dm: sound: Create a uclass for audio codecs
An audio codec provides a way to convert digital data to sound and vice
versa. Add a simple uclass which just supports setting the parameters for
the codec.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/sound/sandbox.c b/drivers/sound/sandbox.c
index 94eff54..d24eb9a 100644
--- a/drivers/sound/sandbox.c
+++ b/drivers/sound/sandbox.c
@@ -4,9 +4,19 @@
*/
#include <common.h>
+#include <dm.h>
+#include <audio_codec.h>
#include <asm/sound.h>
#include <asm/sdl.h>
+struct sandbox_codec_priv {
+ int interface;
+ int rate;
+ int mclk_freq;
+ int bits_per_sample;
+ uint channels;
+};
+
int sound_play(uint32_t msec, uint32_t frequency)
{
sandbox_sdl_sound_start(frequency);
@@ -20,3 +30,48 @@
{
return sandbox_sdl_sound_init();
}
+
+void sandbox_get_codec_params(struct udevice *dev, int *interfacep, int *ratep,
+ int *mclk_freqp, int *bits_per_samplep,
+ uint *channelsp)
+{
+ struct sandbox_codec_priv *priv = dev_get_priv(dev);
+
+ *interfacep = priv->interface;
+ *ratep = priv->rate;
+ *mclk_freqp = priv->mclk_freq;
+ *bits_per_samplep = priv->bits_per_sample;
+ *channelsp = priv->channels;
+}
+
+static int sandbox_codec_set_params(struct udevice *dev, int interface,
+ int rate, int mclk_freq,
+ int bits_per_sample, uint channels)
+{
+ struct sandbox_codec_priv *priv = dev_get_priv(dev);
+
+ priv->interface = interface;
+ priv->rate = rate;
+ priv->mclk_freq = mclk_freq;
+ priv->bits_per_sample = bits_per_sample;
+ priv->channels = channels;
+
+ return 0;
+}
+
+static const struct audio_codec_ops sandbox_codec_ops = {
+ .set_params = sandbox_codec_set_params,
+};
+
+static const struct udevice_id sandbox_codec_ids[] = {
+ { .compatible = "sandbox,audio-codec" },
+ { }
+};
+
+U_BOOT_DRIVER(sandbox_codec) = {
+ .name = "sandbox_codec",
+ .id = UCLASS_AUDIO_CODEC,
+ .of_match = sandbox_codec_ids,
+ .ops = &sandbox_codec_ops,
+ .priv_auto_alloc_size = sizeof(struct sandbox_codec_priv),
+};