In certain projects, it is necessary to utilize the reserved memory
region for audio dma. The patch takes into account the dts property
'memory-region', allowing for the specification of memory for afe memif
through device tree.
Signed-off-by: Trevor Wu <[email protected]>
---
sound/soc/mediatek/mt8188/mt8188-afe-pcm.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/sound/soc/mediatek/mt8188/mt8188-afe-pcm.c b/sound/soc/mediatek/mt8188/mt8188-afe-pcm.c
index 6a24b339444b..5e14655c5617 100644
--- a/sound/soc/mediatek/mt8188/mt8188-afe-pcm.c
+++ b/sound/soc/mediatek/mt8188/mt8188-afe-pcm.c
@@ -16,6 +16,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
+#include <linux/of_reserved_mem.h>
#include <linux/pm_runtime.h>
#include <linux/soc/mediatek/infracfg.h>
#include <linux/reset.h>
@@ -3193,11 +3194,15 @@ static int mt8188_afe_pcm_dev_probe(struct platform_device *pdev)
{
struct mtk_base_afe *afe;
struct mt8188_afe_private *afe_priv;
- struct device *dev;
+ struct device *dev = &pdev->dev;
struct reset_control *rstc;
struct regmap *infra_ao;
int i, irq_id, ret;
+ ret = of_reserved_mem_device_init(dev);
+ if (ret)
+ dev_dbg(dev, "failed to assign memory region: %d\n", ret);
+
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(33));
if (ret)
return ret;
@@ -3213,7 +3218,6 @@ static int mt8188_afe_pcm_dev_probe(struct platform_device *pdev)
afe_priv = afe->platform_priv;
afe->dev = &pdev->dev;
- dev = afe->dev;
afe->base_addr = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(afe->base_addr))
--
2.18.0