diff options
| author | Timo Alho <talho@nvidia.com> | 2017-10-03 09:12:13 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2017-10-19 16:27:56 +0200 |
| commit | f2381f652266fabfb7a8f5c4b2a05de36cad3a73 (patch) | |
| tree | 7cc1a2b2ea4abd3a97676a119960ed7a5d702a06 /include/soc | |
| parent | 80d47a91e5db96e5db391aaad414fb6ceb40e7c0 (diff) | |
| download | linux-f2381f652266fabfb7a8f5c4b2a05de36cad3a73.tar.bz2 | |
firmware: tegra: Add BPMP debugfs support
Tegra power management firmware running on the co-processor (BPMP)
implements a simple pseudo file system akin to debugfs. The file
system can be used for debugging purposes to examine and change the
status of selected resources controlled by the firmware (such as
clocks, resets, voltages, powergates, ...).
Add support to "mirror" the firmware's file system to debugfs. At
boot, query firmware for a list of all possible files and create
corresponding debugfs entries. Read/write of individual files is
implemented by sending a Message ReQuest (MRQ) that passes the full
file path name and data to firmware via DRAM.
Signed-off-by: Timo Alho <talho@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'include/soc')
| -rw-r--r-- | include/soc/tegra/bpmp.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/soc/tegra/bpmp.h b/include/soc/tegra/bpmp.h index 1cf210504814..aeae4466dd25 100644 --- a/include/soc/tegra/bpmp.h +++ b/include/soc/tegra/bpmp.h @@ -94,6 +94,10 @@ struct tegra_bpmp { struct reset_controller_dev rstc; struct genpd_onecell_data genpd; + +#ifdef CONFIG_DEBUG_FS + struct dentry *debugfs_mirror; +#endif }; struct tegra_bpmp_message { @@ -189,4 +193,14 @@ static inline int tegra_bpmp_init_powergates(struct tegra_bpmp *bpmp) } #endif +#if IS_ENABLED(CONFIG_DEBUG_FS) +int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp); +#else +static inline int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp) +{ + return 0; +} +#endif + + #endif /* __SOC_TEGRA_BPMP_H */ |