diff options
Diffstat (limited to 'drivers/net/ieee802154/at86rf230.c')
| -rw-r--r-- | drivers/net/ieee802154/at86rf230.c | 39 |
1 files changed, 29 insertions, 10 deletions
diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c index edf575c88345..4030fa69f176 100644 --- a/drivers/net/ieee802154/at86rf230.c +++ b/drivers/net/ieee802154/at86rf230.c @@ -19,6 +19,7 @@ */ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/hrtimer.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/gpio.h> @@ -64,6 +65,7 @@ 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]; @@ -548,6 +550,19 @@ done: ctx->complete(context); } +static enum hrtimer_restart at86rf230_async_state_timer(struct hrtimer *timer) +{ + struct at86rf230_state_change *ctx = + container_of(timer, struct at86rf230_state_change, timer); + struct at86rf230_local *lp = ctx->lp; + + at86rf230_async_read_reg(lp, RG_TRX_STATUS, ctx, + at86rf230_async_state_assert, + ctx->irq_enable); + + return HRTIMER_NORESTART; +} + /* Do state change timing delay. */ static void at86rf230_async_state_delay(void *context) @@ -556,6 +571,7 @@ at86rf230_async_state_delay(void *context) struct at86rf230_local *lp = ctx->lp; struct at86rf2xx_chip_data *c = lp->data; bool force = false; + ktime_t tim; /* The force state changes are will show as normal states in the * state status subregister. We change the to_state to the @@ -579,11 +595,10 @@ at86rf230_async_state_delay(void *context) case STATE_TRX_OFF: switch (ctx->to_state) { case STATE_RX_AACK_ON: - usleep_range(c->t_off_to_aack, c->t_off_to_aack + 10); + tim = ktime_set(0, c->t_off_to_aack * NSEC_PER_USEC); goto change; case STATE_TX_ON: - usleep_range(c->t_off_to_tx_on, - c->t_off_to_tx_on + 10); + tim = ktime_set(0, c->t_off_to_tx_on * NSEC_PER_USEC); goto change; default: break; @@ -597,8 +612,8 @@ at86rf230_async_state_delay(void *context) * to TX_ON. */ if (!force) { - usleep_range(c->t_frame + c->t_p_ack, - c->t_frame + c->t_p_ack + 1000); + tim = ktime_set(0, (c->t_frame + c->t_p_ack) * + NSEC_PER_USEC); goto change; } break; @@ -610,7 +625,7 @@ at86rf230_async_state_delay(void *context) case STATE_P_ON: switch (ctx->to_state) { case STATE_TRX_OFF: - usleep_range(c->t_reset_to_off, c->t_reset_to_off + 10); + tim = ktime_set(0, c->t_reset_to_off * NSEC_PER_USEC); goto change; default: break; @@ -621,12 +636,10 @@ at86rf230_async_state_delay(void *context) } /* Default delay is 1us in the most cases */ - udelay(1); + tim = ktime_set(0, NSEC_PER_USEC); change: - at86rf230_async_read_reg(lp, RG_TRX_STATUS, ctx, - at86rf230_async_state_assert, - ctx->irq_enable); + hrtimer_start(&ctx->timer, tim, HRTIMER_MODE_REL); } static void @@ -1546,6 +1559,8 @@ at86rf230_setup_spi_messages(struct at86rf230_local *lp) lp->state.trx.tx_buf = lp->state.buf; lp->state.trx.rx_buf = lp->state.buf; spi_message_add_tail(&lp->state.trx, &lp->state.msg); + hrtimer_init(&lp->state.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + lp->state.timer.function = at86rf230_async_state_timer; lp->irq.lp = lp; lp->irq.irq = lp->spi->irq; @@ -1555,6 +1570,8 @@ at86rf230_setup_spi_messages(struct at86rf230_local *lp) lp->irq.trx.tx_buf = lp->irq.buf; lp->irq.trx.rx_buf = lp->irq.buf; spi_message_add_tail(&lp->irq.trx, &lp->irq.msg); + hrtimer_init(&lp->irq.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + lp->irq.timer.function = at86rf230_async_state_timer; lp->tx.lp = lp; lp->tx.irq = lp->spi->irq; @@ -1564,6 +1581,8 @@ at86rf230_setup_spi_messages(struct at86rf230_local *lp) lp->tx.trx.tx_buf = lp->tx.buf; lp->tx.trx.rx_buf = lp->tx.buf; spi_message_add_tail(&lp->tx.trx, &lp->tx.msg); + hrtimer_init(&lp->tx.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + lp->tx.timer.function = at86rf230_async_state_timer; } static int at86rf230_probe(struct spi_device *spi) |