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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2015-07-06 14:11:57 +0300 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-09-03 13:07:51 +0300 |
| commit | c88f2fb4d81df3dbafd79d51b2cacefb356d466c (patch) | |
| tree | 9ea6d995925ed24bc36d724edd469953a8ecf493 /arch/mips | |
| parent | 9f95618f9fe5fc902a3d8fecd10c98e482fab6c5 (diff) | |
| download | linux-c88f2fb4d81df3dbafd79d51b2cacefb356d466c.tar.xz | |
MIPS: cevt-gt641xx: Migrate to new 'set-state' interface
Migrate cevt-gt641xx 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.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linaro-kernel@lists.linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Patchwork: https://patchwork.linux-mips.org/patch/10604/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/kernel/cevt-gt641xx.c | 57 |
1 files changed, 39 insertions, 18 deletions
diff --git a/arch/mips/kernel/cevt-gt641xx.c b/arch/mips/kernel/cevt-gt641xx.c index f069460751ab..66040051151d 100644 --- a/arch/mips/kernel/cevt-gt641xx.c +++ b/arch/mips/kernel/cevt-gt641xx.c @@ -64,8 +64,7 @@ static int gt641xx_timer0_set_next_event(unsigned long delta, return 0; } -static void gt641xx_timer0_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) +static int gt641xx_timer0_shutdown(struct clock_event_device *evt) { u32 ctrl; @@ -73,21 +72,39 @@ static void gt641xx_timer0_set_mode(enum clock_event_mode mode, ctrl = GT_READ(GT_TC_CONTROL_OFS); ctrl &= ~(GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK); + GT_WRITE(GT_TC_CONTROL_OFS, ctrl); + + raw_spin_unlock(>641xx_timer_lock); + return 0; +} + +static int gt641xx_timer0_set_oneshot(struct clock_event_device *evt) +{ + u32 ctrl; + + raw_spin_lock(>641xx_timer_lock); + + ctrl = GT_READ(GT_TC_CONTROL_OFS); + ctrl &= ~GT_TC_CONTROL_SELTC0_MSK; + ctrl |= GT_TC_CONTROL_ENTC0_MSK; + GT_WRITE(GT_TC_CONTROL_OFS, ctrl); + + raw_spin_unlock(>641xx_timer_lock); + return 0; +} - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - ctrl |= GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK; - break; - case CLOCK_EVT_MODE_ONESHOT: - ctrl |= GT_TC_CONTROL_ENTC0_MSK; - break; - default: - break; - } +static int gt641xx_timer0_set_periodic(struct clock_event_device *evt) +{ + u32 ctrl; + + raw_spin_lock(>641xx_timer_lock); + ctrl = GT_READ(GT_TC_CONTROL_OFS); + ctrl |= GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK; GT_WRITE(GT_TC_CONTROL_OFS, ctrl); raw_spin_unlock(>641xx_timer_lock); + return 0; } static void gt641xx_timer0_event_handler(struct clock_event_device *dev) @@ -95,12 +112,16 @@ static void gt641xx_timer0_event_handler(struct clock_event_device *dev) } static struct clock_event_device gt641xx_timer0_clockevent = { - .name = "gt641xx-timer0", - .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, - .irq = GT641XX_TIMER0_IRQ, - .set_next_event = gt641xx_timer0_set_next_event, - .set_mode = gt641xx_timer0_set_mode, - .event_handler = gt641xx_timer0_event_handler, + .name = "gt641xx-timer0", + .features = CLOCK_EVT_FEAT_PERIODIC | + CLOCK_EVT_FEAT_ONESHOT, + .irq = GT641XX_TIMER0_IRQ, + .set_next_event = gt641xx_timer0_set_next_event, + .set_state_shutdown = gt641xx_timer0_shutdown, + .set_state_periodic = gt641xx_timer0_set_periodic, + .set_state_oneshot = gt641xx_timer0_set_oneshot, + .tick_resume = gt641xx_timer0_shutdown, + .event_handler = gt641xx_timer0_event_handler, }; static irqreturn_t gt641xx_timer0_interrupt(int irq, void *dev_id) |