Commit Graph

7 Commits

Author SHA1 Message Date
Andy Shevchenko
1d2ef028bf intel_th: pti: Use sysfs_match_string() helper
Use sysfs_match_string() helper instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
2019-02-21 15:04:36 +02:00
Alexander Shishkin
50352fa730 intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate
This adds SPDX GPL-2.0 header to the Trace Hub driver and removes the
GPLv2 boilerplate text.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
2018-03-28 18:47:19 +03:00
Alexander Shishkin
f77d22bc12 intel_th: pti: Support Low Power Path output port type
The Low Power Path (LPP) output port type, looks mostly like PTI to
the software, with a few additional bits in the control register.

This extends the PTI driver to support LPP ports as well.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
2017-08-25 18:47:57 +03:00
Alexander Shishkin
e8644e4c2a intel_th: pti: Create sysfs attributes using core driver's facility
The core intel_th driver allows subdevices to bring in their sysfs
attributes. Use this instead of taking care of them in probe and
remove.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Laurent Fert <laurent.fert@intel.com>
2016-04-08 16:11:57 +03:00
Alexander Shishkin
8f1127ea09 intel_th: pti: Do remove sysfs group on device removal
Right now, the PTI output driver forgets to clean up its sysfs group
when it gets removed. Fix this.

Reported-by: Alan Cox <alan.cox@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Laurent Fert <laurent.fert@intel.com>
2016-04-08 16:11:54 +03:00
Dan Carpenter
73061da07d intel_th: Check for NULL instead of ERR_PTR
devm_ioremap() returns NULL on error, it doesn't return an ERR_PTR,
which is what the current code does. This patch corrects these
checks.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 23:25:48 -07:00
Alexander Shishkin
14cdbf0417 intel_th: Add PTI output driver
Parallel Trace Interface (PTI) unit is a trace output device that sends
data over a PTI port.

The driver provides interfaces to configure bus width, bus clock divider
and mode. Tracing is enabled via output device's "active" attribute.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-04 20:28:58 +01:00