linux-kernel - [PATCH 1/3] firmware: imx: Introduce imx_dsp_setup

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Message-Id: <20200708073556.19188-2-daniel.baluta@oss.nxp.com>
Date:   Wed,  8 Jul 2020 10:35:54 +0300
From:   Daniel Baluta <daniel.baluta@....nxp.com>
To:     shawnguo@...nel.org, kernel@...gutronix.de
Cc:     s.hauer@...gutronix.de, festevam@...il.com, linux-imx@....com,
        linux@...pel-privat.de, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] firmware: imx: Introduce imx_dsp_setup_channels

From: Daniel Baluta <daniel.baluta@....com>

Create a separate function that sets up DSP mailbox channels
so that imx_dsp_probe function will be easier to read.

Signed-off-by: Daniel Baluta <daniel.baluta@....com>
---
 drivers/firmware/imx/imx-dsp.c | 41 +++++++++++++++++++++-------------
 1 file changed, 26 insertions(+), 15 deletions(-)

diff --git a/drivers/firmware/imx/imx-dsp.c b/drivers/firmware/imx/imx-dsp.c
index 4265e9dbed84..a3a018c87b52 100644
--- a/drivers/firmware/imx/imx-dsp.c
+++ b/drivers/firmware/imx/imx-dsp.c
@@ -60,22 +60,15 @@ static void imx_dsp_handle_rx(struct mbox_client *c, void *msg)
 	}
 }
 
-static int imx_dsp_probe(struct platform_device *pdev)
+static int imx_dsp_setup_channels(struct imx_dsp_ipc *dsp_ipc)
 {
-	struct device *dev = &pdev->dev;
-	struct imx_dsp_ipc *dsp_ipc;
+	struct device *dev = dsp_ipc->dev;
 	struct imx_dsp_chan *dsp_chan;
 	struct mbox_client *cl;
 	char *chan_name;
 	int ret;
 	int i, j;
 
-	device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
-
-	dsp_ipc = devm_kzalloc(dev, sizeof(*dsp_ipc), GFP_KERNEL);
-	if (!dsp_ipc)
-		return -ENOMEM;
-
 	for (i = 0; i < DSP_MU_CHAN_NUM; i++) {
 		if (i < 2)
 			chan_name = kasprintf(GFP_KERNEL, "txdb%d", i);
@@ -108,12 +101,6 @@ static int imx_dsp_probe(struct platform_device *pdev)
 		kfree(chan_name);
 	}
 
-	dsp_ipc->dev = dev;
-
-	dev_set_drvdata(dev, dsp_ipc);
-
-	dev_info(dev, "NXP i.MX DSP IPC initialized\n");
-
 	return 0;
 out:
 	kfree(chan_name);
@@ -125,6 +112,30 @@ static int imx_dsp_probe(struct platform_device *pdev)
 	return ret;
 }
 
+static int imx_dsp_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct imx_dsp_ipc *dsp_ipc;
+	int ret;
+
+	device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
+
+	dsp_ipc = devm_kzalloc(dev, sizeof(*dsp_ipc), GFP_KERNEL);
+	if (!dsp_ipc)
+		return -ENOMEM;
+
+	dsp_ipc->dev = dev;
+	dev_set_drvdata(dev, dsp_ipc);
+
+	ret = imx_dsp_setup_channels(dsp_ipc);
+	if (ret < 0)
+		return ret;
+
+	dev_info(dev, "NXP i.MX DSP IPC initialized\n");
+
+	return 0;
+}
+
 static int imx_dsp_remove(struct platform_device *pdev)
 {
 	struct imx_dsp_chan *dsp_chan;
-- 
2.17.1