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Date: Thu, 07 May 2020 11:01:24 -0700
From: rishabhb@...eaurora.org
To: Bjorn Andersson <bjorn.andersson@...aro.org>
Cc: Andy Gross <agross@...nel.org>, Ohad Ben-Cohen <ohad@...ery.com>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
Chris Lew <clew@...eaurora.org>, Sibi <sibis@...eaurora.org>,
Siddharth Gupta <sidgup@...eaurora.org>,
linux-remoteproc-owner@...r.kernel.org
Subject: Re: [PATCH 3/4] rpmsg: glink: Integrate glink_ssr in qcom_glink
On 2020-04-22 17:37, Bjorn Andersson wrote:
> In all but the very special case of a system with _only_ glink_rpm,
> GLINK is dependent on glink_ssr, so move it to rpmsg and combine it
> with
> qcom_glink_native in the new qcom_glink kernel module.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
Acked-by: Rishabh Bhatnagar <rishabhb@...eaurora.org>
> drivers/rpmsg/Kconfig | 6 +++---
> drivers/rpmsg/Makefile | 3 ++-
> drivers/{soc/qcom/glink_ssr.c => rpmsg/qcom_glink_ssr.c} | 4 ----
> drivers/soc/qcom/Kconfig | 9 ---------
> drivers/soc/qcom/Makefile | 1 -
> include/linux/rpmsg/qcom_glink.h | 7 +------
> 6 files changed, 6 insertions(+), 24 deletions(-)
> rename drivers/{soc/qcom/glink_ssr.c => rpmsg/qcom_glink_ssr.c} (97%)
>
> diff --git a/drivers/rpmsg/Kconfig b/drivers/rpmsg/Kconfig
> index a9108ff563dc..f96716893c2a 100644
> --- a/drivers/rpmsg/Kconfig
> +++ b/drivers/rpmsg/Kconfig
> @@ -24,13 +24,13 @@ config RPMSG_MTK_SCP
> remote processors in MediaTek platforms.
> This use IPI and IPC to communicate with remote processors.
>
> -config RPMSG_QCOM_GLINK_NATIVE
> +config RPMSG_QCOM_GLINK
> tristate
> select RPMSG
>
> config RPMSG_QCOM_GLINK_RPM
> tristate "Qualcomm RPM Glink driver"
> - select RPMSG_QCOM_GLINK_NATIVE
> + select RPMSG_QCOM_GLINK
> depends on HAS_IOMEM
> depends on MAILBOX
> help
> @@ -40,7 +40,7 @@ config RPMSG_QCOM_GLINK_RPM
>
> config RPMSG_QCOM_GLINK_SMEM
> tristate "Qualcomm SMEM Glink driver"
> - select RPMSG_QCOM_GLINK_NATIVE
> + select RPMSG_QCOM_GLINK
> depends on MAILBOX
> depends on QCOM_SMEM
> help
> diff --git a/drivers/rpmsg/Makefile b/drivers/rpmsg/Makefile
> index ae92a7fb08f6..ffe932ef6050 100644
> --- a/drivers/rpmsg/Makefile
> +++ b/drivers/rpmsg/Makefile
> @@ -2,8 +2,9 @@
> obj-$(CONFIG_RPMSG) += rpmsg_core.o
> obj-$(CONFIG_RPMSG_CHAR) += rpmsg_char.o
> obj-$(CONFIG_RPMSG_MTK_SCP) += mtk_rpmsg.o
> +qcom_glink-objs := qcom_glink_native.o qcom_glink_ssr.o
> +obj-$(CONFIG_RPMSG_QCOM_GLINK) += qcom_glink.o
> obj-$(CONFIG_RPMSG_QCOM_GLINK_RPM) += qcom_glink_rpm.o
> -obj-$(CONFIG_RPMSG_QCOM_GLINK_NATIVE) += qcom_glink_native.o
> obj-$(CONFIG_RPMSG_QCOM_GLINK_SMEM) += qcom_glink_smem.o
> obj-$(CONFIG_RPMSG_QCOM_SMD) += qcom_smd.o
> obj-$(CONFIG_RPMSG_VIRTIO) += virtio_rpmsg_bus.o
> diff --git a/drivers/soc/qcom/glink_ssr.c
> b/drivers/rpmsg/qcom_glink_ssr.c
> similarity index 97%
> rename from drivers/soc/qcom/glink_ssr.c
> rename to drivers/rpmsg/qcom_glink_ssr.c
> index 847d79c935f1..dcd1ce616974 100644
> --- a/drivers/soc/qcom/glink_ssr.c
> +++ b/drivers/rpmsg/qcom_glink_ssr.c
> @@ -164,7 +164,3 @@ static struct rpmsg_driver qcom_glink_ssr_driver =
> {
> },
> };
> module_rpmsg_driver(qcom_glink_ssr_driver);
> -
> -MODULE_ALIAS("rpmsg:glink_ssr");
> -MODULE_DESCRIPTION("Qualcomm GLINK SSR notifier");
> -MODULE_LICENSE("GPL v2");
> diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
> index 19332ea40234..5140bd82f1be 100644
> --- a/drivers/soc/qcom/Kconfig
> +++ b/drivers/soc/qcom/Kconfig
> @@ -35,15 +35,6 @@ config QCOM_GENI_SE
> driver is also used to manage the common aspects of multiple Serial
> Engines present in the QUP.
>
> -config QCOM_GLINK_SSR
> - tristate "Qualcomm Glink SSR driver"
> - depends on RPMSG
> - depends on QCOM_RPROC_COMMON
> - help
> - Say y here to enable GLINK SSR support. The GLINK SSR driver
> - implements the SSR protocol for notifying the remote processor
> about
> - neighboring subsystems going up or down.
> -
> config QCOM_GSBI
> tristate "QCOM General Serial Bus Interface"
> depends on ARCH_QCOM || COMPILE_TEST
> diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile
> index 5d6b83dc58e8..e9cacc9ad401 100644
> --- a/drivers/soc/qcom/Makefile
> +++ b/drivers/soc/qcom/Makefile
> @@ -3,7 +3,6 @@ CFLAGS_rpmh-rsc.o := -I$(src)
> obj-$(CONFIG_QCOM_AOSS_QMP) += qcom_aoss.o
> obj-$(CONFIG_QCOM_GENI_SE) += qcom-geni-se.o
> obj-$(CONFIG_QCOM_COMMAND_DB) += cmd-db.o
> -obj-$(CONFIG_QCOM_GLINK_SSR) += glink_ssr.o
> obj-$(CONFIG_QCOM_GSBI) += qcom_gsbi.o
> obj-$(CONFIG_QCOM_MDT_LOADER) += mdt_loader.o
> obj-$(CONFIG_QCOM_OCMEM) += ocmem.o
> diff --git a/include/linux/rpmsg/qcom_glink.h
> b/include/linux/rpmsg/qcom_glink.h
> index 09daa0acde2c..daded9fddf36 100644
> --- a/include/linux/rpmsg/qcom_glink.h
> +++ b/include/linux/rpmsg/qcom_glink.h
> @@ -12,6 +12,7 @@ struct qcom_glink;
> struct qcom_glink *qcom_glink_smem_register(struct device *parent,
> struct device_node *node);
> void qcom_glink_smem_unregister(struct qcom_glink *glink);
> +void qcom_glink_ssr_notify(const char *ssr_name);
>
> #else
>
> @@ -23,12 +24,6 @@ qcom_glink_smem_register(struct device *parent,
> }
>
> static inline void qcom_glink_smem_unregister(struct qcom_glink
> *glink) {}
> -
> -#endif
> -
> -#if IS_ENABLED(CONFIG_RPMSG_QCOM_GLINK_SSR)
> -void qcom_glink_ssr_notify(const char *ssr_name);
> -#else
> static inline void qcom_glink_ssr_notify(const char *ssr_name) {}
> #endif
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