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| author |  Sudeep Holla <sudeep.holla@arm.com>
| 2016-08-25 15:19:09 -0600 |
|---|---|---|
| committer |  Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| 2016-08-31 13:05:43 +0200 |
| commit | 3224dcc5a6ce919ddef2a387dcb4c47666480ed0 (patch) | |
| tree | 4e58bcd819e6238755770f99a020b5146642a005 /drivers/hwtracing/coresight/coresight-stm.c | |
| parent | coresight: etm4x: request to retain power to the trace unit when active (diff) | |
| download | linux-3224dcc5a6ce919ddef2a387dcb4c47666480ed0.tar.gz linux-3224dcc5a6ce919ddef2a387dcb4c47666480ed0.tar.bz2 linux-3224dcc5a6ce919ddef2a387dcb4c47666480ed0.zip | |
coresight: fix handling of ETM trace register access via sysfs
The ETM registers are classified into 2 categories: trace and management.
The core power domain contains most of the trace unit logic including
all(except TRCOSLAR and TRCOSLSR) the trace registers. The debug power
domain contains the external debugger interface including all management
registers.
This patch adds coresight unit specific function coresight_simple_func
which can be used for ETM trace registers by providing a ETM specific
read function which does smp cross call to ensure the trace core is
powered up before the register is accessed.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-stm.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-stm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index 819629aed2f7..7949f0f6744a 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -635,7 +635,7 @@ static ssize_t traceid_store(struct device *dev, static DEVICE_ATTR_RW(traceid); #define coresight_stm_simple_func(name, offset) \ - coresight_simple_func(struct stm_drvdata, name, offset) + coresight_simple_func(struct stm_drvdata, NULL, name, offset) coresight_stm_simple_func(tcsr, STMTCSR); coresight_stm_simple_func(tsfreqr, STMTSFREQR); |