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>
34 #include <linux/debugfs.h>
36 #include <net/mac802154.h>
37 #include <net/cfg802154.h>
39 #include "at86rf230.h"
41 struct at86rf230_local;
42 /* at86rf2xx chip depend data.
43 * All timings are in us.
45 struct at86rf2xx_chip_data {
57 int (*set_channel)(struct at86rf230_local *, u8, u8);
58 int (*set_txpower)(struct at86rf230_local *, s32);
61 #define AT86RF2XX_MAX_BUF (127 + 3)
62 /* tx retries to access the TX_ON state
63 * if it's above then force change will be started.
65 * We assume the max_frame_retries (7) value of 802.15.4 here.
67 #define AT86RF2XX_MAX_TX_RETRIES 7
68 /* We use the recommended 5 minutes timeout to recalibrate */
69 #define AT86RF2XX_CAL_LOOP_TIMEOUT (5 * 60 * HZ)
71 struct at86rf230_state_change {
72 struct at86rf230_local *lp;
76 struct spi_message msg;
77 struct spi_transfer trx;
78 u8 buf[AT86RF2XX_MAX_BUF];
80 void (*complete)(void *context);
87 struct at86rf230_trac {
89 u64 success_data_pending;
90 u64 success_wait_for_ack;
91 u64 channel_access_failure;
96 struct at86rf230_local {
97 struct spi_device *spi;
99 struct ieee802154_hw *hw;
100 struct at86rf2xx_chip_data *data;
101 struct regmap *regmap;
105 struct completion state_complete;
106 struct at86rf230_state_change state;
108 struct at86rf230_state_change irq;
110 unsigned long cal_timeout;
114 struct sk_buff *tx_skb;
115 struct at86rf230_state_change tx;
117 struct at86rf230_trac trac;
120 #define AT86RF2XX_NUMREGS 0x3F
123 at86rf230_async_state_change(struct at86rf230_local *lp,
124 struct at86rf230_state_change *ctx,
125 const u8 state, void (*complete)(void *context),
126 const bool irq_enable);
129 at86rf230_sleep(struct at86rf230_local *lp)
131 if (gpio_is_valid(lp->slp_tr)) {
132 gpio_set_value(lp->slp_tr, 1);
133 usleep_range(lp->data->t_off_to_sleep,
134 lp->data->t_off_to_sleep + 10);
140 at86rf230_awake(struct at86rf230_local *lp)
142 if (gpio_is_valid(lp->slp_tr)) {
143 gpio_set_value(lp->slp_tr, 0);
144 usleep_range(lp->data->t_sleep_to_off,
145 lp->data->t_sleep_to_off + 100);
151 __at86rf230_write(struct at86rf230_local *lp,
152 unsigned int addr, unsigned int data)
154 bool sleep = lp->sleep;
157 /* awake for register setting if sleep */
161 ret = regmap_write(lp->regmap, addr, data);
163 /* sleep again if was sleeping */
171 __at86rf230_read(struct at86rf230_local *lp,
172 unsigned int addr, unsigned int *data)
174 bool sleep = lp->sleep;
177 /* awake for register setting if sleep */
181 ret = regmap_read(lp->regmap, addr, data);
183 /* sleep again if was sleeping */
191 at86rf230_read_subreg(struct at86rf230_local *lp,
192 unsigned int addr, unsigned int mask,
193 unsigned int shift, unsigned int *data)
197 rc = __at86rf230_read(lp, addr, data);
199 *data = (*data & mask) >> shift;
205 at86rf230_write_subreg(struct at86rf230_local *lp,
206 unsigned int addr, unsigned int mask,
207 unsigned int shift, unsigned int data)
209 bool sleep = lp->sleep;
212 /* awake for register setting if sleep */
216 ret = regmap_update_bits(lp->regmap, addr, mask, data << shift);
218 /* sleep again if was sleeping */
226 at86rf230_slp_tr_rising_edge(struct at86rf230_local *lp)
228 gpio_set_value(lp->slp_tr, 1);
230 gpio_set_value(lp->slp_tr, 0);
234 at86rf230_reg_writeable(struct device *dev, unsigned int reg)
241 case RG_PHY_ED_LEVEL:
257 case RG_SHORT_ADDR_0:
258 case RG_SHORT_ADDR_1:
280 at86rf230_reg_readable(struct device *dev, unsigned int reg)
284 /* all writeable are also readable */
285 rc = at86rf230_reg_writeable(dev, reg);
305 at86rf230_reg_volatile(struct device *dev, unsigned int reg)
307 /* can be changed during runtime */
312 case RG_PHY_ED_LEVEL:
324 at86rf230_reg_precious(struct device *dev, unsigned int reg)
326 /* don't clear irq line on read */
335 static const struct regmap_config at86rf230_regmap_spi_config = {
338 .write_flag_mask = CMD_REG | CMD_WRITE,
339 .read_flag_mask = CMD_REG,
340 .cache_type = REGCACHE_RBTREE,
341 .max_register = AT86RF2XX_NUMREGS,
342 .writeable_reg = at86rf230_reg_writeable,
343 .readable_reg = at86rf230_reg_readable,
344 .volatile_reg = at86rf230_reg_volatile,
345 .precious_reg = at86rf230_reg_precious,
349 at86rf230_async_error_recover(void *context)
351 struct at86rf230_state_change *ctx = context;
352 struct at86rf230_local *lp = ctx->lp;
355 at86rf230_async_state_change(lp, ctx, STATE_RX_AACK_ON, NULL, false);
356 ieee802154_wake_queue(lp->hw);
360 at86rf230_async_error(struct at86rf230_local *lp,
361 struct at86rf230_state_change *ctx, int rc)
363 dev_err(&lp->spi->dev, "spi_async error %d\n", rc);
365 at86rf230_async_state_change(lp, ctx, STATE_FORCE_TRX_OFF,
366 at86rf230_async_error_recover, false);
369 /* Generic function to get some register value in async mode */
371 at86rf230_async_read_reg(struct at86rf230_local *lp, const u8 reg,
372 struct at86rf230_state_change *ctx,
373 void (*complete)(void *context),
374 const bool irq_enable)
378 u8 *tx_buf = ctx->buf;
380 tx_buf[0] = (reg & CMD_REG_MASK) | CMD_REG;
381 ctx->msg.complete = complete;
382 ctx->irq_enable = irq_enable;
383 rc = spi_async(lp->spi, &ctx->msg);
386 enable_irq(ctx->irq);
388 at86rf230_async_error(lp, ctx, rc);
393 at86rf230_async_state_assert(void *context)
395 struct at86rf230_state_change *ctx = context;
396 struct at86rf230_local *lp = ctx->lp;
397 const u8 *buf = ctx->buf;
398 const u8 trx_state = buf[1] & TRX_STATE_MASK;
400 /* Assert state change */
401 if (trx_state != ctx->to_state) {
402 /* Special handling if transceiver state is in
403 * STATE_BUSY_RX_AACK and a SHR was detected.
405 if (trx_state == STATE_BUSY_RX_AACK) {
406 /* Undocumented race condition. If we send a state
407 * change to STATE_RX_AACK_ON the transceiver could
408 * change his state automatically to STATE_BUSY_RX_AACK
409 * if a SHR was detected. This is not an error, but we
412 if (ctx->to_state == STATE_RX_AACK_ON)
415 /* If we change to STATE_TX_ON without forcing and
416 * transceiver state is STATE_BUSY_RX_AACK, we wait
417 * 'tFrame + tPAck' receiving time. In this time the
418 * PDU should be received. If the transceiver is still
419 * in STATE_BUSY_RX_AACK, we run a force state change
420 * to STATE_TX_ON. This is a timeout handling, if the
421 * transceiver stucks in STATE_BUSY_RX_AACK.
423 * Additional we do several retries to try to get into
424 * TX_ON state without forcing. If the retries are
425 * higher or equal than AT86RF2XX_MAX_TX_RETRIES we
426 * will do a force change.
428 if (ctx->to_state == STATE_TX_ON ||
429 ctx->to_state == STATE_TRX_OFF) {
430 u8 state = ctx->to_state;
432 if (lp->tx_retry >= AT86RF2XX_MAX_TX_RETRIES)
433 state = STATE_FORCE_TRX_OFF;
436 at86rf230_async_state_change(lp, ctx, state,
443 dev_warn(&lp->spi->dev, "unexcept state change from 0x%02x to 0x%02x. Actual state: 0x%02x\n",
444 ctx->from_state, ctx->to_state, trx_state);
449 ctx->complete(context);
452 static enum hrtimer_restart at86rf230_async_state_timer(struct hrtimer *timer)
454 struct at86rf230_state_change *ctx =
455 container_of(timer, struct at86rf230_state_change, timer);
456 struct at86rf230_local *lp = ctx->lp;
458 at86rf230_async_read_reg(lp, RG_TRX_STATUS, ctx,
459 at86rf230_async_state_assert,
462 return HRTIMER_NORESTART;
465 /* Do state change timing delay. */
467 at86rf230_async_state_delay(void *context)
469 struct at86rf230_state_change *ctx = context;
470 struct at86rf230_local *lp = ctx->lp;
471 struct at86rf2xx_chip_data *c = lp->data;
475 /* The force state changes are will show as normal states in the
476 * state status subregister. We change the to_state to the
477 * corresponding one and remember if it was a force change, this
478 * differs if we do a state change from STATE_BUSY_RX_AACK.
480 switch (ctx->to_state) {
481 case STATE_FORCE_TX_ON:
482 ctx->to_state = STATE_TX_ON;
485 case STATE_FORCE_TRX_OFF:
486 ctx->to_state = STATE_TRX_OFF;
493 switch (ctx->from_state) {
495 switch (ctx->to_state) {
496 case STATE_RX_AACK_ON:
497 tim = ktime_set(0, c->t_off_to_aack * NSEC_PER_USEC);
498 /* state change from TRX_OFF to RX_AACK_ON to do a
499 * calibration, we need to reset the timeout for the
502 lp->cal_timeout = jiffies + AT86RF2XX_CAL_LOOP_TIMEOUT;
504 case STATE_TX_ARET_ON:
506 tim = ktime_set(0, c->t_off_to_tx_on * NSEC_PER_USEC);
507 /* state change from TRX_OFF to TX_ON or ARET_ON to do
508 * a calibration, we need to reset the timeout for the
511 lp->cal_timeout = jiffies + AT86RF2XX_CAL_LOOP_TIMEOUT;
517 case STATE_BUSY_RX_AACK:
518 switch (ctx->to_state) {
521 /* Wait for worst case receiving time if we
522 * didn't make a force change from BUSY_RX_AACK
523 * to TX_ON or TRX_OFF.
526 tim = ktime_set(0, (c->t_frame + c->t_p_ack) *
535 /* Default value, means RESET state */
537 switch (ctx->to_state) {
539 tim = ktime_set(0, c->t_reset_to_off * NSEC_PER_USEC);
549 /* Default delay is 1us in the most cases */
551 at86rf230_async_state_timer(&ctx->timer);
555 hrtimer_start(&ctx->timer, tim, HRTIMER_MODE_REL);
559 at86rf230_async_state_change_start(void *context)
561 struct at86rf230_state_change *ctx = context;
562 struct at86rf230_local *lp = ctx->lp;
564 const u8 trx_state = buf[1] & TRX_STATE_MASK;
567 /* Check for "possible" STATE_TRANSITION_IN_PROGRESS */
568 if (trx_state == STATE_TRANSITION_IN_PROGRESS) {
570 at86rf230_async_read_reg(lp, RG_TRX_STATUS, ctx,
571 at86rf230_async_state_change_start,
576 /* Check if we already are in the state which we change in */
577 if (trx_state == ctx->to_state) {
579 ctx->complete(context);
583 /* Set current state to the context of state change */
584 ctx->from_state = trx_state;
586 /* Going into the next step for a state change which do a timing
589 buf[0] = (RG_TRX_STATE & CMD_REG_MASK) | CMD_REG | CMD_WRITE;
590 buf[1] = ctx->to_state;
591 ctx->msg.complete = at86rf230_async_state_delay;
592 rc = spi_async(lp->spi, &ctx->msg);
595 enable_irq(ctx->irq);
597 at86rf230_async_error(lp, ctx, rc);
602 at86rf230_async_state_change(struct at86rf230_local *lp,
603 struct at86rf230_state_change *ctx,
604 const u8 state, void (*complete)(void *context),
605 const bool irq_enable)
607 /* Initialization for the state change context */
608 ctx->to_state = state;
609 ctx->complete = complete;
610 ctx->irq_enable = irq_enable;
611 at86rf230_async_read_reg(lp, RG_TRX_STATUS, ctx,
612 at86rf230_async_state_change_start,
617 at86rf230_sync_state_change_complete(void *context)
619 struct at86rf230_state_change *ctx = context;
620 struct at86rf230_local *lp = ctx->lp;
622 complete(&lp->state_complete);
625 /* This function do a sync framework above the async state change.
626 * Some callbacks of the IEEE 802.15.4 driver interface need to be
627 * handled synchronously.
630 at86rf230_sync_state_change(struct at86rf230_local *lp, unsigned int state)
634 at86rf230_async_state_change(lp, &lp->state, state,
635 at86rf230_sync_state_change_complete,
638 rc = wait_for_completion_timeout(&lp->state_complete,
639 msecs_to_jiffies(100));
641 at86rf230_async_error(lp, &lp->state, -ETIMEDOUT);
649 at86rf230_tx_complete(void *context)
651 struct at86rf230_state_change *ctx = context;
652 struct at86rf230_local *lp = ctx->lp;
654 enable_irq(ctx->irq);
656 ieee802154_xmit_complete(lp->hw, lp->tx_skb, false);
660 at86rf230_tx_on(void *context)
662 struct at86rf230_state_change *ctx = context;
663 struct at86rf230_local *lp = ctx->lp;
665 at86rf230_async_state_change(lp, ctx, STATE_RX_AACK_ON,
666 at86rf230_tx_complete, true);
670 at86rf230_tx_trac_check(void *context)
672 struct at86rf230_state_change *ctx = context;
673 struct at86rf230_local *lp = ctx->lp;
675 if (IS_ENABLED(CONFIG_IEEE802154_AT86RF230_DEBUGFS)) {
676 u8 trac = TRAC_MASK(ctx->buf[1]);
682 case TRAC_SUCCESS_DATA_PENDING:
683 lp->trac.success_data_pending++;
685 case TRAC_CHANNEL_ACCESS_FAILURE:
686 lp->trac.channel_access_failure++;
695 WARN_ONCE(1, "received tx trac status %d\n", trac);
700 at86rf230_async_state_change(lp, &lp->irq, STATE_TX_ON,
701 at86rf230_tx_on, true);
705 at86rf230_rx_read_frame_complete(void *context)
707 struct at86rf230_state_change *ctx = context;
708 struct at86rf230_local *lp = ctx->lp;
709 u8 rx_local_buf[AT86RF2XX_MAX_BUF];
710 const u8 *buf = ctx->buf;
715 if (!ieee802154_is_valid_psdu_len(len)) {
716 dev_vdbg(&lp->spi->dev, "corrupted frame received\n");
717 len = IEEE802154_MTU;
721 memcpy(rx_local_buf, buf + 2, len);
723 enable_irq(ctx->irq);
725 skb = dev_alloc_skb(IEEE802154_MTU);
727 dev_vdbg(&lp->spi->dev, "failed to allocate sk_buff\n");
731 memcpy(skb_put(skb, len), rx_local_buf, len);
732 ieee802154_rx_irqsafe(lp->hw, skb, lqi);
736 at86rf230_rx_trac_check(void *context)
738 struct at86rf230_state_change *ctx = context;
739 struct at86rf230_local *lp = ctx->lp;
743 if (IS_ENABLED(CONFIG_IEEE802154_AT86RF230_DEBUGFS)) {
744 u8 trac = TRAC_MASK(buf[1]);
750 case TRAC_SUCCESS_WAIT_FOR_ACK:
751 lp->trac.success_wait_for_ack++;
757 WARN_ONCE(1, "received rx trac status %d\n", trac);
763 ctx->trx.len = AT86RF2XX_MAX_BUF;
764 ctx->msg.complete = at86rf230_rx_read_frame_complete;
765 rc = spi_async(lp->spi, &ctx->msg);
768 enable_irq(ctx->irq);
769 at86rf230_async_error(lp, ctx, rc);
774 at86rf230_irq_trx_end(struct at86rf230_local *lp)
778 at86rf230_async_read_reg(lp, RG_TRX_STATE, &lp->irq,
779 at86rf230_tx_trac_check, true);
781 at86rf230_async_read_reg(lp, RG_TRX_STATE, &lp->irq,
782 at86rf230_rx_trac_check, true);
787 at86rf230_irq_status(void *context)
789 struct at86rf230_state_change *ctx = context;
790 struct at86rf230_local *lp = ctx->lp;
791 const u8 *buf = ctx->buf;
792 const u8 irq = buf[1];
794 if (irq & IRQ_TRX_END) {
795 at86rf230_irq_trx_end(lp);
797 enable_irq(ctx->irq);
798 dev_err(&lp->spi->dev, "not supported irq %02x received\n",
803 static irqreturn_t at86rf230_isr(int irq, void *data)
805 struct at86rf230_local *lp = data;
806 struct at86rf230_state_change *ctx = &lp->irq;
810 disable_irq_nosync(irq);
812 buf[0] = (RG_IRQ_STATUS & CMD_REG_MASK) | CMD_REG;
813 ctx->msg.complete = at86rf230_irq_status;
814 rc = spi_async(lp->spi, &ctx->msg);
817 at86rf230_async_error(lp, ctx, rc);
825 at86rf230_write_frame_complete(void *context)
827 struct at86rf230_state_change *ctx = context;
828 struct at86rf230_local *lp = ctx->lp;
834 if (gpio_is_valid(lp->slp_tr)) {
835 at86rf230_slp_tr_rising_edge(lp);
837 buf[0] = (RG_TRX_STATE & CMD_REG_MASK) | CMD_REG | CMD_WRITE;
838 buf[1] = STATE_BUSY_TX;
839 ctx->msg.complete = NULL;
840 rc = spi_async(lp->spi, &ctx->msg);
842 at86rf230_async_error(lp, ctx, rc);
847 at86rf230_write_frame(void *context)
849 struct at86rf230_state_change *ctx = context;
850 struct at86rf230_local *lp = ctx->lp;
851 struct sk_buff *skb = lp->tx_skb;
857 buf[0] = CMD_FB | CMD_WRITE;
858 buf[1] = skb->len + 2;
859 memcpy(buf + 2, skb->data, skb->len);
860 ctx->trx.len = skb->len + 2;
861 ctx->msg.complete = at86rf230_write_frame_complete;
862 rc = spi_async(lp->spi, &ctx->msg);
865 at86rf230_async_error(lp, ctx, rc);
870 at86rf230_xmit_tx_on(void *context)
872 struct at86rf230_state_change *ctx = context;
873 struct at86rf230_local *lp = ctx->lp;
875 at86rf230_async_state_change(lp, ctx, STATE_TX_ARET_ON,
876 at86rf230_write_frame, false);
880 at86rf230_xmit_start(void *context)
882 struct at86rf230_state_change *ctx = context;
883 struct at86rf230_local *lp = ctx->lp;
885 /* check if we change from off state */
886 if (lp->is_tx_from_off) {
887 lp->is_tx_from_off = false;
888 at86rf230_async_state_change(lp, ctx, STATE_TX_ARET_ON,
889 at86rf230_write_frame,
892 at86rf230_async_state_change(lp, ctx, STATE_TX_ON,
893 at86rf230_xmit_tx_on,
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;
938 /* reset trac stats on start */
939 if (IS_ENABLED(CONFIG_IEEE802154_AT86RF230_DEBUGFS))
940 memset(&lp->trac, 0, sizeof(struct at86rf230_trac));
943 enable_irq(lp->spi->irq);
945 return at86rf230_sync_state_change(lp, STATE_RX_AACK_ON);
949 at86rf230_stop(struct ieee802154_hw *hw)
951 struct at86rf230_local *lp = hw->priv;
954 at86rf230_sync_state_change(lp, STATE_FORCE_TRX_OFF);
956 disable_irq(lp->spi->irq);
958 /* It's recommended to set random new csma_seeds before sleep state.
959 * Makes only sense in the stop callback, not doing this inside of
960 * at86rf230_sleep, this is also used when we don't transmit afterwards
961 * when calling start callback again.
963 get_random_bytes(csma_seed, ARRAY_SIZE(csma_seed));
964 at86rf230_write_subreg(lp, SR_CSMA_SEED_0, csma_seed[0]);
965 at86rf230_write_subreg(lp, SR_CSMA_SEED_1, csma_seed[1]);
971 at86rf23x_set_channel(struct at86rf230_local *lp, u8 page, u8 channel)
973 return at86rf230_write_subreg(lp, SR_CHANNEL, channel);
976 #define AT86RF2XX_MAX_ED_LEVELS 0xF
977 static const s32 at86rf23x_ed_levels[AT86RF2XX_MAX_ED_LEVELS + 1] = {
978 -9100, -8900, -8700, -8500, -8300, -8100, -7900, -7700, -7500, -7300,
979 -7100, -6900, -6700, -6500, -6300, -6100,
982 static const s32 at86rf212_ed_levels_100[AT86RF2XX_MAX_ED_LEVELS + 1] = {
983 -10000, -9800, -9600, -9400, -9200, -9000, -8800, -8600, -8400, -8200,
984 -8000, -7800, -7600, -7400, -7200, -7000,
987 static const s32 at86rf212_ed_levels_98[AT86RF2XX_MAX_ED_LEVELS + 1] = {
988 -9800, -9600, -9400, -9200, -9000, -8800, -8600, -8400, -8200, -8000,
989 -7800, -7600, -7400, -7200, -7000, -6800,
993 at86rf212_update_cca_ed_level(struct at86rf230_local *lp, int rssi_base_val)
995 unsigned int cca_ed_thres;
998 rc = at86rf230_read_subreg(lp, SR_CCA_ED_THRES, &cca_ed_thres);
1002 switch (rssi_base_val) {
1004 lp->hw->phy->supported.cca_ed_levels = at86rf212_ed_levels_98;
1005 lp->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(at86rf212_ed_levels_98);
1006 lp->hw->phy->cca_ed_level = at86rf212_ed_levels_98[cca_ed_thres];
1009 lp->hw->phy->supported.cca_ed_levels = at86rf212_ed_levels_100;
1010 lp->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(at86rf212_ed_levels_100);
1011 lp->hw->phy->cca_ed_level = at86rf212_ed_levels_100[cca_ed_thres];
1021 at86rf212_set_channel(struct at86rf230_local *lp, u8 page, u8 channel)
1026 rc = at86rf230_write_subreg(lp, SR_SUB_MODE, 0);
1028 rc = at86rf230_write_subreg(lp, SR_SUB_MODE, 1);
1033 rc = at86rf230_write_subreg(lp, SR_BPSK_QPSK, 0);
1034 lp->data->rssi_base_val = -100;
1036 rc = at86rf230_write_subreg(lp, SR_BPSK_QPSK, 1);
1037 lp->data->rssi_base_val = -98;
1042 rc = at86rf212_update_cca_ed_level(lp, lp->data->rssi_base_val);
1046 /* This sets the symbol_duration according frequency on the 212.
1047 * TODO move this handling while set channel and page in cfg802154.
1048 * We can do that, this timings are according 802.15.4 standard.
1049 * If we do that in cfg802154, this is a more generic calculation.
1051 * This should also protected from ifs_timer. Means cancel timer and
1052 * init with a new value. For now, this is okay.
1056 /* SUB:0 and BPSK:0 -> BPSK-20 */
1057 lp->hw->phy->symbol_duration = 50;
1059 /* SUB:1 and BPSK:0 -> BPSK-40 */
1060 lp->hw->phy->symbol_duration = 25;
1064 /* SUB:0 and BPSK:1 -> OQPSK-100/200/400 */
1065 lp->hw->phy->symbol_duration = 40;
1067 /* SUB:1 and BPSK:1 -> OQPSK-250/500/1000 */
1068 lp->hw->phy->symbol_duration = 16;
1071 lp->hw->phy->lifs_period = IEEE802154_LIFS_PERIOD *
1072 lp->hw->phy->symbol_duration;
1073 lp->hw->phy->sifs_period = IEEE802154_SIFS_PERIOD *
1074 lp->hw->phy->symbol_duration;
1076 return at86rf230_write_subreg(lp, SR_CHANNEL, channel);
1080 at86rf230_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
1082 struct at86rf230_local *lp = hw->priv;
1085 rc = lp->data->set_channel(lp, page, channel);
1087 usleep_range(lp->data->t_channel_switch,
1088 lp->data->t_channel_switch + 10);
1090 lp->cal_timeout = jiffies + AT86RF2XX_CAL_LOOP_TIMEOUT;
1095 at86rf230_set_hw_addr_filt(struct ieee802154_hw *hw,
1096 struct ieee802154_hw_addr_filt *filt,
1097 unsigned long changed)
1099 struct at86rf230_local *lp = hw->priv;
1101 if (changed & IEEE802154_AFILT_SADDR_CHANGED) {
1102 u16 addr = le16_to_cpu(filt->short_addr);
1104 dev_vdbg(&lp->spi->dev,
1105 "at86rf230_set_hw_addr_filt called for saddr\n");
1106 __at86rf230_write(lp, RG_SHORT_ADDR_0, addr);
1107 __at86rf230_write(lp, RG_SHORT_ADDR_1, addr >> 8);
1110 if (changed & IEEE802154_AFILT_PANID_CHANGED) {
1111 u16 pan = le16_to_cpu(filt->pan_id);
1113 dev_vdbg(&lp->spi->dev,
1114 "at86rf230_set_hw_addr_filt called for pan id\n");
1115 __at86rf230_write(lp, RG_PAN_ID_0, pan);
1116 __at86rf230_write(lp, RG_PAN_ID_1, pan >> 8);
1119 if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) {
1122 memcpy(addr, &filt->ieee_addr, 8);
1123 dev_vdbg(&lp->spi->dev,
1124 "at86rf230_set_hw_addr_filt called for IEEE addr\n");
1125 for (i = 0; i < 8; i++)
1126 __at86rf230_write(lp, RG_IEEE_ADDR_0 + i, addr[i]);
1129 if (changed & IEEE802154_AFILT_PANC_CHANGED) {
1130 dev_vdbg(&lp->spi->dev,
1131 "at86rf230_set_hw_addr_filt called for panc change\n");
1132 if (filt->pan_coord)
1133 at86rf230_write_subreg(lp, SR_AACK_I_AM_COORD, 1);
1135 at86rf230_write_subreg(lp, SR_AACK_I_AM_COORD, 0);
1141 #define AT86RF23X_MAX_TX_POWERS 0xF
1142 static const s32 at86rf233_powers[AT86RF23X_MAX_TX_POWERS + 1] = {
1143 400, 370, 340, 300, 250, 200, 100, 0, -100, -200, -300, -400, -600,
1147 static const s32 at86rf231_powers[AT86RF23X_MAX_TX_POWERS + 1] = {
1148 300, 280, 230, 180, 130, 70, 0, -100, -200, -300, -400, -500, -700,
1152 #define AT86RF212_MAX_TX_POWERS 0x1F
1153 static const s32 at86rf212_powers[AT86RF212_MAX_TX_POWERS + 1] = {
1154 500, 400, 300, 200, 100, 0, -100, -200, -300, -400, -500, -600, -700,
1155 -800, -900, -1000, -1100, -1200, -1300, -1400, -1500, -1600, -1700,
1156 -1800, -1900, -2000, -2100, -2200, -2300, -2400, -2500, -2600,
1160 at86rf23x_set_txpower(struct at86rf230_local *lp, s32 mbm)
1164 for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) {
1165 if (lp->hw->phy->supported.tx_powers[i] == mbm)
1166 return at86rf230_write_subreg(lp, SR_TX_PWR_23X, i);
1173 at86rf212_set_txpower(struct at86rf230_local *lp, s32 mbm)
1177 for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) {
1178 if (lp->hw->phy->supported.tx_powers[i] == mbm)
1179 return at86rf230_write_subreg(lp, SR_TX_PWR_212, i);
1186 at86rf230_set_txpower(struct ieee802154_hw *hw, s32 mbm)
1188 struct at86rf230_local *lp = hw->priv;
1190 return lp->data->set_txpower(lp, mbm);
1194 at86rf230_set_lbt(struct ieee802154_hw *hw, bool on)
1196 struct at86rf230_local *lp = hw->priv;
1198 return at86rf230_write_subreg(lp, SR_CSMA_LBT_MODE, on);
1202 at86rf230_set_cca_mode(struct ieee802154_hw *hw,
1203 const struct wpan_phy_cca *cca)
1205 struct at86rf230_local *lp = hw->priv;
1208 /* mapping 802.15.4 to driver spec */
1209 switch (cca->mode) {
1210 case NL802154_CCA_ENERGY:
1213 case NL802154_CCA_CARRIER:
1216 case NL802154_CCA_ENERGY_CARRIER:
1218 case NL802154_CCA_OPT_ENERGY_CARRIER_AND:
1221 case NL802154_CCA_OPT_ENERGY_CARRIER_OR:
1232 return at86rf230_write_subreg(lp, SR_CCA_MODE, val);
1237 at86rf230_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm)
1239 struct at86rf230_local *lp = hw->priv;
1242 for (i = 0; i < hw->phy->supported.cca_ed_levels_size; i++) {
1243 if (hw->phy->supported.cca_ed_levels[i] == mbm)
1244 return at86rf230_write_subreg(lp, SR_CCA_ED_THRES, i);
1251 at86rf230_set_csma_params(struct ieee802154_hw *hw, u8 min_be, u8 max_be,
1254 struct at86rf230_local *lp = hw->priv;
1257 rc = at86rf230_write_subreg(lp, SR_MIN_BE, min_be);
1261 rc = at86rf230_write_subreg(lp, SR_MAX_BE, max_be);
1265 return at86rf230_write_subreg(lp, SR_MAX_CSMA_RETRIES, retries);
1269 at86rf230_set_frame_retries(struct ieee802154_hw *hw, s8 retries)
1271 struct at86rf230_local *lp = hw->priv;
1273 return at86rf230_write_subreg(lp, SR_MAX_FRAME_RETRIES, retries);
1277 at86rf230_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on)
1279 struct at86rf230_local *lp = hw->priv;
1283 rc = at86rf230_write_subreg(lp, SR_AACK_DIS_ACK, 1);
1287 rc = at86rf230_write_subreg(lp, SR_AACK_PROM_MODE, 1);
1291 rc = at86rf230_write_subreg(lp, SR_AACK_PROM_MODE, 0);
1295 rc = at86rf230_write_subreg(lp, SR_AACK_DIS_ACK, 0);
1303 static const struct ieee802154_ops at86rf230_ops = {
1304 .owner = THIS_MODULE,
1305 .xmit_async = at86rf230_xmit,
1307 .set_channel = at86rf230_channel,
1308 .start = at86rf230_start,
1309 .stop = at86rf230_stop,
1310 .set_hw_addr_filt = at86rf230_set_hw_addr_filt,
1311 .set_txpower = at86rf230_set_txpower,
1312 .set_lbt = at86rf230_set_lbt,
1313 .set_cca_mode = at86rf230_set_cca_mode,
1314 .set_cca_ed_level = at86rf230_set_cca_ed_level,
1315 .set_csma_params = at86rf230_set_csma_params,
1316 .set_frame_retries = at86rf230_set_frame_retries,
1317 .set_promiscuous_mode = at86rf230_set_promiscuous_mode,
1320 static struct at86rf2xx_chip_data at86rf233_data = {
1321 .t_sleep_cycle = 330,
1322 .t_channel_switch = 11,
1323 .t_reset_to_off = 26,
1324 .t_off_to_aack = 80,
1325 .t_off_to_tx_on = 80,
1326 .t_off_to_sleep = 35,
1327 .t_sleep_to_off = 210,
1330 .rssi_base_val = -91,
1331 .set_channel = at86rf23x_set_channel,
1332 .set_txpower = at86rf23x_set_txpower,
1335 static struct at86rf2xx_chip_data at86rf231_data = {
1336 .t_sleep_cycle = 330,
1337 .t_channel_switch = 24,
1338 .t_reset_to_off = 37,
1339 .t_off_to_aack = 110,
1340 .t_off_to_tx_on = 110,
1341 .t_off_to_sleep = 35,
1342 .t_sleep_to_off = 380,
1345 .rssi_base_val = -91,
1346 .set_channel = at86rf23x_set_channel,
1347 .set_txpower = at86rf23x_set_txpower,
1350 static struct at86rf2xx_chip_data at86rf212_data = {
1351 .t_sleep_cycle = 330,
1352 .t_channel_switch = 11,
1353 .t_reset_to_off = 26,
1354 .t_off_to_aack = 200,
1355 .t_off_to_tx_on = 200,
1356 .t_off_to_sleep = 35,
1357 .t_sleep_to_off = 380,
1360 .rssi_base_val = -100,
1361 .set_channel = at86rf212_set_channel,
1362 .set_txpower = at86rf212_set_txpower,
1365 static int at86rf230_hw_init(struct at86rf230_local *lp, u8 xtal_trim)
1367 int rc, irq_type, irq_pol = IRQ_ACTIVE_HIGH;
1371 rc = at86rf230_sync_state_change(lp, STATE_FORCE_TRX_OFF);
1375 irq_type = irq_get_trigger_type(lp->spi->irq);
1376 if (irq_type == IRQ_TYPE_EDGE_RISING ||
1377 irq_type == IRQ_TYPE_EDGE_FALLING)
1378 dev_warn(&lp->spi->dev,
1379 "Using edge triggered irq's are not recommended, because it can cause races and result in a non-functional driver!\n");
1380 if (irq_type == IRQ_TYPE_EDGE_FALLING ||
1381 irq_type == IRQ_TYPE_LEVEL_LOW)
1382 irq_pol = IRQ_ACTIVE_LOW;
1384 rc = at86rf230_write_subreg(lp, SR_IRQ_POLARITY, irq_pol);
1388 rc = at86rf230_write_subreg(lp, SR_RX_SAFE_MODE, 1);
1392 rc = at86rf230_write_subreg(lp, SR_IRQ_MASK, IRQ_TRX_END);
1396 /* reset values differs in at86rf231 and at86rf233 */
1397 rc = at86rf230_write_subreg(lp, SR_IRQ_MASK_MODE, 0);
1401 get_random_bytes(csma_seed, ARRAY_SIZE(csma_seed));
1402 rc = at86rf230_write_subreg(lp, SR_CSMA_SEED_0, csma_seed[0]);
1405 rc = at86rf230_write_subreg(lp, SR_CSMA_SEED_1, csma_seed[1]);
1409 /* CLKM changes are applied immediately */
1410 rc = at86rf230_write_subreg(lp, SR_CLKM_SHA_SEL, 0x00);
1415 rc = at86rf230_write_subreg(lp, SR_CLKM_CTRL, 0x00);
1418 /* Wait the next SLEEP cycle */
1419 usleep_range(lp->data->t_sleep_cycle,
1420 lp->data->t_sleep_cycle + 100);
1422 /* xtal_trim value is calculated by:
1423 * CL = 0.5 * (CX + CTRIM + CPAR)
1426 * CL = capacitor of used crystal
1427 * CX = connected capacitors at xtal pins
1428 * CPAR = in all at86rf2xx datasheets this is a constant value 3 pF,
1429 * but this is different on each board setup. You need to fine
1430 * tuning this value via CTRIM.
1431 * CTRIM = variable capacitor setting. Resolution is 0.3 pF range is
1435 * atben transceiver:
1439 * CPAR = 3 pF (We assume the magic constant from datasheet)
1442 * (12+0.9+3)/2 = 7.95 which is nearly at 8 pF
1446 * openlabs transceiver:
1450 * CPAR = 3 pF (We assume the magic constant from datasheet)
1453 * (22+4.5+3)/2 = 14.75 which is the nearest value to 16 pF
1457 rc = at86rf230_write_subreg(lp, SR_XTAL_TRIM, xtal_trim);
1461 rc = at86rf230_read_subreg(lp, SR_DVDD_OK, &dvdd);
1465 dev_err(&lp->spi->dev, "DVDD error\n");
1469 /* Force setting slotted operation bit to 0. Sometimes the atben
1470 * sets this bit and I don't know why. We set this always force
1471 * to zero while probing.
1473 return at86rf230_write_subreg(lp, SR_SLOTTED_OPERATION, 0);
1477 at86rf230_get_pdata(struct spi_device *spi, int *rstn, int *slp_tr,
1480 struct at86rf230_platform_data *pdata = spi->dev.platform_data;
1483 if (!IS_ENABLED(CONFIG_OF) || !spi->dev.of_node) {
1487 *rstn = pdata->rstn;
1488 *slp_tr = pdata->slp_tr;
1489 *xtal_trim = pdata->xtal_trim;
1493 *rstn = of_get_named_gpio(spi->dev.of_node, "reset-gpio", 0);
1494 *slp_tr = of_get_named_gpio(spi->dev.of_node, "sleep-gpio", 0);
1495 ret = of_property_read_u8(spi->dev.of_node, "xtal-trim", xtal_trim);
1496 if (ret < 0 && ret != -EINVAL)
1503 at86rf230_detect_device(struct at86rf230_local *lp)
1505 unsigned int part, version, val;
1510 rc = __at86rf230_read(lp, RG_MAN_ID_0, &val);
1515 rc = __at86rf230_read(lp, RG_MAN_ID_1, &val);
1518 man_id |= (val << 8);
1520 rc = __at86rf230_read(lp, RG_PART_NUM, &part);
1524 rc = __at86rf230_read(lp, RG_VERSION_NUM, &version);
1528 if (man_id != 0x001f) {
1529 dev_err(&lp->spi->dev, "Non-Atmel dev found (MAN_ID %02x %02x)\n",
1530 man_id >> 8, man_id & 0xFF);
1534 lp->hw->flags = IEEE802154_HW_TX_OMIT_CKSUM |
1535 IEEE802154_HW_CSMA_PARAMS |
1536 IEEE802154_HW_FRAME_RETRIES | IEEE802154_HW_AFILT |
1537 IEEE802154_HW_PROMISCUOUS;
1539 lp->hw->phy->flags = WPAN_PHY_FLAG_TXPOWER |
1540 WPAN_PHY_FLAG_CCA_ED_LEVEL |
1541 WPAN_PHY_FLAG_CCA_MODE;
1543 lp->hw->phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) |
1544 BIT(NL802154_CCA_CARRIER) | BIT(NL802154_CCA_ENERGY_CARRIER);
1545 lp->hw->phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) |
1546 BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR);
1548 lp->hw->phy->supported.cca_ed_levels = at86rf23x_ed_levels;
1549 lp->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(at86rf23x_ed_levels);
1551 lp->hw->phy->cca.mode = NL802154_CCA_ENERGY;
1560 lp->data = &at86rf231_data;
1561 lp->hw->phy->supported.channels[0] = 0x7FFF800;
1562 lp->hw->phy->current_channel = 11;
1563 lp->hw->phy->symbol_duration = 16;
1564 lp->hw->phy->supported.tx_powers = at86rf231_powers;
1565 lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf231_powers);
1569 lp->data = &at86rf212_data;
1570 lp->hw->flags |= IEEE802154_HW_LBT;
1571 lp->hw->phy->supported.channels[0] = 0x00007FF;
1572 lp->hw->phy->supported.channels[2] = 0x00007FF;
1573 lp->hw->phy->current_channel = 5;
1574 lp->hw->phy->symbol_duration = 25;
1575 lp->hw->phy->supported.lbt = NL802154_SUPPORTED_BOOL_BOTH;
1576 lp->hw->phy->supported.tx_powers = at86rf212_powers;
1577 lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf212_powers);
1578 lp->hw->phy->supported.cca_ed_levels = at86rf212_ed_levels_100;
1579 lp->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(at86rf212_ed_levels_100);
1583 lp->data = &at86rf233_data;
1584 lp->hw->phy->supported.channels[0] = 0x7FFF800;
1585 lp->hw->phy->current_channel = 13;
1586 lp->hw->phy->symbol_duration = 16;
1587 lp->hw->phy->supported.tx_powers = at86rf233_powers;
1588 lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf233_powers);
1596 lp->hw->phy->cca_ed_level = lp->hw->phy->supported.cca_ed_levels[7];
1597 lp->hw->phy->transmit_power = lp->hw->phy->supported.tx_powers[0];
1600 dev_info(&lp->spi->dev, "Detected %s chip version %d\n", chip, version);
1606 at86rf230_setup_spi_messages(struct at86rf230_local *lp)
1609 lp->state.irq = lp->spi->irq;
1610 spi_message_init(&lp->state.msg);
1611 lp->state.msg.context = &lp->state;
1612 lp->state.trx.len = 2;
1613 lp->state.trx.tx_buf = lp->state.buf;
1614 lp->state.trx.rx_buf = lp->state.buf;
1615 spi_message_add_tail(&lp->state.trx, &lp->state.msg);
1616 hrtimer_init(&lp->state.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
1617 lp->state.timer.function = at86rf230_async_state_timer;
1620 lp->irq.irq = lp->spi->irq;
1621 spi_message_init(&lp->irq.msg);
1622 lp->irq.msg.context = &lp->irq;
1623 lp->irq.trx.len = 2;
1624 lp->irq.trx.tx_buf = lp->irq.buf;
1625 lp->irq.trx.rx_buf = lp->irq.buf;
1626 spi_message_add_tail(&lp->irq.trx, &lp->irq.msg);
1627 hrtimer_init(&lp->irq.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
1628 lp->irq.timer.function = at86rf230_async_state_timer;
1631 lp->tx.irq = lp->spi->irq;
1632 spi_message_init(&lp->tx.msg);
1633 lp->tx.msg.context = &lp->tx;
1635 lp->tx.trx.tx_buf = lp->tx.buf;
1636 lp->tx.trx.rx_buf = lp->tx.buf;
1637 spi_message_add_tail(&lp->tx.trx, &lp->tx.msg);
1638 hrtimer_init(&lp->tx.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
1639 lp->tx.timer.function = at86rf230_async_state_timer;
1642 #ifdef CONFIG_IEEE802154_AT86RF230_DEBUGFS
1643 static struct dentry *at86rf230_debugfs_root;
1645 static int at86rf230_stats_show(struct seq_file *file, void *offset)
1647 struct at86rf230_local *lp = file->private;
1649 seq_printf(file, "SUCCESS:\t\t%8llu\n", lp->trac.success);
1650 seq_printf(file, "SUCCESS_DATA_PENDING:\t%8llu\n",
1651 lp->trac.success_data_pending);
1652 seq_printf(file, "SUCCESS_WAIT_FOR_ACK:\t%8llu\n",
1653 lp->trac.success_wait_for_ack);
1654 seq_printf(file, "CHANNEL_ACCESS_FAILURE:\t%8llu\n",
1655 lp->trac.channel_access_failure);
1656 seq_printf(file, "NO_ACK:\t\t\t%8llu\n", lp->trac.no_ack);
1657 seq_printf(file, "INVALID:\t\t%8llu\n", lp->trac.invalid);
1661 static int at86rf230_stats_open(struct inode *inode, struct file *file)
1663 return single_open(file, at86rf230_stats_show, inode->i_private);
1666 static const struct file_operations at86rf230_stats_fops = {
1667 .open = at86rf230_stats_open,
1669 .llseek = seq_lseek,
1670 .release = single_release,
1673 static int at86rf230_debugfs_init(struct at86rf230_local *lp)
1675 char debugfs_dir_name[DNAME_INLINE_LEN + 1] = "at86rf230-";
1676 struct dentry *stats;
1678 strncat(debugfs_dir_name, dev_name(&lp->spi->dev), DNAME_INLINE_LEN);
1680 at86rf230_debugfs_root = debugfs_create_dir(debugfs_dir_name, NULL);
1681 if (!at86rf230_debugfs_root)
1684 stats = debugfs_create_file("trac_stats", S_IRUGO,
1685 at86rf230_debugfs_root, lp,
1686 &at86rf230_stats_fops);
1693 static void at86rf230_debugfs_remove(void)
1695 debugfs_remove_recursive(at86rf230_debugfs_root);
1698 static int at86rf230_debugfs_init(struct at86rf230_local *lp) { return 0; }
1699 static void at86rf230_debugfs_remove(void) { }
1702 static int at86rf230_probe(struct spi_device *spi)
1704 struct ieee802154_hw *hw;
1705 struct at86rf230_local *lp;
1706 unsigned int status;
1707 int rc, irq_type, rstn, slp_tr;
1711 dev_err(&spi->dev, "no IRQ specified\n");
1715 rc = at86rf230_get_pdata(spi, &rstn, &slp_tr, &xtal_trim);
1717 dev_err(&spi->dev, "failed to parse platform_data: %d\n", rc);
1721 if (gpio_is_valid(rstn)) {
1722 rc = devm_gpio_request_one(&spi->dev, rstn,
1723 GPIOF_OUT_INIT_HIGH, "rstn");
1728 if (gpio_is_valid(slp_tr)) {
1729 rc = devm_gpio_request_one(&spi->dev, slp_tr,
1730 GPIOF_OUT_INIT_LOW, "slp_tr");
1736 if (gpio_is_valid(rstn)) {
1738 gpio_set_value(rstn, 0);
1740 gpio_set_value(rstn, 1);
1741 usleep_range(120, 240);
1744 hw = ieee802154_alloc_hw(sizeof(*lp), &at86rf230_ops);
1751 lp->slp_tr = slp_tr;
1752 hw->parent = &spi->dev;
1753 ieee802154_random_extended_addr(&hw->phy->perm_extended_addr);
1755 lp->regmap = devm_regmap_init_spi(spi, &at86rf230_regmap_spi_config);
1756 if (IS_ERR(lp->regmap)) {
1757 rc = PTR_ERR(lp->regmap);
1758 dev_err(&spi->dev, "Failed to allocate register map: %d\n",
1763 at86rf230_setup_spi_messages(lp);
1765 rc = at86rf230_detect_device(lp);
1769 init_completion(&lp->state_complete);
1771 spi_set_drvdata(spi, lp);
1773 rc = at86rf230_hw_init(lp, xtal_trim);
1777 /* Read irq status register to reset irq line */
1778 rc = at86rf230_read_subreg(lp, RG_IRQ_STATUS, 0xff, 0, &status);
1782 irq_type = irq_get_trigger_type(spi->irq);
1784 irq_type = IRQF_TRIGGER_HIGH;
1786 rc = devm_request_irq(&spi->dev, spi->irq, at86rf230_isr,
1787 IRQF_SHARED | irq_type, dev_name(&spi->dev), lp);
1791 /* disable_irq by default and wait for starting hardware */
1792 disable_irq(spi->irq);
1794 /* going into sleep by default */
1795 at86rf230_sleep(lp);
1797 rc = at86rf230_debugfs_init(lp);
1801 rc = ieee802154_register_hw(lp->hw);
1808 at86rf230_debugfs_remove();
1810 ieee802154_free_hw(lp->hw);
1815 static int at86rf230_remove(struct spi_device *spi)
1817 struct at86rf230_local *lp = spi_get_drvdata(spi);
1819 /* mask all at86rf230 irq's */
1820 at86rf230_write_subreg(lp, SR_IRQ_MASK, 0);
1821 ieee802154_unregister_hw(lp->hw);
1822 ieee802154_free_hw(lp->hw);
1823 at86rf230_debugfs_remove();
1824 dev_dbg(&spi->dev, "unregistered at86rf230\n");
1829 static const struct of_device_id at86rf230_of_match[] = {
1830 { .compatible = "atmel,at86rf230", },
1831 { .compatible = "atmel,at86rf231", },
1832 { .compatible = "atmel,at86rf233", },
1833 { .compatible = "atmel,at86rf212", },
1836 MODULE_DEVICE_TABLE(of, at86rf230_of_match);
1838 static const struct spi_device_id at86rf230_device_id[] = {
1839 { .name = "at86rf230", },
1840 { .name = "at86rf231", },
1841 { .name = "at86rf233", },
1842 { .name = "at86rf212", },
1845 MODULE_DEVICE_TABLE(spi, at86rf230_device_id);
1847 static struct spi_driver at86rf230_driver = {
1848 .id_table = at86rf230_device_id,
1850 .of_match_table = of_match_ptr(at86rf230_of_match),
1851 .name = "at86rf230",
1852 .owner = THIS_MODULE,
1854 .probe = at86rf230_probe,
1855 .remove = at86rf230_remove,
1858 module_spi_driver(at86rf230_driver);
1860 MODULE_DESCRIPTION("AT86RF230 Transceiver Driver");
1861 MODULE_LICENSE("GPL v2");