diff options
| author | Olivier Dautricourt <olivier.dautricourt@orolia.com> | 2021-06-09 17:21:46 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-06-16 16:14:28 +0530 |
| commit | 656758425f98693bd61a08f6b51c4c5aa26c9d50 (patch) | |
| tree | df1ea62aaf5fb639fbed4eaaf0883cd21a71efe5 /drivers/dma | |
| parent | ce91c6220947e4efa0db564cc50baa0151d8872b (diff) | |
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: Stefan Roese <sr@denx.de>
Signed-off-by: Olivier Dautricourt <olivier.dautricourt@orolia.com>
Link: https://lore.kernel.org/r/7459635ba093d87b6bf12413cf7cfe09f6e3019b.1623251990.git.olivier.dautricourt@orolia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/altera-msgdma.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/dma/altera-msgdma.c b/drivers/dma/altera-msgdma.c index 9a841ce5f0c5..0fe0676f8e1d 100644 --- a/drivers/dma/altera-msgdma.c +++ b/drivers/dma/altera-msgdma.c @@ -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, |