From: Tingwei Zhang <tingwei@codeaurora.org>
To: Mathieu Poirier <mathieu.poirier@linaro.org>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Mike Leach <mike.leach@linaro.org>
Cc: tsoni@codeaurora.org,
Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
Kim Phillips <kim.phillips@arm.com>,
Mao Jinlong <jinlmao@codeaurora.org>,
Suzuki K Poulose <Suzuki.Poulose@arm.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 v4 12/20] coresight: allow tmc to be built as a module
Date: Thu, 23 Jul 2020 12:27:54 +0800 [thread overview]
Message-ID: <20200723042802.22511-13-tingwei@codeaurora.org> (raw)
In-Reply-To: <20200723042802.22511-1-tingwei@codeaurora.org>
From: Kim Phillips <kim.phillips@arm.com>
Allow to build coresight-tmc 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-tmc by the Makefile
- add an tmc_remove function, for module unload
- add a MODULE_DEVICE_TABLE for autoloading on boot
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Suzuki K Poulose <Suzuki.Poulose@arm.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>
---
drivers/hwtracing/coresight/Kconfig | 6 +++++-
drivers/hwtracing/coresight/Makefile | 6 +++---
.../{coresight-tmc.c => coresight-tmc-core.c} | 19 ++++++++++++++++++-
3 files changed, 26 insertions(+), 5 deletions(-)
rename drivers/hwtracing/coresight/{coresight-tmc.c => coresight-tmc-core.c} (96%)
diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig
index 8fd9887fb03b..fc48ae086746 100644
--- a/drivers/hwtracing/coresight/Kconfig
+++ b/drivers/hwtracing/coresight/Kconfig
@@ -25,7 +25,8 @@ config CORESIGHT_LINKS_AND_SINKS
entity at run time to form a complete trace path.
config CORESIGHT_LINK_AND_SINK_TMC
- bool "Coresight generic TMC driver"
+ tristate "Coresight generic TMC driver"
+
depends on CORESIGHT_LINKS_AND_SINKS
help
This enables support for the Trace Memory Controller driver.
@@ -34,6 +35,9 @@ config CORESIGHT_LINK_AND_SINK_TMC
complies with the generic implementation of the component without
special enhancement or added features.
+ To compile this driver as a module, choose M here: the
+ module will be called coresight-tmc.
+
config CORESIGHT_CATU
bool "Coresight Address Translation Unit (CATU) driver"
depends on CORESIGHT_LINK_AND_SINK_TMC
diff --git a/drivers/hwtracing/coresight/Makefile b/drivers/hwtracing/coresight/Makefile
index 271dc255454f..f2a568b969c4 100644
--- a/drivers/hwtracing/coresight/Makefile
+++ b/drivers/hwtracing/coresight/Makefile
@@ -4,9 +4,9 @@
#
obj-$(CONFIG_CORESIGHT) += coresight.o coresight-etm-perf.o \
coresight-platform.o coresight-sysfs.o
-obj-$(CONFIG_CORESIGHT_LINK_AND_SINK_TMC) += coresight-tmc.o \
- coresight-tmc-etf.o \
- coresight-tmc-etr.o
+obj-$(CONFIG_CORESIGHT_LINK_AND_SINK_TMC) += coresight-tmc.o
+coresight-tmc-y := coresight-tmc-core.o coresight-tmc-etf.o \
+ coresight-tmc-etr.o
obj-$(CONFIG_CORESIGHT_SINK_TPIU) += coresight-tpiu.o
obj-$(CONFIG_CORESIGHT_SINK_ETBV10) += coresight-etb10.o
obj-$(CONFIG_CORESIGHT_LINKS_AND_SINKS) += coresight-funnel.o \
diff --git a/drivers/hwtracing/coresight/coresight-tmc.c b/drivers/hwtracing/coresight/coresight-tmc-core.c
similarity index 96%
rename from drivers/hwtracing/coresight/coresight-tmc.c
rename to drivers/hwtracing/coresight/coresight-tmc-core.c
index 7040d583bed9..29d191ba7ccf 100644
--- a/drivers/hwtracing/coresight/coresight-tmc.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-core.c
@@ -561,6 +561,16 @@ static void tmc_shutdown(struct amba_device *adev)
spin_unlock_irqrestore(&drvdata->spinlock, flags);
}
+static int __exit tmc_remove(struct amba_device *adev)
+{
+ struct tmc_drvdata *drvdata = dev_get_drvdata(&adev->dev);
+
+ misc_deregister(&drvdata->miscdev);
+ coresight_unregister(drvdata->csdev);
+
+ return 0;
+}
+
static const struct amba_id tmc_ids[] = {
CS_AMBA_ID(0x000bb961),
/* Coresight SoC 600 TMC-ETR/ETS */
@@ -572,6 +582,8 @@ static const struct amba_id tmc_ids[] = {
{ 0, 0},
};
+MODULE_DEVICE_TABLE(amba, tmc_ids);
+
static struct amba_driver tmc_driver = {
.drv = {
.name = "coresight-tmc",
@@ -580,6 +592,11 @@ static struct amba_driver tmc_driver = {
},
.probe = tmc_probe,
.shutdown = tmc_shutdown,
+ .remove = tmc_remove,
.id_table = tmc_ids,
};
-builtin_amba_driver(tmc_driver);
+module_amba_driver(tmc_driver);
+
+MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora.org>");
+MODULE_DESCRIPTION("Arm CoreSight Trace Memory Controller driver");
+MODULE_LICENSE("GPL v2");
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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linux-arm-kernel mailing list
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next prev parent reply other threads:[~2020-07-23 4:33 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-23 4:27 [PATCH v4 00/20] coresight: allow to build coresight as modules Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 01/20] coresight: cpu_debug: add module name in Kconfig Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 02/20] coresight: cpu_debug: define MODULE_DEVICE_TABLE Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 03/20] coresight: use IS_ENABLED for CONFIGs that may be modules Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 04/20] coresight: add coresight prefix to barrier_pkt Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 05/20] coresight: export global symbols Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 06/20] coresight: add try_get_module() in coresight_grab_device() Tingwei Zhang
2020-07-23 10:55 ` Mike Leach
2020-07-25 10:05 ` Tingwei Zhang
2020-07-25 13:51 ` Mike Leach
2020-07-26 1:32 ` Tingwei Zhang
2020-07-27 17:04 ` Mike Leach
2020-07-28 1:07 ` Tingwei Zhang
2020-07-28 10:08 ` Mike Leach
2020-07-28 11:17 ` Tingwei Zhang
2020-07-28 20:25 ` Mike Leach
2020-07-23 11:07 ` Greg Kroah-Hartman
2020-07-23 18:04 ` Mathieu Poirier
2020-07-23 18:18 ` Greg Kroah-Hartman
2020-07-23 19:15 ` Mathieu Poirier
2020-07-24 0:41 ` Tingwei Zhang
2020-07-24 7:36 ` Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 07/20] allow to build coresight-stm as a module, for ease of development Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 08/20] coresight: allow etm3x to be built as a module Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 09/20] coresight: allow etm4x " Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 10/20] coresight: allow etb " Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 11/20] coresight: allow tpiu " Tingwei Zhang
2020-07-23 4:27 ` Tingwei Zhang [this message]
2020-07-23 4:27 ` [PATCH v4 13/20] coresight: remove multiple init calls from funnel driver Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 14/20] coresight: remove multiple init calls from replicator driver Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 15/20] coresight: allow funnel and replicator drivers to be built as modules Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 16/20] coresight: cti: add function to register cti associate ops Tingwei Zhang
2020-07-23 4:27 ` [PATCH v4 17/20] coresight: allow cti to be built as a module Tingwei Zhang
2020-07-23 4:28 ` [PATCH v4 18/20] coresight: tmc-etr: add function to register catu ops Tingwei Zhang
2020-07-23 4:28 ` [PATCH v4 19/20] coresight: allow catu drivers to be built as modules Tingwei Zhang
2020-07-23 4:28 ` [PATCH v4 20/20] coresight: allow the coresight core driver to be built as a module Tingwei Zhang
2020-07-23 11:03 ` [PATCH v4 00/20] coresight: allow to build coresight as modules Mike Leach
2020-07-24 0:37 ` Tingwei Zhang
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