dm: sound: Add conversion to driver model
Move the existing hardware drivers over to use driver model.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/sound/samsung_sound.c b/drivers/sound/samsung_sound.c
new file mode 100644
index 0000000..23b467c
--- /dev/null
+++ b/drivers/sound/samsung_sound.c
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 Google, LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <audio_codec.h>
+#include <dm.h>
+#include <i2s.h>
+#include <sound.h>
+#include <asm/gpio.h>
+
+static int samsung_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 samsung_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 int samsung_sound_probe(struct udevice *dev)
+{
+ struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
+ struct ofnode_phandle_args args;
+ struct gpio_desc en_gpio;
+ ofnode node;
+ int ret;
+
+ ret = gpio_request_by_name(dev, "codec-enable-gpio", 0, &en_gpio,
+ GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
+
+ /* Turn on the GPIO which connects to the codec's "enable" line. */
+ if (!ret)
+ gpio_set_pull(gpio_get_number(&en_gpio), S5P_GPIO_PULL_NONE);
+
+ ret = uclass_get_device_by_phandle(UCLASS_AUDIO_CODEC, dev,
+ "samsung,audio-codec",
+ &uc_priv->codec);
+ if (ret) {
+ debug("Failed to probe audio codec\n");
+ return ret;
+ }
+ node = ofnode_find_subnode(dev_ofnode(dev), "cpu");
+ if (!ofnode_valid(node)) {
+ debug("Failed to find /cpu subnode\n");
+ return -EINVAL;
+ }
+ ret = ofnode_parse_phandle_with_args(node, "sound-dai",
+ "#sound-dai-cells", 0, 0, &args);
+ if (ret) {
+ debug("Cannot find phandle: %d\n", ret);
+ return ret;
+ }
+ ret = uclass_get_device_by_ofnode(UCLASS_I2S, args.node, &uc_priv->i2s);
+ if (ret) {
+ debug("Cannot find i2s: %d\n", ret);
+ return ret;
+ }
+ debug("Probed sound '%s' with codec '%s' and i2s '%s'\n", dev->name,
+ uc_priv->codec->name, uc_priv->i2s->name);
+
+ return 0;
+}
+
+static const struct sound_ops samsung_sound_ops = {
+ .setup = samsung_sound_setup,
+ .play = samsung_sound_play,
+};
+
+static const struct udevice_id samsung_sound_ids[] = {
+ { .compatible = "google,snow-audio-max98095" },
+ { }
+};
+
+U_BOOT_DRIVER(samsung_sound) = {
+ .name = "samsung_sound",
+ .id = UCLASS_SOUND,
+ .of_match = samsung_sound_ids,
+ .probe = samsung_sound_probe,
+ .ops = &samsung_sound_ops,
+};