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dm: sound: Add conversion to driver model
Move the existing hardware drivers over to use driver model. Signed-off-by: Simon Glass <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| // SPDX-License-Identifier: GPL-2.0+ | ||
| /* | ||
| * Copyright 2018 Google, LLC | ||
| * Written by Simon Glass <[email protected]> | ||
| */ | ||
|
|
||
| #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, | ||
| }; |
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