[PATCH 5/9] staging: fsl-mc: dpmcp: drop unused APIs

[laurentiu.tudor]

From: Laurentiu Tudor <laurentiu.tudor@xxxxxxx>

These APIs are not used yet, so drop the dead code.
The patch is mostly mechanical, with a couple exceptions:
 - getters/setters were not removed even if only one of
   them is being used
 - versioning API was also left in place
Also in this patch, add missing prototype for
version query function.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@xxxxxxx>
---
 drivers/staging/fsl-mc/bus/dpmcp-cmd.h |  95 --------
 drivers/staging/fsl-mc/bus/dpmcp.c     | 382 ---------------------------------
 drivers/staging/fsl-mc/bus/dpmcp.h     | 100 +--------
 3 files changed, 4 insertions(+), 573 deletions(-)

diff --git a/drivers/staging/fsl-mc/bus/dpmcp-cmd.h b/drivers/staging/fsl-mc/bus/dpmcp-cmd.h
index 7cb5149..384a13d 100644
--- a/drivers/staging/fsl-mc/bus/dpmcp-cmd.h
+++ b/drivers/staging/fsl-mc/bus/dpmcp-cmd.h
@@ -45,107 +45,12 @@
 /* Command IDs */
 #define DPMCP_CMDID_CLOSE		DPMCP_CMD(0x800)
 #define DPMCP_CMDID_OPEN		DPMCP_CMD(0x80b)
-#define DPMCP_CMDID_CREATE		DPMCP_CMD(0x90b)
-#define DPMCP_CMDID_DESTROY		DPMCP_CMD(0x98b)
 #define DPMCP_CMDID_GET_API_VERSION	DPMCP_CMD(0xa0b)
 
-#define DPMCP_CMDID_GET_ATTR		DPMCP_CMD(0x004)
 #define DPMCP_CMDID_RESET		DPMCP_CMD(0x005)
 
-#define DPMCP_CMDID_SET_IRQ		DPMCP_CMD(0x010)
-#define DPMCP_CMDID_GET_IRQ		DPMCP_CMD(0x011)
-#define DPMCP_CMDID_SET_IRQ_ENABLE	DPMCP_CMD(0x012)
-#define DPMCP_CMDID_GET_IRQ_ENABLE	DPMCP_CMD(0x013)
-#define DPMCP_CMDID_SET_IRQ_MASK	DPMCP_CMD(0x014)
-#define DPMCP_CMDID_GET_IRQ_MASK	DPMCP_CMD(0x015)
-#define DPMCP_CMDID_GET_IRQ_STATUS	DPMCP_CMD(0x016)
-
 struct dpmcp_cmd_open {
 	__le32 dpmcp_id;
 };
 
-struct dpmcp_cmd_create {
-	__le32 portal_id;
-};
-
-struct dpmcp_cmd_destroy {
-	__le32 object_id;
-};
-
-struct dpmcp_cmd_set_irq {
-	/* cmd word 0 */
-	u8 irq_index;
-	u8 pad[3];
-	__le32 irq_val;
-	/* cmd word 1 */
-	__le64 irq_addr;
-	/* cmd word 2 */
-	__le32 irq_num;
-};
-
-struct dpmcp_cmd_get_irq {
-	__le32 pad;
-	u8 irq_index;
-};
-
-struct dpmcp_rsp_get_irq {
-	/* cmd word 0 */
-	__le32 irq_val;
-	__le32 pad;
-	/* cmd word 1 */
-	__le64 irq_paddr;
-	/* cmd word 2 */
-	__le32 irq_num;
-	__le32 type;
-};
-
-#define DPMCP_ENABLE		0x1
-
-struct dpmcp_cmd_set_irq_enable {
-	u8 enable;
-	u8 pad[3];
-	u8 irq_index;
-};
-
-struct dpmcp_cmd_get_irq_enable {
-	__le32 pad;
-	u8 irq_index;
-};
-
-struct dpmcp_rsp_get_irq_enable {
-	u8 enabled;
-};
-
-struct dpmcp_cmd_set_irq_mask {
-	__le32 mask;
-	u8 irq_index;
-};
-
-struct dpmcp_cmd_get_irq_mask {
-	__le32 pad;
-	u8 irq_index;
-};
-
-struct dpmcp_rsp_get_irq_mask {
-	__le32 mask;
-};
-
-struct dpmcp_cmd_get_irq_status {
-	__le32 status;
-	u8 irq_index;
-};
-
-struct dpmcp_rsp_get_irq_status {
-	__le32 status;
-};
-
-struct dpmcp_rsp_get_attributes {
-	/* response word 0 */
-	__le32 pad;
-	__le32 id;
-	/* response word 1 */
-	__le16 version_major;
-	__le16 version_minor;
-};
-
 #endif /* _FSL_DPMCP_CMD_H */
diff --git a/drivers/staging/fsl-mc/bus/dpmcp.c b/drivers/staging/fsl-mc/bus/dpmcp.c
index e4d1651..ad4c8b4 100644
--- a/drivers/staging/fsl-mc/bus/dpmcp.c
+++ b/drivers/staging/fsl-mc/bus/dpmcp.c
@@ -104,82 +104,6 @@ int dpmcp_close(struct fsl_mc_io *mc_io,
 }
 
 /**
- * dpmcp_create() - Create the DPMCP object.
- * @mc_io:	Pointer to MC portal's I/O object
- * @dprc_token:	Parent container token; '0' for default container
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @cfg:	Configuration structure
- * @obj_id:	Returned object id; use in subsequent API calls
- *
- * Create the DPMCP object, allocate required resources and
- * perform required initialization.
- *
- * The object can be created either by declaring it in the
- * DPL file, or by calling this function.
-
- * This function accepts an authentication token of a parent
- * container that this object should be assigned to and returns
- * an object id. This object_id will be used in all subsequent calls to
- * this specific object.
- *
- * Return:	'0' on Success; Error code otherwise.
- */
-int dpmcp_create(struct fsl_mc_io *mc_io,
-		 u16 dprc_token,
-		 u32 cmd_flags,
-		 const struct dpmcp_cfg *cfg,
-		 u32 *obj_id)
-{
-	struct mc_command cmd = { 0 };
-	struct dpmcp_cmd_create *cmd_params;
-
-	int err;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_CREATE,
-					  cmd_flags, dprc_token);
-	cmd_params = (struct dpmcp_cmd_create *)cmd.params;
-	cmd_params->portal_id = cpu_to_le32(cfg->portal_id);
-
-	/* send command to mc*/
-	err = mc_send_command(mc_io, &cmd);
-	if (err)
-		return err;
-
-	/* retrieve response parameters */
-	*obj_id = mc_cmd_read_object_id(&cmd);
-
-	return 0;
-}
-
-/**
- * dpmcp_destroy() - Destroy the DPMCP object and release all its resources.
- * @mc_io:	Pointer to MC portal's I/O object
- * @dprc_token:	Parent container token; '0' for default container
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @obj_id:	ID of DPMCP object
- *
- * Return:	'0' on Success; error code otherwise.
- */
-int dpmcp_destroy(struct fsl_mc_io *mc_io,
-		  u16 dprc_token,
-		  u32 cmd_flags,
-		  u32 obj_id)
-{
-	struct mc_command cmd = { 0 };
-	struct dpmcp_cmd_destroy *cmd_params;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_DESTROY,
-					  cmd_flags, dprc_token);
-	cmd_params = (struct dpmcp_cmd_destroy *)cmd.params;
-	cmd_params->object_id = cpu_to_le32(obj_id);
-
-	/* send command to mc*/
-	return mc_send_command(mc_io, &cmd);
-}
-
-/**
  * dpmcp_reset() - Reset the DPMCP, returns the object to initial state.
  * @mc_io:	Pointer to MC portal's I/O object
  * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
@@ -202,312 +126,6 @@ int dpmcp_reset(struct fsl_mc_io *mc_io,
 }
 
 /**
- * dpmcp_set_irq() - Set IRQ information for the DPMCP to trigger an interrupt.
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPMCP object
- * @irq_index:	Identifies the interrupt index to configure
- * @irq_cfg:	IRQ configuration
- *
- * Return:	'0' on Success; Error code otherwise.
- */
-int dpmcp_set_irq(struct fsl_mc_io *mc_io,
-		  u32 cmd_flags,
-		  u16 token,
-		  u8 irq_index,
-		  struct dpmcp_irq_cfg	*irq_cfg)
-{
-	struct mc_command cmd = { 0 };
-	struct dpmcp_cmd_set_irq *cmd_params;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_SET_IRQ,
-					  cmd_flags, token);
-	cmd_params = (struct dpmcp_cmd_set_irq *)cmd.params;
-	cmd_params->irq_index = irq_index;
-	cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
-	cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
-	cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
-
-	/* send command to mc*/
-	return mc_send_command(mc_io, &cmd);
-}
-
-/**
- * dpmcp_get_irq() - Get IRQ information from the DPMCP.
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPMCP object
- * @irq_index:	The interrupt index to configure
- * @type:	Interrupt type: 0 represents message interrupt
- *		type (both irq_addr and irq_val are valid)
- * @irq_cfg:	IRQ attributes
- *
- * Return:	'0' on Success; Error code otherwise.
- */
-int dpmcp_get_irq(struct fsl_mc_io *mc_io,
-		  u32 cmd_flags,
-		  u16 token,
-		  u8 irq_index,
-		  int *type,
-		  struct dpmcp_irq_cfg	*irq_cfg)
-{
-	struct mc_command cmd = { 0 };
-	struct dpmcp_cmd_get_irq *cmd_params;
-	struct dpmcp_rsp_get_irq *rsp_params;
-	int err;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ,
-					  cmd_flags, token);
-	cmd_params = (struct dpmcp_cmd_get_irq *)cmd.params;
-	cmd_params->irq_index = irq_index;
-
-	/* send command to mc*/
-	err = mc_send_command(mc_io, &cmd);
-	if (err)
-		return err;
-
-	/* retrieve response parameters */
-	rsp_params = (struct dpmcp_rsp_get_irq *)cmd.params;
-	irq_cfg->val = le32_to_cpu(rsp_params->irq_val);
-	irq_cfg->paddr = le64_to_cpu(rsp_params->irq_paddr);
-	irq_cfg->irq_num = le32_to_cpu(rsp_params->irq_num);
-	*type = le32_to_cpu(rsp_params->type);
-	return 0;
-}
-
-/**
- * dpmcp_set_irq_enable() - Set overall interrupt state.
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPMCP object
- * @irq_index:	The interrupt index to configure
- * @en:	Interrupt state - enable = 1, disable = 0
- *
- * Allows GPP software to control when interrupts are generated.
- * Each interrupt can have up to 32 causes.  The enable/disable control's the
- * overall interrupt state. if the interrupt is disabled no causes will cause
- * an interrupt.
- *
- * Return:	'0' on Success; Error code otherwise.
- */
-int dpmcp_set_irq_enable(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 token,
-			 u8 irq_index,
-			 u8 en)
-{
-	struct mc_command cmd = { 0 };
-	struct dpmcp_cmd_set_irq_enable *cmd_params;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_SET_IRQ_ENABLE,
-					  cmd_flags, token);
-	cmd_params = (struct dpmcp_cmd_set_irq_enable *)cmd.params;
-	cmd_params->enable = en & DPMCP_ENABLE;
-	cmd_params->irq_index = irq_index;
-
-	/* send command to mc*/
-	return mc_send_command(mc_io, &cmd);
-}
-
-/**
- * dpmcp_get_irq_enable() - Get overall interrupt state
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPMCP object
- * @irq_index:	The interrupt index to configure
- * @en:		Returned interrupt state - enable = 1, disable = 0
- *
- * Return:	'0' on Success; Error code otherwise.
- */
-int dpmcp_get_irq_enable(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 token,
-			 u8 irq_index,
-			 u8 *en)
-{
-	struct mc_command cmd = { 0 };
-	struct dpmcp_cmd_get_irq_enable *cmd_params;
-	struct dpmcp_rsp_get_irq_enable *rsp_params;
-	int err;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ_ENABLE,
-					  cmd_flags, token);
-	cmd_params = (struct dpmcp_cmd_get_irq_enable *)cmd.params;
-	cmd_params->irq_index = irq_index;
-
-	/* send command to mc*/
-	err = mc_send_command(mc_io, &cmd);
-	if (err)
-		return err;
-
-	/* retrieve response parameters */
-	rsp_params = (struct dpmcp_rsp_get_irq_enable *)cmd.params;
-	*en = rsp_params->enabled & DPMCP_ENABLE;
-	return 0;
-}
-
-/**
- * dpmcp_set_irq_mask() - Set interrupt mask.
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPMCP object
- * @irq_index:	The interrupt index to configure
- * @mask:	Event mask to trigger interrupt;
- *			each bit:
- *				0 = ignore event
- *				1 = consider event for asserting IRQ
- *
- * Every interrupt can have up to 32 causes and the interrupt model supports
- * masking/unmasking each cause independently
- *
- * Return:	'0' on Success; Error code otherwise.
- */
-int dpmcp_set_irq_mask(struct fsl_mc_io *mc_io,
-		       u32 cmd_flags,
-		       u16 token,
-		       u8 irq_index,
-		       u32 mask)
-{
-	struct mc_command cmd = { 0 };
-	struct dpmcp_cmd_set_irq_mask *cmd_params;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_SET_IRQ_MASK,
-					  cmd_flags, token);
-	cmd_params = (struct dpmcp_cmd_set_irq_mask *)cmd.params;
-	cmd_params->mask = cpu_to_le32(mask);
-	cmd_params->irq_index = irq_index;
-
-	/* send command to mc*/
-	return mc_send_command(mc_io, &cmd);
-}
-
-/**
- * dpmcp_get_irq_mask() - Get interrupt mask.
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPMCP object
- * @irq_index:	The interrupt index to configure
- * @mask:	Returned event mask to trigger interrupt
- *
- * Every interrupt can have up to 32 causes and the interrupt model supports
- * masking/unmasking each cause independently
- *
- * Return:	'0' on Success; Error code otherwise.
- */
-int dpmcp_get_irq_mask(struct fsl_mc_io *mc_io,
-		       u32 cmd_flags,
-		       u16 token,
-		       u8 irq_index,
-		       u32 *mask)
-{
-	struct mc_command cmd = { 0 };
-	struct dpmcp_cmd_get_irq_mask *cmd_params;
-	struct dpmcp_rsp_get_irq_mask *rsp_params;
-
-	int err;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ_MASK,
-					  cmd_flags, token);
-	cmd_params = (struct dpmcp_cmd_get_irq_mask *)cmd.params;
-	cmd_params->irq_index = irq_index;
-
-	/* send command to mc*/
-	err = mc_send_command(mc_io, &cmd);
-	if (err)
-		return err;
-
-	/* retrieve response parameters */
-	rsp_params = (struct dpmcp_rsp_get_irq_mask *)cmd.params;
-	*mask = le32_to_cpu(rsp_params->mask);
-
-	return 0;
-}
-
-/**
- * dpmcp_get_irq_status() - Get the current status of any pending interrupts.
- *
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPMCP object
- * @irq_index:	The interrupt index to configure
- * @status:	Returned interrupts status - one bit per cause:
- *			0 = no interrupt pending
- *			1 = interrupt pending
- *
- * Return:	'0' on Success; Error code otherwise.
- */
-int dpmcp_get_irq_status(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 token,
-			 u8 irq_index,
-			 u32 *status)
-{
-	struct mc_command cmd = { 0 };
-	struct dpmcp_cmd_get_irq_status *cmd_params;
-	struct dpmcp_rsp_get_irq_status *rsp_params;
-	int err;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ_STATUS,
-					  cmd_flags, token);
-	cmd_params = (struct dpmcp_cmd_get_irq_status *)cmd.params;
-	cmd_params->status = cpu_to_le32(*status);
-	cmd_params->irq_index = irq_index;
-
-	/* send command to mc*/
-	err = mc_send_command(mc_io, &cmd);
-	if (err)
-		return err;
-
-	/* retrieve response parameters */
-	rsp_params = (struct dpmcp_rsp_get_irq_status *)cmd.params;
-	*status = le32_to_cpu(rsp_params->status);
-
-	return 0;
-}
-
-/**
- * dpmcp_get_attributes - Retrieve DPMCP attributes.
- *
- * @mc_io:	Pointer to MC portal's I/O object
- * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
- * @token:	Token of DPMCP object
- * @attr:	Returned object's attributes
- *
- * Return:	'0' on Success; Error code otherwise.
- */
-int dpmcp_get_attributes(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 token,
-			 struct dpmcp_attr *attr)
-{
-	struct mc_command cmd = { 0 };
-	struct dpmcp_rsp_get_attributes *rsp_params;
-	int err;
-
-	/* prepare command */
-	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_ATTR,
-					  cmd_flags, token);
-
-	/* send command to mc*/
-	err = mc_send_command(mc_io, &cmd);
-	if (err)
-		return err;
-
-	/* retrieve response parameters */
-	rsp_params = (struct dpmcp_rsp_get_attributes *)cmd.params;
-	attr->id = le32_to_cpu(rsp_params->id);
-
-	return 0;
-}
-
-/**
  * dpmcp_get_api_version - Get Data Path Management Command Portal API version
  * @mc_io:	Pointer to Mc portal's I/O object
  * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
diff --git a/drivers/staging/fsl-mc/bus/dpmcp.h b/drivers/staging/fsl-mc/bus/dpmcp.h
index 98a100d..f616031 100644
--- a/drivers/staging/fsl-mc/bus/dpmcp.h
+++ b/drivers/staging/fsl-mc/bus/dpmcp.h
@@ -44,109 +44,17 @@ int dpmcp_open(struct fsl_mc_io *mc_io,
 	       int dpmcp_id,
 	       u16 *token);
 
-/* Get portal ID from pool */
-#define DPMCP_GET_PORTAL_ID_FROM_POOL (-1)
-
 int dpmcp_close(struct fsl_mc_io *mc_io,
 		u32 cmd_flags,
 		u16 token);
 
-/**
- * struct dpmcp_cfg - Structure representing DPMCP configuration
- * @portal_id:	Portal ID; 'DPMCP_GET_PORTAL_ID_FROM_POOL' to get the portal ID
- *		from pool
- */
-struct dpmcp_cfg {
-	int portal_id;
-};
-
-int dpmcp_create(struct fsl_mc_io *mc_io,
-		 u16 dprc_token,
-		 u32 cmd_flags,
-		 const struct dpmcp_cfg *cfg,
-		 u32 *obj_id);
-
-int dpmcp_destroy(struct fsl_mc_io *mc_io,
-		  u16 dprc_token,
-		  u32 cmd_flags,
-		  u32 obj_id);
+int dpmcp_get_api_version(struct fsl_mc_io *mc_io,
+			  u32 cmd_flags,
+			  u16 *major_ver,
+			  u16 *minor_ver);
 
 int dpmcp_reset(struct fsl_mc_io *mc_io,
 		u32 cmd_flags,
 		u16 token);
 
-/* IRQ */
-/* IRQ Index */
-#define DPMCP_IRQ_INDEX                             0
-/* irq event - Indicates that the link state changed */
-#define DPMCP_IRQ_EVENT_CMD_DONE                    0x00000001
-
-/**
- * struct dpmcp_irq_cfg - IRQ configuration
- * @paddr:	Address that must be written to signal a message-based interrupt
- * @val:	Value to write into irq_addr address
- * @irq_num: A user defined number associated with this IRQ
- */
-struct dpmcp_irq_cfg {
-	     u64 paddr;
-	     u32 val;
-	     int irq_num;
-};
-
-int dpmcp_set_irq(struct fsl_mc_io *mc_io,
-		  u32 cmd_flags,
-		  u16 token,
-		  u8 irq_index,
-		  struct dpmcp_irq_cfg *irq_cfg);
-
-int dpmcp_get_irq(struct fsl_mc_io *mc_io,
-		  u32 cmd_flags,
-		  u16 token,
-		  u8 irq_index,
-		  int *type,
-		  struct dpmcp_irq_cfg *irq_cfg);
-
-int dpmcp_set_irq_enable(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 token,
-			 u8 irq_index,
-			 u8 en);
-
-int dpmcp_get_irq_enable(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 token,
-			 u8 irq_index,
-			 u8 *en);
-
-int dpmcp_set_irq_mask(struct fsl_mc_io *mc_io,
-		       u32 cmd_flags,
-		       u16 token,
-		       u8 irq_index,
-		       u32 mask);
-
-int dpmcp_get_irq_mask(struct fsl_mc_io *mc_io,
-		       u32 cmd_flags,
-		       u16 token,
-		       u8 irq_index,
-		       u32 *mask);
-
-int dpmcp_get_irq_status(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 token,
-			 u8 irq_index,
-			 u32 *status);
-
-/**
- * struct dpmcp_attr - Structure representing DPMCP attributes
- * @id:		DPMCP object ID
- */
-struct dpmcp_attr {
-	int id;
-};
-
-int dpmcp_get_attributes(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 token,
-			 struct dpmcp_attr *attr);
-
 #endif /* __FSL_DPMCP_H */
-- 
1.8.3.1