linux-kernel - [RFC PATCH v2 6/7] ASoC: fsl_asrc: register m2m platform device

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Message-Id: <1690265540-25999-7-git-send-email-shengjiu.wang@nxp.com>
Date:   Tue, 25 Jul 2023 14:12:19 +0800
From:   Shengjiu Wang <shengjiu.wang@....com>
To:     hverkuil@...all.nl, sakari.ailus@....fi, tfiga@...omium.org,
        m.szyprowski@...sung.com, mchehab@...nel.org,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        shengjiu.wang@...il.com, Xiubo.Lee@...il.com, festevam@...il.com,
        nicoleotsuka@...il.com, lgirdwood@...il.com, broonie@...nel.org,
        perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: [RFC PATCH v2 6/7] ASoC: fsl_asrc: register m2m platform device

Register m2m platform device, that user can
use M2M feature.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 include/sound/fsl_asrc_common.h |  2 ++
 sound/soc/fsl/fsl_asrc.c        | 12 ++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/include/sound/fsl_asrc_common.h b/include/sound/fsl_asrc_common.h
index 191302711ea6..0f3effa42308 100644
--- a/include/sound/fsl_asrc_common.h
+++ b/include/sound/fsl_asrc_common.h
@@ -69,6 +69,7 @@ struct fsl_asrc_pair {
  * @dma_params_rx: DMA parameters for receive channel
  * @dma_params_tx: DMA parameters for transmit channel
  * @pdev: platform device pointer
+ * @m2m_pdev: m2m platform device pointer
  * @regmap: regmap handler
  * @paddr: physical address to the base address of registers
  * @mem_clk: clock source to access register
@@ -102,6 +103,7 @@ struct fsl_asrc {
 	struct snd_dmaengine_dai_dma_data dma_params_rx;
 	struct snd_dmaengine_dai_dma_data dma_params_tx;
 	struct platform_device *pdev;
+	struct platform_device *m2m_pdev;
 	struct regmap *regmap;
 	unsigned long paddr;
 	struct clk *mem_clk;
diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
index 30190ccb74e7..0d1dfa30271e 100644
--- a/sound/soc/fsl/fsl_asrc.c
+++ b/sound/soc/fsl/fsl_asrc.c
@@ -1198,6 +1198,7 @@ static int fsl_asrc_runtime_suspend(struct device *dev);
 static int fsl_asrc_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
+	struct fsl_asrc_m2m_pdata m2m_pdata;
 	struct fsl_asrc_priv *asrc_priv;
 	struct fsl_asrc *asrc;
 	struct resource *res;
@@ -1380,6 +1381,12 @@ static int fsl_asrc_probe(struct platform_device *pdev)
 		goto err_pm_get_sync;
 	}
 
+	m2m_pdata.asrc = asrc;
+	asrc->m2m_pdev = platform_device_register_data(&pdev->dev,
+						       "fsl_asrc_m2m",
+						       PLATFORM_DEVID_AUTO,
+						       &m2m_pdata,
+						       sizeof(m2m_pdata));
 	return 0;
 
 err_pm_get_sync:
@@ -1392,6 +1399,11 @@ static int fsl_asrc_probe(struct platform_device *pdev)
 
 static void fsl_asrc_remove(struct platform_device *pdev)
 {
+	struct fsl_asrc *asrc = dev_get_drvdata(&pdev->dev);
+
+	if (asrc->m2m_pdev && !IS_ERR(asrc->m2m_pdev))
+		platform_device_unregister(asrc->m2m_pdev);
+
 	pm_runtime_disable(&pdev->dev);
 	if (!pm_runtime_status_suspended(&pdev->dev))
 		fsl_asrc_runtime_suspend(&pdev->dev);
-- 
2.34.1