1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2018, Linaro Limited
3
4 #include <linux/mod_devicetable.h>
5 #include <linux/module.h>
6 #include <linux/platform_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 = snd_soc_substream_to_rtd(substream);
34 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
35 struct snd_soc_dai *cpu_dai = snd_soc_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 const 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 = snd_soc_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->driver_name = "apq8096";
117 card->dev = dev;
118 card->owner = THIS_MODULE;
119 dev_set_drvdata(dev, card);
120 ret = qcom_snd_parse_of(card);
121 if (ret)
122 return ret;
123
124 apq8096_add_be_ops(card);
125 return devm_snd_soc_register_card(dev, card);
126 }
127
128 static const struct of_device_id msm_snd_apq8096_dt_match[] = {
129 {.compatible = "qcom,apq8096-sndcard"},
130 {}
131 };
132
133 MODULE_DEVICE_TABLE(of, msm_snd_apq8096_dt_match);
134
135 static struct platform_driver msm_snd_apq8096_driver = {
136 .probe = apq8096_platform_probe,
137 .driver = {
138 .name = "msm-snd-apq8096",
139 .of_match_table = msm_snd_apq8096_dt_match,
140 },
141 };
142 module_platform_driver(msm_snd_apq8096_driver);
143 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
144 MODULE_DESCRIPTION("APQ8096 ASoC Machine Driver");
145 MODULE_LICENSE("GPL");
146
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