From: Mark Brown <broonie@kernel.org>
To: Vignesh R <vigneshr@ti.com>
Cc: David Woodhouse <dwmw2@infradead.org>,
Brian Norris <computersforpeace@gmail.com>,
Tony Lindgren <tony@atomide.com>,
Russell King <linux@arm.linux.org.uk>,
Huang Shijie <b32955@freescale.com>,
linux-omap@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
linux-spi@vger.kernel.org
Subject: Re: [RFC PATCH 1/5] spi: introduce flag for memory mapped read
Date: Fri, 31 Jul 2015 19:17:45 +0100 [thread overview]
Message-ID: <20150731181745.GM20873@sirena.org.uk> (raw)
In-Reply-To: <1438072876-16338-2-git-send-email-vigneshr@ti.com>
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On Tue, Jul 28, 2015 at 02:11:12PM +0530, Vignesh R wrote:
> Introduce use_mmap_read field in spi_message struct. This can be set by
> mtd devices (m25p80) to indicate to spi-master (ti-qspi) to perform
> memory mapped read. This helps to distinguish whether the spi-message is
> from mtd layer(hence mmap read is possible) or by other spi devices.
Based on this description and...
> + * @use_mmap_mode: Indicate to spi master to perform memory mapped
> + * read if possible.
...the internal documentation I unable to tell what is meant by "perform
a memory mapped read", at least to the extent where it is visible
outside of the driver. This means we can't really use this as a generic
API since other people won't be able to tell what it does.
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next prev parent reply other threads:[~2015-07-31 21:21 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-28 8:41 [RFC PATCH 0/5] Add memory mapped read support for TI QSPI Vignesh R
2015-07-28 8:41 ` [RFC PATCH 1/5] spi: introduce flag for memory mapped read Vignesh R
2015-07-31 18:17 ` Mark Brown [this message]
2015-08-03 4:57 ` Vignesh R
2015-08-04 15:51 ` Mark Brown
2015-08-04 17:59 ` R, Vignesh
2015-08-05 5:21 ` Michal Suchanek
2015-08-05 5:35 ` Vignesh R
2015-08-05 5:57 ` Michal Suchanek
2015-08-05 11:50 ` Mark Brown
2015-08-05 12:40 ` Michal Suchanek
2015-08-05 12:44 ` Mark Brown
2015-08-05 12:56 ` Michal Suchanek
2015-08-06 9:02 ` Mark Brown
2015-08-06 10:01 ` Michal Suchanek
2015-08-06 10:22 ` Russell King - ARM Linux
2015-08-06 11:00 ` Mark Brown
2015-08-06 11:02 ` Michal Suchanek
2015-08-06 12:25 ` Vignesh R
2015-08-06 13:51 ` Russell King - ARM Linux
2015-08-06 16:14 ` Geert Uytterhoeven
2015-08-06 18:20 ` Michal Suchanek
2015-08-06 21:33 ` Russell King - ARM Linux
2015-08-07 7:38 ` Michal Suchanek
2015-08-07 8:35 ` Vignesh R
2015-08-07 8:25 ` Martin Sperl
2015-08-07 10:16 ` Michal Suchanek
2015-08-12 9:27 ` Vignesh R
2015-08-06 16:46 ` Mark Brown
2015-08-06 18:20 ` Mark Brown
2015-08-06 11:23 ` Mark Brown
2015-08-06 11:42 ` Michal Suchanek
2015-08-06 16:03 ` Mark Brown
2015-07-28 8:41 ` [RFC PATCH 2/5] spi: spi-ti-qspi: Add memory mapped read support Vignesh R
2015-07-28 8:41 ` [RFC PATCH 3/5] mtd: devices: m25p80: set flag to request memory mapped read Vignesh R
2015-07-28 8:41 ` [RFC PATCH 4/5] ARM: dts: DRA7: Add memory map region entries for qspi Vignesh R
2015-07-31 13:48 ` Sekhar Nori
2015-08-03 5:09 ` Vignesh R
2015-07-31 18:19 ` Mark Brown
2015-08-03 5:02 ` Vignesh R
2015-08-04 15:52 ` Mark Brown
2015-07-31 21:28 ` Brian Norris
2015-08-03 5:06 ` Vignesh R
2015-07-28 8:41 ` [RFC PATCH 5/5] ARM: dts: AM4372: " Vignesh R
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