bus: fsl-mc: add api to retrieve mc version (0544cb75) · Commits · 戴 / test

drivers/bus/fsl-mc/fsl-mc-bus.c

+17 −16

Original line number	Diff line number	Diff line
		@@ -26,6 +26,8 @@
		*/
		#define FSL_MC_DEFAULT_DMA_MASK (~0ULL)

		static struct fsl_mc_version mc_version;

		/**
		* struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device
		* @root_mc_bus_dev: fsl-mc device representing the root DPRC
		@@ -54,20 +56,6 @@ struct fsl_mc_addr_translation_range {
		phys_addr_t start_phys_addr;
		};

		/**
		* struct mc_version
		* @major: Major version number: incremented on API compatibility changes
		* @minor: Minor version number: incremented on API additions (that are
		* backward compatible); reset when major version is incremented
		* @revision: Internal revision number: incremented on implementation changes
		* and/or bug fixes that have no impact on API
		*/
		struct mc_version {
		u32 major;
		u32 minor;
		u32 revision;
		};

		/**
		* fsl_mc_bus_match - device to driver matching callback
		* @dev: the fsl-mc device to match against
		@@ -338,7 +326,7 @@ EXPORT_SYMBOL_GPL(fsl_mc_driver_unregister);
		*/
		static int mc_get_version(struct fsl_mc_io *mc_io,
		u32 cmd_flags,
		struct mc_version *mc_ver_info)
		struct fsl_mc_version *mc_ver_info)
		{
		struct fsl_mc_command cmd = { 0 };
		struct dpmng_rsp_get_version *rsp_params;
		@@ -363,6 +351,20 @@ static int mc_get_version(struct fsl_mc_io *mc_io,
		return 0;
		}

		/**
		* fsl_mc_get_version - function to retrieve the MC f/w version information
		*
		* Return: mc version when called after fsl-mc-bus probe; NULL otherwise.
		*/
		struct fsl_mc_version *fsl_mc_get_version(void)
		{
		if (mc_version.major)
		return &mc_version;

		return NULL;
		}
		EXPORT_SYMBOL_GPL(fsl_mc_get_version);

		/**
		* fsl_mc_get_root_dprc - function to traverse to the root dprc
		*/
		@@ -862,7 +864,6 @@ static int fsl_mc_bus_probe(struct platform_device *pdev)
		int container_id;
		phys_addr_t mc_portal_phys_addr;
		u32 mc_portal_size;
		struct mc_version mc_version;
		struct resource res;

		mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);

include/linux/fsl/mc.h

+16 −0

Original line number	Diff line number	Diff line
		@@ -381,6 +381,22 @@ int __must_check __fsl_mc_driver_register(struct fsl_mc_driver *fsl_mc_driver,

		void fsl_mc_driver_unregister(struct fsl_mc_driver *driver);

		/**
		* struct fsl_mc_version
		* @major: Major version number: incremented on API compatibility changes
		* @minor: Minor version number: incremented on API additions (that are
		* backward compatible); reset when major version is incremented
		* @revision: Internal revision number: incremented on implementation changes
		* and/or bug fixes that have no impact on API
		*/
		struct fsl_mc_version {
		u32 major;
		u32 minor;
		u32 revision;
		};

		struct fsl_mc_version *fsl_mc_get_version(void);

		int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
		u16 mc_io_flags,
		struct fsl_mc_io **new_mc_io);

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