git.openwrt.org Git - openwrt/staging/ldir.git/blob

   1 From fb21611efd7cd916646d9ab2988c3af08f139761 Mon Sep 17 00:00:00 2001
   2 From: Ben Payne <ben@bluerocksoft.com>
   3 Date: Tue, 13 Feb 2024 14:55:14 -0800
   4 Subject: [PATCH 1276/1295] Impliment driver support for Interlude Audio
   5  Digital Hat
   6
   7 Implementing driver support for
   8 Interlude audio's WM8805 based digital hat
   9 by leveraging existing drivers
  10 ---
  11  sound/soc/bcm/rpi-wm8804-soundcard.c | 139 +++++++++++++++++++++++++++
  12  1 file changed, 139 insertions(+)
  13
  14 --- a/sound/soc/bcm/rpi-wm8804-soundcard.c
  15 +++ b/sound/soc/bcm/rpi-wm8804-soundcard.c
  16 @@ -34,6 +34,7 @@
  17  #include <linux/gpio/consumer.h>
  18  #include <linux/platform_device.h>
  19  #include <linux/module.h>
  20 +#include <linux/delay.h>
  21
  22  #include <sound/core.h>
  23  #include <sound/pcm.h>
  24 @@ -65,6 +66,10 @@ struct snd_rpi_wm8804_drvdata {
  25  static struct gpio_desc *snd_clk44gpio;
  26  static struct gpio_desc *snd_clk48gpio;
  27  static int wm8804_samplerate = 0;
  28 +static struct gpio_desc *led_gpio_1;
  29 +static struct gpio_desc *led_gpio_2;
  30 +static struct gpio_desc *led_gpio_3;
  31 +static struct gpio_desc *custom_reset;
  32
  33  /* Forward declarations */
  34  static struct snd_soc_dai_link snd_allo_digione_dai[];
  35 @@ -74,6 +79,37 @@ static struct snd_soc_card snd_rpi_wm880
  36  #define CLK_44EN_RATE 22579200UL
  37  #define CLK_48EN_RATE 24576000UL
  38
  39 +static const char * const wm8805_input_select_text[] = {
  40 +       "Rx 0",
  41 +       "Rx 1",
  42 +       "Rx 2",
  43 +       "Rx 3",
  44 +       "Rx 4",
  45 +       "Rx 5",
  46 +       "Rx 6",
  47 +       "Rx 7"
  48 +};
  49 +
  50 +static const unsigned int wm8805_input_channel_select_value[] = {
  51 +       0, 1, 2, 3, 4, 5, 6, 7
  52 +};
  53 +
  54 +static const struct soc_enum wm8805_input_channel_sel[] = {
  55 +       SOC_VALUE_ENUM_SINGLE(WM8804_PLL6, 0, 7, ARRAY_SIZE(wm8805_input_select_text),
  56 +       wm8805_input_select_text, wm8805_input_channel_select_value),
  57 +};
  58 +
  59 +static const struct snd_kcontrol_new wm8805_input_controls_card[] = {
  60 +       SOC_ENUM("Select Input Channel", wm8805_input_channel_sel[0]),
  61 +};
  62 +
  63 +static int wm8805_add_input_controls(struct snd_soc_component *component)
  64 +{
  65 +       snd_soc_add_component_controls(component, wm8805_input_controls_card,
  66 +       ARRAY_SIZE(wm8805_input_controls_card));
  67 +       return 0;
  68 +}
  69 +
  70  static unsigned int snd_rpi_wm8804_enable_clock(unsigned int samplerate)
  71  {
  72         switch (samplerate) {
  73 @@ -187,6 +223,53 @@ static struct snd_soc_ops snd_rpi_wm8804
  74         .hw_params = snd_rpi_wm8804_hw_params,
  75  };
  76
  77 +static int snd_interlude_audio_hw_params(struct snd_pcm_substream *substream,
  78 +               struct snd_pcm_hw_params *params)
  79 +{
  80 +       int ret = snd_rpi_wm8804_hw_params(substream, params);
  81 +       int samplerate = params_rate(params);
  82 +
  83 +       switch (samplerate) {
  84 +       case 44100:
  85 +               gpiod_set_value_cansleep(led_gpio_1, 1);
  86 +               gpiod_set_value_cansleep(led_gpio_2, 0);
  87 +               gpiod_set_value_cansleep(led_gpio_3, 0);
  88 +               break;
  89 +       case 48000:
  90 +               gpiod_set_value_cansleep(led_gpio_1, 1);
  91 +               gpiod_set_value_cansleep(led_gpio_2, 0);
  92 +               gpiod_set_value_cansleep(led_gpio_3, 0);
  93 +               break;
  94 +       case 88200:
  95 +               gpiod_set_value_cansleep(led_gpio_1, 0);
  96 +               gpiod_set_value_cansleep(led_gpio_2, 1);
  97 +               gpiod_set_value_cansleep(led_gpio_3, 0);
  98 +               break;
  99 +       case 96000:
 100 +               gpiod_set_value_cansleep(led_gpio_1, 0);
 101 +               gpiod_set_value_cansleep(led_gpio_2, 1);
 102 +               gpiod_set_value_cansleep(led_gpio_3, 0);
 103 +               break;
 104 +       case 176400:
 105 +               gpiod_set_value_cansleep(led_gpio_1, 0);
 106 +               gpiod_set_value_cansleep(led_gpio_2, 0);
 107 +               gpiod_set_value_cansleep(led_gpio_3, 1);
 108 +               break;
 109 +       case 192000:
 110 +               gpiod_set_value_cansleep(led_gpio_1, 0);
 111 +               gpiod_set_value_cansleep(led_gpio_2, 0);
 112 +               gpiod_set_value_cansleep(led_gpio_3, 1);
 113 +               break;
 114 +       default:
 115 +               break;
 116 +       }
 117 +       return ret;
 118 +}
 119 +
 120 +const struct snd_soc_ops interlude_audio_digital_dai_ops = {
 121 +       .hw_params = snd_interlude_audio_hw_params,
 122 +};
 123 +
 124  SND_SOC_DAILINK_DEFS(justboom_digi,
 125         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 126         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 127 @@ -287,6 +370,60 @@ static struct snd_rpi_wm8804_drvdata drv
 128         .probe     = snd_hifiberry_digi_probe,
 129  };
 130
 131 +SND_SOC_DAILINK_DEFS(interlude_audio_digital,
 132 +       DAILINK_COMP_ARRAY(COMP_EMPTY()),
 133 +       DAILINK_COMP_ARRAY(COMP_EMPTY()),
 134 +       DAILINK_COMP_ARRAY(COMP_EMPTY()));
 135 +
 136 +static int snd_interlude_audio_init(struct snd_soc_pcm_runtime *rtd)
 137 +{
 138 +       struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
 139 +       int ret;
 140 +
 141 +       ret = wm8805_add_input_controls(component);
 142 +       if (ret != 0)
 143 +               pr_err("failed to add input controls");
 144 +
 145 +       return 0;
 146 +}
 147 +
 148 +
 149 +static struct snd_soc_dai_link snd_interlude_audio_digital_dai[] = {
 150 +{
 151 +       .name        = "Interlude Audio Digital",
 152 +       .stream_name = "Interlude Audio Digital HiFi",
 153 +       .init        = snd_interlude_audio_init,
 154 +       .ops             = &interlude_audio_digital_dai_ops,
 155 +       SND_SOC_DAILINK_REG(interlude_audio_digital),
 156 +},
 157 +};
 158 +
 159 +
 160 +static int snd_interlude_audio_digital_probe(struct platform_device *pdev)
 161 +{
 162 +       if (IS_ERR(snd_clk44gpio) || IS_ERR(snd_clk48gpio))
 163 +               return 0;
 164 +
 165 +       custom_reset = devm_gpiod_get(&pdev->dev, "reset", GPIOD_OUT_LOW);
 166 +       gpiod_set_value_cansleep(custom_reset, 0);
 167 +       mdelay(10);
 168 +       gpiod_set_value_cansleep(custom_reset, 1);
 169 +
 170 +       snd_interlude_audio_digital_dai->name = "Interlude Audio Digital";
 171 +       snd_interlude_audio_digital_dai->stream_name = "Interlude Audio Digital HiFi";
 172 +       led_gpio_1 = devm_gpiod_get(&pdev->dev, "led1", GPIOD_OUT_LOW);
 173 +       led_gpio_2 = devm_gpiod_get(&pdev->dev, "led2", GPIOD_OUT_LOW);
 174 +       led_gpio_3 = devm_gpiod_get(&pdev->dev, "led3", GPIOD_OUT_LOW);
 175 +       return 0;
 176 +}
 177 +
 178 +
 179 +static struct snd_rpi_wm8804_drvdata drvdata_interlude_audio_digital = {
 180 +       .card_name = "snd_IA_Digital_Hat",
 181 +       .dai       = snd_interlude_audio_digital_dai,
 182 +       .probe     = snd_interlude_audio_digital_probe,
 183 +};
 184 +
 185  static const struct of_device_id snd_rpi_wm8804_of_match[] = {
 186         { .compatible = "justboom,justboom-digi",
 187                 .data = (void *) &drvdata_justboom_digi },
 188 @@ -296,6 +433,8 @@ static const struct of_device_id snd_rpi
 189                 .data = (void *) &drvdata_allo_digione },
 190         { .compatible = "hifiberry,hifiberry-digi",
 191                 .data = (void *) &drvdata_hifiberry_digi },
 192 +       { .compatible = "interludeaudio,interludeaudio-digital",
 193 +               .data = (void *) &drvdata_interlude_audio_digital },
 194         {},
 195  };
 196