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

Migrate sni 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/10612/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Viresh Kumar 2015-07-06 16:42:05 +05:30 committed by Ralf Baechle
parent 0c16240ab0
commit 397d08b006
1 changed files with 19 additions and 30 deletions
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49
arch/mips/sni/time.c
View File

@ -14,44 +14,33 @@
#define SNI_COUNTER2_DIV 64
#define SNI_COUNTER0_DIV ((SNI_CLOCK_TICK_RATE / SNI_COUNTER2_DIV) / HZ)
static void a20r_set_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
static int a20r_set_periodic(struct clock_event_device *evt)
{
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 12) = 0x34;
wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 0) = SNI_COUNTER0_DIV;
wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 0) = SNI_COUNTER0_DIV >> 8;
wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 12) = 0x34;
wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 0) = SNI_COUNTER0_DIV;
wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 0) = SNI_COUNTER0_DIV >> 8;
wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 12) = 0xb4;
wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 8) = SNI_COUNTER2_DIV;
wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 8) = SNI_COUNTER2_DIV >> 8;
wmb();
break;
case CLOCK_EVT_MODE_ONESHOT:
case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_SHUTDOWN:
break;
case CLOCK_EVT_MODE_RESUME:
break;
}
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 12) = 0xb4;
wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 8) = SNI_COUNTER2_DIV;
wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 8) = SNI_COUNTER2_DIV >> 8;
wmb();
return 0;
}
static struct clock_event_device a20r_clockevent_device = {
.name = "a20r-timer",
.features = CLOCK_EVT_FEAT_PERIODIC,
.name = "a20r-timer",
.features = CLOCK_EVT_FEAT_PERIODIC,
/* .mult, .shift, .max_delta_ns and .min_delta_ns left uninitialized */
.rating = 300,
.irq = SNI_A20R_IRQ_TIMER,
.set_mode = a20r_set_mode,
.rating = 300,
.irq = SNI_A20R_IRQ_TIMER,
.set_state_periodic = a20r_set_periodic,
};
static irqreturn_t a20r_interrupt(int irq, void *dev_id)