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Diffstat (limited to 'sound/soc/fsl/imx-wm8524.c')
-rw-r--r--sound/soc/fsl/imx-wm8524.c315
1 files changed, 315 insertions, 0 deletions
diff --git a/sound/soc/fsl/imx-wm8524.c b/sound/soc/fsl/imx-wm8524.c
new file mode 100644
index 000000000000..f28e92ca64ba
--- /dev/null
+++ b/sound/soc/fsl/imx-wm8524.c
@@ -0,0 +1,315 @@
+/*
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/of_gpio.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/clk.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include <sound/control.h>
+#include <sound/pcm_params.h>
+#include <sound/soc-dapm.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/mfd/syscon.h>
+
+struct imx_priv {
+ struct snd_soc_dai_link dai[3];
+ struct platform_device *pdev;
+ struct platform_device *asrc_pdev;
+ struct snd_soc_card card;
+ struct clk *codec_clk;
+ unsigned int clk_frequency;
+ u32 asrc_rate;
+ u32 asrc_format;
+};
+
+static const struct snd_soc_dapm_widget imx_wm8524_dapm_widgets[] = {
+ SND_SOC_DAPM_LINE("Line Out Jack", NULL),
+ SND_SOC_DAPM_LINE("Line In Jack", NULL),
+};
+
+static int imx_hifi_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 *cpu_dai = rtd->cpu_dai;
+ 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;
+ }
+
+ return ret;
+}
+
+static struct snd_soc_ops imx_hifi_ops = {
+ .hw_params = imx_hifi_hw_params,
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+ {"Playback", NULL, "CPU-Playback"},
+ {"CPU-Playback", NULL, "ASRC-Playback"},
+};
+
+static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_card *card = rtd->card;
+ struct imx_priv *priv = snd_soc_card_get_drvdata(card);
+ struct snd_interval *rate;
+ struct snd_mask *mask;
+
+ if (!priv->asrc_pdev)
+ return -EINVAL;
+
+ rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+ rate->max = priv->asrc_rate;
+ rate->min = priv->asrc_rate;
+
+ mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ snd_mask_none(mask);
+ snd_mask_set(mask, priv->asrc_format);
+
+ return 0;
+}
+
+static int imx_wm8524_late_probe(struct snd_soc_card *card)
+{
+ struct snd_soc_pcm_runtime *rtd = list_first_entry(
+ &card->rtd_list, struct snd_soc_pcm_runtime, list);
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct imx_priv *priv = snd_soc_card_get_drvdata(card);
+ int ret;
+
+ priv->clk_frequency = clk_get_rate(priv->codec_clk);
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, 0, priv->clk_frequency,
+ SND_SOC_CLOCK_IN);
+
+ return 0;
+}
+
+static int imx_wm8524_probe(struct platform_device *pdev)
+{
+ struct device_node *cpu_np, *codec_np = NULL;
+ struct device_node *asrc_np = NULL;
+ struct platform_device *asrc_pdev = NULL;
+ struct platform_device *cpu_pdev;
+ struct imx_priv *priv;
+ struct platform_device *codec_pdev = NULL;
+ struct snd_soc_dai_link_component *dlc;
+ int ret;
+ u32 width;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->pdev = pdev;
+
+ dlc = devm_kzalloc(&pdev->dev, 9 * sizeof(*dlc), GFP_KERNEL);
+ if (!dlc)
+ return -ENOMEM;
+
+ cpu_np = of_parse_phandle(pdev->dev.of_node, "audio-cpu", 0);
+ if (!cpu_np) {
+ dev_err(&pdev->dev, "cpu dai phandle missing or invalid\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ 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 fail;
+ }
+
+ asrc_np = of_parse_phandle(pdev->dev.of_node, "asrc-controller", 0);
+ if (asrc_np) {
+ asrc_pdev = of_find_device_by_node(asrc_np);
+ priv->asrc_pdev = asrc_pdev;
+ }
+
+ 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 fail;
+ }
+
+ codec_pdev = of_find_device_by_node(codec_np);
+ if (!codec_pdev || !codec_pdev->dev.driver) {
+ dev_dbg(&pdev->dev, "failed to find codec platform device\n");
+ ret = -EPROBE_DEFER;
+ goto fail;
+ }
+
+ priv->codec_clk = devm_clk_get(&codec_pdev->dev, "mclk");
+ if (IS_ERR(priv->codec_clk)) {
+ ret = PTR_ERR(priv->codec_clk);
+ dev_err(&pdev->dev, "failed to get codec clk: %d\n", ret);
+ goto fail;
+ }
+
+ priv->dai[0].cpus = &dlc[0];
+ priv->dai[0].num_cpus = 1;
+ priv->dai[0].platforms = &dlc[1];
+ priv->dai[0].num_platforms = 1;
+ priv->dai[0].codecs = &dlc[2];
+ priv->dai[0].num_codecs = 1;
+
+ priv->dai[0].name = "HiFi";
+ priv->dai[0].stream_name = "HiFi";
+ priv->dai[0].codecs->dai_name = "wm8524-hifi",
+ priv->dai[0].ops = &imx_hifi_ops,
+ priv->dai[0].codecs->of_node = codec_np;
+ priv->dai[0].cpus->dai_name = dev_name(&cpu_pdev->dev);
+ priv->dai[0].platforms->of_node = cpu_np;
+ priv->dai[0].playback_only = 1;
+
+ priv->card.late_probe = imx_wm8524_late_probe;
+ priv->card.num_links = 1;
+ priv->card.dev = &pdev->dev;
+ priv->card.owner = THIS_MODULE;
+ priv->card.dapm_widgets = imx_wm8524_dapm_widgets;
+ priv->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8524_dapm_widgets);
+ priv->card.dai_link = priv->dai;
+ priv->card.dapm_routes = audio_map;
+ priv->card.num_dapm_routes = 1;
+
+ /*if there is no asrc controller, we only enable one device*/
+ if (asrc_pdev) {
+ priv->dai[1].cpus = &dlc[3];
+ priv->dai[1].num_cpus = 1;
+ priv->dai[1].platforms = &dlc[4];
+ priv->dai[1].num_platforms = 1;
+ priv->dai[1].codecs = &dlc[5];
+ priv->dai[1].num_codecs = 1;
+
+ priv->dai[2].cpus = &dlc[6];
+ priv->dai[2].num_cpus = 1;
+ priv->dai[2].platforms = &dlc[7];
+ priv->dai[2].num_platforms = 1;
+ priv->dai[2].codecs = &dlc[8];
+ priv->dai[2].num_codecs = 1;
+
+ priv->dai[1].name = "HiFi-ASRC-FE";
+ priv->dai[1].stream_name = "HiFi-ASRC-FE";
+ priv->dai[1].codecs->dai_name = "snd-soc-dummy-dai";
+ priv->dai[1].codecs->name = "snd-soc-dummy";
+ priv->dai[1].cpus->of_node = asrc_np;
+ priv->dai[1].platforms->of_node = asrc_np;
+ priv->dai[1].dynamic = 1;
+ priv->dai[1].dpcm_playback = 1;
+ priv->dai[1].dpcm_capture = 0;
+
+ priv->dai[2].name = "HiFi-ASRC-BE";
+ priv->dai[2].stream_name = "HiFi-ASRC-BE";
+ priv->dai[2].codecs->dai_name = "wm8524-hifi";
+ priv->dai[2].codecs->of_node = codec_np;
+ priv->dai[2].cpus->of_node = cpu_np;
+ priv->dai[2].platforms->name = "snd-soc-dummy";
+ priv->dai[2].no_pcm = 1;
+ priv->dai[2].dpcm_playback = 1;
+ priv->dai[2].dpcm_capture = 0;
+ priv->dai[2].ops = &imx_hifi_ops,
+ priv->dai[2].be_hw_params_fixup = be_hw_params_fixup,
+ priv->card.num_links = 3;
+ priv->card.dai_link = &priv->dai[0];
+ priv->card.num_dapm_routes += 1;
+
+ ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
+ &priv->asrc_rate);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to get output rate\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ ret = of_property_read_u32(asrc_np, "fsl,asrc-width", &width);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to get output rate\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ if (width == 24)
+ priv->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
+ else
+ priv->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
+ }
+
+ ret = snd_soc_of_parse_card_name(&priv->card, "model");
+ if (ret)
+ goto fail;
+
+ ret = snd_soc_of_parse_audio_routing(&priv->card, "audio-routing");
+ if (ret)
+ goto fail;
+
+ snd_soc_card_set_drvdata(&priv->card, priv);
+
+ ret = devm_snd_soc_register_card(&pdev->dev, &priv->card);
+ if (ret) {
+ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+ goto fail;
+ }
+
+ ret = 0;
+fail:
+ if (cpu_np)
+ of_node_put(cpu_np);
+ if (codec_np)
+ of_node_put(codec_np);
+
+ return ret;
+}
+
+static const struct of_device_id imx_wm8524_dt_ids[] = {
+ { .compatible = "fsl,imx-audio-wm8524", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx_wm8524_dt_ids);
+
+static struct platform_driver imx_wm8524_driver = {
+ .driver = {
+ .name = "imx-wm8524",
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = imx_wm8524_dt_ids,
+ },
+ .probe = imx_wm8524_probe,
+};
+module_platform_driver(imx_wm8524_driver);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("Freescale i.MX WM8524 ASoC machine driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:imx-wm8524");
generated by cgit v1.2.3 (git 2.0.4) at 2024-09-14 02:52:39 +0000