On Thu, Apr 28, 2011 at 4:22 PM, Jean Delvare kh...@linux-fr.org wrote:
Hi Haojian,
On Thu, 28 Apr 2011 12:02:36 +0800, Haojian Zhuang wrote:
Both AP and CP are contained in Marvell PXA910 silicon. These two ARM
cores are sharing one pair of I2C pins.
In order to keep I2C transaction
Hi Eric,
On Thu, 28 Apr 2011 16:36:02 +0800, Eric Miao wrote:
On Thu, Apr 28, 2011 at 4:22 PM, Jean Delvare kh...@linux-fr.org wrote:
Hi Haojian,
On Thu, 28 Apr 2011 12:02:36 +0800, Haojian Zhuang wrote:
Both AP and CP are contained in Marvell PXA910 silicon. These two ARM
cores are
On Thu, Apr 28, 2011 at 10:37 PM, Russell King - ARM Linux
li...@arm.linux.org.uk wrote:
On Thu, Apr 28, 2011 at 04:16:25PM +0200, Jean Delvare wrote:
Are you suggesting that the hardware lock wouldn't mind being taken
twice by the AP side? If it is the case, then indeed the software mutex
is
Both AP and CP are contained in Marvell PXA910 silicon. These two ARM
cores are sharing one pair of I2C pins.
In order to keep I2C transaction operated with atomic, hardware lock
(RIPC) is required. Because of this, bus lock in AP side can't afford
this requirement. Now hardware lock is appended.
Append hardware lock support since it's required by Marvell PXA910.
Signed-off-by: Haojian Zhuang haojian.zhu...@marvell.com
Cc: Ben Dooks ben-li...@fluff.org
Cc: Jean Delvare kh...@linux-fr.org
---
drivers/i2c/busses/i2c-pxa.c |3 +++
include/linux/i2c/pxa-i2c.h |3 +++
2 files
RIPC register is used to implement hardware lock between CP and
AP in Marvell PXA910.
Signed-off-by: Haojian Zhuang haojian.zhu...@gmail.com
Cc: Ben Dooks ben-li...@fluff.org
Cc: Jean Delvare kh...@linux-fr.org
Cc: Eric Miao eric.y.m...@gmail.com
Cc: Russell King li...@arm.linux.org.uk
---
Use a standard list with proper locking to handle the list of
adapters. Thankfully it only matters on systems with more than one
parallel port, which are very rare.
Thanks to Lukasz Kapiec for reporting the problem to me.
Signed-off-by: Jean Delvare kh...@linux-fr.org
Cc: sta...@kernel.org
---
On Thu, Apr 28, 2011 at 01:25:36PM +0900, Magnus Damm wrote:
From: Magnus Damm d...@opensource.se
Add support to the i2c-sh_mobile driver for setting
the I2C bus speed using platform data.
Signed-off-by: Magnus Damm d...@opensource.se
Acked-by: Simon Horman ho...@verge.net.au
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