From: Leo Yan <leo.yan@linaro.org>
To: Jonathan Corbet <corbet@lwn.net>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Wei Xu <xuwei5@hisilicon.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Andy Gross <andy.gross@linaro.org>,
David Brown <david.brown@linaro.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@codeaurora.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Guodong Xu <guodong.xu@linaro.org>,
John Stultz <john.stultz@linaro.org>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org,
linux-clk@vger.kernel.org, mike.leach@linaro.org,
Suzuki.Poulose@arm.com, sudeep.holla@arm.com
Cc: Leo Yan <leo.yan@linaro.org>
Subject: [PATCH v5 4/9] coresight: refactor with function of_coresight_get_cpu
Date: Sun, 26 Mar 2017 02:23:12 +0800 [thread overview]
Message-ID: <1490466197-29163-5-git-send-email-leo.yan@linaro.org> (raw)
In-Reply-To: <1490466197-29163-1-git-send-email-leo.yan@linaro.org>
This is refactor to add function of_coresight_get_cpu(), so it's used to
retrieve CPU id for coresight component. Finally can use it as a common
function for multiple places.
Suggested-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
drivers/hwtracing/coresight/of_coresight.c | 43 +++++++++++++++++++-----------
include/linux/coresight.h | 2 ++
2 files changed, 30 insertions(+), 15 deletions(-)
diff --git a/drivers/hwtracing/coresight/of_coresight.c b/drivers/hwtracing/coresight/of_coresight.c
index 1a77280..78d2399 100644
--- a/drivers/hwtracing/coresight/of_coresight.c
+++ b/drivers/hwtracing/coresight/of_coresight.c
@@ -101,15 +101,39 @@ static int of_coresight_alloc_memory(struct device *dev,
return 0;
}
+int of_coresight_get_cpu(struct device_node *node)
+{
+ int cpu;
+ bool found;
+ struct device_node *dn, *np;
+
+ dn = of_parse_phandle(node, "cpu", 0);
+
+ /* Affinity defaults to CPU0 */
+ if (!dn)
+ return 0;
+
+ for_each_possible_cpu(cpu) {
+ np = of_cpu_device_node_get(cpu);
+ found = (dn == np);
+ of_node_put(np);
+ if (found)
+ break;
+ }
+ of_node_put(dn);
+
+ /* Affinity to CPU0 if no cpu nodes are found */
+ return found ? cpu : 0;
+}
+EXPORT_SYMBOL_GPL(of_coresight_get_cpu);
+
struct coresight_platform_data *of_get_coresight_platform_data(
struct device *dev, struct device_node *node)
{
- int i = 0, ret = 0, cpu;
+ int i = 0, ret = 0;
struct coresight_platform_data *pdata;
struct of_endpoint endpoint, rendpoint;
struct device *rdev;
- bool found;
- struct device_node *dn, *np;
struct device_node *ep = NULL;
struct device_node *rparent = NULL;
struct device_node *rport = NULL;
@@ -176,18 +200,7 @@ struct coresight_platform_data *of_get_coresight_platform_data(
} while (ep);
}
- dn = of_parse_phandle(node, "cpu", 0);
- for_each_possible_cpu(cpu) {
- np = of_cpu_device_node_get(cpu);
- found = (dn == np);
- of_node_put(np);
- if (found)
- break;
- }
- of_node_put(dn);
-
- /* Affinity to CPU0 if no cpu nodes are found */
- pdata->cpu = found ? cpu : 0;
+ pdata->cpu = of_coresight_get_cpu(node);
return pdata;
}
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index 2a5982c..bf96678 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -263,9 +263,11 @@ static inline int coresight_timeout(void __iomem *addr, u32 offset,
#endif
#ifdef CONFIG_OF
+extern int of_coresight_get_cpu(struct device_node *node);
extern struct coresight_platform_data *of_get_coresight_platform_data(
struct device *dev, struct device_node *node);
#else
+static inline int of_coresight_get_cpu(struct device_node *node) { return 0; }
static inline struct coresight_platform_data *of_get_coresight_platform_data(
struct device *dev, struct device_node *node) { return NULL; }
#endif
--
2.7.4
next prev parent reply other threads:[~2017-03-25 18:25 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-25 18:23 [PATCH v5 0/9] coresight: enable debug module Leo Yan
2017-03-25 18:23 ` [PATCH v5 1/9] coresight: bindings for CPU " Leo Yan
2017-03-30 22:49 ` Rob Herring
2017-03-31 9:04 ` Suzuki K Poulose
2017-03-25 18:23 ` [PATCH v5 2/9] doc: Add documentation for Coresight CPU debug Leo Yan
2017-03-25 18:23 ` [PATCH v5 3/9] coresight: of_get_coresight_platform_data: Add missing of_node_put Leo Yan
2017-03-25 18:23 ` Leo Yan [this message]
2017-03-31 9:05 ` [PATCH v5 4/9] coresight: refactor with function of_coresight_get_cpu Suzuki K Poulose
2017-03-25 18:23 ` [PATCH v5 5/9] coresight: use const for device_node structures Leo Yan
2017-04-04 21:48 ` Stephen Boyd
2017-03-25 18:23 ` [PATCH v5 6/9] coresight: add support for CPU debug module Leo Yan
2017-03-27 16:34 ` Suzuki K Poulose
2017-03-29 3:07 ` Leo Yan
2017-03-29 9:07 ` Suzuki K Poulose
2017-03-29 10:27 ` Leo Yan
2017-03-29 10:31 ` Suzuki K Poulose
2017-03-29 10:37 ` Leo Yan
2017-03-29 15:50 ` Suzuki K Poulose
2017-03-29 15:17 ` Mike Leach
2017-03-30 1:18 ` Leo Yan
2017-03-29 15:41 ` Mathieu Poirier
2017-03-28 16:50 ` Mathieu Poirier
2017-03-29 1:54 ` Leo Yan
2017-03-29 14:56 ` Mike Leach
2017-03-30 1:03 ` Leo Yan
2017-03-30 9:00 ` Suzuki K Poulose
2017-03-30 13:51 ` Leo Yan
2017-03-30 15:47 ` Sudeep Holla
2017-03-29 16:55 ` Mathieu Poirier
2017-03-30 1:59 ` Leo Yan
2017-03-30 15:46 ` Mathieu Poirier
2017-03-30 16:04 ` Sudeep Holla
2017-03-30 15:56 ` Sudeep Holla
2017-03-31 0:54 ` Leo Yan
2017-03-25 18:23 ` [PATCH v5 7/9] clk: hi6220: add debug APB clock Leo Yan
2017-04-04 21:51 ` Stephen Boyd
2017-04-06 13:59 ` Leo Yan
2017-03-25 18:23 ` [PATCH v5 8/9] arm64: dts: hi6220: register debug module Leo Yan
2017-03-25 18:23 ` [PATCH v5 9/9] arm64: dts: qcom: msm8916: Add debug unit Leo Yan
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