sound/soc/fsl/eukrea-tlv320.c

Source file repositories/reference/linux-study-clean/sound/soc/fsl/eukrea-tlv320.c

File Facts

System
Linux kernel
Corpus path
sound/soc/fsl/eukrea-tlv320.c
Extension
.c
Size
6309 bytes
Lines
227
Domain
Driver Families
Bucket
sound/soc
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (ret) {
			dev_err(&pdev->dev,
				"eukrea,model node missing or invalid.\n");
			goto err;
		}

		ssi_np = of_parse_phandle(pdev->dev.of_node,
					  "ssi-controller", 0);
		if (!ssi_np) {
			dev_err(&pdev->dev,
				"ssi-controller missing or invalid.\n");
			ret = -ENODEV;
			goto err;
		}

		codec_np = of_parse_phandle(ssi_np, "codec-handle", 0);
		if (codec_np)
			eukrea_tlv320_dai.codecs->of_node = codec_np;
		else
			dev_err(&pdev->dev, "codec-handle node missing or invalid.\n");

		ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port);
		if (ret) {
			dev_err(&pdev->dev,
				"fsl,mux-int-port node missing or invalid.\n");
			goto err;
		}
		ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port);
		if (ret) {
			dev_err(&pdev->dev,
				"fsl,mux-ext-port node missing or invalid.\n");
			goto err;
		}

		/*
		 * The port numbering in the hardware manual starts at 1, while
		 * the audmux API expects it starts at 0.
		 */
		int_port--;
		ext_port--;

		eukrea_tlv320_dai.cpus->of_node = ssi_np;
		eukrea_tlv320_dai.platforms->of_node = ssi_np;
	} else {
		eukrea_tlv320_dai.cpus->dai_name = "imx-ssi.0";
		eukrea_tlv320_dai.platforms->name = "imx-ssi.0";
		eukrea_tlv320_dai.codecs->name = "tlv320aic23-codec.0-001a";
		eukrea_tlv320.name = "cpuimx-audio";
	}

	if (of_machine_is_compatible("eukrea,cpuimx27") ||
	    (tmp_np = of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux"))) {
		imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
			IMX_AUDMUX_V1_PCR_SYN |
			IMX_AUDMUX_V1_PCR_TFSDIR |
			IMX_AUDMUX_V1_PCR_TCLKDIR |
			IMX_AUDMUX_V1_PCR_RFSDIR |
			IMX_AUDMUX_V1_PCR_RCLKDIR |
			IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
			IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
			IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
		);
		imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
			IMX_AUDMUX_V1_PCR_SYN |
			IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
		);
		of_node_put(tmp_np);
	} else if (of_machine_is_compatible("eukrea,cpuimx25") ||
		   of_machine_is_compatible("eukrea,cpuimx35") ||
		   of_machine_is_compatible("eukrea,cpuimx51") ||
		   (tmp_np = of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux"))) {
		if (!np)
			ext_port = of_machine_is_compatible("eukrea,cpuimx25") ?
				4 : 3;

		imx_audmux_v2_configure_port(int_port,
			IMX_AUDMUX_V2_PTCR_SYN |
			IMX_AUDMUX_V2_PTCR_TFSDIR |
			IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
			IMX_AUDMUX_V2_PTCR_TCLKDIR |
			IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
			IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
		);
		imx_audmux_v2_configure_port(ext_port,
			IMX_AUDMUX_V2_PTCR_SYN,
			IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
		);
		of_node_put(tmp_np);
	} else {
		if (np) {

Annotation

Implementation Notes