meta-agl-bsp/meta-renesas/recipes-kernel/linux/linux/hibernation/0007-Add-rcar-i2c-hibernation-code.patch

   1 From 6c133013b75d88d5b4514dfecb3089f830b82d65 Mon Sep 17 00:00:00 2001
   2 From: Yuichi Kusakabe <yuichi.kusakabe@jp.fujitsu.com>
   3 Date: Thu, 18 May 2017 17:35:37 +0900
   4 Subject: [PATCH 07/15] Add rcar-i2c hibernation code
   5
   6 Signed-off-by: Yuichi Kusakabe <yuichi.kusakabe@jp.fujitsu.com>
   7 ---
   8  drivers/i2c/busses/i2c-rcar.c | 38 ++++++++++++++++++++++++++++++++++++++
   9  1 file changed, 38 insertions(+)
  10
  11 diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
  12 index 8242002..c6a5a4b 100644
  13 --- a/drivers/i2c/busses/i2c-rcar.c
  14 +++ b/drivers/i2c/busses/i2c-rcar.c
  15 @@ -754,6 +754,43 @@ static int rcar_i2c_probe(struct platform_device *pdev)
  16
  17         return 0;
  18  }
  19 +static int rcar_i2c_suspend(struct device *dev)
  20 +{
  21 +       struct platform_device *pdev = to_platform_device(dev);
  22 +       struct rcar_i2c_priv *priv = platform_get_drvdata(pdev);
  23 +       pr_debug("suspend: i2c adapter name %s", priv->adap.name);
  24 +       pr_debug("suspend: ICSCR: %08x\n", readl(priv->io + ICSCR));
  25 +       pr_debug("suspend: ICMCR: %08x\n", readl(priv->io + ICMCR));
  26 +       pr_debug("suspend: ICSSR: %08x\n", readl(priv->io + ICSSR));
  27 +       pr_debug("suspend: ICMSR: %08x\n", readl(priv->io + ICMSR));
  28 +       pr_debug("suspend: ICSIER: %08x\n", readl(priv->io + ICSIER));
  29 +       pr_debug("suspend: ICMIER: %08x\n", readl(priv->io + ICMIER));
  30 +       pr_debug("suspend: ICCCR: %08x\n", readl(priv->io + ICCCR));
  31 +       pr_debug("suspend: ICSAR: %08x\n", readl(priv->io + ICSAR));
  32 +       pr_debug("suspend: ICMAR: %08x\n", readl(priv->io + ICMAR));
  33 +       clk_disable(priv->clk);
  34 +       return 0;
  35 +}
  36 +static int rcar_i2c_resume(struct device *dev)
  37 +{
  38 +       struct platform_device *pdev = to_platform_device(dev);
  39 +       struct rcar_i2c_priv *priv = platform_get_drvdata(pdev);
  40 +       clk_enable(priv->clk);
  41 +       pr_debug("resume: i2c adapter name %s", priv->adap.name);
  42 +       pr_debug("resume: ICSCR: %08x\n", readl(priv->io + ICSCR));
  43 +       pr_debug("resume: ICMCR: %08x\n", readl(priv->io + ICMCR));
  44 +       pr_debug("resume: ICSSR: %08x\n", readl(priv->io + ICSSR));
  45 +       pr_debug("resume: ICMSR: %08x\n", readl(priv->io + ICMSR));
  46 +       pr_debug("resume: ICSIER: %08x\n", readl(priv->io + ICSIER));
  47 +       pr_debug("resume: ICMIER: %08x\n", readl(priv->io + ICMIER));
  48 +       pr_debug("resume: ICCCR: %08x\n", readl(priv->io + ICCCR));
  49 +       pr_debug("resume: ICSAR: %08x\n", readl(priv->io + ICSAR));
  50 +       pr_debug("resume: ICMAR: %08x\n", readl(priv->io + ICMAR));
  51 +       return 0;
  52 +}
  53 +static const struct dev_pm_ops rcar_i2c_pm_ops = {
  54 +       SET_SYSTEM_SLEEP_PM_OPS(rcar_i2c_suspend, rcar_i2c_resume)
  55 +};
  56
  57  static int rcar_i2c_remove(struct platform_device *pdev)
  58  {
  59 @@ -780,6 +817,7 @@ static struct platform_driver rcar_i2c_driver = {
  60                 .name   = "i2c-rcar",
  61                 .owner  = THIS_MODULE,
  62                 .of_match_table = rcar_i2c_dt_ids,
  63 +               .pm = &rcar_i2c_pm_ops,
  64         },
  65         .probe          = rcar_i2c_probe,
  66         .remove         = rcar_i2c_remove,
  67 --
  68 1.8.3.1
  69