1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2018 Google, LLC 4 * Written by Simon Glass <sjg@chromium.org> 5 */ 6 7 #define LOG_CATEGORY UCLASS_SOUND 8 9 #include <common.h> 10 #include <audio_codec.h> 11 #include <clk.h> 12 #include <dm.h> 13 #include <i2s.h> 14 #include <misc.h> 15 #include <sound.h> 16 #include <asm/arch/periph.h> 17 #include <dm/pinctrl.h> 18 19 static int rockchip_sound_setup(struct udevice *dev) 20 { 21 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev); 22 struct i2s_uc_priv *i2c_priv = dev_get_uclass_priv(uc_priv->i2s); 23 int ret; 24 25 if (uc_priv->setup_done) 26 return -EALREADY; 27 ret = audio_codec_set_params(uc_priv->codec, i2c_priv->id, 28 i2c_priv->samplingrate, 29 i2c_priv->samplingrate * i2c_priv->rfs, 30 i2c_priv->bitspersample, 31 i2c_priv->channels); 32 if (ret) 33 return ret; 34 uc_priv->setup_done = true; 35 36 return 0; 37 } 38 39 static int rockchip_sound_play(struct udevice *dev, void *data, uint data_size) 40 { 41 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev); 42 43 return i2s_tx_data(uc_priv->i2s, data, data_size); 44 } 45 46 static int rockchip_sound_probe(struct udevice *dev) 47 { 48 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev); 49 struct ofnode_phandle_args args; 50 struct udevice *pinctrl; 51 struct clk clk; 52 ofnode node; 53 int ret; 54 55 node = ofnode_find_subnode(dev_ofnode(dev), "cpu"); 56 if (!ofnode_valid(node)) { 57 log_debug("Failed to find /cpu subnode\n"); 58 return -EINVAL; 59 } 60 ret = ofnode_parse_phandle_with_args(node, "sound-dai", 61 "#sound-dai-cells", 0, 0, &args); 62 if (ret) { 63 log_debug("Cannot find i2s phandle: %d\n", ret); 64 return ret; 65 } 66 ret = uclass_get_device_by_ofnode(UCLASS_I2S, args.node, &uc_priv->i2s); 67 if (ret) { 68 log_debug("Cannot find i2s: %d\n", ret); 69 return ret; 70 } 71 72 node = ofnode_find_subnode(dev_ofnode(dev), "codec"); 73 if (!ofnode_valid(node)) { 74 log_debug("Failed to find /codec subnode\n"); 75 return -EINVAL; 76 } 77 ret = ofnode_parse_phandle_with_args(node, "sound-dai", 78 "#sound-dai-cells", 0, 0, &args); 79 if (ret) { 80 log_debug("Cannot find codec phandle: %d\n", ret); 81 return ret; 82 } 83 ret = uclass_get_device_by_ofnode(UCLASS_AUDIO_CODEC, args.node, 84 &uc_priv->codec); 85 if (ret) { 86 log_debug("Cannot find audio codec: %d\n", ret); 87 return ret; 88 } 89 ret = clk_get_by_index(uc_priv->i2s, 1, &clk); 90 if (ret) { 91 log_debug("Cannot find clock: %d\n", ret); 92 return ret; 93 } 94 ret = clk_set_rate(&clk, 12288000); 95 if (ret < 0) { 96 log_debug("Cannot find clock: %d\n", ret); 97 return ret; 98 } 99 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 100 if (ret) { 101 debug("%s: Cannot find pinctrl device\n", __func__); 102 return ret; 103 } 104 ret = pinctrl_request(pinctrl, PERIPH_ID_I2S, 0); 105 if (ret) { 106 debug("%s: Cannot select I2C pinctrl\n", __func__); 107 return ret; 108 } 109 110 log_debug("Probed sound '%s' with codec '%s' and i2s '%s'\n", dev->name, 111 uc_priv->codec->name, uc_priv->i2s->name); 112 113 return 0; 114 } 115 116 static const struct sound_ops rockchip_sound_ops = { 117 .setup = rockchip_sound_setup, 118 .play = rockchip_sound_play, 119 }; 120 121 static const struct udevice_id rockchip_sound_ids[] = { 122 { .compatible = "rockchip,audio-max98090-jerry" }, 123 { } 124 }; 125 126 U_BOOT_DRIVER(rockchip_sound) = { 127 .name = "rockchip_sound", 128 .id = UCLASS_SOUND, 129 .of_match = rockchip_sound_ids, 130 .probe = rockchip_sound_probe, 131 .ops = &rockchip_sound_ops, 132 }; 133