diff options
| author | Frank Li <Frank.Li@nxp.com> | 2023-08-21 12:16:15 -0400 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-08-22 20:11:03 +0530 |
| commit | 7536f8b371adcc1c4f7ed7ca579da24bdeb14b6f (patch) | |
| tree | a6d96de1ffccaf1f85a16aab35ab86d30baca125 /drivers/dma/mcf-edma-main.c | |
| parent | 9b05554c5ca6829a60c610191d45f244d8726e95 (diff) | |
dmaengine: fsl-edma: move tcd into struct fsl_dma_chan
Relocates the tcd into the fsl_dma_chan structure. This adjustment reduces
the need to reference back to fsl_edma_engine, paving the way for EDMA V3
support.
Unified the edma_writel and edma_writew functions for accessing TCD
(Transfer Control Descriptor) registers. A new macro is added that can
automatically detect whether a 32-bit or 16-bit access should be used
based on the structure field definition. This provide better support
64-bit TCD with future v5 version.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202305271951.gmRobs3a-lkp@intel.com/
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20230821161617.2142561-11-Frank.Li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/mcf-edma-main.c')
| -rw-r--r-- | drivers/dma/mcf-edma-main.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/mcf-edma-main.c b/drivers/dma/mcf-edma-main.c index ec8a8e1930b5..a903461da5bd 100644 --- a/drivers/dma/mcf-edma-main.c +++ b/drivers/dma/mcf-edma-main.c @@ -199,7 +199,9 @@ static int mcf_edma_probe(struct platform_device *pdev) mcf_chan->dma_dir = DMA_NONE; mcf_chan->vchan.desc_free = fsl_edma_free_desc; vchan_init(&mcf_chan->vchan, &mcf_edma->dma_dev); - iowrite32(0x0, ®s->tcd[i].csr); + mcf_chan->tcd = mcf_edma->membase + EDMA_TCD + + i * sizeof(struct fsl_edma_hw_tcd); + iowrite32(0x0, &mcf_chan->tcd->csr); } iowrite32(~0, regs->inth); |