1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (c) 2018, Linaro Limited 3 4 #include <linux/module.h> 5 #include <linux/platform_device.h> 6 #include <linux/of_device.h> 7 #include <sound/soc.h> 8 #include <sound/soc-dapm.h> 9 #include <sound/pcm.h> 10 #include "common.h" 11 12 #define SLIM_MAX_TX_PORTS 16 13 #define SLIM_MAX_RX_PORTS 16 14 #define WCD9335_DEFAULT_MCLK_RATE 9600000 15 16 static int apq8096_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 17 struct snd_pcm_hw_params *params) 18 { 19 struct snd_interval *rate = hw_param_interval(params, 20 SNDRV_PCM_HW_PARAM_RATE); 21 struct snd_interval *channels = hw_param_interval(params, 22 SNDRV_PCM_HW_PARAM_CHANNELS); 23 24 rate->min = rate->max = 48000; 25 channels->min = channels->max = 2; 26 27 return 0; 28 } 29 30 static int msm_snd_hw_params(struct snd_pcm_substream *substream, 31 struct snd_pcm_hw_params *params) 32 { 33 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 34 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 35 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 36 u32 rx_ch[SLIM_MAX_RX_PORTS], tx_ch[SLIM_MAX_TX_PORTS]; 37 u32 rx_ch_cnt = 0, tx_ch_cnt = 0; 38 int ret = 0; 39 40 ret = snd_soc_dai_get_channel_map(codec_dai, 41 &tx_ch_cnt, tx_ch, &rx_ch_cnt, rx_ch); 42 if (ret != 0 && ret != -ENOTSUPP) { 43 pr_err("failed to get codec chan map, err:%d\n", ret); 44 goto end; 45 } else if (ret == -ENOTSUPP) { 46 return 0; 47 } 48 49 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 50 ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL, 51 rx_ch_cnt, rx_ch); 52 else 53 ret = snd_soc_dai_set_channel_map(cpu_dai, tx_ch_cnt, tx_ch, 54 0, NULL); 55 if (ret != 0 && ret != -ENOTSUPP) 56 pr_err("Failed to set cpu chan map, err:%d\n", ret); 57 else if (ret == -ENOTSUPP) 58 ret = 0; 59 end: 60 return ret; 61 } 62 63 static struct snd_soc_ops apq8096_ops = { 64 .hw_params = msm_snd_hw_params, 65 }; 66 67 static int apq8096_init(struct snd_soc_pcm_runtime *rtd) 68 { 69 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 70 71 /* 72 * Codec SLIMBUS configuration 73 * RX1, RX2, RX3, RX4, RX5, RX6, RX7, RX8, RX9, RX10, RX11, RX12, RX13 74 * TX1, TX2, TX3, TX4, TX5, TX6, TX7, TX8, TX9, TX10, TX11, TX12, TX13 75 * TX14, TX15, TX16 76 */ 77 unsigned int rx_ch[SLIM_MAX_RX_PORTS] = {144, 145, 146, 147, 148, 149, 78 150, 151, 152, 153, 154, 155, 156}; 79 unsigned int tx_ch[SLIM_MAX_TX_PORTS] = {128, 129, 130, 131, 132, 133, 80 134, 135, 136, 137, 138, 139, 81 140, 141, 142, 143}; 82 83 snd_soc_dai_set_channel_map(codec_dai, ARRAY_SIZE(tx_ch), 84 tx_ch, ARRAY_SIZE(rx_ch), rx_ch); 85 86 snd_soc_dai_set_sysclk(codec_dai, 0, WCD9335_DEFAULT_MCLK_RATE, 87 SNDRV_PCM_STREAM_PLAYBACK); 88 89 return 0; 90 } 91 92 static void apq8096_add_be_ops(struct snd_soc_card *card) 93 { 94 struct snd_soc_dai_link *link; 95 int i; 96 97 for_each_card_prelinks(card, i, link) { 98 if (link->no_pcm == 1) { 99 link->be_hw_params_fixup = apq8096_be_hw_params_fixup; 100 link->init = apq8096_init; 101 link->ops = &apq8096_ops; 102 } 103 } 104 } 105 106 static int apq8096_platform_probe(struct platform_device *pdev) 107 { 108 struct snd_soc_card *card; 109 struct device *dev = &pdev->dev; 110 int ret; 111 112 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 113 if (!card) 114 return -ENOMEM; 115 116 card->dev = dev; 117 card->owner = THIS_MODULE; 118 dev_set_drvdata(dev, card); 119 ret = qcom_snd_parse_of(card); 120 if (ret) 121 return ret; 122 123 apq8096_add_be_ops(card); 124 return devm_snd_soc_register_card(dev, card); 125 } 126 127 static const struct of_device_id msm_snd_apq8096_dt_match[] = { 128 {.compatible = "qcom,apq8096-sndcard"}, 129 {} 130 }; 131 132 MODULE_DEVICE_TABLE(of, msm_snd_apq8096_dt_match); 133 134 static struct platform_driver msm_snd_apq8096_driver = { 135 .probe = apq8096_platform_probe, 136 .driver = { 137 .name = "msm-snd-apq8096", 138 .of_match_table = msm_snd_apq8096_dt_match, 139 }, 140 }; 141 module_platform_driver(msm_snd_apq8096_driver); 142 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); 143 MODULE_DESCRIPTION("APQ8096 ASoC Machine Driver"); 144 MODULE_LICENSE("GPL v2"); 145