linux-kernel - Re: [PATCH] gpu/drm/hisilicon: Convert drm_atomic_helper

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Date:   Tue, 11 Sep 2018 14:04:57 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     xinliang <z.liuxinliang@...ilicon.com>,
        Zou Rongrong <zourongrong@...il.com>,
        kong.kongxinwei@...ilicon.com, puck.chen@...ilicon.com,
        airlied@...ux.ie, Ajit Linux <ajitn.linux@...il.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Brajeswar Ghosh <brajeswar.linux@...il.com>,
        Sabyasachi Gupta <sabyasachi.linux@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Subject: Re: [PATCH] gpu/drm/hisilicon: Convert drm_atomic_helper_suspend/resume()

On Mon, Aug 6, 2018 at 8:16 PM Souptick Joarder <jrdr.linux@...il.com> wrote:
>
> convert drm_atomic_helper_suspend/resume() to use
> drm_mode_config_helper_suspend/resume().
>
> Fixed one sparse warning by making hibmc_drm_interrupt
> static.
>
> Signed-off-by: Ajit Negi <ajitn.linux@...il.com>
> Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
> Reviewed-by: Xinliang Liu <z.liuxinliang@...ilicon.com>

Can we get this patch in queue for 4.20 ??

> ---
> v2: remove ret variable from both suspend and resume.
>     remove suspend_state from hibmc_drm_private struct.
>
>  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 20 +++-----------------
>  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h |  1 -
>  2 files changed, 3 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> index d4f6f1f..ee24480 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> @@ -37,7 +37,7 @@
>         .llseek         = no_llseek,
>  };
>
> -irqreturn_t hibmc_drm_interrupt(int irq, void *arg)
> +static irqreturn_t hibmc_drm_interrupt(int irq, void *arg)
>  {
>         struct drm_device *dev = (struct drm_device *)arg;
>         struct hibmc_drm_private *priv =
> @@ -74,30 +74,16 @@ static int __maybe_unused hibmc_pm_suspend(struct device *dev)
>  {
>         struct pci_dev *pdev = to_pci_dev(dev);
>         struct drm_device *drm_dev = pci_get_drvdata(pdev);
> -       struct hibmc_drm_private *priv = drm_dev->dev_private;
> -
> -       drm_kms_helper_poll_disable(drm_dev);
> -       priv->suspend_state = drm_atomic_helper_suspend(drm_dev);
> -       if (IS_ERR(priv->suspend_state)) {
> -               DRM_ERROR("drm_atomic_helper_suspend failed: %ld\n",
> -                         PTR_ERR(priv->suspend_state));
> -               drm_kms_helper_poll_enable(drm_dev);
> -               return PTR_ERR(priv->suspend_state);
> -       }
>
> -       return 0;
> +       return drm_mode_config_helper_suspend(drm_dev);
>  }
>
>  static int  __maybe_unused hibmc_pm_resume(struct device *dev)
>  {
>         struct pci_dev *pdev = to_pci_dev(dev);
>         struct drm_device *drm_dev = pci_get_drvdata(pdev);
> -       struct hibmc_drm_private *priv = drm_dev->dev_private;
>
> -       drm_atomic_helper_resume(drm_dev, priv->suspend_state);
> -       drm_kms_helper_poll_enable(drm_dev);
> -
> -       return 0;
> +       return drm_mode_config_helper_resume(drm_dev);
>  }
>
>  static const struct dev_pm_ops hibmc_pm_ops = {
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
> index e195521..45c25a4 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
> @@ -47,7 +47,6 @@ struct hibmc_drm_private {
>         /* drm */
>         struct drm_device  *dev;
>         bool mode_config_initialized;
> -       struct drm_atomic_state *suspend_state;
>
>         /* ttm */
>         struct drm_global_reference mem_global_ref;
> --
> 1.9.1
>