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From: Vinod Koul <vkoul@kernel.org>
To: Sameer Pujar <spujar@nvidia.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>,
	dan.j.williams@intel.com, tiwai@suse.com, jonathanh@nvidia.com,
	dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
	sharadg@nvidia.com, rlokhande@nvidia.com, dramesh@nvidia.com,
	mkumard@nvidia.com
Subject: Re: [PATCH] [RFC] dmaengine: add fifo_size member
Date: Mon, 29 Jul 2019 11:40:10 +0530
Message-ID: <20190729061010.GC12733@vkoul-mobl.Dlink> (raw)
In-Reply-To: <3e7f795d-56fb-6a71-b844-2fc2b85e099e@nvidia.com>

On 23-07-19, 11:24, Sameer Pujar wrote:
> 
> On 7/19/2019 10:34 AM, Vinod Koul wrote:
> > On 05-07-19, 11:45, Sameer Pujar wrote:
> > > Hi Vinod,
> > > 
> > > What are your final thoughts regarding this?
> > Hi sameer,
> > 
> > Sorry for the delay in replying
> > 
> > On this, I am inclined to think that dma driver should not be involved.
> > The ADMAIF needs this configuration and we should take the path of
> > dma_router for this piece and add features like this to it
> 
> Hi Vinod,
> 
> The configuration is needed by both ADMA and ADMAIF. The size is
> configurable
> on ADMAIF side. ADMA needs to know this info and program accordingly.

Well I would say client decides the settings for both DMA, DMAIF and
sets the peripheral accordingly as well, so client communicates the two
sets of info to two set of drivers

> Not sure if dma_router can help to achieve this.
> 
> I checked on dma_router. It would have been useful when a configuration
> exported
> via ADMA, had to be applied to ADMAIF. Please correct me if I am wrong here.

router was added for such a senario, if you feel that it doesn't serve
your purpose, feel free to send up update for it, if that is the case.

Thanks

-- 
~Vinod

  reply index

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-30 11:30 Sameer Pujar
2019-04-30 11:30 ` [PATCH] " Sameer Pujar
2019-05-02  6:04 ` Vinod Koul
2019-05-02  6:04   ` [PATCH] " Vinod Koul
2019-05-02 10:53   ` Sameer Pujar
2019-05-02 12:25     ` Vinod Koul
2019-05-02 13:29       ` Sameer Pujar
2019-05-03 19:10         ` Peter Ujfalusi
2019-05-04 10:23         ` Vinod Koul
2019-05-06 13:04           ` Sameer Pujar
2019-05-06 15:50             ` Vinod Koul
2019-06-06  3:49               ` Sameer Pujar
2019-06-06  6:00                 ` Peter Ujfalusi
2019-06-06  6:41                   ` Sameer Pujar
2019-06-06  7:14                     ` Jon Hunter
2019-06-06 10:22                       ` Peter Ujfalusi
2019-06-06 10:49                         ` Jon Hunter
2019-06-06 11:54                           ` Peter Ujfalusi
2019-06-06 12:37                             ` Jon Hunter
2019-06-06 13:45                               ` Dmitry Osipenko
2019-06-06 13:55                                 ` Dmitry Osipenko
2019-06-06 14:26                                   ` Jon Hunter
2019-06-06 14:36                                     ` Jon Hunter
2019-06-06 14:36                                     ` Dmitry Osipenko
2019-06-06 14:47                                       ` Jon Hunter
2019-06-06 14:25                                 ` Jon Hunter
2019-06-06 15:18                                   ` Dmitry Osipenko
2019-06-06 16:32                                     ` Jon Hunter
2019-06-06 16:44                                       ` Dmitry Osipenko
2019-06-06 16:53                                         ` Jon Hunter
2019-06-06 17:25                                           ` Dmitry Osipenko
2019-06-06 17:56                                             ` Dmitry Osipenko
2019-06-07  9:24                                             ` Jon Hunter
2019-06-07  5:50                               ` Peter Ujfalusi
2019-06-07  9:18                                 ` Jon Hunter
2019-06-07 10:27                                   ` Jon Hunter
2019-06-07 12:17                                     ` Peter Ujfalusi
2019-06-07 12:58                                       ` Jon Hunter
2019-06-07 13:35                                         ` Peter Ujfalusi
2019-06-07 20:53                                           ` Dmitry Osipenko
2019-06-10  8:01                                             ` Jon Hunter
2019-06-10  7:59                                           ` Jon Hunter
2019-06-13  4:43                 ` Vinod Koul
2019-06-17  7:07                   ` Sameer Pujar
2019-06-18  4:33                     ` Vinod Koul
2019-06-20 10:29                       ` Sameer Pujar
2019-06-24  6:26                         ` Vinod Koul
2019-06-25  2:57                           ` Sameer Pujar
2019-07-05  6:15                             ` Sameer Pujar
2019-07-15 15:42                               ` Sameer Pujar
2019-07-19  5:04                               ` Vinod Koul
2019-07-23  5:54                                 ` Sameer Pujar
2019-07-29  6:10                                   ` Vinod Koul [this message]
2019-07-31  9:48                                     ` Jon Hunter
2019-07-31 15:16                                       ` Vinod Koul
2019-08-02  8:51                                         ` Jon Hunter
2019-08-08 12:38                                           ` Vinod Koul
2019-08-19 15:56                                             ` Jon Hunter
2019-08-20 11:05                                               ` Vinod Koul
2019-09-16  9:02                                                 ` Sameer Pujar

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