diff options
| author | Timo Alho <talho@nvidia.com> | 2017-10-03 08:12:13 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2017-10-19 16:27:56 +0200 |
| commit | f2381f652266fabfb7a8f5c4b2a05de36cad3a73 (patch) | |
| tree | 7cc1a2b2ea4abd3a97676a119960ed7a5d702a06 /drivers/firmware/tegra/bpmp.c | |
| parent | firmware: tegra: Add stubs when BPMP not enabled (diff) | |
| download | linux-f2381f652266fabfb7a8f5c4b2a05de36cad3a73.tar.xz linux-f2381f652266fabfb7a8f5c4b2a05de36cad3a73.zip | |
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 'drivers/firmware/tegra/bpmp.c')
| -rw-r--r-- | drivers/firmware/tegra/bpmp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c index aa4bbbd7bdb4..a7f461f2e650 100644 --- a/drivers/firmware/tegra/bpmp.c +++ b/drivers/firmware/tegra/bpmp.c @@ -835,6 +835,10 @@ static int tegra_bpmp_probe(struct platform_device *pdev) if (err < 0) goto free_mrq; + err = tegra_bpmp_init_debugfs(bpmp); + if (err < 0) + dev_err(&pdev->dev, "debugfs initialization failed: %d\n", err); + return 0; free_mrq: |