// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for Microchip MRF24J40 802.15.4 Wireless-PAN Networking controller * * Copyright (C) 2012 Alan Ott <[email protected]> * Signal 11 Software */ #include <linux/spi/spi.h> #include <linux/interrupt.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/regmap.h> #include <linux/ieee802154.h> #include <linux/irq.h> #include <net/cfg802154.h> #include <net/mac802154.h> /* MRF24J40 Short Address Registers */ #define REG_RXMCR … #define BIT_PROMI … #define BIT_ERRPKT … #define BIT_NOACKRSP … #define BIT_PANCOORD … #define REG_PANIDL … #define REG_PANIDH … #define REG_SADRL … #define REG_SADRH … #define REG_EADR0 … #define REG_EADR1 … #define REG_EADR2 … #define REG_EADR3 … #define REG_EADR4 … #define REG_EADR5 … #define REG_EADR6 … #define REG_EADR7 … #define REG_RXFLUSH … #define REG_ORDER … #define REG_TXMCR … #define TXMCR_MIN_BE_SHIFT … #define TXMCR_MIN_BE_MASK … #define TXMCR_CSMA_RETRIES_SHIFT … #define TXMCR_CSMA_RETRIES_MASK … #define REG_ACKTMOUT … #define REG_ESLOTG1 … #define REG_SYMTICKL … #define REG_SYMTICKH … #define REG_PACON0 … #define REG_PACON1 … #define REG_PACON2 … #define REG_TXBCON0 … #define REG_TXNCON … #define BIT_TXNTRIG … #define BIT_TXNSECEN … #define BIT_TXNACKREQ … #define REG_TXG1CON … #define REG_TXG2CON … #define REG_ESLOTG23 … #define REG_ESLOTG45 … #define REG_ESLOTG67 … #define REG_TXPEND … #define REG_WAKECON … #define REG_FROMOFFSET … #define REG_TXSTAT … #define REG_TXBCON1 … #define REG_GATECLK … #define REG_TXTIME … #define REG_HSYMTMRL … #define REG_HSYMTMRH … #define REG_SOFTRST … #define REG_SECCON0 … #define REG_SECCON1 … #define REG_TXSTBL … #define REG_RXSR … #define REG_INTSTAT … #define BIT_TXNIF … #define BIT_RXIF … #define BIT_SECIF … #define BIT_SECIGNORE … #define REG_INTCON … #define BIT_TXNIE … #define BIT_RXIE … #define BIT_SECIE … #define REG_GPIO … #define REG_TRISGPIO … #define REG_SLPACK … #define REG_RFCTL … #define BIT_RFRST … #define REG_SECCR2 … #define REG_BBREG0 … #define REG_BBREG1 … #define BIT_RXDECINV … #define REG_BBREG2 … #define BBREG2_CCA_MODE_SHIFT … #define BBREG2_CCA_MODE_MASK … #define REG_BBREG3 … #define REG_BBREG4 … #define REG_BBREG6 … #define REG_CCAEDTH … /* MRF24J40 Long Address Registers */ #define REG_RFCON0 … #define RFCON0_CH_SHIFT … #define RFCON0_CH_MASK … #define RFOPT_RECOMMEND … #define REG_RFCON1 … #define REG_RFCON2 … #define REG_RFCON3 … #define TXPWRL_MASK … #define TXPWRL_SHIFT … #define TXPWRL_30 … #define TXPWRL_20 … #define TXPWRL_10 … #define TXPWRL_0 … #define TXPWRS_MASK … #define TXPWRS_SHIFT … #define TXPWRS_6_3 … #define TXPWRS_4_9 … #define TXPWRS_3_7 … #define TXPWRS_2_8 … #define TXPWRS_1_9 … #define TXPWRS_1_2 … #define TXPWRS_0_5 … #define TXPWRS_0 … #define REG_RFCON5 … #define REG_RFCON6 … #define REG_RFCON7 … #define REG_RFCON8 … #define REG_SLPCAL0 … #define REG_SLPCAL1 … #define REG_SLPCAL2 … #define REG_RFSTATE … #define REG_RSSI … #define REG_SLPCON0 … #define BIT_INTEDGE … #define REG_SLPCON1 … #define REG_WAKETIMEL … #define REG_WAKETIMEH … #define REG_REMCNTL … #define REG_REMCNTH … #define REG_MAINCNT0 … #define REG_MAINCNT1 … #define REG_MAINCNT2 … #define REG_MAINCNT3 … #define REG_TESTMODE … #define REG_ASSOEAR0 … #define REG_ASSOEAR1 … #define REG_ASSOEAR2 … #define REG_ASSOEAR3 … #define REG_ASSOEAR4 … #define REG_ASSOEAR5 … #define REG_ASSOEAR6 … #define REG_ASSOEAR7 … #define REG_ASSOSAR0 … #define REG_ASSOSAR1 … #define REG_UNONCE0 … #define REG_UNONCE1 … #define REG_UNONCE2 … #define REG_UNONCE3 … #define REG_UNONCE4 … #define REG_UNONCE5 … #define REG_UNONCE6 … #define REG_UNONCE7 … #define REG_UNONCE8 … #define REG_UNONCE9 … #define REG_UNONCE10 … #define REG_UNONCE11 … #define REG_UNONCE12 … #define REG_RX_FIFO … /* Device configuration: Only channels 11-26 on page 0 are supported. */ #define MRF24J40_CHAN_MIN … #define MRF24J40_CHAN_MAX … #define CHANNEL_MASK … #define TX_FIFO_SIZE … #define RX_FIFO_SIZE … #define SET_CHANNEL_DELAY_US … enum mrf24j40_modules { … }; /* Device Private Data */ struct mrf24j40 { … }; /* regmap information for short address register access */ #define MRF24J40_SHORT_WRITE … #define MRF24J40_SHORT_READ … #define MRF24J40_SHORT_NUMREGS … /* regmap information for long address register access */ #define MRF24J40_LONG_ACCESS … #define MRF24J40_LONG_NUMREGS … /* Read/Write SPI Commands for Short and Long Address registers. */ #define MRF24J40_READSHORT(reg) … #define MRF24J40_WRITESHORT(reg) … #define MRF24J40_READLONG(reg) … #define MRF24J40_WRITELONG(reg) … /* The datasheet indicates the theoretical maximum for SCK to be 10MHz */ #define MAX_SPI_SPEED_HZ … #define printdev(X) … static bool mrf24j40_short_reg_writeable(struct device *dev, unsigned int reg) { … } static bool mrf24j40_short_reg_readable(struct device *dev, unsigned int reg) { … } static bool mrf24j40_short_reg_volatile(struct device *dev, unsigned int reg) { … } static bool mrf24j40_short_reg_precious(struct device *dev, unsigned int reg) { … } static const struct regmap_config mrf24j40_short_regmap = …; static bool mrf24j40_long_reg_writeable(struct device *dev, unsigned int reg) { … } static bool mrf24j40_long_reg_readable(struct device *dev, unsigned int reg) { … } static bool mrf24j40_long_reg_volatile(struct device *dev, unsigned int reg) { … } static const struct regmap_config mrf24j40_long_regmap = …; static int mrf24j40_long_regmap_write(void *context, const void *data, size_t count) { … } static int mrf24j40_long_regmap_read(void *context, const void *reg, size_t reg_size, void *val, size_t val_size) { … } static const struct regmap_bus mrf24j40_long_regmap_bus = …; static void write_tx_buf_complete(void *context) { … } /* This function relies on an undocumented write method. Once a write command and address is set, as many bytes of data as desired can be clocked into the device. The datasheet only shows setting one byte at a time. */ static int write_tx_buf(struct mrf24j40 *devrec, u16 reg, const u8 *data, size_t length) { … } static int mrf24j40_tx(struct ieee802154_hw *hw, struct sk_buff *skb) { … } static int mrf24j40_ed(struct ieee802154_hw *hw, u8 *level) { … } static int mrf24j40_start(struct ieee802154_hw *hw) { … } static void mrf24j40_stop(struct ieee802154_hw *hw) { … } static int mrf24j40_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel) { … } static int mrf24j40_filter(struct ieee802154_hw *hw, struct ieee802154_hw_addr_filt *filt, unsigned long changed) { … } static void mrf24j40_handle_rx_read_buf_unlock(struct mrf24j40 *devrec) { … } static void mrf24j40_handle_rx_read_buf_complete(void *context) { … } static void mrf24j40_handle_rx_read_buf(void *context) { … } static void mrf24j40_handle_rx_read_len(void *context) { … } static int mrf24j40_handle_rx(struct mrf24j40 *devrec) { … } static int mrf24j40_csma_params(struct ieee802154_hw *hw, u8 min_be, u8 max_be, u8 retries) { … } static int mrf24j40_set_cca_mode(struct ieee802154_hw *hw, const struct wpan_phy_cca *cca) { … } /* array for representing ed levels */ static const s32 mrf24j40_ed_levels[] = …; /* map ed levels to register value */ static const s32 mrf24j40_ed_levels_map[][2] = …; static int mrf24j40_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm) { … } static const s32 mrf24j40ma_powers[] = …; static int mrf24j40_set_txpower(struct ieee802154_hw *hw, s32 mbm) { … } static int mrf24j40_set_promiscuous_mode(struct ieee802154_hw *hw, bool on) { … } static const struct ieee802154_ops mrf24j40_ops = …; static void mrf24j40_intstat_complete(void *context) { … } static irqreturn_t mrf24j40_isr(int irq, void *data) { … } static int mrf24j40_hw_init(struct mrf24j40 *devrec) { … } static void mrf24j40_setup_tx_spi_messages(struct mrf24j40 *devrec) { … } static void mrf24j40_setup_rx_spi_messages(struct mrf24j40 *devrec) { … } static void mrf24j40_setup_irq_spi_messages(struct mrf24j40 *devrec) { … } static void mrf24j40_phy_setup(struct mrf24j40 *devrec) { … } static int mrf24j40_probe(struct spi_device *spi) { … } static void mrf24j40_remove(struct spi_device *spi) { … } static const struct of_device_id mrf24j40_of_match[] = …; MODULE_DEVICE_TABLE(of, mrf24j40_of_match); static const struct spi_device_id mrf24j40_ids[] = …; MODULE_DEVICE_TABLE(spi, mrf24j40_ids); static struct spi_driver mrf24j40_driver = …; module_spi_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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