lkml.org 
[lkml]   [2022]   [May]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH AUTOSEL 5.10 17/76] spi: spi-rspi: Remove setting {src,dst}_{addr,addr_width} based on DMA direction
Date
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 e39fd38f5180..ea03cc589e61 100644
--- a/drivers/spi/spi-rspi.c
+++ b/drivers/spi/spi-rspi.c
@@ -1107,14 +1107,11 @@ 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) {
@@ -1145,12 +1142,12 @@ 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;
--
2.35.1
\
 
 \ /
  Last update: 2022-05-30 16:24    [W:0.251 / U:0.624 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site