1 files changed, 205 insertions, 0 deletions
diff --git a/sound/soc/mxs/mxs-sgtl5000.c b/sound/soc/mxs/mxs-sgtl5000.c
new file mode 100644
index 000000000..c40e0ab49
--- /dev/null
+++ b/sound/soc/mxs/mxs-sgtl5000.c
@@ -0,0 +1,205 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include <sound/soc-dapm.h>
+
+#include "../codecs/sgtl5000.h"
+#include "mxs-saif.h"
+
+static int mxs_sgtl5000_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;
+	unsigned int rate = params_rate(params);
+	u32 mclk;
+	int ret;
+
+	/* sgtl5000 does not support 512*rate when in 96000 fs */
+	switch (rate) {
+	case 96000:
+		mclk = 256 * rate;
+		break;
+	default:
+		mclk = 512 * rate;
+		break;
+	}
+
+	/* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */
+	ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0);
+	if (ret) {
+		dev_err(codec_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
+			mclk / 1000000, mclk / 1000 % 1000);
+		return ret;
+	}
+
+	/* The SAIF MCLK should be the same as SGTL5000_SYSCLK */
+	ret = snd_soc_dai_set_sysclk(cpu_dai, MXS_SAIF_MCLK, mclk, 0);
+	if (ret) {
+		dev_err(cpu_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
+			mclk / 1000000, mclk / 1000 % 1000);
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_ops mxs_sgtl5000_hifi_ops = {
+	.hw_params = mxs_sgtl5000_hw_params,
+};
+
+#define MXS_SGTL5000_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
+	SND_SOC_DAIFMT_CBS_CFS)
+
+static struct snd_soc_dai_link mxs_sgtl5000_dai[] = {
+	{
+		.name		= "HiFi Tx",
+		.stream_name	= "HiFi Playback",
+		.codec_dai_name	= "sgtl5000",
+		.dai_fmt	= MXS_SGTL5000_DAI_FMT,
+		.ops		= &mxs_sgtl5000_hifi_ops,
+		.playback_only	= true,
+	}, {
+		.name		= "HiFi Rx",
+		.stream_name	= "HiFi Capture",
+		.codec_dai_name	= "sgtl5000",
+		.dai_fmt	= MXS_SGTL5000_DAI_FMT,
+		.ops		= &mxs_sgtl5000_hifi_ops,
+		.capture_only	= true,
+	},
+};
+
+static const struct snd_soc_dapm_widget mxs_sgtl5000_dapm_widgets[] = {
+	SND_SOC_DAPM_MIC("Mic Jack", NULL),
+	SND_SOC_DAPM_LINE("Line In Jack", NULL),
+	SND_SOC_DAPM_HP("Headphone Jack", NULL),
+	SND_SOC_DAPM_SPK("Line Out Jack", NULL),
+	SND_SOC_DAPM_SPK("Ext Spk", NULL),
+};
+
+static struct snd_soc_card mxs_sgtl5000 = {
+	.name		= "mxs_sgtl5000",
+	.owner		= THIS_MODULE,
+	.dai_link	= mxs_sgtl5000_dai,
+	.num_links	= ARRAY_SIZE(mxs_sgtl5000_dai),
+};
+
+static int mxs_sgtl5000_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &mxs_sgtl5000;
+	int ret, i;
+	struct device_node *np = pdev->dev.of_node;
+	struct device_node *saif_np[2], *codec_np;
+
+	saif_np[0] = of_parse_phandle(np, "saif-controllers", 0);
+	saif_np[1] = of_parse_phandle(np, "saif-controllers", 1);
+	codec_np = of_parse_phandle(np, "audio-codec", 0);
+	if (!saif_np[0] || !saif_np[1] || !codec_np) {
+		dev_err(&pdev->dev, "phandle missing or invalid\n");
+		of_node_put(codec_np);
+		of_node_put(saif_np[0]);
+		of_node_put(saif_np[1]);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < 2; i++) {
+		mxs_sgtl5000_dai[i].codec_name = NULL;
+		mxs_sgtl5000_dai[i].codec_of_node = codec_np;
+		mxs_sgtl5000_dai[i].cpu_dai_name = NULL;
+		mxs_sgtl5000_dai[i].cpu_of_node = saif_np[i];
+		mxs_sgtl5000_dai[i].platform_name = NULL;
+		mxs_sgtl5000_dai[i].platform_of_node = saif_np[i];
+	}
+
+	of_node_put(codec_np);
+	of_node_put(saif_np[0]);
+	of_node_put(saif_np[1]);
+
+	/*
+	 * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).
+	 * The Sgtl5000 sysclk is derived from saif0 mclk and it's range
+	 * should be >= 8MHz and <= 27M.
+	 */
+	ret = mxs_saif_get_mclk(0, 44100 * 256, 44100);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to get mclk\n");
+		return ret;
+	}
+
+	card->dev = &pdev->dev;
+
+	if (of_find_property(np, "audio-routing", NULL)) {
+		card->dapm_widgets = mxs_sgtl5000_dapm_widgets;
+		card->num_dapm_widgets = ARRAY_SIZE(mxs_sgtl5000_dapm_widgets);
+
+		ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
+		if (ret) {
+			dev_err(&pdev->dev, "failed to parse audio-routing (%d)\n",
+				ret);
+			return ret;
+		}
+	}
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret) {
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
+				ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int mxs_sgtl5000_remove(struct platform_device *pdev)
+{
+	mxs_saif_put_mclk(0);
+
+	return 0;
+}
+
+static const struct of_device_id mxs_sgtl5000_dt_ids[] = {
+	{ .compatible = "fsl,mxs-audio-sgtl5000", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids);
+
+static struct platform_driver mxs_sgtl5000_audio_driver = {
+	.driver = {
+		.name = "mxs-sgtl5000",
+		.of_match_table = mxs_sgtl5000_dt_ids,
+	},
+	.probe = mxs_sgtl5000_probe,
+	.remove = mxs_sgtl5000_remove,
+};
+
+module_platform_driver(mxs_sgtl5000_audio_driver);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("MXS ALSA SoC Machine driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:mxs-sgtl5000");