235 lines
6.2 KiB
C
235 lines
6.2 KiB
C
/*
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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 <eric@eukrea.com>
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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 <s.hauer@pengutronix.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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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 = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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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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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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.codec_dai_name = "tlv320aic23-hifi",
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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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};
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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.codec_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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return ret;
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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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return ret;
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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.cpu_of_node = ssi_np;
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eukrea_tlv320_dai.platform_of_node = ssi_np;
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} else {
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eukrea_tlv320_dai.cpu_dai_name = "imx-ssi.0";
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eukrea_tlv320_dai.platform_name = "imx-ssi.0";
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eukrea_tlv320_dai.codec_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 <eric@eukrea.com>");
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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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