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(dai: codec_dai, |
41 | tx_num: &tx_ch_cnt, tx_slot: tx_ch, rx_num: &rx_ch_cnt, rx_slot: 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(dai: cpu_dai, tx_num: 0, NULL, |
51 | rx_num: rx_ch_cnt, rx_slot: rx_ch); |
52 | else |
53 | ret = snd_soc_dai_set_channel_map(dai: cpu_dai, tx_num: tx_ch_cnt, tx_slot: tx_ch, |
54 | rx_num: 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(dai: codec_dai, ARRAY_SIZE(tx_ch), |
84 | tx_slot: tx_ch, ARRAY_SIZE(rx_ch), rx_slot: rx_ch); |
85 | |
86 | snd_soc_dai_set_sysclk(dai: codec_dai, clk_id: 0, WCD9335_DEFAULT_MCLK_RATE, |
87 | dir: 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, size: 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, data: 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 | |