[alsa-devel] [RFC PATCH 12/14] ASoC: qcom: add apq8016 sound card support
Srinivas Kandagatla
srinivas.kandagatla at linaro.org
Thu Apr 30 19:18:07 CEST 2015
This patch adds apq8016 machine driver support. This patch was tested on
two apq8016-sbc and msm8916-mtp board for both hdmi and analog audio
features.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
---
sound/soc/qcom/Kconfig | 9 ++
sound/soc/qcom/Makefile | 1 +
sound/soc/qcom/apq8016.c | 214 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 224 insertions(+)
create mode 100644 sound/soc/qcom/apq8016.c
diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
index 2a06d1e..7227383 100644
--- a/sound/soc/qcom/Kconfig
+++ b/sound/soc/qcom/Kconfig
@@ -35,3 +35,12 @@ config SND_SOC_STORM
help
Say Y or M if you want add support for SoC audio on the
Qualcomm Technologies IPQ806X-based Storm board.
+
+config SND_SOC_APQ8016
+ tristate "SoC Audio support for APQ8016 based platforms"
+ depends on SND_SOC_QCOM || ARCH_QCOM || COMPILE_TEST
+ select SND_SOC_LPASS_APQ8016
+ help
+ Support for Qualcomm Technologies LPASS audio block in
+ APQ8016 SOC-based systems.
+ Say Y if you want to use audio devices on MI2S
diff --git a/sound/soc/qcom/Makefile b/sound/soc/qcom/Makefile
index ac76308..589ee9b 100644
--- a/sound/soc/qcom/Makefile
+++ b/sound/soc/qcom/Makefile
@@ -13,3 +13,4 @@ obj-$(CONFIG_SND_SOC_LPASS_APQ8016) += snd-soc-lpass-apq8016.o
snd-soc-storm-objs := storm.o
obj-$(CONFIG_SND_SOC_STORM) += snd-soc-storm.o
+obj-$(CONFIG_SND_SOC_APQ8016) += apq8016.o
diff --git a/sound/soc/qcom/apq8016.c b/sound/soc/qcom/apq8016.c
new file mode 100644
index 0000000..cfb6930
--- /dev/null
+++ b/sound/soc/qcom/apq8016.c
@@ -0,0 +1,214 @@
+/*
+ * Copyright (c) 2015 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+struct apq8016_card_data {
+ void __iomem *mic_iomux;
+ void __iomem *spkr_iomux;
+ struct snd_soc_dai_link dai_link[]; /* dynamically allocated */
+};
+
+#define MIC_CTRL_QUA_WS_SLAVE_SEL_10 BIT(17)
+#define MIC_CTRL_TLMM_SCLK_EN BIT(1)
+#define SPKR_CTL_PRI_WS_SLAVE_SEL_11 (BIT(17) | BIT(16))
+
+static int msm_ext_mi2s_snd_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_card *card = rtd->card;
+ struct apq8016_card_data *pdata = snd_soc_card_get_drvdata(card);
+
+ /* Configure the Quat MI2S to TLMM */
+ writel(readl(pdata->mic_iomux) |
+ MIC_CTRL_QUA_WS_SLAVE_SEL_10 |
+ MIC_CTRL_TLMM_SCLK_EN,
+ pdata->mic_iomux);
+
+ return 0;
+}
+
+static int msm_int_mi2s_snd_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_card *card = rtd->card;
+ struct apq8016_card_data *pdata = snd_soc_card_get_drvdata(card);
+
+ writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11,
+ pdata->spkr_iomux);
+
+ return 0;
+}
+static struct snd_soc_ops qcom_internal_codec_soc_ops = {
+ .startup = msm_int_mi2s_snd_startup,
+};
+
+static struct snd_soc_ops qcom_external_codec_soc_ops = {
+ .startup = msm_ext_mi2s_snd_startup,
+};
+
+static struct snd_soc_card qcom_soc_card = {
+ .name = "apq8016",
+};
+
+static struct apq8016_card_data *qcom_parse_of(struct snd_soc_card *card)
+{
+ int num_links;
+ struct device *dev = card->dev;
+ struct snd_soc_dai_link *dai_link;
+ struct device_node *np, *codec, *cpu, *node = dev->of_node;
+ struct apq8016_card_data *data;
+ char *name;
+ int ret;
+
+ /* Populate links */
+ num_links = of_get_child_count(node);
+
+ /* Allocate the private data and the DAI link array */
+ data = devm_kzalloc(dev, sizeof(*data) + sizeof(*dai_link) * num_links,
+ GFP_KERNEL);
+ if (!data)
+ return ERR_PTR(-ENOMEM);
+
+ card->dai_link = &data->dai_link[0];
+ card->num_links = num_links;
+
+ dai_link = data->dai_link;
+
+ for_each_child_of_node(node, np) {
+ cpu = of_get_child_by_name(np, "cpu");
+ codec = of_get_child_by_name(np, "codec");
+
+ if (!cpu || !codec) {
+ dev_err(dev, "Can't find cpu/codec DT node\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ dai_link->cpu_of_node = of_parse_phandle(cpu, "sound-dai", 0);
+ if (!dai_link->cpu_of_node) {
+ dev_err(card->dev, "error getting cpu phandle\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ dai_link->codec_of_node = of_parse_phandle(codec,
+ "sound-dai",
+ 0);
+ if (!dai_link->codec_of_node) {
+ dev_err(card->dev, "error getting codec phandle\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ ret = snd_soc_of_get_dai_name(cpu, &dai_link->cpu_dai_name);
+ if (ret)
+ return ERR_PTR(ret);
+
+ ret = snd_soc_of_get_dai_name(codec, &dai_link->codec_dai_name);
+ if (ret)
+ return ERR_PTR(ret);
+
+ dai_link->platform_of_node = dai_link->cpu_of_node;
+ /* For now we only support playback */
+ dai_link->playback_only = true;
+
+ if (of_property_read_bool(np, "external")) {
+ name = "HDMI";
+ dai_link->ops = &qcom_external_codec_soc_ops;
+
+ } else {
+ name = "Headset";
+ dai_link->ops = &qcom_internal_codec_soc_ops;
+ }
+
+ dai_link->name = dai_link->stream_name = name;
+
+ dai_link++;
+ }
+
+ return data;
+}
+
+static int qcom_platform_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct snd_soc_card *card = &qcom_soc_card;
+ struct apq8016_card_data *data;
+ struct resource *res;
+ int ret;
+
+ card->dev = dev;
+ data = qcom_parse_of(card);
+ if (PTR_ERR(data)) {
+ dev_err(&pdev->dev, "Error resolving dai links: %d\n",
+ PTR_ERR(data));
+ return PTR_ERR(data);
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mic-iomux");
+ data->mic_iomux = devm_ioremap_resource(dev, res);
+ if (IS_ERR(data->mic_iomux))
+ return PTR_ERR(data->mic_iomux);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "spkr-iomux");
+ data->spkr_iomux = devm_ioremap_resource(dev, res);
+ if (IS_ERR(data->spkr_iomux))
+ return PTR_ERR(data->spkr_iomux);
+
+ platform_set_drvdata(pdev, data);
+ snd_soc_card_set_drvdata(card, data);
+
+ ret = snd_soc_of_parse_card_name(card, "qcom,model");
+ if (ret) {
+ dev_err(&pdev->dev, "Error parsing card name: %d\n", ret);
+ return ret;
+ }
+
+ ret = devm_snd_soc_register_card(&pdev->dev, card);
+ if (ret == -EPROBE_DEFER) {
+ card->dev = NULL;
+ return ret;
+ } else if (ret) {
+ dev_err(&pdev->dev, "Error registering soundcard: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id qcom_device_id[] = {
+ { .compatible = "qcom,apq8016-sndcard" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, qcom_device_id);
+
+static struct platform_driver qcom_platform_driver = {
+ .driver = {
+ .name = "qcom-apq8016",
+ .of_match_table = of_match_ptr(qcom_device_id),
+ },
+ .probe = qcom_platform_probe,
+};
+module_platform_driver(qcom_platform_driver);
+
+MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla at linaro.org");
+MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
+MODULE_LICENSE("GPL v2");
--
1.9.1
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