| Message ID | 20220308072435.22460-2-trevor.wu@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ASoC: mediatek: Add support for MT8195 sound card with max98390 and rt5682 | expand |
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);
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);
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> --- sound/soc/mediatek/mt8195/mt8195-afe-pcm.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)