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From f11933205182a3da44e7f99d899dd27adafcb6d5 Mon Sep 17 00:00:00 2001
From: Shengjiu Wang <shengjiu.wang@nxp.com>
Date: Tue, 29 Jan 2019 14:51:24 +0800
Subject: [PATCH] ASoC: fsl_sai: support multi power domain
support multi power domain
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
---
sound/soc/fsl/fsl_sai.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -16,6 +16,7 @@
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/pm_qos.h>
+#include <linux/pm_domain.h>
#include <sound/core.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm_params.h>
@@ -1357,6 +1358,7 @@ static int fsl_sai_probe(struct platform
int index;
struct regmap_config fsl_sai_regmap_config = fsl_sai_v2_regmap_config;
unsigned long irqflags = 0;
+ int num_domains = 0;
sai = devm_kzalloc(&pdev->dev, sizeof(*sai), GFP_KERNEL);
if (!sai)
@@ -1409,6 +1411,24 @@ static int fsl_sai_probe(struct platform
}
}
+ num_domains = of_count_phandle_with_args(np, "power-domains",
+ "#power-domain-cells");
+ for (i = 0; i < num_domains; i++) {
+ struct device *pd_dev;
+ struct device_link *link;
+
+ pd_dev = dev_pm_domain_attach_by_id(&pdev->dev, i);
+ if (IS_ERR(pd_dev))
+ return PTR_ERR(pd_dev);
+
+ link = device_link_add(&pdev->dev, pd_dev,
+ DL_FLAG_STATELESS |
+ DL_FLAG_PM_RUNTIME |
+ DL_FLAG_RPM_ACTIVE);
+ if (IS_ERR(link))
+ return PTR_ERR(link);
+ }
+
sai->pll8k_clk = devm_clk_get(&pdev->dev, "pll8k");
if (IS_ERR(sai->pll8k_clk))
sai->pll8k_clk = NULL;
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