On DA830 devices McASP0,1 and 2 shares a single combined interrupt request line.

Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com --- sound/soc/davinci/davinci-mcasp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c index 95eef582331b..a5e4fe0359ce 100644 --- a/sound/soc/davinci/davinci-mcasp.c +++ b/sound/soc/davinci/davinci-mcasp.c @@ -1461,7 +1461,8 @@ static int davinci_mcasp_probe(struct platform_device *pdev) dev_name(&pdev->dev)); ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, davinci_mcasp_common_irq_handler, - IRQF_ONESHOT, irq_name, mcasp); + IRQF_ONESHOT | IRQF_SHARED, + irq_name, mcasp); if (ret) { dev_err(&pdev->dev, "common IRQ request failed\n"); goto err;

One of the McASP instances in DM646x line of DMSoC only supports DIT mode. This means that the given IP does not have support for rx and all the rx related resources are missing, like irq and DMA request. The driver should not fail if any or all of the RX resource is missing when the op_mode is set to DIT mode. Since RX is not possible in DIT mode, we can just ignore the rx resources when the McASP is used in DIT mode.

Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com --- sound/soc/davinci/davinci-mcasp.c | 72 +++++++++++++++++++++------------------ 1 file changed, 39 insertions(+), 33 deletions(-)

diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c index a5e4fe0359ce..de3b155a5011 100644 --- a/sound/soc/davinci/davinci-mcasp.c +++ b/sound/soc/davinci/davinci-mcasp.c @@ -1327,16 +1327,19 @@ static struct davinci_mcasp_pdata *davinci_mcasp_set_pdata_from_of(

pdata->tx_dma_channel = dma_spec.args[0];

- ret = of_property_match_string(np, "dma-names", "rx"); - if (ret < 0) - goto nodata; + /* RX is not valid in DIT mode */ + if (pdata->op_mode != DAVINCI_MCASP_DIT_MODE) { + ret = of_property_match_string(np, "dma-names", "rx"); + if (ret < 0) + goto nodata;

- ret = of_parse_phandle_with_args(np, "dmas", "#dma-cells", ret, - &dma_spec); - if (ret < 0) - goto nodata; + ret = of_parse_phandle_with_args(np, "dmas", "#dma-cells", ret, + &dma_spec); + if (ret < 0) + goto nodata;

- pdata->rx_dma_channel = dma_spec.args[0]; + pdata->rx_dma_channel = dma_spec.args[0]; + }

ret = of_property_read_u32(np, "tx-num-evt", &val); if (ret >= 0) @@ -1532,19 +1535,34 @@ static int davinci_mcasp_probe(struct platform_device *pdev) else dma_data->filter_data = &dma_params->channel;

- dma_params = &mcasp->dma_params[SNDRV_PCM_STREAM_CAPTURE]; - dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE]; - dma_params->asp_chan_q = pdata->asp_chan_q; - dma_params->ram_chan_q = pdata->ram_chan_q; - dma_params->sram_pool = pdata->sram_pool; - dma_params->sram_size = pdata->sram_size_capture; - if (dat) - dma_params->dma_addr = dat->start; - else - dma_params->dma_addr = mem->start + pdata->rx_dma_offset; - - /* Unconditional dmaengine stuff */ - dma_data->addr = dma_params->dma_addr; + /* RX is not valid in DIT mode */ + if (mcasp->op_mode != DAVINCI_MCASP_DIT_MODE) { + dma_params = &mcasp->dma_params[SNDRV_PCM_STREAM_CAPTURE]; + dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE]; + dma_params->asp_chan_q = pdata->asp_chan_q; + dma_params->ram_chan_q = pdata->ram_chan_q; + dma_params->sram_pool = pdata->sram_pool; + dma_params->sram_size = pdata->sram_size_capture; + if (dat) + dma_params->dma_addr = dat->start; + else + dma_params->dma_addr = mem->start + pdata->rx_dma_offset; + + /* Unconditional dmaengine stuff */ + dma_data->addr = dma_params->dma_addr; + + res = platform_get_resource(pdev, IORESOURCE_DMA, 1); + if (res) + dma_params->channel = res->start; + else + dma_params->channel = pdata->rx_dma_channel; + + /* dmaengine filter data for DT and non-DT boot */ + if (pdev->dev.of_node) + dma_data->filter_data = "rx"; + else + dma_data->filter_data = &dma_params->channel; + }

if (mcasp->version < MCASP_VERSION_3) { mcasp->fifo_base = DAVINCI_MCASP_V2_AFIFO_BASE; @@ -1554,18 +1572,6 @@ static int davinci_mcasp_probe(struct platform_device *pdev) mcasp->fifo_base = DAVINCI_MCASP_V3_AFIFO_BASE; }

- res = platform_get_resource(pdev, IORESOURCE_DMA, 1); - if (res) - dma_params->channel = res->start; - else - dma_params->channel = pdata->rx_dma_channel; - - /* dmaengine filter data for DT and non-DT boot */ - if (pdev->dev.of_node) - dma_data->filter_data = "rx"; - else - dma_data->filter_data = &dma_params->channel; - dev_set_drvdata(&pdev->dev, mcasp);

mcasp_reparent_fck(pdev);