The dma_data.maxburst is configured runtime so no need to initialize it.
Make the omap_mcbsp_dma_reg_params() a bit more intuitive to read for the first glance by using SNDRV_PCM_STREAM_PLAYBACK/CAPTURE and to group the outermost if case by stream direction.
While there, fix the outdated comment for the function.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com --- sound/soc/omap/mcbsp.c | 30 ++++++++++++++---------------- 1 file changed, 14 insertions(+), 16 deletions(-)
diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c index 79d4dc785e5c..8c3cedfcb878 100644 --- a/sound/soc/omap/mcbsp.c +++ b/sound/soc/omap/mcbsp.c @@ -227,28 +227,27 @@ void omap_mcbsp_config(struct omap_mcbsp *mcbsp,
/** * omap_mcbsp_dma_reg_params - returns the address of mcbsp data register - * @id - mcbsp id - * @stream - indicates the direction of data flow (rx or tx) + * @mcbsp: omap_mcbsp struct for the McBSP instance + * @stream: Stream direction (playback/capture) * * Returns the address of mcbsp data transmit register or data receive register - * to be used by DMA for transferring/receiving data based on the value of - * @stream for the requested mcbsp given by @id + * to be used by DMA for transferring/receiving data */ static int omap_mcbsp_dma_reg_params(struct omap_mcbsp *mcbsp, unsigned int stream) { int data_reg;
- if (mcbsp->pdata->reg_size == 2) { - if (stream) - data_reg = OMAP_MCBSP_REG_DRR1; - else + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + if (mcbsp->pdata->reg_size == 2) data_reg = OMAP_MCBSP_REG_DXR1; - } else { - if (stream) - data_reg = OMAP_MCBSP_REG_DRR; else data_reg = OMAP_MCBSP_REG_DXR; + } else { + if (mcbsp->pdata->reg_size == 2) + data_reg = OMAP_MCBSP_REG_DRR1; + else + data_reg = OMAP_MCBSP_REG_DRR; }
return mcbsp->phys_dma_base + data_reg * mcbsp->pdata->reg_step; @@ -1034,11 +1033,10 @@ int omap_mcbsp_init(struct platform_device *pdev) mcbsp->dma_data[1].filter_data = "rx"; }
- mcbsp->dma_data[0].addr = omap_mcbsp_dma_reg_params(mcbsp, 0); - mcbsp->dma_data[0].maxburst = 4; - - mcbsp->dma_data[1].addr = omap_mcbsp_dma_reg_params(mcbsp, 1); - mcbsp->dma_data[1].maxburst = 4; + mcbsp->dma_data[0].addr = omap_mcbsp_dma_reg_params(mcbsp, + SNDRV_PCM_STREAM_PLAYBACK); + mcbsp->dma_data[1].addr = omap_mcbsp_dma_reg_params(mcbsp, + SNDRV_PCM_STREAM_CAPTURE);
mcbsp->fclk = clk_get(&pdev->dev, "fck"); if (IS_ERR(mcbsp->fclk)) {