diff options
| author | Frank Li <Frank.Li@nxp.com> | 2023-08-21 19:16:15 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-08-22 17:41:03 +0300 |
| commit | 7536f8b371adcc1c4f7ed7ca579da24bdeb14b6f (patch) | |
| tree | a6d96de1ffccaf1f85a16aab35ab86d30baca125 /drivers/dma/fsl-edma-main.c | |
| parent | 9b05554c5ca6829a60c610191d45f244d8726e95 (diff) | |
| download | linux-7536f8b371adcc1c4f7ed7ca579da24bdeb14b6f.tar.xz | |
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/fsl-edma-main.c')
| -rw-r--r-- | drivers/dma/fsl-edma-main.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c index d68ea16ddf1b..72b7587226df 100644 --- a/drivers/dma/fsl-edma-main.c +++ b/drivers/dma/fsl-edma-main.c @@ -320,9 +320,11 @@ static int fsl_edma_probe(struct platform_device *pdev) fsl_chan->idle = true; fsl_chan->dma_dir = DMA_NONE; fsl_chan->vchan.desc_free = fsl_edma_free_desc; + fsl_chan->tcd = fsl_edma->membase + EDMA_TCD + + i * sizeof(struct fsl_edma_hw_tcd); vchan_init(&fsl_chan->vchan, &fsl_edma->dma_dev); - edma_writew(fsl_edma, 0x0, ®s->tcd[i].csr); + edma_write_tcdreg(fsl_chan, 0, csr); fsl_edma_chan_mux(fsl_chan, 0, false); } @@ -430,7 +432,7 @@ static int fsl_edma_resume_early(struct device *dev) for (i = 0; i < fsl_edma->n_chans; i++) { fsl_chan = &fsl_edma->chans[i]; fsl_chan->pm_state = RUNNING; - edma_writew(fsl_edma, 0x0, ®s->tcd[i].csr); + edma_write_tcdreg(fsl_chan, 0, csr); if (fsl_chan->slave_id != 0) fsl_edma_chan_mux(fsl_chan, fsl_chan->slave_id, true); } |