target/linux/layerscape/patches-5.4/801-audio-0061-ASoC-fsl_sai-support-multi-power-domain.patch

   1 From f11933205182a3da44e7f99d899dd27adafcb6d5 Mon Sep 17 00:00:00 2001
   2 From: Shengjiu Wang <shengjiu.wang@nxp.com>
   3 Date: Tue, 29 Jan 2019 14:51:24 +0800
   4 Subject: [PATCH] ASoC: fsl_sai: support multi power domain
   5
   6 support multi power domain
   7
   8 Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
   9 ---
  10  sound/soc/fsl/fsl_sai.c | 20 ++++++++++++++++++++
  11  1 file changed, 20 insertions(+)
  12
  13 --- a/sound/soc/fsl/fsl_sai.c
  14 +++ b/sound/soc/fsl/fsl_sai.c
  15 @@ -16,6 +16,7 @@
  16  #include <linux/slab.h>
  17  #include <linux/time.h>
  18  #include <linux/pm_qos.h>
  19 +#include <linux/pm_domain.h>
  20  #include <sound/core.h>
  21  #include <sound/dmaengine_pcm.h>
  22  #include <sound/pcm_params.h>
  23 @@ -1357,6 +1358,7 @@ static int fsl_sai_probe(struct platform
  24         int index;
  25         struct regmap_config fsl_sai_regmap_config = fsl_sai_v2_regmap_config;
  26         unsigned long irqflags = 0;
  27 +       int num_domains = 0;
  28
  29         sai = devm_kzalloc(&pdev->dev, sizeof(*sai), GFP_KERNEL);
  30         if (!sai)
  31 @@ -1409,6 +1411,24 @@ static int fsl_sai_probe(struct platform
  32                 }
  33         }
  34
  35 +       num_domains = of_count_phandle_with_args(np, "power-domains",
  36 +                                                "#power-domain-cells");
  37 +       for (i = 0; i < num_domains; i++) {
  38 +               struct device *pd_dev;
  39 +               struct device_link *link;
  40 +
  41 +               pd_dev = dev_pm_domain_attach_by_id(&pdev->dev, i);
  42 +               if (IS_ERR(pd_dev))
  43 +                       return PTR_ERR(pd_dev);
  44 +
  45 +               link = device_link_add(&pdev->dev, pd_dev,
  46 +                       DL_FLAG_STATELESS |
  47 +                       DL_FLAG_PM_RUNTIME |
  48 +                       DL_FLAG_RPM_ACTIVE);
  49 +               if (IS_ERR(link))
  50 +                       return PTR_ERR(link);
  51 +       }
  52 +
  53         sai->pll8k_clk = devm_clk_get(&pdev->dev, "pll8k");
  54         if (IS_ERR(sai->pll8k_clk))
  55                 sai->pll8k_clk = NULL;