diff options
| author | Mathieu Poirier <mathieu.poirier@linaro.org> | 2016-05-03 20:33:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-05-04 00:59:30 +0300 |
| commit | 4f1ff3de925d741b0b77c59bc1387cb940ad7c73 (patch) | |
| tree | d3e2d92f460276c89ce5136091baf78d0cbfd44b /drivers/hwtracing/coresight/coresight-tmc.h | |
| parent | b217601e9adce4d2dccc95a9e6814bdbf5a4a815 (diff) | |
| download | linux-4f1ff3de925d741b0b77c59bc1387cb940ad7c73.tar.xz | |
coresight: tmc: keep track of memory width
Accessing the HW configuration register each time the memory
width is needed simply doesn't make sense. It is much more
efficient to read the value once and keep a reference for
later use.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-tmc.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h index 94bc034d3b98..c5d06fd57fa8 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.h +++ b/drivers/hwtracing/coresight/coresight-tmc.h @@ -81,10 +81,10 @@ enum tmc_mode { }; enum tmc_mem_intf_width { - TMC_MEM_INTF_WIDTH_32BITS = 0x2, - TMC_MEM_INTF_WIDTH_64BITS = 0x3, - TMC_MEM_INTF_WIDTH_128BITS = 0x4, - TMC_MEM_INTF_WIDTH_256BITS = 0x5, + TMC_MEM_INTF_WIDTH_32BITS = 1, + TMC_MEM_INTF_WIDTH_64BITS = 2, + TMC_MEM_INTF_WIDTH_128BITS = 4, + TMC_MEM_INTF_WIDTH_256BITS = 8, }; /** @@ -100,6 +100,7 @@ enum tmc_mem_intf_width { * @size: @buf size. * @mode: how this TMC is being used. * @config_type: TMC variant, must be of type @tmc_config_type. + * @memwidth: width of the memory interface databus, in bytes. * @trigger_cntr: amount of words to store after a trigger. */ struct tmc_drvdata { @@ -115,6 +116,7 @@ struct tmc_drvdata { u32 size; local_t mode; enum tmc_config_type config_type; + enum tmc_mem_intf_width memwidth; u32 trigger_cntr; }; |