From: fu.wei@linaro.org (fu.wei at linaro.org)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v22 01/11] clocksource: arm_arch_timer: introduce a wrapper function to get the frequency from mmio.
Date: Wed, 22 Mar 2017 00:31:12 +0800 [thread overview]
Message-ID: <20170321163122.9183-2-fu.wei@linaro.org> (raw)
In-Reply-To: <20170321163122.9183-1-fu.wei@linaro.org>
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
next prev parent reply other threads:[~2017-03-21 16:31 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-21 16:31 [PATCH v22 00/11] acpi, clocksource: add GTDT driver and GTDT support in arm_arch_timer fu.wei at linaro.org
2017-03-21 16:31 ` fu.wei at linaro.org [this message]
2017-03-21 16:31 ` [PATCH v22 02/11] clocksource: arm_arch_timer: separate out device-tree code and remove arch_timer_detect_rate fu.wei at linaro.org
2017-03-28 14:58 ` Daniel Lezcano
2017-03-29 3:41 ` Fu Wei
2017-03-29 5:11 ` Fu Wei
2017-03-29 14:41 ` Daniel Lezcano
2017-03-29 15:01 ` Fu Wei
2017-03-21 16:31 ` [PATCH v22 03/11] clocksource: arm_arch_timer: refactor arch_timer_needs_probing fu.wei at linaro.org
2017-03-28 15:02 ` Daniel Lezcano
2017-03-29 15:24 ` Mark Rutland
2017-03-29 15:32 ` Daniel Lezcano
2017-03-21 16:31 ` [PATCH v22 04/11] clocksource: arm_arch_timer: move arch_timer_needs_of_probing into DT init call fu.wei at linaro.org
2017-03-21 16:31 ` [PATCH v22 05/11] clocksource: arm_arch_timer: introduce some new structs to prepare for GTDT fu.wei at linaro.org
2017-03-21 16:31 ` [PATCH v22 06/11] clocksource: arm_arch_timer: refactor MMIO timer probing fu.wei at linaro.org
2017-03-21 16:31 ` [PATCH v22 07/11] acpi/arm64: Add GTDT table parse driver fu.wei at linaro.org
2017-03-28 11:35 ` Lorenzo Pieralisi
2017-03-29 9:48 ` Fu Wei
2017-03-29 10:21 ` Lorenzo Pieralisi
2017-03-29 10:48 ` Fu Wei
2017-03-29 11:33 ` Lorenzo Pieralisi
2017-03-29 13:42 ` Fu Wei
2017-03-29 16:02 ` Lorenzo Pieralisi
2017-03-29 14:29 ` Fu Wei
2017-03-29 14:31 ` Fu Wei
2017-03-29 15:19 ` Lorenzo Pieralisi
2017-03-21 16:31 ` [PATCH v22 08/11] clocksource: arm_arch_timer: simplify ACPI support code fu.wei at linaro.org
2017-03-21 16:31 ` [PATCH v22 09/11] acpi/arm64: Add memory-mapped timer support in GTDT driver fu.wei at linaro.org
2017-03-29 16:47 ` Lorenzo Pieralisi
2017-03-30 7:54 ` Fu Wei
2017-03-21 16:31 ` [PATCH v22 10/11] clocksource: arm_arch_timer: add GTDT support for memory-mapped timer fu.wei at linaro.org
2017-03-21 16:31 ` [PATCH v22 11/11] acpi/arm64: Add SBSA Generic Watchdog support in GTDT driver fu.wei at linaro.org
2017-03-28 15:41 ` Lorenzo Pieralisi
2017-03-31 8:10 ` Fu Wei
2017-03-31 11:54 ` Lorenzo Pieralisi
2017-03-28 11:32 ` [PATCH v22 00/11] acpi, clocksource: add GTDT driver and GTDT support in arm_arch_timer Jon Masters
2017-03-28 12:34 ` Fu Wei
2017-03-28 13:05 ` Mark Rutland
2017-03-28 14:29 ` Fu Wei
2017-03-28 14:53 ` Mark Rutland
2017-03-31 17:55 ` Fu Wei
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