linux_old1

Commit Graph

Author	SHA1	Message	Date
Andy Shevchenko	9b5c9f043e	i2c: designware-baytrail: describe magic numbers The patch converts hardcoded numerical constants to a named ones. While here, align the variable name in get_sem() and reset_semaphore(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>	2015-03-07 01:07:07 +01:00
David Box	894acb2f82	i2c: designware: Add Intel Baytrail PMIC I2C bus support This patch implements an I2C bus sharing mechanism between the host and platform hardware on select Intel BayTrail SoC platforms using the X-Powers AXP288 PMIC. On these platforms access to the PMIC must be shared with platform hardware. The hardware unit assumes full control of the I2C bus and the host must request access through a special semaphore. Hardware control of the bus also makes it necessary to disable runtime pm to avoid interfering with hardware transactions. Signed-off-by: David E. Box <david.e.box@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>	2015-01-26 12:26:25 +01:00

Author

SHA1

Message

Date

Andy Shevchenko

9b5c9f043e

i2c: designware-baytrail: describe magic numbers

The patch converts hardcoded numerical constants to a named ones.

While here, align the variable name in get_sem() and reset_semaphore().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: David E. Box <david.e.box@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

2015-03-07 01:07:07 +01:00

David Box

894acb2f82

i2c: designware: Add Intel Baytrail PMIC I2C bus support

This patch implements an I2C bus sharing mechanism between the host and platform
hardware on select Intel BayTrail SoC platforms using the X-Powers AXP288 PMIC.

On these platforms access to the PMIC must be shared with platform hardware. The
hardware unit assumes full control of the I2C bus and the host must request
access through a special semaphore. Hardware control of the bus also makes it
necessary to disable runtime pm to avoid interfering with hardware transactions.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

2015-01-26 12:26:25 +01:00

2 Commits