From 911abf8b050e76591479d35c928f7e72605067ac Mon Sep 17 00:00:00 2001
From: Akshu Agrawal <akshu.agrawal@amd.com>
Date: Wed, 26 Feb 2020 16:17:44 +0530
Subject: [PATCH] ASoC: amd: Allow I2S wake event after ACP is powerd On
Git-commit: 911abf8b050e76591479d35c928f7e72605067ac
Patch-mainline: v5.7-rc1
References: jsc#SLE-16518
ACP_PME_EN allows wake interrupt to be generated when I2S wake
feature is enabled. On turning ACP On, ACP_PME_EN gets cleared.
Setting the bit back ensures that wake event can be received
when ACP is On.
Signed-off-by: Akshu Agrawal <akshu.agrawal@amd.com>
Link: https://lore.kernel.org/r/20200226104746.208656-1-akshu.agrawal@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
sound/soc/amd/raven/pci-acp3x.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/sound/soc/amd/raven/pci-acp3x.c b/sound/soc/amd/raven/pci-acp3x.c
index da60e2ec5535..f25ce50f1a90 100644
--- a/sound/soc/amd/raven/pci-acp3x.c
+++ b/sound/soc/amd/raven/pci-acp3x.c
@@ -38,8 +38,13 @@ static int acp3x_power_on(void __iomem *acp3x_base)
timeout = 0;
while (++timeout < 500) {
val = rv_readl(acp3x_base + mmACP_PGFSM_STATUS);
- if (!val)
+ if (!val) {
+ /* Set PME_EN as after ACP power On,
+ * PME_EN gets cleared
+ */
+ rv_writel(0x1, acp3x_base + mmACP_PME_EN);
return 0;
+ }
udelay(1);
}
return -ETIMEDOUT;
--
2.16.4