linux/drivers/firmware/arm_scmi/voltage.c

// SPDX-License-Identifier: GPL-2.0
/*
 * System Control and Management Interface (SCMI) Voltage Protocol
 *
 * Copyright (C) 2020-2022 ARM Ltd.
 */

#include <linux/module.h>
#include <linux/scmi_protocol.h>

#include "protocols.h"

/* Updated only after ALL the mandatory features for that version are merged */
#define SCMI_PROTOCOL_SUPPORTED_VERSION …

#define VOLTAGE_DOMS_NUM_MASK …
#define REMAINING_LEVELS_MASK …
#define RETURNED_LEVELS_MASK …

enum scmi_voltage_protocol_cmd { … };

#define NUM_VOLTAGE_DOMAINS(x) …

struct scmi_msg_resp_domain_attributes { … };

struct scmi_msg_cmd_describe_levels { … };

struct scmi_msg_resp_describe_levels { … };

struct scmi_msg_cmd_config_set { … };

struct scmi_msg_cmd_level_set { … };

struct scmi_resp_voltage_level_set_complete { … };

struct voltage_info { … };

static int scmi_protocol_attributes_get(const struct scmi_protocol_handle *ph,
					struct voltage_info *vinfo)
{ … }

static int scmi_init_voltage_levels(struct device *dev,
				    struct scmi_voltage_info *v,
				    u32 num_returned, u32 num_remaining,
				    bool segmented)
{ … }

struct scmi_volt_ipriv { … };

static void iter_volt_levels_prepare_message(void *message,
					     unsigned int desc_index,
					     const void *priv)
{ … }

static int iter_volt_levels_update_state(struct scmi_iterator_state *st,
					 const void *response, void *priv)
{ … }

static int
iter_volt_levels_process_response(const struct scmi_protocol_handle *ph,
				  const void *response,
				  struct scmi_iterator_state *st, void *priv)
{ … }

static int scmi_voltage_levels_get(const struct scmi_protocol_handle *ph,
				   struct scmi_voltage_info *v)
{ … }

static int scmi_voltage_descriptors_get(const struct scmi_protocol_handle *ph,
					struct voltage_info *vinfo)
{ … }

static int __scmi_voltage_get_u32(const struct scmi_protocol_handle *ph,
				  u8 cmd_id, u32 domain_id, u32 *value)
{ … }

static int scmi_voltage_config_set(const struct scmi_protocol_handle *ph,
				   u32 domain_id, u32 config)
{ … }

static int scmi_voltage_config_get(const struct scmi_protocol_handle *ph,
				   u32 domain_id, u32 *config)
{ … }

static int scmi_voltage_level_set(const struct scmi_protocol_handle *ph,
				  u32 domain_id,
				  enum scmi_voltage_level_mode mode,
				  s32 volt_uV)
{ … }

static int scmi_voltage_level_get(const struct scmi_protocol_handle *ph,
				  u32 domain_id, s32 *volt_uV)
{ … }

static const struct scmi_voltage_info * __must_check
scmi_voltage_info_get(const struct scmi_protocol_handle *ph, u32 domain_id)
{ … }

static int scmi_voltage_domains_num_get(const struct scmi_protocol_handle *ph)
{ … }

static struct scmi_voltage_proto_ops voltage_proto_ops = …;

static int scmi_voltage_protocol_init(const struct scmi_protocol_handle *ph)
{ … }

static const struct scmi_protocol scmi_voltage = …;

DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(voltage, scmi_voltage)