diff options
Diffstat (limited to 'sound/soc/qcom/apq8096.c')
| -rw-r--r-- | sound/soc/qcom/apq8096.c | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/sound/soc/qcom/apq8096.c b/sound/soc/qcom/apq8096.c new file mode 100644 index 000000000000..561cd429e6f2 --- /dev/null +++ b/sound/soc/qcom/apq8096.c @@ -0,0 +1,255 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2018, Linaro Limited + +#include <linux/soc/qcom/apr.h> +#include <linux/module.h> +#include <linux/component.h> +#include <linux/platform_device.h> +#include <linux/of_device.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/pcm.h> + +static int apq8096_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, + struct snd_pcm_hw_params *params) +{ + struct snd_interval *rate = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_RATE); + struct snd_interval *channels = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_CHANNELS); + + rate->min = rate->max = 48000; + channels->min = channels->max = 2; + + return 0; +} + +static int apq8096_sbc_parse_of(struct snd_soc_card *card) +{ + struct device_node *np; + struct device_node *codec = NULL; + struct device_node *platform = NULL; + struct device_node *cpu = NULL; + struct device *dev = card->dev; + struct snd_soc_dai_link *link; + int ret, num_links; + + ret = snd_soc_of_parse_card_name(card, "qcom,model"); + if (ret) { + dev_err(dev, "Error parsing card name: %d\n", ret); + return ret; + } + + /* DAPM routes */ + if (of_property_read_bool(dev->of_node, "qcom,audio-routing")) { + ret = snd_soc_of_parse_audio_routing(card, + "qcom,audio-routing"); + if (ret) + return ret; + } + + /* Populate links */ + num_links = of_get_child_count(dev->of_node); + + /* Allocate the DAI link array */ + card->dai_link = kcalloc(num_links, sizeof(*link), GFP_KERNEL); + if (!card->dai_link) + return -ENOMEM; + + card->num_links = num_links; + link = card->dai_link; + + for_each_child_of_node(dev->of_node, np) { + cpu = of_get_child_by_name(np, "cpu"); + if (!cpu) { + dev_err(dev, "Can't find cpu DT node\n"); + ret = -EINVAL; + goto err; + } + + link->cpu_of_node = of_parse_phandle(cpu, "sound-dai", 0); + if (!link->cpu_of_node) { + dev_err(card->dev, "error getting cpu phandle\n"); + ret = -EINVAL; + goto err; + } + + ret = snd_soc_of_get_dai_name(cpu, &link->cpu_dai_name); + if (ret) { + dev_err(card->dev, "error getting cpu dai name\n"); + goto err; + } + + platform = of_get_child_by_name(np, "platform"); + codec = of_get_child_by_name(np, "codec"); + if (codec && platform) { + link->platform_of_node = of_parse_phandle(platform, + "sound-dai", + 0); + if (!link->platform_of_node) { + dev_err(card->dev, "platform dai not found\n"); + ret = -EINVAL; + goto err; + } + + ret = snd_soc_of_get_dai_link_codecs(dev, codec, link); + if (ret < 0) { + dev_err(card->dev, "codec dai not found\n"); + goto err; + } + link->no_pcm = 1; + link->ignore_pmdown_time = 1; + link->be_hw_params_fixup = apq8096_be_hw_params_fixup; + } else { + link->platform_of_node = link->cpu_of_node; + link->codec_dai_name = "snd-soc-dummy-dai"; + link->codec_name = "snd-soc-dummy"; + link->dynamic = 1; + } + + link->ignore_suspend = 1; + ret = of_property_read_string(np, "link-name", &link->name); + if (ret) { + dev_err(card->dev, "error getting codec dai_link name\n"); + goto err; + } + + link->dpcm_playback = 1; + link->dpcm_capture = 1; + link->stream_name = link->name; + link++; + } + + return 0; +err: + of_node_put(cpu); + of_node_put(codec); + of_node_put(platform); + kfree(card->dai_link); + return ret; +} + +static int apq8096_bind(struct device *dev) +{ + struct snd_soc_card *card; + int ret; + + card = kzalloc(sizeof(*card), GFP_KERNEL); + if (!card) + return -ENOMEM; + + component_bind_all(dev, card); + card->dev = dev; + ret = apq8096_sbc_parse_of(card); + if (ret) { + dev_err(dev, "Error parsing OF data\n"); + goto err; + } + + ret = snd_soc_register_card(card); + if (ret) + goto err; + + return 0; + +err: + component_unbind_all(dev, card); + kfree(card); + return ret; +} + +static void apq8096_unbind(struct device *dev) +{ + struct snd_soc_card *card = dev_get_drvdata(dev); + + snd_soc_unregister_card(card); + component_unbind_all(dev, card); + kfree(card->dai_link); + kfree(card); +} + +static const struct component_master_ops apq8096_ops = { + .bind = apq8096_bind, + .unbind = apq8096_unbind, +}; + +static int apq8016_compare_of(struct device *dev, void *data) +{ + return dev->of_node == data; +} + +static void apq8016_release_of(struct device *dev, void *data) +{ + of_node_put(data); +} + +static int add_audio_components(struct device *dev, + struct component_match **matchptr) +{ + struct device_node *np, *platform, *cpu, *node, *dai_node; + + node = dev->of_node; + + for_each_child_of_node(node, np) { + cpu = of_get_child_by_name(np, "cpu"); + if (cpu) { + dai_node = of_parse_phandle(cpu, "sound-dai", 0); + of_node_get(dai_node); + component_match_add_release(dev, matchptr, + apq8016_release_of, + apq8016_compare_of, + dai_node); + } + + platform = of_get_child_by_name(np, "platform"); + if (platform) { + dai_node = of_parse_phandle(platform, "sound-dai", 0); + component_match_add_release(dev, matchptr, + apq8016_release_of, + apq8016_compare_of, + dai_node); + } + } + + return 0; +} + +static int apq8096_platform_probe(struct platform_device *pdev) +{ + struct component_match *match = NULL; + int ret; + + ret = add_audio_components(&pdev->dev, &match); + if (ret) + return ret; + + return component_master_add_with_match(&pdev->dev, &apq8096_ops, match); +} + +static int apq8096_platform_remove(struct platform_device *pdev) +{ + component_master_del(&pdev->dev, &apq8096_ops); + + return 0; +} + +static const struct of_device_id msm_snd_apq8096_dt_match[] = { + {.compatible = "qcom,apq8096-sndcard"}, + {} +}; + +MODULE_DEVICE_TABLE(of, msm_snd_apq8096_dt_match); + +static struct platform_driver msm_snd_apq8096_driver = { + .probe = apq8096_platform_probe, + .remove = apq8096_platform_remove, + .driver = { + .name = "msm-snd-apq8096", + .owner = THIS_MODULE, + .of_match_table = msm_snd_apq8096_dt_match, + }, +}; +module_platform_driver(msm_snd_apq8096_driver); +MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); +MODULE_DESCRIPTION("APQ8096 ASoC Machine Driver"); +MODULE_LICENSE("GPL v2"); |