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: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>

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: NZhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: NXiangzhen Ye <Xiangzhen.Ye@csr.com>
Signed-off-by: NYuping Luo <Yuping.Luo@csr.com>
Signed-off-by: NBarry Song <Baohua.Song@csr.com>
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>

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: NAlok Chauhan <alokc@nvidia.com>
[swarren: Reworded commit description]
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>

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: NOskar Schirmer <oskar@scara.com>
Acked-by: NMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>

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

[wsa: Slightly updated the commit message]
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>

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: NJayachandran C <jayachandranc@netlogicmicro.com>
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>

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: NGanesan Ramalingam <ganesanr@netlogicmicro.com>
Signed-off-by: NJayachandran C <jayachandranc@netlogicmicro.com>
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>

Add support for SMBUS_READ_BLOCK_DATA to the i2c-mpc bus driver.
Signed-off-by: NTang Yuantian <Yuantian.Tang@freescale.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>

This patch adds Device Tree binding ("arm,versatile-i2c") and
basic support (bus population) to versatile-i2c driver.
Signed-off-by: NPawel Moll <pawel.moll@arm.com>

[wsa: constified match-table]
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>

It was originally missed in the __devinit/__devexit annotations.
Signed-off-by: NShubhrajyoti D <shubhrajyoti@ti.com>
Acked-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NOlof Johansson <olof@lixom.net>

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: NBenoit Cousson <b-cousson@ti.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: NTony Lindgren <tony@atomide.com>

On October 1 in 2011,
OKI SEMICONDUCTOR Co., Ltd. changed the company name in to LAPIS Semiconductor Co., Ltd.
Signed-off-by: NTomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

ML7831 is companion chip for Intel Atom E6xx series.
Signed-off-by: NTomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

This patch modified the setting value of
I2C Bus Transfer Rate Setting Counter regisrer.
Signed-off-by: NToshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

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: NFeng Tang <feng.tang@intel.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

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: NBenoit Cousson <b-cousson@ti.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Reviewed-by: NRob Herring <rob.herring@calxeda.com>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NKevin Hilman <khilman@ti.com>

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: NJan Weitzel <j.weitzel@phytec.de>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NKevin Hilman <khilman@ti.com>

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: NAlexander Aring <a.aring@phytec.de>
[khilman@ti.com: minor changelog edits]
Cc: stable@vger.kernel.org
Signed-off-by: NKevin Hilman <khilman@ti.com>

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: NMauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

Convert gpio-i2cmux to use the module_platform_driver() macro which
makes the code smaller and a bit simpler.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NPeter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NJochen Friedrich <jochen@scram.de>
Acked-by: NPeter Korsgaard <jacmet@sunsite.dk>
Acked-by: NWolfram 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: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NThomas Meyer <thomas@m3y3r.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NAxel Lin <axel.lin@gmail.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: NOlof Johansson <olof@lixom.net>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Acked-by: NDirk Brandewie <dirk.brandewie@gmail.com>
Cc: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>
Cc: Feng Tang <feng.tang@intel.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NLABBE Corentin <corentin.labbe@geomatys.fr>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NJean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org

This patch converts the driver to use the module_platform_driver()
macro which makes the code smaller and a bit simpler.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NGuan Xuetao <gxt@mprc.pku.edu.cn>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Add of_match_table and DT style i2c registration to designware i2c
driver.

Refactored for pci/plat split by Dirk Brandewie.
Signed-off-by: NRob Herring <rob.herring@calxeda.com>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NDirk Brandewie <dirk.brandewie@gmail.com>

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: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

This fixes some section mismatch build warnings.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

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: NFeng Tang <feng.tang@intel.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

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: NNishanth Menon <nm@ti.com>
Signed-off-by: NShubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: NKevin Hilman <khilman@ti.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

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: NTushar Behera <tushar.behera@linaro.org>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Be a bit more friendly.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

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: NManuel Lauss <manuel.lauss@googlemail.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2866/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

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: NAxel Lin <axel.lin@gmail.com>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NWan Zongshun <mcuos.com@gmail.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

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: NShubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NJean Delvare <khali@linux-fr.org>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>

The wrong bits were put on the wire, fix that.

This fixes kernel bug #42562.
Signed-off-by: NSheng-Hui J. Chu <jeffchu@broadcom.com>
Cc: stable@kernel.org
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NGreg Kroah-Hartman <gregkh@suse.de>