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This change modifies the spi_xfer function to take read and write buffers and
read and write bit counts which is similar to what flashrom does. This has the
nice effect of simiplifying many call sights, and will allow integrating SPI
controllers which don't allow arbitrary control of the chip select lines.
Only boards which are being used with ChromeOS and the functionality they use
will be updated immediately. That's because those are the cases which can
actually be tested effectively, and fixing up the other locations can be put
off until later. These change and the eventual change that updates all the
other call sights/drivers can also be reviewed and tested independently. It
will also make rebasing easier.
To try to make the transition less painful, the new interface is selectable
using the CONFIG_NEW_SPI_XFER option. This selects whether the new or old
interface is used.
BUG=chrome-os-partner:4722
TEST=With this and related changes, built for x86-alex, tegra2_kaen,
tegra2_aebl, tegra2_seaboard, and tegra2_asymptote. Flashed the firmware on a
Kaen, verified the checksums matched, and booted to ChromeOS login. Built with
the option turned off on x86-alex and tegra2_kaen.
Change-Id: If32843255584544b08b9c8e18bbd9f36273fb71b
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://gerrit.chromium.org/gerrit/5374
Reviewed-by: Stefan Reinauer <reinauer@google.com>
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This patch adds a new member to struct spi_flash (u16 sector_size)
and updates the spi flash drivers to start populating it.
This parameter can be used by spi flash commands that need to round
up units of operation to the flash's sector_size.
Having this number in one place also allows duplicated code to be
further collapsed into one common location (such as erase parameter
and the detected message).
Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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All of the spi flash drivers implement the status register polling for
detecting the device ready state, so unify them all in a new helper
function -- spi_flash_wait_ready.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Signed-off-by: Chong Huang <chuang@ucrobotics.com>
Signed-off-by: Haitao Zhang <minipanda@linuxrobot.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Supports most types that support Read-Id and the FM25H20.
Signed-off-by: Reinhard Meyer <u-boot@emk-elektronik.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Signed-off-by: Jason McMullan <jason.mcmullan@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Added macronix SF driver for MTD framework
MX25L12805D is supported and tested
TBD: sector erase implementation, other deivces support
Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Since timeouts are only hit when there is a problem in the system, we
don't want to prematurely timeout on a functioning setup. Thus having
low timeouts (in milliseconds) doesn't gain us anything in the production
case, but rather increases likely hood of causing problems where none
otherwise exist.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
CC: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
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Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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Add MTD SPI Flash support for M25P16, M25P20, M25P32,
M25P40, M25P64, M25P80, M25P128.
Signed-off-by: Jason McMullan <mcmullan@netapp.com>
Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
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This adds a new SPI flash subsystem.
Currently, only AT45 DataFlash in non-power-of-two mode is supported,
but some preliminary support for other flash types is in place as
well.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
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