From: Arnd Bergmann <arnd@arndb.de>
To: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Vinod Koul <vinod.koul@intel.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Tony Lindgren <tony@atomide.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
dmaengine@vger.kernel.org,
"linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
Linux MMC List <linux-mmc@vger.kernel.org>,
linux-crypto@vger.kernel.org,
linux-spi <linux-spi@vger.kernel.org>,
Linux Media Mailing List <linux-media@vger.kernel.org>,
ALSA Development Mailing List <alsa-devel@alsa-project.org>
Subject: Re: [PATCH 02/13] dmaengine: Introduce dma_request_slave_channel_compat_reason()
Date: Wed, 18 Nov 2015 15:29:15 +0100 [thread overview]
Message-ID: <6347063.Gd6coh6hX8@wuerfel> (raw)
In-Reply-To: <564C8966.9080406@ti.com>
On Wednesday 18 November 2015 16:21:26 Peter Ujfalusi wrote:
> 2. non slave channel requests, where only the functionality matters, like
> memcpy, interleaved, memset, etc.
> We could have a simple:
> dma_request_channel(mask);
>
> But looking at the drivers using dmaengine legacy dma_request_channel() API:
> Some sets DMA_INTERRUPT or DMA_PRIVATE or DMA_SG along with DMA_SLAVE:
> drivers/misc/carma/carma-fpga.c DMA_INTERRUPT|DMA_SLAVE|DMA_SG
> drivers/misc/carma/carma-fpga-program.c DMA_MEMCPY|DMA_SLAVE|DMA_SG
> drivers/media/platform/soc_camera/mx3_camera.c DMA_SLAVE|DMA_PRIVATE
> sound/soc/intel/common/sst-firmware.c DMA_SLAVE|DMA_MEMCPY
>
> as examples.
> Not sure how valid are these...
It's usually not much harder to separate out the legacy case from
the normal dma_request_slave_channel_reason(), so those drivers don't
really need to use the unified compat API.
Arnd
next prev parent reply other threads:[~2015-11-18 14:29 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-26 13:25 [PATCH 00/13] dmaengine + omap drivers: support fro deferred probing Peter Ujfalusi
2015-05-26 13:25 ` [PATCH 01/13] dmaengine: of_dma: Correct return code for of_dma_request_slave_channel in case !CONFIG_OF Peter Ujfalusi
2015-05-26 13:25 ` [PATCH 02/13] dmaengine: Introduce dma_request_slave_channel_compat_reason() Peter Ujfalusi
2015-05-29 9:33 ` Vinod Koul
2015-05-29 9:42 ` Geert Uytterhoeven
2015-05-29 10:18 ` Vinod Koul
2015-05-29 14:32 ` Peter Ujfalusi
2015-06-02 12:55 ` Vinod Koul
2015-06-04 15:58 ` Peter Ujfalusi
2015-06-12 12:58 ` Vinod Koul
2015-06-22 11:31 ` Peter Ujfalusi
2015-06-24 16:24 ` Vinod Koul
2015-06-25 11:15 ` Arnd Bergmann
2015-11-18 14:21 ` Peter Ujfalusi
2015-11-18 14:29 ` Arnd Bergmann [this message]
2015-11-18 14:41 ` Peter Ujfalusi
2015-11-18 15:07 ` Arnd Bergmann
2015-11-18 15:43 ` Andy Shevchenko
[not found] ` <CAHp75VeZFXp9i_zz7CBkVQVPGQxuzYk9AbWbbbn33r8YX3LCdw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-11-18 15:51 ` Arnd Bergmann
2015-11-18 16:00 ` Andy Shevchenko
2015-11-18 16:06 ` Vinod Koul
2015-11-19 10:34 ` Peter Ujfalusi
2015-11-19 11:25 ` Arnd Bergmann
2015-11-20 10:25 ` Peter Ujfalusi
2015-11-20 10:58 ` Arnd Bergmann
2015-11-20 12:24 ` Andy Shevchenko
[not found] ` <CAHp75VdoHqPMNGFfz4mPhX+Lw+vxgiyqFS8j5+kQ9Z9CHt=OTA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-11-20 12:30 ` Peter Ujfalusi
[not found] ` <564F1253.4000800-l0cyMroinI0@public.gmane.org>
2015-11-20 14:08 ` Andy Shevchenko
2015-11-20 12:52 ` Peter Ujfalusi
[not found] ` <564F1773.9030006-l0cyMroinI0@public.gmane.org>
2015-11-20 13:48 ` Arnd Bergmann
2015-11-18 15:46 ` Andy Shevchenko
2015-11-19 10:36 ` Peter Ujfalusi
2015-05-26 13:25 ` [PATCH 04/13] mmc: omap_hsmmc: No need to check DMA channel validity at module remove Peter Ujfalusi
2015-05-28 7:20 ` Ulf Hansson
2015-05-26 13:26 ` [PATCH 05/13] mmc: omap_hsmmc: Support for deferred probing when requesting DMA channels Peter Ujfalusi
[not found] ` <1432646768-12532-6-git-send-email-peter.ujfalusi-l0cyMroinI0@public.gmane.org>
2015-05-28 7:23 ` Ulf Hansson
2015-05-26 13:26 ` [PATCH 06/13] mmc: omap: " Peter Ujfalusi
2015-05-26 13:26 ` [PATCH 07/13] mmc: davinci_mmc: " Peter Ujfalusi
2015-05-28 7:31 ` Ulf Hansson
2015-05-26 13:26 ` [PATCH 08/13] crypto: omap-aes - " Peter Ujfalusi
[not found] ` <1432646768-12532-1-git-send-email-peter.ujfalusi-l0cyMroinI0@public.gmane.org>
2015-05-26 13:25 ` [PATCH 03/13] serial: 8250_dma: " Peter Ujfalusi
[not found] ` <1432646768-12532-4-git-send-email-peter.ujfalusi-l0cyMroinI0@public.gmane.org>
2015-05-26 14:44 ` Greg Kroah-Hartman
2015-05-27 10:41 ` Peter Ujfalusi
2015-05-27 10:41 ` Peter Ujfalusi
2015-05-26 15:08 ` Tony Lindgren
2015-05-27 10:58 ` Peter Ujfalusi
2015-05-26 13:26 ` [PATCH 09/13] crypto: omap-des - " Peter Ujfalusi
2015-05-26 13:26 ` [PATCH 13/13] ASoC: omap-pcm: Switch to use dma_request_slave_channel_compat_reason() Peter Ujfalusi
2015-05-27 17:48 ` Mark Brown
2015-05-26 13:26 ` [PATCH 10/13] crypto: omap-sham - Support for deferred probing when requesting DMA channel Peter Ujfalusi
2015-05-26 13:26 ` [PATCH 11/13] spi: omap2-mcspi: Support for deferred probing when requesting DMA channels Peter Ujfalusi
2015-05-26 15:27 ` Mark Brown
2015-05-27 11:15 ` Peter Ujfalusi
[not found] ` <5565A740.2020707-l0cyMroinI0@public.gmane.org>
2015-05-27 17:48 ` Mark Brown
2015-05-27 17:48 ` Mark Brown
2015-05-26 13:26 ` [PATCH 12/13] [media] omap3isp: Support for deferred probing when requesting DMA channel Peter Ujfalusi
2015-11-09 19:50 ` Laurent Pinchart
2015-11-10 7:56 ` Peter Ujfalusi
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