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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_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);
}
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