kernel.git/drivers/i2c/i2c-core.c, branch linux-3.6.y

i2c-core: Fix for lockdep validator

2012-09-10T08:14:02Z

If kernel is compiled with CONFIG_PROVE_LOCKING the validator raises an error when a multiplexer is removed via sysfs and sub-clients are connected to it. This is a false positive. Documentation/lockdep-design.txt recommends to handle this via calls to mutex_lock_nested(). Based on an earlier fix from Michael Lawnick. Note that the extra code resolves to nothing unless CONFIG_DEBUG_LOCK_ALLOC=y. Signed-off-by: Jean Delvare Cc: Michael Lawnick

Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

2012-07-31T02:03:41Z

Pull media updates from Mauro Carvalho Chehab: "This is the first part of the media patches for v3.6. This patch series contain: - new DVB frontend: rtl2832 - new video drivers: adv7393 - some unused files got removed - a selection API cleanup between V4L2 and V4L2 subdev API's - a major redesign at v4l-ioctl2, in order to clean it up - several driver fixes and improvements." * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (174 commits) v4l: Export v4l2-common.h in include/linux/Kbuild media: Revert "[media] Terratec Cinergy S2 USB HD Rev.2" [media] media: Use pr_info not homegrown pr_reg macro [media] Terratec Cinergy S2 USB HD Rev.2 [media] v4l: Correct conflicting V4L2 subdev selection API documentation [media] Feature removal: V4L2 selections API target and flag definitions [media] v4l: Unify selection flags documentation [media] v4l: Unify selection flags [media] v4l: Common documentation for selection targets [media] v4l: Unify selection targets across V4L2 and V4L2 subdev interfaces [media] v4l: Remove "_ACTUAL" from subdev selection API target definition names [media] V4L: Remove "_ACTIVE" from the selection target name definitions [media] media: dvb-usb: print mac address via native %pM [media] s5p-tv: Use module_i2c_driver in sii9234_drv.c file [media] media: gpio-ir-recv: add allowed_protos for platform data [media] s5p-jpeg: Use module_platform_driver in jpeg-core.c file [media] saa7134: fix spelling of detach in label [media] cx88-blackbird: replace ioctl by unlocked_ioctl [media] cx88: don't use current_norm [media] cx88: fix a number of v4l2-compliance violations ...

i2c: Fall back to emulated SMBus if the operation isn't supported natively

2012-07-24T12:13:59Z

Adapter drivers might support only a subset of the SMBus operations natively. Those drivers currently have to manually emulate unsupported operations using I2C. Make the i2c_smbus_xfer() function fall back to i2c_smbus_xfer_emulated() when the adapter's .smbus_xfer() operation returns -EOPNOTSUPP, like it already does when the .smbus_xfer() operation isn't available at all. [JD: Minor optimization.] Signed-off-by: Laurent Pinchart Signed-off-by: Jean Delvare

i2c: Add SCCB support

2012-07-24T12:13:59Z

SCCB is a serial communication bus developed by Omnivision. Its 2-wire mode is very similar to SMBus byte data transactions, but requires the controller to ignore the ACK bit and to insert a stop condition after each message. Add a device SCCB flag and a message stop flag to be passed to controller drivers. [JD: Kill rogue definition in go7007 driver.] Signed-off-by: Laurent Pinchart Signed-off-by: Jean Delvare

[media] i2c: Export an unlocked flavor of i2c_transfer

2012-06-29T22:03:25Z

Some drivers (in particular for TV cards) need exclusive access to their I2C buses for specific operations. Export an unlocked flavor of i2c_transfer to give them full control. The unlocked flavor has the following limitations: * Obviously, caller must hold the i2c adapter lock. * No debug messages are logged. We don't want to log messages while holding a rt_mutex. * No check is done on the existence of adap->algo->master_xfer. It is thus the caller's responsibility to ensure that the function is OK to call. Signed-off-by: Jean Delvare Signed-off-by: Mauro Carvalho Chehab

i2c: implement i2c_verify_adapter

2012-05-12T12:28:16Z

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 Acked-by: Jean Delvare Signed-off-by: Wolfram Sang

i2c: Update the FSF address

2012-03-26T19:47:19Z

Signed-off-by: Jean Delvare

i2c-core: Comment says "transmitted" but means "received"

2012-03-15T17:11:05Z

Fix that. Also convert this and the related comment to proper commenting style. Signed-off-by: Wolfram Sang Signed-off-by: Jean Delvare

i2c: Fix device name for 10-bit slave address

2011-11-23T10:33:07Z

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 Acked-by: Wolfram Sang

i2c: Allow i2c_add_numbered_adapter() to assign a bus id

2011-07-25T15:49:43Z

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 Signed-off-by: Jean Delvare