This controller is also present on the S3C64xx series processors so
enable the driver in Kconfig for those platforms.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

The clock setting did not work for the MPC52xx due to a stupid bug.
Furthermore, the dev info output "clock=0" for old device trees was
misleading. This patch fixes both issues.
Signed-off-by: NWolfgang Grandegger <wg@grandegger.com>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

With `while (timeout--)' timeout reaches -1 after the loop, so the tests
below are off by one.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Support for I2C/DDC was recently added to the tdfxfb driver, which
means that the i2c-voodoo3 driver can be deprecated.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>

'disable_delay' was static which is wrong as it is calculated using the per-device
bus speed. This patch turns 'disable_delay' into a per-device variable.
Reported-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Acked-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: NDarius Augulis <augulis.darius@gmail.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Support for the s6000 on-chip i2c controller.
Signed-off-by: NOskar Schirmer <os@emlix.com>
Signed-off-by: NDaniel Glöckner <dg@emlix.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

This patch makes the I2C bus speed configurable by using the I2C node
property "clock-frequency". If the property is not defined, the old
fixed clock settings will be used for backward comptibility.

The generic I2C clock properties, especially the CPU-specific source
clock pre-scaler are defined via the OF match table:

  static const struct of_device_id mpc_i2c_of_match[] = {
	...
	{.compatible = "fsl,mpc8543-i2c",
	 .data = &(struct fsl_i2c_match_data) {
			.setclock = mpc_i2c_setclock_8xxx,
			.prescaler = 2,
		},
	},

The "data" field defines the relevant I2C setclock function and the
relevant pre-scaler for the I2C source clock frequency.

It uses arch-specific tables and functions to determine resonable
Freqency Divider Register (fdr) values for MPC83xx, MPC85xx, MPC86xx,
MPC5200 and MPC5200B.

The i2c->flags field and the corresponding FSL_I2C_DEV_* definitions
have been removed as they are obsolete.
Signed-off-by: NWolfgang Grandegger <wg@grandegger.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

This patch used the dev_dbg, dev_err, etc. functions for debug
and error output instead of printk and pr_debug.
Signed-off-by: NWolfgang Grandegger <wg@grandegger.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Fix errors reported by checkpatch (indention, long lines, trailing
white space, etc.).
Signed-off-by: NWolfgang Grandegger <wg@grandegger.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Signed-off-by: NDarius Augulis <augulis.darius@gmail.com>
[ben-linux@fluff.org: fix minor patch fault in remove]
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

This is required in order to ensure that core system devices such as
voltage regulators attached via I2C are avaiable early in boot.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

The platform data for the i2c-s3c2410 driver used to allow a min,
max and desired frequency for the I2C bus. This patch reduces it
to simply a desired frequency ceiling and corrects all the uses
of the platform data appropriately.

This means, for example, that on a system with a 66MHz fclk, a
request for 100KHz will achieve 65KHz which is safe and
acceptable, rather than 378KHz which it would have achieved
without this change.
Signed-off-by: NSimtec Linux Team <linux@simtec.co.uk>
Signed-off-by: NDaniel Silverstone <dsilvers@simtec.co.uk>
[ben-linux@fluff.org: tidy subject and description]
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

The sda_delay field should be specified in ns, not in clock ticks
as when using cpufreq we could be changing the bus rate.
Signed-off-by: NBen Dooks <ben@simtec.co.uk>

Implementation of I2C Adapter/Algorithm Driver for I2C Bus integrated
in Freescale's i.MX/MXC processors.
Signed-off-by: NDarius Augulis <augulis.darius@gmail.com>
Tested-by: NSascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Detect various FSC hwmon IC's based on DMI tables and then let
the i2c-i801 driver instantiate the i2c client devices. Note that
some of the info in the added table is indentical for all rows, still
this is kept in the table to keep the code general and thus (hopefully)
easily extensible in the future.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add support for the Broadcom HT1100 LD chipset (SMBus function.)
Signed-off-by: NFlavio Leitner <fbl@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add support for the AMD SB800 Family series of products.
Major changes include the changes to addressing the SMBus registers at different
location from the locations in the previous compatible parts from AMD such as
SB400/SB600/SB700. For SB800, the main features and register definitions of
SMBus and other interfaces are still compatible with the previous products with
the only change being in how to access the internal registers for these blocks.
Signed-off-by: NShane Huang <shane.huang@amd.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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

We now timeout also if the state machine does not change within the
given time. For that, the driver-specific completion-functions are
extended to return true or false depending on the timeout. This then
gets checked in the algorithm.
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Waiting for a free bus now accepts the timeout value in jiffies and does
proper checking using time_before.
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add support for the PCA9665 I2C controller.
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Properly set the adapter timeout value in jiffies, and then use that
value in the driver, rather than a hard-coded constant.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Tested-by: NTroy Kisky <troy.kisky@boundarydevices.com>
Cc: Kevin Hilman <khilman@mvista.com>

i2c_adapter.timeout is in jiffies. Fix all drivers which thought
otherwise. It didn't really matter as long as the value was only used
inside the driver, but soon i2c-core will use it too so it must have
the proper unit.

Note: for the i2c-mpc driver, this fixes a bug in polling mode.
Timeout would trigger after 1 jiffy, which is most probably not what
the author wanted.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Clifford Wolf <clifford@clifford.at>
Acked-by: NSean MacLennan <smaclennan@pikatech.com>
Cc: Stefan Roese <sr@denx.de>
Acked-by: NLennert Buytenhek <kernel@wantstofly.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Acked-by: NMark A. Greer <mgreer@mvista.com>

According to kerneljanitors todo list all printk calls (beginning
a new line) should have an according KERN_* constant.
Those are the missing pieces here for the i2c subsystem.
Signed-off-by: NFrank Seidel <frank@f-seidel.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

The MCP78S and MCP79 appear to be compatible with the previous nForce
chips as far as the SMBus controller is concerned. The MCP67 and MCP73
were not tested yet but I'd be very surprised if they weren't
compatible too.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Oleg Ryjkov <olegr@olegr.ca>
Cc: Malcolm Lalkaka <mlalkaka@gmail.com>
Cc: Zbigniew Luszpinski <zbiggy@o2.pl>

Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The i2c_wait() function is using wait_event_interruptible_timeout() to wait for
the I2C controller to signal that it has completed an I2C bus operation.  If
the process that causes the I2C operation terminated abruptly, the wait will
be interrupted, returning an error.  It is better to let the I2C operation
finished before the process exits.

It is safe to use wait_event_timeout() instead, because the timeout will allow
the process to exit if the I2C bus hangs.  It's also better to allow the
I2C operation to finish, because unacknowledged I2C operations can cause the
I2C bus to hang.
Signed-off-by: NTimur Tabi <timur@freescale.com>
Acked-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

`iop_adma_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
`mv_xor_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
`mv64xxx_i2c_unmap_regs' referenced in section `.devinit.text' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
`mv64xxx_i2c_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
`orion_nand_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
`pxafb_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
Acked-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Add the necessary i2c_board_info structure to fix the lack of PCF8583
RTC on RiscPC.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>

i2c_algo_bit_data.timeout is supposed to be in jiffies, so drivers
should use set this value in terms of HZ.

Ultimately I think this field should be discarded in favor of
i2c_adapter.timeout, but that's left for a future patch.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Acked-by: NLennert Buytenhek <kernel@wantstofly.org>
Acked-by: NLen Sorensen <lsorense@csclub.uwaterloo.ca>

With a postfix decrement these timeouts reach -1 rather than 0, but
after the loop it is tested whether they have become 0.

As pointed out by Jean Delvare, the condition we are waiting for should
also be tested before the timeout. With the current order, you could
exit with a timeout error while the job is actually done.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

If dev->id is not -1, the platform code may use static bus numbering
rather than dynamic. The patch also changes the i2c_versatile_init to a
subsys_initcall rather than module_init to make sure it is initialised
before the I2C devices initialisation.
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
Acked-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

By providing a dummy ick for OMAP1510 and OMAP310, we avoid having
SoC conditional clock information in i2c-omap.c.  Also, fix the
error handling by making sure we propagate the error returned via
clk_get().
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

On OMAP1, the I2C functional clock (fck) is the armxor_ck, so there's
no need to get "armxor_ck" separately.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Signed-off-by: NJean Delvare <khali@linux-fr.org>

Use snprintf instead of sprintf to set adapter names, it's safer.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Convert the apanel driver to the new i2c device driver binding model,
as the legacy model is going away soon. In the new model, the apanel
driver is no longer scanning all the i2c adapters, instead the
relevant bus driver (i2c-i801) is instantiating the device as needed.

One side benefit is that the apanel driver will now load automatically
on all systems where it is needed.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Stephen Hemminger <shemminger@linux-foundation.org>

I2C_CLASS_ALL is almost never what bus driver authors really want.
These i2c classes are really only about which devices must be probed,
not what devices can be present. As device drivers get converted to the
new i2c device driver model, only a few device types will keep relying
on probing.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: Sonic Zhang <sonic.zhang@analog.com> 

Use dev_name(dev) instead of accessing dev.bus_id directly, as the
latter is going away soon.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Kay Sievers <kay.sievers@vrfy.org>