From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753013AbcBOL1o (ORCPT ); Mon, 15 Feb 2016 06:27:44 -0500 Received: from mailgw02.mediatek.com ([210.61.82.184]:1303 "EHLO mailgw02.hq.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751122AbcBOL1m (ORCPT ); Mon, 15 Feb 2016 06:27:42 -0500 Message-ID: <1455535656.27088.6.camel@mtksdaap41> Subject: Re: [PATCH v4 2/8] [media] VPU: mediatek: support Mediatek VPU From: tiffany lin To: Hans Verkuil CC: Hans Verkuil , , "Rob Herring" , Mauro Carvalho Chehab , Matthias Brugger , Daniel Kurtz , Pawel Osciak , Eddie Huang , Yingjoe Chen , , , , , , , Andrew-CT Chen Date: Mon, 15 Feb 2016 19:27:36 +0800 In-Reply-To: <56C1A4C6.7040601@xs4all.nl> References: <1454585703-42428-1-git-send-email-tiffany.lin@mediatek.com> <1454585703-42428-2-git-send-email-tiffany.lin@mediatek.com> <1454585703-42428-3-git-send-email-tiffany.lin@mediatek.com> <56C1A4C6.7040601@xs4all.nl> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 Content-Transfer-Encoding: 7bit MIME-Version: 1.0 X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2016-02-15 at 11:13 +0100, Hans Verkuil wrote: > On 02/04/2016 12:34 PM, Tiffany Lin wrote: > > The VPU driver for hw video codec embedded in Mediatek's MT8173 SOCs. > > It is able to handle video decoding/encoding of in a range of formats. > > The driver provides with VPU firmware download, memory management and > > the communication interface between CPU and VPU. > > For VPU initialization, it will create virtual memory for CPU access and > > IOMMU address for vcodec hw device access. When a decode/encode instance > > opens a device node, vpu driver will download vpu firmware to the device. > > A decode/encode instant will decode/encode a frame using VPU > > interface to interrupt vpu to handle decoding/encoding jobs. > > > > Signed-off-by: Andrew-CT Chen > > Signed-off-by: Tiffany Lin > > --- > > drivers/media/platform/Kconfig | 9 + > > drivers/media/platform/Makefile | 2 + > > drivers/media/platform/mtk-vpu/Makefile | 1 + > > drivers/media/platform/mtk-vpu/mtk_vpu.c | 994 ++++++++++++++++++++++++++++++ > > drivers/media/platform/mtk-vpu/mtk_vpu.h | 167 +++++ > > 5 files changed, 1173 insertions(+) > > create mode 100644 drivers/media/platform/mtk-vpu/Makefile > > create mode 100644 drivers/media/platform/mtk-vpu/mtk_vpu.c > > create mode 100644 drivers/media/platform/mtk-vpu/mtk_vpu.h > > > > diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig > > index ccbc974..ba812d6 100644 > > --- a/drivers/media/platform/Kconfig > > +++ b/drivers/media/platform/Kconfig > > @@ -148,6 +148,15 @@ config VIDEO_CODA > > Coda is a range of video codec IPs that supports > > H.264, MPEG-4, and other video formats. > > > > +config VIDEO_MEDIATEK_VPU > > + tristate "Mediatek Video Processor Unit" > > + depends on VIDEO_DEV && VIDEO_V4L2 && ARCH_MEDIATEK > > + ---help--- > > + This driver provides downloading VPU firmware and > > + communicating with VPU. This driver for hw video > > + codec embedded in new Mediatek's SOCs. It is able > > + to handle video decoding/encoding in a range of formats. > > Can you be more specific in this text and mention for which Mediatek SoCs > this driver is for? Just like you did in the commit log. > Got it. We will add more specific description in Kconfig in next version. > Also add something like this: > > To compile this driver as a module, choose M here: the module > will be called mtk-vpu. > > I always find it useful if the Kconfig text mentions the module name. > Got it. We will fix this. Thanks for sharing experience. best regards, Tiffany > Regards, > > Hans > > > + > > config VIDEO_MEM2MEM_DEINTERLACE > > tristate "Deinterlace support" > > depends on VIDEO_DEV && VIDEO_V4L2 && DMA_ENGINE > From mboxrd@z Thu Jan 1 00:00:00 1970 From: tiffany lin Subject: Re: [PATCH v4 2/8] [media] VPU: mediatek: support Mediatek VPU Date: Mon, 15 Feb 2016 19:27:36 +0800 Message-ID: <1455535656.27088.6.camel@mtksdaap41> References: <1454585703-42428-1-git-send-email-tiffany.lin@mediatek.com> <1454585703-42428-2-git-send-email-tiffany.lin@mediatek.com> <1454585703-42428-3-git-send-email-tiffany.lin@mediatek.com> <56C1A4C6.7040601@xs4all.nl> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <56C1A4C6.7040601@xs4all.nl> Sender: linux-media-owner@vger.kernel.org To: Hans Verkuil Cc: Hans Verkuil , daniel.thompson@linaro.org, Rob Herring , Mauro Carvalho Chehab , Matthias Brugger , Daniel Kurtz , Pawel Osciak , Eddie Huang , Yingjoe Chen , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linux-mediatek@lists.infradead.org, PoChun.Lin@mediatek.com, Andrew-CT Chen List-Id: devicetree@vger.kernel.org On Mon, 2016-02-15 at 11:13 +0100, Hans Verkuil wrote: > On 02/04/2016 12:34 PM, Tiffany Lin wrote: > > The VPU driver for hw video codec embedded in Mediatek's MT8173 SOCs. > > It is able to handle video decoding/encoding of in a range of formats. > > The driver provides with VPU firmware download, memory management and > > the communication interface between CPU and VPU. > > For VPU initialization, it will create virtual memory for CPU access and > > IOMMU address for vcodec hw device access. When a decode/encode instance > > opens a device node, vpu driver will download vpu firmware to the device. > > A decode/encode instant will decode/encode a frame using VPU > > interface to interrupt vpu to handle decoding/encoding jobs. > > > > Signed-off-by: Andrew-CT Chen > > Signed-off-by: Tiffany Lin > > --- > > drivers/media/platform/Kconfig | 9 + > > drivers/media/platform/Makefile | 2 + > > drivers/media/platform/mtk-vpu/Makefile | 1 + > > drivers/media/platform/mtk-vpu/mtk_vpu.c | 994 ++++++++++++++++++++++++++++++ > > drivers/media/platform/mtk-vpu/mtk_vpu.h | 167 +++++ > > 5 files changed, 1173 insertions(+) > > create mode 100644 drivers/media/platform/mtk-vpu/Makefile > > create mode 100644 drivers/media/platform/mtk-vpu/mtk_vpu.c > > create mode 100644 drivers/media/platform/mtk-vpu/mtk_vpu.h > > > > diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig > > index ccbc974..ba812d6 100644 > > --- a/drivers/media/platform/Kconfig > > +++ b/drivers/media/platform/Kconfig > > @@ -148,6 +148,15 @@ config VIDEO_CODA > > Coda is a range of video codec IPs that supports > > H.264, MPEG-4, and other video formats. > > > > +config VIDEO_MEDIATEK_VPU > > + tristate "Mediatek Video Processor Unit" > > + depends on VIDEO_DEV && VIDEO_V4L2 && ARCH_MEDIATEK > > + ---help--- > > + This driver provides downloading VPU firmware and > > + communicating with VPU. This driver for hw video > > + codec embedded in new Mediatek's SOCs. It is able > > + to handle video decoding/encoding in a range of formats. > > Can you be more specific in this text and mention for which Mediatek SoCs > this driver is for? Just like you did in the commit log. > Got it. We will add more specific description in Kconfig in next version. > Also add something like this: > > To compile this driver as a module, choose M here: the module > will be called mtk-vpu. > > I always find it useful if the Kconfig text mentions the module name. > Got it. We will fix this. Thanks for sharing experience. best regards, Tiffany > Regards, > > Hans > > > + > > config VIDEO_MEM2MEM_DEINTERLACE > > tristate "Deinterlace support" > > depends on VIDEO_DEV && VIDEO_V4L2 && DMA_ENGINE > From mboxrd@z Thu Jan 1 00:00:00 1970 From: tiffany.lin@mediatek.com (tiffany lin) Date: Mon, 15 Feb 2016 19:27:36 +0800 Subject: [PATCH v4 2/8] [media] VPU: mediatek: support Mediatek VPU In-Reply-To: <56C1A4C6.7040601@xs4all.nl> References: <1454585703-42428-1-git-send-email-tiffany.lin@mediatek.com> <1454585703-42428-2-git-send-email-tiffany.lin@mediatek.com> <1454585703-42428-3-git-send-email-tiffany.lin@mediatek.com> <56C1A4C6.7040601@xs4all.nl> Message-ID: <1455535656.27088.6.camel@mtksdaap41> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, 2016-02-15 at 11:13 +0100, Hans Verkuil wrote: > On 02/04/2016 12:34 PM, Tiffany Lin wrote: > > The VPU driver for hw video codec embedded in Mediatek's MT8173 SOCs. > > It is able to handle video decoding/encoding of in a range of formats. > > The driver provides with VPU firmware download, memory management and > > the communication interface between CPU and VPU. > > For VPU initialization, it will create virtual memory for CPU access and > > IOMMU address for vcodec hw device access. When a decode/encode instance > > opens a device node, vpu driver will download vpu firmware to the device. > > A decode/encode instant will decode/encode a frame using VPU > > interface to interrupt vpu to handle decoding/encoding jobs. > > > > Signed-off-by: Andrew-CT Chen > > Signed-off-by: Tiffany Lin > > --- > > drivers/media/platform/Kconfig | 9 + > > drivers/media/platform/Makefile | 2 + > > drivers/media/platform/mtk-vpu/Makefile | 1 + > > drivers/media/platform/mtk-vpu/mtk_vpu.c | 994 ++++++++++++++++++++++++++++++ > > drivers/media/platform/mtk-vpu/mtk_vpu.h | 167 +++++ > > 5 files changed, 1173 insertions(+) > > create mode 100644 drivers/media/platform/mtk-vpu/Makefile > > create mode 100644 drivers/media/platform/mtk-vpu/mtk_vpu.c > > create mode 100644 drivers/media/platform/mtk-vpu/mtk_vpu.h > > > > diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig > > index ccbc974..ba812d6 100644 > > --- a/drivers/media/platform/Kconfig > > +++ b/drivers/media/platform/Kconfig > > @@ -148,6 +148,15 @@ config VIDEO_CODA > > Coda is a range of video codec IPs that supports > > H.264, MPEG-4, and other video formats. > > > > +config VIDEO_MEDIATEK_VPU > > + tristate "Mediatek Video Processor Unit" > > + depends on VIDEO_DEV && VIDEO_V4L2 && ARCH_MEDIATEK > > + ---help--- > > + This driver provides downloading VPU firmware and > > + communicating with VPU. This driver for hw video > > + codec embedded in new Mediatek's SOCs. It is able > > + to handle video decoding/encoding in a range of formats. > > Can you be more specific in this text and mention for which Mediatek SoCs > this driver is for? Just like you did in the commit log. > Got it. We will add more specific description in Kconfig in next version. > Also add something like this: > > To compile this driver as a module, choose M here: the module > will be called mtk-vpu. > > I always find it useful if the Kconfig text mentions the module name. > Got it. We will fix this. Thanks for sharing experience. best regards, Tiffany > Regards, > > Hans > > > + > > config VIDEO_MEM2MEM_DEINTERLACE > > tristate "Deinterlace support" > > depends on VIDEO_DEV && VIDEO_V4L2 && DMA_ENGINE >