linux-kernel - Re: [PATCH v3 1/5] drm/rockchip: Add basic drm driver

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Date:	Mon, 22 Sep 2014 09:27:33 +0800
From:	Mark yao <mark.yao@...k-chips.com>
To:	David Herrmann <dh.herrmann@...il.com>
CC:	heiko@...ech.de,
	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	David Airlie <airlied@...il.com>,
	Rob Clark <robdclark@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Randy Dunlap <rdunlap@...radead.org>,
	Grant Likely <grant.likely@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	John Stultz <john.stultz@...aro.org>,
	Rom Lemarchand <romlem@...gle.com>, devicetree@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	Linux API <linux-api@...r.kernel.org>,
	linux-rockchip@...ts.infradead.org, dianders@...omium.org,
	Stéphane Marchesin <marcheu@...omium.org>,
	dbehr@...omium.org, Olof Johansson <olof@...om.net>,
	Daniel Kurtz <djkurtz@...omium.org>, xjq@...k-chips.com,
	kfx@...k-chips.com, cym@...k-chips.com, cf@...k-chips.com,
	zyw@...k-chips.com, xxm@...k-chips.com, huangtao@...k-chips.com,
	kever.yang@...k-chips.com, yxj@...k-chips.com, wxt@...k-chips.com,
	xw@...k-chips.com
Subject: Re: [PATCH v3 1/5] drm/rockchip: Add basic drm driver

On 2014年09月19日 21:04, David Herrmann wrote:
> Hi
>
> On Fri, Sep 19, 2014 at 7:47 AM, Mark yao <mark.yao@...k-chips.com> wrote:
> [snip]
>> +static int rockchip_drm_bind(struct device *dev)
>> +{
>> +       return drm_platform_init(&rockchip_drm_driver, to_platform_device(dev));
> Please avoid drm_platform_*() usage. We're about to drop all the
> drm_bus midlayers. See the tegra driver how to do it, but basically
> just this:
OK, I will do it.
> struct drm_device *ddev;
>
> ddev = drm_dev_alloc(&rockchip_drm_driver, &to_platform_device(dev)->dev);
> if (!ddev)
>          return -ENOMEM;
>
> r = drm_dev_set_unique(ddev, dev_name(&ddev->dev));
> if (r < 0) {
>          drm_dev_unref(ddev);
>          return r;
> }
>
> r = drm_dev_register(ddev);
> if (r < 0) {
>          drm_dev_unref(ddev);
>          return r;
> }
>
>> +}
>> +
>> +static void rockchip_drm_unbind(struct device *dev)
>> +{
>> +       drm_put_dev(dev_get_drvdata(dev));
> Please use:
>
> struct drm_device *ddev = dev_get_drvdata(dev);
>
> drm_dev_unregister(ddev);
> drm_dev_unref(ddev);
>
>
> Thanks
> David
>
>
>


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