ASoC: fsl: add imx-es8328 machine driver
authorSean Cross <xobs@kosagi.com>
Thu, 31 Jul 2014 02:43:37 +0000 (10:43 +0800)
committerMark Brown <broonie@linaro.org>
Sat, 16 Aug 2014 22:18:07 +0000 (17:18 -0500)
This adds an initial machine driver for the ES8328 audio codec on Freescale
boards.  The driver supports headphones and an audio regulator for an onboard
speaker amp.

Signed-off-by: Sean Cross <xobs@kosagi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Documentation/devicetree/bindings/sound/imx-audio-es8328.txt [new file with mode: 0644]
sound/soc/fsl/Kconfig
sound/soc/fsl/Makefile
sound/soc/fsl/imx-es8328.c [new file with mode: 0644]

diff --git a/Documentation/devicetree/bindings/sound/imx-audio-es8328.txt b/Documentation/devicetree/bindings/sound/imx-audio-es8328.txt
new file mode 100644 (file)
index 0000000..07b68ab
--- /dev/null
@@ -0,0 +1,60 @@
+Freescale i.MX audio complex with ES8328 codec
+
+Required properties:
+- compatible       : "fsl,imx-audio-es8328"
+- model            : The user-visible name of this sound complex
+- ssi-controller   : The phandle of the i.MX SSI controller
+- jack-gpio        : Optional GPIO for headphone jack
+- audio-amp-supply : Power regulator for speaker amps
+- audio-codec      : The phandle of the ES8328 audio codec
+- audio-routing    : A list of the connections between audio components.
+                     Each entry is a pair of strings, the first being the
+                    connection's sink, the second being the connection's
+                    source. Valid names could be power supplies, ES8328
+                    pins, and the jacks on the board:
+
+                       Power supplies:
+                          * audio-amp
+
+                       ES8328 pins:
+                          * LOUT1
+                          * LOUT2
+                          * ROUT1
+                          * ROUT2
+                          * LINPUT1
+                          * LINPUT2
+                          * RINPUT1
+                          * RINPUT2
+                          * Mic PGA
+
+                       Board connectors:
+                          * Headphone
+                          * Speaker
+                          * Mic Jack
+- mux-int-port     : The internal port of the i.MX audio muxer (AUDMUX)
+- mux-ext-port     : The external port of the i.MX audio muxer (AUDMIX)
+
+Note: The AUDMUX port numbering should start at 1, which is consistent with
+hardware manual.
+
+Example:
+
+sound {
+       compatible = "fsl,imx-audio-es8328";
+       model = "imx-audio-es8328";
+       ssi-controller = <&ssi1>;
+       audio-codec = <&codec>;
+       jack-gpio = <&gpio5 15 0>;
+       audio-amp-supply = <&reg_audio_amp>;
+       audio-routing =
+               "Speaker", "LOUT2",
+               "Speaker", "ROUT2",
+               "Speaker", "audio-amp",
+               "Headphone", "ROUT1",
+               "Headphone", "LOUT1",
+               "LINPUT1", "Mic Jack",
+               "RINPUT1", "Mic Jack",
+               "Mic Jack", "Mic Bias";
+       mux-int-port = <1>;
+       mux-ext-port = <3>;
+};
index 2b99a9e868993fb587e439fe704981b5bd26005a..fa90340dc13a0d3ec7ead46bfddd5c3cce3b78e1 100644 (file)
@@ -257,6 +257,20 @@ config SND_SOC_IMX_WM8962
          Say Y if you want to add support for SoC audio on an i.MX board with
          a wm8962 codec.
 
+config SND_SOC_IMX_ES8328
+       tristate "SoC Audio support for i.MX boards with the ES8328 codec"
+       depends on OF && (I2C || SPI)
+       select SND_SOC_ES8328_I2C if I2C
+       select SND_SOC_ES8328_SPI if SPI_MASTER
+       select SND_SOC_IMX_PCM_DMA
+       select SND_SOC_IMX_AUDMUX
+       select SND_SOC_FSL_SSI
+       select SND_SOC_FSL_UTILS
+       select SND_SOC_IMX_PCM_FIQ
+       help
+         Say Y if you want to add support for the ES8328 audio codec connected
+         via SSI/I2S over either SPI or I2C.
+
 config SND_SOC_IMX_SGTL5000
        tristate "SoC Audio support for i.MX boards with sgtl5000"
        depends on OF && I2C
index 8f6d84efa973326b1075972176e88eab404b3d22..d28dc25c9375fd813e0f14d2c48a5d4d0e08576c 100644 (file)
@@ -52,6 +52,7 @@ snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o
 snd-soc-phycore-ac97-objs := phycore-ac97.o
 snd-soc-mx27vis-aic32x4-objs := mx27vis-aic32x4.o
 snd-soc-wm1133-ev1-objs := wm1133-ev1.o
+snd-soc-imx-es8328-objs := imx-es8328.o
 snd-soc-imx-sgtl5000-objs := imx-sgtl5000.o
 snd-soc-imx-wm8962-objs := imx-wm8962.o
 snd-soc-imx-spdif-objs := imx-spdif.o
@@ -61,6 +62,7 @@ obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o
 obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o
 obj-$(CONFIG_SND_SOC_MX27VIS_AIC32X4) += snd-soc-mx27vis-aic32x4.o
 obj-$(CONFIG_SND_MXC_SOC_WM1133_EV1) += snd-soc-wm1133-ev1.o
+obj-$(CONFIG_SND_SOC_IMX_ES8328) += snd-soc-imx-es8328.o
 obj-$(CONFIG_SND_SOC_IMX_SGTL5000) += snd-soc-imx-sgtl5000.o
 obj-$(CONFIG_SND_SOC_IMX_WM8962) += snd-soc-imx-wm8962.o
 obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o
diff --git a/sound/soc/fsl/imx-es8328.c b/sound/soc/fsl/imx-es8328.c
new file mode 100644 (file)
index 0000000..653e66d
--- /dev/null
@@ -0,0 +1,232 @@
+/*
+ * 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, *codec_np;
+       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);
+               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");