// SPDX-License-Identifier: GPL-2.0-only /* * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller * * Copyright (C) 2018 Xue Liu <[email protected]> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/gpio/consumer.h> #include <linux/spi/spi.h> #include <linux/workqueue.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/skbuff.h> #include <linux/regmap.h> #include <linux/ieee802154.h> #include <linux/debugfs.h> #include <net/mac802154.h> #include <net/cfg802154.h> #include <linux/device.h> #include "mcr20a.h" #define SPI_COMMAND_BUFFER … #define REGISTER_READ … #define REGISTER_WRITE … #define REGISTER_ACCESS … #define PACKET_BUFF_BURST_ACCESS … #define PACKET_BUFF_BYTE_ACCESS … #define MCR20A_WRITE_REG(x) … #define MCR20A_READ_REG(x) … #define MCR20A_BURST_READ_PACKET_BUF … #define MCR20A_BURST_WRITE_PACKET_BUF … #define MCR20A_CMD_REG … #define MCR20A_CMD_REG_MASK … #define MCR20A_CMD_WRITE … #define MCR20A_CMD_FB … /* Number of Interrupt Request Status Register */ #define MCR20A_IRQSTS_NUM … /* MCR20A CCA Type */ enum { … }; enum { … }; /* IEEE-802.15.4 defined constants (2.4 GHz logical channels) */ #define MCR20A_MIN_CHANNEL … #define MCR20A_MAX_CHANNEL … #define MCR20A_CHANNEL_SPACING … /* MCR20A CCA Threshold constans */ #define MCR20A_MIN_CCA_THRESHOLD … #define MCR20A_MAX_CCA_THRESHOLD … /* version 0C */ #define MCR20A_OVERWRITE_VERSION … /* MCR20A PLL configurations */ static const u8 PLL_INT[16] = …; static const u8 PLL_FRAC[16] = …; static const struct reg_sequence mar20a_iar_overwrites[] = …; #define MCR20A_VALID_CHANNELS … #define MCR20A_MAX_BUF … #define printdev(X) … /* regmap information for Direct Access Register (DAR) access */ #define MCR20A_DAR_WRITE … #define MCR20A_DAR_READ … #define MCR20A_DAR_NUMREGS … /* regmap information for Indirect Access Register (IAR) access */ #define MCR20A_IAR_ACCESS … #define MCR20A_IAR_NUMREGS … /* Read/Write SPI Commands for DAR and IAR registers. */ #define MCR20A_READSHORT(reg) … #define MCR20A_WRITESHORT(reg) … #define MCR20A_READLONG(reg) … #define MCR20A_WRITELONG(reg) … /* Type definitions for link configuration of instantiable layers */ #define MCR20A_PHY_INDIRECT_QUEUE_SIZE … static bool mcr20a_dar_writeable(struct device *dev, unsigned int reg) { … } static bool mcr20a_dar_readable(struct device *dev, unsigned int reg) { … } static bool mcr20a_dar_volatile(struct device *dev, unsigned int reg) { … } static bool mcr20a_dar_precious(struct device *dev, unsigned int reg) { … } static const struct regmap_config mcr20a_dar_regmap = …; static bool mcr20a_iar_writeable(struct device *dev, unsigned int reg) { … } static bool mcr20a_iar_readable(struct device *dev, unsigned int reg) { … } static bool mcr20a_iar_volatile(struct device *dev, unsigned int reg) { … } static const struct regmap_config mcr20a_iar_regmap = …; struct mcr20a_local { … }; static void mcr20a_write_tx_buf_complete(void *context) { … } static int mcr20a_xmit(struct ieee802154_hw *hw, struct sk_buff *skb) { … } static int mcr20a_ed(struct ieee802154_hw *hw, u8 *level) { … } static int mcr20a_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel) { … } static int mcr20a_start(struct ieee802154_hw *hw) { … } static void mcr20a_stop(struct ieee802154_hw *hw) { … } static int mcr20a_set_hw_addr_filt(struct ieee802154_hw *hw, struct ieee802154_hw_addr_filt *filt, unsigned long changed) { … } /* -30 dBm to 10 dBm */ #define MCR20A_MAX_TX_POWERS … static const s32 mcr20a_powers[MCR20A_MAX_TX_POWERS + 1] = …; static int mcr20a_set_txpower(struct ieee802154_hw *hw, s32 mbm) { … } #define MCR20A_MAX_ED_LEVELS … static s32 mcr20a_ed_levels[MCR20A_MAX_ED_LEVELS + 1]; static int mcr20a_set_cca_mode(struct ieee802154_hw *hw, const struct wpan_phy_cca *cca) { … } static int mcr20a_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm) { … } static int mcr20a_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on) { … } static const struct ieee802154_ops mcr20a_hw_ops = …; static int mcr20a_request_rx(struct mcr20a_local *lp) { … } static void mcr20a_handle_rx_read_buf_complete(void *context) { … } static void mcr20a_handle_rx_read_len_complete(void *context) { … } static int mcr20a_handle_rx(struct mcr20a_local *lp) { … } static int mcr20a_handle_tx_complete(struct mcr20a_local *lp) { … } static int mcr20a_handle_tx(struct mcr20a_local *lp) { … } static void mcr20a_irq_clean_complete(void *context) { … } static void mcr20a_irq_status_complete(void *context) { … } static irqreturn_t mcr20a_irq_isr(int irq, void *data) { … } static void mcr20a_hw_setup(struct mcr20a_local *lp) { … } static void mcr20a_setup_tx_spi_messages(struct mcr20a_local *lp) { … } static void mcr20a_setup_rx_spi_messages(struct mcr20a_local *lp) { … } static void mcr20a_setup_irq_spi_messages(struct mcr20a_local *lp) { … } static int mcr20a_phy_init(struct mcr20a_local *lp) { … } static int mcr20a_probe(struct spi_device *spi) { … } static void mcr20a_remove(struct spi_device *spi) { … } static const struct of_device_id mcr20a_of_match[] = …; MODULE_DEVICE_TABLE(of, mcr20a_of_match); static const struct spi_device_id mcr20a_device_id[] = …; MODULE_DEVICE_TABLE(spi, mcr20a_device_id); static struct spi_driver mcr20a_driver = …; module_spi_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …;
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