[alsa-devel] [PATCH v2 14/15] ASoC: qcom: apq8096: Add db820c machine driver

[srinivas.kandagatla at linaro.org]

From: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>

uThis patch adds support to DB820c machine driver.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
---
 sound/soc/qcom/Kconfig   |   9 +++-
 sound/soc/qcom/apq8096.c | 124 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 132 insertions(+), 1 deletion(-)
 create mode 100644 sound/soc/qcom/apq8096.c

diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
index ecd1e4ba834d..748ccc3edefa 100644
--- a/sound/soc/qcom/Kconfig
+++ b/sound/soc/qcom/Kconfig
@@ -72,7 +72,6 @@ config SND_SOC_QDSP6_ASM_DAI
 	tristate
 	default n
 
-
 config SND_SOC_QDSP6
 	tristate "SoC ALSA audio driver for QDSP6"
 	select SND_SOC_QDSP6_AFE
@@ -87,3 +86,11 @@ 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"
+	select SND_SOC_QDSP6V2
+	default n
+	help
+	 To add support for SoC audio on MSM8996 and APQ8096 boards
+
diff --git a/sound/soc/qcom/apq8096.c b/sound/soc/qcom/apq8096.c
new file mode 100644
index 000000000000..5b2036317f71
--- /dev/null
+++ b/sound/soc/qcom/apq8096.c
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2017 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/clk.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <linux/dma-mapping.h>
+#include <sound/pcm.h>
+
+int msm8996_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 struct snd_soc_dai_link msm8996_dai_links[] = {
+	/* FrontEnd DAI Links */
+	{
+		.name		= "MultiMedia1 Playback",
+		.stream_name	= "MultiMedia1",
+		.cpu_dai_name	= "MM_DL1",
+		.platform_name	= "q6asm_dai",
+		.dynamic	= 1,
+		.dpcm_playback	= 1,
+
+		.codec_dai_name	= "snd-soc-dummy-dai",
+		.codec_name = "snd-soc-dummy",
+	},
+	/* Backend DAI Links */
+	{
+		.name		= "HDMI Playback",
+		.stream_name	= "q6afe_dai",
+		.cpu_dai_name	= "HDMI",
+		.platform_name	= "q6routing",
+		.no_pcm		= 1,
+		.dpcm_playback	= 1,
+		.be_hw_params_fixup = msm8996_be_hw_params_fixup,
+		.codec_dai_name	= "i2s-hifi",
+		.codec_name = "hdmi-audio-codec.0.auto",
+	},
+};
+
+static int apq8096_sbc_parse_of(struct snd_soc_card *card)
+{
+	struct device *dev = card->dev;
+	int ret;
+
+	ret = snd_soc_of_parse_card_name(card, "qcom,model");
+	if (ret)
+		dev_err(dev, "Error parsing card name: %d\n", ret);
+
+	return ret;
+}
+
+static int msm_snd_apq8096_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct snd_soc_card *card;
+
+	card = devm_kzalloc(&pdev->dev, sizeof(*card), GFP_KERNEL);
+	if (!card)
+		return -ENOMEM;
+
+	card->dev = &pdev->dev;
+
+	ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
+	card->dai_link = msm8996_dai_links;
+	card->num_links	= ARRAY_SIZE(msm8996_dai_links);
+
+	ret = apq8096_sbc_parse_of(card);
+	if (ret) {
+		dev_err(&pdev->dev, "Error parsing OF data\n");
+		return ret;
+	}
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret)
+		dev_err(&pdev->dev, "sound card register failed (%d)!\n", ret);
+	else
+		dev_err(&pdev->dev, "sound card register Sucessfull\n");
+
+	return ret;
+}
+
+static const struct of_device_id msm_snd_apq8096_dt_match[] = {
+	{.compatible = "qcom,apq8096-sndcard"},
+	{}
+};
+
+static struct platform_driver msm_snd_apq8096_driver = {
+	.probe  = msm_snd_apq8096_probe,
+	.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 at linaro.org");
+MODULE_DESCRIPTION("APQ8096 ASoC Machine Driver");
+MODULE_LICENSE("GPL v2");
-- 
2.15.0