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| author |   Suzuki K Poulose <suzuki.poulose@arm.com> | 2017-08-02 10:22:07 -0600 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-28 16:05:48 +0200 |
| commit | 6f6ab4fce56bbb0385d3d2d62d8c9f688618d5ac (patch) | |
| tree | 3690e46baa89428d03baf7c9e3fc493ec6435177 /drivers/hwtracing/coresight/coresight-priv.h | |
| parent | coresight: Use the new helper for defining registers (diff) | |
| download | linux-dev-6f6ab4fce56bbb0385d3d2d62d8c9f688618d5ac.tar.xz linux-dev-6f6ab4fce56bbb0385d3d2d62d8c9f688618d5ac.zip | |
coresight tmc: Add helpers for accessing 64bit registers
Coresight TMC splits 64bit registers into a pair of 32bit registers
(e.g DBA, RRP, RWP). Provide helpers to read/write to these registers.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@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-priv.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-priv.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index 9fdebb773e71..f1d0e21d8cab 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -127,6 +127,14 @@ coresight_read_reg_pair(void __iomem *addr, s32 lo_offset, s32 hi_offset) return val; } +static inline void coresight_write_reg_pair(void __iomem *addr, u64 val, + s32 lo_offset, s32 hi_offset) +{ + writel_relaxed((u32)val, addr + lo_offset); + if (hi_offset >= 0) + writel_relaxed((u32)(val >> 32), addr + hi_offset); +} + void coresight_disable_path(struct list_head *path); int coresight_enable_path(struct list_head *path, u32 mode); struct coresight_device *coresight_get_sink(struct list_head *path); |