From: Sourav Poddar <sourav.poddar@ti.com>
To: Mark Brown <broonie@kernel.org>
Cc: devicetree@vger.kernel.org, computersforpeace@gmail.com,
balbi@ti.com, linux-spi@vger.kernel.org,
linux-mtd@lists.infradead.org, bcousson@baylibre.com,
linux-omap@vger.kernel.org
Subject: Re: [PATCH 12/17] spi/qspi: convert driver to enable/disable memory mapped.
Date: Thu, 28 Nov 2013 17:32:58 +0530 [thread overview]
Message-ID: <529730F2.5070807@ti.com> (raw)
In-Reply-To: <20131128115934.GE27568@sirena.org.uk>
On Thursday 28 November 2013 05:29 PM, Mark Brown wrote:
> On Thu, Nov 28, 2013 at 04:38:27PM +0530, Sourav Poddar wrote:
>> On Thursday 28 November 2013 04:19 PM, Mark Brown wrote:
>>> Removing the mapping isn't going to stop another context which has
>>> obtained a handle on the map trying to look at the mapping.
>> hmm..so the 'memcpy' part should be made atomic.(if possible?).
> Or holding the memory region should prevent normal SPI use (so any users
> ought to drop the memory region when they don't need it).
hmm.ok i will unmap the memory region when not in use.
> I'm still a bit surprised there's no DMA controllers for this...
Yes, but thats the truth :(
next prev parent reply other threads:[~2013-11-28 12:03 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-26 7:34 [PATCH 00/17] Add memory mapped support for ti qspi, m25p80 serial flash Sourav Poddar
2013-11-26 7:34 ` [PATCH 01/17] spi/spi.h: Add get_buf/put_buf support in spi master Sourav Poddar
2013-11-26 12:38 ` Mark Brown
2013-11-26 7:34 ` [PATCH 02/17] spi/spi.h: Add configure from slave support Sourav Poddar
2013-11-26 10:29 ` Mark Brown
2013-11-26 11:21 ` Sourav Poddar
2013-11-26 12:21 ` Mark Brown
2013-11-28 4:47 ` Sourav Poddar
2013-11-28 10:55 ` Mark Brown
2013-11-26 7:34 ` [PATCH 03/17] spi/qspi: parse register by name Sourav Poddar
2013-11-26 10:30 ` Mark Brown
2013-11-26 11:17 ` Sourav Poddar
2013-11-26 12:24 ` Mark Brown
2013-11-28 4:45 ` Sourav Poddar
2013-11-28 10:54 ` Mark Brown
2013-11-28 10:58 ` Sourav Poddar
2013-11-28 11:11 ` Mark Brown
2013-11-28 11:19 ` Sourav Poddar
2013-11-26 7:35 ` [PATCH 04/17] spi/qspi: parse control module register Sourav Poddar
2013-11-26 10:31 ` Mark Brown
2013-11-26 11:18 ` Sourav Poddar
2013-11-26 12:25 ` Mark Brown
2013-11-26 12:38 ` Sourav Poddar
2013-11-26 12:55 ` Mark Brown
2013-11-26 13:00 ` Sourav Poddar
2013-11-26 13:19 ` Mark Brown
2013-11-26 13:20 ` Sourav Poddar
2013-11-26 7:35 ` [PATCH 05/17] spi/qspi: parse memory map register Sourav Poddar
2013-11-26 7:35 ` [PATCH 06/17] spi/qspi: Add support to switc to memory mapped operation Sourav Poddar
2013-11-26 12:57 ` Mark Brown
2013-11-28 4:39 ` Sourav Poddar
2013-11-26 7:35 ` [PATCH 07/17] spi/qspi: configure set up register for memory map Sourav Poddar
2013-11-26 7:35 ` [PATCH 08/17] spi/qspi: Add api for get_buf/put_buf Sourav Poddar
2013-11-26 7:35 ` [PATCH 09/17] spi/spi.h: Add "mem" variable in spi master Sourav Poddar
2013-11-26 13:01 ` Mark Brown
2013-11-26 13:05 ` Sourav Poddar
2013-11-26 13:20 ` Mark Brown
2013-11-28 4:38 ` Sourav Poddar
2013-11-26 7:35 ` [PATCH 10/17] spi/spi.h: Add mmap flag " Sourav Poddar
2013-11-26 7:35 ` [PATCH 11/17] spi/qspi: set "mmap" flag to true Sourav Poddar
2013-11-26 13:10 ` Mark Brown
2013-11-26 13:11 ` Sourav Poddar
2013-11-26 7:35 ` [PATCH 12/17] spi/qspi: convert driver to enable/disable memory mapped Sourav Poddar
2013-11-26 13:11 ` Mark Brown
2013-11-28 5:24 ` Sourav Poddar
2013-11-28 10:49 ` Mark Brown
2013-11-28 11:08 ` Sourav Poddar
2013-11-28 11:59 ` Mark Brown
2013-11-28 12:02 ` Sourav Poddar [this message]
2013-11-26 7:35 ` [PATCH 13/17] drivers: mtd: m25p80: Add api to configure master register Sourav Poddar
2013-11-26 7:35 ` [PATCH 14/17] drivers: mtd: m25p80: Adapt driver to support memory mapped read Sourav Poddar
2013-11-26 7:35 ` [PATCH 15/17] arm: dts: dra7: Add qspi device Sourav Poddar
2013-11-26 7:35 ` [PATCH 16/17] arm: dts: am43x-epos: " Sourav Poddar
2013-11-26 7:35 ` [PATCH 17/17] Documentation: bindings: ti-qspi: update binding information Sourav Poddar
2013-12-05 9:09 ` [PATCH 00/17] Add memory mapped support for ti qspi, m25p80 serial flash Sourav Poddar
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