1 files changed, 233 insertions, 0 deletions

diff --git a/sound/soc/fsl/imx-es8328.c b/sound/soc/fsl/imx-es8328.c
new file mode 100644
index 000000000000..f8cf10e16ce9
--- /dev/null
+++ b/sound/soc/fsl/imx-es8328.c
@@ -0,0 +1,233 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright 2012 Linaro Ltd.
+ *
+ * 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/gpio.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/i2c.h>
+#include <linux/of_gpio.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include "imx-audmux.h"
+
+#define DAI_NAME_SIZE   32
+#define MUX_PORT_MAX    7
+
+struct imx_es8328_data {
+        struct device *dev;
+        struct snd_soc_dai_link dai;
+        struct snd_soc_card card;
+        char codec_dai_name[DAI_NAME_SIZE];
+        char platform_name[DAI_NAME_SIZE];
+        int jack_gpio;
+};
+
+static struct snd_soc_jack_gpio headset_jack_gpios[] = {
+        {
+                .gpio = -1,
+                .name = "headset-gpio",
+                .report = SND_JACK_HEADSET,
+                .invert = 0,
+                .debounce_time = 200,
+        },
+};
+
+static struct snd_soc_jack headset_jack;
+
+static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd)
+{
+        struct imx_es8328_data *data = container_of(rtd->card,
+                                        struct imx_es8328_data, card);
+        int ret = 0;
+
+        /* Headphone jack detection */
+        if (gpio_is_valid(data->jack_gpio)) {
+                ret = snd_soc_jack_new(rtd->codec, "Headphone",
+                                       SND_JACK_HEADPHONE | SND_JACK_BTN_0,
+                                       &headset_jack);
+                if (ret)
+                        return ret;
+
+                headset_jack_gpios[0].gpio = data->jack_gpio;
+                ret = snd_soc_jack_add_gpios(&headset_jack,
+                                             ARRAY_SIZE(headset_jack_gpios),
+                                             headset_jack_gpios);
+        }
+
+        return ret;
+}
+
+static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = {
+        SND_SOC_DAPM_MIC("Mic Jack", NULL),
+        SND_SOC_DAPM_HP("Headphone", NULL),
+        SND_SOC_DAPM_SPK("Speaker", NULL),
+        SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0),
+};
+
+static int imx_es8328_probe(struct platform_device *pdev)
+{
+        struct device_node *np = pdev->dev.of_node;
+        struct device_node *ssi_np = NULL, *codec_np = NULL;
+        struct platform_device *ssi_pdev;
+        struct imx_es8328_data *data;
+        u32 int_port, ext_port;
+        int ret;
+        struct device *dev = &pdev->dev;
+
+        ret = of_property_read_u32(np, "mux-int-port", &int_port);
+        if (ret) {
+                dev_err(dev, "mux-int-port missing or invalid\n");
+                goto fail;
+        }
+        if (int_port > MUX_PORT_MAX || int_port == 0) {
+                dev_err(dev, "mux-int-port: hardware only has %d mux ports\n",
+                        MUX_PORT_MAX);
+                goto fail;
+        }
+
+        ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
+        if (ret) {
+                dev_err(dev, "mux-ext-port missing or invalid\n");
+                goto fail;
+        }
+        if (ext_port > MUX_PORT_MAX || ext_port == 0) {
+                dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",
+                        MUX_PORT_MAX);
+                ret = -EINVAL;
+                goto fail;
+        }
+
+        /*
+         * The port numbering in the hardware manual starts at 1, while
+         * the audmux API expects it starts at 0.
+         */
+        int_port--;
+        ext_port--;
+        ret = imx_audmux_v2_configure_port(int_port,
+                        IMX_AUDMUX_V2_PTCR_SYN |
+                        IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
+                        IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
+                        IMX_AUDMUX_V2_PTCR_TFSDIR |
+                        IMX_AUDMUX_V2_PTCR_TCLKDIR,
+                        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,
+                        IMX_AUDMUX_V2_PTCR_SYN,
+                        IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
+        if (ret) {
+                dev_err(dev, "audmux external port setup failed\n");
+                return ret;
+        }
+
+        ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
+        codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
+        if (!ssi_np || !codec_np) {
+                dev_err(dev, "phandle missing or invalid\n");
+                ret = -EINVAL;
+                goto fail;
+        }
+
+        ssi_pdev = of_find_device_by_node(ssi_np);
+        if (!ssi_pdev) {
+                dev_err(dev, "failed to find SSI platform device\n");
+                ret = -EINVAL;
+                goto fail;
+        }
+
+        data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+        if (!data) {
+                ret = -ENOMEM;
+                goto fail;
+        }
+
+        data->dev = dev;
+
+        data->jack_gpio = of_get_named_gpio(pdev->dev.of_node, "jack-gpio", 0);
+
+        data->dai.name = "hifi";
+        data->dai.stream_name = "hifi";
+        data->dai.codec_dai_name = "es8328-hifi-analog";
+        data->dai.codec_of_node = codec_np;
+        data->dai.cpu_of_node = ssi_np;
+        data->dai.platform_of_node = ssi_np;
+        data->dai.init = &imx_es8328_dai_init;
+        data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+                            SND_SOC_DAIFMT_CBM_CFM;
+
+        data->card.dev = dev;
+        data->card.dapm_widgets = imx_es8328_dapm_widgets;
+        data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);
+        ret = snd_soc_of_parse_card_name(&data->card, "model");
+        if (ret) {
+                dev_err(dev, "Unable to parse card name\n");
+                goto fail;
+        }
+        ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
+        if (ret) {
+                dev_err(dev, "Unable to parse routing: %d\n", ret);
+                goto fail;
+        }
+        data->card.num_links = 1;
+        data->card.owner = THIS_MODULE;
+        data->card.dai_link = &data->dai;
+
+        ret = snd_soc_register_card(&data->card);
+        if (ret) {
+                dev_err(dev, "Unable to register: %d\n", ret);
+                goto fail;
+        }
+
+        platform_set_drvdata(pdev, data);
+fail:
+        of_node_put(ssi_np);
+        of_node_put(codec_np);
+
+        return ret;
+}
+
+static int imx_es8328_remove(struct platform_device *pdev)
+{
+        struct imx_es8328_data *data = platform_get_drvdata(pdev);
+
+        snd_soc_jack_free_gpios(&headset_jack, ARRAY_SIZE(headset_jack_gpios),
+                                headset_jack_gpios);
+
+        snd_soc_unregister_card(&data->card);
+
+        return 0;
+}
+
+static const struct of_device_id imx_es8328_dt_ids[] = {
+        { .compatible = "fsl,imx-audio-es8328", },
+        { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
+
+static struct platform_driver imx_es8328_driver = {
+        .driver = {
+                .name = "imx-es8328",
+                .of_match_table = imx_es8328_dt_ids,
+        },
+        .probe = imx_es8328_probe,
+        .remove = imx_es8328_remove,
+};
+module_platform_driver(imx_es8328_driver);
+
+MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
+MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:imx-audio-es8328");