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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/sh_cmt.c | |
parent | 8d01b66b4f23a9fcf5c6787b27f0be5f8cbae98c (diff) | |
parent | 85e1cd6e769dfc84995270d0a4838021fcb8602d (diff) | |
download | talos-obmc-linux-5e359bf2219d8622eb0931701e45af55db323228.tar.gz talos-obmc-linux-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/sh_cmt.c')
-rw-r--r-- | drivers/clocksource/sh_cmt.c | 65 |
1 files changed, 31 insertions, 34 deletions
diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c index c96de14036a0..ba73a6eb8d66 100644 --- a/drivers/clocksource/sh_cmt.c +++ b/drivers/clocksource/sh_cmt.c @@ -538,7 +538,7 @@ static irqreturn_t sh_cmt_interrupt(int irq, void *dev_id) if (ch->flags & FLAG_CLOCKEVENT) { if (!(ch->flags & FLAG_SKIPEVENT)) { - if (ch->ced.mode == CLOCK_EVT_MODE_ONESHOT) { + if (clockevent_state_oneshot(&ch->ced)) { ch->next_match_value = ch->max_match_value; ch->flags |= FLAG_REPROGRAM; } @@ -554,7 +554,7 @@ static irqreturn_t sh_cmt_interrupt(int irq, void *dev_id) sh_cmt_clock_event_program_verify(ch, 1); if (ch->flags & FLAG_CLOCKEVENT) - if ((ch->ced.mode == CLOCK_EVT_MODE_SHUTDOWN) + if ((clockevent_state_shutdown(&ch->ced)) || (ch->match_value == ch->next_match_value)) ch->flags &= ~FLAG_REPROGRAM; } @@ -726,39 +726,37 @@ static void sh_cmt_clock_event_start(struct sh_cmt_channel *ch, int periodic) sh_cmt_set_next(ch, ch->max_match_value); } -static void sh_cmt_clock_event_mode(enum clock_event_mode mode, - struct clock_event_device *ced) +static int sh_cmt_clock_event_shutdown(struct clock_event_device *ced) +{ + struct sh_cmt_channel *ch = ced_to_sh_cmt(ced); + + sh_cmt_stop(ch, FLAG_CLOCKEVENT); + return 0; +} + +static int sh_cmt_clock_event_set_state(struct clock_event_device *ced, + int periodic) { struct sh_cmt_channel *ch = ced_to_sh_cmt(ced); /* deal with old setting first */ - switch (ced->mode) { - case CLOCK_EVT_MODE_PERIODIC: - case CLOCK_EVT_MODE_ONESHOT: + if (clockevent_state_oneshot(ced) || clockevent_state_periodic(ced)) sh_cmt_stop(ch, FLAG_CLOCKEVENT); - break; - default: - break; - } - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - dev_info(&ch->cmt->pdev->dev, - "ch%u: used for periodic clock events\n", ch->index); - sh_cmt_clock_event_start(ch, 1); - break; - case CLOCK_EVT_MODE_ONESHOT: - dev_info(&ch->cmt->pdev->dev, - "ch%u: used for oneshot clock events\n", ch->index); - sh_cmt_clock_event_start(ch, 0); - break; - case CLOCK_EVT_MODE_SHUTDOWN: - case CLOCK_EVT_MODE_UNUSED: - sh_cmt_stop(ch, FLAG_CLOCKEVENT); - break; - default: - break; - } + dev_info(&ch->cmt->pdev->dev, "ch%u: used for %s clock events\n", + ch->index, periodic ? "periodic" : "oneshot"); + sh_cmt_clock_event_start(ch, periodic); + return 0; +} + +static int sh_cmt_clock_event_set_oneshot(struct clock_event_device *ced) +{ + return sh_cmt_clock_event_set_state(ced, 0); +} + +static int sh_cmt_clock_event_set_periodic(struct clock_event_device *ced) +{ + return sh_cmt_clock_event_set_state(ced, 1); } static int sh_cmt_clock_event_next(unsigned long delta, @@ -766,7 +764,7 @@ static int sh_cmt_clock_event_next(unsigned long delta, { struct sh_cmt_channel *ch = ced_to_sh_cmt(ced); - BUG_ON(ced->mode != CLOCK_EVT_MODE_ONESHOT); + BUG_ON(!clockevent_state_oneshot(ced)); if (likely(ch->flags & FLAG_IRQCONTEXT)) ch->next_match_value = delta - 1; else @@ -820,7 +818,9 @@ static int sh_cmt_register_clockevent(struct sh_cmt_channel *ch, ced->rating = 125; ced->cpumask = cpu_possible_mask; ced->set_next_event = sh_cmt_clock_event_next; - ced->set_mode = sh_cmt_clock_event_mode; + ced->set_state_shutdown = sh_cmt_clock_event_shutdown; + ced->set_state_periodic = sh_cmt_clock_event_set_periodic; + ced->set_state_oneshot = sh_cmt_clock_event_set_oneshot; ced->suspend = sh_cmt_clock_event_suspend; ced->resume = sh_cmt_clock_event_resume; @@ -935,9 +935,6 @@ static int sh_cmt_map_memory(struct sh_cmt_device *cmt) static const struct platform_device_id sh_cmt_id_table[] = { { "sh-cmt-16", (kernel_ulong_t)&sh_cmt_info[SH_CMT_16BIT] }, { "sh-cmt-32", (kernel_ulong_t)&sh_cmt_info[SH_CMT_32BIT] }, - { "sh-cmt-32-fast", (kernel_ulong_t)&sh_cmt_info[SH_CMT_32BIT_FAST] }, - { "sh-cmt-48", (kernel_ulong_t)&sh_cmt_info[SH_CMT_48BIT] }, - { "sh-cmt-48-gen2", (kernel_ulong_t)&sh_cmt_info[SH_CMT_48BIT_GEN2] }, { } }; MODULE_DEVICE_TABLE(platform, sh_cmt_id_table); |