From: Biju Das biju.das.jz@bp.renesas.com
[ Upstream commit 6f381481a5b236cb53d6de2c49c6ef83a4d0f432 ]
The direction field in the DMA config is deprecated. The rspi driver sets {src,dst}_{addr,addr_width} based on the DMA direction and it results in dmaengine_slave_config() failure as RZ DMAC driver validates {src,dst}_addr_width values independent of DMA direction.
This patch fixes the issue by passing both {src,dst}_{addr,addr_width} values independent of DMA direction.
Signed-off-by: Biju Das biju.das.jz@bp.renesas.com Suggested-by: Vinod Koul vkoul@kernel.org Reviewed-by: Vinod Koul vkoul@kernel.org Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Tested-by: Geert Uytterhoeven geert+renesas@glider.be Link: https://lore.kernel.org/r/20220411173115.6619-1-biju.das.jz@bp.renesas.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/spi/spi-rspi.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-)
diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index 7222c7689c3c..0524741d73b9 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -1044,14 +1044,11 @@ static struct dma_chan *rspi_request_dma_chan(struct device *dev, }
memset(&cfg, 0, sizeof(cfg)); + cfg.dst_addr = port_addr + RSPI_SPDR; + cfg.src_addr = port_addr + RSPI_SPDR; + cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; + cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; cfg.direction = dir; - if (dir == DMA_MEM_TO_DEV) { - cfg.dst_addr = port_addr; - cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; - } else { - cfg.src_addr = port_addr; - cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; - }
ret = dmaengine_slave_config(chan, &cfg); if (ret) { @@ -1082,12 +1079,12 @@ static int rspi_request_dma(struct device *dev, struct spi_controller *ctlr, }
ctlr->dma_tx = rspi_request_dma_chan(dev, DMA_MEM_TO_DEV, dma_tx_id, - res->start + RSPI_SPDR); + res->start); if (!ctlr->dma_tx) return -ENODEV;
ctlr->dma_rx = rspi_request_dma_chan(dev, DMA_DEV_TO_MEM, dma_rx_id, - res->start + RSPI_SPDR); + res->start); if (!ctlr->dma_rx) { dma_release_channel(ctlr->dma_tx); ctlr->dma_tx = NULL;