openwrt/target/linux/layerscape/patches-5.4/801-audio-0030-MLK-15960-2-ASoC-fsl_sai-refine-the-pm-runtime-funct.patch
Yangbo Lu cddd459140 layerscape: add patches-5.4
Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/

For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.

The patches are sorted into the following categories:
  301-arch-xxxx
  302-dts-xxxx
  303-core-xxxx
  701-net-xxxx
  801-audio-xxxx
  802-can-xxxx
  803-clock-xxxx
  804-crypto-xxxx
  805-display-xxxx
  806-dma-xxxx
  807-gpio-xxxx
  808-i2c-xxxx
  809-jailhouse-xxxx
  810-keys-xxxx
  811-kvm-xxxx
  812-pcie-xxxx
  813-pm-xxxx
  814-qe-xxxx
  815-sata-xxxx
  816-sdhc-xxxx
  817-spi-xxxx
  818-thermal-xxxx
  819-uart-xxxx
  820-usb-xxxx
  821-vfio-xxxx

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
2020-05-07 12:53:06 +02:00

37 lines
1.2 KiB
Diff

From 136762e82a9c4974c15b0525245092d11a825cee Mon Sep 17 00:00:00 2001
From: Shengjiu Wang <shengjiu.wang@freescale.com>
Date: Wed, 12 Jul 2017 18:00:58 +0800
Subject: [PATCH] MLK-15960-2: ASoC: fsl_sai: refine the pm runtime function
In imx8qm/imx8qxp, the power domain of IP is enabled when
pm_runtime_get_sync() is called, and disabled when pm_runtime
_put_sync() is called. when power domain is disabled, the value
of registers will lost, so we need to use the regcache_sync()
to restore the registers in fsl_sai_runtime_resume.
Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
---
sound/soc/fsl/fsl_sai.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -1096,6 +1096,8 @@ static int fsl_sai_probe(struct platform
pm_runtime_enable(&pdev->dev);
+ regcache_cache_only(sai->regmap, true);
+
ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component,
&fsl_sai_dai, 1);
if (ret)
@@ -1139,6 +1141,8 @@ static int fsl_sai_runtime_suspend(struc
{
struct fsl_sai *sai = dev_get_drvdata(dev);
+ regcache_cache_only(sai->regmap, true);
+
if (sai->mclk_streams & BIT(SNDRV_PCM_STREAM_CAPTURE))
clk_disable_unprepare(sai->mclk_clk[sai->mclk_id[0]]);