meta-agl-bsp/meta-renesas/recipes-kernel/linux/linux/hibernation/0015-Add-rcar-usbphy-hibernation-code.patch

   1 From 28393daa686ef43966e3fa1652bcd8d860698ef4 Mon Sep 17 00:00:00 2001
   2 From: Yuichi Kusakabe <yuichi.kusakabe@jp.fujitsu.com>
   3 Date: Thu, 18 May 2017 18:00:39 +0900
   4 Subject: [PATCH 15/15] Add rcar-usbphy hibernation code
   5
   6 Signed-off-by: Yuichi Kusakabe <yuichi.kusakabe@jp.fujitsu.com>
   7 ---
   8  drivers/usb/phy/phy-rcar-gen2-usb.c | 35 +++++++++++++++++++++++++++++++++++
   9  1 file changed, 35 insertions(+)
  10
  11 diff --git a/drivers/usb/phy/phy-rcar-gen2-usb.c b/drivers/usb/phy/phy-rcar-gen2-usb.c
  12 index 9e7205d..05849e7 100644
  13 --- a/drivers/usb/phy/phy-rcar-gen2-usb.c
  14 +++ b/drivers/usb/phy/phy-rcar-gen2-usb.c
  15 @@ -148,6 +148,7 @@ static int rcar_gen2_usb_phy_set_suspend(struct usb_phy *phy, int suspend)
  16
  17         devm_release_mem_region(&pdev->dev, res->start, resource_size(res));
  18         devm_iounmap(&pdev->dev, priv->base);
  19 +       priv->base = NULL;
  20
  21         spin_unlock_irqrestore(&priv->lock, flags);
  22
  23 @@ -178,6 +179,7 @@ static int rcar_gen2_usb_phy_init(struct usb_phy *phy)
  24                 devm_release_mem_region(&pdev->dev, res->start,
  25                                                         resource_size(res));
  26                 devm_iounmap(&pdev->dev, priv->base);
  27 +               priv->base = NULL;
  28                 spin_unlock_irqrestore(&priv->lock, flags);
  29         }
  30         return 0;
  31 @@ -209,6 +211,7 @@ static void rcar_gen2_usb_phy_shutdown(struct usb_phy *phy)
  32                 devm_release_mem_region(&pdev->dev, res->start,
  33                                                         resource_size(res));
  34                 devm_iounmap(&pdev->dev, priv->base);
  35 +               priv->base = NULL;
  36         }
  37  out:
  38         spin_unlock_irqrestore(&priv->lock, flags);
  39 @@ -431,9 +434,41 @@ static int phy_rcar_gen2_pm_resume(struct device *dev)
  40         return 0;
  41  }
  42
  43 +static int phy_rcar_gen2_pm_freeze(struct device *dev)
  44 +{
  45 +       struct rcar_gen2_usb_phy_priv *priv = dev_get_drvdata(dev);
  46 +       pr_info("freeze: %p\n", priv->base);
  47 +
  48 +       return phy_rcar_gen2_pm_suspend(dev);
  49 +}
  50 +
  51 +static int phy_rcar_gen2_pm_restore(struct device *dev)
  52 +{
  53 +       struct rcar_gen2_usb_phy_priv *priv = dev_get_drvdata(dev);
  54 +       struct resource *res;
  55 +
  56 +       res = platform_get_resource(to_platform_device(dev), IORESOURCE_MEM, 0);
  57 +       priv->base = devm_ioremap_resource(dev, res);
  58 +       if (IS_ERR(priv->base)) {
  59 +               pr_info("restore: pointer error %ld\n", PTR_ERR(priv->base));
  60 +               return PTR_ERR(priv->base);
  61 +       }
  62 +       pr_info("restore: %p\n", priv->base);
  63 +       __rcar_gen2_usb_phy_init(priv);
  64 +       devm_release_mem_region(dev, res->start,
  65 +                                               resource_size(res));
  66 +       devm_iounmap(dev, priv->base);
  67 +       priv->base = NULL;
  68 +       return phy_rcar_gen2_pm_resume(dev);
  69 +}
  70 +
  71  static const struct dev_pm_ops phy_rcar_gen2_dev_pm_ops = {
  72         .suspend        = phy_rcar_gen2_pm_suspend,
  73         .resume         = phy_rcar_gen2_pm_resume,
  74 +       .freeze_noirq   = phy_rcar_gen2_pm_freeze,
  75 +       .restore        = phy_rcar_gen2_pm_restore,
  76 +       .thaw           = phy_rcar_gen2_pm_resume,
  77 +       .poweroff       = phy_rcar_gen2_pm_suspend,
  78  };
  79  #endif
  80
  81 --
  82 1.8.3.1
  83