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authorViresh Kumar <viresh.kumar@linaro.org>2015-07-06 16:42:05 +0530
committerRalf Baechle <ralf@linux-mips.org>2015-09-03 12:07:54 +0200
commit397d08b006fc8bbb087615214400b86b64f8fe50 (patch)
tree9cb36e77a73ef1a46508a5b298ab43ef4f5b7450 /arch
parent0c16240ab07ff8a0e611f676f86a92a4b513d15d (diff)
downloadlinux-397d08b006fc8bbb087615214400b86b64f8fe50.tar.bz2
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/sni/time.c49
1 files changed, 19 insertions, 30 deletions
diff --git a/arch/mips/sni/time.c b/arch/mips/sni/time.c
index cf8ec568b9df..fb4b3520cdc6 100644
--- a/arch/mips/sni/time.c
+++ b/arch/mips/sni/time.c
@@ -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) = 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();
+ *(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();
- 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)