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mfd: cros_ec: Add USBPD charger commands and struct definitions.

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The USBPD charger driver gets information from the ChromeOS EC, this
patch adds the USBPD charger definitions needed by this driver.

Signed-off-by: Sameer Nanda <snanda@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Sameer Nanda 2018-05-02 17:44:16 +02:00 committed by Lee Jones
parent ce397d215c
commit 06635894a3
1 changed files with 128 additions and 4 deletions
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132
include/linux/mfd/cros_ec_commands.h
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@ -2593,14 +2593,18 @@ struct ec_params_current_limit {
} __packed;
/*
* Set maximum external power current.
* Set maximum external voltage / current.
*/
#define EC_CMD_EXT_POWER_CURRENT_LIMIT 0xa2
#define EC_CMD_EXTERNAL_POWER_LIMIT 0x00A2
struct ec_params_ext_power_current_limit {
uint32_t limit; /* in mA */
/* Command v0 is used only on Spring and is obsolete + unsupported */
struct ec_params_external_power_limit_v1 {
uint16_t current_lim; /* in mA, or EC_POWER_LIMIT_NONE to clear limit */
uint16_t voltage_lim; /* in mV, or EC_POWER_LIMIT_NONE to clear limit */
} __packed;
#define EC_POWER_LIMIT_NONE 0xffff
/* Inform the EC when entering a sleep state */
#define EC_CMD_HOST_SLEEP_EVENT 0xa9
@ -2974,6 +2978,12 @@ enum usb_chg_type {
USB_CHG_TYPE_VBUS,
USB_CHG_TYPE_UNKNOWN,
};
enum usb_power_roles {
USB_PD_PORT_POWER_DISCONNECTED,
USB_PD_PORT_POWER_SOURCE,
USB_PD_PORT_POWER_SINK,
USB_PD_PORT_POWER_SINK_NOT_CHARGING,
};
struct usb_chg_measures {
uint16_t voltage_max;
@ -2991,6 +3001,120 @@ struct ec_response_usb_pd_power_info {
uint32_t max_power;
} __packed;
struct ec_params_usb_pd_info_request {
uint8_t port;
} __packed;
/* Read USB-PD Device discovery info */
#define EC_CMD_USB_PD_DISCOVERY 0x0113
struct ec_params_usb_pd_discovery_entry {
uint16_t vid; /* USB-IF VID */
uint16_t pid; /* USB-IF PID */
uint8_t ptype; /* product type (hub,periph,cable,ama) */
} __packed;
/* Override default charge behavior */
#define EC_CMD_PD_CHARGE_PORT_OVERRIDE 0x0114
/* Negative port parameters have special meaning */
enum usb_pd_override_ports {
OVERRIDE_DONT_CHARGE = -2,
OVERRIDE_OFF = -1,
/* [0, CONFIG_USB_PD_PORT_COUNT): Port# */
};
struct ec_params_charge_port_override {
int16_t override_port; /* Override port# */
} __packed;
/* Read (and delete) one entry of PD event log */
#define EC_CMD_PD_GET_LOG_ENTRY 0x0115
struct ec_response_pd_log {
uint32_t timestamp; /* relative timestamp in milliseconds */
uint8_t type; /* event type : see PD_EVENT_xx below */
uint8_t size_port; /* [7:5] port number [4:0] payload size in bytes */
uint16_t data; /* type-defined data payload */
uint8_t payload[0]; /* optional additional data payload: 0..16 bytes */
} __packed;
/* The timestamp is the microsecond counter shifted to get about a ms. */
#define PD_LOG_TIMESTAMP_SHIFT 10 /* 1 LSB = 1024us */
#define PD_LOG_SIZE_MASK 0x1f
#define PD_LOG_PORT_MASK 0xe0
#define PD_LOG_PORT_SHIFT 5
#define PD_LOG_PORT_SIZE(port, size) (((port) << PD_LOG_PORT_SHIFT) | \
((size) & PD_LOG_SIZE_MASK))
#define PD_LOG_PORT(size_port) ((size_port) >> PD_LOG_PORT_SHIFT)
#define PD_LOG_SIZE(size_port) ((size_port) & PD_LOG_SIZE_MASK)
/* PD event log : entry types */
/* PD MCU events */
#define PD_EVENT_MCU_BASE 0x00
#define PD_EVENT_MCU_CHARGE (PD_EVENT_MCU_BASE+0)
#define PD_EVENT_MCU_CONNECT (PD_EVENT_MCU_BASE+1)
/* Reserved for custom board event */
#define PD_EVENT_MCU_BOARD_CUSTOM (PD_EVENT_MCU_BASE+2)
/* PD generic accessory events */
#define PD_EVENT_ACC_BASE 0x20
#define PD_EVENT_ACC_RW_FAIL (PD_EVENT_ACC_BASE+0)
#define PD_EVENT_ACC_RW_ERASE (PD_EVENT_ACC_BASE+1)
/* PD power supply events */
#define PD_EVENT_PS_BASE 0x40
#define PD_EVENT_PS_FAULT (PD_EVENT_PS_BASE+0)
/* PD video dongles events */
#define PD_EVENT_VIDEO_BASE 0x60
#define PD_EVENT_VIDEO_DP_MODE (PD_EVENT_VIDEO_BASE+0)
#define PD_EVENT_VIDEO_CODEC (PD_EVENT_VIDEO_BASE+1)
/* Returned in the "type" field, when there is no entry available */
#define PD_EVENT_NO_ENTRY 0xff
/*
* PD_EVENT_MCU_CHARGE event definition :
* the payload is "struct usb_chg_measures"
* the data field contains the port state flags as defined below :
*/
/* Port partner is a dual role device */
#define CHARGE_FLAGS_DUAL_ROLE BIT(15)
/* Port is the pending override port */
#define CHARGE_FLAGS_DELAYED_OVERRIDE BIT(14)
/* Port is the override port */
#define CHARGE_FLAGS_OVERRIDE BIT(13)
/* Charger type */
#define CHARGE_FLAGS_TYPE_SHIFT 3
#define CHARGE_FLAGS_TYPE_MASK (0xf << CHARGE_FLAGS_TYPE_SHIFT)
/* Power delivery role */
#define CHARGE_FLAGS_ROLE_MASK (7 << 0)
/*
* PD_EVENT_PS_FAULT data field flags definition :
*/
#define PS_FAULT_OCP 1
#define PS_FAULT_FAST_OCP 2
#define PS_FAULT_OVP 3
#define PS_FAULT_DISCH 4
/*
* PD_EVENT_VIDEO_CODEC payload is "struct mcdp_info".
*/
struct mcdp_version {
uint8_t major;
uint8_t minor;
uint16_t build;
} __packed;
struct mcdp_info {
uint8_t family[2];
uint8_t chipid[2];
struct mcdp_version irom;
struct mcdp_version fw;
} __packed;
/* struct mcdp_info field decoding */
#define MCDP_CHIPID(chipid) ((chipid[0] << 8) | chipid[1])
#define MCDP_FAMILY(family) ((family[0] << 8) | family[1])
/* Get info about USB-C SS muxes */
#define EC_CMD_USB_PD_MUX_INFO 0x11a