2 * AT86RF230/RF231 driver
4 * Copyright (C) 2009-2012 Siemens AG
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
16 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
17 * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
18 * Alexander Aring <aar@pengutronix.de>
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/hrtimer.h>
23 #include <linux/jiffies.h>
24 #include <linux/interrupt.h>
25 #include <linux/irq.h>
26 #include <linux/gpio.h>
27 #include <linux/delay.h>
28 #include <linux/spi/spi.h>
29 #include <linux/spi/at86rf230.h>
30 #include <linux/regmap.h>
31 #include <linux/skbuff.h>
32 #include <linux/of_gpio.h>
33 #include <linux/ieee802154.h>
35 #include <net/mac802154.h>
36 #include <net/cfg802154.h>
38 #include "at86rf230.h"
40 struct at86rf230_local;
41 /* at86rf2xx chip depend data.
42 * All timings are in us.
44 struct at86rf2xx_chip_data {
56 int (*set_channel)(struct at86rf230_local *, u8, u8);
57 int (*set_txpower)(struct at86rf230_local *, s32);
60 #define AT86RF2XX_MAX_BUF (127 + 3)
61 /* tx retries to access the TX_ON state
62 * if it's above then force change will be started.
64 * We assume the max_frame_retries (7) value of 802.15.4 here.
66 #define AT86RF2XX_MAX_TX_RETRIES 7
67 /* We use the recommended 5 minutes timeout to recalibrate */
68 #define AT86RF2XX_CAL_LOOP_TIMEOUT (5 * 60 * HZ)
70 struct at86rf230_state_change {
71 struct at86rf230_local *lp;
75 struct spi_message msg;
76 struct spi_transfer trx;
77 u8 buf[AT86RF2XX_MAX_BUF];
79 void (*complete)(void *context);
86 struct at86rf230_local {
87 struct spi_device *spi;
89 struct ieee802154_hw *hw;
90 struct at86rf2xx_chip_data *data;
91 struct regmap *regmap;
95 struct completion state_complete;
96 struct at86rf230_state_change state;
98 struct at86rf230_state_change irq;
101 unsigned long cal_timeout;
102 s8 max_frame_retries;
106 struct sk_buff *tx_skb;
107 struct at86rf230_state_change tx;
110 #define AT86RF2XX_NUMREGS 0x3F
113 at86rf230_async_state_change(struct at86rf230_local *lp,
114 struct at86rf230_state_change *ctx,
115 const u8 state, void (*complete)(void *context),
116 const bool irq_enable);
119 at86rf230_sleep(struct at86rf230_local *lp)
121 if (gpio_is_valid(lp->slp_tr)) {
122 gpio_set_value(lp->slp_tr, 1);
123 usleep_range(lp->data->t_off_to_sleep,
124 lp->data->t_off_to_sleep + 10);
130 at86rf230_awake(struct at86rf230_local *lp)
132 if (gpio_is_valid(lp->slp_tr)) {
133 gpio_set_value(lp->slp_tr, 0);
134 usleep_range(lp->data->t_sleep_to_off,
135 lp->data->t_sleep_to_off + 100);
141 __at86rf230_write(struct at86rf230_local *lp,
142 unsigned int addr, unsigned int data)
144 bool sleep = lp->sleep;
147 /* awake for register setting if sleep */
151 ret = regmap_write(lp->regmap, addr, data);
153 /* sleep again if was sleeping */
161 __at86rf230_read(struct at86rf230_local *lp,
162 unsigned int addr, unsigned int *data)
164 bool sleep = lp->sleep;
167 /* awake for register setting if sleep */
171 ret = regmap_read(lp->regmap, addr, data);
173 /* sleep again if was sleeping */
181 at86rf230_read_subreg(struct at86rf230_local *lp,
182 unsigned int addr, unsigned int mask,
183 unsigned int shift, unsigned int *data)
187 rc = __at86rf230_read(lp, addr, data);
189 *data = (*data & mask) >> shift;
195 at86rf230_write_subreg(struct at86rf230_local *lp,
196 unsigned int addr, unsigned int mask,
197 unsigned int shift, unsigned int data)
199 bool sleep = lp->sleep;
202 /* awake for register setting if sleep */
206 ret = regmap_update_bits(lp->regmap, addr, mask, data << shift);
208 /* sleep again if was sleeping */
216 at86rf230_slp_tr_rising_edge(struct at86rf230_local *lp)
218 gpio_set_value(lp->slp_tr, 1);
220 gpio_set_value(lp->slp_tr, 0);
224 at86rf230_reg_writeable(struct device *dev, unsigned int reg)
231 case RG_PHY_ED_LEVEL:
247 case RG_SHORT_ADDR_0:
248 case RG_SHORT_ADDR_1:
270 at86rf230_reg_readable(struct device *dev, unsigned int reg)
274 /* all writeable are also readable */
275 rc = at86rf230_reg_writeable(dev, reg);
295 at86rf230_reg_volatile(struct device *dev, unsigned int reg)
297 /* can be changed during runtime */
302 case RG_PHY_ED_LEVEL:
314 at86rf230_reg_precious(struct device *dev, unsigned int reg)
316 /* don't clear irq line on read */
325 static const struct regmap_config at86rf230_regmap_spi_config = {
328 .write_flag_mask = CMD_REG | CMD_WRITE,
329 .read_flag_mask = CMD_REG,
330 .cache_type = REGCACHE_RBTREE,
331 .max_register = AT86RF2XX_NUMREGS,
332 .writeable_reg = at86rf230_reg_writeable,
333 .readable_reg = at86rf230_reg_readable,
334 .volatile_reg = at86rf230_reg_volatile,
335 .precious_reg = at86rf230_reg_precious,
339 at86rf230_async_error_recover(void *context)
341 struct at86rf230_state_change *ctx = context;
342 struct at86rf230_local *lp = ctx->lp;
345 at86rf230_async_state_change(lp, ctx, STATE_RX_AACK_ON, NULL, false);
346 ieee802154_wake_queue(lp->hw);
350 at86rf230_async_error(struct at86rf230_local *lp,
351 struct at86rf230_state_change *ctx, int rc)
353 dev_err(&lp->spi->dev, "spi_async error %d\n", rc);
355 at86rf230_async_state_change(lp, ctx, STATE_FORCE_TRX_OFF,
356 at86rf230_async_error_recover, false);
359 /* Generic function to get some register value in async mode */
361 at86rf230_async_read_reg(struct at86rf230_local *lp, const u8 reg,
362 struct at86rf230_state_change *ctx,
363 void (*complete)(void *context),
364 const bool irq_enable)
368 u8 *tx_buf = ctx->buf;
370 tx_buf[0] = (reg & CMD_REG_MASK) | CMD_REG;
371 ctx->msg.complete = complete;
372 ctx->irq_enable = irq_enable;
373 rc = spi_async(lp->spi, &ctx->msg);
376 enable_irq(ctx->irq);
378 at86rf230_async_error(lp, ctx, rc);
382 static inline u8 at86rf230_state_to_force(u8 state)
384 if (state == STATE_TX_ON)
385 return STATE_FORCE_TX_ON;
387 return STATE_FORCE_TRX_OFF;
391 at86rf230_async_state_assert(void *context)
393 struct at86rf230_state_change *ctx = context;
394 struct at86rf230_local *lp = ctx->lp;
395 const u8 *buf = ctx->buf;
396 const u8 trx_state = buf[1] & TRX_STATE_MASK;
398 /* Assert state change */
399 if (trx_state != ctx->to_state) {
400 /* Special handling if transceiver state is in
401 * STATE_BUSY_RX_AACK and a SHR was detected.
403 if (trx_state == STATE_BUSY_RX_AACK) {
404 /* Undocumented race condition. If we send a state
405 * change to STATE_RX_AACK_ON the transceiver could
406 * change his state automatically to STATE_BUSY_RX_AACK
407 * if a SHR was detected. This is not an error, but we
410 if (ctx->to_state == STATE_RX_AACK_ON)
413 /* If we change to STATE_TX_ON without forcing and
414 * transceiver state is STATE_BUSY_RX_AACK, we wait
415 * 'tFrame + tPAck' receiving time. In this time the
416 * PDU should be received. If the transceiver is still
417 * in STATE_BUSY_RX_AACK, we run a force state change
418 * to STATE_TX_ON. This is a timeout handling, if the
419 * transceiver stucks in STATE_BUSY_RX_AACK.
421 * Additional we do several retries to try to get into
422 * TX_ON state without forcing. If the retries are
423 * higher or equal than AT86RF2XX_MAX_TX_RETRIES we
424 * will do a force change.
426 if (ctx->to_state == STATE_TX_ON ||
427 ctx->to_state == STATE_TRX_OFF) {
428 u8 state = ctx->to_state;
430 if (lp->tx_retry >= AT86RF2XX_MAX_TX_RETRIES)
431 state = at86rf230_state_to_force(state);
434 at86rf230_async_state_change(lp, ctx, state,
441 dev_warn(&lp->spi->dev, "unexcept state change from 0x%02x to 0x%02x. Actual state: 0x%02x\n",
442 ctx->from_state, ctx->to_state, trx_state);
447 ctx->complete(context);
450 static enum hrtimer_restart at86rf230_async_state_timer(struct hrtimer *timer)
452 struct at86rf230_state_change *ctx =
453 container_of(timer, struct at86rf230_state_change, timer);
454 struct at86rf230_local *lp = ctx->lp;
456 at86rf230_async_read_reg(lp, RG_TRX_STATUS, ctx,
457 at86rf230_async_state_assert,
460 return HRTIMER_NORESTART;
463 /* Do state change timing delay. */
465 at86rf230_async_state_delay(void *context)
467 struct at86rf230_state_change *ctx = context;
468 struct at86rf230_local *lp = ctx->lp;
469 struct at86rf2xx_chip_data *c = lp->data;
473 /* The force state changes are will show as normal states in the
474 * state status subregister. We change the to_state to the
475 * corresponding one and remember if it was a force change, this
476 * differs if we do a state change from STATE_BUSY_RX_AACK.
478 switch (ctx->to_state) {
479 case STATE_FORCE_TX_ON:
480 ctx->to_state = STATE_TX_ON;
483 case STATE_FORCE_TRX_OFF:
484 ctx->to_state = STATE_TRX_OFF;
491 switch (ctx->from_state) {
493 switch (ctx->to_state) {
494 case STATE_RX_AACK_ON:
495 tim = ktime_set(0, c->t_off_to_aack * NSEC_PER_USEC);
496 /* state change from TRX_OFF to RX_AACK_ON to do a
497 * calibration, we need to reset the timeout for the
500 lp->cal_timeout = jiffies + AT86RF2XX_CAL_LOOP_TIMEOUT;
502 case STATE_TX_ARET_ON:
504 tim = ktime_set(0, c->t_off_to_tx_on * NSEC_PER_USEC);
505 /* state change from TRX_OFF to TX_ON or ARET_ON to do
506 * a calibration, we need to reset the timeout for the
509 lp->cal_timeout = jiffies + AT86RF2XX_CAL_LOOP_TIMEOUT;
515 case STATE_BUSY_RX_AACK:
516 switch (ctx->to_state) {
519 /* Wait for worst case receiving time if we
520 * didn't make a force change from BUSY_RX_AACK
521 * to TX_ON or TRX_OFF.
524 tim = ktime_set(0, (c->t_frame + c->t_p_ack) *
533 /* Default value, means RESET state */
535 switch (ctx->to_state) {
537 tim = ktime_set(0, c->t_reset_to_off * NSEC_PER_USEC);
547 /* Default delay is 1us in the most cases */
548 tim = ktime_set(0, NSEC_PER_USEC);
551 hrtimer_start(&ctx->timer, tim, HRTIMER_MODE_REL);
555 at86rf230_async_state_change_start(void *context)
557 struct at86rf230_state_change *ctx = context;
558 struct at86rf230_local *lp = ctx->lp;
560 const u8 trx_state = buf[1] & TRX_STATE_MASK;
563 /* Check for "possible" STATE_TRANSITION_IN_PROGRESS */
564 if (trx_state == STATE_TRANSITION_IN_PROGRESS) {
566 at86rf230_async_read_reg(lp, RG_TRX_STATUS, ctx,
567 at86rf230_async_state_change_start,
572 /* Check if we already are in the state which we change in */
573 if (trx_state == ctx->to_state) {
575 ctx->complete(context);
579 /* Set current state to the context of state change */
580 ctx->from_state = trx_state;
582 /* Going into the next step for a state change which do a timing
585 buf[0] = (RG_TRX_STATE & CMD_REG_MASK) | CMD_REG | CMD_WRITE;
586 buf[1] = ctx->to_state;
587 ctx->msg.complete = at86rf230_async_state_delay;
588 rc = spi_async(lp->spi, &ctx->msg);
591 enable_irq(ctx->irq);
593 at86rf230_async_error(lp, ctx, rc);
598 at86rf230_async_state_change(struct at86rf230_local *lp,
599 struct at86rf230_state_change *ctx,
600 const u8 state, void (*complete)(void *context),
601 const bool irq_enable)
603 /* Initialization for the state change context */
604 ctx->to_state = state;
605 ctx->complete = complete;
606 ctx->irq_enable = irq_enable;
607 at86rf230_async_read_reg(lp, RG_TRX_STATUS, ctx,
608 at86rf230_async_state_change_start,
613 at86rf230_sync_state_change_complete(void *context)
615 struct at86rf230_state_change *ctx = context;
616 struct at86rf230_local *lp = ctx->lp;
618 complete(&lp->state_complete);
621 /* This function do a sync framework above the async state change.
622 * Some callbacks of the IEEE 802.15.4 driver interface need to be
623 * handled synchronously.
626 at86rf230_sync_state_change(struct at86rf230_local *lp, unsigned int state)
630 at86rf230_async_state_change(lp, &lp->state, state,
631 at86rf230_sync_state_change_complete,
634 rc = wait_for_completion_timeout(&lp->state_complete,
635 msecs_to_jiffies(100));
637 at86rf230_async_error(lp, &lp->state, -ETIMEDOUT);
645 at86rf230_tx_complete(void *context)
647 struct at86rf230_state_change *ctx = context;
648 struct at86rf230_local *lp = ctx->lp;
650 enable_irq(ctx->irq);
652 ieee802154_xmit_complete(lp->hw, lp->tx_skb, !lp->tx_aret);
656 at86rf230_tx_on(void *context)
658 struct at86rf230_state_change *ctx = context;
659 struct at86rf230_local *lp = ctx->lp;
661 at86rf230_async_state_change(lp, ctx, STATE_RX_AACK_ON,
662 at86rf230_tx_complete, true);
666 at86rf230_tx_trac_check(void *context)
668 struct at86rf230_state_change *ctx = context;
669 struct at86rf230_local *lp = ctx->lp;
670 const u8 *buf = ctx->buf;
671 const u8 trac = (buf[1] & 0xe0) >> 5;
673 /* If trac status is different than zero we need to do a state change
674 * to STATE_FORCE_TRX_OFF then STATE_RX_AACK_ON to recover the
678 at86rf230_async_state_change(lp, ctx, STATE_FORCE_TRX_OFF,
679 at86rf230_tx_on, true);
681 at86rf230_tx_on(context);
685 at86rf230_tx_trac_status(void *context)
687 struct at86rf230_state_change *ctx = context;
688 struct at86rf230_local *lp = ctx->lp;
690 at86rf230_async_read_reg(lp, RG_TRX_STATE, ctx,
691 at86rf230_tx_trac_check, true);
695 at86rf230_rx_read_frame_complete(void *context)
697 struct at86rf230_state_change *ctx = context;
698 struct at86rf230_local *lp = ctx->lp;
699 u8 rx_local_buf[AT86RF2XX_MAX_BUF];
700 const u8 *buf = ctx->buf;
705 if (!ieee802154_is_valid_psdu_len(len)) {
706 dev_vdbg(&lp->spi->dev, "corrupted frame received\n");
707 len = IEEE802154_MTU;
711 memcpy(rx_local_buf, buf + 2, len);
713 enable_irq(ctx->irq);
715 skb = dev_alloc_skb(IEEE802154_MTU);
717 dev_vdbg(&lp->spi->dev, "failed to allocate sk_buff\n");
721 memcpy(skb_put(skb, len), rx_local_buf, len);
722 ieee802154_rx_irqsafe(lp->hw, skb, lqi);
726 at86rf230_rx_read_frame(void *context)
728 struct at86rf230_state_change *ctx = context;
729 struct at86rf230_local *lp = ctx->lp;
734 ctx->trx.len = AT86RF2XX_MAX_BUF;
735 ctx->msg.complete = at86rf230_rx_read_frame_complete;
736 rc = spi_async(lp->spi, &ctx->msg);
739 enable_irq(ctx->irq);
740 at86rf230_async_error(lp, ctx, rc);
745 at86rf230_rx_trac_check(void *context)
747 /* Possible check on trac status here. This could be useful to make
748 * some stats why receive is failed. Not used at the moment, but it's
749 * maybe timing relevant. Datasheet doesn't say anything about this.
750 * The programming guide say do it so.
753 at86rf230_rx_read_frame(context);
757 at86rf230_irq_trx_end(struct at86rf230_local *lp)
763 at86rf230_async_state_change(lp, &lp->irq,
765 at86rf230_tx_trac_status,
768 at86rf230_async_state_change(lp, &lp->irq,
770 at86rf230_tx_complete,
773 at86rf230_async_read_reg(lp, RG_TRX_STATE, &lp->irq,
774 at86rf230_rx_trac_check, true);
779 at86rf230_irq_status(void *context)
781 struct at86rf230_state_change *ctx = context;
782 struct at86rf230_local *lp = ctx->lp;
783 const u8 *buf = ctx->buf;
784 const u8 irq = buf[1];
786 if (irq & IRQ_TRX_END) {
787 at86rf230_irq_trx_end(lp);
789 enable_irq(ctx->irq);
790 dev_err(&lp->spi->dev, "not supported irq %02x received\n",
795 static irqreturn_t at86rf230_isr(int irq, void *data)
797 struct at86rf230_local *lp = data;
798 struct at86rf230_state_change *ctx = &lp->irq;
802 disable_irq_nosync(irq);
804 buf[0] = (RG_IRQ_STATUS & CMD_REG_MASK) | CMD_REG;
805 ctx->msg.complete = at86rf230_irq_status;
806 rc = spi_async(lp->spi, &ctx->msg);
809 at86rf230_async_error(lp, ctx, rc);
817 at86rf230_write_frame_complete(void *context)
819 struct at86rf230_state_change *ctx = context;
820 struct at86rf230_local *lp = ctx->lp;
826 if (gpio_is_valid(lp->slp_tr)) {
827 at86rf230_slp_tr_rising_edge(lp);
829 buf[0] = (RG_TRX_STATE & CMD_REG_MASK) | CMD_REG | CMD_WRITE;
830 buf[1] = STATE_BUSY_TX;
831 ctx->msg.complete = NULL;
832 rc = spi_async(lp->spi, &ctx->msg);
834 at86rf230_async_error(lp, ctx, rc);
839 at86rf230_write_frame(void *context)
841 struct at86rf230_state_change *ctx = context;
842 struct at86rf230_local *lp = ctx->lp;
843 struct sk_buff *skb = lp->tx_skb;
849 buf[0] = CMD_FB | CMD_WRITE;
850 buf[1] = skb->len + 2;
851 memcpy(buf + 2, skb->data, skb->len);
852 ctx->trx.len = skb->len + 2;
853 ctx->msg.complete = at86rf230_write_frame_complete;
854 rc = spi_async(lp->spi, &ctx->msg);
857 at86rf230_async_error(lp, ctx, rc);
862 at86rf230_xmit_tx_on(void *context)
864 struct at86rf230_state_change *ctx = context;
865 struct at86rf230_local *lp = ctx->lp;
867 at86rf230_async_state_change(lp, ctx, STATE_TX_ARET_ON,
868 at86rf230_write_frame, false);
872 at86rf230_xmit_start(void *context)
874 struct at86rf230_state_change *ctx = context;
875 struct at86rf230_local *lp = ctx->lp;
877 /* In ARET mode we need to go into STATE_TX_ARET_ON after we
878 * are in STATE_TX_ON. The pfad differs here, so we change
879 * the complete handler.
882 if (lp->is_tx_from_off) {
883 lp->is_tx_from_off = false;
884 at86rf230_async_state_change(lp, ctx, STATE_TX_ARET_ON,
885 at86rf230_write_frame,
888 at86rf230_async_state_change(lp, ctx, STATE_TX_ON,
889 at86rf230_xmit_tx_on,
893 at86rf230_async_state_change(lp, ctx, STATE_TX_ON,
894 at86rf230_write_frame, false);
899 at86rf230_xmit(struct ieee802154_hw *hw, struct sk_buff *skb)
901 struct at86rf230_local *lp = hw->priv;
902 struct at86rf230_state_change *ctx = &lp->tx;
907 /* After 5 minutes in PLL and the same frequency we run again the
908 * calibration loops which is recommended by at86rf2xx datasheets.
910 * The calibration is initiate by a state change from TRX_OFF
911 * to TX_ON, the lp->cal_timeout should be reinit by state_delay
912 * function then to start in the next 5 minutes.
914 if (time_is_before_jiffies(lp->cal_timeout)) {
915 lp->is_tx_from_off = true;
916 at86rf230_async_state_change(lp, ctx, STATE_TRX_OFF,
917 at86rf230_xmit_start, false);
919 at86rf230_xmit_start(ctx);
926 at86rf230_ed(struct ieee802154_hw *hw, u8 *level)
934 at86rf230_start(struct ieee802154_hw *hw)
936 struct at86rf230_local *lp = hw->priv;
939 enable_irq(lp->spi->irq);
941 return at86rf230_sync_state_change(lp, STATE_RX_AACK_ON);
945 at86rf230_stop(struct ieee802154_hw *hw)
947 struct at86rf230_local *lp = hw->priv;
950 at86rf230_sync_state_change(lp, STATE_FORCE_TRX_OFF);
952 disable_irq(lp->spi->irq);
954 /* It's recommended to set random new csma_seeds before sleep state.
955 * Makes only sense in the stop callback, not doing this inside of
956 * at86rf230_sleep, this is also used when we don't transmit afterwards
957 * when calling start callback again.
959 get_random_bytes(csma_seed, ARRAY_SIZE(csma_seed));
960 at86rf230_write_subreg(lp, SR_CSMA_SEED_0, csma_seed[0]);
961 at86rf230_write_subreg(lp, SR_CSMA_SEED_1, csma_seed[1]);
967 at86rf23x_set_channel(struct at86rf230_local *lp, u8 page, u8 channel)
969 return at86rf230_write_subreg(lp, SR_CHANNEL, channel);
972 #define AT86RF2XX_MAX_ED_LEVELS 0xF
973 static const s32 at86rf23x_ed_levels[AT86RF2XX_MAX_ED_LEVELS + 1] = {
974 -9100, -8900, -8700, -8500, -8300, -8100, -7900, -7700, -7500, -7300,
975 -7100, -6900, -6700, -6500, -6300, -6100,
978 static const s32 at86rf212_ed_levels_100[AT86RF2XX_MAX_ED_LEVELS + 1] = {
979 -10000, -9800, -9600, -9400, -9200, -9000, -8800, -8600, -8400, -8200,
980 -8000, -7800, -7600, -7400, -7200, -7000,
983 static const s32 at86rf212_ed_levels_98[AT86RF2XX_MAX_ED_LEVELS + 1] = {
984 -9800, -9600, -9400, -9200, -9000, -8800, -8600, -8400, -8200, -8000,
985 -7800, -7600, -7400, -7200, -7000, -6800,
989 at86rf212_update_cca_ed_level(struct at86rf230_local *lp, int rssi_base_val)
991 unsigned int cca_ed_thres;
994 rc = at86rf230_read_subreg(lp, SR_CCA_ED_THRES, &cca_ed_thres);
998 switch (rssi_base_val) {
1000 lp->hw->phy->supported.cca_ed_levels = at86rf212_ed_levels_98;
1001 lp->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(at86rf212_ed_levels_98);
1002 lp->hw->phy->cca_ed_level = at86rf212_ed_levels_98[cca_ed_thres];
1005 lp->hw->phy->supported.cca_ed_levels = at86rf212_ed_levels_100;
1006 lp->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(at86rf212_ed_levels_100);
1007 lp->hw->phy->cca_ed_level = at86rf212_ed_levels_100[cca_ed_thres];
1017 at86rf212_set_channel(struct at86rf230_local *lp, u8 page, u8 channel)
1022 rc = at86rf230_write_subreg(lp, SR_SUB_MODE, 0);
1024 rc = at86rf230_write_subreg(lp, SR_SUB_MODE, 1);
1029 rc = at86rf230_write_subreg(lp, SR_BPSK_QPSK, 0);
1030 lp->data->rssi_base_val = -100;
1032 rc = at86rf230_write_subreg(lp, SR_BPSK_QPSK, 1);
1033 lp->data->rssi_base_val = -98;
1038 rc = at86rf212_update_cca_ed_level(lp, lp->data->rssi_base_val);
1042 /* This sets the symbol_duration according frequency on the 212.
1043 * TODO move this handling while set channel and page in cfg802154.
1044 * We can do that, this timings are according 802.15.4 standard.
1045 * If we do that in cfg802154, this is a more generic calculation.
1047 * This should also protected from ifs_timer. Means cancel timer and
1048 * init with a new value. For now, this is okay.
1052 /* SUB:0 and BPSK:0 -> BPSK-20 */
1053 lp->hw->phy->symbol_duration = 50;
1055 /* SUB:1 and BPSK:0 -> BPSK-40 */
1056 lp->hw->phy->symbol_duration = 25;
1060 /* SUB:0 and BPSK:1 -> OQPSK-100/200/400 */
1061 lp->hw->phy->symbol_duration = 40;
1063 /* SUB:1 and BPSK:1 -> OQPSK-250/500/1000 */
1064 lp->hw->phy->symbol_duration = 16;
1067 lp->hw->phy->lifs_period = IEEE802154_LIFS_PERIOD *
1068 lp->hw->phy->symbol_duration;
1069 lp->hw->phy->sifs_period = IEEE802154_SIFS_PERIOD *
1070 lp->hw->phy->symbol_duration;
1072 return at86rf230_write_subreg(lp, SR_CHANNEL, channel);
1076 at86rf230_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
1078 struct at86rf230_local *lp = hw->priv;
1081 rc = lp->data->set_channel(lp, page, channel);
1083 usleep_range(lp->data->t_channel_switch,
1084 lp->data->t_channel_switch + 10);
1086 lp->cal_timeout = jiffies + AT86RF2XX_CAL_LOOP_TIMEOUT;
1091 at86rf230_set_hw_addr_filt(struct ieee802154_hw *hw,
1092 struct ieee802154_hw_addr_filt *filt,
1093 unsigned long changed)
1095 struct at86rf230_local *lp = hw->priv;
1097 if (changed & IEEE802154_AFILT_SADDR_CHANGED) {
1098 u16 addr = le16_to_cpu(filt->short_addr);
1100 dev_vdbg(&lp->spi->dev,
1101 "at86rf230_set_hw_addr_filt called for saddr\n");
1102 __at86rf230_write(lp, RG_SHORT_ADDR_0, addr);
1103 __at86rf230_write(lp, RG_SHORT_ADDR_1, addr >> 8);
1106 if (changed & IEEE802154_AFILT_PANID_CHANGED) {
1107 u16 pan = le16_to_cpu(filt->pan_id);
1109 dev_vdbg(&lp->spi->dev,
1110 "at86rf230_set_hw_addr_filt called for pan id\n");
1111 __at86rf230_write(lp, RG_PAN_ID_0, pan);
1112 __at86rf230_write(lp, RG_PAN_ID_1, pan >> 8);
1115 if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) {
1118 memcpy(addr, &filt->ieee_addr, 8);
1119 dev_vdbg(&lp->spi->dev,
1120 "at86rf230_set_hw_addr_filt called for IEEE addr\n");
1121 for (i = 0; i < 8; i++)
1122 __at86rf230_write(lp, RG_IEEE_ADDR_0 + i, addr[i]);
1125 if (changed & IEEE802154_AFILT_PANC_CHANGED) {
1126 dev_vdbg(&lp->spi->dev,
1127 "at86rf230_set_hw_addr_filt called for panc change\n");
1128 if (filt->pan_coord)
1129 at86rf230_write_subreg(lp, SR_AACK_I_AM_COORD, 1);
1131 at86rf230_write_subreg(lp, SR_AACK_I_AM_COORD, 0);
1137 #define AT86RF23X_MAX_TX_POWERS 0xF
1138 static const s32 at86rf233_powers[AT86RF23X_MAX_TX_POWERS + 1] = {
1139 400, 370, 340, 300, 250, 200, 100, 0, -100, -200, -300, -400, -600,
1143 static const s32 at86rf231_powers[AT86RF23X_MAX_TX_POWERS + 1] = {
1144 300, 280, 230, 180, 130, 70, 0, -100, -200, -300, -400, -500, -700,
1148 #define AT86RF212_MAX_TX_POWERS 0x1F
1149 static const s32 at86rf212_powers[AT86RF212_MAX_TX_POWERS + 1] = {
1150 500, 400, 300, 200, 100, 0, -100, -200, -300, -400, -500, -600, -700,
1151 -800, -900, -1000, -1100, -1200, -1300, -1400, -1500, -1600, -1700,
1152 -1800, -1900, -2000, -2100, -2200, -2300, -2400, -2500, -2600,
1156 at86rf23x_set_txpower(struct at86rf230_local *lp, s32 mbm)
1160 for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) {
1161 if (lp->hw->phy->supported.tx_powers[i] == mbm)
1162 return at86rf230_write_subreg(lp, SR_TX_PWR_23X, i);
1169 at86rf212_set_txpower(struct at86rf230_local *lp, s32 mbm)
1173 for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) {
1174 if (lp->hw->phy->supported.tx_powers[i] == mbm)
1175 return at86rf230_write_subreg(lp, SR_TX_PWR_212, i);
1182 at86rf230_set_txpower(struct ieee802154_hw *hw, s32 mbm)
1184 struct at86rf230_local *lp = hw->priv;
1186 return lp->data->set_txpower(lp, mbm);
1190 at86rf230_set_lbt(struct ieee802154_hw *hw, bool on)
1192 struct at86rf230_local *lp = hw->priv;
1194 return at86rf230_write_subreg(lp, SR_CSMA_LBT_MODE, on);
1198 at86rf230_set_cca_mode(struct ieee802154_hw *hw,
1199 const struct wpan_phy_cca *cca)
1201 struct at86rf230_local *lp = hw->priv;
1204 /* mapping 802.15.4 to driver spec */
1205 switch (cca->mode) {
1206 case NL802154_CCA_ENERGY:
1209 case NL802154_CCA_CARRIER:
1212 case NL802154_CCA_ENERGY_CARRIER:
1214 case NL802154_CCA_OPT_ENERGY_CARRIER_AND:
1217 case NL802154_CCA_OPT_ENERGY_CARRIER_OR:
1228 return at86rf230_write_subreg(lp, SR_CCA_MODE, val);
1233 at86rf230_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm)
1235 struct at86rf230_local *lp = hw->priv;
1238 for (i = 0; i < hw->phy->supported.cca_ed_levels_size; i++) {
1239 if (hw->phy->supported.cca_ed_levels[i] == mbm)
1240 return at86rf230_write_subreg(lp, SR_CCA_ED_THRES, i);
1247 at86rf230_set_csma_params(struct ieee802154_hw *hw, u8 min_be, u8 max_be,
1250 struct at86rf230_local *lp = hw->priv;
1253 rc = at86rf230_write_subreg(lp, SR_MIN_BE, min_be);
1257 rc = at86rf230_write_subreg(lp, SR_MAX_BE, max_be);
1261 return at86rf230_write_subreg(lp, SR_MAX_CSMA_RETRIES, retries);
1265 at86rf230_set_frame_retries(struct ieee802154_hw *hw, s8 retries)
1267 struct at86rf230_local *lp = hw->priv;
1270 lp->tx_aret = retries >= 0;
1271 lp->max_frame_retries = retries;
1274 rc = at86rf230_write_subreg(lp, SR_MAX_FRAME_RETRIES, retries);
1280 at86rf230_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on)
1282 struct at86rf230_local *lp = hw->priv;
1286 rc = at86rf230_write_subreg(lp, SR_AACK_DIS_ACK, 1);
1290 rc = at86rf230_write_subreg(lp, SR_AACK_PROM_MODE, 1);
1294 rc = at86rf230_write_subreg(lp, SR_AACK_PROM_MODE, 0);
1298 rc = at86rf230_write_subreg(lp, SR_AACK_DIS_ACK, 0);
1306 static const struct ieee802154_ops at86rf230_ops = {
1307 .owner = THIS_MODULE,
1308 .xmit_async = at86rf230_xmit,
1310 .set_channel = at86rf230_channel,
1311 .start = at86rf230_start,
1312 .stop = at86rf230_stop,
1313 .set_hw_addr_filt = at86rf230_set_hw_addr_filt,
1314 .set_txpower = at86rf230_set_txpower,
1315 .set_lbt = at86rf230_set_lbt,
1316 .set_cca_mode = at86rf230_set_cca_mode,
1317 .set_cca_ed_level = at86rf230_set_cca_ed_level,
1318 .set_csma_params = at86rf230_set_csma_params,
1319 .set_frame_retries = at86rf230_set_frame_retries,
1320 .set_promiscuous_mode = at86rf230_set_promiscuous_mode,
1323 static struct at86rf2xx_chip_data at86rf233_data = {
1324 .t_sleep_cycle = 330,
1325 .t_channel_switch = 11,
1326 .t_reset_to_off = 26,
1327 .t_off_to_aack = 80,
1328 .t_off_to_tx_on = 80,
1329 .t_off_to_sleep = 35,
1330 .t_sleep_to_off = 210,
1333 .rssi_base_val = -91,
1334 .set_channel = at86rf23x_set_channel,
1335 .set_txpower = at86rf23x_set_txpower,
1338 static struct at86rf2xx_chip_data at86rf231_data = {
1339 .t_sleep_cycle = 330,
1340 .t_channel_switch = 24,
1341 .t_reset_to_off = 37,
1342 .t_off_to_aack = 110,
1343 .t_off_to_tx_on = 110,
1344 .t_off_to_sleep = 35,
1345 .t_sleep_to_off = 380,
1348 .rssi_base_val = -91,
1349 .set_channel = at86rf23x_set_channel,
1350 .set_txpower = at86rf23x_set_txpower,
1353 static struct at86rf2xx_chip_data at86rf212_data = {
1354 .t_sleep_cycle = 330,
1355 .t_channel_switch = 11,
1356 .t_reset_to_off = 26,
1357 .t_off_to_aack = 200,
1358 .t_off_to_tx_on = 200,
1359 .t_off_to_sleep = 35,
1360 .t_sleep_to_off = 380,
1363 .rssi_base_val = -100,
1364 .set_channel = at86rf212_set_channel,
1365 .set_txpower = at86rf212_set_txpower,
1368 static int at86rf230_hw_init(struct at86rf230_local *lp, u8 xtal_trim)
1370 int rc, irq_type, irq_pol = IRQ_ACTIVE_HIGH;
1374 rc = at86rf230_sync_state_change(lp, STATE_FORCE_TRX_OFF);
1378 irq_type = irq_get_trigger_type(lp->spi->irq);
1379 if (irq_type == IRQ_TYPE_EDGE_RISING ||
1380 irq_type == IRQ_TYPE_EDGE_FALLING)
1381 dev_warn(&lp->spi->dev,
1382 "Using edge triggered irq's are not recommended!\n");
1383 if (irq_type == IRQ_TYPE_EDGE_FALLING ||
1384 irq_type == IRQ_TYPE_LEVEL_LOW)
1385 irq_pol = IRQ_ACTIVE_LOW;
1387 rc = at86rf230_write_subreg(lp, SR_IRQ_POLARITY, irq_pol);
1391 rc = at86rf230_write_subreg(lp, SR_RX_SAFE_MODE, 1);
1395 rc = at86rf230_write_subreg(lp, SR_IRQ_MASK, IRQ_TRX_END);
1399 /* reset values differs in at86rf231 and at86rf233 */
1400 rc = at86rf230_write_subreg(lp, SR_IRQ_MASK_MODE, 0);
1404 get_random_bytes(csma_seed, ARRAY_SIZE(csma_seed));
1405 rc = at86rf230_write_subreg(lp, SR_CSMA_SEED_0, csma_seed[0]);
1408 rc = at86rf230_write_subreg(lp, SR_CSMA_SEED_1, csma_seed[1]);
1412 /* CLKM changes are applied immediately */
1413 rc = at86rf230_write_subreg(lp, SR_CLKM_SHA_SEL, 0x00);
1418 rc = at86rf230_write_subreg(lp, SR_CLKM_CTRL, 0x00);
1421 /* Wait the next SLEEP cycle */
1422 usleep_range(lp->data->t_sleep_cycle,
1423 lp->data->t_sleep_cycle + 100);
1425 /* xtal_trim value is calculated by:
1426 * CL = 0.5 * (CX + CTRIM + CPAR)
1429 * CL = capacitor of used crystal
1430 * CX = connected capacitors at xtal pins
1431 * CPAR = in all at86rf2xx datasheets this is a constant value 3 pF,
1432 * but this is different on each board setup. You need to fine
1433 * tuning this value via CTRIM.
1434 * CTRIM = variable capacitor setting. Resolution is 0.3 pF range is
1438 * atben transceiver:
1442 * CPAR = 3 pF (We assume the magic constant from datasheet)
1445 * (12+0.9+3)/2 = 7.95 which is nearly at 8 pF
1449 * openlabs transceiver:
1453 * CPAR = 3 pF (We assume the magic constant from datasheet)
1456 * (22+4.5+3)/2 = 14.75 which is the nearest value to 16 pF
1460 rc = at86rf230_write_subreg(lp, SR_XTAL_TRIM, xtal_trim);
1464 rc = at86rf230_read_subreg(lp, SR_DVDD_OK, &dvdd);
1468 dev_err(&lp->spi->dev, "DVDD error\n");
1472 /* Force setting slotted operation bit to 0. Sometimes the atben
1473 * sets this bit and I don't know why. We set this always force
1474 * to zero while probing.
1476 return at86rf230_write_subreg(lp, SR_SLOTTED_OPERATION, 0);
1480 at86rf230_get_pdata(struct spi_device *spi, int *rstn, int *slp_tr,
1483 struct at86rf230_platform_data *pdata = spi->dev.platform_data;
1486 if (!IS_ENABLED(CONFIG_OF) || !spi->dev.of_node) {
1490 *rstn = pdata->rstn;
1491 *slp_tr = pdata->slp_tr;
1492 *xtal_trim = pdata->xtal_trim;
1496 *rstn = of_get_named_gpio(spi->dev.of_node, "reset-gpio", 0);
1497 *slp_tr = of_get_named_gpio(spi->dev.of_node, "sleep-gpio", 0);
1498 ret = of_property_read_u8(spi->dev.of_node, "xtal-trim", xtal_trim);
1499 if (ret < 0 && ret != -EINVAL)
1506 at86rf230_detect_device(struct at86rf230_local *lp)
1508 unsigned int part, version, val;
1513 rc = __at86rf230_read(lp, RG_MAN_ID_0, &val);
1518 rc = __at86rf230_read(lp, RG_MAN_ID_1, &val);
1521 man_id |= (val << 8);
1523 rc = __at86rf230_read(lp, RG_PART_NUM, &part);
1527 rc = __at86rf230_read(lp, RG_VERSION_NUM, &version);
1531 if (man_id != 0x001f) {
1532 dev_err(&lp->spi->dev, "Non-Atmel dev found (MAN_ID %02x %02x)\n",
1533 man_id >> 8, man_id & 0xFF);
1537 lp->hw->flags = IEEE802154_HW_TX_OMIT_CKSUM |
1538 IEEE802154_HW_CSMA_PARAMS |
1539 IEEE802154_HW_FRAME_RETRIES | IEEE802154_HW_AFILT |
1540 IEEE802154_HW_PROMISCUOUS;
1542 lp->hw->phy->flags = WPAN_PHY_FLAG_TXPOWER |
1543 WPAN_PHY_FLAG_CCA_ED_LEVEL |
1544 WPAN_PHY_FLAG_CCA_MODE;
1546 lp->hw->phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) |
1547 BIT(NL802154_CCA_CARRIER) | BIT(NL802154_CCA_ENERGY_CARRIER);
1548 lp->hw->phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) |
1549 BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR);
1551 lp->hw->phy->supported.cca_ed_levels = at86rf23x_ed_levels;
1552 lp->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(at86rf23x_ed_levels);
1554 lp->hw->phy->cca.mode = NL802154_CCA_ENERGY;
1563 lp->data = &at86rf231_data;
1564 lp->hw->phy->supported.channels[0] = 0x7FFF800;
1565 lp->hw->phy->current_channel = 11;
1566 lp->hw->phy->symbol_duration = 16;
1567 lp->hw->phy->supported.tx_powers = at86rf231_powers;
1568 lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf231_powers);
1572 lp->data = &at86rf212_data;
1573 lp->hw->flags |= IEEE802154_HW_LBT;
1574 lp->hw->phy->supported.channels[0] = 0x00007FF;
1575 lp->hw->phy->supported.channels[2] = 0x00007FF;
1576 lp->hw->phy->current_channel = 5;
1577 lp->hw->phy->symbol_duration = 25;
1578 lp->hw->phy->supported.lbt = NL802154_SUPPORTED_BOOL_BOTH;
1579 lp->hw->phy->supported.tx_powers = at86rf212_powers;
1580 lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf212_powers);
1581 lp->hw->phy->supported.cca_ed_levels = at86rf212_ed_levels_100;
1582 lp->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(at86rf212_ed_levels_100);
1586 lp->data = &at86rf233_data;
1587 lp->hw->phy->supported.channels[0] = 0x7FFF800;
1588 lp->hw->phy->current_channel = 13;
1589 lp->hw->phy->symbol_duration = 16;
1590 lp->hw->phy->supported.tx_powers = at86rf233_powers;
1591 lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf233_powers);
1599 lp->hw->phy->cca_ed_level = lp->hw->phy->supported.cca_ed_levels[7];
1600 lp->hw->phy->transmit_power = lp->hw->phy->supported.tx_powers[0];
1603 dev_info(&lp->spi->dev, "Detected %s chip version %d\n", chip, version);
1609 at86rf230_setup_spi_messages(struct at86rf230_local *lp)
1612 lp->state.irq = lp->spi->irq;
1613 spi_message_init(&lp->state.msg);
1614 lp->state.msg.context = &lp->state;
1615 lp->state.trx.len = 2;
1616 lp->state.trx.tx_buf = lp->state.buf;
1617 lp->state.trx.rx_buf = lp->state.buf;
1618 spi_message_add_tail(&lp->state.trx, &lp->state.msg);
1619 hrtimer_init(&lp->state.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
1620 lp->state.timer.function = at86rf230_async_state_timer;
1623 lp->irq.irq = lp->spi->irq;
1624 spi_message_init(&lp->irq.msg);
1625 lp->irq.msg.context = &lp->irq;
1626 lp->irq.trx.len = 2;
1627 lp->irq.trx.tx_buf = lp->irq.buf;
1628 lp->irq.trx.rx_buf = lp->irq.buf;
1629 spi_message_add_tail(&lp->irq.trx, &lp->irq.msg);
1630 hrtimer_init(&lp->irq.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
1631 lp->irq.timer.function = at86rf230_async_state_timer;
1634 lp->tx.irq = lp->spi->irq;
1635 spi_message_init(&lp->tx.msg);
1636 lp->tx.msg.context = &lp->tx;
1638 lp->tx.trx.tx_buf = lp->tx.buf;
1639 lp->tx.trx.rx_buf = lp->tx.buf;
1640 spi_message_add_tail(&lp->tx.trx, &lp->tx.msg);
1641 hrtimer_init(&lp->tx.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
1642 lp->tx.timer.function = at86rf230_async_state_timer;
1645 static int at86rf230_probe(struct spi_device *spi)
1647 struct ieee802154_hw *hw;
1648 struct at86rf230_local *lp;
1649 unsigned int status;
1650 int rc, irq_type, rstn, slp_tr;
1654 dev_err(&spi->dev, "no IRQ specified\n");
1658 rc = at86rf230_get_pdata(spi, &rstn, &slp_tr, &xtal_trim);
1660 dev_err(&spi->dev, "failed to parse platform_data: %d\n", rc);
1664 if (gpio_is_valid(rstn)) {
1665 rc = devm_gpio_request_one(&spi->dev, rstn,
1666 GPIOF_OUT_INIT_HIGH, "rstn");
1671 if (gpio_is_valid(slp_tr)) {
1672 rc = devm_gpio_request_one(&spi->dev, slp_tr,
1673 GPIOF_OUT_INIT_LOW, "slp_tr");
1679 if (gpio_is_valid(rstn)) {
1681 gpio_set_value(rstn, 0);
1683 gpio_set_value(rstn, 1);
1684 usleep_range(120, 240);
1687 hw = ieee802154_alloc_hw(sizeof(*lp), &at86rf230_ops);
1694 lp->slp_tr = slp_tr;
1695 hw->parent = &spi->dev;
1696 ieee802154_random_extended_addr(&hw->phy->perm_extended_addr);
1698 lp->regmap = devm_regmap_init_spi(spi, &at86rf230_regmap_spi_config);
1699 if (IS_ERR(lp->regmap)) {
1700 rc = PTR_ERR(lp->regmap);
1701 dev_err(&spi->dev, "Failed to allocate register map: %d\n",
1706 at86rf230_setup_spi_messages(lp);
1708 rc = at86rf230_detect_device(lp);
1712 init_completion(&lp->state_complete);
1714 spi_set_drvdata(spi, lp);
1716 rc = at86rf230_hw_init(lp, xtal_trim);
1720 /* Read irq status register to reset irq line */
1721 rc = at86rf230_read_subreg(lp, RG_IRQ_STATUS, 0xff, 0, &status);
1725 irq_type = irq_get_trigger_type(spi->irq);
1727 irq_type = IRQF_TRIGGER_HIGH;
1729 rc = devm_request_irq(&spi->dev, spi->irq, at86rf230_isr,
1730 IRQF_SHARED | irq_type, dev_name(&spi->dev), lp);
1734 /* disable_irq by default and wait for starting hardware */
1735 disable_irq(spi->irq);
1737 /* going into sleep by default */
1738 at86rf230_sleep(lp);
1740 rc = ieee802154_register_hw(lp->hw);
1747 ieee802154_free_hw(lp->hw);
1752 static int at86rf230_remove(struct spi_device *spi)
1754 struct at86rf230_local *lp = spi_get_drvdata(spi);
1756 /* mask all at86rf230 irq's */
1757 at86rf230_write_subreg(lp, SR_IRQ_MASK, 0);
1758 ieee802154_unregister_hw(lp->hw);
1759 ieee802154_free_hw(lp->hw);
1760 dev_dbg(&spi->dev, "unregistered at86rf230\n");
1765 static const struct of_device_id at86rf230_of_match[] = {
1766 { .compatible = "atmel,at86rf230", },
1767 { .compatible = "atmel,at86rf231", },
1768 { .compatible = "atmel,at86rf233", },
1769 { .compatible = "atmel,at86rf212", },
1772 MODULE_DEVICE_TABLE(of, at86rf230_of_match);
1774 static const struct spi_device_id at86rf230_device_id[] = {
1775 { .name = "at86rf230", },
1776 { .name = "at86rf231", },
1777 { .name = "at86rf233", },
1778 { .name = "at86rf212", },
1781 MODULE_DEVICE_TABLE(spi, at86rf230_device_id);
1783 static struct spi_driver at86rf230_driver = {
1784 .id_table = at86rf230_device_id,
1786 .of_match_table = of_match_ptr(at86rf230_of_match),
1787 .name = "at86rf230",
1788 .owner = THIS_MODULE,
1790 .probe = at86rf230_probe,
1791 .remove = at86rf230_remove,
1794 module_spi_driver(at86rf230_driver);
1796 MODULE_DESCRIPTION("AT86RF230 Transceiver Driver");
1797 MODULE_LICENSE("GPL v2");