104 static int dln2_spi_enable(struct dln2_spi *dln2, bool enable)  in dln2_spi_enable()  argument
113 	tx.port = dln2->port;  in dln2_spi_enable()
123 	return dln2_transfer_tx(dln2->pdev, cmd, &tx, len);  in dln2_spi_enable()
134 static int dln2_spi_cs_set(struct dln2_spi *dln2, u8 cs_mask)  in dln2_spi_cs_set()  argument
141 	tx.port = dln2->port;  in dln2_spi_cs_set()
150 	return dln2_transfer_tx(dln2->pdev, DLN2_SPI_SET_SS, &tx, sizeof(tx));  in dln2_spi_cs_set()
156 static int dln2_spi_cs_set_one(struct dln2_spi *dln2, u8 cs)  in dln2_spi_cs_set_one()  argument
158 	return dln2_spi_cs_set(dln2, BIT(cs));  in dln2_spi_cs_set_one()
164 static int dln2_spi_cs_enable(struct dln2_spi *dln2, u8 cs_mask, bool enable)  in dln2_spi_cs_enable()  argument
172 	tx.port = dln2->port;  in dln2_spi_cs_enable()
176 	return dln2_transfer_tx(dln2->pdev, cmd, &tx, sizeof(tx));  in dln2_spi_cs_enable()
179 static int dln2_spi_cs_enable_all(struct dln2_spi *dln2, bool enable)  in dln2_spi_cs_enable_all()  argument
181 	u8 cs_mask = GENMASK(dln2->master->num_chipselect - 1, 0);  in dln2_spi_cs_enable_all()
183 	return dln2_spi_cs_enable(dln2, cs_mask, enable);  in dln2_spi_cs_enable_all()
186 static int dln2_spi_get_cs_num(struct dln2_spi *dln2, u16 *cs_num)  in dln2_spi_get_cs_num()  argument
197 	tx.port = dln2->port;  in dln2_spi_get_cs_num()
198 	ret = dln2_transfer(dln2->pdev, DLN2_SPI_GET_SS_COUNT, &tx, sizeof(tx),  in dln2_spi_get_cs_num()
207 	dev_dbg(&dln2->pdev->dev, "cs_num = %d\n", *cs_num);  in dln2_spi_get_cs_num()
212 static int dln2_spi_get_speed(struct dln2_spi *dln2, u16 cmd, u32 *freq)  in dln2_spi_get_speed()  argument
223 	tx.port = dln2->port;  in dln2_spi_get_speed()
225 	ret = dln2_transfer(dln2->pdev, cmd, &tx, sizeof(tx), &rx, &rx_len);  in dln2_spi_get_speed()
239 static int dln2_spi_get_speed_range(struct dln2_spi *dln2, u32 *fmin, u32 *fmax)  in dln2_spi_get_speed_range()  argument
243 	ret = dln2_spi_get_speed(dln2, DLN2_SPI_GET_MIN_FREQUENCY, fmin);  in dln2_spi_get_speed_range()
247 	ret = dln2_spi_get_speed(dln2, DLN2_SPI_GET_MAX_FREQUENCY, fmax);  in dln2_spi_get_speed_range()
251 	dev_dbg(&dln2->pdev->dev, "freq_min = %d, freq_max = %d\n",  in dln2_spi_get_speed_range()
261 static int dln2_spi_set_speed(struct dln2_spi *dln2, u32 speed)  in dln2_spi_set_speed()  argument
273 	tx.port = dln2->port;  in dln2_spi_set_speed()
276 	ret = dln2_transfer(dln2->pdev, DLN2_SPI_SET_FREQUENCY, &tx, sizeof(tx),  in dln2_spi_set_speed()
289 static int dln2_spi_set_mode(struct dln2_spi *dln2, u8 mode)  in dln2_spi_set_mode()  argument
296 	tx.port = dln2->port;  in dln2_spi_set_mode()
299 	return dln2_transfer_tx(dln2->pdev, DLN2_SPI_SET_MODE, &tx, sizeof(tx));  in dln2_spi_set_mode()
305 static int dln2_spi_set_bpw(struct dln2_spi *dln2, u8 bpw)  in dln2_spi_set_bpw()  argument
312 	tx.port = dln2->port;  in dln2_spi_set_bpw()
315 	return dln2_transfer_tx(dln2->pdev, DLN2_SPI_SET_FRAME_SIZE,  in dln2_spi_set_bpw()
319 static int dln2_spi_get_supported_frame_sizes(struct dln2_spi *dln2,  in dln2_spi_get_supported_frame_sizes()  argument
329 	} *rx = dln2->buf;  in dln2_spi_get_supported_frame_sizes()
333 	tx.port = dln2->port;  in dln2_spi_get_supported_frame_sizes()
335 	ret = dln2_transfer(dln2->pdev, DLN2_SPI_GET_SUPPORTED_FRAME_SIZES,  in dln2_spi_get_supported_frame_sizes()
348 	dev_dbg(&dln2->pdev->dev, "bpw_mask = 0x%X\n", *bpw_mask);  in dln2_spi_get_supported_frame_sizes()
421 static int dln2_spi_write_one(struct dln2_spi *dln2, const u8 *data,  in dln2_spi_write_one()  argument
429 	} __packed *tx = dln2->buf;  in dln2_spi_write_one()
437 	tx->port = dln2->port;  in dln2_spi_write_one()
441 	dln2_spi_copy_to_buf(tx->buf, data, data_len, dln2->bpw);  in dln2_spi_write_one()
444 	return dln2_transfer_tx(dln2->pdev, DLN2_SPI_WRITE, tx, tx_len);  in dln2_spi_write_one()
450 static int dln2_spi_read_one(struct dln2_spi *dln2, u8 *data,  in dln2_spi_read_one()  argument
462 	} __packed *rx = dln2->buf;  in dln2_spi_read_one()
470 	tx.port = dln2->port;  in dln2_spi_read_one()
474 	ret = dln2_transfer(dln2->pdev, DLN2_SPI_READ, &tx, sizeof(tx),  in dln2_spi_read_one()
483 	dln2_spi_copy_from_buf(data, rx->buf, data_len, dln2->bpw);  in dln2_spi_read_one()
491 static int dln2_spi_read_write_one(struct dln2_spi *dln2, const u8 *tx_data,  in dln2_spi_read_write_one()  argument
518 	tx = dln2->buf;  in dln2_spi_read_write_one()
519 	rx = dln2->buf;  in dln2_spi_read_write_one()
521 	tx->port = dln2->port;  in dln2_spi_read_write_one()
525 	dln2_spi_copy_to_buf(tx->buf, tx_data, data_len, dln2->bpw);  in dln2_spi_read_write_one()
530 	ret = dln2_transfer(dln2->pdev, DLN2_SPI_READ_WRITE, tx, tx_len,  in dln2_spi_read_write_one()
539 	dln2_spi_copy_from_buf(rx_data, rx->buf, data_len, dln2->bpw);  in dln2_spi_read_write_one()
548 static int dln2_spi_rdwr(struct dln2_spi *dln2, const u8 *tx_data,  in dln2_spi_rdwr()  argument
568 			ret = dln2_spi_read_write_one(dln2,  in dln2_spi_rdwr()
573 			ret = dln2_spi_write_one(dln2,  in dln2_spi_rdwr()
577 			ret = dln2_spi_read_one(dln2,  in dln2_spi_rdwr()
597 	struct dln2_spi *dln2 = spi_master_get_devdata(master);  in dln2_spi_prepare_message()  local
600 	if (dln2->cs != spi->chip_select) {  in dln2_spi_prepare_message()
601 		ret = dln2_spi_cs_set_one(dln2, spi->chip_select);  in dln2_spi_prepare_message()
605 		dln2->cs = spi->chip_select;  in dln2_spi_prepare_message()
611 static int dln2_spi_transfer_setup(struct dln2_spi *dln2, u32 speed,  in dln2_spi_transfer_setup()  argument
617 	bus_setup_change = dln2->speed != speed || dln2->mode != mode ||  in dln2_spi_transfer_setup()
618 			   dln2->bpw != bpw;  in dln2_spi_transfer_setup()
623 	ret = dln2_spi_enable(dln2, false);  in dln2_spi_transfer_setup()
627 	if (dln2->speed != speed) {  in dln2_spi_transfer_setup()
628 		ret = dln2_spi_set_speed(dln2, speed);  in dln2_spi_transfer_setup()
632 		dln2->speed = speed;  in dln2_spi_transfer_setup()
635 	if (dln2->mode != mode) {  in dln2_spi_transfer_setup()
636 		ret = dln2_spi_set_mode(dln2, mode & 0x3);  in dln2_spi_transfer_setup()
640 		dln2->mode = mode;  in dln2_spi_transfer_setup()
643 	if (dln2->bpw != bpw) {  in dln2_spi_transfer_setup()
644 		ret = dln2_spi_set_bpw(dln2, bpw);  in dln2_spi_transfer_setup()
648 		dln2->bpw = bpw;  in dln2_spi_transfer_setup()
651 	return dln2_spi_enable(dln2, true);  in dln2_spi_transfer_setup()
658 	struct dln2_spi *dln2 = spi_master_get_devdata(master);  in dln2_spi_transfer_one()  local
662 	status = dln2_spi_transfer_setup(dln2, xfer->speed_hz,  in dln2_spi_transfer_one()
666 		dev_err(&dln2->pdev->dev, "Cannot setup transfer\n");  in dln2_spi_transfer_one()
673 	status = dln2_spi_rdwr(dln2, xfer->tx_buf, xfer->rx_buf,  in dln2_spi_transfer_one()
676 		dev_err(&dln2->pdev->dev, "write/read failed!\n");  in dln2_spi_transfer_one()
684 	struct dln2_spi *dln2;  in dln2_spi_probe()  local
688 	master = spi_alloc_master(&pdev->dev, sizeof(*dln2));  in dln2_spi_probe()
694 	dln2 = spi_master_get_devdata(master);  in dln2_spi_probe()
696 	dln2->buf = devm_kmalloc(&pdev->dev, DLN2_SPI_BUF_SIZE, GFP_KERNEL);  in dln2_spi_probe()
697 	if (!dln2->buf) {  in dln2_spi_probe()
702 	dln2->master = master;  in dln2_spi_probe()
703 	dln2->pdev = pdev;  in dln2_spi_probe()
704 	dln2->port = pdata->port;  in dln2_spi_probe()
706 	dln2->cs = 0xff;  in dln2_spi_probe()
707 	dln2->mode = 0xff;  in dln2_spi_probe()
710 	ret = dln2_spi_enable(dln2, false);  in dln2_spi_probe()
716 	ret = dln2_spi_get_cs_num(dln2, &master->num_chipselect);  in dln2_spi_probe()
722 	ret = dln2_spi_get_speed_range(dln2,  in dln2_spi_probe()
730 	ret = dln2_spi_get_supported_frame_sizes(dln2,  in dln2_spi_probe()
737 	ret = dln2_spi_cs_enable_all(dln2, true);  in dln2_spi_probe()
750 	ret = dln2_spi_enable(dln2, true);  in dln2_spi_probe()
774 	if (dln2_spi_enable(dln2, false) < 0)  in dln2_spi_probe()
785 	struct dln2_spi *dln2 = spi_master_get_devdata(master);  in dln2_spi_remove()  local
789 	if (dln2_spi_enable(dln2, false) < 0)  in dln2_spi_remove()
800 	struct dln2_spi *dln2 = spi_master_get_devdata(master);  in dln2_spi_suspend()  local
807 		ret = dln2_spi_enable(dln2, false);  in dln2_spi_suspend()
816 	dln2->cs = 0xff;  in dln2_spi_suspend()
817 	dln2->speed = 0;  in dln2_spi_suspend()
818 	dln2->bpw = 0;  in dln2_spi_suspend()
819 	dln2->mode = 0xff;  in dln2_spi_suspend()
828 	struct dln2_spi *dln2 = spi_master_get_devdata(master);  in dln2_spi_resume()  local
831 		ret = dln2_spi_cs_enable_all(dln2, true);  in dln2_spi_resume()
835 		ret = dln2_spi_enable(dln2, true);  in dln2_spi_resume()
848 	struct dln2_spi *dln2 = spi_master_get_devdata(master);  in dln2_spi_runtime_suspend()  local
850 	return dln2_spi_enable(dln2, false);  in dln2_spi_runtime_suspend()
856 	struct dln2_spi *dln2 = spi_master_get_devdata(master);  in dln2_spi_runtime_resume()  local
858 	return  dln2_spi_enable(dln2, true);  in dln2_spi_runtime_resume()