--- /dev/null
+/*
+ * 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 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 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");
+ 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;
+ platform_set_drvdata(pdev, card);
+
+ ret = snd_soc_register_card(card);
+ if (ret) {
+ 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)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+ mxs_saif_put_mclk(0);
+
+ snd_soc_unregister_card(card);
+
+ 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");
Code Review / kvmfornfv.git / blobdiff