1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (c) 2013 Google, Inc 4 */ 5 6 #include <common.h> 7 #include <audio_codec.h> 8 #include <dm.h> 9 #include <i2s.h> 10 #include <sound.h> 11 #include <asm/sdl.h> 12 13 struct sandbox_codec_priv { 14 int interface; 15 int rate; 16 int mclk_freq; 17 int bits_per_sample; 18 uint channels; 19 }; 20 21 struct sandbox_i2s_priv { 22 int sum; /* Use to sum the provided audio data */ 23 }; 24 25 struct sandbox_sound_priv { 26 int setup_called; 27 int sum; /* Use to sum the provided audio data */ 28 }; 29 30 void sandbox_get_codec_params(struct udevice *dev, int *interfacep, int *ratep, 31 int *mclk_freqp, int *bits_per_samplep, 32 uint *channelsp) 33 { 34 struct sandbox_codec_priv *priv = dev_get_priv(dev); 35 36 *interfacep = priv->interface; 37 *ratep = priv->rate; 38 *mclk_freqp = priv->mclk_freq; 39 *bits_per_samplep = priv->bits_per_sample; 40 *channelsp = priv->channels; 41 } 42 43 int sandbox_get_i2s_sum(struct udevice *dev) 44 { 45 struct sandbox_i2s_priv *priv = dev_get_priv(dev); 46 47 return priv->sum; 48 } 49 50 int sandbox_get_setup_called(struct udevice *dev) 51 { 52 struct sandbox_sound_priv *priv = dev_get_priv(dev); 53 54 return priv->setup_called; 55 } 56 57 int sandbox_get_sound_sum(struct udevice *dev) 58 { 59 struct sandbox_sound_priv *priv = dev_get_priv(dev); 60 61 return priv->sum; 62 } 63 64 static int sandbox_codec_set_params(struct udevice *dev, int interface, 65 int rate, int mclk_freq, 66 int bits_per_sample, uint channels) 67 { 68 struct sandbox_codec_priv *priv = dev_get_priv(dev); 69 70 priv->interface = interface; 71 priv->rate = rate; 72 priv->mclk_freq = mclk_freq; 73 priv->bits_per_sample = bits_per_sample; 74 priv->channels = channels; 75 76 return 0; 77 } 78 79 static int sandbox_i2s_tx_data(struct udevice *dev, void *data, 80 uint data_size) 81 { 82 struct sandbox_i2s_priv *priv = dev_get_priv(dev); 83 int i; 84 85 for (i = 0; i < data_size; i++) 86 priv->sum += ((uint8_t *)data)[i]; 87 88 return sandbox_sdl_sound_play(data, data_size); 89 } 90 91 static int sandbox_i2s_probe(struct udevice *dev) 92 { 93 struct i2s_uc_priv *uc_priv = dev_get_uclass_priv(dev); 94 95 /* Use hard-coded values here */ 96 uc_priv->rfs = 256; 97 uc_priv->bfs = 32; 98 uc_priv->audio_pll_clk = 192000000; 99 uc_priv->samplingrate = 48000; 100 uc_priv->bitspersample = 16; 101 uc_priv->channels = 2; 102 uc_priv->id = 1; 103 104 /* Ignore any error here - we'll just have no sound */ 105 sandbox_sdl_sound_init(uc_priv->samplingrate, uc_priv->channels); 106 107 return 0; 108 } 109 110 static int sandbox_sound_setup(struct udevice *dev) 111 { 112 struct sandbox_sound_priv *priv = dev_get_priv(dev); 113 114 priv->setup_called++; 115 116 return 0; 117 } 118 119 static int sandbox_sound_play(struct udevice *dev, void *data, uint data_size) 120 { 121 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev); 122 struct sandbox_sound_priv *priv = dev_get_priv(dev); 123 int i; 124 125 for (i = 0; i < data_size; i++) 126 priv->sum += ((uint8_t *)data)[i]; 127 128 return i2s_tx_data(uc_priv->i2s, data, data_size); 129 } 130 131 static int sandbox_sound_probe(struct udevice *dev) 132 { 133 return sound_find_codec_i2s(dev); 134 } 135 136 static const struct audio_codec_ops sandbox_codec_ops = { 137 .set_params = sandbox_codec_set_params, 138 }; 139 140 static const struct udevice_id sandbox_codec_ids[] = { 141 { .compatible = "sandbox,audio-codec" }, 142 { } 143 }; 144 145 U_BOOT_DRIVER(sandbox_codec) = { 146 .name = "sandbox_codec", 147 .id = UCLASS_AUDIO_CODEC, 148 .of_match = sandbox_codec_ids, 149 .ops = &sandbox_codec_ops, 150 .priv_auto_alloc_size = sizeof(struct sandbox_codec_priv), 151 }; 152 153 static const struct i2s_ops sandbox_i2s_ops = { 154 .tx_data = sandbox_i2s_tx_data, 155 }; 156 157 static const struct udevice_id sandbox_i2s_ids[] = { 158 { .compatible = "sandbox,i2s" }, 159 { } 160 }; 161 162 U_BOOT_DRIVER(sandbox_i2s) = { 163 .name = "sandbox_i2s", 164 .id = UCLASS_I2S, 165 .of_match = sandbox_i2s_ids, 166 .ops = &sandbox_i2s_ops, 167 .probe = sandbox_i2s_probe, 168 .priv_auto_alloc_size = sizeof(struct sandbox_i2s_priv), 169 }; 170 171 static const struct sound_ops sandbox_sound_ops = { 172 .setup = sandbox_sound_setup, 173 .play = sandbox_sound_play, 174 }; 175 176 static const struct udevice_id sandbox_sound_ids[] = { 177 { .compatible = "sandbox,sound" }, 178 { } 179 }; 180 181 U_BOOT_DRIVER(sandbox_sound) = { 182 .name = "sandbox_sound", 183 .id = UCLASS_SOUND, 184 .of_match = sandbox_sound_ids, 185 .ops = &sandbox_sound_ops, 186 .priv_auto_alloc_size = sizeof(struct sandbox_sound_priv), 187 .probe = sandbox_sound_probe, 188 }; 189