From d199da550da30e0946a7554f8a93ef75f66f8005 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 6 Jul 2015 16:42:00 +0530 Subject: [PATCH] MIPS: cevt-txx9: Migrate to new 'set-state' interface Migrate cevt-txx9 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: Deng-Cheng Zhu Cc: Daniel Lezcano Cc: linux-mips@linux-mips.org Cc: linaro-kernel@lists.linaro.org Cc: Thomas Gleixner Cc: Viresh Kumar Patchwork: https://patchwork.linux-mips.org/patch/10607/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/cevt-txx9.c | 81 ++++++++++++++++++++++++++++---------------- 1 file changed, 51 insertions(+), 30 deletions(-) diff --git a/arch/mips/kernel/cevt-txx9.c b/arch/mips/kernel/cevt-txx9.c index 7239324..537eefd 100644 --- a/arch/mips/kernel/cevt-txx9.c +++ b/arch/mips/kernel/cevt-txx9.c @@ -85,36 +85,54 @@ static void txx9tmr_stop_and_clear(struct txx9_tmr_reg __iomem *tmrptr) __raw_writel(0, &tmrptr->tisr); } -static void txx9tmr_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) +static int txx9tmr_set_state_periodic(struct clock_event_device *evt) { struct txx9_clock_event_device *txx9_cd = container_of(evt, struct txx9_clock_event_device, cd); struct txx9_tmr_reg __iomem *tmrptr = txx9_cd->tmrptr; txx9tmr_stop_and_clear(tmrptr); - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - __raw_writel(TXx9_TMITMR_TIIE | TXx9_TMITMR_TZCE, - &tmrptr->itmr); - /* start timer */ - __raw_writel(((u64)(NSEC_PER_SEC / HZ) * evt->mult) >> - evt->shift, - &tmrptr->cpra); - __raw_writel(TCR_BASE | TXx9_TMTCR_TCE, &tmrptr->tcr); - break; - case CLOCK_EVT_MODE_SHUTDOWN: - case CLOCK_EVT_MODE_UNUSED: - __raw_writel(0, &tmrptr->itmr); - break; - case CLOCK_EVT_MODE_ONESHOT: - __raw_writel(TXx9_TMITMR_TIIE, &tmrptr->itmr); - break; - case CLOCK_EVT_MODE_RESUME: - __raw_writel(TIMER_CCD, &tmrptr->ccdr); - __raw_writel(0, &tmrptr->itmr); - break; - } + + __raw_writel(TXx9_TMITMR_TIIE | TXx9_TMITMR_TZCE, &tmrptr->itmr); + /* start timer */ + __raw_writel(((u64)(NSEC_PER_SEC / HZ) * evt->mult) >> evt->shift, + &tmrptr->cpra); + __raw_writel(TCR_BASE | TXx9_TMTCR_TCE, &tmrptr->tcr); + return 0; +} + +static int txx9tmr_set_state_oneshot(struct clock_event_device *evt) +{ + struct txx9_clock_event_device *txx9_cd = + container_of(evt, struct txx9_clock_event_device, cd); + struct txx9_tmr_reg __iomem *tmrptr = txx9_cd->tmrptr; + + txx9tmr_stop_and_clear(tmrptr); + __raw_writel(TXx9_TMITMR_TIIE, &tmrptr->itmr); + return 0; +} + +static int txx9tmr_set_state_shutdown(struct clock_event_device *evt) +{ + struct txx9_clock_event_device *txx9_cd = + container_of(evt, struct txx9_clock_event_device, cd); + struct txx9_tmr_reg __iomem *tmrptr = txx9_cd->tmrptr; + + txx9tmr_stop_and_clear(tmrptr); + __raw_writel(0, &tmrptr->itmr); + return 0; +} + +static int txx9tmr_tick_resume(struct clock_event_device *evt) +{ + struct txx9_clock_event_device *txx9_cd = + container_of(evt, struct txx9_clock_event_device, cd); + struct txx9_tmr_reg __iomem *tmrptr = txx9_cd->tmrptr; + + txx9tmr_stop_and_clear(tmrptr); + __raw_writel(TIMER_CCD, &tmrptr->ccdr); + __raw_writel(0, &tmrptr->itmr); + return 0; } static int txx9tmr_set_next_event(unsigned long delta, @@ -133,12 +151,15 @@ static int txx9tmr_set_next_event(unsigned long delta, static struct txx9_clock_event_device txx9_clock_event_device = { .cd = { - .name = "TXx9", - .features = CLOCK_EVT_FEAT_PERIODIC | - CLOCK_EVT_FEAT_ONESHOT, - .rating = 200, - .set_mode = txx9tmr_set_mode, - .set_next_event = txx9tmr_set_next_event, + .name = "TXx9", + .features = CLOCK_EVT_FEAT_PERIODIC | + CLOCK_EVT_FEAT_ONESHOT, + .rating = 200, + .set_state_shutdown = txx9tmr_set_state_shutdown, + .set_state_periodic = txx9tmr_set_state_periodic, + .set_state_oneshot = txx9tmr_set_state_oneshot, + .tick_resume = txx9tmr_tick_resume, + .set_next_event = txx9tmr_set_next_event, }, }; -- 2.7.4