there maybe more than one i2s module inside chip, and these i2s modules
have different channels features.
for example: there are 3 i2s in rk3066, one support 8 channels playback
and 2 channels capture, but the others only support 2 channels playback
and 2 channels capture.
in order to compatible with these various chips, we add playback and
capture property to specify these values.
there are default channels configuration in driver: 8 channels playback
and 2 channels capture. if not add property, we use the default values.
Signed-off-by: Sugar Zhang <sugar.zh...@rock-chips.com>
---
sound/soc/rockchip/rockchip_i2s.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/sound/soc/rockchip/rockchip_i2s.c
b/sound/soc/rockchip/rockchip_i2s.c
index 58ee645..ec88e94 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -451,6 +451,7 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
struct rk_i2s_dev *i2s;
+ struct snd_soc_dai_driver *soc_dai;
struct resource *res;
void __iomem *regs;
int ret;
@@ -511,17 +512,26 @@ static int rockchip_i2s_probe(struct platform_device
*pdev)
goto err_pm_disable;
}
- /* refine capture channels */
+ soc_dai = devm_kzalloc(&pdev->dev,
+ sizeof(*soc_dai), GFP_KERNEL);
+ if (!soc_dai)
+ return -ENOMEM;
+
+ memcpy(soc_dai, &rockchip_i2s_dai, sizeof(*soc_dai));
+ if (!of_property_read_u32(node, "rockchip,playback-channels", &val)) {
+ if (val >= 2 && val <= 8)
+ soc_dai->playback.channels_max = val;
+ }
+
if (!of_property_read_u32(node, "rockchip,capture-channels", &val)) {
if (val >= 2 && val <= 8)
- rockchip_i2s_dai.capture.channels_max = val;
- else
- rockchip_i2s_dai.capture.channels_max = 2;
+ soc_dai->capture.channels_max = val;
}
ret = devm_snd_soc_register_component(&pdev->dev,
&rockchip_i2s_component,
- &rockchip_i2s_dai, 1);
+ soc_dai, 1);
+
if (ret) {
dev_err(&pdev->dev, "Could not register DAI\n");
goto err_suspend;
--
2.3.6
--
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