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
apq8096_be_hw_params_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)12 static int apq8096_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
13 struct snd_pcm_hw_params *params)
14 {
15 struct snd_interval *rate = hw_param_interval(params,
16 SNDRV_PCM_HW_PARAM_RATE);
17 struct snd_interval *channels = hw_param_interval(params,
18 SNDRV_PCM_HW_PARAM_CHANNELS);
19
20 rate->min = rate->max = 48000;
21 channels->min = channels->max = 2;
22
23 return 0;
24 }
25
apq8096_add_be_ops(struct snd_soc_card * card)26 static void apq8096_add_be_ops(struct snd_soc_card *card)
27 {
28 struct snd_soc_dai_link *link = card->dai_link;
29 int i, num_links = card->num_links;
30
31 for (i = 0; i < num_links; i++) {
32 if (link->no_pcm == 1)
33 link->be_hw_params_fixup = apq8096_be_hw_params_fixup;
34 link++;
35 }
36 }
37
apq8096_platform_probe(struct platform_device * pdev)38 static int apq8096_platform_probe(struct platform_device *pdev)
39 {
40 struct snd_soc_card *card;
41 struct device *dev = &pdev->dev;
42 int ret;
43
44 card = kzalloc(sizeof(*card), GFP_KERNEL);
45 if (!card)
46 return -ENOMEM;
47
48 card->dev = dev;
49 dev_set_drvdata(dev, card);
50 ret = qcom_snd_parse_of(card);
51 if (ret) {
52 dev_err(dev, "Error parsing OF data\n");
53 goto err;
54 }
55
56 apq8096_add_be_ops(card);
57 ret = snd_soc_register_card(card);
58 if (ret)
59 goto err_card_register;
60
61 return 0;
62
63 err_card_register:
64 kfree(card->dai_link);
65 err:
66 kfree(card);
67 return ret;
68 }
69
apq8096_platform_remove(struct platform_device * pdev)70 static int apq8096_platform_remove(struct platform_device *pdev)
71 {
72 struct snd_soc_card *card = dev_get_drvdata(&pdev->dev);
73
74 snd_soc_unregister_card(card);
75 kfree(card->dai_link);
76 kfree(card);
77
78 return 0;
79 }
80
81 static const struct of_device_id msm_snd_apq8096_dt_match[] = {
82 {.compatible = "qcom,apq8096-sndcard"},
83 {}
84 };
85
86 MODULE_DEVICE_TABLE(of, msm_snd_apq8096_dt_match);
87
88 static struct platform_driver msm_snd_apq8096_driver = {
89 .probe = apq8096_platform_probe,
90 .remove = apq8096_platform_remove,
91 .driver = {
92 .name = "msm-snd-apq8096",
93 .of_match_table = msm_snd_apq8096_dt_match,
94 },
95 };
96 module_platform_driver(msm_snd_apq8096_driver);
97 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
98 MODULE_DESCRIPTION("APQ8096 ASoC Machine Driver");
99 MODULE_LICENSE("GPL v2");
100
