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MIPS: rt3352: Migrate to new 'set-state' interface 

Migrate ralink 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/10610/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Viresh Kumar 2015-07-06 16:42:03 +05:30 committed by Ralf Baechle
parent 1fed884d5f
commit 59113d93c2
1 changed files with 28 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
arch/mips/ralink/cevt-rt3352.c
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@ -36,8 +36,8 @@ struct systick_device {
int freq_scale;
};
static void systick_set_clock_mode(enum clock_event_mode mode,
struct clock_event_device *evt);
static int systick_set_oneshot(struct clock_event_device *evt);
static int systick_shutdown(struct clock_event_device *evt);
static int systick_next_event(unsigned long delta,
struct clock_event_device *evt)
@ -73,11 +73,12 @@ static struct systick_device systick = {
* cevt-r4k uses 300, make sure systick
* gets used if available
*/
.rating = 310,
.features = CLOCK_EVT_FEAT_ONESHOT,
.set_next_event = systick_next_event,
.set_mode = systick_set_clock_mode,
.event_handler = systick_event_handler,
.rating = 310,
.features = CLOCK_EVT_FEAT_ONESHOT,
.set_next_event = systick_next_event,
.set_state_shutdown = systick_shutdown,
.set_state_oneshot = systick_set_oneshot,
.event_handler = systick_event_handler,
},
};
@ -87,33 +88,33 @@ static struct irqaction systick_irqaction = {
.dev_id = &systick.dev,
};
static void systick_set_clock_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
static int systick_shutdown(struct clock_event_device *evt)
{
struct systick_device *sdev;
sdev = container_of(evt, struct systick_device, dev);
switch (mode) {
case CLOCK_EVT_MODE_ONESHOT:
if (!sdev->irq_requested)
setup_irq(systick.dev.irq, &systick_irqaction);
sdev->irq_requested = 1;
iowrite32(CFG_EXT_STK_EN | CFG_CNT_EN,
systick.membase + SYSTICK_CONFIG);
break;
if (sdev->irq_requested)
free_irq(systick.dev.irq, &systick_irqaction);
sdev->irq_requested = 0;
iowrite32(0, systick.membase + SYSTICK_CONFIG);
case CLOCK_EVT_MODE_SHUTDOWN:
if (sdev->irq_requested)
free_irq(systick.dev.irq, &systick_irqaction);
sdev->irq_requested = 0;
iowrite32(0, systick.membase + SYSTICK_CONFIG);
break;
return 0;
}
default:
pr_err("%s: Unhandeled mips clock_mode\n", systick.dev.name);
break;
}
static int systick_set_oneshot(struct clock_event_device *evt)
{
struct systick_device *sdev;
sdev = container_of(evt, struct systick_device, dev);
if (!sdev->irq_requested)
setup_irq(systick.dev.irq, &systick_irqaction);
sdev->irq_requested = 1;
iowrite32(CFG_EXT_STK_EN | CFG_CNT_EN,
systick.membase + SYSTICK_CONFIG);
return 0;
}
static void __init ralink_systick_init(struct device_node *np)