Add a sound driver for samus which ties together the audio codec and I2S controller.
For now broadwell_sound is commented out in the makefile since we cannot compile it without sound support enabled. The next commit fixes this.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v2: None
drivers/sound/Makefile | 2 +- drivers/sound/broadwell_sound.c | 65 +++++++++++++++++++++++++++++++++ 2 files changed, 66 insertions(+), 1 deletion(-) create mode 100644 drivers/sound/broadwell_sound.c
diff --git a/drivers/sound/Makefile b/drivers/sound/Makefile index fe3ccd6e5c6..452a5a17616 100644 --- a/drivers/sound/Makefile +++ b/drivers/sound/Makefile @@ -18,5 +18,5 @@ obj-$(CONFIG_SOUND_MAX98095) += max98095.o maxim_codec.o obj-$(CONFIG_SOUND_INTEL_HDA) += hda_codec.o obj-$(CONFIG_SOUND_I8254) += i8254_beep.o obj-$(CONFIG_SOUND_RT5677) += rt5677.o -obj-$(CONFIG_INTEL_BROADWELL) += broadwell_i2s.o +obj-$(CONFIG_INTEL_BROADWELL) += broadwell_i2s.o #broadwell_sound.o obj-$(CONFIG_SOUND_IVYBRIDGE) += ivybridge_sound.o diff --git a/drivers/sound/broadwell_sound.c b/drivers/sound/broadwell_sound.c new file mode 100644 index 00000000000..6e083fe1f69 --- /dev/null +++ b/drivers/sound/broadwell_sound.c @@ -0,0 +1,65 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Sound for broadwell + * + * Copyright 2019 Google LLC + * Written by Simon Glass sjg@chromium.org + */ + +#define LOG_CATEGORY UCLASS_SOUND + +#include <common.h> +#include <audio_codec.h> +#include <dm.h> +#include <i2s.h> +#include <sound.h> + +static int broadwell_sound_probe(struct udevice *dev) +{ + return sound_find_codec_i2s(dev); +} + +static int broadwell_sound_setup(struct udevice *dev) +{ + struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev); + struct i2s_uc_priv *i2c_priv = dev_get_uclass_priv(uc_priv->i2s); + int ret; + + if (uc_priv->setup_done) + return -EALREADY; + ret = audio_codec_set_params(uc_priv->codec, i2c_priv->id, + i2c_priv->samplingrate, + i2c_priv->samplingrate * i2c_priv->rfs, + i2c_priv->bitspersample, + i2c_priv->channels); + if (ret) + return ret; + uc_priv->setup_done = true; + + return 0; +} + +static int broadwell_sound_play(struct udevice *dev, void *data, uint data_size) +{ + struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev); + + return i2s_tx_data(uc_priv->i2s, data, data_size); +} + +static const struct sound_ops broadwell_sound_ops = { + .setup = broadwell_sound_setup, + .play = broadwell_sound_play, +}; + +static const struct udevice_id broadwell_sound_ids[] = { + { .compatible = "google,samus-sound" }, + { } +}; + +U_BOOT_DRIVER(broadwell_sound_drv) = { + .name = "broadwell_sound", + .id = UCLASS_SOUND, + .of_match = broadwell_sound_ids, + .probe = broadwell_sound_probe, + .ops = &broadwell_sound_ops, +};