| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 | 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 | |
| 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 | |
| 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 | |
| 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"); |