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Date:   Thu, 07 May 2020 11:01:24 -0700
From:   rishabhb@codeaurora.org
To:     Bjorn Andersson <bjorn.andersson@linaro.org>
Cc:     Andy Gross <agross@kernel.org>, Ohad Ben-Cohen <ohad@wizery.com>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org,
        Chris Lew <clew@codeaurora.org>, Sibi <sibis@codeaurora.org>,
        Siddharth Gupta <sidgup@codeaurora.org>,
        linux-remoteproc-owner@vger.kernel.org
Subject: Re: [PATCH 3/4] rpmsg: glink: Integrate glink_ssr in qcom_glink
In-Reply-To: <20200423003736.2027371-4-bjorn.andersson@linaro.org>
References: <20200423003736.2027371-1-bjorn.andersson@linaro.org>
 <20200423003736.2027371-4-bjorn.andersson@linaro.org>
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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@linaro.org>
> ---

Acked-by: Rishabh Bhatnagar <rishabhb@codeaurora.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