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>
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 v3 06/20] Allow to build coresight-stm as a module, for ease of development.
Date: Fri, 17 Jul 2020 13:45:22 +0800 [thread overview]
Message-ID: <20200717054536.7052-7-tingwei@codeaurora.org> (raw)
In-Reply-To: <20200717054536.7052-1-tingwei@codeaurora.org>
- Kconfig becomes a tristate, to allow =m
- add a stm_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 | 5 ++++-
drivers/hwtracing/coresight/coresight-stm.c | 20 +++++++++++++++++++-
2 files changed, 23 insertions(+), 2 deletions(-)
diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig
index 4663fd1bbffc..6433f835fc97 100644
--- a/drivers/hwtracing/coresight/Kconfig
+++ b/drivers/hwtracing/coresight/Kconfig
@@ -86,7 +86,7 @@ config CORESIGHT_SOURCE_ETM4X
data tracing may also be available.
config CORESIGHT_STM
- bool "CoreSight System Trace Macrocell driver"
+ tristate "CoreSight System Trace Macrocell driver"
depends on (ARM && !(CPU_32v3 || CPU_32v4 || CPU_32v4T)) || ARM64
select CORESIGHT_LINKS_AND_SINKS
select STM
@@ -96,6 +96,9 @@ config CORESIGHT_STM
logging useful software events or data coming from various entities
in the system, possibly running different OSs
+ To compile this driver as a module, choose M here: the
+ module will be called coresight-stm.
+
config CORESIGHT_CPU_DEBUG
tristate "CoreSight CPU Debug driver"
depends on ARM || ARM64
diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c
index b908ca104645..d009e95fb5b8 100644
--- a/drivers/hwtracing/coresight/coresight-stm.c
+++ b/drivers/hwtracing/coresight/coresight-stm.c
@@ -950,6 +950,17 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)
return ret;
}
+static int __exit stm_remove(struct amba_device *adev)
+{
+ struct stm_drvdata *drvdata = dev_get_drvdata(&adev->dev);
+
+ coresight_unregister(drvdata->csdev);
+
+ stm_unregister_device(&drvdata->stm);
+
+ return 0;
+}
+
#ifdef CONFIG_PM
static int stm_runtime_suspend(struct device *dev)
{
@@ -982,6 +993,8 @@ static const struct amba_id stm_ids[] = {
{ 0, 0},
};
+MODULE_DEVICE_TABLE(amba, stm_ids);
+
static struct amba_driver stm_driver = {
.drv = {
.name = "coresight-stm",
@@ -990,7 +1003,12 @@ static struct amba_driver stm_driver = {
.suppress_bind_attrs = true,
},
.probe = stm_probe,
+ .remove = stm_remove,
.id_table = stm_ids,
};
-builtin_amba_driver(stm_driver);
+module_amba_driver(stm_driver);
+
+MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora•org>");
+MODULE_DESCRIPTION("Arm CoreSight System Trace Macrocell 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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next prev parent reply other threads:[~2020-07-17 5:48 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-17 5:45 [PATCH v3 00/20] coresight: allow to build coresight as modules Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 01/20] coresight: cpu_debug: add module name in Kconfig Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 02/20] coresight: cpu_debug: define MODULE_DEVICE_TABLE Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 03/20] coresight: use IS_ENABLED for CONFIGs that may be modules Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 04/20] coresight: add coresight prefix to barrier_pkt Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 05/20] coresight: export global symbols Tingwei Zhang
2020-07-17 5:45 ` Tingwei Zhang [this message]
2020-07-17 5:45 ` [PATCH v3 07/20] coresight: allow etm3x to be built as a module Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 08/20] coresight: allow etm4x " Tingwei Zhang
2020-07-17 17:05 ` Mike Leach
2020-07-18 3:25 ` tingwei
2020-07-18 17:38 ` Mike Leach
2020-07-21 14:55 ` Mathieu Poirier
2020-07-21 23:22 ` tingwei
2020-07-20 6:58 ` Sai Prakash Ranjan
2020-07-21 7:03 ` Sai Prakash Ranjan
2020-07-17 5:45 ` [PATCH v3 09/20] coresight: allow etb " Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 10/20] coresight: allow tpiu " Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 11/20] coresight: allow tmc " Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 12/20] coresight: remove multiple init calls from funnel driver Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 13/20] coresight: remove multiple init calls from replicator driver Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 14/20] coresight: allow funnel and replicator drivers to be built as modules Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 15/20] coresight: cti: add function to register cti associate ops Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 16/20] coresight: allow cti to be built as a module Tingwei Zhang
2020-07-20 17:00 ` Mike Leach
2020-07-20 21:07 ` Mike Leach
2020-07-21 16:35 ` Mike Leach
2020-07-21 23:27 ` tingwei
2020-07-17 5:45 ` [PATCH v3 17/20] coresight: tmc-etr: add function to register catu ops Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 18/20] coresight: allow catu drivers to be built as modules Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 19/20] coresight: add try_get_module() in coresight_grab_device() Tingwei Zhang
2020-07-22 10:49 ` Suzuki K Poulose
2020-07-22 10:48 ` Greg KH
2020-07-22 11:26 ` Suzuki K Poulose
2020-07-23 0:18 ` tingwei
2020-07-23 0:35 ` tingwei
2020-07-22 10:51 ` Suzuki K Poulose
2020-07-23 0:19 ` tingwei
2020-07-23 19:36 ` Mathieu Poirier
2020-07-24 1:17 ` Tingwei Zhang
2020-07-17 5:45 ` [PATCH v3 20/20] coresight: allow the coresight core driver to be built as a module Tingwei Zhang
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