From: Tingwei Zhang <tingwei@codeaurora.org>
To: Mathieu Poirier <mathieu.poirier@linaro.org>,
Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: tsoni@codeaurora.org,
Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
Kim Phillips <kim.phillips@arm.com>,
Mao Jinlong <jinlmao@codeaurora.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
coresight@lists.linaro.org, Randy Dunlap <rdunlap@infradead.org>,
Mian Yousaf Kaukab <ykaukab@suse.de>,
Russell King <linux@armlinux.org.uk>,
Tingwei Zhang <tingwei@codeaurora.org>,
Leo Yan <leo.yan@linaro.org>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v1 16/21] coresight: allow cti to be built as a module
Date: Wed, 1 Jul 2020 15:14:22 +0800 [thread overview]
Message-ID: <20200701071427.10477-17-tingwei@codeaurora.org> (raw)
In-Reply-To: <20200701071427.10477-1-tingwei@codeaurora.org>
Allow to build coresight-cti as a module, for ease of development.
- Kconfig becomes a tristate, to allow =m
- append -core to source file name to allow module to
be called coresight-cti by the Makefile
- add an cti_remove function, for module unload
- add a MODULE_DEVICE_TABLE for autoloading on boot
Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>
---
drivers/hwtracing/coresight/Kconfig | 5 ++++-
drivers/hwtracing/coresight/Makefile | 4 ++--
.../{coresight-cti.c => coresight-cti-core.c} | 14 ++++++++++++++
drivers/hwtracing/coresight/coresight-platform.c | 1 +
drivers/hwtracing/coresight/coresight.c | 1 +
5 files changed, 22 insertions(+), 3 deletions(-)
rename drivers/hwtracing/coresight/{coresight-cti.c => coresight-cti-core.c} (98%)
diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig
index f31778dd0b5d..b04aae2ceecc 100644
--- a/drivers/hwtracing/coresight/Kconfig
+++ b/drivers/hwtracing/coresight/Kconfig
@@ -136,7 +136,7 @@ config CORESIGHT_CPU_DEBUG
module will be called coresight-cpu-debug.
config CORESIGHT_CTI
- bool "CoreSight Cross Trigger Interface (CTI) driver"
+ tristate "CoreSight Cross Trigger Interface (CTI) driver"
depends on ARM || ARM64
help
This driver provides support for CoreSight CTI and CTM components.
@@ -147,6 +147,9 @@ config CORESIGHT_CTI
halt compared to disabling sources and sinks normally in driver
software.
+ To compile this driver as a module, choose M here: the
+ module will be called coresight-cti.
+
config CORESIGHT_CTI_INTEGRATION_REGS
bool "Access CTI CoreSight Integration Registers"
depends on CORESIGHT_CTI
diff --git a/drivers/hwtracing/coresight/Makefile b/drivers/hwtracing/coresight/Makefile
index 8a7d7ddcce24..c65a153b1e1b 100644
--- a/drivers/hwtracing/coresight/Makefile
+++ b/drivers/hwtracing/coresight/Makefile
@@ -18,6 +18,6 @@ coresight-etm4x-y := coresight-etm4x-core.o coresight-etm4x-sysfs.o
obj-$(CONFIG_CORESIGHT_STM) += coresight-stm.o
obj-$(CONFIG_CORESIGHT_CPU_DEBUG) += coresight-cpu-debug.o
obj-$(CONFIG_CORESIGHT_CATU) += coresight-catu.o
-obj-$(CONFIG_CORESIGHT_CTI) += coresight-cti.o \
- coresight-cti-platform.o \
+obj-$(CONFIG_CORESIGHT_CTI) += coresight-cti.o
+coresight-cti-y := coresight-cti-core.o coresight-cti-platform.o \
coresight-cti-sysfs.o
diff --git a/drivers/hwtracing/coresight/coresight-cti.c b/drivers/hwtracing/coresight/coresight-cti-core.c
similarity index 98%
rename from drivers/hwtracing/coresight/coresight-cti.c
rename to drivers/hwtracing/coresight/coresight-cti-core.c
index 2829286daed9..b31839682c9e 100644
--- a/drivers/hwtracing/coresight/coresight-cti.c
+++ b/drivers/hwtracing/coresight/coresight-cti-core.c
@@ -618,6 +618,14 @@ static void cti_device_release(struct device *dev)
if (drvdata->csdev_release)
drvdata->csdev_release(dev);
}
+static int __exit cti_remove(struct amba_device *adev)
+{
+ struct cti_drvdata *drvdata = dev_get_drvdata(&adev->dev);
+
+ coresight_unregister(drvdata->csdev);
+
+ return 0;
+}
static int cti_probe(struct amba_device *adev, const struct amba_id *id)
{
@@ -739,6 +747,7 @@ static const struct amba_id cti_ids[] = {
CS_AMBA_UCI_ID(0x000bb9ed, uci_id_cti), /* Coresight CTI (SoC 600) */
{ 0, 0},
};
+MODULE_DEVICE_TABLE(amba, cti_ids);
static struct amba_driver cti_driver = {
.drv = {
@@ -747,6 +756,7 @@ static struct amba_driver cti_driver = {
.suppress_bind_attrs = true,
},
.probe = cti_probe,
+ .remove = cti_remove,
.id_table = cti_ids,
};
@@ -769,3 +779,7 @@ static void __exit cti_exit(void)
module_init(cti_init);
module_exit(cti_exit);
+
+MODULE_AUTHOR("Mike Leach <mike.leach@linaro.org>");
+MODULE_DESCRIPTION("Arm CoreSight Funnel Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c
index 43418a2126ff..44f24683f089 100644
--- a/drivers/hwtracing/coresight/coresight-platform.c
+++ b/drivers/hwtracing/coresight/coresight-platform.c
@@ -76,6 +76,7 @@ coresight_find_csdev_by_fwnode(struct fwnode_handle *r_fwnode)
}
return csdev;
}
+EXPORT_SYMBOL_GPL(coresight_find_csdev_by_fwnode);
#ifdef CONFIG_OF
static inline bool of_coresight_legacy_ep_is_input(struct device_node *ep)
diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
index bf8c41901016..cf7079f4b99c 100644
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -273,6 +273,7 @@ void coresight_set_assoc_ectdev_mutex(struct coresight_device *csdev,
csdev->ect_dev = ect_csdev;
mutex_unlock(&coresight_mutex);
}
+EXPORT_SYMBOL_GPL(coresight_set_assoc_ectdev_mutex);
static int coresight_enable_sink(struct coresight_device *csdev,
u32 mode, void *data)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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next prev parent reply other threads:[~2020-07-01 7:19 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-01 7:14 [PATCH v1 00/21] coresight: allow to build coresight as modules Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 01/21] coresight: cpu_debug: add module name in Kconfig Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 02/21] coresight: cpu_debug: define MODULE_DEVICE_TABLE Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 03/21] coresight: use IS_ENABLED for CONFIGs that may be modules Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 04/21] coresight: add coresight prefix to barrier_pkt Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 05/21] coresight: export global symbols Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 06/21] Allow to build coresight-stm as a module, for ease of development Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 07/21] coresight: allow etm3x to be built as a module Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 08/21] coresight: allow etm4x " Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 09/21] coresight: allow etb " Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 10/21] coresight: allow tpiu " Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 11/21] coresight: allow tmc " Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 12/21] coresight: remove multiple init calls from funnel driver Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 13/21] coresight: remove multiple init calls from replicator driver Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 14/21] coresight: allow funnel and replicator drivers to be built as modules Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 15/21] coresight: cti: add function to register cti associate ops Tingwei Zhang
2020-07-01 7:14 ` Tingwei Zhang [this message]
2020-07-01 7:14 ` [PATCH v1 17/21] coresight: tmc-etr: add function to register catu ops Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 18/21] coresight: allow catu drivers to be built as modules Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 19/21] coresight: disable trace path with device being removed Tingwei Zhang
2020-07-13 22:11 ` Mathieu Poirier
2020-07-14 1:10 ` tingwei
2020-07-01 7:14 ` [PATCH v1 20/21] coresight: allow the coresight core driver to be built as a module Tingwei Zhang
2020-07-01 7:14 ` [PATCH v1 21/21] coresight: perf: clean up perf event on device unregister path Tingwei Zhang
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