From 59113d93c2b483485cf62f0b057f896e420048c2 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 6 Jul 2015 16:42:03 +0530 Subject: [PATCH] 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 Cc: Daniel Lezcano Cc: linux-mips@linux-mips.org Cc: linaro-kernel@lists.linaro.org Cc: Thomas Gleixner Patchwork: https://patchwork.linux-mips.org/patch/10610/ Signed-off-by: Ralf Baechle --- arch/mips/ralink/cevt-rt3352.c | 59 +++++++++++++++++++++--------------------- 1 file 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) -- 2.7.4