linux.git/arch/unicore32/kernel/time.c, branch v4.19 Linux kernel source tree unicore32/time: Set ->min_delta_ticks and ->max_delta_ticks 2017-04-14T20:11:22+00:00 Nicolai Stange nicstange@gmail.com 2017-03-30T20:01:13+00:00 16c125b6c2c58a77756f099605724a2b11aea2d1 In preparation for making the clockevents core NTP correction aware, all clockevent device drivers must set ->min_delta_ticks and ->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a clockevent device's rate is going to change dynamically and thus, the ratio of ns to ticks ceases to stay invariant. Make the unicore32 arch's clockevent driver initialize these fields properly. This patch alone doesn't introduce any change in functionality as the clockevents core still looks exclusively at the (untouched) ->min_delta_ns and ->max_delta_ns. As soon as this has changed, a followup patch will purge the initialization of ->min_delta_ns and ->max_delta_ns from this driver. Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: Nicolai Stange <nicstange@gmail.com> Signed-off-by: John Stultz <john.stultz@linaro.org> 
In preparation for making the clockevents core NTP correction aware,
all clockevent device drivers must set ->min_delta_ticks and
->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a
clockevent device's rate is going to change dynamically and thus, the
ratio of ns to ticks ceases to stay invariant.

Make the unicore32 arch's clockevent driver initialize these fields
properly.

This patch alone doesn't introduce any change in functionality as the
clockevents core still looks exclusively at the (untouched) ->min_delta_ns
and ->max_delta_ns. As soon as this has changed, a followup patch will
purge the initialization of ->min_delta_ns and ->max_delta_ns from this
driver.

Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
clocksource: Use a plain u64 instead of cycle_t 2016-12-25T10:04:12+00:00 Thomas Gleixner tglx@linutronix.de 2016-12-21T19:32:01+00:00 a5a1d1c2914b5316924c7893eb683a5420ebd3be There is no point in having an extra type for extra confusion. u64 is unambiguous. Conversion was done with the following coccinelle script: @rem@ @@ -typedef u64 cycle_t; @fix@ typedef cycle_t; @@ -cycle_t +u64 Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> 
There is no point in having an extra type for extra confusion. u64 is
unambiguous.

Conversion was done with the following coccinelle script:

@rem@
@@
-typedef u64 cycle_t;

@fix@
typedef cycle_t;
@@
-cycle_t
+u64

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>
unicore/time: Migrate to new 'set-state' interface 2015-08-10T09:41:06+00:00 Viresh Kumar viresh.kumar@linaro.org 2015-07-16T11:26:32+00:00 3078c8df2c03ebad334e1efe7e0867d8b0cd2764 Migrate unicore driver to the new 'set-state' interface provided by clockevents core, the earlier 'set-mode' interface is marked obsolete now. This also enables us to implement callbacks for new states of clockevent devices, for example: ONESHOT_STOPPED. We weren't doing anything for PERIODIC or RESUME modes and so their callbacks aren't implemented. Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> 
Migrate unicore driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.

This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.

We weren't doing anything for PERIODIC or RESUME modes and so their
callbacks aren't implemented.

Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
unicore32: Remove IRQF_DISABLED 2012-01-10T02:29:41+00:00 Yong Zhang yong.zhang0@gmail.com 2011-09-07T08:10:19+00:00 86abc23ed146522b276f63032574f358bcfe0392 This flag is a NOOP and can be removed now. Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> 
This flag is a NOOP and can be removed now.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
unicore32 io: redefine __REG(x) and re-use readl/writel funcs 2011-03-17T01:19:19+00:00 GuanXuetao gxt@mprc.pku.edu.cn 2011-02-26T13:21:18+00:00 e5abf78b57199a417eb01ff922a5ea6ff9e10b61 -- by advice of Arnd Bergmann Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Reviewed-by: Arnd Bergmann <arnd@arndb.de> 
  -- by advice of Arnd Bergmann

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
unicore32 time.c: change calculate method for clock_event_device 2011-03-17T01:19:16+00:00 GuanXuetao gxt@mprc.pku.edu.cn 2011-02-17T09:50:43+00:00 a913a8234bb812d21bb0f75c2458f9eb941ddf91 apply clockevents_calc_mult_shift() to get rid of shift assignment and mult calculation for osmr0 -- by advice with Thomas Gleixner Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> 
apply clockevents_calc_mult_shift() to get rid of
shift assignment and mult calculation for osmr0
  -- by advice with Thomas Gleixner

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
unicore32 core architecture: timer and time handling 2011-03-17T01:19:10+00:00 GuanXuetao gxt@mprc.pku.edu.cn 2011-01-15T10:19:03+00:00 02b2ee16cc31df2b23d6f6c68a597d947f6c10e8 This patch implements timer and time. RTC and PWM device drivers are also here. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> 
This patch implements timer and time.
RTC and PWM device drivers are also here.

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>