2  * Copyright (c) 2017 - 2018, Nordic Semiconductor ASA
4  * SPDX-License-Identifier: Apache-2.0
102 	struct spi_nrfx_data *dev_data = dev->data;  in request_clock()
103 	const struct spi_nrfx_config *dev_config = dev->config;  in request_clock()
106 	if (!dev_config->clk_dev) {  in request_clock()
111 			dev_config->clk_dev, &dev_config->clk_spec,  in request_clock()
118 	dev_data->clock_requested = true;  in request_clock()
129 	struct spi_nrfx_data *dev_data = dev->data;  in release_clock()
130 	const struct spi_nrfx_config *dev_config = dev->config;  in release_clock()
132 	if (!dev_data->clock_requested) {  in release_clock()
136 	dev_data->clock_requested = false;  in release_clock()
138 	nrf_clock_control_release(dev_config->clk_dev, &dev_config->clk_spec);  in release_clock()
146 	struct spi_nrfx_data *dev_data = dev->data;  in finalize_spi_transaction()
147 	const struct spi_nrfx_config *dev_config = dev->config;  in finalize_spi_transaction()
148 	void *reg = dev_config->spim.p_reg;  in finalize_spi_transaction()
151 		spi_context_cs_control(&dev_data->ctx, false);  in finalize_spi_transaction()
154 	if (NRF_SPIM_IS_320MHZ_SPIM(reg) && !(dev_data->ctx.config->operation & SPI_HOLD_ON_CS)) {  in finalize_spi_transaction()
219 	struct spi_nrfx_data *dev_data = dev->data;  in configure()
220 	const struct spi_nrfx_config *dev_config = dev->config;  in configure()
221 	struct spi_context *ctx = &dev_data->ctx;  in configure()
222 	uint32_t max_freq = dev_config->max_freq;  in configure()
227 	if (dev_data->initialized && spi_context_configured(ctx, spi_cfg)) {  in configure()
232 	if (spi_cfg->operation & SPI_HALF_DUPLEX) {  in configure()
233 		LOG_ERR("Half-duplex not supported");  in configure()
234 		return -ENOTSUP;  in configure()
237 	if (SPI_OP_MODE_GET(spi_cfg->operation) != SPI_OP_MODE_MASTER) {  in configure()
238 		LOG_ERR("Slave mode is not supported on %s", dev->name);  in configure()
239 		return -EINVAL;  in configure()
242 	if (spi_cfg->operation & SPI_MODE_LOOP) {  in configure()
244 		return -EINVAL;  in configure()
248 	    (spi_cfg->operation & SPI_LINES_MASK) != SPI_LINES_SINGLE) {  in configure()
250 		return -EINVAL;  in configure()
253 	if (SPI_WORD_SIZE_GET(spi_cfg->operation) != 8) {  in configure()
255 		return -EINVAL;  in configure()
258 	if (spi_cfg->frequency < 125000) {  in configure()
260 		return -EINVAL;  in configure()
274 	config = dev_config->def_config;  in configure()
276 	/* Limit the frequency to that supported by the SPIM instance. */  in configure()
277 	config.frequency = get_nrf_spim_frequency(MIN(spi_cfg->frequency,  in configure()
279 	config.mode      = get_nrf_spim_mode(spi_cfg->operation);  in configure()
280 	config.bit_order = get_nrf_spim_bit_order(spi_cfg->operation);  in configure()
282 	sck_pin = nrfy_spim_sck_pin_get(dev_config->spim.p_reg);  in configure()
285 		nrfy_gpio_pin_write(sck_pin, spi_cfg->operation & SPI_MODE_CPOL ? 1 : 0);  in configure()
288 	if (dev_data->initialized) {  in configure()
289 		nrfx_spim_uninit(&dev_config->spim);  in configure()
290 		dev_data->initialized = false;  in configure()
293 	result = nrfx_spim_init(&dev_config->spim, &config,  in configure()
297 		return -EIO;  in configure()
300 	dev_data->initialized = true;  in configure()
302 	ctx->config = spi_cfg;  in configure()
308 static const nrfx_gpiote_t gpiote = NRFX_GPIOTE_INSTANCE(0);  variable
319  * channel and the GPIOTE channel before attempting to transmit multiple
324 	struct spi_nrfx_data *dev_data = dev->data;  in anomaly_58_workaround_setup()
325 	const struct spi_nrfx_config *dev_config = dev->config;  in anomaly_58_workaround_setup()
326 	NRF_SPIM_Type *spim = dev_config->spim.p_reg;  in anomaly_58_workaround_setup()
327 	uint32_t ppi_ch = dev_data->ppi_ch;  in anomaly_58_workaround_setup()
328 	uint32_t gpiote_ch = dev_data->gpiote_ch;  in anomaly_58_workaround_setup()
329 	uint32_t eep = (uint32_t)&gpiote.p_reg->EVENTS_IN[gpiote_ch];  in anomaly_58_workaround_setup()
330 	uint32_t tep = (uint32_t)&spim->TASKS_STOP;  in anomaly_58_workaround_setup()
332 	dev_data->anomaly_58_workaround_active = true;  in anomaly_58_workaround_setup()
335 	nrf_gpiote_event_configure(gpiote.p_reg, gpiote_ch, spim->PSEL.SCK,  in anomaly_58_workaround_setup()
337 	nrf_gpiote_event_enable(gpiote.p_reg, gpiote_ch);  in anomaly_58_workaround_setup()
339 	/* Stop the spim instance when SCK toggles */  in anomaly_58_workaround_setup()
343 	/* The spim instance cannot be stopped mid-byte, so it will finish  in anomaly_58_workaround_setup()
351 	uint32_t ppi_ch = dev_data->ppi_ch;  in anomaly_58_workaround_clear()
352 	uint32_t gpiote_ch = dev_data->gpiote_ch;  in anomaly_58_workaround_clear()
354 	if (dev_data->anomaly_58_workaround_active) {  in anomaly_58_workaround_clear()
356 		nrf_gpiote_task_disable(gpiote.p_reg, gpiote_ch);  in anomaly_58_workaround_clear()
358 		dev_data->anomaly_58_workaround_active = false;  in anomaly_58_workaround_clear()
364 	struct spi_nrfx_data *dev_data = dev->data;  in anomaly_58_workaround_init()
365 	const struct spi_nrfx_config *dev_config = dev->config;  in anomaly_58_workaround_init()
368 	dev_data->anomaly_58_workaround_active = false;  in anomaly_58_workaround_init()
370 	if (dev_config->anomaly_58_workaround) {  in anomaly_58_workaround_init()
371 		err_code = nrfx_ppi_channel_alloc(&dev_data->ppi_ch);  in anomaly_58_workaround_init()
374 			return -ENODEV;  in anomaly_58_workaround_init()
377 		err_code = nrfx_gpiote_channel_alloc(&gpiote, &dev_data->gpiote_ch);  in anomaly_58_workaround_init()
379 			LOG_ERR("Failed to allocate GPIOTE channel");  in anomaly_58_workaround_init()
380 			return -ENODEV;  in anomaly_58_workaround_init()
382 		LOG_DBG("PAN 58 workaround enabled for %s: ppi %u, gpiote %u",  in anomaly_58_workaround_init()
383 			dev->name, dev_data->ppi_ch, dev_data->gpiote_ch);  in anomaly_58_workaround_init()
392 	struct spi_nrfx_data *dev_data = dev->data;  in finish_transaction()
393 	struct spi_context *ctx = &dev_data->ctx;  in finish_transaction()
398 	dev_data->busy = false;  in finish_transaction()
405 	struct spi_nrfx_data *dev_data = dev->data;  in transfer_next_chunk()
406 	const struct spi_nrfx_config *dev_config = dev->config;  in transfer_next_chunk()
407 	struct spi_context *ctx = &dev_data->ctx;  in transfer_next_chunk()
415 		const uint8_t *tx_buf = ctx->tx_buf;  in transfer_next_chunk()
416 		uint8_t *rx_buf = ctx->rx_buf;  in transfer_next_chunk()
418 		if (chunk_len > dev_config->max_chunk_len) {  in transfer_next_chunk()
419 			chunk_len = dev_config->max_chunk_len;  in transfer_next_chunk()
424 		    !nrf_dma_accessible_check(&dev_config->spim.p_reg, tx_buf)) {  in transfer_next_chunk()
430 			memcpy(dev_data->tx_buffer, tx_buf, chunk_len);  in transfer_next_chunk()
432 			if (dev_config->mem_attr & DT_MEM_CACHEABLE) {  in transfer_next_chunk()
433 				sys_cache_data_flush_range(dev_data->tx_buffer, chunk_len);  in transfer_next_chunk()
436 			tx_buf = dev_data->tx_buffer;  in transfer_next_chunk()
440 		    !nrf_dma_accessible_check(&dev_config->spim.p_reg, rx_buf)) {  in transfer_next_chunk()
446 			rx_buf = dev_data->rx_buffer;  in transfer_next_chunk()
450 		dev_data->chunk_len = chunk_len;  in transfer_next_chunk()
459 			if (dev_config->anomaly_58_workaround) {  in transfer_next_chunk()
464 				error = -EIO;  in transfer_next_chunk()
469 			result = nrfx_spim_xfer(&dev_config->spim, &xfer, 0);  in transfer_next_chunk()
473 			error = -EIO;  in transfer_next_chunk()
486 	struct spi_nrfx_data *dev_data = dev->data;  in event_handler()
488 	const struct spi_nrfx_config *dev_config = dev->config;  in event_handler()
491 	if (p_event->type == NRFX_SPIM_EVENT_DONE) {  in event_handler()
495 		if (dev_data->chunk_len == 0) {  in event_handler()
496 			finish_transaction(dev_data->dev, -ETIMEDOUT);  in event_handler()
504 		if (spi_context_rx_buf_on(&dev_data->ctx) &&  in event_handler()
505 		    p_event->xfer_desc.p_rx_buffer != NULL &&  in event_handler()
506 		    p_event->xfer_desc.p_rx_buffer != dev_data->ctx.rx_buf) {  in event_handler()
508 			if (dev_config->mem_attr & DT_MEM_CACHEABLE) {  in event_handler()
509 				sys_cache_data_invd_range(dev_data->rx_buffer, dev_data->chunk_len);  in event_handler()
512 			(void)memcpy(dev_data->ctx.rx_buf,  in event_handler()
513 				     dev_data->rx_buffer,  in event_handler()
514 				     dev_data->chunk_len);  in event_handler()
517 		spi_context_update_tx(&dev_data->ctx, 1, dev_data->chunk_len);  in event_handler()
518 		spi_context_update_rx(&dev_data->ctx, 1, dev_data->chunk_len);  in event_handler()
520 		transfer_next_chunk(dev_data->dev);  in event_handler()
532 	struct spi_nrfx_data *dev_data = dev->data;  in transceive()
533 	const struct spi_nrfx_config *dev_config = dev->config;  in transceive()
534 	void *reg = dev_config->spim.p_reg;  in transceive()
538 	spi_context_lock(&dev_data->ctx, asynchronous, cb, userdata, spi_cfg);  in transceive()
547 		dev_data->busy = true;  in transceive()
549 		if (dev_config->wake_pin != WAKE_PIN_NOT_USED) {  in transceive()
550 			error = spi_nrfx_wake_request(&dev_config->wake_gpiote,  in transceive()
551 						      dev_config->wake_pin);  in transceive()
552 			if (error == -ETIMEDOUT) {  in transceive()
562 		spi_context_buffers_setup(&dev_data->ctx, tx_bufs, rx_bufs, 1);  in transceive()
566 		spi_context_cs_control(&dev_data->ctx, true);  in transceive()
570 		error = spi_context_wait_for_completion(&dev_data->ctx);  in transceive()
571 		if (error == -ETIMEDOUT) {  in transceive()
576 			dev_data->chunk_len = 0;  in transceive()
580 			nrfx_spim_uninit(&dev_config->spim);  in transceive()
581 			dev_data->initialized = false;  in transceive()
587 			finish_transaction(dev, -ETIMEDOUT);  in transceive()
590 			k_sem_reset(&dev_data->ctx.sync);  in transceive()
601 	spi_context_release(&dev_data->ctx, error);  in transceive()
629 	struct spi_nrfx_data *dev_data = dev->data;  in spi_nrfx_release()
631 	if (!spi_context_configured(&dev_data->ctx, spi_cfg)) {  in spi_nrfx_release()
632 		return -EINVAL;  in spi_nrfx_release()
635 	if (dev_data->busy) {  in spi_nrfx_release()
636 		return -EBUSY;  in spi_nrfx_release()
639 	spi_context_unlock_unconditionally(&dev_data->ctx);  in spi_nrfx_release()
658 	const struct spi_nrfx_config *dev_config = dev->config;  in spim_resume()
660 	(void)pinctrl_apply_state(dev_config->pcfg, PINCTRL_STATE_DEFAULT);  in spim_resume()
666 	nrf_gpd_retain_pins_set(dev_config->pcfg, false);  in spim_resume()
674 	const struct spi_nrfx_config *dev_config = dev->config;  in spim_suspend()
675 	struct spi_nrfx_data *dev_data = dev->data;  in spim_suspend()
677 	if (dev_data->initialized) {  in spim_suspend()
678 		nrfx_spim_uninit(&dev_config->spim);  in spim_suspend()
679 		dev_data->initialized = false;  in spim_suspend()
687 	nrf_gpd_retain_pins_set(dev_config->pcfg, true);  in spim_suspend()
690 	(void)pinctrl_apply_state(dev_config->pcfg, PINCTRL_STATE_SLEEP);  in spim_suspend()
700 		return -ENOTSUP;  in spim_nrfx_pm_action()
708 	const struct spi_nrfx_config *dev_config = dev->config;  in spi_nrfx_init()
709 	struct spi_nrfx_data *dev_data = dev->data;  in spi_nrfx_init()
712 	err = pinctrl_apply_state(dev_config->pcfg, PINCTRL_STATE_DEFAULT);  in spi_nrfx_init()
717 	if (dev_config->wake_pin != WAKE_PIN_NOT_USED) {  in spi_nrfx_init()
718 		err = spi_nrfx_wake_init(&dev_config->wake_gpiote, dev_config->wake_pin);  in spi_nrfx_init()
719 		if (err == -ENODEV) {  in spi_nrfx_init()
720 			LOG_ERR("Failed to allocate GPIOTE channel for WAKE");  in spi_nrfx_init()
723 		if (err == -EIO) {  in spi_nrfx_init()
729 	dev_config->irq_connect();  in spi_nrfx_init()
731 	err = spi_context_cs_configure_all(&dev_data->ctx);  in spi_nrfx_init()
736 	spi_context_unlock_unconditionally(&dev_data->ctx);  in spi_nrfx_init()
748  * functions which are named according to SoC peripheral instance