// SPDX-License-Identifier: GPL-2.0+ // // eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode // // Copyright 2010 Eric Bénard, Eukréa Electromatique // // based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c // which is Copyright 2009 Simtec Electronics // and on sound/soc/imx/phycore-ac97.c which is // Copyright 2009 Sascha Hauer, Pengutronix #include #include #include #include #include #include #include #include #include #include #include #include "../codecs/tlv320aic23.h" #include "imx-ssi.h" #include "imx-audmux.h" #define CODEC_CLOCK 12000000 static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->codec_dai; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int ret; ret = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_OUT); if (ret) { dev_err(cpu_dai->dev, "Failed to set the codec sysclk.\n"); return ret; } snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0); ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, SND_SOC_CLOCK_IN); /* fsl_ssi lacks the set_sysclk ops */ if (ret && ret != -EINVAL) { dev_err(cpu_dai->dev, "Can't set the IMX_SSP_SYS_CLK CPU system clock.\n"); return ret; } return 0; } static const struct snd_soc_ops eukrea_tlv320_snd_ops = { .hw_params = eukrea_tlv320_hw_params, }; SND_SOC_DAILINK_DEFS(hifi, DAILINK_COMP_ARRAY(COMP_EMPTY()), DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic23-hifi")), DAILINK_COMP_ARRAY(COMP_EMPTY())); static struct snd_soc_dai_link eukrea_tlv320_dai = { .name = "tlv320aic23", .stream_name = "TLV320AIC23", .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM, .ops = &eukrea_tlv320_snd_ops, SND_SOC_DAILINK_REG(hifi), }; static struct snd_soc_card eukrea_tlv320 = { .owner = THIS_MODULE, .dai_link = &eukrea_tlv320_dai, .num_links = 1, }; static int eukrea_tlv320_probe(struct platform_device *pdev) { int ret; int int_port = 0, ext_port; struct device_node *np = pdev->dev.of_node; struct device_node *ssi_np = NULL, *codec_np = NULL; eukrea_tlv320.dev = &pdev->dev; if (np) { ret = snd_soc_of_parse_card_name(&eukrea_tlv320, "eukrea,model"); 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 (machine_is_eukrea_cpuimx27() || 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) ); } else if (machine_is_eukrea_cpuimx25sd() || machine_is_eukrea_cpuimx35sd() || machine_is_eukrea_cpuimx51sd() || of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) { if (!np) ext_port = machine_is_eukrea_cpuimx25sd() ? 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) ); } else { if (np) { /* The eukrea,asoc-tlv320 driver was explicitly * requested (through the device tree). */ dev_err(&pdev->dev, "Missing or invalid audmux DT node.\n"); return -ENODEV; } else { /* Return happy. * We might run on a totally different machine. */ return 0; } } ret = snd_soc_register_card(&eukrea_tlv320); err: if (ret) dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); of_node_put(ssi_np); return ret; } static int eukrea_tlv320_remove(struct platform_device *pdev) { snd_soc_unregister_card(&eukrea_tlv320); return 0; } static const struct of_device_id imx_tlv320_dt_ids[] = { { .compatible = "eukrea,asoc-tlv320"}, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids); static struct platform_driver eukrea_tlv320_driver = { .driver = { .name = "eukrea_tlv320", .of_match_table = imx_tlv320_dt_ids, }, .probe = eukrea_tlv320_probe, .remove = eukrea_tlv320_remove, }; module_platform_driver(eukrea_tlv320_driver); MODULE_AUTHOR("Eric Bénard "); MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:eukrea_tlv320");