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 unsigned long cal_timeout
;
112 struct sk_buff
*tx_skb
;
113 struct at86rf230_state_change tx
;
115 struct at86rf230_trac trac
;
118 #define AT86RF2XX_NUMREGS 0x3F
121 at86rf230_async_state_change(struct at86rf230_local
*lp
,
122 struct at86rf230_state_change
*ctx
,
123 const u8 state
, void (*complete
)(void *context
));
126 at86rf230_sleep(struct at86rf230_local
*lp
)
128 if (gpio_is_valid(lp
->slp_tr
)) {
129 gpio_set_value(lp
->slp_tr
, 1);
130 usleep_range(lp
->data
->t_off_to_sleep
,
131 lp
->data
->t_off_to_sleep
+ 10);
137 at86rf230_awake(struct at86rf230_local
*lp
)
139 if (gpio_is_valid(lp
->slp_tr
)) {
140 gpio_set_value(lp
->slp_tr
, 0);
141 usleep_range(lp
->data
->t_sleep_to_off
,
142 lp
->data
->t_sleep_to_off
+ 100);
148 __at86rf230_write(struct at86rf230_local
*lp
,
149 unsigned int addr
, unsigned int data
)
151 bool sleep
= lp
->sleep
;
154 /* awake for register setting if sleep */
158 ret
= regmap_write(lp
->regmap
, addr
, data
);
160 /* sleep again if was sleeping */
168 __at86rf230_read(struct at86rf230_local
*lp
,
169 unsigned int addr
, unsigned int *data
)
171 bool sleep
= lp
->sleep
;
174 /* awake for register setting if sleep */
178 ret
= regmap_read(lp
->regmap
, addr
, data
);
180 /* sleep again if was sleeping */
188 at86rf230_read_subreg(struct at86rf230_local
*lp
,
189 unsigned int addr
, unsigned int mask
,
190 unsigned int shift
, unsigned int *data
)
194 rc
= __at86rf230_read(lp
, addr
, data
);
196 *data
= (*data
& mask
) >> shift
;
202 at86rf230_write_subreg(struct at86rf230_local
*lp
,
203 unsigned int addr
, unsigned int mask
,
204 unsigned int shift
, unsigned int data
)
206 bool sleep
= lp
->sleep
;
209 /* awake for register setting if sleep */
213 ret
= regmap_update_bits(lp
->regmap
, addr
, mask
, data
<< shift
);
215 /* sleep again if was sleeping */
223 at86rf230_slp_tr_rising_edge(struct at86rf230_local
*lp
)
225 gpio_set_value(lp
->slp_tr
, 1);
227 gpio_set_value(lp
->slp_tr
, 0);
231 at86rf230_reg_writeable(struct device
*dev
, unsigned int reg
)
238 case RG_PHY_ED_LEVEL
:
254 case RG_SHORT_ADDR_0
:
255 case RG_SHORT_ADDR_1
:
277 at86rf230_reg_readable(struct device
*dev
, unsigned int reg
)
281 /* all writeable are also readable */
282 rc
= at86rf230_reg_writeable(dev
, reg
);
302 at86rf230_reg_volatile(struct device
*dev
, unsigned int reg
)
304 /* can be changed during runtime */
309 case RG_PHY_ED_LEVEL
:
321 at86rf230_reg_precious(struct device
*dev
, unsigned int reg
)
323 /* don't clear irq line on read */
332 static const struct regmap_config at86rf230_regmap_spi_config
= {
335 .write_flag_mask
= CMD_REG
| CMD_WRITE
,
336 .read_flag_mask
= CMD_REG
,
337 .cache_type
= REGCACHE_RBTREE
,
338 .max_register
= AT86RF2XX_NUMREGS
,
339 .writeable_reg
= at86rf230_reg_writeable
,
340 .readable_reg
= at86rf230_reg_readable
,
341 .volatile_reg
= at86rf230_reg_volatile
,
342 .precious_reg
= at86rf230_reg_precious
,
346 at86rf230_async_error_recover(void *context
)
348 struct at86rf230_state_change
*ctx
= context
;
349 struct at86rf230_local
*lp
= ctx
->lp
;
352 at86rf230_async_state_change(lp
, ctx
, STATE_RX_AACK_ON
, NULL
);
353 ieee802154_wake_queue(lp
->hw
);
359 at86rf230_async_error(struct at86rf230_local
*lp
,
360 struct at86rf230_state_change
*ctx
, int rc
)
362 dev_err(&lp
->spi
->dev
, "spi_async error %d\n", rc
);
364 at86rf230_async_state_change(lp
, ctx
, STATE_FORCE_TRX_OFF
,
365 at86rf230_async_error_recover
);
368 /* Generic function to get some register value in async mode */
370 at86rf230_async_read_reg(struct at86rf230_local
*lp
, u8 reg
,
371 struct at86rf230_state_change
*ctx
,
372 void (*complete
)(void *context
))
376 u8
*tx_buf
= ctx
->buf
;
378 tx_buf
[0] = (reg
& CMD_REG_MASK
) | CMD_REG
;
379 ctx
->msg
.complete
= complete
;
380 rc
= spi_async(lp
->spi
, &ctx
->msg
);
382 at86rf230_async_error(lp
, ctx
, rc
);
386 at86rf230_async_write_reg(struct at86rf230_local
*lp
, u8 reg
, u8 val
,
387 struct at86rf230_state_change
*ctx
,
388 void (*complete
)(void *context
))
392 ctx
->buf
[0] = (reg
& CMD_REG_MASK
) | CMD_REG
| CMD_WRITE
;
394 ctx
->msg
.complete
= complete
;
395 rc
= spi_async(lp
->spi
, &ctx
->msg
);
397 at86rf230_async_error(lp
, ctx
, rc
);
401 at86rf230_async_state_assert(void *context
)
403 struct at86rf230_state_change
*ctx
= context
;
404 struct at86rf230_local
*lp
= ctx
->lp
;
405 const u8
*buf
= ctx
->buf
;
406 const u8 trx_state
= buf
[1] & TRX_STATE_MASK
;
408 /* Assert state change */
409 if (trx_state
!= ctx
->to_state
) {
410 /* Special handling if transceiver state is in
411 * STATE_BUSY_RX_AACK and a SHR was detected.
413 if (trx_state
== STATE_BUSY_RX_AACK
) {
414 /* Undocumented race condition. If we send a state
415 * change to STATE_RX_AACK_ON the transceiver could
416 * change his state automatically to STATE_BUSY_RX_AACK
417 * if a SHR was detected. This is not an error, but we
420 if (ctx
->to_state
== STATE_RX_AACK_ON
)
423 /* If we change to STATE_TX_ON without forcing and
424 * transceiver state is STATE_BUSY_RX_AACK, we wait
425 * 'tFrame + tPAck' receiving time. In this time the
426 * PDU should be received. If the transceiver is still
427 * in STATE_BUSY_RX_AACK, we run a force state change
428 * to STATE_TX_ON. This is a timeout handling, if the
429 * transceiver stucks in STATE_BUSY_RX_AACK.
431 * Additional we do several retries to try to get into
432 * TX_ON state without forcing. If the retries are
433 * higher or equal than AT86RF2XX_MAX_TX_RETRIES we
434 * will do a force change.
436 if (ctx
->to_state
== STATE_TX_ON
||
437 ctx
->to_state
== STATE_TRX_OFF
) {
438 u8 state
= ctx
->to_state
;
440 if (lp
->tx_retry
>= AT86RF2XX_MAX_TX_RETRIES
)
441 state
= STATE_FORCE_TRX_OFF
;
444 at86rf230_async_state_change(lp
, ctx
, state
,
450 dev_warn(&lp
->spi
->dev
, "unexcept state change from 0x%02x to 0x%02x. Actual state: 0x%02x\n",
451 ctx
->from_state
, ctx
->to_state
, trx_state
);
456 ctx
->complete(context
);
459 static enum hrtimer_restart
at86rf230_async_state_timer(struct hrtimer
*timer
)
461 struct at86rf230_state_change
*ctx
=
462 container_of(timer
, struct at86rf230_state_change
, timer
);
463 struct at86rf230_local
*lp
= ctx
->lp
;
465 at86rf230_async_read_reg(lp
, RG_TRX_STATUS
, ctx
,
466 at86rf230_async_state_assert
);
468 return HRTIMER_NORESTART
;
471 /* Do state change timing delay. */
473 at86rf230_async_state_delay(void *context
)
475 struct at86rf230_state_change
*ctx
= context
;
476 struct at86rf230_local
*lp
= ctx
->lp
;
477 struct at86rf2xx_chip_data
*c
= lp
->data
;
481 /* The force state changes are will show as normal states in the
482 * state status subregister. We change the to_state to the
483 * corresponding one and remember if it was a force change, this
484 * differs if we do a state change from STATE_BUSY_RX_AACK.
486 switch (ctx
->to_state
) {
487 case STATE_FORCE_TX_ON
:
488 ctx
->to_state
= STATE_TX_ON
;
491 case STATE_FORCE_TRX_OFF
:
492 ctx
->to_state
= STATE_TRX_OFF
;
499 switch (ctx
->from_state
) {
501 switch (ctx
->to_state
) {
502 case STATE_RX_AACK_ON
:
503 tim
= ktime_set(0, c
->t_off_to_aack
* NSEC_PER_USEC
);
504 /* state change from TRX_OFF to RX_AACK_ON to do a
505 * calibration, we need to reset the timeout for the
508 lp
->cal_timeout
= jiffies
+ AT86RF2XX_CAL_LOOP_TIMEOUT
;
510 case STATE_TX_ARET_ON
:
512 tim
= ktime_set(0, c
->t_off_to_tx_on
* NSEC_PER_USEC
);
513 /* state change from TRX_OFF to TX_ON or ARET_ON to do
514 * a calibration, we need to reset the timeout for the
517 lp
->cal_timeout
= jiffies
+ AT86RF2XX_CAL_LOOP_TIMEOUT
;
523 case STATE_BUSY_RX_AACK
:
524 switch (ctx
->to_state
) {
527 /* Wait for worst case receiving time if we
528 * didn't make a force change from BUSY_RX_AACK
529 * to TX_ON or TRX_OFF.
532 tim
= ktime_set(0, (c
->t_frame
+ c
->t_p_ack
) *
541 /* Default value, means RESET state */
543 switch (ctx
->to_state
) {
545 tim
= ktime_set(0, c
->t_reset_to_off
* NSEC_PER_USEC
);
555 /* Default delay is 1us in the most cases */
557 at86rf230_async_state_timer(&ctx
->timer
);
561 hrtimer_start(&ctx
->timer
, tim
, HRTIMER_MODE_REL
);
565 at86rf230_async_state_change_start(void *context
)
567 struct at86rf230_state_change
*ctx
= context
;
568 struct at86rf230_local
*lp
= ctx
->lp
;
570 const u8 trx_state
= buf
[1] & TRX_STATE_MASK
;
572 /* Check for "possible" STATE_TRANSITION_IN_PROGRESS */
573 if (trx_state
== STATE_TRANSITION_IN_PROGRESS
) {
575 at86rf230_async_read_reg(lp
, RG_TRX_STATUS
, ctx
,
576 at86rf230_async_state_change_start
);
580 /* Check if we already are in the state which we change in */
581 if (trx_state
== ctx
->to_state
) {
583 ctx
->complete(context
);
587 /* Set current state to the context of state change */
588 ctx
->from_state
= trx_state
;
590 /* Going into the next step for a state change which do a timing
593 at86rf230_async_write_reg(lp
, RG_TRX_STATE
, ctx
->to_state
, ctx
,
594 at86rf230_async_state_delay
);
598 at86rf230_async_state_change(struct at86rf230_local
*lp
,
599 struct at86rf230_state_change
*ctx
,
600 const u8 state
, void (*complete
)(void *context
))
602 /* Initialization for the state change context */
603 ctx
->to_state
= state
;
604 ctx
->complete
= complete
;
605 at86rf230_async_read_reg(lp
, RG_TRX_STATUS
, ctx
,
606 at86rf230_async_state_change_start
);
610 at86rf230_sync_state_change_complete(void *context
)
612 struct at86rf230_state_change
*ctx
= context
;
613 struct at86rf230_local
*lp
= ctx
->lp
;
615 complete(&lp
->state_complete
);
618 /* This function do a sync framework above the async state change.
619 * Some callbacks of the IEEE 802.15.4 driver interface need to be
620 * handled synchronously.
623 at86rf230_sync_state_change(struct at86rf230_local
*lp
, unsigned int state
)
627 at86rf230_async_state_change(lp
, &lp
->state
, state
,
628 at86rf230_sync_state_change_complete
);
630 rc
= wait_for_completion_timeout(&lp
->state_complete
,
631 msecs_to_jiffies(100));
633 at86rf230_async_error(lp
, &lp
->state
, -ETIMEDOUT
);
641 at86rf230_tx_complete(void *context
)
643 struct at86rf230_state_change
*ctx
= context
;
644 struct at86rf230_local
*lp
= ctx
->lp
;
646 ieee802154_xmit_complete(lp
->hw
, lp
->tx_skb
, false);
651 at86rf230_tx_on(void *context
)
653 struct at86rf230_state_change
*ctx
= context
;
654 struct at86rf230_local
*lp
= ctx
->lp
;
656 at86rf230_async_state_change(lp
, ctx
, STATE_RX_AACK_ON
,
657 at86rf230_tx_complete
);
661 at86rf230_tx_trac_check(void *context
)
663 struct at86rf230_state_change
*ctx
= context
;
664 struct at86rf230_local
*lp
= ctx
->lp
;
666 if (IS_ENABLED(CONFIG_IEEE802154_AT86RF230_DEBUGFS
)) {
667 u8 trac
= TRAC_MASK(ctx
->buf
[1]);
673 case TRAC_SUCCESS_DATA_PENDING
:
674 lp
->trac
.success_data_pending
++;
676 case TRAC_CHANNEL_ACCESS_FAILURE
:
677 lp
->trac
.channel_access_failure
++;
686 WARN_ONCE(1, "received tx trac status %d\n", trac
);
691 at86rf230_async_state_change(lp
, ctx
, STATE_TX_ON
, at86rf230_tx_on
);
695 at86rf230_rx_read_frame_complete(void *context
)
697 struct at86rf230_state_change
*ctx
= context
;
698 struct at86rf230_local
*lp
= ctx
->lp
;
699 const u8
*buf
= ctx
->buf
;
704 if (!ieee802154_is_valid_psdu_len(len
)) {
705 dev_vdbg(&lp
->spi
->dev
, "corrupted frame received\n");
706 len
= IEEE802154_MTU
;
710 skb
= dev_alloc_skb(IEEE802154_MTU
);
712 dev_vdbg(&lp
->spi
->dev
, "failed to allocate sk_buff\n");
717 memcpy(skb_put(skb
, len
), buf
+ 2, len
);
718 ieee802154_rx_irqsafe(lp
->hw
, skb
, lqi
);
723 at86rf230_rx_trac_check(void *context
)
725 struct at86rf230_state_change
*ctx
= context
;
726 struct at86rf230_local
*lp
= ctx
->lp
;
730 if (IS_ENABLED(CONFIG_IEEE802154_AT86RF230_DEBUGFS
)) {
731 u8 trac
= TRAC_MASK(buf
[1]);
737 case TRAC_SUCCESS_WAIT_FOR_ACK
:
738 lp
->trac
.success_wait_for_ack
++;
744 WARN_ONCE(1, "received rx trac status %d\n", trac
);
750 ctx
->trx
.len
= AT86RF2XX_MAX_BUF
;
751 ctx
->msg
.complete
= at86rf230_rx_read_frame_complete
;
752 rc
= spi_async(lp
->spi
, &ctx
->msg
);
755 at86rf230_async_error(lp
, ctx
, rc
);
760 at86rf230_irq_trx_end(void *context
)
762 struct at86rf230_state_change
*ctx
= context
;
763 struct at86rf230_local
*lp
= ctx
->lp
;
767 at86rf230_async_read_reg(lp
, RG_TRX_STATE
, ctx
,
768 at86rf230_tx_trac_check
);
770 at86rf230_async_read_reg(lp
, RG_TRX_STATE
, ctx
,
771 at86rf230_rx_trac_check
);
776 at86rf230_irq_status(void *context
)
778 struct at86rf230_state_change
*ctx
= context
;
779 struct at86rf230_local
*lp
= ctx
->lp
;
780 const u8
*buf
= ctx
->buf
;
783 enable_irq(lp
->spi
->irq
);
785 if (irq
& IRQ_TRX_END
) {
786 at86rf230_irq_trx_end(ctx
);
788 dev_err(&lp
->spi
->dev
, "not supported irq %02x received\n",
795 at86rf230_setup_spi_messages(struct at86rf230_local
*lp
,
796 struct at86rf230_state_change
*state
)
799 state
->irq
= lp
->spi
->irq
;
800 spi_message_init(&state
->msg
);
801 state
->msg
.context
= state
;
803 state
->trx
.tx_buf
= state
->buf
;
804 state
->trx
.rx_buf
= state
->buf
;
805 spi_message_add_tail(&state
->trx
, &state
->msg
);
806 hrtimer_init(&state
->timer
, CLOCK_MONOTONIC
, HRTIMER_MODE_REL
);
807 state
->timer
.function
= at86rf230_async_state_timer
;
810 static irqreturn_t
at86rf230_isr(int irq
, void *data
)
812 struct at86rf230_local
*lp
= data
;
813 struct at86rf230_state_change
*ctx
;
816 disable_irq_nosync(irq
);
818 ctx
= kzalloc(sizeof(*ctx
), GFP_ATOMIC
);
824 at86rf230_setup_spi_messages(lp
, ctx
);
825 /* tell on error handling to free ctx */
828 ctx
->buf
[0] = (RG_IRQ_STATUS
& CMD_REG_MASK
) | CMD_REG
;
829 ctx
->msg
.complete
= at86rf230_irq_status
;
830 rc
= spi_async(lp
->spi
, &ctx
->msg
);
832 at86rf230_async_error(lp
, ctx
, rc
);
841 at86rf230_write_frame_complete(void *context
)
843 struct at86rf230_state_change
*ctx
= context
;
844 struct at86rf230_local
*lp
= ctx
->lp
;
848 if (gpio_is_valid(lp
->slp_tr
))
849 at86rf230_slp_tr_rising_edge(lp
);
851 at86rf230_async_write_reg(lp
, RG_TRX_STATE
, STATE_BUSY_TX
, ctx
,
856 at86rf230_write_frame(void *context
)
858 struct at86rf230_state_change
*ctx
= context
;
859 struct at86rf230_local
*lp
= ctx
->lp
;
860 struct sk_buff
*skb
= lp
->tx_skb
;
866 buf
[0] = CMD_FB
| CMD_WRITE
;
867 buf
[1] = skb
->len
+ 2;
868 memcpy(buf
+ 2, skb
->data
, skb
->len
);
869 ctx
->trx
.len
= skb
->len
+ 2;
870 ctx
->msg
.complete
= at86rf230_write_frame_complete
;
871 rc
= spi_async(lp
->spi
, &ctx
->msg
);
874 at86rf230_async_error(lp
, ctx
, rc
);
879 at86rf230_xmit_tx_on(void *context
)
881 struct at86rf230_state_change
*ctx
= context
;
882 struct at86rf230_local
*lp
= ctx
->lp
;
884 at86rf230_async_state_change(lp
, ctx
, STATE_TX_ARET_ON
,
885 at86rf230_write_frame
);
889 at86rf230_xmit_start(void *context
)
891 struct at86rf230_state_change
*ctx
= context
;
892 struct at86rf230_local
*lp
= ctx
->lp
;
894 /* check if we change from off state */
895 if (lp
->is_tx_from_off
) {
896 lp
->is_tx_from_off
= false;
897 at86rf230_async_state_change(lp
, ctx
, STATE_TX_ARET_ON
,
898 at86rf230_write_frame
);
900 at86rf230_async_state_change(lp
, ctx
, STATE_TX_ON
,
901 at86rf230_xmit_tx_on
);
906 at86rf230_xmit(struct ieee802154_hw
*hw
, struct sk_buff
*skb
)
908 struct at86rf230_local
*lp
= hw
->priv
;
909 struct at86rf230_state_change
*ctx
= &lp
->tx
;
914 /* After 5 minutes in PLL and the same frequency we run again the
915 * calibration loops which is recommended by at86rf2xx datasheets.
917 * The calibration is initiate by a state change from TRX_OFF
918 * to TX_ON, the lp->cal_timeout should be reinit by state_delay
919 * function then to start in the next 5 minutes.
921 if (time_is_before_jiffies(lp
->cal_timeout
)) {
922 lp
->is_tx_from_off
= true;
923 at86rf230_async_state_change(lp
, ctx
, STATE_TRX_OFF
,
924 at86rf230_xmit_start
);
926 at86rf230_xmit_start(ctx
);
933 at86rf230_ed(struct ieee802154_hw
*hw
, u8
*level
)
941 at86rf230_start(struct ieee802154_hw
*hw
)
943 struct at86rf230_local
*lp
= hw
->priv
;
945 /* reset trac stats on start */
946 if (IS_ENABLED(CONFIG_IEEE802154_AT86RF230_DEBUGFS
))
947 memset(&lp
->trac
, 0, sizeof(struct at86rf230_trac
));
950 enable_irq(lp
->spi
->irq
);
952 return at86rf230_sync_state_change(lp
, STATE_RX_AACK_ON
);
956 at86rf230_stop(struct ieee802154_hw
*hw
)
958 struct at86rf230_local
*lp
= hw
->priv
;
961 at86rf230_sync_state_change(lp
, STATE_FORCE_TRX_OFF
);
963 disable_irq(lp
->spi
->irq
);
965 /* It's recommended to set random new csma_seeds before sleep state.
966 * Makes only sense in the stop callback, not doing this inside of
967 * at86rf230_sleep, this is also used when we don't transmit afterwards
968 * when calling start callback again.
970 get_random_bytes(csma_seed
, ARRAY_SIZE(csma_seed
));
971 at86rf230_write_subreg(lp
, SR_CSMA_SEED_0
, csma_seed
[0]);
972 at86rf230_write_subreg(lp
, SR_CSMA_SEED_1
, csma_seed
[1]);
978 at86rf23x_set_channel(struct at86rf230_local
*lp
, u8 page
, u8 channel
)
980 return at86rf230_write_subreg(lp
, SR_CHANNEL
, channel
);
983 #define AT86RF2XX_MAX_ED_LEVELS 0xF
984 static const s32 at86rf23x_ed_levels
[AT86RF2XX_MAX_ED_LEVELS
+ 1] = {
985 -9100, -8900, -8700, -8500, -8300, -8100, -7900, -7700, -7500, -7300,
986 -7100, -6900, -6700, -6500, -6300, -6100,
989 static const s32 at86rf212_ed_levels_100
[AT86RF2XX_MAX_ED_LEVELS
+ 1] = {
990 -10000, -9800, -9600, -9400, -9200, -9000, -8800, -8600, -8400, -8200,
991 -8000, -7800, -7600, -7400, -7200, -7000,
994 static const s32 at86rf212_ed_levels_98
[AT86RF2XX_MAX_ED_LEVELS
+ 1] = {
995 -9800, -9600, -9400, -9200, -9000, -8800, -8600, -8400, -8200, -8000,
996 -7800, -7600, -7400, -7200, -7000, -6800,
1000 at86rf212_update_cca_ed_level(struct at86rf230_local
*lp
, int rssi_base_val
)
1002 unsigned int cca_ed_thres
;
1005 rc
= at86rf230_read_subreg(lp
, SR_CCA_ED_THRES
, &cca_ed_thres
);
1009 switch (rssi_base_val
) {
1011 lp
->hw
->phy
->supported
.cca_ed_levels
= at86rf212_ed_levels_98
;
1012 lp
->hw
->phy
->supported
.cca_ed_levels_size
= ARRAY_SIZE(at86rf212_ed_levels_98
);
1013 lp
->hw
->phy
->cca_ed_level
= at86rf212_ed_levels_98
[cca_ed_thres
];
1016 lp
->hw
->phy
->supported
.cca_ed_levels
= at86rf212_ed_levels_100
;
1017 lp
->hw
->phy
->supported
.cca_ed_levels_size
= ARRAY_SIZE(at86rf212_ed_levels_100
);
1018 lp
->hw
->phy
->cca_ed_level
= at86rf212_ed_levels_100
[cca_ed_thres
];
1028 at86rf212_set_channel(struct at86rf230_local
*lp
, u8 page
, u8 channel
)
1033 rc
= at86rf230_write_subreg(lp
, SR_SUB_MODE
, 0);
1035 rc
= at86rf230_write_subreg(lp
, SR_SUB_MODE
, 1);
1040 rc
= at86rf230_write_subreg(lp
, SR_BPSK_QPSK
, 0);
1041 lp
->data
->rssi_base_val
= -100;
1043 rc
= at86rf230_write_subreg(lp
, SR_BPSK_QPSK
, 1);
1044 lp
->data
->rssi_base_val
= -98;
1049 rc
= at86rf212_update_cca_ed_level(lp
, lp
->data
->rssi_base_val
);
1053 /* This sets the symbol_duration according frequency on the 212.
1054 * TODO move this handling while set channel and page in cfg802154.
1055 * We can do that, this timings are according 802.15.4 standard.
1056 * If we do that in cfg802154, this is a more generic calculation.
1058 * This should also protected from ifs_timer. Means cancel timer and
1059 * init with a new value. For now, this is okay.
1063 /* SUB:0 and BPSK:0 -> BPSK-20 */
1064 lp
->hw
->phy
->symbol_duration
= 50;
1066 /* SUB:1 and BPSK:0 -> BPSK-40 */
1067 lp
->hw
->phy
->symbol_duration
= 25;
1071 /* SUB:0 and BPSK:1 -> OQPSK-100/200/400 */
1072 lp
->hw
->phy
->symbol_duration
= 40;
1074 /* SUB:1 and BPSK:1 -> OQPSK-250/500/1000 */
1075 lp
->hw
->phy
->symbol_duration
= 16;
1078 lp
->hw
->phy
->lifs_period
= IEEE802154_LIFS_PERIOD
*
1079 lp
->hw
->phy
->symbol_duration
;
1080 lp
->hw
->phy
->sifs_period
= IEEE802154_SIFS_PERIOD
*
1081 lp
->hw
->phy
->symbol_duration
;
1083 return at86rf230_write_subreg(lp
, SR_CHANNEL
, channel
);
1087 at86rf230_channel(struct ieee802154_hw
*hw
, u8 page
, u8 channel
)
1089 struct at86rf230_local
*lp
= hw
->priv
;
1092 rc
= lp
->data
->set_channel(lp
, page
, channel
);
1094 usleep_range(lp
->data
->t_channel_switch
,
1095 lp
->data
->t_channel_switch
+ 10);
1097 lp
->cal_timeout
= jiffies
+ AT86RF2XX_CAL_LOOP_TIMEOUT
;
1102 at86rf230_set_hw_addr_filt(struct ieee802154_hw
*hw
,
1103 struct ieee802154_hw_addr_filt
*filt
,
1104 unsigned long changed
)
1106 struct at86rf230_local
*lp
= hw
->priv
;
1108 if (changed
& IEEE802154_AFILT_SADDR_CHANGED
) {
1109 u16 addr
= le16_to_cpu(filt
->short_addr
);
1111 dev_vdbg(&lp
->spi
->dev
,
1112 "at86rf230_set_hw_addr_filt called for saddr\n");
1113 __at86rf230_write(lp
, RG_SHORT_ADDR_0
, addr
);
1114 __at86rf230_write(lp
, RG_SHORT_ADDR_1
, addr
>> 8);
1117 if (changed
& IEEE802154_AFILT_PANID_CHANGED
) {
1118 u16 pan
= le16_to_cpu(filt
->pan_id
);
1120 dev_vdbg(&lp
->spi
->dev
,
1121 "at86rf230_set_hw_addr_filt called for pan id\n");
1122 __at86rf230_write(lp
, RG_PAN_ID_0
, pan
);
1123 __at86rf230_write(lp
, RG_PAN_ID_1
, pan
>> 8);
1126 if (changed
& IEEE802154_AFILT_IEEEADDR_CHANGED
) {
1129 memcpy(addr
, &filt
->ieee_addr
, 8);
1130 dev_vdbg(&lp
->spi
->dev
,
1131 "at86rf230_set_hw_addr_filt called for IEEE addr\n");
1132 for (i
= 0; i
< 8; i
++)
1133 __at86rf230_write(lp
, RG_IEEE_ADDR_0
+ i
, addr
[i
]);
1136 if (changed
& IEEE802154_AFILT_PANC_CHANGED
) {
1137 dev_vdbg(&lp
->spi
->dev
,
1138 "at86rf230_set_hw_addr_filt called for panc change\n");
1139 if (filt
->pan_coord
)
1140 at86rf230_write_subreg(lp
, SR_AACK_I_AM_COORD
, 1);
1142 at86rf230_write_subreg(lp
, SR_AACK_I_AM_COORD
, 0);
1148 #define AT86RF23X_MAX_TX_POWERS 0xF
1149 static const s32 at86rf233_powers
[AT86RF23X_MAX_TX_POWERS
+ 1] = {
1150 400, 370, 340, 300, 250, 200, 100, 0, -100, -200, -300, -400, -600,
1154 static const s32 at86rf231_powers
[AT86RF23X_MAX_TX_POWERS
+ 1] = {
1155 300, 280, 230, 180, 130, 70, 0, -100, -200, -300, -400, -500, -700,
1159 #define AT86RF212_MAX_TX_POWERS 0x1F
1160 static const s32 at86rf212_powers
[AT86RF212_MAX_TX_POWERS
+ 1] = {
1161 500, 400, 300, 200, 100, 0, -100, -200, -300, -400, -500, -600, -700,
1162 -800, -900, -1000, -1100, -1200, -1300, -1400, -1500, -1600, -1700,
1163 -1800, -1900, -2000, -2100, -2200, -2300, -2400, -2500, -2600,
1167 at86rf23x_set_txpower(struct at86rf230_local
*lp
, s32 mbm
)
1171 for (i
= 0; i
< lp
->hw
->phy
->supported
.tx_powers_size
; i
++) {
1172 if (lp
->hw
->phy
->supported
.tx_powers
[i
] == mbm
)
1173 return at86rf230_write_subreg(lp
, SR_TX_PWR_23X
, i
);
1180 at86rf212_set_txpower(struct at86rf230_local
*lp
, s32 mbm
)
1184 for (i
= 0; i
< lp
->hw
->phy
->supported
.tx_powers_size
; i
++) {
1185 if (lp
->hw
->phy
->supported
.tx_powers
[i
] == mbm
)
1186 return at86rf230_write_subreg(lp
, SR_TX_PWR_212
, i
);
1193 at86rf230_set_txpower(struct ieee802154_hw
*hw
, s32 mbm
)
1195 struct at86rf230_local
*lp
= hw
->priv
;
1197 return lp
->data
->set_txpower(lp
, mbm
);
1201 at86rf230_set_lbt(struct ieee802154_hw
*hw
, bool on
)
1203 struct at86rf230_local
*lp
= hw
->priv
;
1205 return at86rf230_write_subreg(lp
, SR_CSMA_LBT_MODE
, on
);
1209 at86rf230_set_cca_mode(struct ieee802154_hw
*hw
,
1210 const struct wpan_phy_cca
*cca
)
1212 struct at86rf230_local
*lp
= hw
->priv
;
1215 /* mapping 802.15.4 to driver spec */
1216 switch (cca
->mode
) {
1217 case NL802154_CCA_ENERGY
:
1220 case NL802154_CCA_CARRIER
:
1223 case NL802154_CCA_ENERGY_CARRIER
:
1225 case NL802154_CCA_OPT_ENERGY_CARRIER_AND
:
1228 case NL802154_CCA_OPT_ENERGY_CARRIER_OR
:
1239 return at86rf230_write_subreg(lp
, SR_CCA_MODE
, val
);
1244 at86rf230_set_cca_ed_level(struct ieee802154_hw
*hw
, s32 mbm
)
1246 struct at86rf230_local
*lp
= hw
->priv
;
1249 for (i
= 0; i
< hw
->phy
->supported
.cca_ed_levels_size
; i
++) {
1250 if (hw
->phy
->supported
.cca_ed_levels
[i
] == mbm
)
1251 return at86rf230_write_subreg(lp
, SR_CCA_ED_THRES
, i
);
1258 at86rf230_set_csma_params(struct ieee802154_hw
*hw
, u8 min_be
, u8 max_be
,
1261 struct at86rf230_local
*lp
= hw
->priv
;
1264 rc
= at86rf230_write_subreg(lp
, SR_MIN_BE
, min_be
);
1268 rc
= at86rf230_write_subreg(lp
, SR_MAX_BE
, max_be
);
1272 return at86rf230_write_subreg(lp
, SR_MAX_CSMA_RETRIES
, retries
);
1276 at86rf230_set_frame_retries(struct ieee802154_hw
*hw
, s8 retries
)
1278 struct at86rf230_local
*lp
= hw
->priv
;
1280 return at86rf230_write_subreg(lp
, SR_MAX_FRAME_RETRIES
, retries
);
1284 at86rf230_set_promiscuous_mode(struct ieee802154_hw
*hw
, const bool on
)
1286 struct at86rf230_local
*lp
= hw
->priv
;
1290 rc
= at86rf230_write_subreg(lp
, SR_AACK_DIS_ACK
, 1);
1294 rc
= at86rf230_write_subreg(lp
, SR_AACK_PROM_MODE
, 1);
1298 rc
= at86rf230_write_subreg(lp
, SR_AACK_PROM_MODE
, 0);
1302 rc
= at86rf230_write_subreg(lp
, SR_AACK_DIS_ACK
, 0);
1310 static const struct ieee802154_ops at86rf230_ops
= {
1311 .owner
= THIS_MODULE
,
1312 .xmit_async
= at86rf230_xmit
,
1314 .set_channel
= at86rf230_channel
,
1315 .start
= at86rf230_start
,
1316 .stop
= at86rf230_stop
,
1317 .set_hw_addr_filt
= at86rf230_set_hw_addr_filt
,
1318 .set_txpower
= at86rf230_set_txpower
,
1319 .set_lbt
= at86rf230_set_lbt
,
1320 .set_cca_mode
= at86rf230_set_cca_mode
,
1321 .set_cca_ed_level
= at86rf230_set_cca_ed_level
,
1322 .set_csma_params
= at86rf230_set_csma_params
,
1323 .set_frame_retries
= at86rf230_set_frame_retries
,
1324 .set_promiscuous_mode
= at86rf230_set_promiscuous_mode
,
1327 static struct at86rf2xx_chip_data at86rf233_data
= {
1328 .t_sleep_cycle
= 330,
1329 .t_channel_switch
= 11,
1330 .t_reset_to_off
= 26,
1331 .t_off_to_aack
= 80,
1332 .t_off_to_tx_on
= 80,
1333 .t_off_to_sleep
= 35,
1334 .t_sleep_to_off
= 210,
1337 .rssi_base_val
= -91,
1338 .set_channel
= at86rf23x_set_channel
,
1339 .set_txpower
= at86rf23x_set_txpower
,
1342 static struct at86rf2xx_chip_data at86rf231_data
= {
1343 .t_sleep_cycle
= 330,
1344 .t_channel_switch
= 24,
1345 .t_reset_to_off
= 37,
1346 .t_off_to_aack
= 110,
1347 .t_off_to_tx_on
= 110,
1348 .t_off_to_sleep
= 35,
1349 .t_sleep_to_off
= 380,
1352 .rssi_base_val
= -91,
1353 .set_channel
= at86rf23x_set_channel
,
1354 .set_txpower
= at86rf23x_set_txpower
,
1357 static struct at86rf2xx_chip_data at86rf212_data
= {
1358 .t_sleep_cycle
= 330,
1359 .t_channel_switch
= 11,
1360 .t_reset_to_off
= 26,
1361 .t_off_to_aack
= 200,
1362 .t_off_to_tx_on
= 200,
1363 .t_off_to_sleep
= 35,
1364 .t_sleep_to_off
= 380,
1367 .rssi_base_val
= -100,
1368 .set_channel
= at86rf212_set_channel
,
1369 .set_txpower
= at86rf212_set_txpower
,
1372 static int at86rf230_hw_init(struct at86rf230_local
*lp
, u8 xtal_trim
)
1374 int rc
, irq_type
, irq_pol
= IRQ_ACTIVE_HIGH
;
1378 rc
= at86rf230_sync_state_change(lp
, STATE_FORCE_TRX_OFF
);
1382 irq_type
= irq_get_trigger_type(lp
->spi
->irq
);
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
);
1608 #ifdef CONFIG_IEEE802154_AT86RF230_DEBUGFS
1609 static struct dentry
*at86rf230_debugfs_root
;
1611 static int at86rf230_stats_show(struct seq_file
*file
, void *offset
)
1613 struct at86rf230_local
*lp
= file
->private;
1615 seq_printf(file
, "SUCCESS:\t\t%8llu\n", lp
->trac
.success
);
1616 seq_printf(file
, "SUCCESS_DATA_PENDING:\t%8llu\n",
1617 lp
->trac
.success_data_pending
);
1618 seq_printf(file
, "SUCCESS_WAIT_FOR_ACK:\t%8llu\n",
1619 lp
->trac
.success_wait_for_ack
);
1620 seq_printf(file
, "CHANNEL_ACCESS_FAILURE:\t%8llu\n",
1621 lp
->trac
.channel_access_failure
);
1622 seq_printf(file
, "NO_ACK:\t\t\t%8llu\n", lp
->trac
.no_ack
);
1623 seq_printf(file
, "INVALID:\t\t%8llu\n", lp
->trac
.invalid
);
1627 static int at86rf230_stats_open(struct inode
*inode
, struct file
*file
)
1629 return single_open(file
, at86rf230_stats_show
, inode
->i_private
);
1632 static const struct file_operations at86rf230_stats_fops
= {
1633 .open
= at86rf230_stats_open
,
1635 .llseek
= seq_lseek
,
1636 .release
= single_release
,
1639 static int at86rf230_debugfs_init(struct at86rf230_local
*lp
)
1641 char debugfs_dir_name
[DNAME_INLINE_LEN
+ 1] = "at86rf230-";
1642 struct dentry
*stats
;
1644 strncat(debugfs_dir_name
, dev_name(&lp
->spi
->dev
), DNAME_INLINE_LEN
);
1646 at86rf230_debugfs_root
= debugfs_create_dir(debugfs_dir_name
, NULL
);
1647 if (!at86rf230_debugfs_root
)
1650 stats
= debugfs_create_file("trac_stats", S_IRUGO
,
1651 at86rf230_debugfs_root
, lp
,
1652 &at86rf230_stats_fops
);
1659 static void at86rf230_debugfs_remove(void)
1661 debugfs_remove_recursive(at86rf230_debugfs_root
);
1664 static int at86rf230_debugfs_init(struct at86rf230_local
*lp
) { return 0; }
1665 static void at86rf230_debugfs_remove(void) { }
1668 static int at86rf230_probe(struct spi_device
*spi
)
1670 struct ieee802154_hw
*hw
;
1671 struct at86rf230_local
*lp
;
1672 unsigned int status
;
1673 int rc
, irq_type
, rstn
, slp_tr
;
1677 dev_err(&spi
->dev
, "no IRQ specified\n");
1681 rc
= at86rf230_get_pdata(spi
, &rstn
, &slp_tr
, &xtal_trim
);
1683 dev_err(&spi
->dev
, "failed to parse platform_data: %d\n", rc
);
1687 if (gpio_is_valid(rstn
)) {
1688 rc
= devm_gpio_request_one(&spi
->dev
, rstn
,
1689 GPIOF_OUT_INIT_HIGH
, "rstn");
1694 if (gpio_is_valid(slp_tr
)) {
1695 rc
= devm_gpio_request_one(&spi
->dev
, slp_tr
,
1696 GPIOF_OUT_INIT_LOW
, "slp_tr");
1702 if (gpio_is_valid(rstn
)) {
1704 gpio_set_value(rstn
, 0);
1706 gpio_set_value(rstn
, 1);
1707 usleep_range(120, 240);
1710 hw
= ieee802154_alloc_hw(sizeof(*lp
), &at86rf230_ops
);
1717 lp
->slp_tr
= slp_tr
;
1718 hw
->parent
= &spi
->dev
;
1719 ieee802154_random_extended_addr(&hw
->phy
->perm_extended_addr
);
1721 lp
->regmap
= devm_regmap_init_spi(spi
, &at86rf230_regmap_spi_config
);
1722 if (IS_ERR(lp
->regmap
)) {
1723 rc
= PTR_ERR(lp
->regmap
);
1724 dev_err(&spi
->dev
, "Failed to allocate register map: %d\n",
1729 at86rf230_setup_spi_messages(lp
, &lp
->state
);
1730 at86rf230_setup_spi_messages(lp
, &lp
->tx
);
1732 rc
= at86rf230_detect_device(lp
);
1736 init_completion(&lp
->state_complete
);
1738 spi_set_drvdata(spi
, lp
);
1740 rc
= at86rf230_hw_init(lp
, xtal_trim
);
1744 /* Read irq status register to reset irq line */
1745 rc
= at86rf230_read_subreg(lp
, RG_IRQ_STATUS
, 0xff, 0, &status
);
1749 irq_type
= irq_get_trigger_type(spi
->irq
);
1751 irq_type
= IRQF_TRIGGER_HIGH
;
1753 rc
= devm_request_irq(&spi
->dev
, spi
->irq
, at86rf230_isr
,
1754 IRQF_SHARED
| irq_type
, dev_name(&spi
->dev
), lp
);
1758 /* disable_irq by default and wait for starting hardware */
1759 disable_irq(spi
->irq
);
1761 /* going into sleep by default */
1762 at86rf230_sleep(lp
);
1764 rc
= at86rf230_debugfs_init(lp
);
1768 rc
= ieee802154_register_hw(lp
->hw
);
1775 at86rf230_debugfs_remove();
1777 ieee802154_free_hw(lp
->hw
);
1782 static int at86rf230_remove(struct spi_device
*spi
)
1784 struct at86rf230_local
*lp
= spi_get_drvdata(spi
);
1786 /* mask all at86rf230 irq's */
1787 at86rf230_write_subreg(lp
, SR_IRQ_MASK
, 0);
1788 ieee802154_unregister_hw(lp
->hw
);
1789 ieee802154_free_hw(lp
->hw
);
1790 at86rf230_debugfs_remove();
1791 dev_dbg(&spi
->dev
, "unregistered at86rf230\n");
1796 static const struct of_device_id at86rf230_of_match
[] = {
1797 { .compatible
= "atmel,at86rf230", },
1798 { .compatible
= "atmel,at86rf231", },
1799 { .compatible
= "atmel,at86rf233", },
1800 { .compatible
= "atmel,at86rf212", },
1803 MODULE_DEVICE_TABLE(of
, at86rf230_of_match
);
1805 static const struct spi_device_id at86rf230_device_id
[] = {
1806 { .name
= "at86rf230", },
1807 { .name
= "at86rf231", },
1808 { .name
= "at86rf233", },
1809 { .name
= "at86rf212", },
1812 MODULE_DEVICE_TABLE(spi
, at86rf230_device_id
);
1814 static struct spi_driver at86rf230_driver
= {
1815 .id_table
= at86rf230_device_id
,
1817 .of_match_table
= of_match_ptr(at86rf230_of_match
),
1818 .name
= "at86rf230",
1820 .probe
= at86rf230_probe
,
1821 .remove
= at86rf230_remove
,
1824 module_spi_driver(at86rf230_driver
);
1826 MODULE_DESCRIPTION("AT86RF230 Transceiver Driver");
1827 MODULE_LICENSE("GPL v2");