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ASoC: ti: davinci-mcasp: Add support for the OMAP4 version of McASP

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There is a single McASP on OMAP4 (and OMAP5) which is configured to only
support DIT playback mode on a single serializer.

Add 0x200 offset to DAT port address as the TRM suggests it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20210705194249.2385-4-peter.ujfalusi@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2021-07-05 22:42:47 +03:00 committed by Mark Brown
parent 5dcd276e15
commit 0238bcf80e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
3 changed files with 25 additions and 3 deletions
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1
include/linux/platform_data/davinci_asp.h
View File

@ -96,6 +96,7 @@ enum {
MCASP_VERSION_2, /* DA8xx/OMAPL1x */
MCASP_VERSION_3, /* TI81xx/AM33xx */
MCASP_VERSION_4, /* DRA7xxx */
MCASP_VERSION_OMAP, /* OMAP4/5 */
};
enum mcbsp_clk_input_pin {

1
sound/soc/ti/Kconfig
View File

@ -35,6 +35,7 @@ config SND_SOC_DAVINCI_MCASP
various Texas Instruments SoCs like:
- daVinci devices
- Sitara line of SoCs (AM335x, AM438x, etc)
- OMAP4
- DRA7x devices
- Keystone devices
- K3 devices (am654, j721e)

26
sound/soc/ti/davinci-mcasp.c
View File

@ -1794,6 +1794,12 @@ static struct davinci_mcasp_pdata dra7_mcasp_pdata = {
.version = MCASP_VERSION_4,
};
static struct davinci_mcasp_pdata omap_mcasp_pdata = {
.tx_dma_offset = 0x200,
.rx_dma_offset = 0,
.version = MCASP_VERSION_OMAP,
};
static const struct of_device_id mcasp_dt_ids[] = {
{
.compatible = "ti,dm646x-mcasp-audio",
@ -1811,6 +1817,10 @@ static const struct of_device_id mcasp_dt_ids[] = {
.compatible = "ti,dra7-mcasp-audio",
.data = &dra7_mcasp_pdata,
},
{
.compatible = "ti,omap4-mcasp-audio",
.data = &omap_mcasp_pdata,
},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mcasp_dt_ids);
@ -2350,10 +2360,17 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK];
dma_data->filter_data = "tx";
if (dat)
if (dat) {
dma_data->addr = dat->start;
else
/*
* According to the TRM there should be 0x200 offset added to
* the DAT port address
*/
if (mcasp->version == MCASP_VERSION_OMAP)
dma_data->addr += davinci_mcasp_txdma_offset(mcasp->pdata);
} else {
dma_data->addr = mem->start + davinci_mcasp_txdma_offset(mcasp->pdata);
}
/* RX is not valid in DIT mode */
@ -2418,7 +2435,10 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
ret = edma_pcm_platform_register(&pdev->dev);
break;
case PCM_SDMA:
ret = sdma_pcm_platform_register(&pdev->dev, "tx", "rx");
if (mcasp->op_mode == DAVINCI_MCASP_IIS_MODE)
ret = sdma_pcm_platform_register(&pdev->dev, "tx", "rx");
else
ret = sdma_pcm_platform_register(&pdev->dev, "tx", NULL);
break;
case PCM_UDMA:
ret = udma_pcm_platform_register(&pdev->dev);