target/linux/bcm27xx/patches-5.15/950-0157-drm-v3d-Hook-up-the-runtime-PM-ops.patch

   1 From 9d058ec3839e19637efc1957cdbbdafd69878acb Mon Sep 17 00:00:00 2001
   2 From: Eric Anholt <eric@anholt.net>
   3 Date: Mon, 14 Jan 2019 14:47:57 -0800
   4 Subject: [PATCH] drm/v3d: Hook up the runtime PM ops.
   5
   6 In translating the runtime PM code from vc4, I missed the ".pm"
   7 assignment to actually connect them up.  Fixes missing MMU setup if
   8 runtime PM resets V3D.
   9
  10 Signed-off-by: Eric Anholt <eric@anholt.net>
  11 (cherry picked from commit ca197699af29baa8236c74c53d4904ca8957ee06)
  12 ---
  13  drivers/gpu/drm/v3d/v3d_drv.c | 37 +++++++++++++++++++++++++++++++++++
  14  1 file changed, 37 insertions(+)
  15
  16 --- a/drivers/gpu/drm/v3d/v3d_drv.c
  17 +++ b/drivers/gpu/drm/v3d/v3d_drv.c
  18 @@ -38,6 +38,42 @@
  19  #define DRIVER_MINOR 0
  20  #define DRIVER_PATCHLEVEL 0
  21
  22 +#ifdef CONFIG_PM
  23 +static int v3d_runtime_suspend(struct device *dev)
  24 +{
  25 +       struct drm_device *drm = dev_get_drvdata(dev);
  26 +       struct v3d_dev *v3d = to_v3d_dev(drm);
  27 +
  28 +       v3d_irq_disable(v3d);
  29 +
  30 +       clk_disable_unprepare(v3d->clk);
  31 +
  32 +       return 0;
  33 +}
  34 +
  35 +static int v3d_runtime_resume(struct device *dev)
  36 +{
  37 +       struct drm_device *drm = dev_get_drvdata(dev);
  38 +       struct v3d_dev *v3d = to_v3d_dev(drm);
  39 +       int ret;
  40 +
  41 +       ret = clk_prepare_enable(v3d->clk);
  42 +       if (ret != 0)
  43 +               return ret;
  44 +
  45 +       /* XXX: VPM base */
  46 +
  47 +       v3d_mmu_set_page_table(v3d);
  48 +       v3d_irq_enable(v3d);
  49 +
  50 +       return 0;
  51 +}
  52 +#endif
  53 +
  54 +static const struct dev_pm_ops v3d_pm_ops = {
  55 +       SET_RUNTIME_PM_OPS(v3d_runtime_suspend, v3d_runtime_resume, NULL)
  56 +};
  57 +
  58  static int v3d_get_param_ioctl(struct drm_device *dev, void *data,
  59                                struct drm_file *file_priv)
  60  {
  61 @@ -332,6 +368,7 @@ static struct platform_driver v3d_platfo
  62         .driver         = {
  63                 .name   = "v3d",
  64                 .of_match_table = v3d_of_match,
  65 +               .pm = &v3d_pm_ops,
  66         },
  67  };
  68