| Commit message (Collapse) | Author | Age | Files | Lines |
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'for-32/i2c/eg20t-v4', 'for-32/i2c/designware-v5' and 'for-32/i2c/au1550' into for-linus/i2c-3.2
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use newer dev_pm_ops for PM
Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Double the timeout in the loop which busy-waits for the "master-done"
bit to be set. This bit indicates whether an i2c transaction has
completed; on the DB1300 and DB1550 boards this timeout is slightly
too short and causes transactions to the WM8731 codec to be falsely flagged
as failed. The timeout itself is necessary since transactions to
non-existant slaves never set this bit in the first place (and cause
i2cdetect to hang).
With this change the WM8731 codec on the DB1300/DB1550 boards is correctly
detected and initialized.
Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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The ack_timeout context member is unused, get rid of it.
Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Replace the usage of "volatile"s with register accessor functions.
Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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PCI core warns if the legacy PM and new PM functions are
present. Update the driver to only use the new power management
framework.
This patch fixes the following warning seen during suspend/resume:
<7>[ 24.193850] i2c-designware-pci 0000:08:13.0: suspend
<4>[ 24.193866] ------------[ cut here ]------------
<4>[ 24.193892] WARNING: at drivers/pci/pci-driver.c:605 pci_has_legacy_pm_support+0x48/0x4d()
<4>[ 24.193925] Hardware name: OakTrail
<4>[ 24.193936] Modules linked in:
<4>[ 24.193958] Pid: 2834, comm: kworker/u:22 Tainted: G W 2.6.36greenridge-01402-gc8047e6 #171
<4>[ 24.193974] Call Trace:
<4>[ 24.193999] [<c1033a93>] warn_slowpath_common+0x66/0xc2
<4>[ 24.194025] [<c1164143>] ? pci_has_legacy_pm_support+0x48/0x4d
<4>[ 24.194052] [<c1033afe>] warn_slowpath_null+0xf/0x13
<4>[ 24.194079] [<c1164143>] pci_has_legacy_pm_support+0x48/0x4d
<4>[ 24.194106] [<c11643ff>] pci_pm_suspend+0x22/0x154
<4>[ 24.194131] [<c11643dd>] ? pci_pm_suspend+0x0/0x154
<4>[ 24.194156] [<c11e8a7a>] pm_op+0x3e/0x95
<4>[ 24.194182] [<c11e931d>] __device_suspend+0x12e/0x194
<4>[ 24.194208] [<c11e974d>] ? dpm_drv_timeout+0x0/0x47
<4>[ 24.194237] [<c11e9729>] async_suspend+0x16/0x3a
<4>[ 24.194265] [<c104de8e>] async_run_entry_fn+0x97/0x135
<4>[ 24.194291] [<c1043c34>] process_one_work+0x1c9/0x2db
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Add runtime power management to the PCI driver.
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Move all register manipulation code into the core, also move register
offset definitions to i2c-designware-core.c since the bus specific
portions of the driver no longer need/use them.
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Add check to make sure that the core is enabled and has outstanding
interrupts. The activity bit is masked due to the fact that it will
stay active even after the controller has been disabled until the
contoller internal state machines have settled.
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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With multiple I2C adapters possible in the system each running at
(possibly) different speeds we need to move the controller
configuration bit field to the adapter.
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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The functionality of the adapter depends on the configuration of the
IP block at silicon compile time and is adapter specific.
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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The clock frequecy supplied to the IP core is specific to a single
instance of the driver. This patch makes it possible to have multiple
Designware I2C cores in the system possibly running at different core
frequencies.
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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This patch splits i2c-designware.c into three pieces:
i2c-designware-core.c, contains the code that interacts directly
with the core.
i2c-designware-platdrv.c, contains the code specific to the
platform driver using the core.
i2c-designware-core.h contains the definitions and declareations
shared by i2c-designware-core.c and i2c-designware-platdrv.c.
This patch is the first in a set to allow multiple instances of the
designware I2C core in the system.
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Move checking IP core version to i2c_dw_init() in preparation for
splitting i2c-designware.c into core and bus specific portions.
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Allows CPUs of a given endianness to access a dw controller of a different
endianness. Endianncess difference is detected at run time through the dw
component type register.
Signed-off-by: Jean-Hugues Deschenes <jean-hugues.deschenes@octasic.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Designware component type register is checked before attaching to the device.
Signed-off-by: Jean-Hugues Deschenes <jean-hugues.deschenes@octasic.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Use local versions of readl & writel, so per-access manipulations may be performed
Signed-off-by: Jean-Hugues Deschenes <jean-hugues.deschenes@octasic.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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In case disconnecting physical connection,
need to initialize i2c device for retry access.
This patch adds initialize process in case bus-idle fails and Lost arbitration.
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Currently, in case occurring abnormal event,
internal flag variable(=pch_event_flag) is not reset.
This patch fixes the issue.
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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add stop sequence in case wait-event timeout in write processing.
(read processing already had it)
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Error processing for NACK or wait-event must be precessed separately.
So divide wait-event error processing into NACK-receiving and timeout.
Add arbitration lost processing.
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Reported-by: Jeffrey (Sheng-Hui) Chu <jeffchu@broadcom.com>
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Type of wait_event_timeout is long not s32.
This patch replaces s32 with long.
Additionally, delete negative processing(ret < 0).
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Currently, when checking whether bus is idle or not,
if timeout occurs,
this function always returns success(zero).
This patch fixes the issue.
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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It adds device tree probe support for i2c-imx driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Darius Augulis <augulis.darius@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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The init/exit hooks in platform data are being used nowhere, so can
be removed.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Darius Augulis <augulis.darius@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Now that this driver is using runtime PM, there is no longer a need
for the idle/enable/shutdown function pointers in pdata.
Signed-off-by: Kevin Hilman <khilman@ti.com>
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Current usage of runtime PM is not quite correct. The actual
idle/unidle of the I2C hardware should not happen until the runtime PM
callbacks are called. Therefore, change omap_i2c_[un]idle() functions
to only be called from the runtime PM callbacks (when usage count
transitions to/from zero.)
Also, the runtime PM core does usage counting and replaces
functionality currently managed by the dev->idle flag. Remove usage
of dev->idle in favor of using runtime PM, and checking status using
pm_runtime_suspended().
Signed-off-by: Kevin Hilman <khilman@ti.com>
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A pointer to the struct device associated with the i2c device is
already kept in the struct omap_i2c_dev, so use omap_i2c_device to
find the pointer to struct device.
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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Currently for OMAP4 the I2C_WE is not programmed.
This patch enables the programming for OMAP4.
This patch fixes a bad conflict resolution.
This effectively restores the following commit
Commit 120bdaa47[i2c-omap: Program I2C_WE on OMAP4 to enable i2c wakeup]
which got changed by
Commit a3a7acbc[I2C: OMAP2+: address confused probed version naming]
Reviewed-by: Felipe Balbi <balbi@ti.com>
Reported-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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The IP version is prepended to the existing printed probed
version as an "epoch" version.
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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from platform data
This patch eliminates all cpu_...() tests from the OMAP I2C driver.
Instead, it uses the functionality flags in the platform data to make
the decisions about product variations the driver needs to handle.
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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Most of the OMAP1 implementation flags are set statically, with the
exception that omap7xx has its data bus wired up differently.
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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This is how the driver can find the flags for its implementation
functionality in its platform_data
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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OMAP I2C driver can access the configuration flags through
its platform data.
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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The driver reflects the confusion that probed I2C revision
from the hardware of 0x40 means it is on an OMAP4430.
However, you will probe the same 0x40 ID on an OMAP3530. So
this patch changes the name to reflect that.
It also clarifies that the original name OMAP_I2C_REV_2 is
referring to some ancient OMAP1 revision number, not to be
confused with the IP revisions this patch series introduces.
Similarly the term "rev" is used in the ancient OMAP1 ISR,
the term is changed to use omap1 instead.
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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This solves the main problem the patch series is about. Prior
to this patch on OMAP3530 the driver wrongly interprets the I2C
peripheral unit's own reported revision as meaning it is running
on an IP V2 device and must use the extended registers.
In fact OMAP3530 is IP V1 with the smaller register set, the
reason for the confusion is that the hardware does in fact report
having the same IP revision index as is found on an OMAP4430,
which really is IP V2 and has the extended registers.
This corrects the test for which registers to use so that it
decides using hwmod knowledge found in the platform_data.
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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Change the register map names to reflect the IP revision they
are representing, and use the platform_data IP revision index
to select between them at init time.
Eliminates 1 of 17 cpu_...() calls in the driver.
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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Mark each OMAP I2C bus with the hwmod's knowledge of which I2C
IP version is in the chip we're running on.
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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All OMAP1 are using "IP revision 1" in terms of register
layout. We set this information in omap1_i2c_add_bus() so
we don't have to use cpu_is_xxx() any more in the omap i2c
driver.
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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We need to pass the I2C IP revision from the hwmod class up
into the OMAP I2C driver, which does not have direct
access to it.
This adds a member to the platform data the OMAP I2C driver
does use already to hold the I2C IP revision.
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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The OMAP I2C driver dynamically chooses between two register sets of
differing sizes depending on the cpu type it finds itself on.
It has been observed that the existing code references non-existing
registers on OMAP3530, because while it correctly chose the smaller
register layout based on cpu type, the code uses the probed register
ID to decide if to execute code referencing an extra register, and
both register layout devices on OMAP3530 and OMAP4430 report the same
probed ID of 0x40.
This patch changes the extended register names only found on IP V2
of the I2C peripheral unit accordingly to help show up errors in usage.
Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (178 commits)
ARM: 7139/1: fix compilation with CONFIG_ARM_ATAG_DTB_COMPAT and large TEXT_OFFSET
ARM: gic, local timers: use the request_percpu_irq() interface
ARM: gic: consolidate PPI handling
ARM: switch from NO_MACH_MEMORY_H to NEED_MACH_MEMORY_H
ARM: mach-s5p64x0: remove mach/memory.h
ARM: mach-s3c64xx: remove mach/memory.h
ARM: plat-mxc: remove mach/memory.h
ARM: mach-prima2: remove mach/memory.h
ARM: mach-zynq: remove mach/memory.h
ARM: mach-bcmring: remove mach/memory.h
ARM: mach-davinci: remove mach/memory.h
ARM: mach-pxa: remove mach/memory.h
ARM: mach-ixp4xx: remove mach/memory.h
ARM: mach-h720x: remove mach/memory.h
ARM: mach-vt8500: remove mach/memory.h
ARM: mach-s5pc100: remove mach/memory.h
ARM: mach-tegra: remove mach/memory.h
ARM: plat-tcc: remove mach/memory.h
ARM: mach-mmp: remove mach/memory.h
ARM: mach-cns3xxx: remove mach/memory.h
...
Fix up mostly pretty trivial conflicts in:
- arch/arm/Kconfig
- arch/arm/include/asm/localtimer.h
- arch/arm/kernel/Makefile
- arch/arm/mach-shmobile/board-ap4evb.c
- arch/arm/mach-u300/core.c
- arch/arm/mm/dma-mapping.c
- arch/arm/mm/proc-v7.S
- arch/arm/plat-omap/Kconfig
largely due to some CONFIG option renaming (ie CONFIG_PM_SLEEP ->
CONFIG_ARM_CPU_SUSPEND for the arm-specific suspend code etc) and
addition of NEED_MACH_MEMORY_H next to HAVE_IDE.
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TEXT_OFFSET
If TEXT_OFFSET is too large (e.g. like on MSM) the resulting immediate
argument gets wider than 8 bits.
Noticed by David Brown <davidb@codeaurora.org>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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git://github.com/mzyngier/arm-platforms into devel-stable
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This patch remove the hardcoded link between local timers and PPIs,
and convert the PPI users (TWD, MCT and MSM timers) to the new
*_percpu_irq interface. Also some collateral cleanup
(local_timer_ack() is gone, and the interrupt handler is strictly
private to each driver).
PPIs are now useable for more than just the local timers.
Additional testing by David Brown (msm8250 and msm8660) and
Shawn Guo (imx6q).
Cc: David Brown <davidb@codeaurora.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Brown <davidb@codeaurora.org>
Tested-by: David Brown <davidb@codeaurora.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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PPI handling is a bit of an odd beast. It uses its own low level
handling code and is hardwired to the local timers (hence lacking
a registration interface).
Instead, switch the low handling to the normal SPI handling code.
PPIs are handled by the handle_percpu_devid_irq flow.
This also allows the removal of some duplicated code.
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: David Brown <davidb@codeaurora.org>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Brown <davidb@codeaurora.org>
Tested-by: David Brown <davidb@codeaurora.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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devel-stable
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