soc: qcom: smd: Remove standalone driver

Remove the standalone SMD implementation as we have transitioned the
client drivers to use the RPMSG based one.

Also remove all dependencies on QCOM_SMD from Kconfig files, in order to
keep them selectable in the absence of the removed symbol.
Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/remoteproc/Kconfig

@@ -76,7 +76,7 @@ config QCOM_ADSP_PIL
 	depends on OF && ARCH_QCOM
 	depends on REMOTEPROC
 	depends on QCOM_SMEM
-	depends on RPMSG_QCOM_SMD || QCOM_SMD || (COMPILE_TEST && QCOM_SMD=n && RPMSG_QCOM_SMD=n)
+	depends on RPMSG_QCOM_SMD || (COMPILE_TEST && RPMSG_QCOM_SMD=n)
 	select MFD_SYSCON
 	select QCOM_MDT_LOADER
 	select QCOM_RPROC_COMMON
@@ -93,7 +93,7 @@ config QCOM_Q6V5_PIL
 	depends on OF && ARCH_QCOM
 	depends on QCOM_SMEM
 	depends on REMOTEPROC
-	depends on RPMSG_QCOM_SMD || QCOM_SMD || (COMPILE_TEST && QCOM_SMD=n && RPMSG_QCOM_SMD=n)
+	depends on RPMSG_QCOM_SMD || (COMPILE_TEST && RPMSG_QCOM_SMD=n)
 	select MFD_SYSCON
 	select QCOM_RPROC_COMMON
 	select QCOM_SCM
@@ -104,7 +104,7 @@ config QCOM_Q6V5_PIL
 config QCOM_WCNSS_PIL
 	tristate "Qualcomm WCNSS Peripheral Image Loader"
 	depends on OF && ARCH_QCOM
-	depends on RPMSG_QCOM_SMD || QCOM_SMD || (COMPILE_TEST && QCOM_SMD=n && RPMSG_QCOM_SMD=n)
+	depends on RPMSG_QCOM_SMD || (COMPILE_TEST && RPMSG_QCOM_SMD=n)
 	depends on QCOM_SMEM
 	depends on REMOTEPROC
 	select QCOM_MDT_LOADER

drivers/rpmsg/Kconfig

@@ -16,7 +16,6 @@ config RPMSG_CHAR
 config RPMSG_QCOM_SMD
 	tristate "Qualcomm Shared Memory Driver (SMD)"
 	depends on QCOM_SMEM
-	depends on QCOM_SMD=n
 	select RPMSG
 	help
 	  Say y here to enable support for the Qualcomm Shared Memory Driver

drivers/soc/qcom/Kconfig

@@ -33,14 +33,6 @@ config QCOM_SMEM
 	  The driver provides an interface to items in a heap shared among all
 	  processors in a Qualcomm platform.
 
-config QCOM_SMD
-	tristate "Qualcomm Shared Memory Driver (SMD)"
-	depends on QCOM_SMEM
-	help
-	  Say y here to enable support for the Qualcomm Shared Memory Driver
-	  providing communication channels to remote processors in Qualcomm
-	  platforms.
-
 config QCOM_SMD_RPM
 	tristate "Qualcomm Resource Power Manager (RPM) over SMD"
 	depends on ARCH_QCOM

drivers/soc/qcom/Makefile

 obj-$(CONFIG_QCOM_GSBI)	+=	qcom_gsbi.o
 obj-$(CONFIG_QCOM_MDT_LOADER)	+= mdt_loader.o
 obj-$(CONFIG_QCOM_PM)	+=	spm.o
-obj-$(CONFIG_QCOM_SMD) +=	smd.o
 obj-$(CONFIG_QCOM_SMD_RPM)	+= smd-rpm.o
 obj-$(CONFIG_QCOM_SMEM) +=	smem.o
 obj-$(CONFIG_QCOM_SMEM_STATE) += smem_state.o

include/linux/rpmsg/qcom_smd.h

@@ -6,7 +6,7 @@
 
 struct qcom_smd_edge;
 
-#if IS_ENABLED(CONFIG_RPMSG_QCOM_SMD) || IS_ENABLED(CONFIG_QCOM_SMD)
+#if IS_ENABLED(CONFIG_RPMSG_QCOM_SMD)
 
 struct qcom_smd_edge *qcom_smd_register_edge(struct device *parent,
 					     struct device_node *node);

include/linux/soc/qcom/smd.h

-#ifndef __QCOM_SMD_H__
-#define __QCOM_SMD_H__
-
-#include <linux/device.h>
-#include <linux/mod_devicetable.h>
-
-struct qcom_smd;
-struct qcom_smd_channel;
-struct qcom_smd_lookup;
-
-/**
- * struct qcom_smd_id - struct used for matching a smd device
- * @name:	name of the channel
- */
-struct qcom_smd_id {
-	char name[20];
-};
-
-/**
- * struct qcom_smd_device - smd device struct
- * @dev:	the device struct
- * @channel:	handle to the smd channel for this device
- */
-struct qcom_smd_device {
-	struct device dev;
-	struct qcom_smd_channel *channel;
-};
-
-typedef int (*qcom_smd_cb_t)(struct qcom_smd_channel *, const void *, size_t);
-
-/**
- * struct qcom_smd_driver - smd driver struct
- * @driver:	underlying device driver
- * @smd_match_table: static channel match table
- * @probe:	invoked when the smd channel is found
- * @remove:	invoked when the smd channel is closed
- * @callback:	invoked when an inbound message is received on the channel,
- *		should return 0 on success or -EBUSY if the data cannot be
- *		consumed at this time
- */
-struct qcom_smd_driver {
-	struct device_driver driver;
-	const struct qcom_smd_id *smd_match_table;
-
-	int (*probe)(struct qcom_smd_device *dev);
-	void (*remove)(struct qcom_smd_device *dev);
-	qcom_smd_cb_t callback;
-};
-
-#if IS_ENABLED(CONFIG_QCOM_SMD)
-
-int qcom_smd_driver_register(struct qcom_smd_driver *drv);
-void qcom_smd_driver_unregister(struct qcom_smd_driver *drv);
-
-struct qcom_smd_channel *qcom_smd_open_channel(struct qcom_smd_channel *channel,
-					       const char *name,
-					       qcom_smd_cb_t cb);
-void qcom_smd_close_channel(struct qcom_smd_channel *channel);
-void *qcom_smd_get_drvdata(struct qcom_smd_channel *channel);
-void qcom_smd_set_drvdata(struct qcom_smd_channel *channel, void *data);
-int qcom_smd_send(struct qcom_smd_channel *channel, const void *data, int len);
-
-
-struct qcom_smd_edge *qcom_smd_register_edge(struct device *parent,
-					     struct device_node *node);
-int qcom_smd_unregister_edge(struct qcom_smd_edge *edge);
-
-#else
-
-static inline int qcom_smd_driver_register(struct qcom_smd_driver *drv)
-{
-	return -ENXIO;
-}
-
-static inline void qcom_smd_driver_unregister(struct qcom_smd_driver *drv)
-{
-	/* This shouldn't be possible */
-	WARN_ON(1);
-}
-
-static inline struct qcom_smd_channel *
-qcom_smd_open_channel(struct qcom_smd_channel *channel,
-		      const char *name,
-		      qcom_smd_cb_t cb)
-{
-	/* This shouldn't be possible */
-	WARN_ON(1);
-	return NULL;
-}
-
-static inline void qcom_smd_close_channel(struct qcom_smd_channel *channel)
-{
-	/* This shouldn't be possible */
-	WARN_ON(1);
-}
-
-static inline void *qcom_smd_get_drvdata(struct qcom_smd_channel *channel)
-{
-	/* This shouldn't be possible */
-	WARN_ON(1);
-	return NULL;
-}
-
-static inline void qcom_smd_set_drvdata(struct qcom_smd_channel *channel, void *data)
-{
-	/* This shouldn't be possible */
-	WARN_ON(1);
-}
-
-static inline int qcom_smd_send(struct qcom_smd_channel *channel,
-				const void *data, int len)
-{
-	/* This shouldn't be possible */
-	WARN_ON(1);
-	return -ENXIO;
-}
-
-static inline struct qcom_smd_edge *
-qcom_smd_register_edge(struct device *parent,
-		       struct device_node *node)
-{
-	return ERR_PTR(-ENXIO);
-}
-
-static inline int qcom_smd_unregister_edge(struct qcom_smd_edge *edge)
-{
-	/* This shouldn't be possible */
-	WARN_ON(1);
-	return -ENXIO;
-}
-
-#endif
-
-#define module_qcom_smd_driver(__smd_driver) \
-	module_driver(__smd_driver, qcom_smd_driver_register, \
-		      qcom_smd_driver_unregister)
-
-
-#endif