| From e56d4fdbae55f9daa5dedb7af34fb2310cb7192b Mon Sep 17 00:00:00 2001 |
| From: Geert Uytterhoeven <geert+renesas@glider.be> |
| Date: Mon, 2 Jun 2014 15:38:18 +0200 |
| Subject: spi: rspi: Add DMA support for RSPI on RZ/A1H |
| |
| Enable DMA support for RSPI on r7s72100 (RZ/A1H). |
| |
| Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> |
| Signed-off-by: Mark Brown <broonie@linaro.org> |
| (cherry picked from commit e7fb921d9f62df05240ad1a74b5a0f623e503c9c) |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| --- |
| drivers/spi/spi-rspi.c | 3 +++ |
| 1 file changed, 3 insertions(+) |
| |
| diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c |
| index bec81470dd9c..4bc4138e002b 100644 |
| --- a/drivers/spi/spi-rspi.c |
| +++ b/drivers/spi/spi-rspi.c |
| @@ -625,6 +625,9 @@ static int rspi_rz_transfer_one(struct spi_master *master, |
| |
| rspi_rz_receive_init(rspi); |
| |
| + if (master->can_dma && __rspi_can_dma(rspi, xfer)) |
| + return rspi_dma_transfer(rspi, &xfer->tx_sg, &xfer->rx_sg); |
| + |
| ret = rspi_pio_transfer(rspi, xfer->tx_buf, xfer->rx_buf, xfer->len); |
| if (ret < 0) |
| return ret; |
| -- |
| 2.1.2 |
| |
