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soc: qcom: rpmhpd: Allow RPMHPD driver to be loaded as a module

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This patch allow the rpmhpd 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
apparently the genpd code isn't able to track usage and cleaning
things up?

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

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
Acked-by: Saravana Kannan <saravanak@google.com>
Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Link: https://lore.kernel.org/r/20200326224459.105170-4-john.stultz@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
John Stultz 2020-03-26 22:44:59 +00:00 committed by Bjorn Andersson
parent 1d3c6f86fd
commit d4889ec1fc
2 changed files with 6 additions and 1 deletions
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2
drivers/soc/qcom/Kconfig
View file

@ -117,7 +117,7 @@ config QCOM_RPMH
help apply the aggregated state on the resource.
config QCOM_RPMHPD
bool "Qualcomm RPMh Power domain driver"
tristate "Qualcomm RPMh Power domain driver"
depends on QCOM_RPMH && QCOM_COMMAND_DB
help
QCOM RPMh Power domain driver to support power-domains with

5
drivers/soc/qcom/rpmhpd.c
View file

@ -4,6 +4,7 @@
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/pm_domain.h>
#include <linux/slab.h>
@ -189,6 +190,7 @@ static const struct of_device_id rpmhpd_match_table[] = {
{ .compatible = "qcom,sm8150-rpmhpd", .data = &sm8150_desc },
{ }
};
MODULE_DEVICE_TABLE(of, rpmhpd_match_table);
static int rpmhpd_send_corner(struct rpmhpd *pd, int state,
unsigned int corner, bool sync)
@ -460,3 +462,6 @@ static int __init rpmhpd_init(void)
return platform_driver_register(&rpmhpd_driver);
}
core_initcall(rpmhpd_init);
MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPMh Power Domain Driver");
MODULE_LICENSE("GPL v2");