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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright 2018 Google, LLC
- * Written by Simon Glass <sjg@chromium.org>
- */
- #define LOG_CATEGORY UCLASS_SOUND
- #include <common.h>
- #include <audio_codec.h>
- #include <clk.h>
- #include <dm.h>
- #include <i2s.h>
- #include <log.h>
- #include <misc.h>
- #include <sound.h>
- #include <asm/arch-rockchip/periph.h>
- #include <dm/pinctrl.h>
- static int rockchip_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 rockchip_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 rockchip_sound_probe(struct udevice *dev)
- {
- struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
- struct ofnode_phandle_args args;
- struct udevice *pinctrl;
- struct clk clk;
- ofnode node;
- int ret;
- node = ofnode_find_subnode(dev_ofnode(dev), "cpu");
- if (!ofnode_valid(node)) {
- log_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) {
- log_debug("Cannot find i2s phandle: %d\n", ret);
- return ret;
- }
- ret = uclass_get_device_by_ofnode(UCLASS_I2S, args.node, &uc_priv->i2s);
- if (ret) {
- log_debug("Cannot find i2s: %d\n", ret);
- return ret;
- }
- node = ofnode_find_subnode(dev_ofnode(dev), "codec");
- if (!ofnode_valid(node)) {
- log_debug("Failed to find /codec subnode\n");
- return -EINVAL;
- }
- ret = ofnode_parse_phandle_with_args(node, "sound-dai",
- "#sound-dai-cells", 0, 0, &args);
- if (ret) {
- log_debug("Cannot find codec phandle: %d\n", ret);
- return ret;
- }
- ret = uclass_get_device_by_ofnode(UCLASS_AUDIO_CODEC, args.node,
- &uc_priv->codec);
- if (ret) {
- log_debug("Cannot find audio codec: %d\n", ret);
- return ret;
- }
- ret = clk_get_by_index(uc_priv->i2s, 1, &clk);
- if (ret) {
- log_debug("Cannot find clock: %d\n", ret);
- return ret;
- }
- ret = clk_set_rate(&clk, 12288000);
- if (ret < 0) {
- log_debug("Cannot find clock: %d\n", ret);
- return ret;
- }
- ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
- if (ret) {
- debug("%s: Cannot find pinctrl device\n", __func__);
- return ret;
- }
- ret = pinctrl_request(pinctrl, PERIPH_ID_I2S, 0);
- if (ret) {
- debug("%s: Cannot select I2C pinctrl\n", __func__);
- return ret;
- }
- log_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 rockchip_sound_ops = {
- .setup = rockchip_sound_setup,
- .play = rockchip_sound_play,
- };
- static const struct udevice_id rockchip_sound_ids[] = {
- { .compatible = "rockchip,audio-max98090-jerry" },
- { }
- };
- U_BOOT_DRIVER(rockchip_sound) = {
- .name = "rockchip_sound",
- .id = UCLASS_SOUND,
- .of_match = rockchip_sound_ids,
- .probe = rockchip_sound_probe,
- .ops = &rockchip_sound_ops,
- };
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