1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2018, Linaro Limited
4 #include <linux/module.h>
5 #include <linux/platform_device.h>
6 #include <linux/of_device.h>
8 #include <sound/soc-dapm.h>
12 static int apq8096_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
13 struct snd_pcm_hw_params *params)
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);
20 rate->min = rate->max = 48000;
21 channels->min = channels->max = 2;
26 static void apq8096_add_be_ops(struct snd_soc_card *card)
28 struct snd_soc_dai_link *link = card->dai_link;
29 int i, num_links = card->num_links;
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;
38 static int apq8096_platform_probe(struct platform_device *pdev)
40 struct snd_soc_card *card;
41 struct device *dev = &pdev->dev;
44 card = kzalloc(sizeof(*card), GFP_KERNEL);
49 card->owner = THIS_MODULE;
50 dev_set_drvdata(dev, card);
51 ret = qcom_snd_parse_of(card);
53 dev_err(dev, "Error parsing OF data\n");
57 apq8096_add_be_ops(card);
58 ret = snd_soc_register_card(card);
60 goto err_card_register;
65 kfree(card->dai_link);
71 static int apq8096_platform_remove(struct platform_device *pdev)
73 struct snd_soc_card *card = dev_get_drvdata(&pdev->dev);
75 snd_soc_unregister_card(card);
76 kfree(card->dai_link);
82 static const struct of_device_id msm_snd_apq8096_dt_match[] = {
83 {.compatible = "qcom,apq8096-sndcard"},
87 MODULE_DEVICE_TABLE(of, msm_snd_apq8096_dt_match);
89 static struct platform_driver msm_snd_apq8096_driver = {
90 .probe = apq8096_platform_probe,
91 .remove = apq8096_platform_remove,
93 .name = "msm-snd-apq8096",
94 .of_match_table = msm_snd_apq8096_dt_match,
97 module_platform_driver(msm_snd_apq8096_driver);
98 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
99 MODULE_DESCRIPTION("APQ8096 ASoC Machine Driver");
100 MODULE_LICENSE("GPL v2");