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| author | Sudeep Holla <sudeep.holla@arm.com> | 2016-08-26 00:19:09 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-31 14:05:43 +0300 |
| commit | 3224dcc5a6ce919ddef2a387dcb4c47666480ed0 (patch) | |
| tree | 4e58bcd819e6238755770f99a020b5146642a005 /drivers/hwtracing/coresight/coresight-tmc.c | |
| parent | 46a3d5cdb029471247b7be050332df399eca3ee1 (diff) | |
| download | linux-3224dcc5a6ce919ddef2a387dcb4c47666480ed0.tar.xz | |
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-tmc.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc.c b/drivers/hwtracing/coresight/coresight-tmc.c index 4cbcaf93c9d9..a4748630f5d6 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.c +++ b/drivers/hwtracing/coresight/coresight-tmc.c @@ -218,7 +218,7 @@ static enum tmc_mem_intf_width tmc_get_memwidth(u32 devid) } #define coresight_tmc_simple_func(name, offset) \ - coresight_simple_func(struct tmc_drvdata, name, offset) + coresight_simple_func(struct tmc_drvdata, NULL, name, offset) coresight_tmc_simple_func(rsz, TMC_RSZ); coresight_tmc_simple_func(sts, TMC_STS); |