| // 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; |
| } |