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233 lines
6.2 KiB
233 lines
6.2 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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// |
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// eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode |
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// |
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// Copyright 2010 Eric Bénard, Eukréa Electromatique <[email protected]> |
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// |
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// based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c |
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// which is Copyright 2009 Simtec Electronics |
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// and on sound/soc/imx/phycore-ac97.c which is |
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// Copyright 2009 Sascha Hauer, Pengutronix <[email protected]> |
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#include <linux/errno.h> |
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#include <linux/module.h> |
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#include <linux/moduleparam.h> |
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#include <linux/of.h> |
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#include <linux/of_platform.h> |
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#include <linux/device.h> |
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#include <linux/i2c.h> |
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#include <sound/core.h> |
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#include <sound/pcm.h> |
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#include <sound/soc.h> |
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#include <asm/mach-types.h> |
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#include "../codecs/tlv320aic23.h" |
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#include "imx-ssi.h" |
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#include "imx-audmux.h" |
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#define CODEC_CLOCK 12000000 |
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static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params) |
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{ |
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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int ret; |
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ret = snd_soc_dai_set_sysclk(codec_dai, 0, |
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CODEC_CLOCK, SND_SOC_CLOCK_OUT); |
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if (ret) { |
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dev_err(cpu_dai->dev, |
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"Failed to set the codec sysclk.\n"); |
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return ret; |
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} |
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snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0); |
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ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, |
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SND_SOC_CLOCK_IN); |
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/* fsl_ssi lacks the set_sysclk ops */ |
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if (ret && ret != -EINVAL) { |
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dev_err(cpu_dai->dev, |
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"Can't set the IMX_SSP_SYS_CLK CPU system clock.\n"); |
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return ret; |
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} |
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return 0; |
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} |
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static const struct snd_soc_ops eukrea_tlv320_snd_ops = { |
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.hw_params = eukrea_tlv320_hw_params, |
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}; |
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SND_SOC_DAILINK_DEFS(hifi, |
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DAILINK_COMP_ARRAY(COMP_EMPTY()), |
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DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic23-hifi")), |
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DAILINK_COMP_ARRAY(COMP_EMPTY())); |
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static struct snd_soc_dai_link eukrea_tlv320_dai = { |
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.name = "tlv320aic23", |
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.stream_name = "TLV320AIC23", |
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBM_CFM, |
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.ops = &eukrea_tlv320_snd_ops, |
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SND_SOC_DAILINK_REG(hifi), |
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}; |
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static struct snd_soc_card eukrea_tlv320 = { |
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.owner = THIS_MODULE, |
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.dai_link = &eukrea_tlv320_dai, |
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.num_links = 1, |
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}; |
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static int eukrea_tlv320_probe(struct platform_device *pdev) |
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{ |
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int ret; |
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int int_port = 0, ext_port; |
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struct device_node *np = pdev->dev.of_node; |
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struct device_node *ssi_np = NULL, *codec_np = NULL; |
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eukrea_tlv320.dev = &pdev->dev; |
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if (np) { |
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ret = snd_soc_of_parse_card_name(&eukrea_tlv320, |
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"eukrea,model"); |
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if (ret) { |
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dev_err(&pdev->dev, |
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"eukrea,model node missing or invalid.\n"); |
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goto err; |
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} |
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ssi_np = of_parse_phandle(pdev->dev.of_node, |
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"ssi-controller", 0); |
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if (!ssi_np) { |
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dev_err(&pdev->dev, |
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"ssi-controller missing or invalid.\n"); |
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ret = -ENODEV; |
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goto err; |
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} |
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codec_np = of_parse_phandle(ssi_np, "codec-handle", 0); |
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if (codec_np) |
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eukrea_tlv320_dai.codecs->of_node = codec_np; |
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else |
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dev_err(&pdev->dev, "codec-handle node missing or invalid.\n"); |
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ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port); |
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if (ret) { |
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dev_err(&pdev->dev, |
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"fsl,mux-int-port node missing or invalid.\n"); |
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goto err; |
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} |
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ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port); |
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if (ret) { |
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dev_err(&pdev->dev, |
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"fsl,mux-ext-port node missing or invalid.\n"); |
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goto err; |
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} |
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/* |
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* The port numbering in the hardware manual starts at 1, while |
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* the audmux API expects it starts at 0. |
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*/ |
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int_port--; |
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ext_port--; |
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eukrea_tlv320_dai.cpus->of_node = ssi_np; |
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eukrea_tlv320_dai.platforms->of_node = ssi_np; |
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} else { |
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eukrea_tlv320_dai.cpus->dai_name = "imx-ssi.0"; |
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eukrea_tlv320_dai.platforms->name = "imx-ssi.0"; |
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eukrea_tlv320_dai.codecs->name = "tlv320aic23-codec.0-001a"; |
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eukrea_tlv320.name = "cpuimx-audio"; |
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} |
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if (machine_is_eukrea_cpuimx27() || |
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of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) { |
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imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0, |
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IMX_AUDMUX_V1_PCR_SYN | |
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IMX_AUDMUX_V1_PCR_TFSDIR | |
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IMX_AUDMUX_V1_PCR_TCLKDIR | |
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IMX_AUDMUX_V1_PCR_RFSDIR | |
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IMX_AUDMUX_V1_PCR_RCLKDIR | |
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IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | |
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IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | |
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IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
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); |
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imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4, |
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IMX_AUDMUX_V1_PCR_SYN | |
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IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0) |
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); |
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} else if (machine_is_eukrea_cpuimx25sd() || |
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machine_is_eukrea_cpuimx35sd() || |
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machine_is_eukrea_cpuimx51sd() || |
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of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) { |
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if (!np) |
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ext_port = machine_is_eukrea_cpuimx25sd() ? |
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4 : 3; |
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imx_audmux_v2_configure_port(int_port, |
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IMX_AUDMUX_V2_PTCR_SYN | |
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IMX_AUDMUX_V2_PTCR_TFSDIR | |
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IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | |
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IMX_AUDMUX_V2_PTCR_TCLKDIR | |
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IMX_AUDMUX_V2_PTCR_TCSEL(ext_port), |
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IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port) |
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); |
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imx_audmux_v2_configure_port(ext_port, |
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IMX_AUDMUX_V2_PTCR_SYN, |
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IMX_AUDMUX_V2_PDCR_RXDSEL(int_port) |
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); |
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} else { |
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if (np) { |
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/* The eukrea,asoc-tlv320 driver was explicitly |
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* requested (through the device tree). |
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*/ |
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dev_err(&pdev->dev, |
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"Missing or invalid audmux DT node.\n"); |
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return -ENODEV; |
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} else { |
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/* Return happy. |
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* We might run on a totally different machine. |
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*/ |
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return 0; |
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} |
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} |
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ret = snd_soc_register_card(&eukrea_tlv320); |
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err: |
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if (ret) |
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dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); |
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of_node_put(ssi_np); |
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return ret; |
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} |
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static int eukrea_tlv320_remove(struct platform_device *pdev) |
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{ |
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snd_soc_unregister_card(&eukrea_tlv320); |
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return 0; |
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} |
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static const struct of_device_id imx_tlv320_dt_ids[] = { |
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{ .compatible = "eukrea,asoc-tlv320"}, |
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{ /* sentinel */ } |
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}; |
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MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids); |
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static struct platform_driver eukrea_tlv320_driver = { |
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.driver = { |
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.name = "eukrea_tlv320", |
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.of_match_table = imx_tlv320_dt_ids, |
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}, |
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.probe = eukrea_tlv320_probe, |
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.remove = eukrea_tlv320_remove, |
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}; |
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module_platform_driver(eukrea_tlv320_driver); |
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MODULE_AUTHOR("Eric Bénard <[email protected]>"); |
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MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("platform:eukrea_tlv320");
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