On 06/29/2016 05:25 PM, Arnd Bergmann wrote:
On Saturday, June 25, 2016 6:37:19 PM CEST Wan Zongshun wrote:
This patch is to add nuc970 clocksource driver support.
Signed-off-by: Wan Zongshun <mcuos.com@xxxxxxxxx>
---
.../mach-w90x900/include/mach/nuc970-regs-timer.h | 44 +++++
drivers/clocksource/Kconfig | 8 +
drivers/clocksource/Makefile | 1 +
drivers/clocksource/timer-nuc900.c | 207 +++++++++++++++++++++
4 files changed, 260 insertions(+)
create mode 100644 arch/arm/mach-w90x900/include/mach/nuc970-regs-timer.h
create mode 100644 drivers/clocksource/timer-nuc900.c
diff --git a/arch/arm/mach-w90x900/include/mach/nuc970-regs-timer.h b/arch/arm/mach-w90x900/include/mach/nuc970-regs-timer.h
new file mode 100644
index 0000000..43d7e8b
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/nuc970-regs-timer.h
Please move the contents of the header file into the driver. We try to not
have any new mach/*.h headers.
+
+static unsigned int timer0_load;
+static void __iomem *tmr_base;
+
+static int nuc970_clockevent_set_oneshot(struct clock_event_device *evt)
+{
+ unsigned int val;
+
+ val = __raw_readl(tmr_base + REG_TMR_TCSR0);
+ val &= ~(0x03 << 27);
+
+ val |= (ONESHOT | COUNTEN | INTEN | PRESCALE);
+
+ __raw_writel(val, tmr_base + REG_TMR_TCSR0);
+ return 0;
+}
+
writel() instead of __raw_writel()
Wan Zongshun,
FYI : https://lkml.org/lkml/2015/12/18/422
Not sure it does a noticeable difference on arm926.
Thanks Arnd for the clarification.
-- Daniel
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