define MCP25XXFD_CAN_DBTCFG MCP25XXFD_CAN_SFR_BASE(0x08)
+# define MCP25XXFD_CAN_DBTCFG_SJW_BITS 4
+# define MCP25XXFD_CAN_DBTCFG_SJW_SHIFT 0
+# define MCP25XXFD_CAN_DBTCFG_SJW_MASK \
+ GENMASK(MCP25XXFD_CAN_DBTCFG_SJW_SHIFT + \
+ MCP25XXFD_CAN_DBTCFG_SJW_BITS - 1, \
+ MCP25XXFD_CAN_DBTCFG_SJW_SHIFT)
+# define MCP25XXFD_CAN_DBTCFG_TSEG2_BITS 4
+# define MCP25XXFD_CAN_DBTCFG_TSEG2_SHIFT 8
+# define MCP25XXFD_CAN_DBTCFG_TSEG2_MASK \
+ GENMASK(MCP25XXFD_CAN_DBTCFG_TSEG2_SHIFT + \
+ MCP25XXFD_CAN_DBTCFG_TSEG2_BITS - 1, \
+ MCP25XXFD_CAN_DBTCFG_TSEG2_SHIFT)
+# define MCP25XXFD_CAN_DBTCFG_TSEG1_BITS 5
+# define MCP25XXFD_CAN_DBTCFG_TSEG1_SHIFT 16
+# define MCP25XXFD_CAN_DBTCFG_TSEG1_MASK \
+ GENMASK(MCP25XXFD_CAN_DBTCFG_TSEG1_SHIFT + \
+ MCP25XXFD_CAN_DBTCFG_TSEG1_BITS - 1, \
+ MCP25XXFD_CAN_DBTCFG_TSEG1_SHIFT)
+# define MCP25XXFD_CAN_DBTCFG_BRP_BITS 8
+# define MCP25XXFD_CAN_DBTCFG_BRP_SHIFT 24
+# define MCP25XXFD_CAN_DBTCFG_BRP_MASK \
+ GENMASK(MCP25XXFD_CAN_DBTCFG_BRP_SHIFT + \
+ MCP25XXFD_CAN_DBTCFG_BRP_BITS - 1, \
+ MCP25XXFD_CAN_DBTCFG_BRP_SHIFT)
+#define MCP25XXFD_CAN_TDC MCP25XXFD_CAN_SFR_BASE(0x0C)
+# define MCP25XXFD_CAN_TDC_TDCV_BITS 5
+# define MCP25XXFD_CAN_TDC_TDCV_SHIFT 0
+# define MCP25XXFD_CAN_TDC_TDCV_MASK \
+ GENMASK(MCP25XXFD_CAN_TDC_TDCV_SHIFT + \
+ MCP25XXFD_CAN_TDC_TDCV_BITS - 1, \
+ MCP25XXFD_CAN_TDC_TDCV_SHIFT)
+# define MCP25XXFD_CAN_TDC_TDCO_BITS 5
+# define MCP25XXFD_CAN_TDC_TDCO_SHIFT 8
+# define MCP25XXFD_CAN_TDC_TDCO_MASK \
+ GENMASK(MCP25XXFD_CAN_TDC_TDCO_SHIFT + \
+ MCP25XXFD_CAN_TDC_TDCO_BITS - 1, \
+ MCP25XXFD_CAN_TDC_TDCO_SHIFT)
+# define MCP25XXFD_CAN_TDC_TDCMOD_BITS 2
+# define MCP25XXFD_CAN_TDC_TDCMOD_SHIFT 16
+# define MCP25XXFD_CAN_TDC_TDCMOD_MASK \
+ GENMASK(MCP25XXFD_CAN_TDC_TDCMOD_SHIFT + \
+ MCP25XXFD_CAN_TDC_TDCMOD_BITS - 1, \
+ MCP25XXFD_CAN_TDC_TDCMOD_SHIFT)
+# define MCP25XXFD_CAN_TDC_TDCMOD_DISABLED 0
+# define MCP25XXFD_CAN_TDC_TDCMOD_MANUAL 1
+# define MCP25XXFD_CAN_TDC_TDCMOD_AUTO 2
+# define MCP25XXFD_CAN_TDC_SID11EN BIT(24)
+# define MCP25XXFD_CAN_TDC_EDGFLTEN BIT(25)
+#define MCP25XXFD_CAN_TBC MCP25XXFD_CAN_SFR_BASE(0x10)
+#define MCP25XXFD_CAN_TSCON MCP25XXFD_CAN_SFR_BASE(0x14)
+# define MCP25XXFD_CAN_TSCON_TBCPRE_BITS 10
+# define MCP25XXFD_CAN_TSCON_TBCPRE_SHIFT 0
+# define MCP25XXFD_CAN_TSCON_TBCPRE_MASK \
+ GENMASK(MCP25XXFD_CAN_TSCON_TBCPRE_SHIFT + \
+ MCP25XXFD_CAN_TSCON_TBCPRE_BITS - 1, \
+ MCP25XXFD_CAN_TSCON_TBCPRE_SHIFT)
+# define MCP25XXFD_CAN_TSCON_TBCEN BIT(16)
+# define MCP25XXFD_CAN_TSCON_TSEOF BIT(17)
+# define MCP25XXFD_CAN_TSCON_TSRES BIT(18)
+#define MCP25XXFD_CAN_VEC MCP25XXFD_CAN_SFR_BASE(0x18)
+# define MCP25XXFD_CAN_VEC_ICODE_BITS 7
+# define MCP25XXFD_CAN_VEC_ICODE_SHIFT 0
+# define MCP25XXFD_CAN_VEC_ICODE_MASK \
+ GENMASK(MCP25XXFD_CAN_VEC_ICODE_SHIFT + \
+ MCP25XXFD_CAN_VEC_ICODE_BITS - 1, \
+ MCP25XXFD_CAN_VEC_ICODE_SHIFT)
+# define MCP25XXFD_CAN_VEC_FILHIT_BITS 5
+# define MCP25XXFD_CAN_VEC_FILHIT_SHIFT 8
+# define MCP25XXFD_CAN_VEC_FILHIT_MASK \
+ GENMASK(MCP25XXFD_CAN_VEC_FILHIT_SHIFT + \
+ MCP25XXFD_CAN_VEC_FILHIT_BITS - 1, \
+ MCP25XXFD_CAN_VEC_FILHIT_SHIFT)
+# define MCP25XXFD_CAN_VEC_TXCODE_BITS 7
+# define MCP25XXFD_CAN_VEC_TXCODE_SHIFT 16
+# define MCP25XXFD_CAN_VEC_TXCODE_MASK \
+ GENMASK(MCP25XXFD_CAN_VEC_TXCODE_SHIFT + \
+ MCP25XXFD_CAN_VEC_TXCODE_BITS - 1, \
+ MCP25XXFD_CAN_VEC_TXCODE_SHIFT)
+# define MCP25XXFD_CAN_VEC_RXCODE_BITS 7
+# define MCP25XXFD_CAN_VEC_RXCODE_SHIFT 24
+# define MCP25XXFD_CAN_VEC_RXCODE_MASK \
+ GENMASK(MCP25XXFD_CAN_VEC_RXCODE_SHIFT + \
+ MCP25XXFD_CAN_VEC_RXCODE_BITS - 1, \
+ MCP25XXFD_CAN_VEC_RXCODE_SHIFT)
+#define MCP25XXFD_CAN_INT MCP25XXFD_CAN_SFR_BASE(0x1C)
+# define MCP25XXFD_CAN_INT_IF_SHIFT 0
+# define MCP25XXFD_CAN_INT_TXIF BIT(0)
+# define MCP25XXFD_CAN_INT_RXIF BIT(1)
+# define MCP25XXFD_CAN_INT_TBCIF BIT(2)
+# define MCP25XXFD_CAN_INT_MODIF BIT(3)
+# define MCP25XXFD_CAN_INT_TEFIF BIT(4)
+# define MCP25XXFD_CAN_INT_ECCIF BIT(8)
+# define MCP25XXFD_CAN_INT_SPICRCIF BIT(9)
+# define MCP25XXFD_CAN_INT_TXATIF BIT(10)
+# define MCP25XXFD_CAN_INT_RXOVIF BIT(11)
+# define MCP25XXFD_CAN_INT_SERRIF BIT(12)
+# define MCP25XXFD_CAN_INT_CERRIF BIT(13)
+# define MCP25XXFD_CAN_INT_WAKIF BIT(14)
+# define MCP25XXFD_CAN_INT_IVMIF BIT(15)
+# define MCP25XXFD_CAN_INT_IF_MASK \
+ (MCP25XXFD_CAN_INT_TXIF | \
+ MCP25XXFD_CAN_INT_RXIF | \
+ MCP25XXFD_CAN_INT_TBCIF | \
+ MCP25XXFD_CAN_INT_MODIF | \
+ MCP25XXFD_CAN_INT_TEFIF | \
+ MCP25XXFD_CAN_INT_ECCIF | \
+ MCP25XXFD_CAN_INT_SPICRCIF | \
+ MCP25XXFD_CAN_INT_TXATIF | \
+ MCP25XXFD_CAN_INT_RXOVIF | \
+ MCP25XXFD_CAN_INT_CERRIF | \
+ MCP25XXFD_CAN_INT_SERRIF | \
+ MCP25XXFD_CAN_INT_WAKIF | \
+ MCP25XXFD_CAN_INT_IVMIF)
+# define MCP25XXFD_CAN_INT_IF_CLEAR_MASK \
+ (MCP25XXFD_CAN_INT_TBCIF | \
+ MCP25XXFD_CAN_INT_MODIF | \
+ MCP25XXFD_CAN_INT_CERRIF | \
+ MCP25XXFD_CAN_INT_SERRIF | \
+ MCP25XXFD_CAN_INT_WAKIF | \
+ MCP25XXFD_CAN_INT_IVMIF)
+# define MCP25XXFD_CAN_INT_IE_SHIFT 16
+# define MCP25XXFD_CAN_INT_TXIE \
+ (MCP25XXFD_CAN_INT_TXIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_RXIE \
+ (MCP25XXFD_CAN_INT_RXIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_TBCIE \
+ (MCP25XXFD_CAN_INT_TBCIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_MODIE \
+ (MCP25XXFD_CAN_INT_MODIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_TEFIE \
+ (MCP25XXFD_CAN_INT_TEFIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_ECCIE \
+ (MCP25XXFD_CAN_INT_ECCIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_SPICRCIE \
+ (MCP25XXFD_CAN_INT_SPICRCIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_TXATIE \
+ (MCP25XXFD_CAN_INT_TXATIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_RXOVIE \
+ (MCP25XXFD_CAN_INT_RXOVIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_CERRIE \
+ (MCP25XXFD_CAN_INT_CERRIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_SERRIE \
+ (MCP25XXFD_CAN_INT_SERRIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_WAKIE \
+ (MCP25XXFD_CAN_INT_WAKIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_IVMIE \
+ (MCP25XXFD_CAN_INT_IVMIF << MCP25XXFD_CAN_INT_IE_SHIFT)
+# define MCP25XXFD_CAN_INT_IE_MASK \
+ (MCP25XXFD_CAN_INT_TXIE | \
+ MCP25XXFD_CAN_INT_RXIE | \
+ MCP25XXFD_CAN_INT_TBCIE | \
+ MCP25XXFD_CAN_INT_MODIE | \
+ MCP25XXFD_CAN_INT_TEFIE | \
+ MCP25XXFD_CAN_INT_ECCIE | \
+ MCP25XXFD_CAN_INT_SPICRCIE | \
+ MCP25XXFD_CAN_INT_TXATIE | \
+ MCP25XXFD_CAN_INT_RXOVIE | \
+ MCP25XXFD_CAN_INT_CERRIE | \
+ MCP25XXFD_CAN_INT_SERRIE | \
+ MCP25XXFD_CAN_INT_WAKIE | \
+ MCP25XXFD_CAN_INT_IVMIE)
+#define MCP25XXFD_CAN_RXIF MCP25XXFD_CAN_SFR_BASE(0x20)
+#define MCP25XXFD_CAN_TXIF MCP25XXFD_CAN_SFR_BASE(0x24)
+#define MCP25XXFD_CAN_RXOVIF MCP25XXFD_CAN_SFR_BASE(0x28)
+#define MCP25XXFD_CAN_TXATIF MCP25XXFD_CAN_SFR_BASE(0x2C)
+#define MCP25XXFD_CAN_TXREQ MCP25XXFD_CAN_SFR_BASE(0x30)
+#define MCP25XXFD_CAN_TREC MCP25XXFD_CAN_SFR_BASE(0x34)
+# define MCP25XXFD_CAN_TREC_REC_BITS 8
+# define MCP25XXFD_CAN_TREC_REC_SHIFT 0
+# define MCP25XXFD_CAN_TREC_REC_MASK \
+ GENMASK(MCP25XXFD_CAN_TREC_REC_SHIFT + \
+ MCP25XXFD_CAN_TREC_REC_BITS - 1, \
+ MCP25XXFD_CAN_TREC_REC_SHIFT)
+# define MCP25XXFD_CAN_TREC_TEC_BITS 8
+# define MCP25XXFD_CAN_TREC_TEC_SHIFT 8
+# define MCP25XXFD_CAN_TREC_TEC_MASK \
+ GENMASK(MCP25XXFD_CAN_TREC_TEC_SHIFT + \
+ MCP25XXFD_CAN_TREC_TEC_BITS - 1, \
+ MCP25XXFD_CAN_TREC_TEC_SHIFT)
+# define MCP25XXFD_CAN_TREC_EWARN BIT(16)
+# define MCP25XXFD_CAN_TREC_RXWARN BIT(17)
+# define MCP25XXFD_CAN_TREC_TXWARN BIT(18)
+# define MCP25XXFD_CAN_TREC_RXBP BIT(19)
+# define MCP25XXFD_CAN_TREC_TXBP BIT(20)
+# define MCP25XXFD_CAN_TREC_TXBO BIT(21)
+#define MCP25XXFD_CAN_BDIAG0 MCP25XXFD_CAN_SFR_BASE(0x38)
+# define MCP25XXFD_CAN_BDIAG0_NRERRCNT_BITS 8
+# define MCP25XXFD_CAN_BDIAG0_NRERRCNT_SHIFT 0
+# define MCP25XXFD_CAN_BDIAG0_NRERRCNT_MASK \
+ GENMASK(MCP25XXFD_CAN_BDIAG0_NRERRCNT_SHIFT + \
+ MCP25XXFD_CAN_BDIAG0_NRERRCNT_BITS - 1, \
+ MCP25XXFD_CAN_BDIAG0_NRERRCNT_SHIFT)
+# define MCP25XXFD_CAN_BDIAG0_NTERRCNT_BITS 8
+# define MCP25XXFD_CAN_BDIAG0_NTERRCNT_SHIFT 8
+# define MCP25XXFD_CAN_BDIAG0_NTERRCNT_MASK \
+ GENMASK(MCP25XXFD_CAN_BDIAG0_NTERRCNT_SHIFT + \
+ MCP25XXFD_CAN_BDIAG0_NTERRCNT_BITS - 1, \
+ MCP25XXFD_CAN_BDIAG0_NTERRCNT_SHIFT)
+# define MCP25XXFD_CAN_BDIAG0_DRERRCNT_BITS 8
+# define MCP25XXFD_CAN_BDIAG0_DRERRCNT_SHIFT 16
+# define MCP25XXFD_CAN_BDIAG0_DRERRCNT_MASK \
+ GENMASK(MCP25XXFD_CAN_BDIAG0_DRERRCNT_SHIFT + \
+ MCP25XXFD_CAN_BDIAG0_DRERRCNT_BITS - 1, \
+ MCP25XXFD_CAN_BDIAG0_DRERRCNT_SHIFT)
+# define MCP25XXFD_CAN_BDIAG0_DTERRCNT_BITS 8
+# define MCP25XXFD_CAN_BDIAG0_DTERRCNT_SHIFT 24
+# define MCP25XXFD_CAN_BDIAG0_DTERRCNT_MASK \
+ GENMASK(MCP25XXFD_CAN_BDIAG0_DTERRCNT_SHIFT + \
+ MCP25XXFD_CAN_BDIAG0_DTERRCNT_BITS - 1, \
+ MCP25XXFD_CAN_BDIAG0_DTERRCNT_SHIFT)
+#define MCP25XXFD_CAN_BDIAG1 MCP25XXFD_CAN_SFR_BASE(0x3C)
+# define MCP25XXFD_CAN_BDIAG1_EFMSGCNT_BITS 16
+# define MCP25XXFD_CAN_BDIAG1_EFMSGCNT_SHIFT 0
+# define MCP25XXFD_CAN_BDIAG1_EFMSGCNT_MASK \
+ GENMASK(MCP25XXFD_CAN_BDIAG1_EFMSGCNT_SHIFT + \
+ MCP25XXFD_CAN_BDIAG1_EFMSGCNT_BITS - 1, \
+ MCP25XXFD_CAN_BDIAG1_EFMSGCNT_SHIFT)
+# define MCP25XXFD_CAN_BDIAG1_NBIT0ERR BIT(16)
+# define MCP25XXFD_CAN_BDIAG1_NBIT1ERR BIT(17)
+# define MCP25XXFD_CAN_BDIAG1_NACKERR BIT(18)
+# define MCP25XXFD_CAN_BDIAG1_NSTUFERR BIT(19)
+# define MCP25XXFD_CAN_BDIAG1_NFORMERR BIT(20)
+# define MCP25XXFD_CAN_BDIAG1_NCRCERR BIT(21)
+# define MCP25XXFD_CAN_BDIAG1_TXBOERR BIT(23)
+# define MCP25XXFD_CAN_BDIAG1_DBIT0ERR BIT(24)
+# define MCP25XXFD_CAN_BDIAG1_DBIT1ERR BIT(25)
+# define MCP25XXFD_CAN_BDIAG1_DFORMERR BIT(27)
+# define MCP25XXFD_CAN_BDIAG1_DSTUFERR BIT(28)
+# define MCP25XXFD_CAN_BDIAG1_DCRCERR BIT(29)
+# define MCP25XXFD_CAN_BDIAG1_ESI BIT(30)
+# define MCP25XXFD_CAN_BDIAG1_DLCMM BIT(31)
+#define MCP25XXFD_CAN_TEFCON MCP25XXFD_CAN_SFR_BASE(0x40)
+# define MCP25XXFD_CAN_TEFCON_TEFNEIE BIT(0)
+# define MCP25XXFD_CAN_TEFCON_TEFHIE BIT(1)
+# define MCP25XXFD_CAN_TEFCON_TEFFIE BIT(2)
+# define MCP25XXFD_CAN_TEFCON_TEFOVIE BIT(3)
+# define MCP25XXFD_CAN_TEFCON_TEFTSEN BIT(5)
+# define MCP25XXFD_CAN_TEFCON_UINC BIT(8)
+# define MCP25XXFD_CAN_TEFCON_FRESET BIT(10)
+# define MCP25XXFD_CAN_TEFCON_FSIZE_BITS 5
+# define MCP25XXFD_CAN_TEFCON_FSIZE_SHIFT 24
+# define MCP25XXFD_CAN_TEFCON_FSIZE_MASK \
+ GENMASK(MCP25XXFD_CAN_TEFCON_FSIZE_SHIFT + \
+ MCP25XXFD_CAN_TEFCON_FSIZE_BITS - 1, \
+ MCP25XXFD_CAN_TEFCON_FSIZE_SHIFT)
+#define MCP25XXFD_CAN_TEFSTA MCP25XXFD_CAN_SFR_BASE(0x44)
+# define MCP25XXFD_CAN_TEFSTA_TEFNEIF BIT(0)
+# define MCP25XXFD_CAN_TEFSTA_TEFHIF BIT(1)
+# define MCP25XXFD_CAN_TEFSTA_TEFFIF BIT(2)
+# define MCP25XXFD_CAN_TEFSTA_TEVOVIF BIT(3)
+#define MCP25XXFD_CAN_TEFUA MCP25XXFD_CAN_SFR_BASE(0x48)
+#define MCP25XXFD_CAN_RESERVED MCP25XXFD_CAN_SFR_BASE(0x4C)
+#define MCP25XXFD_CAN_TXQCON MCP25XXFD_CAN_SFR_BASE(0x50)
+# define MCP25XXFD_CAN_TXQCON_TXQNIE BIT(0)
+# define MCP25XXFD_CAN_TXQCON_TXQEIE BIT(2)
+# define MCP25XXFD_CAN_TXQCON_TXATIE BIT(4)
+# define MCP25XXFD_CAN_TXQCON_TXEN BIT(7)
+# define MCP25XXFD_CAN_TXQCON_UINC BIT(8)
+# define MCP25XXFD_CAN_TXQCON_TXREQ BIT(9)
+# define MCP25XXFD_CAN_TXQCON_FRESET BIT(10)
+# define MCP25XXFD_CAN_TXQCON_TXPRI_BITS 5
+# define MCP25XXFD_CAN_TXQCON_TXPRI_SHIFT 16
+# define MCP25XXFD_CAN_TXQCON_TXPRI_MASK \
+ GENMASK(MCP25XXFD_CAN_TXQCON_TXPRI_SHIFT + \
+ MCP25XXFD_CAN_TXQCON_TXPRI_BITS - 1, \
+ MCP25XXFD_CAN_TXQCON_TXPRI_SHIFT)
+# define MCP25XXFD_CAN_TXQCON_TXAT_BITS 2
+# define MCP25XXFD_CAN_TXQCON_TXAT_SHIFT 21
+# define MCP25XXFD_CAN_TXQCON_TXAT_MASK \
+ GENMASK(MCP25XXFD_CAN_TXQCON_TXAT_SHIFT + \
+ #MCP25XXFD_CAN_TXQCON_TXAT_BITS - 1, \
+ MCP25XXFD_CAN_TXQCON_TXAT_SHIFT)
+# define MCP25XXFD_CAN_TXQCON_FSIZE_BITS 5
+# define MCP25XXFD_CAN_TXQCON_FSIZE_SHIFT 24
+# define MCP25XXFD_CAN_TXQCON_FSIZE_MASK \
+ GENMASK(MCP25XXFD_CAN_TXQCON_FSIZE_SHIFT + \
+ MCP25XXFD_CAN_TXQCON_FSIZE_BITS - 1, \
+ MCP25XXFD_CAN_TXQCON_FSIZE_SHIFT)
+# define MCP25XXFD_CAN_TXQCON_PLSIZE_BITS 3
+# define MCP25XXFD_CAN_TXQCON_PLSIZE_SHIFT 29
+# define MCP25XXFD_CAN_TXQCON_PLSIZE_MASK \
+ GENMASK(MCP25XXFD_CAN_TXQCON_PLSIZE_SHIFT + \
+ MCP25XXFD_CAN_TXQCON_PLSIZE_BITS - 1, \
+ MCP25XXFD_CAN_TXQCON_PLSIZE_SHIFT)
+# define MCP25XXFD_CAN_TXQCON_PLSIZE_8 0
+# define MCP25XXFD_CAN_TXQCON_PLSIZE_12 1
+# define MCP25XXFD_CAN_TXQCON_PLSIZE_16 2
+# define MCP25XXFD_CAN_TXQCON_PLSIZE_20 3
+# define MCP25XXFD_CAN_TXQCON_PLSIZE_24 4
+# define MCP25XXFD_CAN_TXQCON_PLSIZE_32 5
+# define MCP25XXFD_CAN_TXQCON_PLSIZE_48 6
+# define MCP25XXFD_CAN_TXQCON_PLSIZE_64 7
+
+#define MCP25XXFD_CAN_TXQSTA MCP25XXFD_CAN_SFR_BASE(0x54)
+# define MCP25XXFD_CAN_TXQSTA_TXQNIF BIT(0)
+# define MCP25XXFD_CAN_TXQSTA_TXQEIF BIT(2)
+# define MCP25XXFD_CAN_TXQSTA_TXATIF BIT(4)
+# define MCP25XXFD_CAN_TXQSTA_TXERR BIT(5)
+# define MCP25XXFD_CAN_TXQSTA_TXLARB BIT(6)
+# define MCP25XXFD_CAN_TXQSTA_TXABT BIT(7)
+# define MCP25XXFD_CAN_TXQSTA_TXQCI_BITS 5
+# define MCP25XXFD_CAN_TXQSTA_TXQCI_SHIFT 8
+# define MCP25XXFD_CAN_TXQSTA_TXQCI_MASK \
+ GENMASK(MCP25XXFD_CAN_TXQSTA_TXQCI_SHIFT + \
+ MCP25XXFD_CAN_TXQSTA_TXQCI_BITS - 1, \
+ MCP25XXFD_CAN_TXQSTA_TXQCI_SHIFT)
+
+#define MCP25XXFD_CAN_TXQUA MCP25XXFD_CAN_SFR_BASE(0x58)
+#define MCP25XXFD_CAN_FIFOCON(x) \
+ MCP25XXFD_CAN_SFR_BASE(0x5C + 12 * ((x) - 1))
+#define MCP25XXFD_CAN_FIFOCON_TFNRFNIE BIT(0)
+#define MCP25XXFD_CAN_FIFOCON_TFHRFHIE BIT(1)
+#define MCP25XXFD_CAN_FIFOCON_TFERFFIE BIT(2)
+#define MCP25XXFD_CAN_FIFOCON_RXOVIE BIT(3)
+#define MCP25XXFD_CAN_FIFOCON_TXATIE BIT(4)
+#define MCP25XXFD_CAN_FIFOCON_RXTSEN BIT(5)
+#define MCP25XXFD_CAN_FIFOCON_RTREN BIT(6)
+#define MCP25XXFD_CAN_FIFOCON_TXEN BIT(7)
+#define MCP25XXFD_CAN_FIFOCON_UINC BIT(8)
+#define MCP25XXFD_CAN_FIFOCON_TXREQ BIT(9)
+#define MCP25XXFD_CAN_FIFOCON_FRESET BIT(10)
+# define MCP25XXFD_CAN_FIFOCON_TXPRI_BITS 5
+# define MCP25XXFD_CAN_FIFOCON_TXPRI_SHIFT 16
+# define MCP25XXFD_CAN_FIFOCON_TXPRI_MASK \
+ GENMASK(MCP25XXFD_CAN_FIFOCON_TXPRI_SHIFT + \
+ MCP25XXFD_CAN_FIFOCON_TXPRI_BITS - 1, \
+ MCP25XXFD_CAN_FIFOCON_TXPRI_SHIFT)
+# define MCP25XXFD_CAN_FIFOCON_TXAT_BITS 2
+# define MCP25XXFD_CAN_FIFOCON_TXAT_SHIFT 21
+# define MCP25XXFD_CAN_FIFOCON_TXAT_MASK \
+ GENMASK(MCP25XXFD_CAN_FIFOCON_TXAT_SHIFT + \
+ MCP25XXFD_CAN_FIFOCON_TXAT_BITS - 1, \
+ MCP25XXFD_CAN_FIFOCON_TXAT_SHIFT)
+# define MCP25XXFD_CAN_FIFOCON_TXAT_ONE_SHOT 0
+# define MCP25XXFD_CAN_FIFOCON_TXAT_THREE_SHOT 1
+# define MCP25XXFD_CAN_FIFOCON_TXAT_UNLIMITED 2
+# define MCP25XXFD_CAN_FIFOCON_FSIZE_BITS 5
+# define MCP25XXFD_CAN_FIFOCON_FSIZE_SHIFT 24
+# define MCP25XXFD_CAN_FIFOCON_FSIZE_MASK \
+ GENMASK(MCP25XXFD_CAN_FIFOCON_FSIZE_SHIFT + \
+ MCP25XXFD_CAN_FIFOCON_FSIZE_BITS - 1, \
+ MCP25XXFD_CAN_FIFOCON_FSIZE_SHIFT)
+# define MCP25XXFD_CAN_FIFOCON_PLSIZE_BITS 3
+# define MCP25XXFD_CAN_FIFOCON_PLSIZE_SHIFT 29
+# define MCP25XXFD_CAN_FIFOCON_PLSIZE_MASK \
+ GENMASK(MCP25XXFD_CAN_FIFOCON_PLSIZE_SHIFT + \
+ MCP25XXFD_CAN_FIFOCON_PLSIZE_BITS - 1, \
+ MCP25XXFD_CAN_FIFOCON_PLSIZE_SHIFT)
+#define MCP25XXFD_CAN_FIFOSTA(x) \
+ MCP25XXFD_CAN_SFR_BASE(0x60 + 12 * ((x) - 1))
+# define MCP25XXFD_CAN_FIFOSTA_TFNRFNIF BIT(0)
+# define MCP25XXFD_CAN_FIFOSTA_TFHRFHIF BIT(1)
+# define MCP25XXFD_CAN_FIFOSTA_TFERFFIF BIT(2)
+# define MCP25XXFD_CAN_FIFOSTA_RXOVIF BIT(3)
+# define MCP25XXFD_CAN_FIFOSTA_TXATIF BIT(4)
+# define MCP25XXFD_CAN_FIFOSTA_TXERR BIT(5)
+# define MCP25XXFD_CAN_FIFOSTA_TXLARB BIT(6)
+# define MCP25XXFD_CAN_FIFOSTA_TXABT BIT(7)
+# define MCP25XXFD_CAN_FIFOSTA_FIFOCI_BITS 5
+# define MCP25XXFD_CAN_FIFOSTA_FIFOCI_SHIFT 8
+# define MCP25XXFD_CAN_FIFOSTA_FIFOCI_MASK \
+ GENMASK(MCP25XXFD_CAN_FIFOSTA_FIFOCI_SHIFT + \
+ MCP25XXFD_CAN_FIFOSTA_FIFOCI_BITS - 1, \
+ MCP25XXFD_CAN_FIFOSTA_FIFOCI_SHIFT)
+#define MCP25XXFD_CAN_FIFOUA(x) \
+ MCP25XXFD_CAN_SFR_BASE(0x64 + 12 * ((x) - 1))
+#define MCP25XXFD_CAN_FLTCON(x) \
+ MCP25XXFD_CAN_SFR_BASE(0x1D0 + ((x) & 0x1c))
+# define MCP25XXFD_CAN_FILCON_SHIFT(x) (((x) & 3) * 8)
+# define MCP25XXFD_CAN_FILCON_BITS(x) MCP25XXFD_CAN_FILCON_BITS_
+# define MCP25XXFD_CAN_FILCON_BITS_ 4
+ /* avoid macro reuse warning, so do not use GENMASK as above */
+# define MCP25XXFD_CAN_FILCON_MASK(x) \
+ (GENMASK(MCP25XXFD_CAN_FILCON_BITS_ - 1, 0) << \
+ MCP25XXFD_CAN_FILCON_SHIFT(x))
+# define MCP25XXFD_CAN_FIFOCON_FLTEN(x) \
+ BIT(7 + MCP25XXFD_CAN_FILCON_SHIFT(x))
+#define MCP25XXFD_CAN_FLTOBJ(x) \
+ MCP25XXFD_CAN_SFR_BASE(0x1F0 + 8 * (x))
+# define MCP25XXFD_CAN_FILOBJ_SID_BITS 11
+# define MCP25XXFD_CAN_FILOBJ_SID_SHIFT 0
+# define MCP25XXFD_CAN_FILOBJ_SID_MASK \
+ GENMASK(MCP25XXFD_CAN_FILOBJ_SID_SHIFT + \
+ MCP25XXFD_CAN_FILOBJ_SID_BITS - 1, \
+ MCP25XXFD_CAN_FILOBJ_SID_SHIFT)
+# define MCP25XXFD_CAN_FILOBJ_EID_BITS 18
+# define MCP25XXFD_CAN_FILOBJ_EID_SHIFT 12
+# define MCP25XXFD_CAN_FILOBJ_EID_MASK \
+ GENMASK(MCP25XXFD_CAN_FILOBJ_EID_SHIFT + \
+ MCP25XXFD_CAN_FILOBJ_EID_BITS - 1, \
+ MCP25XXFD_CAN_FILOBJ_EID_SHIFT)
+# define MCP25XXFD_CAN_FILOBJ_SID11 BIT(29)
+# define MCP25XXFD_CAN_FILOBJ_EXIDE BIT(30)
+#define MCP25XXFD_CAN_FLTMASK(x) \
+ MCP25XXFD_CAN_SFR_BASE(0x1F4 + 8 * (x))
+# define MCP25XXFD_CAN_FILMASK_MSID_BITS 11
+# define MCP25XXFD_CAN_FILMASK_MSID_SHIFT 0
+# define MCP25XXFD_CAN_FILMASK_MSID_MASK \
+ GENMASK(MCP25XXFD_CAN_FILMASK_MSID_SHIFT + \
+ MCP25XXFD_CAN_FILMASK_MSID_BITS - 1, \
+ MCP25XXFD_CAN_FILMASK_MSID_SHIFT)
+# define MCP25XXFD_CAN_FILMASK_MEID_BITS 18
+# define MCP25XXFD_CAN_FILMASK_MEID_SHIFT 12
+# define MCP25XXFD_CAN_FILMASK_MEID_MASK \
+ GENMASK(MCP25XXFD_CAN_FILMASK_MEID_SHIFT + \
+ MCP25XXFD_CAN_FILMASK_MEID_BITS - 1, \
+ MCP25XXFD_CAN_FILMASK_MEID_SHIFT)
+# define MCP25XXFD_CAN_FILMASK_MSID11 BIT(29)
+# define MCP25XXFD_CAN_FILMASK_MIDE BIT(30)
+
+/* the FIFO Objects in SRAM */
+#define MCP25XXFD_SRAM_SIZE 2048
+#define MCP25XXFD_SRAM_ADDR(x) (0x400 + (x))
+
+/* memory structure in sram for tx fifos */
+struct mcp25xxfd_can_obj_tx {
+ u32 id;
+ u32 flags;
+ u8 data[];
+};
+
+/* memory structure in sram for rx fifos */
+struct mcp25xxfd_can_obj_rx {
+ u32 id;
+ u32 flags;
+ u32 ts;
+ u8 data[];
+};
+
+/* memory structure in sram for tef fifos */
+struct mcp25xxfd_can_obj_tef {
+ u32 id;
+ u32 flags;
+ u32 ts;
+};
+
+#define MCP25XXFD_CAN_OBJ_ID_SID_BITS 11
+#define MCP25XXFD_CAN_OBJ_ID_SID_SHIFT 0
+#define MCP25XXFD_CAN_OBJ_ID_SID_MASK \
+ GENMASK(MCP25XXFD_CAN_OBJ_ID_SID_SHIFT + \
+ MCP25XXFD_CAN_OBJ_ID_SID_BITS - 1, \
+ MCP25XXFD_CAN_OBJ_ID_SID_SHIFT)
+#define MCP25XXFD_CAN_OBJ_ID_EID_BITS 18
+#define MCP25XXFD_CAN_OBJ_ID_EID_SHIFT 11
+#define MCP25XXFD_CAN_OBJ_ID_EID_MASK \
+ GENMASK(MCP25XXFD_CAN_OBJ_ID_EID_SHIFT + \
+ MCP25XXFD_CAN_OBJ_ID_EID_BITS - 1, \
+ MCP25XXFD_CAN_OBJ_ID_EID_SHIFT)
+#define MCP25XXFD_CAN_OBJ_ID_SID_BIT11 BIT(29)
+
+#define MCP25XXFD_CAN_OBJ_FLAGS_DLC_BITS 4
+#define MCP25XXFD_CAN_OBJ_FLAGS_DLC_SHIFT 0
+#define MCP25XXFD_CAN_OBJ_FLAGS_DLC_MASK \
+ GENMASK(MCP25XXFD_CAN_OBJ_FLAGS_DLC_SHIFT + \
+ MCP25XXFD_CAN_OBJ_FLAGS_DLC_BITS - 1, \
+ MCP25XXFD_CAN_OBJ_FLAGS_DLC_SHIFT)
+#define MCP25XXFD_CAN_OBJ_FLAGS_IDE BIT(4)
+#define MCP25XXFD_CAN_OBJ_FLAGS_RTR BIT(5)
+#define MCP25XXFD_CAN_OBJ_FLAGS_BRS BIT(6)
+#define MCP25XXFD_CAN_OBJ_FLAGS_FDF BIT(7)
+#define MCP25XXFD_CAN_OBJ_FLAGS_ESI BIT(8)
+#define MCP25XXFD_CAN_OBJ_FLAGS_SEQ_BITS 7
+#define MCP25XXFD_CAN_OBJ_FLAGS_SEQ_SHIFT 9
+#define MCP25XXFD_CAN_OBJ_FLAGS_SEQ_MASK \
+ GENMASK(MCP25XXFD_CAN_OBJ_FLAGS_SEQ_SHIFT + \
+ MCP25XXFD_CAN_OBJ_FLAGS_SEQ_BITS - 1, \
+ MCP25XXFD_CAN_OBJ_FLAGS_SEQ_SHIFT)
+#define MCP25XXFD_CAN_OBJ_FLAGS_FILHIT_BITS 11
+#define MCP25XXFD_CAN_OBJ_FLAGS_FILHIT_SHIFT 5
+#define MCP25XXFD_CAN_OBJ_FLAGS_FILHIT_MASK \
+ GENMASK(MCP25XXFD_CAN_FLAGS_FILHIT_SHIFT + \
+ MCP25XXFD_CAN_FLAGS_FILHIT_BITS - 1, \
+ MCP25XXFD_CAN_FLAGS_FILHIT_SHIFT)
+
+#endif /* __MCP25XXFD_REGS_H */