Commit 9bdf43b3 authored by Yangbo Lu's avatar Yangbo Lu Committed by Greg Kroah-Hartman
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staging: fsl-dpaa2/rtc: add rtc driver 



This patch is to add driver for the DPAA2 1588 timer module (RTC)
which interfaces to up to an unlimited number of 10/100/1000 or
10G ethernet MACs, providing current time, alarm, and fiper support.
The 1588 IP control block includes these distinctive features.

- External GPIO trigger for time-stamping
- 2 Time-stamp alarms
- 3 FIPER pulse generators
- Phase adjusted output timer clock

Currently this driver only supports basic functions like
settime/gettime/adjtime/adjfreq.

Signed-off-by: default avatarYangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d08e2f97

drivers/staging/fsl-dpaa2/Kconfig

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@@ -24,3 +24,11 @@ config FSL_DPAA2_ETHSW 
	---help---

	Driver for Freescale DPAA2 Ethernet Switch. Select

	BRIDGE to have support for bridge tools.



config FSL_DPAA2_PTP_CLOCK

	tristate "Freescale DPAA2 PTP Clock"

	depends on FSL_DPAA2

	select PTP_1588_CLOCK

	help

	  This driver adds support for using the DPAA2 1588 timer module

	  as a PTP clock.

drivers/staging/fsl-dpaa2/Makefile

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@@ -4,3 +4,4 @@ 


obj-$(CONFIG_FSL_DPAA2_ETH)		+= ethernet/

obj-$(CONFIG_FSL_DPAA2_ETHSW)		+= ethsw/

obj-$(CONFIG_FSL_DPAA2_PTP_CLOCK)	+= rtc/

drivers/staging/fsl-dpaa2/rtc/Makefile

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#

# Makefile for the Freescale DPAA2 PTP clock

#



obj-$(CONFIG_FSL_DPAA2_PTP_CLOCK) += dpaa2-rtc.o



dpaa2-rtc-objs := rtc.o dprtc.o

drivers/staging/fsl-dpaa2/rtc/dprtc-cmd.h

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// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright 2013-2016 Freescale Semiconductor Inc.

 * Copyright 2016-2018 NXP

 */



#ifndef _FSL_DPRTC_CMD_H

#define _FSL_DPRTC_CMD_H



/* DPRTC Version */

#define DPRTC_VER_MAJOR			2

#define DPRTC_VER_MINOR			0



/* Command versioning */

#define DPRTC_CMD_BASE_VERSION		1

#define DPRTC_CMD_ID_OFFSET		4



#define DPRTC_CMD(id)	(((id) << DPRTC_CMD_ID_OFFSET) | DPRTC_CMD_BASE_VERSION)



/* Command IDs */

#define DPRTC_CMDID_CLOSE			DPRTC_CMD(0x800)

#define DPRTC_CMDID_OPEN			DPRTC_CMD(0x810)

#define DPRTC_CMDID_CREATE			DPRTC_CMD(0x910)

#define DPRTC_CMDID_DESTROY			DPRTC_CMD(0x990)

#define DPRTC_CMDID_GET_API_VERSION		DPRTC_CMD(0xa10)



#define DPRTC_CMDID_ENABLE			DPRTC_CMD(0x002)

#define DPRTC_CMDID_DISABLE			DPRTC_CMD(0x003)

#define DPRTC_CMDID_GET_ATTR			DPRTC_CMD(0x004)

#define DPRTC_CMDID_RESET			DPRTC_CMD(0x005)

#define DPRTC_CMDID_IS_ENABLED			DPRTC_CMD(0x006)



#define DPRTC_CMDID_SET_IRQ_ENABLE		DPRTC_CMD(0x012)

#define DPRTC_CMDID_GET_IRQ_ENABLE		DPRTC_CMD(0x013)

#define DPRTC_CMDID_SET_IRQ_MASK		DPRTC_CMD(0x014)

#define DPRTC_CMDID_GET_IRQ_MASK		DPRTC_CMD(0x015)

#define DPRTC_CMDID_GET_IRQ_STATUS		DPRTC_CMD(0x016)

#define DPRTC_CMDID_CLEAR_IRQ_STATUS		DPRTC_CMD(0x017)



#define DPRTC_CMDID_SET_CLOCK_OFFSET		DPRTC_CMD(0x1d0)

#define DPRTC_CMDID_SET_FREQ_COMPENSATION	DPRTC_CMD(0x1d1)

#define DPRTC_CMDID_GET_FREQ_COMPENSATION	DPRTC_CMD(0x1d2)

#define DPRTC_CMDID_GET_TIME			DPRTC_CMD(0x1d3)

#define DPRTC_CMDID_SET_TIME			DPRTC_CMD(0x1d4)

#define DPRTC_CMDID_SET_ALARM			DPRTC_CMD(0x1d5)

#define DPRTC_CMDID_SET_PERIODIC_PULSE		DPRTC_CMD(0x1d6)

#define DPRTC_CMDID_CLEAR_PERIODIC_PULSE	DPRTC_CMD(0x1d7)

#define DPRTC_CMDID_SET_EXT_TRIGGER		DPRTC_CMD(0x1d8)

#define DPRTC_CMDID_CLEAR_EXT_TRIGGER		DPRTC_CMD(0x1d9)

#define DPRTC_CMDID_GET_EXT_TRIGGER_TIMESTAMP	DPRTC_CMD(0x1dA)



/* Macros for accessing command fields smaller than 1byte */

#define DPRTC_MASK(field)        \

	GENMASK(DPRTC_##field##_SHIFT + DPRTC_##field##_SIZE - 1, \

		DPRTC_##field##_SHIFT)

#define dprtc_get_field(var, field)      \

	(((var) & DPRTC_MASK(field)) >> DPRTC_##field##_SHIFT)



#pragma pack(push, 1)

struct dprtc_cmd_open {

	__le32 dprtc_id;

};



struct dprtc_cmd_destroy {

	__le32 object_id;

};



#define DPRTC_ENABLE_SHIFT	0

#define DPRTC_ENABLE_SIZE	1



struct dprtc_rsp_is_enabled {

	u8 en;

};



struct dprtc_cmd_get_irq {

	__le32 pad;

	u8 irq_index;

};



struct dprtc_cmd_set_irq_enable {

	u8 en;

	u8 pad[3];

	u8 irq_index;

};



struct dprtc_rsp_get_irq_enable {

	u8 en;

};



struct dprtc_cmd_set_irq_mask {

	__le32 mask;

	u8 irq_index;

};



struct dprtc_rsp_get_irq_mask {

	__le32 mask;

};



struct dprtc_cmd_get_irq_status {

	__le32 status;

	u8 irq_index;

};



struct dprtc_rsp_get_irq_status {

	__le32 status;

};



struct dprtc_cmd_clear_irq_status {

	__le32 status;

	u8 irq_index;

};



struct dprtc_rsp_get_attributes {

	__le32 pad;

	__le32 id;

};



struct dprtc_cmd_set_clock_offset {

	__le64 offset;

};



struct dprtc_get_freq_compensation {

	__le32 freq_compensation;

};



struct dprtc_time {

	__le64 time;

};



struct dprtc_rsp_get_api_version {

	__le16 major;

	__le16 minor;

};



#pragma pack(pop)



#endif /* _FSL_DPRTC_CMD_H */

drivers/staging/fsl-dpaa2/rtc/dprtc.c

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// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright 2013-2016 Freescale Semiconductor Inc.

 * Copyright 2016-2018 NXP

 */



#include <linux/fsl/mc.h>



#include "dprtc.h"

#include "dprtc-cmd.h"



/**

 * dprtc_open() - Open a control session for the specified object.

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @dprtc_id:	DPRTC unique ID

 * @token:	Returned token; use in subsequent API calls

 *

 * This function can be used to open a control session for an

 * already created object; an object may have been declared in

 * the DPL or by calling the dprtc_create function.

 * This function returns a unique authentication token,

 * associated with the specific object ID and the specific MC

 * portal; this token must be used in all subsequent commands for

 * this specific object

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_open(struct fsl_mc_io *mc_io,

	       u32 cmd_flags,

	       int dprtc_id,

	       u16 *token)

{

	struct dprtc_cmd_open *cmd_params;

	struct fsl_mc_command cmd = { 0 };

	int err;



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_OPEN,

					  cmd_flags,

					  0);

	cmd_params = (struct dprtc_cmd_open *)cmd.params;

	cmd_params->dprtc_id = cpu_to_le32(dprtc_id);



	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	*token = mc_cmd_hdr_read_token(&cmd);



	return 0;

}



/**

 * dprtc_close() - Close the control session of the object

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPRTC object

 *

 * After this function is called, no further operations are

 * allowed on the object without opening a new control session.

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_close(struct fsl_mc_io *mc_io,

		u32 cmd_flags,

		u16 token)

{

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_CLOSE, cmd_flags,

					  token);



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_create() - Create the DPRTC 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

 *

 * Create the DPRTC object, allocate required resources and

 * perform required initialization.

 *

 * The function accepts an authentication token of a parent

 * container that this object should be assigned to. The token

 * can be '0' so the object will be assigned to the default container.

 * The newly created object can be opened with the returned

 * object id and using the container's associated tokens and MC portals.

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_create(struct fsl_mc_io *mc_io,

		 u16 dprc_token,

		 u32 cmd_flags,

		 const struct dprtc_cfg *cfg,

		 u32 *obj_id)

{

	struct fsl_mc_command cmd = { 0 };

	int err;



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_CREATE,

					  cmd_flags,

					  dprc_token);



	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	*obj_id = mc_cmd_read_object_id(&cmd);



	return 0;

}



/**

 * dprtc_destroy() - Destroy the DPRTC 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_'

 * @object_id:	The object id; it must be a valid id within the container that

 * created this object;

 *

 * The function accepts the authentication token of the parent container that

 * created the object (not the one that currently owns the object). The object

 * is searched within parent using the provided 'object_id'.

 * All tokens to the object must be closed before calling destroy.

 *

 * Return:	'0' on Success; error code otherwise.

 */

int dprtc_destroy(struct fsl_mc_io *mc_io,

		  u16 dprc_token,

		  u32 cmd_flags,

		  u32 object_id)

{

	struct dprtc_cmd_destroy *cmd_params;

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_DESTROY,

					  cmd_flags,

					  dprc_token);

	cmd_params = (struct dprtc_cmd_destroy *)cmd.params;

	cmd_params->object_id = cpu_to_le32(object_id);



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_enable() - Enable the DPRTC.

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPRTC object

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_enable(struct fsl_mc_io *mc_io,

		 u32 cmd_flags,

		 u16 token)

{

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_ENABLE, cmd_flags,

					  token);



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_disable() - Disable the DPRTC.

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPRTC object

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_disable(struct fsl_mc_io *mc_io,

		  u32 cmd_flags,

		  u16 token)

{

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_DISABLE,

					  cmd_flags,

					  token);



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_is_enabled() - Check if the DPRTC is enabled.

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPRTC object

 * @en:		Returns '1' if object is enabled; '0' otherwise

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_is_enabled(struct fsl_mc_io *mc_io,

		     u32 cmd_flags,

		     u16 token,

		     int *en)

{

	struct dprtc_rsp_is_enabled *rsp_params;

	struct fsl_mc_command cmd = { 0 };

	int err;



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_IS_ENABLED, cmd_flags,

					  token);



	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	rsp_params = (struct dprtc_rsp_is_enabled *)cmd.params;

	*en = dprtc_get_field(rsp_params->en, ENABLE);



	return 0;

}



/**

 * dprtc_reset() - Reset the DPRTC, 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_'

 * @token:	Token of DPRTC object

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_reset(struct fsl_mc_io *mc_io,

		u32 cmd_flags,

		u16 token)

{

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_RESET,

					  cmd_flags,

					  token);



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_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 DPRTC 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 dprtc_set_irq_enable(struct fsl_mc_io *mc_io,

			 u32 cmd_flags,

			 u16 token,

			 u8 irq_index,

			 u8 en)

{

	struct dprtc_cmd_set_irq_enable *cmd_params;

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_SET_IRQ_ENABLE,

					  cmd_flags,

					  token);

	cmd_params = (struct dprtc_cmd_set_irq_enable *)cmd.params;

	cmd_params->irq_index = irq_index;

	cmd_params->en = en;



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_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 DPRTC object

 * @irq_index:	The interrupt index to configure

 * @en:		Returned interrupt state - enable = 1, disable = 0

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_get_irq_enable(struct fsl_mc_io *mc_io,

			 u32 cmd_flags,

			 u16 token,

			 u8 irq_index,

			 u8 *en)

{

	struct dprtc_rsp_get_irq_enable *rsp_params;

	struct dprtc_cmd_get_irq *cmd_params;

	struct fsl_mc_command cmd = { 0 };

	int err;



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_GET_IRQ_ENABLE,

					  cmd_flags,

					  token);

	cmd_params = (struct dprtc_cmd_get_irq *)cmd.params;

	cmd_params->irq_index = irq_index;



	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	rsp_params = (struct dprtc_rsp_get_irq_enable *)cmd.params;

	*en = rsp_params->en;



	return 0;

}



/**

 * dprtc_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 DPRTC 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 dprtc_set_irq_mask(struct fsl_mc_io *mc_io,

		       u32 cmd_flags,

		       u16 token,

		       u8 irq_index,

		       u32 mask)

{

	struct dprtc_cmd_set_irq_mask *cmd_params;

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_SET_IRQ_MASK,

					  cmd_flags,

					  token);

	cmd_params = (struct dprtc_cmd_set_irq_mask *)cmd.params;

	cmd_params->mask = cpu_to_le32(mask);

	cmd_params->irq_index = irq_index;



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_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 DPRTC 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 dprtc_get_irq_mask(struct fsl_mc_io *mc_io,

		       u32 cmd_flags,

		       u16 token,

		       u8 irq_index,

		       u32 *mask)

{

	struct dprtc_rsp_get_irq_mask *rsp_params;

	struct dprtc_cmd_get_irq *cmd_params;

	struct fsl_mc_command cmd = { 0 };

	int err;



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_GET_IRQ_MASK,

					  cmd_flags,

					  token);

	cmd_params = (struct dprtc_cmd_get_irq *)cmd.params;

	cmd_params->irq_index = irq_index;



	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	rsp_params = (struct dprtc_rsp_get_irq_mask *)cmd.params;

	*mask = le32_to_cpu(rsp_params->mask);



	return 0;

}



/**

 * dprtc_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 DPRTC 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 dprtc_get_irq_status(struct fsl_mc_io *mc_io,

			 u32 cmd_flags,

			 u16 token,

			 u8 irq_index,

			 u32 *status)

{

	struct dprtc_cmd_get_irq_status *cmd_params;

	struct dprtc_rsp_get_irq_status *rsp_params;

	struct fsl_mc_command cmd = { 0 };

	int err;



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_GET_IRQ_STATUS,

					  cmd_flags,

					  token);

	cmd_params = (struct dprtc_cmd_get_irq_status *)cmd.params;

	cmd_params->status = cpu_to_le32(*status);

	cmd_params->irq_index = irq_index;



	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	rsp_params = (struct dprtc_rsp_get_irq_status *)cmd.params;

	*status = le32_to_cpu(rsp_params->status);



	return 0;

}



/**

 * dprtc_clear_irq_status() - Clear a pending interrupt's status

 *

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPRTC object

 * @irq_index:	The interrupt index to configure

 * @status:	Bits to clear (W1C) - one bit per cause:

 *			0 = don't change

 *			1 = clear status bit

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_clear_irq_status(struct fsl_mc_io *mc_io,

			   u32 cmd_flags,

			   u16 token,

			   u8 irq_index,

			   u32 status)

{

	struct dprtc_cmd_clear_irq_status *cmd_params;

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_CLEAR_IRQ_STATUS,

					  cmd_flags,

					  token);

	cmd_params = (struct dprtc_cmd_clear_irq_status *)cmd.params;

	cmd_params->irq_index = irq_index;

	cmd_params->status = cpu_to_le32(status);



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_get_attributes - Retrieve DPRTC 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 DPRTC object

 * @attr:	Returned object's attributes

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_get_attributes(struct fsl_mc_io *mc_io,

			 u32 cmd_flags,

			 u16 token,

			 struct dprtc_attr *attr)

{

	struct dprtc_rsp_get_attributes *rsp_params;

	struct fsl_mc_command cmd = { 0 };

	int err;



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_GET_ATTR,

					  cmd_flags,

					  token);



	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	rsp_params = (struct dprtc_rsp_get_attributes *)cmd.params;

	attr->id = le32_to_cpu(rsp_params->id);



	return 0;

}



/**

 * dprtc_set_clock_offset() - Sets the clock's offset

 * (usually relative to another clock).

 *

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPRTC object

 * @offset:	New clock offset (in nanoseconds).

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_set_clock_offset(struct fsl_mc_io *mc_io,

			   u32 cmd_flags,

			   u16 token,

			   int64_t offset)

{

	struct dprtc_cmd_set_clock_offset *cmd_params;

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_SET_CLOCK_OFFSET,

					  cmd_flags,

					  token);

	cmd_params = (struct dprtc_cmd_set_clock_offset *)cmd.params;

	cmd_params->offset = cpu_to_le64(offset);



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_set_freq_compensation() - Sets a new frequency compensation value.

 *

 * @mc_io:		Pointer to MC portal's I/O object

 * @cmd_flags:		Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:		Token of DPRTC object

 * @freq_compensation:	The new frequency compensation value to set.

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_set_freq_compensation(struct fsl_mc_io *mc_io,

				u32 cmd_flags,

				u16 token,

				u32 freq_compensation)

{

	struct dprtc_get_freq_compensation *cmd_params;

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_SET_FREQ_COMPENSATION,

					  cmd_flags,

					  token);

	cmd_params = (struct dprtc_get_freq_compensation *)cmd.params;

	cmd_params->freq_compensation = cpu_to_le32(freq_compensation);



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_get_freq_compensation() - Retrieves the frequency compensation value

 *

 * @mc_io:		Pointer to MC portal's I/O object

 * @cmd_flags:		Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:		Token of DPRTC object

 * @freq_compensation:	Frequency compensation value

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_get_freq_compensation(struct fsl_mc_io *mc_io,

				u32 cmd_flags,

				u16 token,

				u32 *freq_compensation)

{

	struct dprtc_get_freq_compensation *rsp_params;

	struct fsl_mc_command cmd = { 0 };

	int err;



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_GET_FREQ_COMPENSATION,

					  cmd_flags,

					  token);



	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	rsp_params = (struct dprtc_get_freq_compensation *)cmd.params;

	*freq_compensation = le32_to_cpu(rsp_params->freq_compensation);



	return 0;

}



/**

 * dprtc_get_time() - Returns the current RTC time.

 *

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPRTC object

 * @time:	Current RTC time.

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_get_time(struct fsl_mc_io *mc_io,

		   u32 cmd_flags,

		   u16 token,

		   uint64_t *time)

{

	struct dprtc_time *rsp_params;

	struct fsl_mc_command cmd = { 0 };

	int err;



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_GET_TIME,

					  cmd_flags,

					  token);



	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	rsp_params = (struct dprtc_time *)cmd.params;

	*time = le64_to_cpu(rsp_params->time);



	return 0;

}



/**

 * dprtc_set_time() - Updates current RTC time.

 *

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPRTC object

 * @time:	New RTC time.

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_set_time(struct fsl_mc_io *mc_io,

		   u32 cmd_flags,

		   u16 token,

		   uint64_t time)

{

	struct dprtc_time *cmd_params;

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_SET_TIME,

					  cmd_flags,

					  token);

	cmd_params = (struct dprtc_time *)cmd.params;

	cmd_params->time = cpu_to_le64(time);



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_set_alarm() - Defines and sets alarm.

 *

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPRTC object

 * @time:	In nanoseconds, the time when the alarm

 *			should go off - must be a multiple of

 *			1 microsecond

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dprtc_set_alarm(struct fsl_mc_io *mc_io,

		    u32 cmd_flags,

		    u16 token, uint64_t time)

{

	struct dprtc_time *cmd_params;

	struct fsl_mc_command cmd = { 0 };



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_SET_ALARM,

					  cmd_flags,

					  token);

	cmd_params = (struct dprtc_time *)cmd.params;

	cmd_params->time = cpu_to_le64(time);



	return mc_send_command(mc_io, &cmd);

}



/**

 * dprtc_get_api_version() - Get Data Path Real Time Counter API version

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @major_ver:	Major version of data path real time counter API

 * @minor_ver:	Minor version of data path real time counter API

 *

 * Return:  '0' on Success; Error code otherwise.

 */

int dprtc_get_api_version(struct fsl_mc_io *mc_io,

			  u32 cmd_flags,

			  u16 *major_ver,

			  u16 *minor_ver)

{

	struct dprtc_rsp_get_api_version *rsp_params;

	struct fsl_mc_command cmd = { 0 };

	int err;



	cmd.header = mc_encode_cmd_header(DPRTC_CMDID_GET_API_VERSION,

					  cmd_flags,

					  0);



	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	rsp_params = (struct dprtc_rsp_get_api_version *)cmd.params;

	*major_ver = le16_to_cpu(rsp_params->major);

	*minor_ver = le16_to_cpu(rsp_params->minor);



	return 0;

}

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