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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-01 14:04:50 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-01 14:04:50 -0700 |
commit | 5e359bf2219d8622eb0931701e45af55db323228 (patch) | |
tree | e47677ae0896c66a54c65b3221050eb0e9f23b81 /drivers/clocksource/cadence_ttc_timer.c | |
parent | 8d01b66b4f23a9fcf5c6787b27f0be5f8cbae98c (diff) | |
parent | 85e1cd6e769dfc84995270d0a4838021fcb8602d (diff) | |
download | linux-stable-5e359bf2219d8622eb0931701e45af55db323228.tar.gz linux-stable-5e359bf2219d8622eb0931701e45af55db323228.tar.bz2 linux-stable-5e359bf2219d8622eb0931701e45af55db323228.zip |
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"Rather large, but nothing exiting:
- new range check for settimeofday() to prevent that boot time
becomes negative.
- fix for file time rounding
- a few simplifications of the hrtimer code
- fix for the proc/timerlist code so the output of clock realtime
timers is accurate
- more y2038 work
- tree wide conversion of clockevent drivers to the new callbacks"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (88 commits)
hrtimer: Handle failure of tick_init_highres() gracefully
hrtimer: Unconfuse switch_hrtimer_base() a bit
hrtimer: Simplify get_target_base() by returning current base
hrtimer: Drop return code of hrtimer_switch_to_hres()
time: Introduce timespec64_to_jiffies()/jiffies_to_timespec64()
time: Introduce current_kernel_time64()
time: Introduce struct itimerspec64
time: Add the common weak version of update_persistent_clock()
time: Always make sure wall_to_monotonic isn't positive
time: Fix nanosecond file time rounding in timespec_trunc()
timer_list: Add the base offset so remaining nsecs are accurate for non monotonic timers
cris/time: Migrate to new 'set-state' interface
kernel: broadcast-hrtimer: Migrate to new 'set-state' interface
xtensa/time: Migrate to new 'set-state' interface
unicore/time: Migrate to new 'set-state' interface
um/time: Migrate to new 'set-state' interface
sparc/time: Migrate to new 'set-state' interface
sh/localtimer: Migrate to new 'set-state' interface
score/time: Migrate to new 'set-state' interface
s390/time: Migrate to new 'set-state' interface
...
Diffstat (limited to 'drivers/clocksource/cadence_ttc_timer.c')
-rw-r--r-- | drivers/clocksource/cadence_ttc_timer.c | 59 |
1 files changed, 32 insertions, 27 deletions
diff --git a/drivers/clocksource/cadence_ttc_timer.c b/drivers/clocksource/cadence_ttc_timer.c index 5ea91e3818d0..9be6018bd2b8 100644 --- a/drivers/clocksource/cadence_ttc_timer.c +++ b/drivers/clocksource/cadence_ttc_timer.c @@ -190,40 +190,42 @@ static int ttc_set_next_event(unsigned long cycles, } /** - * ttc_set_mode - Sets the mode of timer + * ttc_set_{shutdown|oneshot|periodic} - Sets the state of timer * - * @mode: Mode to be set * @evt: Address of clock event instance **/ -static void ttc_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) +static int ttc_shutdown(struct clock_event_device *evt) { struct ttc_timer_clockevent *ttce = to_ttc_timer_clkevent(evt); struct ttc_timer *timer = &ttce->ttc; u32 ctrl_reg; - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - ttc_set_interval(timer, DIV_ROUND_CLOSEST(ttce->ttc.freq, - PRESCALE * HZ)); - break; - case CLOCK_EVT_MODE_ONESHOT: - case CLOCK_EVT_MODE_UNUSED: - case CLOCK_EVT_MODE_SHUTDOWN: - ctrl_reg = readl_relaxed(timer->base_addr + - TTC_CNT_CNTRL_OFFSET); - ctrl_reg |= TTC_CNT_CNTRL_DISABLE_MASK; - writel_relaxed(ctrl_reg, - timer->base_addr + TTC_CNT_CNTRL_OFFSET); - break; - case CLOCK_EVT_MODE_RESUME: - ctrl_reg = readl_relaxed(timer->base_addr + - TTC_CNT_CNTRL_OFFSET); - ctrl_reg &= ~TTC_CNT_CNTRL_DISABLE_MASK; - writel_relaxed(ctrl_reg, - timer->base_addr + TTC_CNT_CNTRL_OFFSET); - break; - } + ctrl_reg = readl_relaxed(timer->base_addr + TTC_CNT_CNTRL_OFFSET); + ctrl_reg |= TTC_CNT_CNTRL_DISABLE_MASK; + writel_relaxed(ctrl_reg, timer->base_addr + TTC_CNT_CNTRL_OFFSET); + return 0; +} + +static int ttc_set_periodic(struct clock_event_device *evt) +{ + struct ttc_timer_clockevent *ttce = to_ttc_timer_clkevent(evt); + struct ttc_timer *timer = &ttce->ttc; + + ttc_set_interval(timer, + DIV_ROUND_CLOSEST(ttce->ttc.freq, PRESCALE * HZ)); + return 0; +} + +static int ttc_resume(struct clock_event_device *evt) +{ + struct ttc_timer_clockevent *ttce = to_ttc_timer_clkevent(evt); + struct ttc_timer *timer = &ttce->ttc; + u32 ctrl_reg; + + ctrl_reg = readl_relaxed(timer->base_addr + TTC_CNT_CNTRL_OFFSET); + ctrl_reg &= ~TTC_CNT_CNTRL_DISABLE_MASK; + writel_relaxed(ctrl_reg, timer->base_addr + TTC_CNT_CNTRL_OFFSET); + return 0; } static int ttc_rate_change_clocksource_cb(struct notifier_block *nb, @@ -429,7 +431,10 @@ static void __init ttc_setup_clockevent(struct clk *clk, ttcce->ce.name = "ttc_clockevent"; ttcce->ce.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT; ttcce->ce.set_next_event = ttc_set_next_event; - ttcce->ce.set_mode = ttc_set_mode; + ttcce->ce.set_state_shutdown = ttc_shutdown; + ttcce->ce.set_state_periodic = ttc_set_periodic; + ttcce->ce.set_state_oneshot = ttc_shutdown; + ttcce->ce.tick_resume = ttc_resume; ttcce->ce.rating = 200; ttcce->ce.irq = irq; ttcce->ce.cpumask = cpu_possible_mask; |