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Groups > linux.kernel > #1605795
| From | fu.wei@linaro.org |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v22 01/11] clocksource: arm_arch_timer: introduce a wrapper function to get the frequency from mmio. |
| Date | 2017-03-21 17:40 +0100 |
| Message-ID | <tnuZd-5Ru-63@gated-at.bofh.it> (permalink) |
| References | <tnuZb-5Ru-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Fu Wei <fu.wei@linaro.org>
The patch introduce a new functions: arch_timer_mem_get_cntfrq, and applies
it in arch_timer_detect_rate.
This function will be used for getting the frequency from mmio to prepare
for reworking counter frequency detection.
Signed-off-by: Fu Wei <fu.wei@linaro.org>
---
drivers/clocksource/arm_arch_timer.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 3faed19..843f923 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -555,6 +555,11 @@ static int arch_timer_starting_cpu(unsigned int cpu)
return 0;
}
+static u32 arch_timer_mem_get_cntfrq(void __iomem *cntbase)
+{
+ return readl_relaxed(cntbase + CNTFRQ);
+}
+
static void
arch_timer_detect_rate(void __iomem *cntbase, struct device_node *np)
{
@@ -569,7 +574,7 @@ arch_timer_detect_rate(void __iomem *cntbase, struct device_node *np)
if (!acpi_disabled ||
of_property_read_u32(np, "clock-frequency", &arch_timer_rate)) {
if (cntbase)
- arch_timer_rate = readl_relaxed(cntbase + CNTFRQ);
+ arch_timer_rate = arch_timer_mem_get_cntfrq(cntbase);
else
arch_timer_rate = arch_timer_get_cntfrq();
}
--
2.9.3
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[PATCH v22 00/11] acpi, clocksource: add GTDT driver and GTDT support in arm_arch_timer fu.wei@linaro.org - 2017-03-21 17:40 +0100 [PATCH v22 03/11] clocksource: arm_arch_timer: refactor arch_timer_needs_probing fu.wei@linaro.org - 2017-03-21 17:40 +0100 [PATCH v22 02/11] clocksource: arm_arch_timer: separate out device-tree code and remove arch_timer_detect_rate fu.wei@linaro.org - 2017-03-21 17:40 +0100 [PATCH v22 04/11] clocksource: arm_arch_timer: move arch_timer_needs_of_probing into DT init call fu.wei@linaro.org - 2017-03-21 17:40 +0100 [PATCH v22 01/11] clocksource: arm_arch_timer: introduce a wrapper function to get the frequency from mmio. fu.wei@linaro.org - 2017-03-21 17:40 +0100 [PATCH v22 05/11] clocksource: arm_arch_timer: introduce some new structs to prepare for GTDT fu.wei@linaro.org - 2017-03-21 17:40 +0100 [PATCH v22 10/11] clocksource: arm_arch_timer: add GTDT support for memory-mapped timer fu.wei@linaro.org - 2017-03-21 17:50 +0100 [PATCH v22 11/11] acpi/arm64: Add SBSA Generic Watchdog support in GTDT driver fu.wei@linaro.org - 2017-03-21 17:50 +0100 [PATCH v22 09/11] acpi/arm64: Add memory-mapped timer support in GTDT driver fu.wei@linaro.org - 2017-03-21 17:50 +0100 [PATCH v22 07/11] acpi/arm64: Add GTDT table parse driver fu.wei@linaro.org - 2017-03-21 17:50 +0100 [PATCH v22 08/11] clocksource: arm_arch_timer: simplify ACPI support code. fu.wei@linaro.org - 2017-03-21 17:50 +0100
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