Unverified Commit 1e5e10df authored by Cosmin Tanislav's avatar Cosmin Tanislav Committed by Mark Brown
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spi: rzv2h-rspi: split out PIO transfer 



In preparation for implementing DMA support, split out the PIO transfer
code into its own function.

Signed-off-by: default avatarCosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Link: https://patch.msgid.link/20251201134229.600817-10-cosmin-gabriel.tanislav.xa@renesas.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent d49eea07

drivers/spi/spi-rzv2h-rspi.c

+20 −7
Original line number Diff line number Diff line
@@ -219,17 +219,14 @@ static int rzv2h_rspi_receive(struct rzv2h_rspi_priv *rspi, void *rxbuf, 
	return 0;

}



static int rzv2h_rspi_transfer_one(struct spi_controller *controller,

static int rzv2h_rspi_transfer_pio(struct rzv2h_rspi_priv *rspi,

				   struct spi_device *spi,

				   struct spi_transfer *transfer)

				   struct spi_transfer *transfer,

				   unsigned int words_to_transfer)

{

	struct rzv2h_rspi_priv *rspi = spi_controller_get_devdata(controller);

	unsigned int words_to_transfer, i;

	unsigned int i;

	int ret = 0;



	transfer->effective_speed_hz = rspi->freq;

	words_to_transfer = transfer->len / rspi->bytes_per_word;



	for (i = 0; i < words_to_transfer; i++) {

		rzv2h_rspi_clear_all_irqs(rspi);
@@ -240,6 +237,22 @@ static int rzv2h_rspi_transfer_one(struct spi_controller *controller, 
			break;

	}



	return ret;

}



static int rzv2h_rspi_transfer_one(struct spi_controller *controller,

				   struct spi_device *spi,

				   struct spi_transfer *transfer)

{

	struct rzv2h_rspi_priv *rspi = spi_controller_get_devdata(controller);

	unsigned int words_to_transfer;

	int ret;



	transfer->effective_speed_hz = rspi->freq;

	words_to_transfer = transfer->len / rspi->bytes_per_word;



	ret = rzv2h_rspi_transfer_pio(rspi, spi, transfer, words_to_transfer);



	rzv2h_rspi_clear_all_irqs(rspi);



	return ret;