// SPDX-License-Identifier: GPL-2.0-only
/*
* AT86RF230/RF231 driver
*
* Copyright (C) 2009-2012 Siemens AG
*
* Written by:
* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
* Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
* Alexander Aring <aar@pengutronix.de>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/gpio/consumer.h>
#include <linux/hrtimer.h>
#include <linux/jiffies.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/property.h>
#include <linux/spi/spi.h>
#include <linux/regmap.h>
#include <linux/skbuff.h>
#include <linux/ieee802154.h>
#include <net/mac802154.h>
#include <net/cfg802154.h>
#include "at86rf230.h"
struct at86rf230_local;
/* at86rf2xx chip depend data.
* All timings are in us.
*/
struct at86rf2xx_chip_data {
u16 t_sleep_cycle;
u16 t_channel_switch;
u16 t_reset_to_off;
u16 t_off_to_aack;
u16 t_off_to_tx_on;
u16 t_off_to_sleep;
u16 t_sleep_to_off;
u16 t_frame;
u16 t_p_ack;
int rssi_base_val;
int (*set_channel)(struct at86rf230_local *, u8, u8);
int (*set_txpower)(struct at86rf230_local *, s32);
};
#define AT86RF2XX_MAX_BUF (127 + 3)
/* tx retries to access the TX_ON state
* if it's above then force change will be started.
*
* We assume the max_frame_retries (7) value of 802.15.4 here.
*/
#define AT86RF2XX_MAX_TX_RETRIES 7
/* We use the recommended 5 minutes timeout to recalibrate */
#define AT86RF2XX_CAL_LOOP_TIMEOUT (5 * 60 * HZ)
struct at86rf230_state_change {
struct at86rf230_local *lp;
int irq;
struct hrtimer timer;
struct spi_message msg;
struct spi_transfer trx;
u8 buf[AT86RF2XX_MAX_BUF];
void (*complete)(void *context);
u8 from_state;
u8 to_state;
int trac;
bool free;
};
struct at86rf230_local {
struct spi_device *spi;
struct ieee802154_hw *hw;
struct at86rf2xx_chip_data *data;
struct regmap *regmap;
struct gpio_desc *slp_tr;
bool sleep;
struct completion state_complete;
struct at86rf230_state_change state;
unsigned long cal_timeout;
bool is_tx;
bool is_tx_from_off;
bool was_tx;
u8 tx_retry;
struct sk_buff *tx_skb;
struct at86rf230_state_change tx;
};
#define AT86RF2XX_NUMREGS 0x3F
static void
at86rf230_async_state_change(struct at86rf230_local *lp,
struct at86rf230_state_change *ctx,
const u8 state, void (*complete)(void *context));
static inline void
at86rf230_sleep(struct at86rf230_local *lp)
{
if (lp->slp_tr
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