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authorViresh Kumar <viresh.kumar@linaro.org>2015-07-06 16:42:03 +0530
committerRalf Baechle <ralf@linux-mips.org>2015-09-03 12:07:54 +0200
commit59113d93c2b483485cf62f0b057f896e420048c2 (patch)
tree9d1622859b8066d6d81e5cd7e95f8a32c66d9316 /arch/mips/ralink
parent1fed884d5f3d615d56d3b3c07d5ef95f7b49b5f5 (diff)
downloadop-kernel-dev-59113d93c2b483485cf62f0b057f896e420048c2.zip
op-kernel-dev-59113d93c2b483485cf62f0b057f896e420048c2.tar.gz
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>
Diffstat (limited to 'arch/mips/ralink')
-rw-r--r--arch/mips/ralink/cevt-rt3352.c59
1 files changed, 30 insertions, 29 deletions
diff --git a/arch/mips/ralink/cevt-rt3352.c b/arch/mips/ralink/cevt-rt3352.c
index 24bf057..a8e70a9 100644
--- a/arch/mips/ralink/cevt-rt3352.c
+++ b/arch/mips/ralink/cevt-rt3352.c
@@ -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;
-
- 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;
-
- default:
- pr_err("%s: Unhandeled mips clock_mode\n", systick.dev.name);
- break;
- }
+ if (sdev->irq_requested)
+ free_irq(systick.dev.irq, &systick_irqaction);
+ sdev->irq_requested = 0;
+ iowrite32(0, systick.membase + SYSTICK_CONFIG);
+
+ return 0;
+}
+
+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)
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