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FROMLIST: soc: qcom: rpmh: Allow RPMH driver to be loaded as a module

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This patch allow the rpmh driver to be loaded as a permenent
module. Meaning it can be loaded from a module, but then cannot
be unloaded.

Ideally, it would include a remove hook and related logic, but
the rpmh driver is fairly core to the system, so once its loaded
with almost anythign else to get the system to go, the dependencies
are not likely to ever also be removed.

So making it a permenent module at least improves things slightly
over requiring it to be a built in driver.

Feedback would be appreciated!

Cc: Todd Kjos <tkjos@google.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Rajendra Nayak <rnayak@codeaurora.org>
Cc: linux-arm-msm@vger.kernel.org
Signed-off-by: John Stultz <john.stultz@linaro.org>
Link: https://lore.kernel.org/lkml/20200326224459.105170-3-john.stultz@linaro.org/T/#u
Change-Id: I865f3ad0baa3b84bc0ea321df88238a3a89101a8
This commit is contained in:
John Stultz
2020-03-26 21:47:19 +00:00
parent 4b1cb07714
commit cd49f10d96
2 changed files with 7 additions and 1 deletions
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2
drivers/soc/qcom/Kconfig
View File

@@ -104,7 +104,7 @@ config QCOM_RMTFS_MEM
Say y here if you intend to boot the modem remoteproc.
config QCOM_RPMH
bool "Qualcomm RPM-Hardened (RPMH) Communication"
tristate "Qualcomm RPM-Hardened (RPMH) Communication"
depends on ARCH_QCOM && ARM64 || COMPILE_TEST
help
Support for communication with the hardened-RPM blocks in

6
drivers/soc/qcom/rpmh-rsc.c
View File

@@ -11,6 +11,7 @@
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
@@ -679,6 +680,8 @@ static const struct of_device_id rpmh_drv_match[] = {
{ .compatible = "qcom,rpmh-rsc", },
{ }
};
MODULE_DEVICE_TABLE(of, rpmh_drv_match);
static struct platform_driver rpmh_driver = {
.probe = rpmh_rsc_probe,
@@ -693,3 +696,6 @@ static int __init rpmh_driver_init(void)
return platform_driver_register(&rpmh_driver);
}
arch_initcall(rpmh_driver_init);
MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPMh Driver");
MODULE_LICENSE("GPL v2");