Added IQaudIO Pi-Codec board support (#2969)

Add support for the IQaudIO Pi-Codec board.

Signed-off-by: Gordon <gordon@iqaudio.com>
Fixed 48k timing issue

ASoC: iqaudio-codec: use modern dai_link style

Signed-off-by: Hui Wang <hui.wang@canonical.com>

diff --git a/sound/soc/bcm/Kconfig b/sound/soc/bcm/Kconfig
index fde6b15..e6d1c6b 100644 (file)
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -104,6 +104,13 @@ config SND_BCM2708_SOC_JUSTBOOM_DIGI
        help
          Say Y or M if you want to add support for JustBoom Digi.
 
+config SND_BCM2708_SOC_IQAUDIO_CODEC
+       tristate "Support for IQaudIO-CODEC"
+       depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+       select SND_SOC_DA7213
+       help
+         Say Y or M if you want to add support for IQaudIO-CODEC.
+
 config SND_BCM2708_SOC_IQAUDIO_DAC
        tristate "Support for IQaudIO-DAC"
        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S

diff --git a/sound/soc/bcm/Makefile b/sound/soc/bcm/Makefile
index 66c62ed..e0e2645 100644 (file)
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -18,6 +18,7 @@ snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o
 snd-soc-justboom-dac-objs := justboom-dac.o
 snd-soc-rpi-cirrus-objs := rpi-cirrus.o
 snd-soc-rpi-proto-objs := rpi-proto.o
+snd-soc-iqaudio-codec-objs := iqaudio-codec.o
 snd-soc-iqaudio-dac-objs := iqaudio-dac.o
  snd-soc-i-sabre-q2m-objs := i-sabre-q2m.o
 snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
@@ -41,6 +42,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusa
 obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
 obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
 obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
+obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC) += snd-soc-iqaudio-codec.o
 obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
  obj-$(CONFIG_SND_BCM2708_SOC_I_SABRE_Q2M) += snd-soc-i-sabre-q2m.o
 obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o

diff --git a/sound/soc/bcm/iqaudio-codec.c b/sound/soc/bcm/iqaudio-codec.c
new file mode 100644 (file)
index 0000000..83f2dba
--- /dev/null
+++ b/sound/soc/bcm/iqaudio-codec.c
@@ -0,0 +1,274 @@
+/*
+ * ASoC Driver for IQaudIO Raspberry Pi Codec board
+ *
+ * Author:     Gordon Garrity <gordon@iqaudio.com>
+ *             (C) Copyright IQaudio Limited, 2017-2019
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/gpio/consumer.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include <linux/acpi.h>
+#include <linux/slab.h>
+#include "../codecs/da7213.h"
+
+static int pll_out = DA7213_PLL_FREQ_OUT_90316800;
+
+static int snd_rpi_iqaudio_pll_control(struct snd_soc_dapm_widget *w,
+                                      struct snd_kcontrol *k, int  event)
+{
+       int ret = 0;
+       struct snd_soc_dapm_context *dapm = w->dapm;
+       struct snd_soc_card *card = dapm->card;
+       struct snd_soc_pcm_runtime *rtd =
+               snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
+       struct snd_soc_dai *codec_dai = rtd->codec_dai;
+
+       if (SND_SOC_DAPM_EVENT_OFF(event)) {
+               ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_MCLK, 0,
+                                         0);
+               if (ret)
+                       dev_err(card->dev, "Failed to bypass PLL: %d\n", ret);
+               /* Allow PLL time to bypass */
+               msleep(100);
+       } else if (SND_SOC_DAPM_EVENT_ON(event)) {
+               ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_PLL, 0,
+                                         pll_out);
+               if (ret)
+                       dev_err(card->dev, "Failed to enable PLL: %d\n", ret);
+               /* Allow PLL time to lock */
+               msleep(100);
+       }
+
+       return ret;
+}
+
+static int snd_rpi_iqaudio_post_dapm_event(struct snd_soc_dapm_widget *w,
+                              struct snd_kcontrol *kcontrol,
+                              int event)
+{
+     switch (event) {
+     case SND_SOC_DAPM_POST_PMU:
+           /* Delay for mic bias ramp */
+           msleep(1000);
+           break;
+     default:
+           break;
+     }
+
+     return 0;
+}
+
+static const struct snd_kcontrol_new dapm_controls[] = {
+       SOC_DAPM_PIN_SWITCH("HP Jack"),
+       SOC_DAPM_PIN_SWITCH("MIC Jack"),
+       SOC_DAPM_PIN_SWITCH("Onboard MIC"),
+       SOC_DAPM_PIN_SWITCH("AUX Jack"),
+};
+
+static const struct snd_soc_dapm_widget dapm_widgets[] = {
+       SND_SOC_DAPM_HP("HP Jack", NULL),
+       SND_SOC_DAPM_MIC("MIC Jack", NULL),
+       SND_SOC_DAPM_MIC("Onboard MIC", NULL),
+       SND_SOC_DAPM_LINE("AUX Jack", NULL),
+       SND_SOC_DAPM_SUPPLY("PLL Control", SND_SOC_NOPM, 0, 0,
+                           snd_rpi_iqaudio_pll_control,
+                           SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+       SND_SOC_DAPM_POST("Post Power Up Event", snd_rpi_iqaudio_post_dapm_event),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+       {"HP Jack", NULL, "HPL"},
+       {"HP Jack", NULL, "HPR"},
+       {"HP Jack", NULL, "PLL Control"},
+
+       {"AUXR", NULL, "AUX Jack"},
+       {"AUXL", NULL, "AUX Jack"},
+       {"AUX Jack", NULL, "PLL Control"},
+
+       /* Assume Mic1 is linked to Headset and Mic2 to on-board mic */
+       {"MIC1", NULL, "MIC Jack"},
+       {"MIC Jack", NULL, "PLL Control"},
+       {"MIC2", NULL, "Onboard MIC"},
+       {"Onboard MIC", NULL, "PLL Control"},
+};
+
+/* machine stream operations */
+
+static int snd_rpi_iqaudio_codec_init(struct snd_soc_pcm_runtime *rtd)
+{
+       struct snd_soc_dai *codec_dai = rtd->codec_dai;
+       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+       int ret;
+
+       /*
+        * Disable AUX Jack Pin by default to prevent PLL being enabled at
+        * startup. This avoids holding the PLL to a fixed SR config for
+        * subsequent streams.
+        *
+        * This pin can still be enabled later, as required by user-space.
+        */
+       snd_soc_dapm_disable_pin(&rtd->card->dapm, "AUX Jack");
+       snd_soc_dapm_sync(&rtd->card->dapm);
+
+       /* Set bclk ratio to align with codec's BCLK rate */
+       ret = snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
+       if (ret) {
+               dev_err(rtd->dev, "Failed to set CPU BLCK ratio\n");
+               return ret;
+       }
+
+       /* Set MCLK frequency to codec, onboard 11.2896MHz clock */
+       return snd_soc_dai_set_sysclk(codec_dai, DA7213_CLKSRC_MCLK, 11289600,
+                                     SND_SOC_CLOCK_OUT);
+}
+
+static int snd_rpi_iqaudio_codec_hw_params(struct snd_pcm_substream *substream,
+                                          struct snd_pcm_hw_params *params)
+{
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       unsigned int samplerate = params_rate(params);
+
+       switch (samplerate) {
+       case  8000:
+       case 16000:
+       case 32000:
+       case 48000:
+       case 96000:
+               pll_out = DA7213_PLL_FREQ_OUT_98304000;
+               return 0;
+       case 44100:
+       case 88200:
+               pll_out = DA7213_PLL_FREQ_OUT_90316800;
+               return 0;
+       default:
+               dev_err(rtd->dev,"Unsupported samplerate %d\n", samplerate);
+               return -EINVAL;
+       }
+}
+
+static const struct snd_soc_ops snd_rpi_iqaudio_codec_ops = {
+       .hw_params = snd_rpi_iqaudio_codec_hw_params,
+};
+
+SND_SOC_DAILINK_DEFS(rpi_iqaudio,
+       DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
+       DAILINK_COMP_ARRAY(COMP_CODEC("da7213.1-001a", "da7213-hifi")),
+       DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2835-i2s.0")));
+
+static struct snd_soc_dai_link snd_rpi_iqaudio_codec_dai[] = {
+{
+       .dai_fmt                = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+                                 SND_SOC_DAIFMT_CBM_CFM,
+       .init                   = snd_rpi_iqaudio_codec_init,
+       .ops                    = &snd_rpi_iqaudio_codec_ops,
+       .symmetric_rates        = 1,
+       .symmetric_channels     = 1,
+       .symmetric_samplebits   = 1,
+       SND_SOC_DAILINK_REG(rpi_iqaudio),
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_iqaudio_codec = {
+       .owner                  = THIS_MODULE,
+       .dai_link               = snd_rpi_iqaudio_codec_dai,
+       .num_links              = ARRAY_SIZE(snd_rpi_iqaudio_codec_dai),
+       .controls               = dapm_controls,
+       .num_controls           = ARRAY_SIZE(dapm_controls),
+       .dapm_widgets           = dapm_widgets,
+       .num_dapm_widgets       = ARRAY_SIZE(dapm_widgets),
+       .dapm_routes            = audio_map,
+       .num_dapm_routes        = ARRAY_SIZE(audio_map),
+};
+
+static int snd_rpi_iqaudio_codec_probe(struct platform_device *pdev)
+{
+       int ret = 0;
+
+       snd_rpi_iqaudio_codec.dev = &pdev->dev;
+
+       if (pdev->dev.of_node) {
+               struct device_node *i2s_node;
+               struct snd_soc_card *card = &snd_rpi_iqaudio_codec;
+               struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_codec_dai[0];
+
+               i2s_node = of_parse_phandle(pdev->dev.of_node,
+                                           "i2s-controller", 0);
+               if (i2s_node) {
+                       dai->cpus->dai_name = NULL;
+                       dai->cpus->of_node = i2s_node;
+                       dai->platforms->name = NULL;
+                       dai->platforms->of_node = i2s_node;
+               }
+
+               if (of_property_read_string(pdev->dev.of_node, "card_name",
+                                           &card->name))
+                       card->name = "IQaudIOCODEC";
+
+               if (of_property_read_string(pdev->dev.of_node, "dai_name",
+                                           &dai->name))
+                       dai->name = "IQaudIO CODEC";
+
+               if (of_property_read_string(pdev->dev.of_node,
+                                       "dai_stream_name", &dai->stream_name))
+                       dai->stream_name = "IQaudIO CODEC HiFi v1.2";
+
+       }
+
+       ret = snd_soc_register_card(&snd_rpi_iqaudio_codec);
+       if (ret) {
+               if (ret != -EPROBE_DEFER)
+                       dev_err(&pdev->dev,
+                               "snd_soc_register_card() failed: %d\n", ret);
+               return ret;
+       }
+
+       return 0;
+}
+
+static int snd_rpi_iqaudio_codec_remove(struct platform_device *pdev)
+{
+       return snd_soc_unregister_card(&snd_rpi_iqaudio_codec);
+}
+
+static const struct of_device_id iqaudio_of_match[] = {
+       { .compatible = "iqaudio,iqaudio-codec", },
+       {},
+};
+
+MODULE_DEVICE_TABLE(of, iqaudio_of_match);
+
+static struct platform_driver snd_rpi_iqaudio_codec_driver = {
+       .driver = {
+               .name   = "snd-rpi-iqaudio-codec",
+               .owner  = THIS_MODULE,
+               .of_match_table = iqaudio_of_match,
+       },
+       .probe          = snd_rpi_iqaudio_codec_probe,
+       .remove         = snd_rpi_iqaudio_codec_remove,
+};
+
+
+
+module_platform_driver(snd_rpi_iqaudio_codec_driver);
+
+MODULE_AUTHOR("Gordon Garrity <gordon@iqaudio.com>");
+MODULE_DESCRIPTION("ASoC Driver for IQaudIO CODEC");
+MODULE_LICENSE("GPL v2");