remoteproc: Add device-managed variants of rproc_alloc/rproc_add (305ac5a7) · Commits · 戴 / test

drivers/remoteproc/remoteproc_core.c

+67 −0

Original line number	Diff line number	Diff line
		@@ -1976,6 +1976,33 @@ int rproc_add(struct rproc *rproc)
		}
		EXPORT_SYMBOL(rproc_add);

		static void devm_rproc_remove(void *rproc)
		{
		rproc_del(rproc);
		}

		/**
		* devm_rproc_add() - resource managed rproc_add()
		* @dev: the underlying device
		* @rproc: the remote processor handle to register
		*
		* This function performs like rproc_add() but the registered rproc device will
		* automatically be removed on driver detach.
		*
		* Returns: 0 on success, negative errno on failure
		*/
		int devm_rproc_add(struct device dev, struct rproc rproc)
		{
		int err;

		err = rproc_add(rproc);
		if (err)
		return err;

		return devm_add_action_or_reset(dev, devm_rproc_remove, rproc);
		}
		EXPORT_SYMBOL(devm_rproc_add);

		/**
		* rproc_type_release() - release a remote processor instance
		* @dev: the rproc's device
		@@ -2215,6 +2242,46 @@ int rproc_del(struct rproc *rproc)
		}
		EXPORT_SYMBOL(rproc_del);

		static void devm_rproc_free(struct device dev, void res)
		{
		rproc_free((struct rproc *)res);
		}

		/**
		* devm_rproc_alloc() - resource managed rproc_alloc()
		* @dev: the underlying device
		* @name: name of this remote processor
		* @ops: platform-specific handlers (mainly start/stop)
		* @firmware: name of firmware file to load, can be NULL
		* @len: length of private data needed by the rproc driver (in bytes)
		*
		* This function performs like rproc_alloc() but the acquired rproc device will
		* automatically be released on driver detach.
		*
		* Returns: new rproc instance, or NULL on failure
		*/
		struct rproc devm_rproc_alloc(struct device dev, const char *name,
		const struct rproc_ops *ops,
		const char *firmware, int len)
		{
		struct rproc *ptr, rproc;

		ptr = devres_alloc(devm_rproc_free, sizeof(*ptr), GFP_KERNEL);
		if (!ptr)
		return ERR_PTR(-ENOMEM);

		rproc = rproc_alloc(dev, name, ops, firmware, len);
		if (rproc) {
		*ptr = rproc;
		devres_add(dev, ptr);
		} else {
		devres_free(ptr);
		}

		return rproc;
		}
		EXPORT_SYMBOL(devm_rproc_alloc);

		/**
		* rproc_add_subdev() - add a subdevice to a remoteproc
		* @rproc: rproc handle to add the subdevice to

include/linux/remoteproc.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -600,6 +600,11 @@ int rproc_add(struct rproc *rproc);
		int rproc_del(struct rproc *rproc);
		void rproc_free(struct rproc *rproc);

		struct rproc devm_rproc_alloc(struct device dev, const char *name,
		const struct rproc_ops *ops,
		const char *firmware, int len);
		int devm_rproc_add(struct device dev, struct rproc rproc);

		void rproc_add_carveout(struct rproc rproc, struct rproc_mem_entry mem);

		struct rproc_mem_entry *

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