user/sven/linux.git/drivers/opp/debugfs.c, branch v6.1.152

OPP: debugfs: Fix warning around icc_get_name()

2024-03-26T22:20:42Z

[ Upstream commit 28330ceb953e39880ea77da4895bb902a1244860 ] If the kernel isn't built with interconnect support, icc_get_name() returns NULL and we get following warning: drivers/opp/debugfs.c: In function 'bw_name_read': drivers/opp/debugfs.c:43:42: error: '%.62s' directive argument is null [-Werror=format-overflow=] i = scnprintf(buf, sizeof(buf), "%.62s\n", icc_get_name(path)); Fix it. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202402141313.81ltVF5g-lkp@intel.com/ Fixes: 0430b1d5704b0 ("opp: Expose bandwidth information via debugfs") Signed-off-by: Viresh Kumar Reviewed-by: Dhruva Gole Signed-off-by: Sasha Levin

OPP: fix error checking in opp_migrate_dentry()

2023-03-10T08:33:01Z

[ Upstream commit eca4c0eea53432ec4b711b2a8ad282cbad231b4f ] Since commit ff9fb72bc077 ("debugfs: return error values, not NULL") changed return value of debugfs_rename() in error cases from %NULL to %ERR_PTR(-ERROR), we should also check error values instead of NULL. Fixes: ff9fb72bc077 ("debugfs: return error values, not NULL") Signed-off-by: Qi Zheng Signed-off-by: Viresh Kumar Signed-off-by: Sasha Levin

OPP: Allow multiple clocks for a device

2022-07-12T15:05:20Z

This patch adds support to allow multiple clocks for a device. The design is pretty much similar to how this is done for regulators, and platforms can supply their own version of the config_clks() callback if they have multiple clocks for their device. The core manages the calls via opp_table->config_clks() eventually. We have kept both "clk" and "clks" fields in the OPP table structure and the reason is provided as a comment in _opp_set_clknames(). The same isn't done for "rates" though and we use rates[0] at most of the places now. Co-developed-by: Krzysztof Kozlowski Signed-off-by: Krzysztof Kozlowski Tested-by: Jon Hunter Tested-by: Dmitry Osipenko Tested-by: Manivannan Sadhasivam Signed-off-by: Viresh Kumar

opp: use list iterator only inside the loop

2022-04-11T03:01:43Z

To move the list iterator variable into the list_for_each_entry_*() macro in the future it should be avoided to use the list iterator variable after the loop body. To *never* use the list iterator variable after the loop it was concluded to use a separate dedicated pointer variable [1]. In this case, use a new variable 'iter' as the list iterator, while use the old variable 'new_dev' as a dedicated pointer to point to the found entry. And BUG_ON(!new_dev);. [1]: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/ Signed-off-by: Xiaomeng Tong Signed-off-by: Viresh Kumar

OPP: Add "opp-microwatt" supporting code

2022-03-03T04:05:04Z

Add new property to the OPP: power value. The OPP entry in the DT can have "opp-microwatt". Add the needed code to handle this new property in the existing infrastructure. Signed-off-by: Lukasz Luba Signed-off-by: Viresh Kumar

opp: Expose of-node's name in debugfs

2022-02-11T04:29:04Z

It is difficult to find which OPPs are active at the moment, specially if there are multiple OPPs with same frequency available in the device tree (controlled by supported hardware feature). Expose name of the DT node to find out the exact OPP. While at it, also expose level field. Reported-by: Leo Yan Tested-by: Leo Yan Signed-off-by: Viresh Kumar

opp: Expose bandwidth information via debugfs

2020-05-29T04:45:12Z

Expose the bandwidth information as well via debugfs. Signed-off-by: Viresh Kumar Signed-off-by: Georgi Djakov

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55Z

Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

opp: no need to check return value of debugfs_create functions

2019-02-07T04:28:32Z

When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Viresh Kumar Cc: Nishanth Menon Cc: Stephen Boyd Cc: linux-pm@vger.kernel.org Reviewed-by: Stephen Boyd Signed-off-by: Greg Kroah-Hartman Signed-off-by: Viresh Kumar

PM / OPP: "opp-hz" is optional for power domains

2018-05-09T04:45:18Z

"opp-hz" property is optional for power domains now and we shouldn't error out if it is missing for power domains. This patch creates two new routines, _get_opp_count() and _opp_is_duplicate(), by separating existing code from their parent functions. Also skip duplicate OPP check for power domain OPPs as they may not have any the "opp-hz" field, but a platform specific performance state binding to uniquely identify OPP nodes. By default the debugfs OPP nodes are named using the "rate" value, but that isn't possible for the power domain OPP nodes and hence they use the index of the OPP node in the OPP node list instead. Signed-off-by: Viresh Kumar Reviewed-by: Ulf Hansson