cpufreq: Reintroduce ready() callback

This effectively revert '4bf8e582119e ("cpufreq: Remove ready()
callback")', in order to reintroduce the ready callback.

This is needed in order to be able to leave the thermal pressure
interrupts in the Qualcomm CPUfreq driver disabled during
initialization, so that it doesn't fire while related_cpus are still 0.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
[ Viresh: Added the Chinese translation as well and updated commit msg ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

doc/zh-CN: Update cpu-freq/cpu-drivers.rst to make it more readable

There are some syntax errors in this document.
Also make it more readable.

Signed-off-by: Tang Yizhou <tangyizhou@huawei.com>
Acked-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/20211202050816.12240-1-tangyizhou@huawei.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

cpufreq: Remove ready() callback

This isn't used anymore, get rid of it.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

docs/zh_CN: Modify the translator tag and fix the wrong word

Fix a wrong word;

Fix old Original tag;

Remove unnecessary blank lines;

Modify the translator tag to be consistent with the current.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/20210821081800.2205103-1-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

cpufreq: Remove ->resolve_freq()

Commit e3c062360870 ("cpufreq: add cpufreq_driver_resolve_freq()")
introduced this callback, back in 2016, for drivers that provide the
->target() callback.

The kernel hasn't seen a single user of it in the past 5 years and
it is not likely to be used any time soon.

Remove it for now.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: Remove the ->stop_cpu() driver callback

Now that all users of ->stop_cpu() have been migrated to using other
callbacks, drop it from the core.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Minor edits in the subject and changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

docs/zh_CN: add cpu-freq cpu-drivers.rst translation

This patch translates Documention/cpu-freq/cpu-drivers.rst into Chinese.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/20210406070239.19910-3-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>