Il 08/03/22 08:24, Trevor Wu ha scritto:
Audio hardware is possibly used in the firmware stage, so resetting audio hardware before regcache records default register values is required.
Signed-off-by: Trevor Wu trevor.wu@mediatek.com
Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com
sound/soc/mediatek/mt8195/mt8195-afe-pcm.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c b/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c index 550636500949..72b2c6d629b9 100644 --- a/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c +++ b/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c @@ -16,6 +16,7 @@ #include <linux/of_platform.h> #include <linux/of_reserved_mem.h> #include <linux/pm_runtime.h> +#include <linux/reset.h> #include "mt8195-afe-common.h" #include "mt8195-afe-clk.h" #include "mt8195-reg.h" @@ -3056,6 +3057,7 @@ static int mt8195_afe_pcm_dev_probe(struct platform_device *pdev) struct mtk_base_afe *afe; struct mt8195_afe_private *afe_priv; struct device *dev = &pdev->dev;
- struct reset_control *rstc; int i, irq_id, ret; struct snd_soc_component *component;
@@ -3092,6 +3094,20 @@ static int mt8195_afe_pcm_dev_probe(struct platform_device *pdev) return ret; }
/* reset controller to reset audio regs before regmap cache */
rstc = devm_reset_control_get_exclusive(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;}
spin_lock_init(&afe_priv->afe_ctrl_lock);
mutex_init(&afe->irq_alloc_lock);