tree 8e4aaa8c266e4cac18b6902bff3022d0c0fea297
parent c1a327c4d3d7d2ce2c75e77fcfd34a729ab45f6f
author Alexander Shishkin <alexander.shishkin@linux.intel.com> 1455556315 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1456006154 -0800

intel_th: Update scratchpad bits according to enabled output activity

Intel TH implements a scratchpad register to indicate to the firmware
and external debuggers what trace configuration is enabled so that
everybody plays nicely together. The register is a bit field and the
bit assignment convention is described in the developer's manual.

This patch enables the driver to automatically set scratchpad register
bits according to the output configuration that's enabled.

Based on work by Yann Fouassier.

Signed-off-by: Yann Fouassier <yann.fouassier@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>