From: Xiubo Li <Li.Xiubo@freescale.com>
To: <tglx@linutronix.de>, <daniel.lezcano@linaro.org>
Cc: <linux-kernel@vger.kernel.org>, <john.stultz@linaro.org>,
Xiubo Li <Li.Xiubo@freescale.com>
Subject: [PATCH v3 2/2] clocksource: Add BE APIs support for clocksource counter reading.
Date: Tue, 30 Sep 2014 13:03:28 +0800 [thread overview]
Message-ID: <1412053408-21751-3-git-send-email-Li.Xiubo@freescale.com> (raw)
In-Reply-To: <1412053408-21751-1-git-send-email-Li.Xiubo@freescale.com>
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
---
drivers/clocksource/mmio.c | 20 ++++++++++++++++++++
include/linux/clocksource.h | 4 ++++
2 files changed, 24 insertions(+)
diff --git a/drivers/clocksource/mmio.c b/drivers/clocksource/mmio.c
index d3cbf70..d35a407 100644
--- a/drivers/clocksource/mmio.c
+++ b/drivers/clocksource/mmio.c
@@ -20,21 +20,41 @@ static inline struct clocksource_mmio *to_mmio_clksrc(struct clocksource *c)
return container_of(c, struct clocksource_mmio, clksrc);
}
+cycle_t clocksource_mmio_readl_up_be(struct clocksource *c)
+{
+ return (cycle_t)ioread32be(to_mmio_clksrc(c)->reg);
+}
+
cycle_t clocksource_mmio_readl_up(struct clocksource *c)
{
return (cycle_t)ioread32(to_mmio_clksrc(c)->reg);
}
+cycle_t clocksource_mmio_readl_down_be(struct clocksource *c)
+{
+ return ~(cycle_t)ioread32be(to_mmio_clksrc(c)->reg) & c->mask;
+}
+
cycle_t clocksource_mmio_readl_down(struct clocksource *c)
{
return ~(cycle_t)ioread32(to_mmio_clksrc(c)->reg) & c->mask;
}
+cycle_t clocksource_mmio_readw_up_be(struct clocksource *c)
+{
+ return (cycle_t)ioread16be(to_mmio_clksrc(c)->reg);
+}
+
cycle_t clocksource_mmio_readw_up(struct clocksource *c)
{
return (cycle_t)ioread16(to_mmio_clksrc(c)->reg);
}
+cycle_t clocksource_mmio_readw_down_be(struct clocksource *c)
+{
+ return ~(cycle_t)ioread16be(to_mmio_clksrc(c)->reg) & c->mask;
+}
+
cycle_t clocksource_mmio_readw_down(struct clocksource *c)
{
return ~(cycle_t)ioread16(to_mmio_clksrc(c)->reg) & c->mask;
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 653f0e2..931a037 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -327,9 +327,13 @@ static inline void __clocksource_updatefreq_khz(struct clocksource *cs, u32 khz)
extern int timekeeping_notify(struct clocksource *clock);
+extern cycle_t clocksource_mmio_readl_up_be(struct clocksource *);
extern cycle_t clocksource_mmio_readl_up(struct clocksource *);
+extern cycle_t clocksource_mmio_readl_down_be(struct clocksource *);
extern cycle_t clocksource_mmio_readl_down(struct clocksource *);
+extern cycle_t clocksource_mmio_readw_up_be(struct clocksource *);
extern cycle_t clocksource_mmio_readw_up(struct clocksource *);
+extern cycle_t clocksource_mmio_readw_down_be(struct clocksource *);
extern cycle_t clocksource_mmio_readw_down(struct clocksource *);
extern int clocksource_mmio_init(void __iomem *, const char *,
--
2.1.0.27.g96db324
prev parent reply other threads:[~2014-09-30 5:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-30 5:03 [PATCH v3 0/2] clocksource: Add BE APIs support Xiubo Li
2014-09-30 5:03 ` [PATCH v3 1/2] clocksource: Update to the newer memory functions Xiubo Li
2014-09-30 21:20 ` Thomas Gleixner
2014-09-30 5:03 ` Xiubo Li [this message]
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