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    Subject[PATCH v5 22/23] ASoC: qcom: apq8096: Add db820c machine driver
    Date
    From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

    This patch adds support to DB820c machine driver.

    Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
    ---
    sound/soc/qcom/Kconfig | 9 ++
    sound/soc/qcom/Makefile | 2 +
    sound/soc/qcom/apq8096.c | 238 +++++++++++++++++++++++++++++++++++++++++++++++
    3 files changed, 249 insertions(+)
    create mode 100644 sound/soc/qcom/apq8096.c

    diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
    index 5bdf39f6003f..9d8007e2f3cf 100644
    --- a/sound/soc/qcom/Kconfig
    +++ b/sound/soc/qcom/Kconfig
    @@ -84,3 +84,12 @@ config SND_SOC_QDSP6
    This will enable sound soc platform specific
    audio drivers. This includes q6asm, q6adm,
    q6afe interfaces to DSP using apr.
    +
    +config SND_SOC_MSM8996
    + tristate "SoC Machine driver for MSM8996 and APQ8096 boards"
    + depends on QCOM_APR
    + select SND_SOC_QDSP6
    + help
    + Support for Qualcomm Technologies LPASS audio block in
    + APQ8096 SoC-based systems.
    + Say Y if you want to use audio device on this SoCs
    diff --git a/sound/soc/qcom/Makefile b/sound/soc/qcom/Makefile
    index 0276717917c0..206945bb9ba1 100644
    --- a/sound/soc/qcom/Makefile
    +++ b/sound/soc/qcom/Makefile
    @@ -13,9 +13,11 @@ obj-$(CONFIG_SND_SOC_LPASS_APQ8016) += snd-soc-lpass-apq8016.o
    # Machine
    snd-soc-storm-objs := storm.o
    snd-soc-apq8016-sbc-objs := apq8016_sbc.o
    +snd-soc-apq8096-objs := apq8096.o

    obj-$(CONFIG_SND_SOC_STORM) += snd-soc-storm.o
    obj-$(CONFIG_SND_SOC_APQ8016_SBC) += snd-soc-apq8016-sbc.o
    +obj-$(CONFIG_SND_SOC_MSM8996) += snd-soc-apq8096.o

    #DSP lib
    obj-$(CONFIG_SND_SOC_QDSP6) += qdsp6/
    diff --git a/sound/soc/qcom/apq8096.c b/sound/soc/qcom/apq8096.c
    new file mode 100644
    index 000000000000..73abf862db94
    --- /dev/null
    +++ b/sound/soc/qcom/apq8096.c
    @@ -0,0 +1,238 @@
    +// 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, *codec, *platform, *cpu, *node;
    + 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;
    + }
    +
    + node = dev->of_node;
    +
    + /* DAPM routes */
    + if (of_property_read_bool(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(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(node, np) {
    + cpu = of_get_child_by_name(np, "cpu");
    + platform = of_get_child_by_name(np, "platform");
    + codec = of_get_child_by_name(np, "codec");
    +
    + if (!cpu) {
    + dev_err(dev, "Can't find cpu DT node\n");
    + return -EINVAL;
    + }
    +
    + 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");
    + return -EINVAL;
    + }
    +
    + ret = snd_soc_of_get_dai_name(cpu, &link->cpu_dai_name);
    + if (ret) {
    + dev_err(card->dev, "error getting cpu dai name\n");
    + return ret;
    + }
    +
    + 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");
    + return -EINVAL;
    + }
    +
    + ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
    + if (ret < 0) {
    + dev_err(card->dev, "codec dai not found\n");
    + return ret;
    + }
    + link->no_pcm = 1;
    + link->ignore_suspend = 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;
    + }
    +
    + ret = of_property_read_string(np, "link-name", &link->name);
    + if (ret) {
    + dev_err(card->dev, "error getting codec dai_link name\n");
    + return ret;
    + }
    +
    + link->dpcm_playback = 1;
    + link->dpcm_capture = 1;
    + link->stream_name = link->name;
    + 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");
    + component_unbind_all(dev, card);
    + return ret;
    + }
    +
    + return snd_soc_register_card(card);
    +}
    +
    +static void apq8096_unbind(struct device *dev)
    +{
    + struct snd_soc_card *card = dev_get_drvdata(dev);
    +
    + component_unbind_all(dev, card);
    + snd_soc_unregister_card(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");
    --
    2.16.2
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