Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753340AbaFPExT (ORCPT ); Mon, 16 Jun 2014 00:53:19 -0400 Received: from mail-pa0-f47.google.com ([209.85.220.47]:36225 "EHLO mail-pa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753139AbaFPExC (ORCPT ); Mon, 16 Jun 2014 00:53:02 -0400 From: Varka Bhadram X-Google-Original-From: Varka Bhadram To: netdev@vger.kernel.org Cc: alex.bluesman.smirnov@gmail.com, dbaryshkov@gmail.com, linux-zigbee-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, davem@davemloft.net, Varka Bhadram Subject: [PATCH net-next 1/3] ieee802154: cc2520: driver for TI cc2520 radio Date: Mon, 16 Jun 2014 10:21:56 +0530 Message-Id: <1402894318-30349-2-git-send-email-varkab@cdac.in> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1402894318-30349-1-git-send-email-varkab@cdac.in> References: <1402894318-30349-1-git-send-email-varkab@cdac.in> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Varka Bhadram --- drivers/net/ieee802154/cc2520.c | 805 +++++++++++++++++++++++++++++++++++++++ include/linux/spi/cc2520.h | 176 +++++++++ 2 files changed, 981 insertions(+) create mode 100644 drivers/net/ieee802154/cc2520.c create mode 100644 include/linux/spi/cc2520.h diff --git a/drivers/net/ieee802154/cc2520.c b/drivers/net/ieee802154/cc2520.c new file mode 100644 index 0000000..e8b5993 --- /dev/null +++ b/drivers/net/ieee802154/cc2520.c @@ -0,0 +1,805 @@ +/* Driver for TI CC2520 802.15.4 Wireless-PAN Networking controller + * + * Copyright (C) 2014 Varka Bhadram + * Md.Jamal Mohiuddin + * P Sowjanya + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include + +#include +#include +#include + +#include +#include + +#define SPI_COMMAND_BUFFER 3 +#define HIGH 1 +#define LOW 0 +#define STATE_IDLE 0 + +/*Driver private information */ +struct cc2520_private { + struct spi_device *spi; + + struct ieee802154_dev *dev; + + u8 *buf; + struct mutex buffer_mutex; + + unsigned is_tx:1; + int fifo_irq; + + int fifo_pin; + int fifop_pin; + + struct work_struct fifop_irqwork; + + spinlock_t lock; + + struct completion tx_complete; +}; + +/*Generic Functions*/ +static int cc2520_cmd_strobe(struct cc2520_private *priv, + u8 cmd) +{ + int ret; + u8 status = 0xff; + struct spi_message msg; + struct spi_transfer xfer = { + .len = 0, + .tx_buf = priv->buf, + .rx_buf = priv->buf, + }; + + spi_message_init(&msg); + spi_message_add_tail(&xfer, &msg); + + mutex_lock(&priv->buffer_mutex); + priv->buf[xfer.len++] = cmd; + dev_vdbg(&priv->spi->dev, + "command strobe buf[0] = %02x\n", + priv->buf[0]); + + ret = spi_sync(priv->spi, &msg); + if (!ret) + status = priv->buf[0]; + dev_vdbg(&priv->spi->dev, + "buf[0] = %02x\n", priv->buf[0]); + mutex_unlock(&priv->buffer_mutex); + + return ret; +} + +static int cc2520_get_status(struct cc2520_private *priv, + u8 *status) +{ + int ret; + struct spi_message msg; + struct spi_transfer xfer = { + .len = 0, + .tx_buf = priv->buf, + .rx_buf = priv->buf, + }; + + spi_message_init(&msg); + spi_message_add_tail(&xfer, &msg); + + mutex_lock(&priv->buffer_mutex); + priv->buf[xfer.len++] = CC2520_CMD_SNOP; + dev_vdbg(&priv->spi->dev, + "get status command buf[0] = %02x\n", priv->buf[0]); + + ret = spi_sync(priv->spi, &msg); + if (!ret) + *status = priv->buf[0]; + dev_vdbg(&priv->spi->dev, + "buf[0] = %02x\n", priv->buf[0]); + mutex_unlock(&priv->buffer_mutex); + + return ret; +} + +static int cc2520_write_register(struct cc2520_private *priv, + u8 reg, u8 value) +{ + int status; + struct spi_message msg; + struct spi_transfer xfer = { + .len = 0, + .tx_buf = priv->buf, + .rx_buf = priv->buf, + }; + + spi_message_init(&msg); + spi_message_add_tail(&xfer, &msg); + + mutex_lock(&priv->buffer_mutex); + + if (reg <= CC2520_FREG_MASK) { + priv->buf[xfer.len++] = CC2520_CMD_REGISTER_WRITE | reg; + priv->buf[xfer.len++] = value; + } else { + priv->buf[xfer.len++] = CC2520_CMD_MEMORY_WRITE; + priv->buf[xfer.len++] = reg; + priv->buf[xfer.len++] = value; + } + status = spi_sync(priv->spi, &msg); + if (msg.status) + status = msg.status; + + mutex_unlock(&priv->buffer_mutex); + + return status; +} + +static int cc2520_read_register(struct cc2520_private *priv, + u8 reg, u8 *data) +{ + + int status; + struct spi_message msg; + struct spi_transfer xfer1 = { + .len = 0, + .tx_buf = priv->buf, + .rx_buf = priv->buf, + }; + + struct spi_transfer xfer2 = { + .len = 1, + .rx_buf = data, + }; + + spi_message_init(&msg); + spi_message_add_tail(&xfer1, &msg); + spi_message_add_tail(&xfer2, &msg); + + mutex_lock(&priv->buffer_mutex); + priv->buf[xfer1.len++] = CC2520_CMD_MEMORY_READ; + priv->buf[xfer1.len++] = reg; + + status = spi_sync(priv->spi, &msg); + dev_dbg(&priv->spi->dev, + "spi status = %d\n", status); + if (msg.status) + status = msg.status; + + mutex_unlock(&priv->buffer_mutex); + + return status; +} + +static int cc2520_write_txfifo(struct cc2520_private *priv, + u8 *data, u8 len) +{ + int status; + + /* + *length byte must include FCS even + *if it is calculated in the hardware + */ + int len_byte = len + 2; + + struct spi_message msg; + + struct spi_transfer xfer_head = { + .len = 0, + .tx_buf = priv->buf, + .rx_buf = priv->buf, + }; + struct spi_transfer xfer_len = { + .len = 1, + .tx_buf = &len_byte, + }; + struct spi_transfer xfer_buf = { + .len = len, + .tx_buf = data, + }; + + spi_message_init(&msg); + spi_message_add_tail(&xfer_head, &msg); + spi_message_add_tail(&xfer_len, &msg); + spi_message_add_tail(&xfer_buf, &msg); + + mutex_lock(&priv->buffer_mutex); + priv->buf[xfer_head.len++] = CC2520_CMD_TXBUF; + dev_vdbg(&priv->spi->dev, + "TX_FIFO cmd buf[0] = %02x\n", priv->buf[0]); + + status = spi_sync(priv->spi, &msg); + dev_vdbg(&priv->spi->dev, "status = %d\n", status); + if (msg.status) + status = msg.status; + dev_vdbg(&priv->spi->dev, "status = %d\n", status); + dev_vdbg(&priv->spi->dev, "buf[0] = %02x\n", priv->buf[0]); + mutex_unlock(&priv->buffer_mutex); + + return status; +} + +static int cc2520_read_rxfifo(struct cc2520_private *priv, + u8 *data, u8 *len, u8 *lqi) +{ + int status; + struct spi_message msg; + + struct spi_transfer xfer_head = { + .len = 0, + .tx_buf = priv->buf, + .rx_buf = priv->buf, + }; + struct spi_transfer xfer_buf = { + .len = *len, + .rx_buf = data, + }; + + spi_message_init(&msg); + spi_message_add_tail(&xfer_head, &msg); + spi_message_add_tail(&xfer_buf, &msg); + + mutex_lock(&priv->buffer_mutex); + priv->buf[xfer_head.len++] = CC2520_CMD_RXBUF; + + dev_vdbg(&priv->spi->dev, "read rxfifo buf[0] = %02x\n", priv->buf[0]); + dev_vdbg(&priv->spi->dev, "buf[1] = %02x\n", priv->buf[1]); + + status = spi_sync(priv->spi, &msg); + dev_vdbg(&priv->spi->dev, "status = %d\n", status); + if (msg.status) + status = msg.status; + dev_vdbg(&priv->spi->dev, "status = %d\n", status); + dev_vdbg(&priv->spi->dev, + "return status buf[0] = %02x\n", priv->buf[0]); + dev_vdbg(&priv->spi->dev, "length buf[1] = %02x\n", priv->buf[1]); + + *lqi = data[priv->buf[1] - 1] & 0x7f; + + mutex_unlock(&priv->buffer_mutex); + + return status; +} + +static int cc2520_start(struct ieee802154_dev *dev) +{ + return cc2520_cmd_strobe(dev->priv, CC2520_CMD_SRXON); +} + +static void cc2520_stop(struct ieee802154_dev *dev) +{ + cc2520_cmd_strobe(dev->priv, CC2520_CMD_SRFOFF); +} + +static int cc2520_tx(struct ieee802154_dev *dev, struct sk_buff *skb) +{ + struct cc2520_private *priv = dev->priv; + unsigned long flags; + int rc; + u8 status = 0; + + rc = cc2520_cmd_strobe(priv, CC2520_CMD_SFLUSHTX); + if (rc) + goto err_tx; + + rc = cc2520_write_txfifo(priv, skb->data, skb->len); + if (rc) + goto err_tx; + + rc = cc2520_get_status(priv, &status); + if (rc) + goto err_tx; + + if (status & CC2520_STATUS_TX_UNDERFLOW) { + dev_err(&priv->spi->dev, "cc2520 tx underflow exception\n"); + goto err_tx; + } + + spin_lock_irqsave(&priv->lock, flags); + BUG_ON(priv->is_tx); + priv->is_tx = 1; + spin_unlock_irqrestore(&priv->lock, flags); + + rc = cc2520_cmd_strobe(priv, CC2520_CMD_STXONCCA); + if (rc) + goto err; + + rc = wait_for_completion_interruptible(&priv->tx_complete); + if (rc < 0) + goto err; + + cc2520_cmd_strobe(priv, CC2520_CMD_SFLUSHTX); + cc2520_cmd_strobe(priv, CC2520_CMD_SRXON); + + return rc; +err: + spin_lock_irqsave(&priv->lock, flags); + priv->is_tx = 0; + spin_unlock_irqrestore(&priv->lock, flags); +err_tx: + return rc; +} + + +static int cc2520_rx(struct cc2520_private *priv) +{ + u8 len = 0, lqi = 0, bytes = 1; + struct sk_buff *skb; + + cc2520_read_rxfifo(priv, &len, &bytes, &lqi); + + skb = alloc_skb(len, GFP_KERNEL); + if (!skb) + return -ENOMEM; + + cc2520_read_rxfifo(priv, skb_put(skb, len), &len, &lqi); + if (len < 2) { + kfree_skb(skb); + return -EINVAL; + } + + skb_trim(skb, skb->len - 2); + + ieee802154_rx_irqsafe(priv->dev, skb, lqi); + + dev_vdbg(&priv->spi->dev, "RXFIFO: %x %x\n", len, lqi); + + return 0; +} + +static int cc2520_ed(struct ieee802154_dev *dev, u8 *level) +{ + struct cc2520_private *priv = dev->priv; + u8 status = 0xff; + u8 rssi; + int ret; + + ret = cc2520_read_register(priv , CC2520_RSSISTAT, &status); + if (ret) + return ret; + + if (status != RSSI_VALID) { + ret = -EINVAL; + return ret; + } + + ret = cc2520_read_register(priv , CC2520_RSSI, &rssi); + if (ret) + return ret; + + /* level = RSSI(rssi) - OFFSET [dBm] : offset is 76dBm*/ + *level = rssi - RSSI_OFFSET; + + return ret; +} + +static int cc2520_set_channel(struct ieee802154_dev *dev, + int page, int channel) +{ + struct cc2520_private *priv = dev->priv; + int ret; + + might_sleep(); + dev_dbg(&priv->spi->dev, "trying to set channel\n"); + + BUG_ON(page != 0); + BUG_ON(channel < CC2520_MINCHANNEL); + BUG_ON(channel > CC2520_MAXCHANNEL); + + ret = cc2520_write_register(priv, CC2520_FREQCTRL, + 11 + 5*(channel - 11)); + + return ret; +} + +static struct ieee802154_ops cc2520_ops = { + .owner = THIS_MODULE, + .start = cc2520_start, + .stop = cc2520_stop, + .xmit = cc2520_tx, + .ed = cc2520_ed, + .set_channel = cc2520_set_channel, +}; + +static int cc2520_register(struct cc2520_private *priv) +{ + int ret = -ENOMEM; + + priv->dev = ieee802154_alloc_device(sizeof(*priv), &cc2520_ops); + if (!priv->dev) + goto err_ret; + + priv->dev->priv = priv; + priv->dev->parent = &priv->spi->dev; + priv->dev->extra_tx_headroom = 0; + + /* We do support only 2.4 Ghz */ + priv->dev->phy->channels_supported[0] = 0x7FFF800; + priv->dev->flags = IEEE802154_HW_OMIT_CKSUM; + + dev_vdbg(&priv->spi->dev, "registered cc2520\n"); + ret = ieee802154_register_device(priv->dev); + if (ret) + goto err_free_device; + + return 0; + +err_free_device: + ieee802154_free_device(priv->dev); +err_ret: + return ret; +} + +static void cc2520_unregister(struct cc2520_private *priv) +{ + ieee802154_unregister_device(priv->dev); + ieee802154_free_device(priv->dev); +} + +static void cc2520_fifop_irqwork(struct work_struct *work) +{ + struct cc2520_private *priv + = container_of(work, struct cc2520_private, fifop_irqwork); + + dev_dbg(&priv->spi->dev, "fifop interrupt received\n"); + + if (gpio_get_value(priv->fifo_pin)) + cc2520_rx(priv); + else + dev_err(&priv->spi->dev, "rxfifo overflow\n"); + + cc2520_cmd_strobe(priv, CC2520_CMD_SFLUSHRX); + cc2520_cmd_strobe(priv, CC2520_CMD_SFLUSHRX); +} + +static irqreturn_t cc2520_fifop_isr(int irq, void *data) +{ + struct cc2520_private *priv = data; + + schedule_work(&priv->fifop_irqwork); + + return IRQ_HANDLED; +} + +static irqreturn_t cc2520_sfd_isr(int irq, void *data) +{ + struct cc2520_private *priv = data; + + spin_lock(&priv->lock); + if (priv->is_tx) { + dev_dbg(&priv->spi->dev, "SFD for TX\n"); + priv->is_tx = 0; + complete(&priv->tx_complete); + } else + dev_dbg(&priv->spi->dev, "SFD for RX\n"); + spin_unlock(&priv->lock); + + return IRQ_HANDLED; +} + +static int cc2520_hw_init(struct cc2520_private *priv) +{ + u8 status = 0, state = 0xff; + int ret; + int timeout = 100; + + ret = cc2520_read_register(priv, CC2520_FSMSTAT1, &state); + if (ret) + goto err_ret; + + if (state != STATE_IDLE) { + ret = -EINVAL; + return ret; + } + + do { + ret = cc2520_get_status(priv, &status); + if (ret) + goto err_ret; + + if (timeout-- <= 0) { + dev_err(&priv->spi->dev, "oscillator start failed!\n"); + return ret; + } + udelay(1); + } while (!(status & CC2520_STATUS_XOSC32M_STABLE)); + + dev_vdbg(&priv->spi->dev, "oscillator successfully brought up\n"); + + /*Registers default value: section 28.1 in Datasheet*/ + ret = cc2520_write_register(priv, CC2520_TXPOWER, 0xF7); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_CCACTRL0, 0x1A); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_MDMCTRL0, 0x85); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_MDMCTRL1, 0x14); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_RXCTRL, 0x3f); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_FSCTRL, 0x5a); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_FSCAL1, 0x2b); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_AGCCTRL1, 0x11); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_ADCTEST0, 0x10); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_ADCTEST1, 0x0e); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_ADCTEST2, 0x03); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_FRMCTRL0, 0x60); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_FRMCTRL1, 0x03); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_FRMFILT0, 0x00); + if (ret) + goto err_ret; + + ret = cc2520_write_register(priv, CC2520_FIFOPCTRL, 127); + if (ret) + goto err_ret; + + return 0; + +err_ret: + return ret; +} + +static struct cc2520_platform_data * +cc2520_get_platform_data(struct spi_device *spi) +{ + struct cc2520_platform_data *pdata; + struct device_node __maybe_unused *np = spi->dev.of_node; + struct cc2520_private *priv = spi_get_drvdata(spi); + + if (!IS_ENABLED(CONFIG_OF) || !np) + return spi->dev.platform_data; + + pdata = devm_kzalloc(&spi->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + goto done; + + pdata->fifo = of_get_named_gpio(np, "fifo-gpio", 0); + priv->fifo_pin = pdata->fifo; + + pdata->fifop = of_get_named_gpio(np, "fifop-gpio", 0); + priv->fifop_pin = pdata->fifop; + + pdata->sfd = of_get_named_gpio(np, "sfd-gpio", 0); + pdata->cca = of_get_named_gpio(np, "cca-gpio", 0); + pdata->vreg = of_get_named_gpio(np, "vreg-gpio", 0); + pdata->reset = of_get_named_gpio(np, "reset-gpio", 0); + + spi->dev.platform_data = pdata; + +done: + return pdata; +} + +/*Driver probe function*/ +static int cc2520_probe(struct spi_device *spi) +{ + struct cc2520_private *priv; + struct pinctrl *pinctrl; + struct cc2520_platform_data *pdata; + struct device_node __maybe_unused *np = spi->dev.of_node; + int ret; + + priv = kzalloc(sizeof(struct cc2520_private), GFP_KERNEL); + if (!priv) { + ret = -ENOMEM; + goto err_free_local; + } + + spi_set_drvdata(spi, priv); + + pinctrl = devm_pinctrl_get_select_default(&spi->dev); + if (IS_ERR(pinctrl)) + dev_warn(&spi->dev, + "pinctrl pins are not configured from the driver"); + + pdata = cc2520_get_platform_data(spi); + if (!pdata) { + dev_err(&spi->dev, "no platform data\n"); + return -EINVAL; + } + + mutex_init(&priv->buffer_mutex); + INIT_WORK(&priv->fifop_irqwork, cc2520_fifop_irqwork); + spin_lock_init(&priv->lock); + init_completion(&priv->tx_complete); + + priv->spi = spi; + + priv->buf = kzalloc(SPI_COMMAND_BUFFER, GFP_KERNEL); + if (!priv->buf) { + ret = -ENOMEM; + goto err_free_buf; + } + + /*Request all the gpio's*/ + if (gpio_is_valid(pdata->fifo)) { + ret = devm_gpio_request_one(&spi->dev, pdata->fifo, + GPIOF_IN, "fifo"); + if (ret) + goto err_hw_init; + } + + if (gpio_is_valid(pdata->cca)) { + ret = devm_gpio_request_one(&spi->dev, pdata->cca, + GPIOF_IN, "cca"); + if (ret) + goto err_hw_init; + } + + if (gpio_is_valid(pdata->fifop)) { + ret = devm_gpio_request_one(&spi->dev, pdata->fifop, + GPIOF_IN, "fifop"); + if (ret) + goto err_hw_init; + } + + if (gpio_is_valid(pdata->sfd)) { + ret = devm_gpio_request_one(&spi->dev, pdata->sfd, + GPIOF_IN, "sfd"); + if (ret) + goto err_hw_init; + } + + if (gpio_is_valid(pdata->reset)) { + ret = devm_gpio_request_one(&spi->dev, pdata->reset, + GPIOF_OUT_INIT_LOW, "reset"); + if (ret) + goto err_hw_init; + } + + if (gpio_is_valid(pdata->vreg)) { + ret = devm_gpio_request_one(&spi->dev, pdata->vreg, + GPIOF_OUT_INIT_LOW, "vreg"); + if (ret) + goto err_hw_init; + } + + gpio_set_value(pdata->vreg, HIGH); + udelay(100); + + gpio_set_value(pdata->reset, HIGH); + udelay(200); + + ret = cc2520_hw_init(priv); + if (ret) + goto err_hw_init; + + /*Set up fifop interrupt */ + priv->fifo_irq = gpio_to_irq(pdata->fifop); + ret = devm_request_irq(&spi->dev, + priv->fifo_irq, + cc2520_fifop_isr, + IRQF_TRIGGER_RISING, + dev_name(&spi->dev), + priv); + if (ret) { + dev_err(&spi->dev, "could not get fifop irq\n"); + goto err_hw_init; + } + + /*Set up sfd interrupt*/ + ret = devm_request_irq(&spi->dev, + gpio_to_irq(pdata->sfd), + cc2520_sfd_isr, + IRQF_TRIGGER_FALLING, + dev_name(&spi->dev), + priv); + if (ret) { + dev_err(&spi->dev, "could not get sfd irq\n"); + goto err_hw_init; + } + + ret = cc2520_register(priv); + if (ret) + goto err_hw_init; + + return 0; + +err_hw_init: + mutex_destroy(&priv->buffer_mutex); + flush_work(&priv->fifop_irqwork); + +err_free_buf: + kfree(priv->buf); + +err_free_local: + kfree(priv); + + return ret; +} + +/*Driver remove function*/ +static int cc2520_remove(struct spi_device *spi) +{ + struct cc2520_private *priv = spi_get_drvdata(spi); + + cc2520_unregister(priv); + + mutex_destroy(&priv->buffer_mutex); + flush_work(&priv->fifop_irqwork); + + kfree(priv->buf); + kfree(priv); + + return 0; +} + +static const struct spi_device_id cc2520_ids[] = { + {"cc2520", 0}, + {}, +}; +MODULE_DEVICE_TABLE(spi, cc2520_ids); + +static const struct of_device_id cc2520_of_ids[] = { + {.compatible = "ti,cc2520", }, + {}, +}; +MODULE_DEVICE_TABLE(of, cc2520_of_ids); + +/*SPI Driver Structure*/ +static struct spi_driver cc2520_driver = { + .driver = { + .name = "cc2520", + .bus = &spi_bus_type, + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(cc2520_of_ids), + }, + .id_table = cc2520_ids, + .probe = cc2520_probe, + .remove = cc2520_remove, +}; +module_spi_driver(cc2520_driver); + +MODULE_DESCRIPTION("CC2520 Transceiver Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/spi/cc2520.h b/include/linux/spi/cc2520.h new file mode 100644 index 0000000..68a2c88 --- /dev/null +++ b/include/linux/spi/cc2520.h @@ -0,0 +1,176 @@ +#ifndef __CC2520_H +#define __CC2520_H + +#define RSSI_VALID 0 +#define RSSI_OFFSET 78 +#define CC2520_FREG_MASK 0x3F + +struct cc2520_platform_data { + int fifo; + int fifop; + int cca; + int sfd; + int reset; + int vreg; +}; + +enum cc2520_memory_size { + CC2520_RAM_SIZE = 640, + CC2520_FIFO_SIZE = 128, +}; + +enum cc2520_address { + CC2520RAM_TXFIFO = 0x100, + CC2520RAM_RXFIFO = 0x180, + CC2520RAM_IEEEADDR = 0x3EA, + CC2520RAM_PANID = 0x3F2, + CC2520RAM_SHORTADDR = 0x3F4, +}; + +/*status byte values */ +#define CC2520_STATUS_XOSC32M_STABLE (1 << 7) +#define CC2520_STATUS_RSSI_VALID (1 << 6) +#define CC2520_STATUS_TX_UNDERFLOW (1 << 3) + +/*IEEE 802.15.4 defined constants (2.4 GHz logical channels) */ +#define CC2520_MINCHANNEL 11 +#define CC2520_MAXCHANNEL 26 +#define CC2520_CHANNEL_SPACING 5 + +/*command strobes*/ +#define CC2520_CMD_SNOP 0x00 +#define CC2520_CMD_IBUFLD 0x02 +#define CC2520_CMD_SIBUFEX 0x03 +#define CC2520_CMD_SSAMPLECCA 0x04 +#define CC2520_CMD_SRES 0x0f +#define CC2520_CMD_MEMORY_MASK 0x0f +#define CC2520_CMD_MEMORY_READ 0x10 +#define CC2520_CMD_MEMORY_WRITE 0x20 +#define CC2520_CMD_RXBUF 0x30 +#define CC2520_CMD_RXBUFCP 0x38 +#define CC2520_CMD_RXBUFMOV 0x32 +#define CC2520_CMD_TXBUF 0x3A +#define CC2520_CMD_TXBUFCP 0x3E +#define CC2520_CMD_RANDOM 0x3C +#define CC2520_CMD_SXOSCON 0x40 +#define CC2520_CMD_STXCAL 0x41 +#define CC2520_CMD_SRXON 0x42 +#define CC2520_CMD_STXON 0x43 +#define CC2520_CMD_STXONCCA 0x44 +#define CC2520_CMD_SRFOFF 0x45 +#define CC2520_CMD_SXOSCOFF 0x46 +#define CC2520_CMD_SFLUSHRX 0x47 +#define CC2520_CMD_SFLUSHTX 0x48 +#define CC2520_CMD_SACK 0x49 +#define CC2520_CMD_SACKPEND 0x4A +#define CC2520_CMD_SNACK 0x4B +#define CC2520_CMD_SRXMASKBITSET 0x4C +#define CC2520_CMD_SRXMASKBITCLR 0x4D +#define CC2520_CMD_RXMASKAND 0x4E +#define CC2520_CMD_RXMASKOR 0x4F +#define CC2520_CMD_MEMCP 0x50 +#define CC2520_CMD_MEMCPR 0x52 +#define CC2520_CMD_MEMXCP 0x54 +#define CC2520_CMD_MEMXWR 0x56 +#define CC2520_CMD_BCLR 0x58 +#define CC2520_CMD_BSET 0x59 +#define CC2520_CMD_CTR_UCTR 0x60 +#define CC2520_CMD_CBCMAC 0x64 +#define CC2520_CMD_UCBCMAC 0x66 +#define CC2520_CMD_CCM 0x68 +#define CC2520_CMD_UCCM 0x6A +#define CC2520_CMD_ECB 0x70 +#define CC2520_CMD_ECBO 0x72 +#define CC2520_CMD_ECBX 0x74 +#define CC2520_CMD_INC 0x78 +#define CC2520_CMD_ABORT 0x7F +#define CC2520_CMD_REGISTER_READ 0x80 +#define CC2520_CMD_REGISTER_WRITE 0xC0 + +/* status registers */ +#define CC2520_CHIPID 0x40 +#define CC2520_VERSION 0x42 +#define CC2520_EXTCLOCK 0x44 +#define CC2520_MDMCTRL0 0x46 +#define CC2520_MDMCTRL1 0x47 +#define CC2520_FREQEST 0x48 +#define CC2520_RXCTRL 0x4A +#define CC2520_FSCTRL 0x4C +#define CC2520_FSCAL0 0x4E +#define CC2520_FSCAL1 0x4F +#define CC2520_FSCAL2 0x50 +#define CC2520_FSCAL3 0x51 +#define CC2520_AGCCTRL0 0x52 +#define CC2520_AGCCTRL1 0x53 +#define CC2520_AGCCTRL2 0x54 +#define CC2520_AGCCTRL3 0x55 +#define CC2520_ADCTEST0 0x56 +#define CC2520_ADCTEST1 0x57 +#define CC2520_ADCTEST2 0x58 +#define CC2520_MDMTEST0 0x5A +#define CC2520_MDMTEST1 0x5B +#define CC2520_DACTEST0 0x5C +#define CC2520_DACTEST1 0x5D +#define CC2520_ATEST 0x5E +#define CC2520_DACTEST2 0x5F +#define CC2520_PTEST0 0x60 +#define CC2520_PTEST1 0x61 +#define CC2520_RESERVED 0x62 +#define CC2520_DPUBIST 0x7A +#define CC2520_ACTBIST 0x7C +#define CC2520_RAMBIST 0x7E + +/*frame registers*/ +#define CC2520_FRMFILT0 0x00 +#define CC2520_FRMFILT1 0x01 +#define CC2520_SRCMATCH 0x02 +#define CC2520_SRCSHORTEN0 0x04 +#define CC2520_SRCSHORTEN1 0x05 +#define CC2520_SRCSHORTEN2 0x06 +#define CC2520_SRCEXTEN0 0x08 +#define CC2520_SRCEXTEN1 0x09 +#define CC2520_SRCEXTEN2 0x0A +#define CC2520_FRMCTRL0 0x0C +#define CC2520_FRMCTRL1 0x0D +#define CC2520_RXENABLE0 0x0E +#define CC2520_RXENABLE1 0x0F +#define CC2520_EXCFLAG0 0x10 +#define CC2520_EXCFLAG1 0x11 +#define CC2520_EXCFLAG2 0x12 +#define CC2520_EXCMASKA0 0x14 +#define CC2520_EXCMASKA1 0x15 +#define CC2520_EXCMASKA2 0x16 +#define CC2520_EXCMASKB0 0x18 +#define CC2520_EXCMASKB1 0x19 +#define CC2520_EXCMASKB2 0x1A +#define CC2520_EXCBINDX0 0x1C +#define CC2520_EXCBINDX1 0x1D +#define CC2520_EXCBINDY0 0x1E +#define CC2520_EXCBINDY1 0x1F +#define CC2520_GPIOCTRL0 0x20 +#define CC2520_GPIOCTRL1 0x21 +#define CC2520_GPIOCTRL2 0x22 +#define CC2520_GPIOCTRL3 0x23 +#define CC2520_GPIOCTRL4 0x24 +#define CC2520_GPIOCTRL5 0x25 +#define CC2520_GPIOPOLARITY 0x26 +#define CC2520_GPIOCTRL 0x28 +#define CC2520_DPUCON 0x2A +#define CC2520_DPUSTAT 0x2C +#define CC2520_FREQCTRL 0x2E +#define CC2520_FREQTUNE 0x2F +#define CC2520_TXPOWER 0x30 +#define CC2520_TXCTRL 0x31 +#define CC2520_FSMSTAT0 0x32 +#define CC2520_FSMSTAT1 0x33 +#define CC2520_FIFOPCTRL 0x34 +#define CC2520_FSMCTRL 0x35 +#define CC2520_CCACTRL0 0x36 +#define CC2520_CCACTRL1 0x37 +#define CC2520_RSSI 0x38 +#define CC2520_RSSISTAT 0x39 +#define CC2520_RXFIRST 0x3C +#define CC2520_RXFIFOCNT 0x3E +#define CC2520_TXFIFOCNT 0x3F + +#endif -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/