linux-kernel - Re: [PATCH] drm/hisilicon: Use managed VRAM-helper initialization

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Message-ID: <7baf0a61-bef8-e847-afd2-3a1d05875cdf@suse.de>
Date:   Thu, 3 Dec 2020 06:57:47 +0100
From:   Thomas Zimmermann <tzimmermann@...e.de>
To:     Tian Tao <tiantao6@...ilicon.com>, airlied@...ux.ie,
        daniel@...ll.ch, kraxel@...hat.com, alexander.deucher@....com,
        tglx@...utronix.de, dri-devel@...ts.freedesktop.org,
        xinliang.liu@...aro.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/hisilicon: Use managed VRAM-helper initialization

Hi

Am 03.12.20 um 04:09 schrieb Tian Tao:
> updated to use drmm_vram_helper_init()
> 
> Signed-off-by: Tian Tao <tiantao6@...ilicon.com>

Reviewed-by: Thomas Zimmermann <tzimmermann@...e.de>

As a good follow-up patch, I would suggest to get rig of the entire file 
hibmc_ttm.c. drmm_vram_helper_init() can be called directly from 
hibmc_load(). hibmc_dumb_create() and hibmc_mode_funcs can go to 
hibmc_drm_drv.c.

Best regards
Thomas

> ---
>   drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c |  1 -
>   drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h |  1 -
>   drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c     | 19 +++----------------
>   3 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 8020604..5aea2e9 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> @@ -249,7 +249,6 @@ static int hibmc_unload(struct drm_device *dev)
>   
>   	pci_disable_msi(dev->pdev);
>   	hibmc_kms_fini(priv);
> -	hibmc_mm_fini(priv);
>   	dev->dev_private = NULL;
>   	return 0;
>   }
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
> index 7e0c756..2786de5 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
> @@ -64,7 +64,6 @@ int hibmc_de_init(struct hibmc_drm_private *priv);
>   int hibmc_vdac_init(struct hibmc_drm_private *priv);
>   
>   int hibmc_mm_init(struct hibmc_drm_private *hibmc);
> -void hibmc_mm_fini(struct hibmc_drm_private *hibmc);
>   int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
>   		      struct drm_mode_create_dumb *args);
>   int hibmc_ddc_create(struct drm_device *drm_dev, struct hibmc_connector *connector);
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
> index e84fb81..892d566 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
> @@ -23,15 +23,12 @@
>   
>   int hibmc_mm_init(struct hibmc_drm_private *hibmc)
>   {
> -	struct drm_vram_mm *vmm;
>   	int ret;
>   	struct drm_device *dev = &hibmc->dev;
>   
> -	vmm = drm_vram_helper_alloc_mm(dev,
> -				       pci_resource_start(dev->pdev, 0),
> -				       hibmc->fb_size);
> -	if (IS_ERR(vmm)) {
> -		ret = PTR_ERR(vmm);
> +	ret = drmm_vram_helper_init(dev, pci_resource_start(dev->pdev, 0),
> +				    hibmc->fb_size);
> +	if (ret) {
>   		drm_err(dev, "Error initializing VRAM MM; %d\n", ret);
>   		return ret;
>   	}
> @@ -39,16 +36,6 @@ int hibmc_mm_init(struct hibmc_drm_private *hibmc)
>   	return 0;
>   }
>   
> -void hibmc_mm_fini(struct hibmc_drm_private *hibmc)
> -{
> -	struct drm_device *dev = &hibmc->dev;
> -
> -	if (!dev->vram_mm)
> -		return;
> -
> -	drm_vram_helper_release_mm(dev);
> -}
> -
>   int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
>   		      struct drm_mode_create_dumb *args)
>   {
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer



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