From: Martin Sperl <ker...@martin.sperl.org> This commit adds basic driver support for the Microchip MCP25XXFD CAN-FD controller series. This driver currently supports MCP2517FD as the target controller.
The MCP2517FD is capable of transmitting and receiving standard data frames, extended data frames, remote frames and Can-FD frames. The MCP2517FD interfaces with the host over SPI. This commit provides basic driver functionality such as setting up clocks, regulators and the infrastructure for the CAN. Datasheet: * http://ww1.microchip.com/downloads/en/DeviceDoc/20005688A.pdf Reference manual: * http://ww1.microchip.com/downloads/en/DeviceDoc/20005678A.pdf Errata: * http://ww1.microchip.com/downloads/en/DeviceDoc/MCP2517FD-Silicon-Errata-and-Data-Sheet-Clarification-DS80000792A.pdf Signed-off-by: Martin Sperl <ker...@martin.sperl.org> [mani: trimmed the gpio part and done some cleanups] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasi...@linaro.org> --- drivers/net/can/spi/Kconfig | 2 + drivers/net/can/spi/Makefile | 2 + drivers/net/can/spi/mcp25xxfd/Kconfig | 5 + drivers/net/can/spi/mcp25xxfd/Makefile | 7 + .../net/can/spi/mcp25xxfd/mcp25xxfd_base.c | 171 +++++ .../net/can/spi/mcp25xxfd/mcp25xxfd_base.h | 14 + drivers/net/can/spi/mcp25xxfd/mcp25xxfd_can.c | 141 ++++ drivers/net/can/spi/mcp25xxfd/mcp25xxfd_can.h | 16 + drivers/net/can/spi/mcp25xxfd/mcp25xxfd_cmd.c | 226 ++++++ drivers/net/can/spi/mcp25xxfd/mcp25xxfd_cmd.h | 84 +++ drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.c | 31 + drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.h | 15 + drivers/net/can/spi/mcp25xxfd/mcp25xxfd_ecc.c | 74 ++ drivers/net/can/spi/mcp25xxfd/mcp25xxfd_ecc.h | 16 + drivers/net/can/spi/mcp25xxfd/mcp25xxfd_int.c | 59 ++ drivers/net/can/spi/mcp25xxfd/mcp25xxfd_int.h | 15 + .../net/can/spi/mcp25xxfd/mcp25xxfd_priv.h | 48 ++ .../net/can/spi/mcp25xxfd/mcp25xxfd_regs.h | 656 ++++++++++++++++++ 18 files changed, 1582 insertions(+) create mode 100644 drivers/net/can/spi/mcp25xxfd/Kconfig create mode 100644 drivers/net/can/spi/mcp25xxfd/Makefile create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_base.c create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_base.h create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_can.c create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_can.h create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_cmd.c create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_cmd.h create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.c create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.h create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_ecc.c create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_ecc.h create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_int.c create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_int.h create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_priv.h create mode 100644 drivers/net/can/spi/mcp25xxfd/mcp25xxfd_regs.h diff --git a/drivers/net/can/spi/Kconfig b/drivers/net/can/spi/Kconfig index 1c50788055cb..d4b68eb5d386 100644 --- a/drivers/net/can/spi/Kconfig +++ b/drivers/net/can/spi/Kconfig @@ -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 diff --git a/drivers/net/can/spi/Makefile b/drivers/net/can/spi/Makefile index f115b2c46623..f56514541ce4 100644 --- a/drivers/net/can/spi/Makefile +++ b/drivers/net/can/spi/Makefile @@ -6,3 +6,5 @@ obj-$(CONFIG_CAN_HI311X) += hi311x.o obj-$(CONFIG_CAN_MCP251X) += mcp251x.o + +obj-y += mcp25xxfd/ diff --git a/drivers/net/can/spi/mcp25xxfd/Kconfig b/drivers/net/can/spi/mcp25xxfd/Kconfig new file mode 100644 index 000000000000..f720f1377612 --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/Kconfig @@ -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. diff --git a/drivers/net/can/spi/mcp25xxfd/Makefile b/drivers/net/can/spi/mcp25xxfd/Makefile new file mode 100644 index 000000000000..d8fdb76a9578 --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/Makefile @@ -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 diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_base.c b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_base.c new file mode 100644 index 000000000000..4be456df0998 --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_base.c @@ -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 <ker...@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 <ker...@martin.sperl.org>"); +MODULE_DESCRIPTION("Microchip 25XXFD CAN driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_base.h b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_base.h new file mode 100644 index 000000000000..4559ac60645c --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_base.h @@ -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 <ker...@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 */ diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_can.c b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_can.c new file mode 100644 index 000000000000..41a5ab508582 --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_can.c @@ -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 <ker...@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); +} diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_can.h b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_can.h new file mode 100644 index 000000000000..f54c716735fb --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_can.h @@ -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 <ker...@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 */ diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_cmd.c b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_cmd.c new file mode 100644 index 000000000000..24d01e6f59d4 --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_cmd.c @@ -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 <ker...@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; +} diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_cmd.h b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_cmd.h new file mode 100644 index 000000000000..a61815f97bf6 --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_cmd.h @@ -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 <ker...@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 */ diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.c b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.c new file mode 100644 index 000000000000..b893d8009448 --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.c @@ -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 <ker...@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); +} diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.h b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.h new file mode 100644 index 000000000000..6e42fe0fad0f --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.h @@ -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 <ker...@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 */ diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_ecc.c b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_ecc.c new file mode 100644 index 000000000000..56e2c4fbf52d --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_ecc.c @@ -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 <ker...@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; +} diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_ecc.h b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_ecc.h new file mode 100644 index 000000000000..117f58c65a46 --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_ecc.h @@ -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 <ker...@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 */ diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_int.c b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_int.c new file mode 100644 index 000000000000..5e274d452646 --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_int.c @@ -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 <ker...@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; +} diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_int.h b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_int.h new file mode 100644 index 000000000000..4daf0182d1af --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_int.h @@ -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 <ker...@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 */ diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_priv.h b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_priv.h new file mode 100644 index 000000000000..8bc7a599224c --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_priv.h @@ -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 <ker...@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 */ diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_regs.h b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_regs.h new file mode 100644 index 000000000000..b500cb46b9a4 --- /dev/null +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_regs.h @@ -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 <ker...@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 */ -- 2.17.1
