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ASoC: mt8183: fix audio playback slowly after playback during bootup 

Before regmap_reinit_cache we must reset audio regs as default values.
So we use reset controller unit(toprgu) to reset audio hw.

Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Reviewed-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
Link: https://lore.kernel.org/r/1569580317-21181-5-git-send-email-jiaxin.yu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jiaxin Yu 2019-09-27 18:31:57 +08:00 committed by Mark Brown
parent 8d6aa1367a
commit 9e985503ee
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GPG Key ID: 24D68B725D5487D0
1 changed files with 15 additions and 0 deletions
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15
sound/soc/mediatek/mt8183/mt8183-afe-pcm.c
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@ -11,6 +11,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
#include "mt8183-afe-common.h"
#include "mt8183-afe-clk.h"
@ -1089,6 +1090,7 @@ static int mt8183_afe_pcm_dev_probe(struct platform_device *pdev)
struct mtk_base_afe *afe;
struct mt8183_afe_private *afe_priv;
struct device *dev;
struct reset_control *rstc;
int i, irq_id, ret;
afe = devm_kzalloc(&pdev->dev, sizeof(*afe), GFP_KERNEL);
@ -1126,6 +1128,19 @@ static int mt8183_afe_pcm_dev_probe(struct platform_device *pdev)
return ret;
}
rstc = devm_reset_control_get(dev, "audiosys");
if (IS_ERR(rstc)) {
ret = PTR_ERR(rstc);
dev_err(dev, "could not get audiosys reset:%d\n", ret);
return ret;
}
ret = reset_control_reset(rstc);
if (ret) {
dev_err(dev, "failed to trigger audio reset:%d\n", ret);
return ret;
}
/* enable clock for regcache get default value from hw */
afe_priv->pm_runtime_bypass_reg_ctl = true;
pm_runtime_get_sync(&pdev->dev);