ASoC: ti: davinci-mcasp: Add support for platforms using UDMA (fb0c3c6e) · Commits · 戴 / test

sound/soc/ti/Kconfig

+3 −1

Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0-only
		menu "Audio support for Texas Instruments SoCs"
		depends on DMA_OMAP \|\| TI_EDMA \|\| COMPILE_TEST
		depends on DMA_OMAP \|\| TI_EDMA \|\| TI_K3_UDMA \|\| COMPILE_TEST

		config SND_SOC_TI_EDMA_PCM
		tristate
		@@ -28,6 +28,7 @@ config SND_SOC_DAVINCI_MCASP
		tristate "Multichannel Audio Serial Port (McASP) support"
		select SND_SOC_TI_EDMA_PCM
		select SND_SOC_TI_SDMA_PCM
		select SND_SOC_TI_UDMA_PCM
		help
		Say Y or M here if you want to have support for McASP IP found in
		various Texas Instruments SoCs like:
		@@ -35,6 +36,7 @@ config SND_SOC_DAVINCI_MCASP
		- Sitara line of SoCs (AM335x, AM438x, etc)
		- DRA7x devices
		- Keystone devices
		- K3 devices (am654, j721e)

		config SND_SOC_DAVINCI_VCIF
		tristate "daVinci Voice Interface (VCIF) support"

+7 −0

Original line number	Diff line number	Diff line
		@@ -38,6 +38,7 @@

		#include "edma-pcm.h"
		#include "sdma-pcm.h"
		#include "udma-pcm.h"
		#include "davinci-mcasp.h"

		#define MCASP_MAX_AFIFO_DEPTH 64
		@@ -1875,6 +1876,7 @@ nodata:
		enum {
		PCM_EDMA,
		PCM_SDMA,
		PCM_UDMA,
		};
		static const char *sdma_prefix = "ti,omap";

		@@ -1912,6 +1914,8 @@ static int davinci_mcasp_get_dma_type(struct davinci_mcasp *mcasp)
		dev_dbg(mcasp->dev, "DMA controller compatible = \"%s\"\n", tmp);
		if (!strncmp(tmp, sdma_prefix, strlen(sdma_prefix)))
		return PCM_SDMA;
		else if (strstr(tmp, "udmap"))
		return PCM_UDMA;

		return PCM_EDMA;
		}
		@@ -2371,6 +2375,9 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
		case PCM_SDMA:
		ret = sdma_pcm_platform_register(&pdev->dev, "tx", "rx");
		break;
		case PCM_UDMA:
		ret = udma_pcm_platform_register(&pdev->dev);
		break;
		default:
		dev_err(&pdev->dev, "No DMA controller found (%d)\n", ret);
		case -EPROBE_DEFER: