1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2015 The Linux Foundation. All rights reserved. 4 */ 5 6 #include <linux/device.h> 7 #include <linux/module.h> 8 #include <linux/kernel.h> 9 #include <linux/io.h> 10 #include <linux/of.h> 11 #include <linux/clk.h> 12 #include <linux/platform_device.h> 13 #include <sound/pcm.h> 14 #include <sound/pcm_params.h> 15 #include <sound/jack.h> 16 #include <sound/soc.h> 17 #include <uapi/linux/input-event-codes.h> 18 #include <dt-bindings/sound/apq8016-lpass.h> 19 #include "common.h" 20 21 struct apq8016_sbc_data { 22 struct snd_soc_card card; 23 void __iomem *mic_iomux; 24 void __iomem *spkr_iomux; 25 struct snd_soc_jack jack; 26 bool jack_setup; 27 }; 28 29 #define MIC_CTRL_TER_WS_SLAVE_SEL BIT(21) 30 #define MIC_CTRL_QUA_WS_SLAVE_SEL_10 BIT(17) 31 #define MIC_CTRL_TLMM_SCLK_EN BIT(1) 32 #define SPKR_CTL_PRI_WS_SLAVE_SEL_11 (BIT(17) | BIT(16)) 33 #define DEFAULT_MCLK_RATE 9600000 34 35 static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd) 36 { 37 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 38 struct snd_soc_dai *codec_dai; 39 struct snd_soc_component *component; 40 struct snd_soc_card *card = rtd->card; 41 struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card); 42 int i, rval; 43 44 switch (cpu_dai->id) { 45 case MI2S_PRIMARY: 46 writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11, 47 pdata->spkr_iomux); 48 break; 49 50 case MI2S_QUATERNARY: 51 /* Configure the Quat MI2S to TLMM */ 52 writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 | 53 MIC_CTRL_TLMM_SCLK_EN, 54 pdata->mic_iomux); 55 break; 56 case MI2S_TERTIARY: 57 writel(readl(pdata->mic_iomux) | MIC_CTRL_TER_WS_SLAVE_SEL | 58 MIC_CTRL_TLMM_SCLK_EN, 59 pdata->mic_iomux); 60 61 break; 62 63 default: 64 dev_err(card->dev, "unsupported cpu dai configuration\n"); 65 return -EINVAL; 66 67 } 68 69 if (!pdata->jack_setup) { 70 struct snd_jack *jack; 71 72 rval = snd_soc_card_jack_new(card, "Headset Jack", 73 SND_JACK_HEADSET | 74 SND_JACK_HEADPHONE | 75 SND_JACK_BTN_0 | SND_JACK_BTN_1 | 76 SND_JACK_BTN_2 | SND_JACK_BTN_3 | 77 SND_JACK_BTN_4, 78 &pdata->jack, NULL, 0); 79 80 if (rval < 0) { 81 dev_err(card->dev, "Unable to add Headphone Jack\n"); 82 return rval; 83 } 84 85 jack = pdata->jack.jack; 86 87 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); 88 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND); 89 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP); 90 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN); 91 pdata->jack_setup = true; 92 } 93 94 for_each_rtd_codec_dais(rtd, i, codec_dai) { 95 96 component = codec_dai->component; 97 /* Set default mclk for internal codec */ 98 rval = snd_soc_component_set_sysclk(component, 0, 0, DEFAULT_MCLK_RATE, 99 SND_SOC_CLOCK_IN); 100 if (rval != 0 && rval != -ENOTSUPP) { 101 dev_warn(card->dev, "Failed to set mclk: %d\n", rval); 102 return rval; 103 } 104 rval = snd_soc_component_set_jack(component, &pdata->jack, NULL); 105 if (rval != 0 && rval != -ENOTSUPP) { 106 dev_warn(card->dev, "Failed to set jack: %d\n", rval); 107 return rval; 108 } 109 } 110 111 return 0; 112 } 113 114 static void apq8016_sbc_add_ops(struct snd_soc_card *card) 115 { 116 struct snd_soc_dai_link *link; 117 int i; 118 119 for_each_card_prelinks(card, i, link) 120 link->init = apq8016_sbc_dai_init; 121 } 122 123 static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = { 124 125 SND_SOC_DAPM_MIC("Handset Mic", NULL), 126 SND_SOC_DAPM_MIC("Headset Mic", NULL), 127 SND_SOC_DAPM_MIC("Secondary Mic", NULL), 128 SND_SOC_DAPM_MIC("Digital Mic1", NULL), 129 SND_SOC_DAPM_MIC("Digital Mic2", NULL), 130 }; 131 132 static int apq8016_sbc_platform_probe(struct platform_device *pdev) 133 { 134 struct device *dev = &pdev->dev; 135 struct snd_soc_card *card; 136 struct apq8016_sbc_data *data; 137 int ret; 138 139 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 140 if (!data) 141 return -ENOMEM; 142 143 card = &data->card; 144 card->dev = dev; 145 card->owner = THIS_MODULE; 146 card->dapm_widgets = apq8016_sbc_dapm_widgets; 147 card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets); 148 149 ret = qcom_snd_parse_of(card); 150 if (ret) 151 return ret; 152 153 data->mic_iomux = devm_platform_ioremap_resource_byname(pdev, "mic-iomux"); 154 if (IS_ERR(data->mic_iomux)) 155 return PTR_ERR(data->mic_iomux); 156 157 data->spkr_iomux = devm_platform_ioremap_resource_byname(pdev, "spkr-iomux"); 158 if (IS_ERR(data->spkr_iomux)) 159 return PTR_ERR(data->spkr_iomux); 160 161 snd_soc_card_set_drvdata(card, data); 162 163 apq8016_sbc_add_ops(card); 164 return devm_snd_soc_register_card(&pdev->dev, card); 165 } 166 167 static const struct of_device_id apq8016_sbc_device_id[] __maybe_unused = { 168 { .compatible = "qcom,apq8016-sbc-sndcard" }, 169 {}, 170 }; 171 MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id); 172 173 static struct platform_driver apq8016_sbc_platform_driver = { 174 .driver = { 175 .name = "qcom-apq8016-sbc", 176 .of_match_table = of_match_ptr(apq8016_sbc_device_id), 177 }, 178 .probe = apq8016_sbc_platform_probe, 179 }; 180 module_platform_driver(apq8016_sbc_platform_driver); 181 182 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); 183 MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver"); 184 MODULE_LICENSE("GPL v2"); 185