Added PiFi-Mini to rpi-simple-soundcard.c

Signed-off-by: David Knell <david.knell@gmail.com>

diff --git a/sound/soc/bcm/rpi-simple-soundcard.c b/sound/soc/bcm/rpi-simple-soundcard.c
index bf61a42..c25351e 100644 (file)
--- a/sound/soc/bcm/rpi-simple-soundcard.c
+++ b/sound/soc/bcm/rpi-simple-soundcard.c
@@ -32,6 +32,7 @@
 
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/gpio/consumer.h>
 
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -45,6 +46,13 @@ struct snd_rpi_simple_drvdata {
        unsigned int fixed_bclk_ratio;
 };
 
+static struct snd_soc_card snd_rpi_simple = {
+       .driver_name  = "RPi-simple",
+       .owner        = THIS_MODULE,
+       .dai_link     = NULL,
+       .num_links    = 1, /* Only a single DAI supported at the moment */
+};
+
 static int snd_rpi_simple_init(struct snd_soc_pcm_runtime *rtd)
 {
        struct snd_rpi_simple_drvdata *drvdata =
@@ -58,6 +66,60 @@ static int snd_rpi_simple_init(struct snd_soc_pcm_runtime *rtd)
        return 0;
 }
 
+static int pifi_mini_210_init(struct snd_soc_pcm_runtime *rtd)
+{
+       struct snd_soc_component *dac;
+       struct gpio_desc *pdn_gpio, *rst_gpio;
+       struct snd_soc_dai *codec_dai;
+       int ret;
+
+       snd_rpi_simple_init(rtd);
+       codec_dai = asoc_rtd_to_codec(rtd, 0);
+
+       dac = codec_dai[0].component;
+
+       pdn_gpio = devm_gpiod_get_optional(snd_rpi_simple.dev, "pdn",
+                                               GPIOD_OUT_LOW);
+       if (IS_ERR(pdn_gpio)) {
+               ret = PTR_ERR(pdn_gpio);
+               dev_err(snd_rpi_simple.dev, "failed to get pdn gpio: %d\n", ret);
+               return ret;
+       }
+
+       rst_gpio = devm_gpiod_get_optional(snd_rpi_simple.dev, "rst",
+                                               GPIOD_OUT_LOW);
+       if (IS_ERR(rst_gpio)) {
+               ret = PTR_ERR(rst_gpio);
+               dev_err(snd_rpi_simple.dev, "failed to get rst gpio: %d\n", ret);
+               return ret;
+       }
+
+       // Set up cards - pulse power down and reset first, then
+       // set up according to datasheet
+       gpiod_set_value_cansleep(pdn_gpio, 1);
+       gpiod_set_value_cansleep(rst_gpio, 1);
+       usleep_range(1000, 10000);
+       gpiod_set_value_cansleep(pdn_gpio, 0);
+       usleep_range(20000, 30000);
+       gpiod_set_value_cansleep(rst_gpio, 0);
+       usleep_range(20000, 30000);
+
+       // Oscillator trim
+       snd_soc_component_write(dac, 0x1b, 0);
+       usleep_range(60000, 80000);
+
+       // MCLK at 64fs, sample rate 44.1 or 48kHz
+       snd_soc_component_write(dac, 0x00, 0x60);
+
+       // Set up for BTL - AD/BD mode - AD is 0x00107772, BD is 0x00987772
+       snd_soc_component_write(dac, 0x20, 0x00107772);
+
+       // End mute
+       snd_soc_component_write(dac, 0x05, 0x00);
+
+       return 0;
+}
+
 static int snd_rpi_simple_hw_params(struct snd_pcm_substream *substream,
                struct snd_pcm_hw_params *params)
 {
@@ -255,6 +317,29 @@ static struct snd_rpi_simple_drvdata drvdata_merus_amp = {
        .fixed_bclk_ratio = 64,
 };
 
+SND_SOC_DAILINK_DEFS(pifi_mini_210,
+       DAILINK_COMP_ARRAY(COMP_EMPTY()),
+       DAILINK_COMP_ARRAY(COMP_CODEC("tas571x.1-001a", "tas571x-hifi")),
+       DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+static struct snd_soc_dai_link snd_pifi_mini_210_dai[] = {
+       {
+               .name           = "PiFi Mini 210",
+               .stream_name    = "PiFi Mini 210 HiFi",
+               .init                   = pifi_mini_210_init,
+               .dai_fmt        = SND_SOC_DAIFMT_I2S |
+                                       SND_SOC_DAIFMT_NB_NF |
+                                       SND_SOC_DAIFMT_CBS_CFS,
+               SND_SOC_DAILINK_REG(pifi_mini_210),
+       },
+};
+
+static struct snd_rpi_simple_drvdata drvdata_pifi_mini_210 = {
+       .card_name        = "snd_pifi_mini_210",
+       .dai              = snd_pifi_mini_210_dai,
+       .fixed_bclk_ratio = 64,
+};
+
 static const struct of_device_id snd_rpi_simple_of_match[] = {
        { .compatible = "adi,adau1977-adc",
                .data = (void *) &drvdata_adau1977 },
@@ -269,16 +354,11 @@ static const struct of_device_id snd_rpi_simple_of_match[] = {
        { .compatible = "rpi,rpi-dac", &drvdata_rpi_dac},
        { .compatible = "merus,merus-amp",
                .data = (void *) &drvdata_merus_amp },
+       { .compatible = "pifi,pifi-mini-210",
+               .data = (void *) &drvdata_pifi_mini_210 },
        {},
 };
 
-static struct snd_soc_card snd_rpi_simple = {
-       .driver_name  = "RPi-simple",
-       .owner        = THIS_MODULE,
-       .dai_link     = NULL,
-       .num_links    = 1, /* Only a single DAI supported at the moment */
-};
-
 static int snd_rpi_simple_probe(struct platform_device *pdev)
 {
        int ret = 0;