[SOUND][TLV320] add seco-tlv320 driver for ssi interface

sound/soc/fsl/Makefile

@@ -83,6 +83,7 @@ obj-$(CONFIG_SND_SOC_IMX_PCM_RPMSG) += imx-pcm-rpmsg.o
 obj-$(CONFIG_SND_SOC_IMX_HDMI_DMA) += imx-hdmi-dma.o hdmi_pcm.o
 
 # i.MX Machine Support
+snd-soc-seco-tlv320-objs := seco-tlv320.o
 snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o
 snd-soc-phycore-ac97-objs := phycore-ac97.o
 snd-soc-mx27vis-aic32x4-objs := mx27vis-aic32x4.o
@@ -107,6 +108,7 @@ snd-soc-imx-si476x-objs := imx-si476x.o
 snd-soc-imx-hdmi-objs := imx-hdmi.o
 snd-soc-imx-cdnhdmi-objs := imx-cdnhdmi.o
 
+obj-$(CONFIG_SND_SOC_SECO_TLV320) += snd-soc-seco-tlv320.o
 obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o
 obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o
 obj-$(CONFIG_SND_SOC_MX27VIS_AIC32X4) += snd-soc-mx27vis-aic32x4.o

sound/soc/fsl/seco-tlv320.c

+/*
+ * seco-tlv320.c  --  SoC audio for seco_cpuimxXX in I2S mode
+ *
+ * Copyright 2017 Michele Cirinei, Seco srl <michele.cirinei@seco.com>
+ *
+ * based on sound/soc/fsl/eukrea-tlv320.c which is
+ * Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>
+ *
+ *  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 <linux/delay.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+#include "../codecs/tlv320aic32x4.h"
+#include "imx-ssi.h"
+#include "imx-audmux.h"
+
+#define CODEC_CLOCK 24000000
+
+static int seco_tlv320_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	struct snd_soc_card *card = rtd->card;
+    struct device *dev = card->dev;
+	unsigned int fmt;
+	int ret = 0;
+
+	fmt =   SND_SOC_DAIFMT_I2S |
+			SND_SOC_DAIFMT_NB_NF |
+			SND_SOC_DAIFMT_CBS_CFS;
+
+	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
+	if (ret) {
+			dev_err(dev, "failed to set cpu dai fmt: %d\n", ret);
+			return ret;
+	}
+
+	ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0, 2,
+									params_physical_width(params));
+	if (ret) {
+			dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret);
+			return ret;
+	}
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN);
+	return ret;
+	
+}
+
+static struct snd_soc_ops seco_tlv320_snd_ops = {
+	.hw_params	= seco_tlv320_hw_params,
+};
+
+static struct snd_soc_dai_link seco_tlv320_dai = {
+	.name		= "tlv320aic32x4",
+	.stream_name	= "TLV320AIC32X4",
+	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+			  SND_SOC_DAIFMT_CBS_CFS,
+	.ops		= &seco_tlv320_snd_ops,
+};
+
+static struct snd_soc_card seco_tlv320 = {
+	.owner		= THIS_MODULE,
+	.dai_link	= &seco_tlv320_dai,
+	.num_links	= 1,
+};
+
+static int seco_tlv320_audmux_init(struct device_node *np,
+				    struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	u32 int_ptcr = 0, ext_ptcr = 0;
+	int int_port, ext_port;
+	int ret;
+
+	ret = of_property_read_u32(np, "mux-int-port", &int_port);
+	if (ret) {
+		dev_err(dev, "mux-int-port missing or invalid\n");
+		return ret;
+	}
+	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
+	if (ret) {
+		dev_err(dev, "mux-ext-port missing or invalid\n");
+		return ret;
+	}
+
+	/*
+	 * The port numbering in the hardware manual starts at 1, while
+	 * the AUDMUX API expects it starts at 0.
+	 */
+	int_port--;
+	ext_port--;
+
+	ext_ptcr = 
+        IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
+        IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
+        IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
+        IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
+        IMX_AUDMUX_V2_PTCR_RFSDIR |
+        IMX_AUDMUX_V2_PTCR_RCLKDIR |
+        IMX_AUDMUX_V2_PTCR_TFSDIR |
+        IMX_AUDMUX_V2_PTCR_TCLKDIR;
+
+	/* Asynchronous mode can not be set along with RCLKDIR */
+	ret = imx_audmux_v2_configure_port(int_port, 0,
+					   IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
+	if (ret) {
+		dev_err(dev, "audmux internal port setup failed\n");
+		return ret;
+	}
+
+	ret = imx_audmux_v2_configure_port(int_port, int_ptcr,
+					   IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
+	if (ret) {
+		dev_err(dev, "audmux internal port setup failed\n");
+		return ret;
+	}
+
+	ret = imx_audmux_v2_configure_port(ext_port, 0,
+					   IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
+	if (ret) {
+		dev_err(dev, "audmux external port setup failed\n");
+		return ret;
+	}
+
+	ret = imx_audmux_v2_configure_port(ext_port, ext_ptcr,
+					   IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
+	if (ret) {
+		dev_err(dev, "audmux external port setup failed\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int seco_tlv320_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct device_node *cpu_np = NULL, *codec_np = NULL;
+    struct platform_device *cpu_pdev;
+    struct i2c_client *codec_dev;
+	struct snd_soc_dai_link_component *comp;
+    bool pmicbias_en = false;
+    
+	seco_tlv320.dev = &pdev->dev;
+    cpu_np = of_parse_phandle(pdev->dev.of_node, "cpu-dai", 0);
+    if (!cpu_np) {
+        dev_err(&pdev->dev, "cpu dai phandle missing or invalid\n");
+        ret = -EINVAL;
+        goto err;
+    }
+    codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
+    if (!codec_np) {
+        dev_err(&pdev->dev, "phandle missing or invalid\n");
+        ret = -EINVAL;
+        goto err;
+    }
+    cpu_pdev = of_find_device_by_node(cpu_np);
+    if (!cpu_pdev) {
+        dev_err(&pdev->dev, "failed to find SAI platform device\n");
+        ret = -EINVAL;
+        goto err;
+    }
+    codec_dev = of_find_i2c_device_by_node(codec_np);
+    if (!codec_dev || !codec_dev->dev.driver) {
+        dev_err(&pdev->dev, "failed to find codec platform device\n");
+        ret = -EINVAL;
+        goto err;
+    }
+    pmicbias_en = of_property_read_bool(pdev->dev.of_node, "enable-mic-bias");
+    ret=seco_tlv320_audmux_init(pdev->dev.of_node, pdev);
+    if(ret)
+        goto err;
+
+        
+	comp = devm_kzalloc(&pdev->dev, 3 * sizeof(*comp), GFP_KERNEL);
+	if (!comp) {
+		ret = -ENOMEM;
+		goto err;
+	}
+	seco_tlv320_dai.cpus		= &comp[0];
+	seco_tlv320_dai.codecs	= &comp[1];
+	seco_tlv320_dai.platforms	= &comp[2];
+
+	seco_tlv320_dai.num_cpus	= 1;
+	seco_tlv320_dai.num_codecs	= 1;
+	seco_tlv320_dai.num_platforms	= 1;
+
+	seco_tlv320_dai.name =  "seco-tlv320";
+	seco_tlv320_dai.stream_name = "seco-tlv320-analog";
+	seco_tlv320_dai.codecs->dai_name = "tlv320aic32x4-hifi";
+
+    seco_tlv320_dai.cpus->of_node = cpu_np;
+	seco_tlv320_dai.platforms->of_node = cpu_np;
+    seco_tlv320_dai.codecs->of_node	= codec_np;
+    ret = snd_soc_of_parse_card_name(&seco_tlv320,"model");
+	ret = snd_soc_register_card(&seco_tlv320);
+    if(pmicbias_en){
+        i2c_smbus_write_byte_data(codec_dev, 0x00, 0x01);
+        mdelay(20);
+        i2c_smbus_write_byte_data(codec_dev, 0x33, 0x78);
+        dev_err(&pdev->dev, "tlv320aic32x4: Mic-bias-enabled\n");
+    }
+
+err:
+	if (ret)
+		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+    if (cpu_np)
+		of_node_put(cpu_np);
+	if (codec_np)
+		of_node_put(codec_np);
+	if (comp)
+		kfree (comp);
+	return ret;
+}
+
+static int seco_tlv320_remove(struct platform_device *pdev)
+{
+	snd_soc_unregister_card(&seco_tlv320);
+
+	return 0;
+}
+
+static const struct of_device_id imx_tlv320_dt_ids[] = {
+	{ .compatible = "seco,asoc-tlv320"},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids);
+
+static struct platform_driver seco_tlv320_driver = {
+	.driver = {
+		.name = "seco_tlv320",
+		.of_match_table = imx_tlv320_dt_ids,
+	},
+	.probe = seco_tlv320_probe,
+	.remove = seco_tlv320_remove,
+};
+
+module_platform_driver(seco_tlv320_driver);
+
+MODULE_AUTHOR("Michele Cirinei <michele.cirinei@seco.com>");
+MODULE_DESCRIPTION("AIC32x4 ALSA SoC driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:seco_tlv320");
+