| Message ID | 54f346e663f605e2f078a3114de85ba281d1e6d0.1433768426.git.viresh.kumar@linaro.org |
|---|---|
| State | New |
| Headers | show |
On 06/08/2015 03:40 PM, Viresh Kumar wrote: > Migrate arm_global_timer driver to the new 'set-state' interface > provided by the 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. > > Cc: Srinivas Kandagatla <srinivas.kandagatla@gmail.com> > Cc: Maxime Coquelin <maxime.coquelin@st.com> > Cc: Patrice Chotard <patrice.chotard@st.com> > Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> > --- > drivers/clocksource/arm_global_timer.c | 37 ++++++++++++++++------------------ Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> > - clk->set_mode = gt_clockevent_set_mode; > + clk->set_state_shutdown = gt_clockevent_shutdown; > + clk->set_state_periodic = gt_clockevent_set_periodic; > + clk->set_state_oneshot = gt_clockevent_shutdown; nit: it sounds weird to use the same function as the purpose of the patch is use the new API which is to ventilate those functions (anyway ...) > clk->set_next_event = gt_clockevent_set_next_event; > clk->cpumask = cpumask_of(cpu); > clk->rating = 300; > @@ -184,7 +181,7 @@ static int gt_clockevents_init(struct clock_event_device *clk) > > static void gt_clockevents_stop(struct clock_event_device *clk) > { > - gt_clockevent_set_mode(CLOCK_EVT_MODE_UNUSED, clk); > + gt_clockevent_shutdown(clk); > disable_percpu_irq(clk->irq); > }
On 11-06-15, 16:49, Daniel Lezcano wrote: > Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Thanks :) > >- clk->set_mode = gt_clockevent_set_mode; > >+ clk->set_state_shutdown = gt_clockevent_shutdown; > >+ clk->set_state_periodic = gt_clockevent_set_periodic; > >+ clk->set_state_oneshot = gt_clockevent_shutdown; > > nit: it sounds weird to use the same function as the purpose of the > patch is use the new API which is to ventilate those functions > (anyway ...) Hmm, but there is no point creating two routines to do exactly the same thing. And this is making it evident that we actually shutdown the device in oneshot-state request. And enable it only when the next event is programmed.
On 06/11/2015 04:56 PM, Viresh Kumar wrote: > On 11-06-15, 16:49, Daniel Lezcano wrote: >> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> > > Thanks :) > >>> - clk->set_mode = gt_clockevent_set_mode; >>> + clk->set_state_shutdown = gt_clockevent_shutdown; >>> + clk->set_state_periodic = gt_clockevent_set_periodic; >>> + clk->set_state_oneshot = gt_clockevent_shutdown; >> >> nit: it sounds weird to use the same function as the purpose of the >> patch is use the new API which is to ventilate those functions >> (anyway ...) > > Hmm, but there is no point creating two routines to do exactly the > same thing. And this is making it evident that we actually shutdown > the device in oneshot-state request. And enable it only when the next > event is programmed. Yes, this is really a detail.
On 08/06/15 14:40, Viresh Kumar wrote: > Migrate arm_global_timer driver to the new 'set-state' interface > provided by the 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. > > Cc: Srinivas Kandagatla <srinivas.kandagatla@gmail.com> > Cc: Maxime Coquelin <maxime.coquelin@st.com> > Cc: Patrice Chotard <patrice.chotard@st.com> > Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> > --- > drivers/clocksource/arm_global_timer.c | 37 ++++++++++++++++------------------ > 1 file changed, 17 insertions(+), 20 deletions(-) > > diff --git a/drivers/clocksource/arm_global_timer.c b/drivers/clocksource/arm_global_timer.c > index e6833771a716..29ea50ac366a 100644 > --- a/drivers/clocksource/arm_global_timer.c > +++ b/drivers/clocksource/arm_global_timer.c > Hi Viresh, Thanks for the patch, Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> --srini -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
On 12-06-15, 09:39, Srinivas Kandagatla wrote:
> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Thanks Srinivas, but you gave this for the V1 version. Can you please
do that again for V2 ?
diff --git a/drivers/clocksource/arm_global_timer.c b/drivers/clocksource/arm_global_timer.c index e6833771a716..29ea50ac366a 100644 --- a/drivers/clocksource/arm_global_timer.c +++ b/drivers/clocksource/arm_global_timer.c @@ -107,26 +107,21 @@ static void gt_compare_set(unsigned long delta, int periodic) writel(ctrl, gt_base + GT_CONTROL); } -static void gt_clockevent_set_mode(enum clock_event_mode mode, - struct clock_event_device *clk) +static int gt_clockevent_shutdown(struct clock_event_device *evt) { unsigned long ctrl; - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - gt_compare_set(DIV_ROUND_CLOSEST(gt_clk_rate, HZ), 1); - break; - case CLOCK_EVT_MODE_ONESHOT: - case CLOCK_EVT_MODE_UNUSED: - case CLOCK_EVT_MODE_SHUTDOWN: - ctrl = readl(gt_base + GT_CONTROL); - ctrl &= ~(GT_CONTROL_COMP_ENABLE | - GT_CONTROL_IRQ_ENABLE | GT_CONTROL_AUTO_INC); - writel(ctrl, gt_base + GT_CONTROL); - break; - default: - break; - } + ctrl = readl(gt_base + GT_CONTROL); + ctrl &= ~(GT_CONTROL_COMP_ENABLE | GT_CONTROL_IRQ_ENABLE | + GT_CONTROL_AUTO_INC); + writel(ctrl, gt_base + GT_CONTROL); + return 0; +} + +static int gt_clockevent_set_periodic(struct clock_event_device *evt) +{ + gt_compare_set(DIV_ROUND_CLOSEST(gt_clk_rate, HZ), 1); + return 0; } static int gt_clockevent_set_next_event(unsigned long evt, @@ -155,7 +150,7 @@ static irqreturn_t gt_clockevent_interrupt(int irq, void *dev_id) * the Global Timer flag _after_ having incremented * the Comparator register value to a higher value. */ - if (evt->mode == CLOCK_EVT_MODE_ONESHOT) + if (clockevent_state_oneshot(evt)) gt_compare_set(ULONG_MAX, 0); writel_relaxed(GT_INT_STATUS_EVENT_FLAG, gt_base + GT_INT_STATUS); @@ -171,7 +166,9 @@ static int gt_clockevents_init(struct clock_event_device *clk) clk->name = "arm_global_timer"; clk->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERCPU; - clk->set_mode = gt_clockevent_set_mode; + clk->set_state_shutdown = gt_clockevent_shutdown; + clk->set_state_periodic = gt_clockevent_set_periodic; + clk->set_state_oneshot = gt_clockevent_shutdown; clk->set_next_event = gt_clockevent_set_next_event; clk->cpumask = cpumask_of(cpu); clk->rating = 300; @@ -184,7 +181,7 @@ static int gt_clockevents_init(struct clock_event_device *clk) static void gt_clockevents_stop(struct clock_event_device *clk) { - gt_clockevent_set_mode(CLOCK_EVT_MODE_UNUSED, clk); + gt_clockevent_shutdown(clk); disable_percpu_irq(clk->irq); }
Migrate arm_global_timer driver to the new 'set-state' interface provided by the 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. Cc: Srinivas Kandagatla <srinivas.kandagatla@gmail.com> Cc: Maxime Coquelin <maxime.coquelin@st.com> Cc: Patrice Chotard <patrice.chotard@st.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- drivers/clocksource/arm_global_timer.c | 37 ++++++++++++++++------------------ 1 file changed, 17 insertions(+), 20 deletions(-)