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firmware: scmi: voltage regulator

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Implement voltage regulators interfaced by the SCMI voltage domain
protocol. The DT bindings are defined in the Linux kernel since
SCMI voltage domain and regulators patches [1] and [2] integration
in v5.11-rc7.

Link: [1] 0f80fcec08
Link: [2] 2add5cacff
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
This commit is contained in:
Etienne Carriere 2021-03-08 22:38:06 +01:00 • committed by Tom Rini
parent d46933839f
commit 1f213ee4db
6 changed files with 361 additions and 0 deletions
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113
include/scmi_protocols.h
View file

@ -23,6 +23,7 @@ enum scmi_std_protocol {
SCMI_PROTOCOL_ID_CLOCK = 0x14,
SCMI_PROTOCOL_ID_SENSOR = 0x15,
SCMI_PROTOCOL_ID_RESET_DOMAIN = 0x16,
SCMI_PROTOCOL_ID_VOLTAGE_DOMAIN = 0x17,
};
enum scmi_status_code {
@ -176,4 +177,116 @@ struct scmi_rd_reset_out {
s32 status;
};
/*
* SCMI Voltage Domain Protocol
*/
enum scmi_voltage_domain_message_id {
SCMI_VOLTAGE_DOMAIN_ATTRIBUTES = 0x3,
SCMI_VOLTAGE_DOMAIN_CONFIG_SET = 0x5,
SCMI_VOLTAGE_DOMAIN_CONFIG_GET = 0x6,
SCMI_VOLTAGE_DOMAIN_LEVEL_SET = 0x7,
SCMI_VOLTAGE_DOMAIN_LEVEL_GET = 0x8,
};
#define SCMI_VOLTD_NAME_LEN 16
#define SCMI_VOLTD_CONFIG_MASK GENMASK(3, 0)
#define SCMI_VOLTD_CONFIG_OFF 0
#define SCMI_VOLTD_CONFIG_ON 0x7
/**
* struct scmi_voltd_attr_in - Payload for VOLTAGE_DOMAIN_ATTRIBUTES message
* @domain_id: SCMI voltage domain ID
*/
struct scmi_voltd_attr_in {
u32 domain_id;
};
/**
* struct scmi_voltd_attr_out - Payload for VOLTAGE_DOMAIN_ATTRIBUTES response
* @status: SCMI command status
* @attributes: Retrieved attributes of the voltage domain
* @name: Voltage domain name
*/
struct scmi_voltd_attr_out {
s32 status;
u32 attributes;
char name[SCMI_VOLTD_NAME_LEN];
};
/**
* struct scmi_voltd_config_set_in - Message payload for VOLTAGE_CONFIG_SET cmd
* @domain_id: SCMI voltage domain ID
* @config: Configuration data of the voltage domain
*/
struct scmi_voltd_config_set_in {
u32 domain_id;
u32 config;
};
/**
* struct scmi_voltd_config_set_out - Response for VOLTAGE_CONFIG_SET command
* @status: SCMI command status
*/
struct scmi_voltd_config_set_out {
s32 status;
};
/**
* struct scmi_voltd_config_get_in - Message payload for VOLTAGE_CONFIG_GET cmd
* @domain_id: SCMI voltage domain ID
*/
struct scmi_voltd_config_get_in {
u32 domain_id;
};
/**
* struct scmi_voltd_config_get_out - Response for VOLTAGE_CONFIG_GET command
* @status: SCMI command status
* @config: Configuration data of the voltage domain
*/
struct scmi_voltd_config_get_out {
s32 status;
u32 config;
};
/**
* struct scmi_voltd_level_set_in - Message payload for VOLTAGE_LEVEL_SET cmd
* @domain_id: SCMI voltage domain ID
* @flags: Parameter flags for configuring target level
* @voltage_level: Target voltage level in microvolts (uV)
*/
struct scmi_voltd_level_set_in {
u32 domain_id;
u32 flags;
s32 voltage_level;
};
/**
* struct scmi_voltd_level_set_out - Response for VOLTAGE_LEVEL_SET command
* @status: SCMI command status
*/
struct scmi_voltd_level_set_out {
s32 status;
};
/**
* struct scmi_voltd_level_get_in - Message payload for VOLTAGE_LEVEL_GET cmd
* @domain_id: SCMI voltage domain ID
*/
struct scmi_voltd_level_get_in {
u32 domain_id;
};
/**
* struct scmi_voltd_level_get_out - Response for VOLTAGE_LEVEL_GET command
* @status: SCMI command status
* @voltage_level: Voltage level in microvolts (uV)
*/
struct scmi_voltd_level_get_out {
s32 status;
s32 voltage_level;
};
#endif /* _SCMI_PROTOCOLS_H */