| /* |
| * eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode |
| * |
| * Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com> |
| * |
| * 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 <s.hauer@pengutronix.de> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| */ |
| |
| #include <linux/errno.h> |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/of.h> |
| #include <linux/of_platform.h> |
| #include <linux/device.h> |
| #include <linux/i2c.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/soc.h> |
| #include <asm/mach-types.h> |
| |
| #include "../codecs/tlv320aic23.h" |
| #include "imx-ssi.h" |
| #include "fsl_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, |
| }; |
| |
| static struct snd_soc_dai_link eukrea_tlv320_dai = { |
| .name = "tlv320aic23", |
| .stream_name = "TLV320AIC23", |
| .codec_dai_name = "tlv320aic23-hifi", |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBM_CFM, |
| .ops = &eukrea_tlv320_snd_ops, |
| }; |
| |
| 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.codec_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.cpu_of_node = ssi_np; |
| eukrea_tlv320_dai.platform_of_node = ssi_np; |
| } else { |
| eukrea_tlv320_dai.cpu_dai_name = "imx-ssi.0"; |
| eukrea_tlv320_dai.platform_name = "imx-ssi.0"; |
| eukrea_tlv320_dai.codec_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 <eric@eukrea.com>"); |
| MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:eukrea_tlv320"); |