4  * SPDX-License-Identifier: Apache-2.0
37 #define SPI_CFG(dev)                    ((struct spi_b91_cfg *) ((dev)->config))
43 #define SPI_DATA(dev)                   ((struct spi_b91_data *) ((dev)->data))
54 		pin = config->cs_pin[i];  in spi_b91_hw_cs_disable()
58 			if (config->peripheral_id == PSPI_MODULE) {  in spi_b91_hw_cs_disable()
85 	/* check for correct slave id */  in spi_b91_config_cs()
86 	if (config->slave >= CHIP_SELECT_COUNT) {  in spi_b91_config_cs()
87 		LOG_ERR("Slave %d not supported (max. %d)", config->slave, CHIP_SELECT_COUNT - 1);  in spi_b91_config_cs()
94 		cs_pin = b91_config->cs_pin[cs_id];  in spi_b91_config_cs()
96 		/*  if cs pin is not defined for the selected slave, return error */  in spi_b91_config_cs()
97 		if ((cs_pin == 0) && (cs_id == config->slave)) {  in spi_b91_config_cs()
98 			LOG_ERR("cs%d-pin is not defined in device tree", config->slave);  in spi_b91_config_cs()
103 		if ((cs_pin != 0) && (cs_id != config->slave)) {  in spi_b91_config_cs()
104 			if (b91_config->peripheral_id == PSPI_MODULE) {  in spi_b91_config_cs()
112 		if ((cs_pin != 0) && (cs_id == config->slave)) {  in spi_b91_config_cs()
113 			if (b91_config->peripheral_id == PSPI_MODULE) {  in spi_b91_config_cs()
132 	const struct spi_buf *tx_buf = tx_bufs->buffers;  in spi_b91_get_txrx_len()
133 	const struct spi_buf *rx_buf = rx_bufs->buffers;  in spi_b91_get_txrx_len()
136 	for (int i = 0; i < tx_bufs->count; i++) {  in spi_b91_get_txrx_len()
137 		len_tx += tx_buf->len;  in spi_b91_get_txrx_len()
142 	for (int i = 0; i < rx_bufs->count; i++) {  in spi_b91_get_txrx_len()
143 		len_rx += rx_buf->len;  in spi_b91_get_txrx_len()
158 			tx = *(uint8_t *)(ctx->tx_buf);  in spi_b91_tx()
181 			*ctx->rx_buf = rx;  in spi_b91_rx()
193 	struct spi_context *ctx = &SPI_DATA(dev)->ctx;  in spi_b91_txrx()
196 	spi_set_transmode(cfg->peripheral_id, SPI_MODE_WRITE_AND_READ);  in spi_b91_txrx()
197 	spi_set_cmd(cfg->peripheral_id, 0);  in spi_b91_txrx()
198 	spi_tx_cnt(cfg->peripheral_id, len);  in spi_b91_txrx()
199 	spi_rx_cnt(cfg->peripheral_id, len);  in spi_b91_txrx()
204 		if (chunk_size > (len - i)) {  in spi_b91_txrx()
205 			chunk_size = len - i;  in spi_b91_txrx()
209 		spi_b91_tx(cfg->peripheral_id, ctx, chunk_size);  in spi_b91_txrx()
214 			spi_b91_rx(cfg->peripheral_id, ctx, chunk_size);  in spi_b91_txrx()
217 			spi_b91_rx(cfg->peripheral_id, ctx, chunk_size - 1);  in spi_b91_txrx()
218 		} else if ((len - i) > SPI_WR_RD_CHUNK_SIZE_MAX) {  in spi_b91_txrx()
220 			spi_b91_rx(cfg->peripheral_id, ctx, chunk_size);  in spi_b91_txrx()
223 			spi_b91_rx(cfg->peripheral_id, ctx, chunk_size + 1);  in spi_b91_txrx()
227 		BM_SET(reg_spi_fifo_state(cfg->peripheral_id), FLD_SPI_TXF_CLR);  in spi_b91_txrx()
228 		BM_SET(reg_spi_fifo_state(cfg->peripheral_id), FLD_SPI_RXF_CLR);  in spi_b91_txrx()
232 	while (spi_is_busy(cfg->peripheral_id)) {  in spi_b91_txrx()
243 	if (config->operation & SPI_HALF_DUPLEX) {  in spi_b91_is_config_supported()
244 		LOG_ERR("Half-duplex not supported");  in spi_b91_is_config_supported()
249 	if (config->operation & SPI_MODE_LOOP) {  in spi_b91_is_config_supported()
250 		LOG_ERR("Loop back mode not supported");  in spi_b91_is_config_supported()
255 	if (config->operation & SPI_TRANSFER_LSB) {  in spi_b91_is_config_supported()
261 	if (SPI_WORD_SIZE_GET(config->operation) != SPI_WORD_SIZE) {  in spi_b91_is_config_supported()
267 	if (config->operation & SPI_CS_ACTIVE_HIGH) {  in spi_b91_is_config_supported()
274 		if ((config->operation & SPI_LINES_MASK) == SPI_LINES_OCTAL) {  in spi_b91_is_config_supported()
277 		} else if (((config->operation & SPI_LINES_MASK) ==  in spi_b91_is_config_supported()
279 			   (b91_config->peripheral_id == PSPI_MODULE)) {  in spi_b91_is_config_supported()
285 	/* check for slave configuration */  in spi_b91_is_config_supported()
286 	if (SPI_OP_MODE_GET(config->operation) == SPI_OP_MODE_SLAVE) {  in spi_b91_is_config_supported()
287 		LOG_ERR("SPI Slave is not implemented");  in spi_b91_is_config_supported()
288 		return -ENOTSUP;  in spi_b91_is_config_supported()
299 	spi_mode_type_e mode = SPI_MODE0;  in spi_b91_config()  local
302 	uint8_t clk_src = b91_config->peripheral_id == PSPI_MODULE ? sys_clk.pclk : sys_clk.hclk;  in spi_b91_config()
306 		return -ENOTSUP;  in spi_b91_config()
309 	/* config slave selection (CS): hw or sw */  in spi_b91_config()
311 		return -ENOTSUP;  in spi_b91_config()
314 	/* get SPI mode */  in spi_b91_config()
315 	if (((config->operation & SPI_MODE_CPHA) == 0) &&  in spi_b91_config()
316 	    ((config->operation & SPI_MODE_CPOL) == 0)) {  in spi_b91_config()
317 		mode = SPI_MODE0;  in spi_b91_config()
318 	} else if (((config->operation & SPI_MODE_CPHA) == 0) &&  in spi_b91_config()
319 		   ((config->operation & SPI_MODE_CPOL) == SPI_MODE_CPOL)) {  in spi_b91_config()
320 		mode = SPI_MODE1;  in spi_b91_config()
321 	} else if (((config->operation & SPI_MODE_CPHA) == SPI_MODE_CPHA) &&  in spi_b91_config()
322 		   ((config->operation & SPI_MODE_CPOL) == 0)) {  in spi_b91_config()
323 		mode = SPI_MODE2;  in spi_b91_config()
324 	} else if (((config->operation & SPI_MODE_CPHA) == SPI_MODE_CPHA) &&  in spi_b91_config()
325 		   ((config->operation & SPI_MODE_CPOL) == SPI_MODE_CPOL)) {  in spi_b91_config()
326 		mode = SPI_MODE3;  in spi_b91_config()
330 	spi_master_init(b91_config->peripheral_id,  in spi_b91_config()
331 			clk_src * 1000000 / (2 * config->frequency) - 1, mode);  in spi_b91_config()
332 	spi_master_config(b91_config->peripheral_id, SPI_NOMAL);  in spi_b91_config()
336 		uint32_t lines = config->operation & SPI_LINES_MASK;  in spi_b91_config()
339 			spi_set_io_mode(b91_config->peripheral_id,  in spi_b91_config()
342 			spi_set_io_mode(b91_config->peripheral_id,  in spi_b91_config()
345 			spi_set_io_mode(b91_config->peripheral_id,  in spi_b91_config()
351 	status = pinctrl_apply_state(b91_config->pcfg, PINCTRL_STATE_DEFAULT);  in spi_b91_config()
358 	b91_data->ctx.config = config;  in spi_b91_config()
369 	err = spi_context_cs_configure_all(&data->ctx);  in spi_b91_init()
374 	spi_context_unlock_unconditionally(&data->ctx);  in spi_b91_init()
396 	spi_context_lock(&data->ctx, false, NULL, NULL, config);  in spi_b91_transceive()
397 	spi_context_buffers_setup(&data->ctx, tx_bufs, rx_bufs, 1);  in spi_b91_transceive()
401 		spi_context_cs_control(&data->ctx, true);  in spi_b91_transceive()
409 		spi_context_cs_control(&data->ctx, false);  in spi_b91_transceive()
413 	status = spi_context_wait_for_completion(&data->ctx);  in spi_b91_transceive()
414 	spi_context_release(&data->ctx, status);  in spi_b91_transceive()
435 	return -ENOTSUP;  in spi_b91_transceive_async()
445 	if (!spi_context_configured(&data->ctx, config)) {  in spi_b91_release()
446 		return -EINVAL;  in spi_b91_release()
449 	spi_context_unlock_unconditionally(&data->ctx);  in spi_b91_release()