Commit graph

1815 commits

Author SHA1 Message Date
Oskar Schirmer
8533848809 i2c: Change mail address of Oskar Schirmer
That old mail address doesnt exist any more.
This changes all occurences to my new address.

Signed-off-by: Oskar Schirmer <oskar@scara.com>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-05-17 15:15:56 +02:00
Benjamin Herrenschmidt
8b6ee04067 Merge branch 'merge' into next
We want the irq fixes from the "merge" branch.
2012-05-14 10:19:22 +10:00
Shawn Guo
b237866848 i2c: mxs: add device tree probe support
Add device tree probe support for i2c-mxs driver.  So far, it's only
been tested on imx28.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-13 08:27:44 +08:00
Marcus Folkesson
9868a060cc i2c: davinci: Free requested IRQ in remove
The freed IRQ is not necessary the one requested in probe.
Even if it was, with two or more i2c-controllers it will fails anyway.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: stable@kernel.org
2012-05-12 20:36:24 +02:00
Ganesan Ramalingam
a5063f16e2 i2c: ocores: register OF i2c devices
Call of_i2c_register_devices() in probe function to register i2c devices
specified in the device tree or OF.

Signed-off-by: Ganesan Ramalingam <ganesanr@broadcom.com>
Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>

[wsa: add proper braces]

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 16:49:54 +02:00
Laxman Dewangan
c889e91d2c i2c: tegra: notify transfer-complete after clearing status.
The notification of the transfer complete by calling complete()
should be done after clearing all interrupt status.
This avoids the race condition of misconfigure the i2c controller
in multi-core environment.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: stable@kernel.org
2012-05-12 16:10:12 +02:00
Lars-Peter Clausen
3ac0b33793 I2C: xiic: Add OF binding support
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:18 +02:00
Jean Delvare
e7065e20d9 i2c: Rename last mux driver to standard pattern
Update the MAINTAINERS entry and all other references accordingly.

Based on an original patch by Wolfram Sang.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Peter Korsgaard <peter.korsgaard@barco.com>

[wsa: fixed merge conflict due to rework in i2c_add_mux_adapter()]

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:18 +02:00
Laxman Dewangan
353f56b5f3 i2c: tegra: fix 10bit address configuration
The slave address of device to be configured in packet
header as follows:
    7 bit address: PacketHeader3[7:1]
    10 bit address: PacketHeader3[9:0]

Fixing the code to make packet header3 properly.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:18 +02:00
Wolfram Sang
b4f0b74ea3 i2c: muxes: rename first set of drivers to a standard pattern
Apply a naming pattern like in the rest of the subsystem to a first set
of mux drivers. Those drivers are the low-hanging fruit; we want to pick
them to motivate upcoming drivers to follow the new pattern. The missing
GPIO driver will be converted in a later patch.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> (pca9541)
Acked-by: Jean Delvare <khali@linux-fr.org>
2012-05-12 14:28:17 +02:00
Stephen Warren
643dd09eb2 i2c: implement i2c_verify_adapter
This converts a struct device * to a struct i2c_adapter * while verifying
that the device really is an I2C adapter. Just like i2c_verify_client.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:16 +02:00
Karol Lewandowski
ec39ef83eb i2c-s3c2410: Add HDMIPHY quirk for S3C2440
This patch adds support for s3c2440 I2C bus controller dedicated HDMIPHY device on
Exynos4 platform. Some quirks are introduced due to differences between HDMIPHY
and other I2C controllers on Exynos4.  These differences are:
- no GPIOs, HDMIPHY is inside the SoC and the controller is connected
  internally
- due to unknown reason (probably HW bug in HDMIPHY and/or the controller) a
  transfer fails to finish. The controller hangs after sending the last byte,
  the workaround for this bug is resetting the controller after each transfer

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Karol Lewandowski <k.lewandowsk@samsung.com>
Tested-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:16 +02:00
Karol Lewandowski
27452498a6 i2c-s3c2410: Rework device type handling
Reorganize driver a bit to better handle device tree-based systems:

 - move machine type to driver's private structure instead of
   quering platform device variants in runtime

 - replace s3c24xx_i2c_type enum with unsigned int that holds
   bitmask with revision-specific quirks

Signed-off-by: Karol Lewandowski <k.lewandowsk@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:16 +02:00
Wolfram Sang
951eef3955 i2c: muxes are not EXPERIMENTAL anymore
We got multiple patches to add mux support to device tree, so people are
using it happily already and build up on it. I also used it in a project
without encountering problems. 20 months of EXPERIMENTAL should do for
this.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Michael Lawnick <ml.lawnick@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: David Daney <ddaney.cavm@gmail.com>
2012-05-12 14:28:16 +02:00
David Daney
bc45449b14 i2c/of: Automatically populate i2c mux busses from device tree data.
For 'normal' i2c bus drivers, we can call of_i2c_register_devices()
and have the device tree framework automatically populate the bus with
the devices specified in the device tree.

This patch adds a common code to the i2c mux framework to have the mux
sub-busses be populated by the of_i2c_register_devices() too.  If the
mux device has an of_node, we populate the sub-bus' of_node so that
the subsequent call to of_i2c_register_devices() will find the
corresponding devices.

It seemed better to put this logic in i2c_add_mux_adapter() rather
than the individual mux drivers, as they will all probably want to do
the same thing.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Lars-Peter Clausen <lars@metafoo.de>

[wsa: removed superfluous ret-variable and fixed a typo in a comment]
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:16 +02:00
David Daney
5a3ecd5f98 i2c: Add a struct device * parameter to i2c_add_mux_adapter()
And adjust all callers.

The new device parameter is used in the next patch to initialize the
mux's of_node so that its children may be automatically populated.

Signed-off-by: David Daney <david.daney@cavium.com>
Tested-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:15 +02:00
Viresh Kumar
e1fac69f3b i2c: designware: Add clk_{un}prepare() support
clk_{un}prepare is mandatory for platforms using common clock framework. Since
this driver is used by SPEAr platform, which supports common clock framework,
add clk_{un}prepare() support for designware i2c.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:15 +02:00
Deepak Sikri
3bf3b289c2 i2c: designware: add PM support
This patch adds in support for standby/S2R/hybernate for i2c-designware driver.

Signed-off-by: Deepak Sikri <deepak.sikri@st.com>
Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:15 +02:00
Rob Herring
6923229380 i2c: ixp2000: remove driver
The platform is removed, so there are no users of this driver.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:14 +02:00
Roland Stigge
a092de11bb i2c: pnx: add device tree support
This patch adds device tree support to the pnx-i2c driver by using platform
resources for memory region and irq and removing dependency on mach includes.

The following platforms are affected:

* PNX
* LPC31xx (WIP)
* LPC32xx

The patch is based on a patch by Jon Smirl, working on lpc31xx integration

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:14 +02:00
Wolfram Sang
973c5ed45d i2c: imx: don't use strcpy but strlcpy
Signed-off-by: Wolfram Sang <wolfram@the-dreams.de>
2012-05-12 14:28:14 +02:00
Wolfram Sang
6188a37681 i2c: eg20t: don't use strcpy but strlcpy
Signed-off-by: Wolfram Sang <wolfram@the-dreams.de>
Cc: Tomoya MORINAGA <tomoya.rohm@gmail.com>
2012-05-12 14:28:14 +02:00
Wolfram Sang
4a5fe5cb5a i2c: eg20t: remove unused function
cppcheck rightfully says:
drivers/i2c/busses/i2c-eg20t.c:266: style: The function 'ktime_lt' is never used

Signed-off-by: Wolfram Sang <wolfram@the-dreams.de>
Cc: Tomoya MORINAGA <tomoya.rohm@gmail.com>
2012-05-12 14:28:14 +02:00
Wolfram Sang
772ae99c5b i2c: eg20t: pass on return value in i2c_xfer
smatch says:
drivers/i2c/busses/i2c-eg20t.c:702 pch_i2c_xfer() info: why not propagate 'ret' from mutex_lock_interruptible() instead of -512?

which is especially true since for -ENORESTARTSYS it is said in
linux/errno.h "signal_pending() MUST be set" which is not done here. So
just pass on the return value we got.

Signed-off-by: Wolfram Sang <wolfram@the-dreams.de>
Cc: Tomoya MORINAGA <tomoya.rohm@gmail.com>
2012-05-12 14:28:13 +02:00
Wolfram Sang
75fb1f25d4 i2c: eg20t: use NULL instead of 0
sparse rightfully says:
drivers/i2c/busses/i2c-eg20t.c:990:59: warning: Using plain integer as NULL pointer

Signed-off-by: Wolfram Sang <wolfram@the-dreams.de>
Cc: Tomoya MORINAGA <tomoya.rohm@gmail.com>
2012-05-12 14:28:13 +02:00
Tomoya MORINAGA
199bca2a72 i2c-eg20t: Merge two functions
By previous patch, pch_i2c_wait_for_xfer_complete can be merged
to pch_i2c_wait_for_check_xfer.

Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:13 +02:00
Tomoya MORINAGA
5cc056327a i2c-eg20t: add helper function for xfer check
Currently, there are the same code for xfer complete check processing.
So, I add helper function pch_i2c_wait_for_check_xfer.

Reported-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:13 +02:00
Tomoya MORINAGA
2761a81cee i2c-eg20t: Call init() when wait-event timeout occurs
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:13 +02:00
Zhao Chenhui
531183e5d2 i2c-mpc: avoid I2C abnormal after resuming from deep sleep
When entering deep sleep, the value in the registers I2CFDR and
I2CDFSRR are lost. This causes I2C access to fail after resuming.

Add suspend/resume routines to save/restore the registers
I2CFDR and I2CDFSRR.

Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:12 +02:00
Magnus Damm
ad33707417 i2c: sh_mobile: add device tree support
This patch enables DT support for the IIC driver
used on SH-based SoCs such as sh7722 and sh7724
among others as well as SH-Mobile SoCs such as
sh7367, sh7377, sh7372, sh73a0 and r8a7740.

Tested with out-of-tree DT support code on the
sh7372 Mackerel board.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:12 +02:00
Roland Stigge
26f8d43df7 i2c-pnx.c: Remove duplicated i2c.h
The platforms using i2c-pnx.c both defined a duplicated i2c.h (used nowhere
else). This patch removes those and integrates the contents into the driver
itself.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:12 +02:00
Roland Stigge
77701a8bab i2c-pnx.c: Use resources in platforms
As a precondition for device tree conversion, the platforms using i2c-pnx.c are
converted to using mem and irq resources instead of platform data.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:12 +02:00
Stefan Roese
a8a9f3fef1 i2c: designware: Add support for 16bit register access
The STM SPEAr platform can only access the i2c controller register
via 16bit read/write functions. This patch adds support to
automatically detect this 16bit access mode.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:11 +02:00
Karol Lewandowski
44454baa7c i2c: Dynamically assign adapter id if it wasn't explictly specified
Commit 488bf314b ("i2c: Allow i2c_add_numbered_adapter() to assign a
bus id") reworked i2c_add_numbered_adapter() to call i2c_add_adapter()
if requested bus was -1.

This allows to simplify driver's initialization procedure by using
just one function for static and dynamic adapter id registration.

This patch updates few more drivers (missed out in original patch)
to use this functionality.

Signed-off-by: Karol Lewandowski <k.lewandowsk@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:11 +02:00
Karol Lewandowski
bc414b7b9b i2c-pxa: Drop leftover comment
Commit 488bf314b ("i2c: Allow i2c_add_numbered_adapter() to assign a
bus id") reworked i2c-pxa driver leaving obsolete comment.

This commit simply drops it.

Signed-off-by: Karol Lewandowski <k.lewandowsk@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:11 +02:00
Karol Lewandowski
9df7eadf80 i2c-s3c2410: Drop unused define
Use standard of_match_ptr() to avoid defining variable unused
in non device tree builds.

Signed-off-by: Karol Lewandowski <k.lewandowsk@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-05-12 14:28:11 +02:00
Shawn Guo
844d0b5a0b Merge branches 'clk/mxs' and 'imx/pinctrl/for-3.5' into mxs/dt/for-3.5 2012-05-12 13:32:09 +08:00
Shawn Guo
d98d033c15 i2c: mxs: adopt pinctrl support
Cc: linux-i2c@vger.kernel.org
Cc: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-05-12 09:43:17 +08:00
Shawn Guo
15afbc6878 i2c: imx: adopt pinctrl support
Cc: linux-i2c@vger.kernel.org
Cc: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
2012-05-12 09:43:10 +08:00
Benjamin Herrenschmidt
81e5d8646f i2c/powermac: Register i2c devices from device-tree
This causes i2c-powermac to register i2c devices exposed in the
device-tree, enabling new-style probing of devices.

Note that we prefix the IDs with "MAC," in order to prevent the
generic drivers from matching. This is done on purpose as we only
want drivers specifically tested/designed to operate on powermacs
to match.

This removes the special case we had for the AMS driver, and updates
the driver's match table instead.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-04-30 15:37:17 +10:00
Wolfram Sang
1e4f0b8257 i2c: mxs: disable QUEUE when sending is done
Since the last fixes to this driver ensure now the queue termination is
done correctly, we can finally disable the queue after a transfer
without problems. The gain is that it will only be reenabled after the
next transfer is fully set up. Before, the queue was running all the
time and if the setup of the next message was interrupted by another
thread, an incomplete buffer could have been sent, padded with zeroes.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-04-27 16:13:29 +02:00
Wolfram Sang
c95eeae9e3 i2c: mxs: handle spurious interrupt
After an error interrupt setting cmd->err, I see another interrupt that
the data engine is empty which clears cmd->err before being processed.
So, clear cmd->err at the beginning of a transfer only to handle these
consecutive interrupts.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-04-25 22:59:44 +02:00
Tomoya MORINAGA
0964071367 i2c-eg20t: Modify MODULE_AUTHOR's email address
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-04-22 21:29:06 +02:00
Tomoya MORINAGA
8a52f9f347 i2c-eg20t: change timeout value 50msec to 1000msec
Currently, during i2c works alone, wait-event timeout is not occurred.
However, as CPU load increases, timeout occurs frequently.
So, I modified like this patch.
Modifying like this patch, I've never seen the timeout event with high
load test.

Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-04-22 21:29:06 +02:00
Alok Chauhan
f70893d083 i2c: tegra: Add delay before resetting the controller after NACK
NACK interrupt is generated before I2C controller generates the STOP
condition on bus. Because of this reset of controller is happening
before I2C controller could complete STOP condition. So wait for some
time before resetting the controller so that STOP condition has
delivered properly on bus.

Added delay of 2 clock period before resetting the controller in case of
NACK error.

Signed-off-by: Alok Chauhan <alokc@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>

[wsa: Reworded the commit msg and code comment a bit]

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-04-22 21:29:05 +02:00
Roland Stigge
6c557cfee0 i2c: pnx: Disable clk in suspend
In the driver's suspend function, clk_enable() was used instead of
clk_disable(). This is corrected with this patch.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
CC: stable@vger.kernel.org

[wsa: reworded commit header slightly]

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-04-22 21:29:05 +02:00
Roland Stigge
b41a216daf i2c: Add device tree support to i2c-pnx.c
This patch adds device tree support to the pnx-i2c driver by using platform
resources for memory region and irq and removing dependency on mach includes.

The following platforms are affected:

* PNX
* LPC31xx (WIP)
* LPC32xx

The patch is based on a patch by Jon Smirl, working on lpc31xx integration

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-04-22 11:59:47 +02:00
Roland Stigge
be460385af i2c-pnx.c: Remove duplicated i2c.h
The platforms using i2c-pnx.c both defined a duplicated i2c.h (used nowhere
else). This patch removes those and integrates the contents into the driver
itself.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-04-22 11:59:47 +02:00
Roland Stigge
1451ba3a5f i2c-pnx.c: Use resources in platforms
As a precondition for device tree conversion, the platforms using i2c-pnx.c are
converted to using mem and irq resources instead of platform data.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-04-22 11:59:47 +02:00
Roland Stigge
c4cea7fc1b i2c: pnx: Disable clk in suspend
In the driver's suspend function, clk_enable() was used instead of
clk_disable(). This is corrected with this patch.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
CC: stable@vger.kernel.org
2012-04-22 11:59:47 +02:00
Wolfram Sang
6b866c151a i2c: mxs: use global reset function
The former mach specific reset_block function has been converted to a global
one. Use the new one to remove mach dependency from the driver.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-04-20 23:27:18 +02:00
Masanari Iida
6b2aac42b2 Fix typo in various Kconfig file
Correct spelling typo in various Kconfig file.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-04-16 14:40:08 +02:00
Kristen Carlson Accardi
3a48d1c08f i2c: prevent spurious interrupt on Designware controllers
Don't call i2c_enable on resume because it causes a spurious
interrupt.

Signed-off-by:  Kristen Carlson Accardi <kristen@linux.intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-10 08:09:03 -07:00
Linus Torvalds
0195c00244 Disintegrate and delete asm/system.h
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Merge tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system

Pull "Disintegrate and delete asm/system.h" from David Howells:
 "Here are a bunch of patches to disintegrate asm/system.h into a set of
  separate bits to relieve the problem of circular inclusion
  dependencies.

  I've built all the working defconfigs from all the arches that I can
  and made sure that they don't break.

  The reason for these patches is that I recently encountered a circular
  dependency problem that came about when I produced some patches to
  optimise get_order() by rewriting it to use ilog2().

  This uses bitops - and on the SH arch asm/bitops.h drags in
  asm-generic/get_order.h by a circuituous route involving asm/system.h.

  The main difficulty seems to be asm/system.h.  It holds a number of
  low level bits with no/few dependencies that are commonly used (eg.
  memory barriers) and a number of bits with more dependencies that
  aren't used in many places (eg.  switch_to()).

  These patches break asm/system.h up into the following core pieces:

    (1) asm/barrier.h

        Move memory barriers here.  This already done for MIPS and Alpha.

    (2) asm/switch_to.h

        Move switch_to() and related stuff here.

    (3) asm/exec.h

        Move arch_align_stack() here.  Other process execution related bits
        could perhaps go here from asm/processor.h.

    (4) asm/cmpxchg.h

        Move xchg() and cmpxchg() here as they're full word atomic ops and
        frequently used by atomic_xchg() and atomic_cmpxchg().

    (5) asm/bug.h

        Move die() and related bits.

    (6) asm/auxvec.h

        Move AT_VECTOR_SIZE_ARCH here.

  Other arch headers are created as needed on a per-arch basis."

Fixed up some conflicts from other header file cleanups and moving code
around that has happened in the meantime, so David's testing is somewhat
weakened by that.  We'll find out anything that got broken and fix it..

* tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits)
  Delete all instances of asm/system.h
  Remove all #inclusions of asm/system.h
  Add #includes needed to permit the removal of asm/system.h
  Move all declarations of free_initmem() to linux/mm.h
  Disintegrate asm/system.h for OpenRISC
  Split arch_align_stack() out from asm-generic/system.h
  Split the switch_to() wrapper out of asm-generic/system.h
  Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h
  Create asm-generic/barrier.h
  Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h
  Disintegrate asm/system.h for Xtensa
  Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt]
  Disintegrate asm/system.h for Tile
  Disintegrate asm/system.h for Sparc
  Disintegrate asm/system.h for SH
  Disintegrate asm/system.h for Score
  Disintegrate asm/system.h for S390
  Disintegrate asm/system.h for PowerPC
  Disintegrate asm/system.h for PA-RISC
  Disintegrate asm/system.h for MN10300
  ...
2012-03-28 15:58:21 -07:00
Linus Torvalds
d2a2fc18d9 Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull i2c updates from Jean Delvare.

Fix up trivial conflict in drivers/i2c/busses/i2c-gpio.c due to include
file cleanup clashing with DT support addition (which did the same
cleanup)

* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c-algo-bit: Don't resched on clock stretching
  i2c: Update the FSF address
  i2c: Convert drivers/i2c/muxes/* to use module_i2c_driver()
  i2c-i801: Use usleep_range to wait for command completion
  i2c-i801: Add device IDs for Intel Lynx Point
  i2c-isch: Decrease delay in command completion check loop
  i2c-gpio: Use linux/gpio.h rather than asm/gpio.h
2012-03-28 14:12:15 -07:00
Linus Torvalds
09893ee845 ARM: More device tree support updates
This branch contains a number of updates for device tree support on
 several ARM platforms, in particular:
 
 * AT91 continues the device tree conversion adding support for a number of
   on-chip drivers and other functionality
 * ux500 adds probing of some of the core SoC blocks through device tree
 * Initial device tree support for ST SPEAr600 platforms
 * kirkwood continues the conversion to device-tree probing
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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: More device tree support updates" from Olof Johansson:
 "This branch contains a number of updates for device tree support on
  several ARM platforms, in particular:

   * AT91 continues the device tree conversion adding support for a
     number of on-chip drivers and other functionality
   * ux500 adds probing of some of the core SoC blocks through device
     tree
   * Initial device tree support for ST SPEAr600 platforms
   * kirkwood continues the conversion to device-tree probing"

Manually merge arch/arm/mach-ux500/Kconfig due to MACH_U8500 rename, and
drivers/usb/gadget/at91_udc.c due to header file include cleanups.

Also do an "evil merge" for the MACH_U8500 config option rename that the
affected RMI4 touchscreen driver in staging.  It's called MACH_MOP500
now, and it was missed during previous merges.

* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (48 commits)
  ARM: SPEAr600: Add device-tree support to SPEAr600 boards
  ARM: ux500: Provide local timer support for Device Tree
  ARM: ux500: Enable PL022 SSP Controller in Device Tree
  ARM: ux500: Enable PL310 Level 2 Cache Controller in Device Tree
  ARM: ux500: Enable PL011 AMBA UART Controller for Device Tree
  ARM: ux500: Enable Cortex-A9 GIC (Generic Interrupt Controller) in Device Tree
  ARM: ux500: db8500: list most devices in the snowball device tree
  ARM: ux500: split dts file for snowball into generic part
  ARM: ux500: combine the board init functions for DT boot
  ARM: ux500: Initial Device Tree support for Snowball
  ARM: ux500: CONFIG: Enable Device Tree support for future endeavours
  ARM: kirkwood: use devicetree for rtc-mv
  ARM: kirkwood: rtc-mv devicetree bindings
  ARM: kirkwood: fdt: define uart[01] as disabled, enable uart0
  ARM: kirkwood: fdt: facilitate new boards during fdt migration
  ARM: kirkwood: fdt: absorb kirkwood_init()
  ARM: kirkwood: fdt: use mrvl ticker symbol
  ARM: orion: wdt: use resource vice direct access
  ARM: Kirkwood: Remove tclk from kirkwood_asoc_platform_data.
  ARM: orion: spi: remove enable_clock_fix which is not used
  ...
2012-03-28 12:34:33 -07:00
David Howells
9ffc93f203 Remove all #inclusions of asm/system.h
Remove all #inclusions of asm/system.h preparatory to splitting and killing
it.  Performed with the following command:

perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`

Signed-off-by: David Howells <dhowells@redhat.com>
2012-03-28 18:30:03 +01:00
Linus Torvalds
66f03c614c ARM: device tree work
Most of these patches convert code from using static platform data to
 describing the hardware in the device tree. This is only the first
 half of the changes for v3.4 because a lot of patches for this topic
 came in the last week before the merge window.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: device tree work" from Arnd Bergmann:
 "Most of these patches convert code from using static platform data to
  describing the hardware in the device tree.  This is only the first
  half of the changes for v3.4 because a lot of patches for this topic
  came in the last week before the merge window.

  Signed-off-by: Arnd Bergmann <arnd@arndb.de>"

Fix up trivial conflicts in arch/arm/mach-vexpress/{Kconfig,core.h}

* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (86 commits)
  Document: devicetree: add OF documents for arch-mmp
  ARM: dts: append DTS file of pxa168
  ARM: mmp: append OF support on pxa168
  ARM: mmp: enable rtc clk in pxa168
  i2c: pxa: add OF support
  serial: pxa: add OF support
  arm/dts: mt_ventoux: very basic support for TeeJet Mt.Ventoux board
  ARM: OMAP2+: Remove extra ifdefs for board-generic
  ARM: OMAP2+: Fix build error when only ARCH_OMAP2/3 or 4 is selected
  ASoC: DT: Add digital microphone binding to PAZ00 board.
  ARM: dt: Add ARM PMU to tegra*.dtsi
  ARM: at91: at91sam9x5cm/dt: add leds support
  ARM: at91: usb_a9g20/dt: add gpio-keys support
  ARM: at91: at91sam9m10g45ek/dt: add gpio-keys support
  ARM: at91: at91sam9m10g45ek/dt: add leds support
  ARM: at91: usb_a9g20/dt: add leds support
  ARM: at91/pio: add new PIO3 features
  ARM: at91: add sam9_smc.o to at91sam9x5 build
  ARM: at91/tc/clocksource: Add 32 bit variant to Timer Counter
  ARM: at91/tc: add device tree support to atmel_tclib
  ...
2012-03-27 16:47:35 -07:00
Linus Torvalds
34800598b2 ARM: driver specific updates
These are all specific to some driver. They are typically the platform
 side of a change in the drivers directory, such as adding a new driver
 or extending the interface to the platform. In cases where there is no
 maintainer for the driver, or the maintainer prefers to have the
 platform changes in the same branch as the driver changes, the patches
 to the drivers are included as well.
 
 A much smaller set of driver updates that depend on other branches
 getting merged first will be sent later.
 
 The new export of tegra_chip_uid conflicts with other changes in fuse.c.
 In rtc-sa1100.c, the global removal of IRQF_DISABLED conflicts with
 the cleanup of the interrupt handling of that driver.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: driver specific updates" from Arnd Bergmann:
 "These are all specific to some driver.  They are typically the
  platform side of a change in the drivers directory, such as adding a
  new driver or extending the interface to the platform.  In cases where
  there is no maintainer for the driver, or the maintainer prefers to
  have the platform changes in the same branch as the driver changes,
  the patches to the drivers are included as well.

  A much smaller set of driver updates that depend on other branches
  getting merged first will be sent later.

  The new export of tegra_chip_uid conflicts with other changes in
  fuse.c.  In rtc-sa1100.c, the global removal of IRQF_DISABLED
  conflicts with the cleanup of the interrupt handling of that driver.

  Signed-off-by: Arnd Bergmann <arnd@arndb.de>"

Fixed up aforementioned trivial conflicts.

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (94 commits)
  ARM: SAMSUNG: change the name from s3c-sdhci to exynos4-sdhci
  mmc: sdhci-s3c: add platform data for the second capability
  ARM: SAMSUNG: support the second capability for samsung-soc
  ARM: EXYNOS: add support DMA for EXYNOS4X12 SoC
  ARM: EXYNOS: Add apb_pclk clkdev entry for mdma1
  ARM: EXYNOS: Enable MDMA driver
  regulator: Remove bq24022 regulator driver
  rtc: sa1100: add OF support
  pxa: magician/hx4700: Convert to gpio-regulator from bq24022
  ARM: OMAP3+: SmartReflex: fix error handling
  ARM: OMAP3+: SmartReflex: fix the use of debugfs_create_* API
  ARM: OMAP3+: SmartReflex: micro-optimization for sanity check
  ARM: OMAP3+: SmartReflex: misc cleanups
  ARM: OMAP3+: SmartReflex: move late_initcall() closer to its argument
  ARM: OMAP3+: SmartReflex: add missing platform_set_drvdata()
  ARM: OMAP3+: hwmod: add SmartReflex IRQs
  ARM: OMAP3+: SmartReflex: clear ERRCONFIG_VPBOUNDINTST only on a need
  ARM: OMAP3+: SmartReflex: Fix status masking in ERRCONFIG register
  ARM: OMAP3+: SmartReflex: Add a shutdown hook
  ARM: OMAP3+: SmartReflex Class3: disable errorgen before disable VP
  ...

Conflicts:
	arch/arm/mach-tegra/Makefile
	arch/arm/mach-tegra/fuse.c
	drivers/rtc/rtc-sa1100.c
2012-03-27 16:41:24 -07:00
Jean Delvare
41101a3302 i2c-algo-bit: Don't resched on clock stretching
Clock stretching is not supposed to last long, so asking to be
rescheduled while waiting for the clock line to be released by a slave
makes little sense. Odds are that the clock line will long have been
released when we run again, so we will have lost time and may even
get an SMBus timeout because of this.

So just busy-wait in that case. This also participates in the effort
to make i2c-algo-bit usable in contexts that can't sleep.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Ben Skeggs <bskeggs@redhat.com>
2012-03-26 21:47:19 +02:00
Jean Delvare
5694f8a888 i2c: Update the FSF address
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-03-26 21:47:19 +02:00
Axel Lin
de05497aab i2c: Convert drivers/i2c/muxes/* to use module_i2c_driver()
This patch converts the drivers in drivers/i2c/muxes/* to use the
module_i2c_driver() macro which makes the code smaller and a bit simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Michael Lawnick <ml.lawnick@gmx.de>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-03-26 21:47:19 +02:00
Jean Delvare
84c1af4c21 i2c-i801: Use usleep_range to wait for command completion
Use usleep_range instead of msleep when waiting for command
completion. Most SMBus commands complete in less than 2 jiffies so
this brings a pleasant performance boost.

Strongly inspired from a similar change by Olivier Sobrie to the
i2c-isch driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Olivier Sobrie <olivier@sobrie.be>
2012-03-26 21:47:19 +02:00
Seth Heasley
062737fb6d i2c-i801: Add device IDs for Intel Lynx Point
Add the SMBus controller device IDs for the Intel Lynx Point PCH.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-03-26 21:47:19 +02:00
Olivier Sobrie
b3240e68c0 i2c-isch: Decrease delay in command completion check loop
Generally it is not needed to wait for 1 msec, the SMBus get often ready
in less than 200 usecs.

msleep(1) can wait up to 20 msecs... It has a significant impact when
there is a burst of transactions on the bus.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-03-26 21:47:18 +02:00
Mark Brown
c54c35572a i2c-gpio: Use linux/gpio.h rather than asm/gpio.h
Direct inclusion of asm/gpio.h has been deprecated for a while now due
to the cross platform gpiolib.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-03-26 21:47:18 +02:00
Linus Torvalds
fc2bb8d1cd Merge branch 'i2c-embedded/for-3.4' of git://git.pengutronix.de/git/wsa/linux
Pull i2c embedded updates from Wolfram Sang:
 "Nothing special from i2c-embedded for this merge window.  Two new
  drivers, minor feature additions, bugfixes, cleanups.

  All patches have been in linux-next for some time, too."

* 'i2c-embedded/for-3.4' of git://git.pengutronix.de/git/wsa/linux:
  i2c-eg20t: Remove write-only variables
  i2c-eg20t: Rework pch_i2c_wait_for_bus_idle to reduce wait time
  i2c-s3c2410: Add stub runtime power management
  i2c-s3c2410: Convert to devm_kzalloc()
  i2c: add CSR SiRFprimaII on-chip I2C controllers driver
  i2c: tegra: Remove unnecessary write to INT_STATUS
  i2c: imx: fix imx driver to work though signal is pending
  i2c: designware: dw_i2c_init_driver as subsys initcall
  misc: at24: describe platform_data with kernel_doc
  i2c: Move I2C_EG20T option to the right place.
  i2c: Support for Netlogic XLR/XLS I2C controller.
  i2c: mpc: Add support for SMBUS_READ_BLOCK_DATA
  i2c: versatile: Add Device Tree support
2012-03-23 14:12:04 -07:00
Linus Torvalds
be53bfdb80 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm main changes from Dave Airlie:
 "This is the main drm pull request, I'm probably going to send two more
  smaller ones, will explain below.

  This contains a patch that is also in the fbdev tree, but it should be
  the same patch, it added an API for hot unplugging framebuffer
  devices, and I need that API for a new driver.

  It also contains some changes to the i2c tree which Jean has acked,
  and one change to moorestown platform stuff in x86.

  Highlights:
   - new drivers: UDL driver for USB displaylink devices, kms only,
     should support correct hotplug operations.
   - core: i2c speedups + better hotplug support, EDID overriding via
     firmware interface - allows user to load a firmware for a broken
     monitor/kvm from userspace, it even has documentation for it.
   - exynos: new HDMI audio + hdmi 1.4 + virtual output driver
   - gma500: code cleanup
   - radeon: cleanups, CS optimisations, streamout support and pageflip
     fix
   - nouveau: NVD9 displayport support + more reclocking work
   - i915: re-enabling GMBUS, finish gpu patch (might help hibernation
     who knows), missed irq fixes, stencil tiling fixes, interlaced
     support, aliasesd PPGTT support for SNB/IVB, swizzling for SNB/IVB,
     semaphore fixes

  As well as the usual bunch of cleanups and fixes all over the place.

  I've got two things I'd like to merge a bit later:

   a) AMD support for all their new radeonhd 7000 series GPU and APUs.
      AMD dropped this a bit late due to insane internal review
      processes, (please AMD just follow Intel and let open source guys
      ship stuff early) however I don't want to penalise people who own
      this hardware (since its been on sale for 3-4 months and GPU hw
      doesn't exactly have a lifetime in years) and consign them to
      using closed drivers for longer than necessary.  The changes are
      well contained and just plug into the driver new gpu functionality
      so they should be fairly regression proof.  I just want to give
      them a bit of a run on the hw AMD kindly sent me.

   b) drm prime/dma-buf interface code.  This is just infrastructure
      code to expose the dma-buf stuff to drm drivers and to userspace.
      I'm not planning on pushing any driver support in this cycle
      (except maybe exynos), but I'd like to get the infrastructure code
      in so for the next cycle I can start getting the driver support
      into the individual drivers.  We have started driver support for
      i915, nouveau and udl along with I think exynos and omap in
      staging.  However this code relies on the dma-buf tree being
      pulled into your tree first since it needs the latest interfaces
      from that tree.  I'll push to get that tree sent asap.

  (oh and any warnings you see in i915 are gcc's fault from what anyone
  can see)."

Fix up trivial conflicts in arch/x86/platform/mrst/mrst.c due to the new
msic_thermal_platform_data() thermal function being added next to the
tc35876x_platform_data() i2c device function..

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (326 commits)
  drm/i915: use DDC_ADDR instead of hard-coding it
  drm/radeon: use DDC_ADDR instead of hard-coding it
  drm: remove unneeded redefinition of DDC_ADDR
  drm/exynos: added virtual display driver.
  drm: allow loading an EDID as firmware to override broken monitor
  drm/exynos: enable hdmi audio feature
  drm/exynos: add default pixel format for plane
  drm/exynos: cleanup exynos_hdmi.h
  drm/exynos: add is_local member in exynos_drm_subdrv struct
  drm/exynos: add subdrv open/close functions
  drm/exynos: remove module of exynos drm subdrv
  drm/exynos: release pending pageflip events when closed
  drm/exynos: added new funtion to get/put dma address.
  drm/exynos: update gem and buffer framework.
  drm/exynos: added mode_fixup feature and code clean.
  drm/exynos: add HDMI version 1.4 support
  drm/exynos: remove exynos_mixer.h
  gma500: Fix mmap frambuffer
  drm/radeon: Drop radeon_gem_object_(un)pin.
  drm/radeon: Restrict offset for legacy display engine.
  ...
2012-03-22 13:08:22 -07:00
Dave Airlie
de49442f59 Merge tag 'drm-intel-next-2012-03-01' of git://people.freedesktop.org/~danvet/drm-intel into drm-next
* tag 'drm-intel-next-2012-03-01' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: Only clear the GPU domains upon a successful finish
  drm/i915: reenable gmbus on gen3+ again
  drm/i915: i2c: unconditionally set up gpio fallback
  drm/i915: merge gmbus and gpio i2c adpater into one
  drm/i915: merge struct intel_gpio into struct intel_gmbus
  i2c: export bit-banging algo functions
  drm/nouveau: do a better job at hiding the NIH i2c bit-banging algo
  drm/i915: add dev_priv to intel_gmbus
  drm/i915: Fix single msg gmbus_xfers writes
  drm/i915: error_buffer->ring should be signed
  drm/i915: Silence the error message from i915_wait_request()
  drm/i915: use the new hdmi_force_audio enum more
  drm/i915: No need to search again after retiring requests
  drm/i915: Only bump refcnt on objects scheduled for eviction
  drm/i915/bios: Downgrade the "signature missing" DRM_ERROR to debug
  drm/i915: Ignore LVDS on hp t5745 and hp st5747 thin client
  drm/i915: Fixes distorted external screen image on HP 2730p
2012-03-20 08:51:37 +00:00
Arnd Bergmann
2a9f23d82a Merge branch 'at91-3.4-cleanup2-DT2' of git://github.com/at91linux/linux-at91 into next/dt
* 'at91-3.4-cleanup2-DT2' of git://github.com/at91linux/linux-at91: (23 commits)
  ARM: at91: dt: enable usb ehci for sam9g45 and sam9x5
  ARM: at91: usb ehci add dt support
  ARM: at91: dt: enable usb ohci for sam9g20, sam9g45 amd sam9x5
  ARM: at91: usb ohci add dt support
  ARM: at91: add Shutdown Controller (SHDWC) DT support
  ARM: at91: add ram controller DT support
  ARM: at91: add RSTC (Reset Controller) dt support
  ARM: at91: always enable sam9 restart
  ARM: at91: add pmc DT support
  ARM: at91/dt: add specific DT soc init
  ARM: at91/dt: add Calao DAB-MMX daugther board support for USB-A9G20
  ARM: at91: sam9x5 add i2c DT support
  ARM: at91: sam9g45 add i2c DT support
  ARM: at91: usb_a9g20 add DT i2c support
  ARM: at91: sam9g20 add i2c DT support
  i2c/gpio: add DT support
  ARM: at91: sam9x5 add nand support
  atmel/nand: add DT support
  of/mtd/nand: add generic bindings and helpers
  of: introduce helper to manage boolean
  ...
2012-03-16 13:05:46 +00:00
Ville Syrjala
8ee161ce5e i2c-algo-bit: Fix spurious SCL timeouts under heavy load
When the system is under heavy load, there can be a significant delay
between the getscl() and time_after() calls inside sclhi(). That delay
may cause the time_after() check to trigger after SCL has gone high,
causing sclhi() to return -ETIMEDOUT.

To fix the problem, double check that SCL is still low after the
timeout has been reached, before deciding to return -ETIMEDOUT.

Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Cc: stable@vger.kernel.org
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-03-15 18:11:05 +01:00
Wolfram Sang
834aa6f30c i2c-core: Comment says "transmitted" but means "received"
Fix that. Also convert this and the related comment to proper commenting
style.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-03-15 18:11:05 +01:00
Jean-Christophe PLAGNIOL-VILLARD
8ffaa0f40d i2c/gpio: add DT support
To achieve DT support, we need to populate a custom platform_data in a
private struct from DT information. To simplify code, the adapter and
algorithm are also put into the private struct.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-03-15 23:29:22 +08:00
Olof Johansson
990b07d952 Merge branch 'regulator' of git://github.com/hzhuang1/linux into next/drivers
* 'regulator' of git://github.com/hzhuang1/linux: (2 commits)
  regulator: Remove bq24022 regulator driver
  pxa: magician/hx4700: Convert to gpio-regulator from bq24022

  (plus update to v3.3-rc6)
2012-03-08 09:33:44 -08:00
Alexander Stein
bbceeee82e i2c-eg20t: Remove write-only variables
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-03-07 19:26:22 +01:00
Alexander Stein
0836c80901 i2c-eg20t: Rework pch_i2c_wait_for_bus_idle to reduce wait time
If you insert several i2c transfers, the driver might start the next one
while the STOP bit of the previous transfer is still on the bus, marking
the bus as busy.
pch_i2c_wait_for_bus_idle does an msleep(20) delaying the next transfer
by >=20ms. Reduce wait time by actively waiting 5 us once, then using
usleep_range.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Acked-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-03-07 19:07:04 +01:00
Mark Brown
c62c3ca55e i2c-s3c2410: Add stub runtime power management
Add stub runtime_pm calls which go through the flow of enabling and
disabling but don't actually do anything with the device itself as
there's nothing useful we can do. This provides the core PM framework
with information about when the device is idle, enabling chip wide
power savings.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-03-07 19:06:59 +01:00
Mark Brown
4ea1557ff7 i2c-s3c2410: Convert to devm_kzalloc()
Saves remembering to call kfree(). There's some kfree()s used by the
resource still, these will be removed in 3.3 using the newly added
devm_request_and_ioremap().

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-03-07 19:06:53 +01:00
Zhiwu Song
979b907fa5 i2c: add CSR SiRFprimaII on-chip I2C controllers driver
SiRFprimaII is the latest generation application processor from CSR’s
multi-function SoC product family.
The SoC support codes are in arch/arm/mach-prima2 from Linux mainline
3.0.
There are two I2C controllers on primaII, features include:
* Two I2C controller modules are on chip
* RISC I/O bus read write register
* Up to 16 bytes data buffer for issuing commands and writing data
  at the same time
* Up to 16 commands, and receiving read data 16 bytes at a time
* Error INT report (ACK check)
* No-ACK bus protocols (SCCB bus protocols)

Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Xiangzhen Ye <Xiangzhen.Ye@csr.com>
Signed-off-by: Yuping Luo <Yuping.Luo@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-03-07 19:05:04 +01:00
Alok Chauhan
bf6c2de11c i2c: tegra: Remove unnecessary write to INT_STATUS
The write is not necessary and may cause the I2C controller to misbehave.
With this fix, I2C on Tegra30 works (at least, running i2cdump repeatedly
on the WM8903 on Cardhu's I2C5/DVC bus).

Signed-off-by: Alok Chauhan <alokc@nvidia.com>
[swarren: Reworded commit description]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-03-07 19:04:06 +01:00
Haojian Zhuang
63fe122bce i2c: pxa: add OF support
Append these properties in below.
mrvl,i2c-polling
mrvl,i2c-fast-mode

Still keep slave, slave_addr and class in platform data.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2012-03-07 09:32:03 +08:00
Daniel Vetter
b0209b3995 i2c: export bit-banging algo functions
i915 has a hw i2c controller (gmbus) but for a bunch of stupid reasons
we need to be able to fall back to the bit-banging algo on gpio pins.

The current code sets up a 2nd i2c controller for the same i2c bus using
the bit-banging algo. This has a bunch of issues, the major one being
that userspace can directly access this fallback i2c adaptor behind
the drivers back.

But we need to frob a few registers before and after using fallback
gpio bit-banging, so this horribly fails.

The new plan is to only set up one i2c adaptor and transparently fall
back to bit-banging by directly calling the xfer function of the bit-
banging algo in the i2c core.

To make that possible, export the 2 i2c algo functions.

v2: As suggested by Jean Delvare, simply export the i2c_bit_algo
vtable instead of the individual functions.

Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-02-29 20:47:42 +01:00
Oskar Schirmer
bb79a0798d i2c: imx: fix imx driver to work though signal is pending
Interrupt a test application for I2C based mc13xxx driven
touch panel, SIGINT, causes open event file descriptor to be
closed, which in turn causes I2C activity to mask PMIC local
interrupts. This eventually ends up in i2c_imx_bus_busy to
wait for some busy flag to toggle, but while waiting it would
find a signal pending and break. The final symptom is the
device is not closed down cleanly and thus not reopenable.

Do without check for pending signal.

Signed-off-by: Oskar Schirmer <oskar@scara.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-02-29 20:21:24 +01:00
Pratyush Anand
104522806a i2c: designware: dw_i2c_init_driver as subsys initcall
There are few drivers which are available on i2c bus but have been initialized
with subsys_initcall. Also as I2C is a bus driver, it should be available as
early as possible.

Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>

[wsa: Slightly updated the commit message]

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-02-29 20:21:03 +01:00
Wolfram Sang
844990daa2 i2c: mxs: only flag completion when queue is completely done
The hardware generates an interrupt for every completed command in the
queue while the code assumed that it will only generate one interrupt
when the queue is empty. So, explicitly check if the queue is really
empty. This patch fixed problems which occurred due to high traffic on
the bus. While we are here, move the completion-initialization after the
parameter error checking.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Lothar Waßmann <LW@KARO-electronics.de>
Cc: stable@kernel.org
2012-02-24 22:28:27 +01:00
Jayachandran C
3e1b76be0b i2c: Move I2C_EG20T option to the right place.
Move Kconfig option for I2C_EG20T to the correct position and keep
the options sorted.

Also, use tabs in Makefile and move the I2C_EG20T entry to its
position.

Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-02-24 22:25:58 +01:00
Ganesan Ramalingam
401c3434c4 i2c: Support for Netlogic XLR/XLS I2C controller.
Add support for the intergrated I2C controller on Netlogic
XLR/XLS MIPS SoC.

The changes are to add a new file i2c/buses/i2c-xlr.c, containing the
i2c bus implementation, and to update i2c/buses/{Kconfig,Makefile} to
add the CONFIG_I2C_XLR option.

Signed-off-by: Ganesan Ramalingam <ganesanr@netlogicmicro.com>
Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-02-24 22:25:57 +01:00
Tang Yuantian
3f0e1e4bb6 i2c: mpc: Add support for SMBUS_READ_BLOCK_DATA
Add support for SMBUS_READ_BLOCK_DATA to the i2c-mpc bus driver.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-02-24 22:25:30 +01:00
Pawel Moll
237ab4062d i2c: versatile: Add Device Tree support
This patch adds Device Tree binding ("arm,versatile-i2c") and
basic support (bus population) to versatile-i2c driver.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>

[wsa: constified match-table]

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2012-02-24 22:25:07 +01:00
Arnd Bergmann
2daa79ec21 Merge branch 'lpc32xx/drivers' into next/drivers
* lpc32xx/drivers: (566 commits)
  ARM: LPC32xx: ADC support for mach-lpc32xx

Includes an update to Linux 3.3-rc4

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-02-22 14:20:18 +00:00
Arnd Bergmann
0dcd627896 Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra into fixes
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra:
  ARM: tegra: paz00: fix wrong UART port on mini-pcie plug
  ARM: tegra: paz00: fix wrong SD1 power gpio
  i2c: tegra: Add devexit_p() for remove
  ARM: tegra: dma: fix buildbreak for !CONFIG_TEGRA_SYSTEM_DMA
2012-02-13 05:40:38 +00:00
Shubhrajyoti Datta
218d06d794 i2c: tegra: Add devexit_p() for remove
It was originally missed in the __devinit/__devexit annotations.

Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06 18:32:45 -08:00
Richard Zhao
83914337d1 i2c: imx: add clk_prepare/clk_unprepare
It's for migrating to generic clk framework API.

Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-02-01 14:29:31 +01:00
Cousson, Benoit
6c5aa407d5 i2c: OMAP: Fix OMAP1 build error
CONFIG_OF is not defined for OMAP1 yet and thus the omap1_defconfig build
generate an error for 3.3-rc1.

drivers/i2c/busses/i2c-omap.c: In function 'omap_i2c_probe':
drivers/i2c/busses/i2c-omap.c:1021:26: error: 'omap_i2c_of_match' undeclared (first use in this function)
drivers/i2c/busses/i2c-omap.c:1021:26: note: each undeclared identifier is reported only once for each function it appears in

Wrap omap_i2c_of_match with of_match_ptr() to prevent compilation error in case of OMAP1 build.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-01-20 08:24:22 -08:00
Ben Dooks
6f36a806e5 Merge branches 'for-33/i2c/eg20t' and 'for-33/i2c/omap' into for-linus/i2c-33 2012-01-17 23:30:41 +00:00
Tomoya MORINAGA
8956dc102c i2c-eg20t: Change-company-name-OKI-SEMICONDUCTOR to LAPIS Semiconductor
On October 1 in 2011,
OKI SEMICONDUCTOR Co., Ltd. changed the company name in to LAPIS Semiconductor Co., Ltd.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2012-01-17 23:29:56 +00:00
Tomoya MORINAGA
c3f4661f55 i2c-eg20t: Support new device LAPIS Semiconductor ML7831 IOH
ML7831 is companion chip for Intel Atom E6xx series.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2012-01-17 23:29:52 +00:00
Toshiharu Okada
ff35e8b189 i2c-eg20t: modified the setting of transfer rate.
This patch modified the setting value of
I2C Bus Transfer Rate Setting Counter regisrer.

Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2012-01-17 23:28:18 +00:00
Feng Tang
07e8a51ff6 i2c-eg20t: use i2c_add_numbered_adapter to get a fixed bus number
For EG20T and ML7213 IOH, the i2c controller numbers are fixed, using
fixed bus number will make it much easier for platform code to use
i2c_register_board_info() to register i2c devices.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2012-01-17 23:24:37 +00:00
Benoit Cousson
6145197be6 i2c: OMAP: Add DT support for i2c controller
Add initial DT support to retrieve the frequency using a
DT attribute instead of the pdata pointer if of_node exist.

Add documentation for omap i2c controller binding.

Based on original patches from Manju and Grant.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Reviewed-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-01-17 22:44:57 +00:00
Jan Weitzel
78e1cf42ee I2C: OMAP: NACK without STP
On OMAP4 OMAP_I2C_STAT_NACK is causing a timeout on the next access.
The isr cleans all flags in OMAP_I2C_CON_REG by setting OMAP_I2C_CON_STP
OMAP_I2C_CON_STP is also set in omap_i2c_xfer_msg on the last message.

According to the TI TSR the sequence for OMAP_I2C_STAT_NACK and
OMAP_I2C_STAT_AL are nearly the same.
Removing the OMAP_I2C_CON_STP part in the isr fix the problem.
Tested on OMAP4430 and OMAP3530 (here NACK was not a problem)
Fixes also booting on 2430sdp.

Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-01-17 22:44:54 +00:00
Alexander Aring
2727b17539 I2C: OMAP: correct SYSC register offset for OMAP4
Correct OMAP_I2C_SYSC_REG offset in omap4 register map.
Offset 0x20 is reserved and OMAP_I2C_SYSC_REG has 0x10 as offset.

Signed-off-by: Alexander Aring <a.aring@phytec.de>
[khilman@ti.com: minor changelog edits]
Cc: stable@vger.kernel.org
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-01-17 22:44:52 +00:00
Linus Torvalds
4964e0664c Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (119 commits)
  MIPS: Delete unused function add_temporary_entry.
  MIPS: Set default pci cache line size.
  MIPS: Flush huge TLB
  MIPS: Octeon: Remove SYS_SUPPORTS_HIGHMEM.
  MIPS: Octeon: Add support for OCTEON II PCIe
  MIPS: Octeon: Update PCI Latency timer and enable more error reporting.
  MIPS: Alchemy: Update cpu-feature-overrides
  MIPS: Alchemy: db1200: Improve PB1200 detection.
  MIPS: Alchemy: merge Au1000 and Au1300-style IRQ controller code.
  MIPS: Alchemy: chain IRQ controllers to MIPS IRQ controller
  MIPS: Alchemy: irq: register pm at irq init time
  MIPS: Alchemy: Touchscreen support on DB1100
  MIPS: Alchemy: Hook up IrDA on DB1000/DB1100
  net/irda: convert au1k_ir to platform driver.
  MIPS: Alchemy: remove unused board headers
  MTD: nand: make au1550nd.c a platform_driver
  MIPS: Netlogic: Mark Netlogic chips as SMT capable
  MIPS: Netlogic: Add support for XLP 3XX cores
  MIPS: Netlogic: Merge some of XLR/XLP wakup code
  MIPS: Netlogic: Add default XLP config.
  ...

Fix up trivial conflicts in arch/mips/kernel/{perf_event_mipsxx.c,
traps.c} and drivers/tty/serial/Makefile
2012-01-14 13:05:21 -08:00
Linus Torvalds
0a80939b3e Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1
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Merge tag 'for-linus' of git://github.com/rustyrussell/linux

Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999  BFCB D920 0E6C D1AD B8F1

* tag 'for-linus' of git://github.com/rustyrussell/linux:
  module_param: check that bool parameters really are bool.
  intelfbdrv.c: bailearly is an int module_param
  paride/pcd: fix bool verbose module parameter.
  module_param: make bool parameters really bool (drivers & misc)
  module_param: make bool parameters really bool (arch)
  module_param: make bool parameters really bool (core code)
  kernel/async: remove redundant declaration.
  printk: fix unnecessary module_param_name.
  lirc_parallel: fix module parameter description.
  module_param: avoid bool abuse, add bint for special cases.
  module_param: check type correctness for module_param_array
  modpost: use linker section to generate table.
  modpost: use a table rather than a giant if/else statement.
  modules: sysfs - export: taint, coresize, initsize
  kernel/params: replace DEBUGP with pr_debug
  module: replace DEBUGP with pr_debug
  module: struct module_ref should contains long fields
  module: Fix performance regression on modules with large symbol tables
  module: Add comments describing how the "strmap" logic works

Fix up conflicts in scripts/mod/file2alias.c due to the new linker-
generated table approach to adding __mod_*_device_table entries.  The
ARM sa11x0 mcp bus needed to be converted to that too.
2012-01-14 12:32:16 -08:00
Rusty Russell
90ab5ee941 module_param: make bool parameters really bool (drivers & misc)
module_param(bool) used to counter-intuitively take an int.  In
fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
trick.

It's time to remove the int/unsigned int option.  For this version
it'll simply give a warning, but it'll break next kernel version.

Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-01-13 09:32:20 +10:30
Axel Lin
245e99cfe8 i2c/gpio-i2cmux: Convert to use module_platform_driver()
Convert gpio-i2cmux to use the module_platform_driver() macro which
makes the code smaller and a bit simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Peter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-01-12 20:32:04 +01:00
Axel Lin
a3664b51c7 i2c/busses: Use module_platform_driver()
Convert the drivers in drivers/i2c/busses/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.

Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Jochen Friedrich <jochen@scram.de>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: Barry Song <21cnbao@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Yong Zhang <yong.zhang0@gmail.com>
Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-01-12 20:32:04 +01:00
Thomas Meyer
a699ed6f1f i2c-dev: Use memdup_user
Use memdup_user rather than duplicating its implementation.
This is a little bit restricted to reduce false positives.

The semantic patch that makes this output is available
in scripts/coccinelle/api/memdup_user.cocci.

More information about semantic patching is available at
http://coccinelle.lip6.fr/

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-01-12 20:32:04 +01:00
Axel Lin
3527bd5045 i2c: Convert to DEFINE_PCI_DEVICE_TABLE
Convert static struct pci_device_id *[] to static DEFINE_PCI_DEVICE_TABLE
tables.

Use DEFINE_PCI_DEVICE_TABLE ensures we make the pci_device_id table const
and marked as __devinitconst.

This also fixes some warnings from checkpatch:
e.g.
WARNING: Use DEFINE_PCI_DEVICE_TABLE for struct pci_device_id
#1096: FILE: i2c/busses/i2c-intel-mid.c:1096:
+static struct pci_device_id intel_mid_i2c_ids[] = {

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Olof Johansson <olof@lixom.net>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Acked-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Cc: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Feng Tang <feng.tang@intel.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-01-12 20:32:04 +01:00
corentin.labbe
65a2d74b76 i2c-ali1535: enable SPARC support
The i2c-ali1535 driver doesn't work on SPARC, because it assumes that
ioport address are 16-bit wide (address stored in an unsigned short).
But on SPARC arch, ioports are mapped in memory and so must be stored
in an unsigned long.

Use pci_resource_start for getting IOMEM base address, then read the
SMBBA of the i2c bus and use these together for I/O access.

I would like to thank Jean DELVARE for reviewing my patch.

Signed-off-by: LABBE Corentin <corentin.labbe@geomatys.fr>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-01-12 20:32:04 +01:00
Jean Delvare
7c1f59c9d5 i2c: Fix error value returned by several bus drivers
When adding checks for ACPI resource conflicts to many bus drivers,
not enough attention was paid to the error paths, and for several
drivers this causes 0 to be returned on error in some cases. Fix this
by properly returning a non-zero value on every error.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org
2012-01-12 20:32:03 +01:00
Linus Torvalds
c2e08e7ce5 Merge branch 'unicore32' of git://github.com/gxt/linux
* 'unicore32' of git://github.com/gxt/linux:
  rtc-puv3: solve section mismatch in rtc-puv3.c
  rtc-puv3: using module_platform_driver()
  i2c-puv3: using module_platform_driver()
  rtc-puv3: irq: remove IRQF_DISABLED
  unicore32: Remove IRQF_DISABLED
  unicore32: Use set_current_blocked()
  unicore32: add ioremap_nocache definition
  unicore32: delete specified xlate_dev_mem_ptr
  of: add include asm/setup.h in drivers/of/fdt.c
  unicore32: standardize /proc/iomem "Kernel code" name
2012-01-10 17:37:20 -08:00
Guan Xuetao
858af58f67 i2c-puv3: using module_platform_driver()
This patch converts the driver to use the module_platform_driver()
macro which makes the code smaller and a bit simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
2012-01-10 10:29:41 +08:00
Linus Torvalds
2ac9d7aacc Driver specific changes
Again, a lot of platforms have changes in here: pxa, samsung, omap,
 at91, imx, ...
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Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Driver specific changes

Again, a lot of platforms have changes in here: pxa, samsung, omap,
at91, imx, ...

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits)
  ARM: sa1100: clean up of the clock support
  ARM: pxa: add dummy clock for sa1100-rtc
  RTC: sa1100: support sa1100, pxa and mmp soc families
  RTC: sa1100: remove redundant code of setting alarm
  RTC: sa1100: Clean out ost register
  Input: zylonite-wm97xx - replace IRQ_GPIO() with gpio_to_irq()
  pcmcia: pxa: replace IRQ_GPIO() with gpio_to_irq()
  ARM: EXYNOS: Modified files for SPI consolidation work
  ARM: S5P64X0: Enable SDHCI support
  ARM: S5P64X0: Add lookup of sdhci-s3c clocks using generic names
  ARM: S5P64X0: Add HSMMC setup for host Controller
  ARM: EXYNOS: Add USB OHCI support to ORIGEN board
  USB: Add Samsung Exynos OHCI diver
  ARM: EXYNOS: Add USB OHCI support to SMDKV310 board
  ARM: EXYNOS: Add USB OHCI device
  net: macb: fix build break with !CONFIG_OF
  i2c: tegra: Support DVC controller in device tree
  i2c: tegra: Add __devinit/exit to probe/remove
  net/at91_ether: use gpio_is_valid for phy IRQ line
  ARM: at91/net: add macb ethernet controller in 9g45/9g20 DT
  ...
2012-01-09 14:39:22 -08:00
Arnd Bergmann
dcf7ec5ee6 Merge branch 'samsung/driver' into next/drivers
Conflicts:
	arch/arm/mach-mxs/include/mach/common.h

Pull in previous samsung conflict merges and do a trivial
merge of an mxs double-add conflict.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-01-09 16:16:29 +00:00
Linus Torvalds
98793265b4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (53 commits)
  Kconfig: acpi: Fix typo in comment.
  misc latin1 to utf8 conversions
  devres: Fix a typo in devm_kfree comment
  btrfs: free-space-cache.c: remove extra semicolon.
  fat: Spelling s/obsolate/obsolete/g
  SCSI, pmcraid: Fix spelling error in a pmcraid_err() call
  tools/power turbostat: update fields in manpage
  mac80211: drop spelling fix
  types.h: fix comment spelling for 'architectures'
  typo fixes: aera -> area, exntension -> extension
  devices.txt: Fix typo of 'VMware'.
  sis900: Fix enum typo 'sis900_rx_bufer_status'
  decompress_bunzip2: remove invalid vi modeline
  treewide: Fix comment and string typo 'bufer'
  hyper-v: Update MAINTAINERS
  treewide: Fix typos in various parts of the kernel, and fix some comments.
  clockevents: drop unknown Kconfig symbol GENERIC_CLOCKEVENTS_MIGR
  gpio: Kconfig: drop unknown symbol 'CS5535_GPIO'
  leds: Kconfig: Fix typo 'D2NET_V2'
  sound: Kconfig: drop unknown symbol ARCH_CLPS7500
  ...

Fix up trivial conflicts in arch/powerpc/platforms/40x/Kconfig (some new
kconfig additions, close to removed commented-out old ones)
2012-01-08 13:21:22 -08:00
Linus Torvalds
02550d61f4 devicetree/next changes queued for v3.3 merge window
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Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux-2.6

devicetree/next changes queued for v3.3 merge window

* tag 'devicetree-for-linus-20120104' of git://git.secretlab.ca/git/linux-2.6:
  ARM: prom.h: Fix build error by removing unneeded header file
  irq: check domain hwirq range for DT translate
  dt: add empty of_get_node/of_put_node functions
  of/pdt: fix section mismatch warning
  i2c-designware: add OF binding support
  dt/i2c: Enumerate some of the known trivial i2c devices
  dt: reform for_each_property to for_each_property_of_node
  ARM/of: allow *machine_desc.dt_compat to be const
  of/base: Take NULL string into account for property with multiple strings
  OF/device-tree: Add some entries to vendor-prefixes.txt

Fix up trivial add-add conflicts in include/linux/of.h
2012-01-07 12:18:52 -08:00
Greg Kroah-Hartman
ff4b8a57f0 Merge branch 'driver-core-next' into Linux 3.2
This resolves the conflict in the arch/arm/mach-s3c64xx/s3c6400.c file,
and it fixes the build error in the arch/x86/kernel/microcode_core.c
file, that the merge did not catch.

The microcode_core.c patch was provided by Stephen Rothwell
<sfr@canb.auug.org.au> who was invaluable in the merge issues involved
with the large sysdev removal process in the driver-core tree.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-06 11:42:52 -08:00
Al Viro
d36b691077 misc latin1 to utf8 conversions
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-01-02 13:04:55 +01:00
Rob Herring
af71100c7a i2c-designware: add OF binding support
Add of_match_table and DT style i2c registration to designware i2c
driver.

Refactored for pci/plat split by Dirk Brandewie.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
2011-12-27 15:52:44 -06:00
Stephen Warren
68fb669554 i2c: tegra: Support DVC controller in device tree
One of the Tegra I2C blocks is inside the DVC (Digital Voltage Controller)
block. This block is identical to the rest of the I2C blocks, except that
it only supports master mode, it has registers moved around, and it needs
some extra init to get it into I2C mode.  The register moves are handled
by i2c_readl and i2c_writel

This patch adds a new compatible value for controllers of this "DVC"
type; I figured that this approach was reasonable, as opposed to adding
an is-dvc property under the existing compatible value, since the HW
truly is different.

v2: Call of_device_is_compatible() to determine is_dvc, instead of storing
the flag in tegra_i2c_of_match[]'s .data field.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-12-19 17:54:20 -08:00
Stephen Warren
92891da11a i2c: tegra: Add __devinit/exit to probe/remove
This fixes some section mismatch build warnings.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-12-19 17:54:20 -08:00
Feng Tang
0d5fb5ea7d i2c-eg20t: correct the driver init order of pch_i2c_probe()
Before registering an adapter to i2c subsystem, we need make sure
driver is ready for incoming i2c xfer, becasue the i2c_add_adapter()
may trigger a i2c device driver's proble function which may start
some real i2c xfer. I met this issue when integrating a TSC2007 i2c
touch screen device with the i2c-eg20t driver.

This patch will call request_irq() and hw init before calling
i2c_add_adapter().

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-12-18 11:46:42 +00:00
Shubhrajyoti D
1d5a34fe99 I2C: OMAP: fix FIFO usage for OMAP4
Currently the fifo depth is set to zero for OMAP4 which disables
the FIFO usage. This patch enables the FIFO usage for I2C transactions
on OMAP4 also.

Tested on omap4430 and 3430.

Tested-and-Reported-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-12-18 11:45:54 +00:00
Tushar Behera
8ebe661dd2 i2c-s3c2410: Fix return code of s3c24xx_i2c_parse_dt_gpio
s3c24xx_i2c_parse_dt_gpio is called when cfg_gpio is not defined
in the platform data of the i2c device. When DT is not enabled,
the above function always returns -EINVAL. Since there can be
some i2c devices which don't need to configure any gpio lines,
the probe of such devices would fail here. Changing the default
return value to success would fix this issue.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-12-18 11:44:49 +00:00
Mark Brown
37de03ea12 i2c: i2c-s3c2410: Add a cpu_relax() to busy wait for bus idle
Be a bit more friendly.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-12-18 11:44:26 +00:00
Manuel Lauss
809f36c6f4 MIPS: Alchemy: Au1300 SoC support
Add basic support for the Au1300 variant(s):
- New GPIO/Interrupt controller
- DBDMA ids
- USB setup
- MMC support
- enable various PSC drivers
- detection code.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2866/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07 22:02:05 +00:00
Linus Torvalds
3b120ab762 Merge branch 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
  ARM: 7182/1: ARM cpu topology: fix warning
  ARM: 7181/1: Restrict kprobes probing SWP instructions to ARMv5 and below
  ARM: 7180/1: Change kprobes testcase with unpredictable STRD instruction
  ARM: 7177/1: GIC: avoid skipping non-existent PPIs in irq_start calculation
  ARM: 7176/1: cpu_pm: register GIC PM notifier only once
  ARM: 7175/1: add subname parameter to mfp_set_groupg callers
  ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels
  ARM: 7172/1: dma: Drop GFP_COMP for DMA memory allocations
  ARM: 7171/1: unwind: add unwind directives to bitops assembly macros
  ARM: 7170/2: fix compilation breakage in entry-armv.S
  ARM: 7168/1: use cache type functions for arch_get_unmapped_area
  ARM: perf: check that we have a platform device when reserving PMU
  ARM: 7166/1: Use PMD_SHIFT instead of PGDIR_SHIFT in dma-consistent.c
  ARM: 7165/2: PL330: Fix typo in _prepare_ccr()
  ARM: 7163/2: PL330: Only register usable channels
  ARM: 7162/1: errata: tidy up Kconfig options for PL310 errata workarounds
  ARM: 7161/1: errata: no automatic store buffer drain
  ARM: perf: initialise used_mask for fake PMU during validation
  ARM: PMU: remove pmu_init declaration
  ARM: PMU: re-export release_pmu symbol to modules
2011-12-01 11:53:54 -08:00
Axel Lin
97371fa99c ARM: 7175/1: add subname parameter to mfp_set_groupg callers
commit 798681bf "ARM: 7158/1: add new MFP implement for NUC900"
adds subname parameter for mfp_set_groupg.

Thus add subname parameter to the callers.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Wan Zongshun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-11-26 21:58:54 +00:00
Shubhrajyoti D
eff245c82f i2c: Make i2cdev_notifier_call static
The function i2cdev_notifier_call is used only in i2c-dev file
making it static.
Also removes the following sparse warning

drivers/i2c/i2c-dev.c:582:5: warning: symbol 'i2cdev_notifier_call'
was not declared. Should it be static?

Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-11-23 11:33:07 +01:00
Jean Delvare
cbb4451404 i2c: Fix device name for 10-bit slave address
10-bit addresses overlap with traditional 7-bit addresses, leading in
device name collisions. Add an arbitrary offset to 10-bit addresses to
prevent this collision. The offset was chosen so that the address is
still easily recognizable.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-11-23 11:33:07 +01:00
Jeffrey (Sheng-Hui) Chu
cc6bcf7d2e i2c-algo-bit: Generate correct i2c address sequence for 10-bit target
The wrong bits were put on the wire, fix that.

This fixes kernel bug #42562.

Signed-off-by: Sheng-Hui J. Chu <jeffchu@broadcom.com>
Cc: stable@kernel.org
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-11-23 11:33:07 +01:00
Greg Kroah-Hartman
fe7484834b USB: convert some miscellanies drivers to use module_usb_driver()
This converts the remaining USB drivers in the kernel to use the
module_usb_driver() macro which makes the code smaller and a bit
simpler.

Added bonus is that it removes some unneeded kernel log messages about
drivers loading and/or unloading.

Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Till Harbaum <till@harbaum.org>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org>
Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Steve Glendinning <steve.glendinning@smsc.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jesper Juhl <jj@chaosbits.net>
Cc: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Cc: Jamie Iles <jamie@jamieiles.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-11-18 09:52:10 -08:00
Linus Torvalds
32aaeffbd4 Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
* 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits)
  Revert "tracing: Include module.h in define_trace.h"
  irq: don't put module.h into irq.h for tracking irqgen modules.
  bluetooth: macroize two small inlines to avoid module.h
  ip_vs.h: fix implicit use of module_get/module_put from module.h
  nf_conntrack.h: fix up fallout from implicit moduleparam.h presence
  include: replace linux/module.h with "struct module" wherever possible
  include: convert various register fcns to macros to avoid include chaining
  crypto.h: remove unused crypto_tfm_alg_modname() inline
  uwb.h: fix implicit use of asm/page.h for PAGE_SIZE
  pm_runtime.h: explicitly requires notifier.h
  linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h
  miscdevice.h: fix up implicit use of lists and types
  stop_machine.h: fix implicit use of smp.h for smp_processor_id
  of: fix implicit use of errno.h in include/linux/of.h
  of_platform.h: delete needless include <linux/module.h>
  acpi: remove module.h include from platform/aclinux.h
  miscdevice.h: delete unnecessary inclusion of module.h
  device_cgroup.h: delete needless include <linux/module.h>
  net: sch_generic remove redundant use of <linux/module.h>
  net: inet_timewait_sock doesnt need <linux/module.h>
  ...

Fix up trivial conflicts (other header files, and  removal of the ab3550 mfd driver) in
 - drivers/media/dvb/frontends/dibx000_common.c
 - drivers/media/video/{mt9m111.c,ov6650.c}
 - drivers/mfd/ab3550-core.c
 - include/linux/dmaengine.h
2011-11-06 19:44:47 -08:00
Linus Torvalds
d6748066ad Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (37 commits)
  MIPS: O32: Provide definition of registers ta0 .. ta3.
  MIPS: perf: Add Octeon support for hardware perf.
  MIPS: perf: Add support for 64-bit perf counters.
  MIPS: perf: Reorganize contents of perf support files.
  MIPS: perf: Cleanup formatting in arch/mips/kernel/perf_event.c
  MIPS: Add accessor macros for 64-bit performance counter registers.
  MIPS: Add probes for more Octeon II CPUs.
  MIPS: Add more CPU identifiers for Octeon II CPUs.
  MIPS: XLR, XLS: Add comment for smp setup
  MIPS: JZ4740: GPIO: Check correct IRQ in demux handler
  MIPS: JZ4740: GPIO: Simplify IRQ demuxer
  MIPS: JZ4740: Use generic irq chip
  MIPS: Alchemy: remove all CONFIG_SOC_AU1??? defines
  MIPS: Alchemy: kill au1xxx.h header
  MIPS: Alchemy: clean DMA code of CONFIG_SOC_AU1??? defines
  MIPS, IDE: Alchem, au1xxx-ide: Remove pb1200/db1200 header dep
  MIPS: Alchemy: Redo PCI as platform driver
  MIPS: Alchemy: more base address cleanup
  MIPS: Alchemy: rewrite USB platform setup.
  MIPS: Alchemy: abstract USB block control register access
  ...

Fix up trivial conflicts in:
	arch/mips/alchemy/devboards/db1x00/platform.c
	drivers/ide/Kconfig
	drivers/mmc/host/au1xmmc.c
	drivers/video/Kconfig
	sound/mips/Kconfig
2011-11-03 13:28:14 -07:00
Linus Torvalds
a0a4194c94 Merge branch 'for-next' of git://git.infradead.org/users/sameo/mfd-2.6
* 'for-next' of git://git.infradead.org/users/sameo/mfd-2.6: (80 commits)
  mfd: Fix missing abx500 header file updates
  mfd: Add missing <linux/io.h> include to intel_msic
  x86, mrst: add platform support for MSIC MFD driver
  mfd: Expose TurnOnStatus in ab8500 sysfs
  mfd: Remove support for early drop ab8500 chip
  mfd: Add support for ab8500 v3.3
  mfd: Add ab8500 interrupt disable hook
  mfd: Convert db8500-prcmu panic() into pr_crit()
  mfd: Refactor db8500-prcmu request_clock() function
  mfd: Rename db8500-prcmu init function
  mfd: Fix db5500-prcmu defines
  mfd: db8500-prcmu voltage domain consumers additions
  mfd: db8500-prcmu reset code retrieval
  mfd: db8500-prcmu tweak for modem wakeup
  mfd: Add db8500-pcmu watchdog accessor functions for watchdog
  mfd: hwacc power state db8500-prcmu accessor
  mfd: Add db8500-prcmu accessors for PLL and SGA clock
  mfd: Move to the new db500 PRCMU API
  mfd: Create a common interface for dbx500 PRCMU drivers
  mfd: Initialize DB8500 PRCMU regs
  ...

Fix up trivial conflicts in
	arch/arm/mach-imx/mach-mx31moboard.c
	arch/arm/mach-omap2/board-omap3beagle.c
	arch/arm/mach-u300/include/mach/irqs.h
	drivers/mfd/wm831x-spi.c
2011-11-03 09:40:51 -07:00
Linus Torvalds
b4beb4bf99 Merge branch 'for-linus/i2c-3.2' of git://git.fluff.org/bjdooks/linux
* 'for-linus/i2c-3.2' of git://git.fluff.org/bjdooks/linux: (47 commits)
  i2c-s3c2410: Add device tree support
  i2c-s3c2410: Keep a copy of platform data and use it
  i2c-nomadik: cosmetic coding style corrections
  i2c-au1550: dev_pm_ops conversion
  i2c-au1550: increase timeout waiting for master done
  i2c-au1550: remove unused ack_timeout
  i2c-au1550: remove usage of volatile keyword
  i2c-tegra: __iomem annotation fix
  i2c-eg20t: Add initialize processing in case i2c-error occurs
  i2c-eg20t: Fix flag setting issue
  i2c-eg20t: add stop sequence in case wait-event timeout occurs
  i2c-eg20t: Separate error processing
  i2c-eg20t: Fix 10bit access issue
  i2c-eg20t: Modify returned value s32 to long
  i2c-eg20t: Fix bus-idle waiting issue
  i2c-designware: Fix PCI core warning on suspend/resume
  i2c-designware: Add runtime power management support
  i2c-designware: Add support for Designware core behind PCI devices.
  i2c-designware: Push all register reads/writes into the core code.
  i2c-designware: Support multiple cores using same ISR
  ...
2011-11-01 15:07:19 -07:00
Ben Dooks
3945fe9314 Merge branches 'for-32/i2c/nomadik', 'for-32/i2c/s3c2410-dt' and 'for-32/i2c/tegra-iomem' into for-linus/i2c-3.2 2011-11-01 00:54:17 +00:00
Ben Dooks
be4af5dfa6 Merge branch 'for-32/i2c/irqflags' into for-linus/i2c-3.2
Conflicts:
	drivers/i2c/busses/i2c-designware-core.c

Fixed up merge conflic
2011-11-01 00:52:53 +00:00
Ben Dooks
ce0fda1608 Merge branches 'for-32/i2c/omap-v4', 'for-32/i2c/imx-dt', 'for-32/i2c/eg20t-v4', 'for-32/i2c/designware-v5' and 'for-32/i2c/au1550' into for-linus/i2c-3.2 2011-11-01 00:50:09 +00:00
Paul Gortmaker
93cf5d75b9 i2c: Add module.h to modular files prev. implicitly getting it
These files use interfaces from linux/module.h, so they must
include that file to avoid build errors when the implicit
presence of module.h is removed.

[with i2c-pxa-pci.c fix from Randy Dunlap <rdunlap@xenotime.net>]

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:29 -04:00
Paul Gortmaker
345df5126e i2c: add export.h to i2c-boardinfo.c for EXPORT_SYMBOL
With module.h being implicitly everywhere via device.h, the absence
of explicitly including something for EXPORT_SYMBOL went unnoticed.
Since we are heading to fix things up and clean module.h from the
device.h file, we need to explicitly include these files now.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:29 -04:00
Jean Delvare
4403988afc i2c-algo-pca: Return standard fault codes
Adjust i2c-algo-pca to return fault codes compliant with
Documentation/i2c/fault-codes, rather than the undocumented and
vague -EREMOTEIO.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Wolfram Sang <w.sang@pengutronix.de>
2011-10-30 13:47:25 +01:00
Jean Delvare
abc01b2718 i2c-algo-bit: Return standard fault codes
Adjust i2c-algo-bit to return fault codes compliant with
Documentation/i2c/fault-codes, rather than the undocumented and
vague -EREMOTEIO.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-10-30 13:47:25 +01:00
Jean Delvare
f6beb67d8e i2c-algo-bit: Be verbose on bus testing failure
If bus testing fails due to the bus being seen as busy, it might be
helpful for developers to know which line is unexpectedly low.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
2011-10-30 13:47:25 +01:00
Jean Delvare
1bddab7f7d i2c-algo-bit: Let user test buses without failing
Always failing to register I2C buses when the line testing fails is a
little harsh. While such a failure is definitely a bug in the driver
that exposes the affected I2C bus, things may still work fine if the
missing initialization steps are done later, before the I2C bus is
used. So it seems a better debugging tool to just report the test
failure by default. I introduce bit_test=2 if anyone really misses the
original behavior of bit_test=1.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
2011-10-30 13:47:25 +01:00
Harvey Yang
6fcf84a2c0 i2c/scx200_acb: Fix section mismatch warning in scx200_pci_drv
WARNING: drivers/i2c/busses/built-in.o(.data+0x47c8): Section mismatch in reference from the variable scx200_pci_drv to the function .devinit.text:scx200_probe()
The variable scx200_pci_drv references
the function __devinit scx200_probe()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console

Signed-off-by: Harvey Yang <harvey.huawei.yang@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-10-30 13:47:25 +01:00
Geert Uytterhoeven
9519282a02 i2c: I2C_ELEKTOR should depend on HAS_IOPORT
On m68k, I get:

drivers/i2c/busses/i2c-elektor.c: In function ‘pcf_isa_init’:
drivers/i2c/busses/i2c-elektor.c:153: error: implicit declaration of function ‘ioport_map’
drivers/i2c/busses/i2c-elektor.c:153: warning: assignment makes pointer from integer without a cast
drivers/i2c/busses/i2c-elektor.c: In function ‘elektor_probe’:
drivers/i2c/busses/i2c-elektor.c:287: error: implicit declaration of function ‘ioport_unmap’

Since commit 82ed223c26 ("iomap: make IOPORT/PCI
mapping functions conditional"), ioport_map() is only available on platforms
that set HAS_IOPORT.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-10-30 13:47:24 +01:00
Thomas Abraham
5a5f50802f i2c-s3c2410: Add device tree support
Add device tree probe support for Samsung's s3c2410 i2c driver.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29 11:21:22 +01:00
Thomas Abraham
4fd81eb2d6 i2c-s3c2410: Keep a copy of platform data and use it
The platform data is copied into driver's private data and the copy is
used for all access to the platform data. This simpifies the addition
of device tree support for the i2c-s3c2410 driver.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29 11:21:16 +01:00
Jonas Aaberg
8abf6fbbd2 i2c-nomadik: cosmetic coding style corrections
This fixes a number of whitespace and punctuation problems
around the Nomadik I2C driver.

Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29 11:20:28 +01:00
Manuel Lauss
46f344e2a0 i2c-au1550: dev_pm_ops conversion
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>
2011-10-29 11:14:28 +01:00
Manuel Lauss
84785f120f i2c-au1550: increase timeout waiting for master done
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>
2011-10-29 11:14:23 +01:00
Manuel Lauss
85ea256988 i2c-au1550: remove unused ack_timeout
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>
2011-10-29 11:14:17 +01:00
Manuel Lauss
c5de6467d2 i2c-au1550: remove usage of volatile keyword
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>
2011-10-29 11:14:09 +01:00
Olof Johansson
f533c61e19 i2c-tegra: __iomem annotation fix
drivers/i2c/busses/i2c-tegra.c:585:7: warning: incorrect type in assignment (different address spaces)
drivers/i2c/busses/i2c-tegra.c:585:7:    expected void *base
drivers/i2c/busses/i2c-tegra.c:585:7:    got void [noderef] <asn:2>*
drivers/i2c/busses/i2c-tegra.c:619:16: warning: incorrect type in assignment (different address spaces)
drivers/i2c/busses/i2c-tegra.c:619:16:    expected void [noderef] <asn:2>*base
drivers/i2c/busses/i2c-tegra.c:619:16:    got void *base
drivers/i2c/busses/i2c-tegra.c:689:10: warning: incorrect type in argument 1 (different address spaces)
drivers/i2c/busses/i2c-tegra.c:689:10:    expected void volatile [noderef] <asn:2>*addr
drivers/i2c/busses/i2c-tegra.c:689:10:    got void *base

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by; Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29 11:11:23 +01:00
Tomoya MORINAGA
24597bf801 i2c-eg20t: Add initialize processing in case i2c-error occurs
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>
2011-10-29 11:09:33 +01:00
Tomoya MORINAGA
cb59f5253a i2c-eg20t: Fix flag setting issue
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>
2011-10-29 11:09:33 +01:00
Tomoya MORINAGA
3cf21a7c48 i2c-eg20t: add stop sequence in case wait-event timeout occurs
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>
2011-10-29 11:09:33 +01:00
Tomoya MORINAGA
12bd314651 i2c-eg20t: Separate error processing
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>
2011-10-29 11:09:33 +01:00
Tomoya MORINAGA
c249ac207f i2c-eg20t: Fix 10bit access issue
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>
2011-10-29 11:09:33 +01:00
Tomoya MORINAGA
c7b41f3aff i2c-eg20t: Modify returned value s32 to long
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>
2011-10-29 11:09:33 +01:00
Tomoya MORINAGA
93e4ad74da i2c-eg20t: Fix bus-idle waiting issue
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>
2011-10-29 11:09:32 +01:00
Octavian Purdila
52c2843322 i2c-designware: Fix PCI core warning on suspend/resume
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>
2011-10-29 11:03:53 +01:00
Dirk Brandewie
18dbdda89f i2c-designware: Add runtime power management support
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>
2011-10-29 11:03:53 +01:00
Dirk Brandewie
fe20ff5c7e i2c-designware: Add support for Designware core behind PCI devices.
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29 11:03:52 +01:00
Dirk Brandewie
f3fa9f3da5 i2c-designware: Push all register reads/writes into the core code.
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>
2011-10-29 11:03:51 +01:00
Dirk Brandewie
af06cf6c8c i2c-designware: Support multiple cores using same ISR
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>
2011-10-29 11:03:51 +01:00
Dirk Brandewie
e18563fc56 i2c-designware: move controller config to bus specific portion of driver
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>
2011-10-29 11:03:50 +01:00
Dirk Brandewie
2fa8326b4b i2c-designware: move i2c functionality bit field to be adapter specific
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>
2011-10-29 11:03:50 +01:00
Dirk Brandewie
1d31b58f64 i2c-designware: Move retriveving the clock speed out of core code.
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>
2011-10-29 11:03:49 +01:00
Dirk Brandewie
2373f6b974 i2c-designware: split of i2c-designware.c into core and bus specific parts
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>
2011-10-29 11:03:39 +01:00
Dirk Brandewie
4a423a8c81 i2c-designware: Move checking of IP core version to i2c_dw_init()
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>
2011-10-29 11:00:52 +01:00
Jean-Hugues Deschenes
18c4089e6c i2c-designware: Allow mixed endianness accesses
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>
2011-10-29 11:00:51 +01:00
Jean-Hugues Deschenes
4ff895bc8b i2c-designware: Check component type register
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>
2011-10-29 11:00:51 +01:00
Jean-Hugues Deschenes
7f279601c5 i2c-designware: Use local version of readl & writel
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>
2011-10-29 11:00:50 +01:00
Yong Zhang
4311051c35 i2c: irq: Remove IRQF_DISABLED
Since commit [c58543c8: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).

So now this flag is a NOOP and can be removed.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Barry Song <21cnbao@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-10-29 09:55:45 +01:00
Kevin Hilman
fab67afb54 I2C: OMAP: remove dev->idle, use usage counting provided by runtime PM
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>
2011-10-29 09:37:09 +01:00
Kevin Hilman
7f4b08eeee I2C: OMAP: remove unneccesary use of pdev
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>
2011-10-29 09:37:09 +01:00
Shubhrajyoti D
cb28e58235 OMAP4: I2C: Enable the wakeup in I2C_WE
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>
2011-10-29 09:37:09 +01:00
Andy Green
9550d4d7ab I2C: OMAP1/OMAP2+: prepend I2C IP version to probed version shown in dev_info
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>
2011-10-29 09:37:08 +01:00
Andy Green
3be0053ee1 I2C: OMAP2+: Convert omap I2C driver to use feature implementation flags 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>
2011-10-29 09:37:08 +01:00
Andy Green
4e80f727bf I2C: OMAP2+: address confused probed version naming
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>
2011-10-29 09:37:08 +01:00
Andy Green
6314f09e95 I2C: OMAP2+: Solve array bounds overflow error on i2c idle
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>
2011-10-29 09:37:08 +01:00
Andy Green
a129557777 I2C: OMAP2+: use platform_data ip revision to select register map
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>
2011-10-29 09:37:07 +01:00
Andy Green
b885308841 I2C: OMAP2+: Name registers in I2C IP V2 only accordingly
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>
2011-10-29 09:37:07 +01:00
Linus Torvalds
ca90666287 Merge branch 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (43 commits)
  ARM: 7135/1: ep93xx: bring back missing <mach/gpio.h>
  ARM: 7104/1: plat-pxa: break out GPIO driver specifics
  ARM: 7103/1: plat-pxa: move PXA GPIO driver to GPIO subsystem
  ARM: 7042/3: mach-ep93xx: break out GPIO driver specifics
  ARM: 7101/1: arm/tegra: Replace <mach/gpio.h> with <mach/gpio-tegra.h>
  ARM: 7094/1: arm/tegra: Move EN_VDD_1V05_GPIO to board-harmony.h
  ARM: 7083/1: rewrite U300 GPIO to use gpiolib
  ARM: 7074/1: gpio: davinci: eliminate unused variable warnings
  ARM: 7063/1: Orion: gpio: add missing include of linux/types.h
  ARM: 7055/1: arm/tegra: mach/gpio.h: include linux/types.h to fix build
  ARM: 7054/1: arm/tegra: Delete custom gpio_to_irq, and irq_to_gpio
  ARM: 7053/1: gpio/tegra: Implement gpio_chip.to_irq
  ARM: 7052/1: gpio/tegra: Remove use of irq_to_gpio
  ARM: 7057/1: mach-pnx4008: rename GPIO header
  ARM: 7056/1: plat-nomadik: kill off <plat/gpio.h>
  ARM: 7050/1: mach-sa1100: delete irq_to_gpio() function
  ARM: 7049/1: mach-sa1100: move SA1100 GPIO driver to GPIO subsystem
  ARM: 7045/1: mach-lpc32xx: break out GPIO driver specifics
  ARM: 7044/1: mach-lpc32xx: move LPC32XX GPIO driver to GPIO subsystem
  ARM: 7043/1: mach-ixp2000: rename GPIO header
  ...

Fix up trivial conflicts in arch/arm/mach-u300/Kconfig manually
2011-10-27 08:39:10 +02:00
Manuel Lauss
3766386037 MIPS: Alchemy: remove all CONFIG_SOC_AU1??? defines
Now that no driver any longer depends on the CONFIG_SOC_AU1???  symbols,
it's time to get rid of them: Move some of the platform devices to the
boards which can use them, Rename a few (unused) constants in the header,
Replace them with MIPS_ALCHEMY in the various Kconfig files.  Finally
delete them altogether from the Alchemy Kconfig file.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2707/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-10-24 23:34:24 +01:00
Manuel Lauss
50d5676eba MIPS: Alchemy: kill au1xxx.h header
No longer required

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2705/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 delete mode 100644 arch/mips/include/asm/mach-au1x00/au1xxx.h
2011-10-24 23:34:24 +01:00
Arnd Bergmann
8a0a8e8e42 mfd: remove CONFIG_MFD_SUPPORT
We currently have two symbols to control compilation the MFD subsystem,
MFD_SUPPORT and MFD_CORE. The MFD_SUPPORT is actually not required
at all, it only hides the submenu when not set, with the effect that
Kconfig warns about missing dependencies when another driver selects
an MFD driver while MFD_SUPPORT is disabled. Turning the MFD submenu
back from menuconfig into a plain menu simplifies the Kconfig syntax
for those kinds of users and avoids the surprise when the menu
suddenly appears because another driver was enabled that selects this
symbol.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2011-10-24 14:09:13 +02:00
Jiri Kosina
e060c38434 Merge branch 'master' into for-next
Fast-forward merge with Linus to be able to merge patches
based on more recent version of the tree.
2011-09-15 15:08:18 +02:00
Justin P. Mattock
699324871f treewide: remove extra semicolons from various parts of the kernel
This is a resend from the original, changing the title from PATCH to
RFC(since this is a review for commit, and I should have put that the first go around).
and also removing some of the commit's with ia64 and bash since it is significant.
let me know if I might have missed anything etc..

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-09-15 14:50:49 +02:00
Shawn Guo
dfcd04b19d i2c-imx: add device tree probe support
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>
2011-09-14 22:16:14 +01:00
Shawn Guo
593702c71a i2c-imx: remove init/exit hooks from platform data
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>
2011-09-14 22:14:41 +01:00
Doug Anderson
96219c3a25 i2c-tegra: fix possible race condition after tx
In tegra_i2c_fill_tx_fifo, once we have finished pushing all the bytes
to the I2C hardware controller, the interrupt might happen before we
have updated i2c_dev->msg_buf_remaining at the end of the function.
Then, in tegra_i2c_isr, we will call again tegra_i2c_fill_tx_fifo
triggering weird behaviour. This has been shown to happen under real
conditions.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-09-07 00:13:40 +01:00
Mike Rapoport
048e29cff9 i2c-tegra: add I2C_FUNC_SMBUS_EMUL
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-09-07 00:13:34 +01:00
John Bonesio
406bd18a7a i2c-tegra: Add of_match_table
This patch was intended to be part of 7ca2d1a105a239e300b937e9c41a10a4bd08f569
"i2c: Tegra: Add DeviceTree support". However, an early version of that patch,
which was missing a chunk, was applied to next-i2c. This change is that
missing chunk.

Signed-off-by: John Bonesio <bones@secretlab.ca>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-09-07 00:11:46 +01:00
Axel Lin
7a703aded9 i2c-pxa2xx: return proper error code in ce4100_i2c_probe error paths
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-09-07 00:09:12 +01:00
Linus Walleij
c8d47631a4 i2c-nomadik: fix kerneldoc warning
There was a missing struct item in the kerneldoc, add it and fix
another pretty-printing formatting issue with a missing space.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-08-24 23:28:49 +01:00
Kevin Hilman
584b408d37 Revert "i2c-omap: fix static suspend vs. runtime suspend"
This reverts commit adf6e07922.

Remove system PM methods which can race with runtime PM methods.

Also, as of v3.1, the PM domain level code for OMAP handles device
power state transistions automatically for devices, so drivers no
longer need to specifically call the bus/pm_domain methods themselves.

Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-08-23 20:19:16 +01:00
srinidhi kasagar
4b723a4710 i2c-nomadik: Do not use _interruptible_ variant call
If there is a signal pending and wait_for_completion_interruptible_timeout
exited because of the -ERESTARTSYS error we are unable to send any more
i2c messages.

So, deprecate this _interruptible_ variant call.

Signed-off-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-08-23 20:13:39 +01:00
Linus Walleij
87f911a38d ARM: 7043/1: mach-ixp2000: rename GPIO header
The ixp2000 abuses the <mach/gpio.h> namespace by not implementing
any generic GPIO nor gpiolib functions in it - just custom GPIO.
Rename the header to <mach/gpio-ixp2000.h> for clarity.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-22 09:13:21 +01:00
Russell King
cb04941905 ARM: gpio: ixp2000: convert drivers to use asm/gpio.h rather than mach/gpio.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-08 14:28:03 +01:00
Tomoya MORINAGA
07e729ce89 i2c-eg20t : Fix the issue of Combined R/W transfer mode
issue-1
In case combined transfer mode fails halfway, the processing must be stopped halfway.
However currently, the processing is continued.
This patch breaks the processing.

issue-2
Currently, pch_i2c_xfer returns read/write size at that time.
However pch_i2c_xfer must return the number of messages to be read/written.
This patch modifies correctly.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-07-27 00:02:28 +01:00
Tomoya MORINAGA
7a9c42ccc9 i2c-eg20t : Support Combined R/W transfer mode
Currently, Combined R/W transfer mode is not supported.
This patch enables Combined R/W transfer mode.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-07-27 00:02:28 +01:00
John Bonesio
5c470f39ee i2c: Tegra: Add DeviceTree support
This patch modifies the tegra i2c driver so that it can be initiailized
using the device tree along with the devices connected to the i2c bus.

Signed-off-by: John Bonesio <bones@secretlab.ca>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: OIof Johansson <olof@lixom.net>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-07-27 00:02:28 +01:00
Linus Torvalds
d3ec4844d4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits)
  fs: Merge split strings
  treewide: fix potentially dangerous trailing ';' in #defined values/expressions
  uwb: Fix misspelling of neighbourhood in comment
  net, netfilter: Remove redundant goto in ebt_ulog_packet
  trivial: don't touch files that are removed in the staging tree
  lib/vsprintf: replace link to Draft by final RFC number
  doc: Kconfig: `to be' -> `be'
  doc: Kconfig: Typo: square -> squared
  doc: Konfig: Documentation/power/{pm => apm-acpi}.txt
  drivers/net: static should be at beginning of declaration
  drivers/media: static should be at beginning of declaration
  drivers/i2c: static should be at beginning of declaration
  XTENSA: static should be at beginning of declaration
  SH: static should be at beginning of declaration
  MIPS: static should be at beginning of declaration
  ARM: static should be at beginning of declaration
  rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check
  Update my e-mail address
  PCIe ASPM: forcedly -> forcibly
  gma500: push through device driver tree
  ...

Fix up trivial conflicts:
 - arch/arm/mach-ep93xx/dma-m2p.c (deleted)
 - drivers/gpio/gpio-ep93xx.c (renamed and context nearby)
 - drivers/net/r8169.c (just context changes)
2011-07-25 13:56:39 -07:00
Grant Likely
488bf314bf i2c: Allow i2c_add_numbered_adapter() to assign a bus id
Currently, if an i2c bus driver supports both static and dynamic bus
ids, it needs to choose between calling i2c_add_numbered_adapter() and
i2c_add_adapter().  This patch makes i2c_add_numbered_adapter()
redirect to i2c_add_adapter() if the requested bus id is -1.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-07-25 17:49:43 +02:00
LABBE Corentin
3fea5df41d i2c-ali1535: Fix style issues
This is a fix-style patch for i2c-ali1535 (issues reported by
checkpatch.pl.)

Signed-off-by: LABBE Corentin <corentin.labbe@geomatys.fr>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-07-25 17:49:42 +02:00
Michael Witten
622e040d57 doc: Kconfig: Typo: square -> squared
Signed-off-by: Michael Witten <mfwitten@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-07-11 14:22:32 +02:00
Jiri Kosina
b7e9c223be Merge branch 'master' into for-next
Sync with Linus' tree to be able to apply pending patches that
are based on newer code already present upstream.
2011-07-11 14:15:55 +02:00
Jesper Juhl
32575a9183 drivers/i2c: static should be at beginning of declaration
Make sure that the 'static' keywork is at the beginning of declaration
for drivers/i2c/busses/i2c-omap.c

This gets rid of warnings like
  warning: ‘static’ is not at beginning of declaration
when building with -Wold-style-declaration (and/or -Wextra which also
enables it).

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-07-11 14:13:47 +02:00
Linus Torvalds
f1bb20a836 Merge branch 'for-30-rc5/all-i2c' of git://git.fluff.org/bjdooks/linux
* 'for-30-rc5/all-i2c' of git://git.fluff.org/bjdooks/linux:
  i2c-bfin-twi: abort transfer is MEM bit is reset unexpectedly
  i2c-s3c2410: Remove useless break code
  i2c-s3c2410: Fix typo 'i2s' -> 'i2c'
  i2c: tegra: Assign unused slave address
2011-07-07 16:29:29 -07:00
Petri Gynther
cd823db8b1 i2c/pca954x: Initialize the mux to disconnected state
pca954x power-on default is channel 0 connected. If multiple pca954x
muxes are connected to the same physical I2C bus, the parent bus will
see channel 0 devices behind both muxes by default. This is bad.

Scenario:
            -- pca954x @ 0x70 -- ch 0 (I2C-bus-101) -- EEPROM @ 0x50
            |
I2C-bus-1 ---
            |
            -- pca954x @ 0x71 -- ch 0 (I2C-bus-111) -- EEPROM @ 0x50

1. Load I2C bus driver: creates I2C-bus-1
2. Load pca954x driver: creates virtual I2C-bus-101 and I2C-bus-111
3. Load eeprom driver
4. Try to read EEPROM @ 0x50 on I2C-bus-101. The transaction will also bleed
   onto I2C-bus-111 because pca954x @ 0x71 channel 0 is connected by default.

Fix: Initialize pca954x to disconnected state in pca954x_probe()

Signed-off-by: Petri Gynther <pgynther@google.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org
2011-06-29 11:36:11 +02:00
Jean Delvare
9b640f2e15 i2c-taos-evm: Fix log messages
* Print all error and information messages even when debugging is
  disabled.
* Don't use adapter device to log messages before it is ready.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org
2011-06-29 11:36:10 +02:00
Ben Dooks
69f81e8654 Merge branches 'for-30-rc4/i2c-bfin', 'for-30-rc4/i2c-omap', 'for-30-rc4/i2c-s3c' and 'for-30-rc4/i2c-tegra' into for-30-rc5/all-i2c 2011-06-27 23:07:24 +01:00
Sonic Zhang
4a65163e3b i2c-bfin-twi: abort transfer is MEM bit is reset unexpectedly
Sometimes, the first I2C transmit interrupt is not serviced in time (like
when higher priority interrupts take too long).  Since the RESTART bit is
not set before the next I2C clock, when the TWI handler is finally called,
the I2C session is aborted (MEM bit is reset) and both SMITSERV and MCOMP
int status bits are set.

So when this happens, abort the transfer.

Reported-by: Isabelle Leonardi <i.leonardi@detracom.fr>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-06-27 23:06:48 +01:00
Jonghwan Choi
b90ea76542 i2c-s3c2410: Remove useless break code
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-06-27 23:06:05 +01:00
Huisung Kang
19820510c5 i2c-s3c2410: Fix typo 'i2s' -> 'i2c'
Signed-off-by: Huisung Kang <hs1218.kang@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-06-27 23:05:56 +01:00
Stephen Warren
5afa9d3578 i2c: tegra: Assign unused slave address
On Tegra, we should always use the "new" I2C slave controller, to avoid
issues with the old controller. This was implemented in commit 65a1a0a
"i2c: tegra: Enable new slave mode."

There is currently no driver for the Tegra I2C slave controller upstream.
Additionally, the controller cannot be completely disabled. Instead, we
need to:

a) Set I2C_SL_CNFG_NACK to make the controller automatically NACK any
incoming transactions.

b) The controller's definition of NACK isn't identical to the I2C
protocol's definition. Specifically, it will perform a standard NACK, but
*also* continue to hold the clock line low in expectation of receiving
more data. This can hang the bus, or at least cause transaction timeouts,
if something starts a transaction that matches the controller's slave
address. Since the default address is 0x00, the general call address,
this does occur in practice.

To avoid this, we explicitly program a slave address that is reserved for
future expansion. For current boards, this guarantees the address will
never be used. If a future board ever needs to use this address, we can
add platform data to determine a board-specific safe address. 0xfc is
picked by this patch.

This patch is based on a change previously posted by: Wei Ni <wni@nvidia.com>
http://www.spinics.net/lists/linux-i2c/msg05437.html
In turned based on internal changes by: Bharat Nihalani <bnihalani@nvidia.com>

A semantically equivalent change has been contained in the various
ChromeOS kernels for a while.

I tested this change on top of 3.0-rc2 on Harmony, and interacted with
the WM8903 I2C-based audio codec.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-06-27 23:03:42 +01:00
Joe Perches
7c9d440e90 treewide: transciever/transceiver spelling fixes
Just tyops.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-06-24 11:20:14 +02:00
Samuel Ortiz
3271d382c3 mfd: Use mfd cell platform_data for timberdale cells platform bits
With the addition of a device platform mfd_cell pointer, MFD drivers
can go back to passing platform data back to their sub drivers.
This allows for an mfd_cell->mfd_data removal and thus keep the
sub drivers MFD agnostic. This is mostly needed for non MFD aware
sub drivers.

Acked-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-05-26 19:45:05 +02:00
Linus Torvalds
4a7df24ddc Merge branch 'for-linus/2640/i2c' of git://git.fluff.org/bjdooks/linux
* 'for-linus/2640/i2c' of git://git.fluff.org/bjdooks/linux: (21 commits)
  mach-ux500: set proper I2C platform data from MOP500s
  i2c-nomadik: break out single messsage transmission
  i2c-nomadik: reset the hw after status check
  i2c-nomadik: remove the unnecessary delay
  i2c-nomadik: change the TX and RX threshold
  i2c-nomadik: add code to retry on timeout failure
  i2c-nomadik: use pm_runtime API
  i2c-nomadik: print abort cause only on abort tag
  i2c-nomadik: correct adapter timeout initialization
  i2c-nomadik: remove the redundant error message
  i2c-nomadik: corrrect returned error numbers
  i2c-nomadik: fix speed enumerator
  i2c-nomadik: make i2c timeout specific per i2c bus
  i2c-nomadik: add regulator support
  i2c: i2c-sh_mobile bus speed platform data V2
  i2c: i2c-sh_mobile clock string removal
  i2c-eg20t: Support new device ML7223 IOH
  i2c: tegra: Add de-bounce cycles.
  i2c: tegra: fix repeated start handling
  i2c: tegra: recover from spurious interrupt storm
  ...
2011-05-24 16:39:23 -07:00
Ben Dooks
5bdfdfeed5 Merge branches 'for-2639/i2c-eg20t', 'for-2639/i2c-shmobile', 'for-2639/i2c-tegra' and 'for-2639/i2c-nomadik2' into for-linus/2640/i2c 2011-05-25 00:25:55 +01:00
Linus Walleij
82a4413450 i2c-nomadik: break out single messsage transmission
Reduce code size in the message transfer function by factoring out
a single-message transfer function.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:20:58 +01:00
Virupax Sadashivpetimath
0511f643cb i2c-nomadik: reset the hw after status check
In case of I2C timeout, reset the HW only after the HW status
is read, otherwise the staus will be lost.

Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:20:54 +01:00
Virupax Sadashivpetimath
b5e890f7e7 i2c-nomadik: remove the unnecessary delay
The delay in the driver seems to be not needed, so remove it.

Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Markus Grape <markus.grape@stericsson.com>
Tested-by: Per Persson <per.xb.persson@stericsson.com>
Tested-by: Chethan Krishna N <chethan.krishna@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:20:50 +01:00
Virupax Sadashivpetimath
553553413a i2c-nomadik: change the TX and RX threshold
1) Increase RX FIFO threshold so that there is a reduction in
the number of interrupts handled to complete a transaction.

2) Fill TX FIFO in the write function.

Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:20:47 +01:00
Virupax Sadashivpetimath
ebd10e0783 i2c-nomadik: add code to retry on timeout failure
It is seen that i2c-nomadik controller randomly stops generating the
interrupts leading to a i2c timeout. As a workaround to this problem,
add retries to the on going transfer on failure.

Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:20:43 +01:00
Rabin Vincent
b0e751a925 i2c-nomadik: use pm_runtime API
Use the pm_runtime API for pins control.

Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
[deleted some surplus runtime PM code]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:20:39 +01:00
Virupax Sadashivpetimath
4cb3f538cd i2c-nomadik: print abort cause only on abort tag
Modify the code to:
1)Print the cause of i2c failure only if the status is set to ABORT.
2)Print slave address on send/receive fail, will help in which slave
failed.

Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:20:36 +01:00
Virupax Sadashivpetimath
cd20e4fa91 i2c-nomadik: correct adapter timeout initialization
Correct the incorrect initialization of adapter timeout not to be
in milliseconds, as it needs to be done in jiffies.

Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:20:33 +01:00
srinidhi kasagar
c436f92a46 i2c-nomadik: remove the redundant error message
The abort cause string itself is an error, so remove the redundant
explicit error message.

Signed-off-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:20:29 +01:00
Virupax Sadashivpetimath
99381bec0a i2c-nomadik: corrrect returned error numbers
The code was returning bad error numbers or just -1 in some cases.

Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:20:26 +01:00
Virupax Sadashivpetimath
9772760079 i2c-nomadik: make i2c timeout specific per i2c bus
Add option to have different i2c timeout delay for different i2c buses
specified in platform data. Default to the old value unless specified.

Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:20:13 +01:00
Jonas Aberg
a20d23945f i2c-nomadik: add regulator support
This on-chip I2C controller needs to fetch the regulator
representing its voltage domain so that it won't be switched off.

Signed-off-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25 00:16:58 +01:00
Jean Delvare
07da0372dd i2c-parport: Various cleanups
* Fix white space.
* Rename labels to something meaningful.
* Prefix defines with PORT_ to avoid collision with macros from
  <linux/parport.h>.
* Add const markers where possible.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-05-24 20:58:49 +02:00
Jean Delvare
8eacfcebf0 i2c-i801: Don't depend on other kernel driver config options
Don't let other driver config options influence us, as it makes the
code more complex and fragile for a small benefit. There's nothing
wrong with instantiating I2C devices even if they don't have a driver.
And we're talking about 835 extra bytes in the binary on x86-64,
that's hardly worth arguing about.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: David Woodhouse <david.woodhouse@intel.com>
Cc: Hans de Goede <hdegoede@redhat.com>
2011-05-24 20:58:49 +02:00
Jean Delvare
6aa1464d54 i2c-i801: Check for vendor Fujitsu before probing for apanel
Scanning the BIOS memory for the apanel information is costly, so
avoid doing it on non-Fujitsu machines.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-05-24 20:58:49 +02:00
Jean Delvare
e7198fbf50 i2c-i801: Don't probe for slaves on IDF channels
I don't know if Fujitsu is ever going to produce Patsburg-based
machines, but if they do, I'd rather not probe the secondary (IDF)
SMBus channels. At least not until we have a good reason for doing so.

On a side note, I'm not even sure if it is right to enable detection
of HWMON and DDC devices on the IDF channels. Time will tell...

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-24 20:58:49 +02:00
Seth Heasley
6e2a851e71 i2c-i801: SMBus patch for Intel Panther Point DeviceIDs
This patch adds the SMBus controller DeviceID for the Intel Panther Point PCH.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-05-24 20:58:49 +02:00
Linus Torvalds
d762f43831 Merge branch 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (23 commits)
  sh: Ignore R_SH_NONE module relocations.
  SH: SE7751: Fix pcibios_map_platform_irq prototype.
  sh: remove warning and warning_symbol from struct stacktrace_ops
  sh: wire up sys_sendmmsg.
  clocksource: sh_tmu: Runtime PM support
  clocksource: sh_tmu: __clocksource_updatefreq_hz() update
  clocksource: sh_cmt: Runtime PM support
  clocksource: sh_cmt: __clocksource_updatefreq_hz() update
  dmaengine: shdma: synchronize RCU before freeing, simplify spinlock
  dmaengine: shdma: add runtime- and system-level power management
  dmaengine: shdma: fix locking
  sh: sh-sci: sh7377 and sh73a0 build fixes
  sh: cosmetic improvement: use an existing pointer
  serial: sh-sci: suspend/resume wakeup support V2
  serial: sh-sci: Runtime PM support
  sh: select IRQ_FORCED_THREADING.
  sh: intc: Set virtual IRQs as nothread.
  sh: fixup fpu.o compile order
  i2c: add a module alias to the sh-mobile driver
  ALSA: add a module alias to the FSI driver
  ...
2011-05-23 21:24:07 -07:00
Linus Torvalds
5e152b4c9e Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (27 commits)
  PCI: Don't use dmi_name_in_vendors in quirk
  PCI: remove unused AER functions
  PCI/sysfs: move bus cpuaffinity to class dev_attrs
  PCI: add rescan to /sys/.../pci_bus/.../
  PCI: update bridge resources to get more big ranges when allocating space (again)
  KVM: Use pci_store/load_saved_state() around VM device usage
  PCI: Add interfaces to store and load the device saved state
  PCI: Track the size of each saved capability data area
  PCI/e1000e: Add and use pci_disable_link_state_locked()
  x86/PCI: derive pcibios_last_bus from ACPI MCFG
  PCI: add latency tolerance reporting enable/disable support
  PCI: add OBFF enable/disable support
  PCI: add ID-based ordering enable/disable support
  PCI hotplug: acpiphp: assume device is in state D0 after powering on a slot.
  PCI: Set PCIE maxpayload for card during hotplug insertion
  PCI/ACPI: Report _OSC control mask returned on failure to get control
  x86/PCI: irq and pci_ids patch for Intel Panther Point DeviceIDs
  PCI: handle positive error codes
  PCI: check pci_vpd_pci22_wait() return
  PCI: Use ICH6_GPIO_EN in ich6_lpc_acpi_gpio
  ...

Fix up trivial conflicts in include/linux/pci_ids.h: commit a6e5e2be44
moved the intel SMBUS ID definitons to the i2c-i801.c driver.
2011-05-23 15:39:34 -07:00
Linus Torvalds
57d19e80f4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
  b43: fix comment typo reqest -> request
  Haavard Skinnemoen has left Atmel
  cris: typo in mach-fs Makefile
  Kconfig: fix copy/paste-ism for dell-wmi-aio driver
  doc: timers-howto: fix a typo ("unsgined")
  perf: Only include annotate.h once in tools/perf/util/ui/browsers/annotate.c
  md, raid5: Fix spelling error in comment ('Ofcourse' --> 'Of course').
  treewide: fix a few typos in comments
  regulator: change debug statement be consistent with the style of the rest
  Revert "arm: mach-u300/gpio: Fix mem_region resource size miscalculations"
  audit: acquire creds selectively to reduce atomic op overhead
  rtlwifi: don't touch with treewide double semicolon removal
  treewide: cleanup continuations and remove logging message whitespace
  ath9k_hw: don't touch with treewide double semicolon removal
  include/linux/leds-regulator.h: fix syntax in example code
  tty: fix typo in descripton of tty_termios_encode_baud_rate
  xtensa: remove obsolete BKL kernel option from defconfig
  m68k: fix comment typo 'occcured'
  arch:Kconfig.locks Remove unused config option.
  treewide: remove extra semicolons
  ...
2011-05-23 09:12:26 -07:00
Paul Mundt
8ace5c4698 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into sh-latest 2011-05-23 11:35:33 +09:00
Jean Delvare
e05503ef11 Haavard Skinnemoen has left Atmel
Haavard's e-mail address at Atmel is no longer valid.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Havard Skinnemoen <hskinnemoen@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-05-18 23:24:50 +02:00
Grant Likely
b1608d69cb drivercore: revert addition of of_match to struct device
Commit b826291c, "drivercore/dt: add a match table pointer to struct
device" added an of_match pointer to struct device to cache the
of_match_table entry discovered at driver match time.  This was unsafe
because matching is not an atomic operation with probing a driver.  If
two or more drivers are attempted to be matched to a driver at the
same time, then the cached matching entry pointer could get
overwritten.

This patch reverts the of_match cache pointer and reworks all users to
call of_match_device() directly instead.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-05-18 12:32:23 -06:00
Wolfram Sang
9ddabb055d i2c: pnx: Fix crash due to wrong init of timer->data
alg_data is already a pointer which must be passed directly.

Reported-by: Dieter Ripp <ripp@systecnet.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Ben Dooks <ben-i2c@fluff.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-13 00:10:36 +01:00
Magnus Damm
81f8115305 i2c: i2c-sh_mobile bus speed platform data V2
Add support to the i2c-sh_mobile driver for setting
the I2C bus speed using platform data.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-11 07:08:13 +01:00
Magnus Damm
1082d5d29d i2c: i2c-sh_mobile clock string removal
Remove the clock string magic from the i2c-sh_mobile driver
now when all platforms support clkdev properly.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-11 07:08:13 +01:00