diff options
| author | Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com> | 2025-12-01 16:42:25 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-12-14 13:38:35 +0300 |
| commit | 1e5e10df8b9be71ca64435cbe7c96b189e5ee293 (patch) | |
| tree | de6479fe840e0a02b229d9bbeb3a4087cc2ebce1 | |
| parent | d49eea07de5851e1b8941ad6b6179be7ec36a986 (diff) | |
| download | linux-1e5e10df8b9be71ca64435cbe7c96b189e5ee293.tar.xz | |
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: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Link: https://patch.msgid.link/20251201134229.600817-10-cosmin-gabriel.tanislav.xa@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | drivers/spi/spi-rzv2h-rspi.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/spi/spi-rzv2h-rspi.c b/drivers/spi/spi-rzv2h-rspi.c index b31ef2f31f1b..9f5bc047b485 100644 --- a/drivers/spi/spi-rzv2h-rspi.c +++ b/drivers/spi/spi-rzv2h-rspi.c @@ -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; |