There may be some platforms using fsl-ssi that do not have a DMA driver
with generic DMA bindings. So this patch adds support for the generic
DMA bindings, while still accepting the old "fsl,dma-events" property if
"dmas" is not found.
Signed-off-by: Markus Pargmann <m...@pengutronix.de>
Tested-by: Shawn Guo <shawn....@linaro.org>
---
Notes:
Changes in v5:
- Not passing of_node now, instead setting the parent device
Changes in v4:
- Change TODO comment to a FIXME, to remove the old dma-events property as
soon
as all dma drivers support the generic DMA bindings.
sound/soc/fsl/fsl_ssi.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 2fe4dbd..ed1fbbb 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -803,15 +803,19 @@ static int fsl_ssi_probe(struct platform_device *pdev)
&ssi_private->filter_data_tx;
ssi_private->dma_params_rx.filter_data =
&ssi_private->filter_data_rx;
- /*
- * TODO: This is a temporary solution and should be changed
- * to use generic DMA binding later when the helplers get in.
- */
- ret = of_property_read_u32_array(pdev->dev.of_node,
+ if (!of_property_read_bool(pdev->dev.of_node, "dmas") &&
+ ssi_private->use_dma) {
+ /*
+ * FIXME: This is a temporary solution until all
+ * necessary dma drivers support the generic dma
+ * bindings.
+ */
+ ret = of_property_read_u32_array(pdev->dev.of_node,
"fsl,ssi-dma-events", dma_events, 2);
- if (ret && !ssi_private->use_dma) {
- dev_err(&pdev->dev, "could not get dma events\n");
- goto error_clk;
+ if (ret && ssi_private->use_dma) {
+ dev_err(&pdev->dev, "could not get dma events
but fsl-ssi is configured to use DMA\n");
+ goto error_clk;
+ }
}
shared = of_device_is_compatible(of_get_parent(np),
--
1.8.2.1
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