Commit 65675842 authored by Olivier Dautricourt's avatar Olivier Dautricourt Committed by Vinod Koul
Browse files

dmaengine: altera-msgdma: add OF support 



This driver had no device tree support.

- add compatible field "altr,socfpga-msgdma"
- register dma controller with of_dma_controller_register

Reviewed-by: default avatarStefan Roese <sr@denx.de>
Signed-off-by: default avatarOlivier Dautricourt <olivier.dautricourt@orolia.com>
Link: https://lore.kernel.org/r/7459635ba093d87b6bf12413cf7cfe09f6e3019b.1623251990.git.olivier.dautricourt@orolia.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent ce91c622

drivers/dma/altera-msgdma.c

+20 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/slab.h>

#include <linux/of_dma.h>



#include "dmaengine.h"
@@ -888,6 +889,13 @@ static int msgdma_probe(struct platform_device *pdev) 
	if (ret)

		goto fail;



	ret = of_dma_controller_register(pdev->dev.of_node,

					 of_dma_xlate_by_chan_id, dma_dev);

	if (ret == -EINVAL)

		dev_warn(&pdev->dev, "device was not probed from DT");

	else if (ret && ret != -ENODEV)

		goto fail;



	dev_notice(&pdev->dev, "Altera mSGDMA driver probe success\n");



	return 0;
@@ -908,6 +916,8 @@ static int msgdma_remove(struct platform_device *pdev) 
{

	struct msgdma_device *mdev = platform_get_drvdata(pdev);



	if (pdev->dev.of_node)

		of_dma_controller_free(pdev->dev.of_node);

	dma_async_device_unregister(&mdev->dmadev);

	msgdma_dev_remove(mdev);
@@ -916,9 +926,19 @@ static int msgdma_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_OF

static const struct of_device_id msgdma_match[] = {

	{ .compatible = "altr,socfpga-msgdma", },

	{ }

};



MODULE_DEVICE_TABLE(of, msgdma_match);

#endif



static struct platform_driver msgdma_driver = {

	.driver = {

		.name = "altera-msgdma",

		.of_match_table = of_match_ptr(msgdma_match),

	},

	.probe = msgdma_probe,

	.remove = msgdma_remove,