[PATCH v2 5/8] mfd: cros_ec: Add more definitions for PD commands

From: Tomeu Vizoso
Date: Fri Feb 12 2016 - 07:58:10 EST

Copy a few structs and commands from the EC firmware headers so we can
communicate with the EC regarding PD functionality.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---

Changes in v2: None

include/linux/mfd/cros_ec_commands.h | 324 ++++++++++++++++++++++++++++++++++-
1 file changed, 319 insertions(+), 5 deletions(-)

diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index d86526f0bd8e..4f056d2747ff 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -286,6 +286,9 @@ enum host_event_code {
/* Hang detect logic detected a hang and warm rebooted the AP */
EC_HOST_EVENT_HANG_REBOOT = 21,

+ /* PD MCU triggering host event */
+ EC_HOST_EVENT_PD_MCU = 22,
+
/*
* The high bit of the event mask is not used as a host event code. If
* it reads back as set, then the entire event mask should be
@@ -2273,6 +2276,13 @@ struct ec_params_ext_power_current_limit {
uint32_t limit; /* in mA */
} __packed;

+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
+
/*****************************************************************************/
/* Smart battery pass-through */

@@ -2527,8 +2537,6 @@ struct ec_params_reboot_ec {
*/
#define EC_CMD_VERSION0 0xdc

-#endif /* !__ACPI__ */
-
/*****************************************************************************/
/*
* PD commands
@@ -2538,16 +2546,51 @@ struct ec_params_reboot_ec {

/* EC to PD MCU exchange status command */
#define EC_CMD_PD_EXCHANGE_STATUS 0x100
+#define EC_VER_PD_EXCHANGE_STATUS 2
+
+enum pd_charge_state {
+ PD_CHARGE_NO_CHANGE = 0, /* Don't change charge state */
+ PD_CHARGE_NONE, /* No charging allowed */
+ PD_CHARGE_5V, /* 5V charging only */
+ PD_CHARGE_MAX /* Charge at max voltage */
+};

/* Status of EC being sent to PD */
+#define EC_STATUS_HIBERNATING (1 << 0)
+
struct ec_params_pd_status {
- int8_t batt_soc; /* battery state of charge */
+ uint8_t status; /* EC status */
+ int8_t batt_soc; /* battery state of charge */
+ uint8_t charge_state; /* charging state (from enum pd_charge_state) */
} __packed;

/* Status of PD being sent back to EC */
+#define PD_STATUS_HOST_EVENT (1 << 0) /* Forward host event to AP */
+#define PD_STATUS_IN_RW (1 << 1) /* Running RW image */
+#define PD_STATUS_JUMPED_TO_IMAGE (1 << 2) /* Current image was jumped to */
+#define PD_STATUS_TCPC_ALERT_0 (1 << 3) /* Alert active in port 0 TCPC */
+#define PD_STATUS_TCPC_ALERT_1 (1 << 4) /* Alert active in port 1 TCPC */
+#define PD_STATUS_TCPC_ALERT_2 (1 << 5) /* Alert active in port 2 TCPC */
+#define PD_STATUS_TCPC_ALERT_3 (1 << 6) /* Alert active in port 3 TCPC */
+#define PD_STATUS_EC_INT_ACTIVE (PD_STATUS_TCPC_ALERT_0 | \
+ PD_STATUS_TCPC_ALERT_1 | \
+ PD_STATUS_HOST_EVENT)
struct ec_response_pd_status {
- int8_t status; /* PD MCU status */
- uint32_t curr_lim_ma; /* input current limit */
+ uint32_t curr_lim_ma; /* input current limit */
+ uint16_t status; /* PD MCU status */
+ int8_t active_charge_port; /* active charging port */
+} __packed;
+
+/* AP to PD MCU host event status command, cleared on read */
+#define EC_CMD_PD_HOST_EVENT_STATUS 0x104
+
+/* PD MCU host event status bits */
+#define PD_EVENT_UPDATE_DEVICE (1 << 0)
+#define PD_EVENT_POWER_CHANGE (1 << 1)
+#define PD_EVENT_IDENTITY_RECEIVED (1 << 2)
+#define PD_EVENT_DATA_SWAP (1 << 3)
+struct ec_response_host_event_status {
+ uint32_t status; /* PD MCU host event status */
} __packed;

/* Set USB type-C port role and muxes */
@@ -2559,6 +2602,7 @@ enum usb_pd_control_role {
USB_PD_CTRL_ROLE_TOGGLE_OFF = 2,
USB_PD_CTRL_ROLE_FORCE_SINK = 3,
USB_PD_CTRL_ROLE_FORCE_SOURCE = 4,
+ USB_PD_CTRL_ROLE_COUNT
};

enum usb_pd_control_mux {
@@ -2568,14 +2612,284 @@ enum usb_pd_control_mux {
USB_PD_CTRL_MUX_DP = 3,
USB_PD_CTRL_MUX_DOCK = 4,
USB_PD_CTRL_MUX_AUTO = 5,
+ USB_PD_CTRL_MUX_COUNT
+};
+
+enum usb_pd_control_swap {
+ USB_PD_CTRL_SWAP_NONE = 0,
+ USB_PD_CTRL_SWAP_DATA = 1,
+ USB_PD_CTRL_SWAP_POWER = 2,
+ USB_PD_CTRL_SWAP_VCONN = 3,
+ USB_PD_CTRL_SWAP_COUNT
};

struct ec_params_usb_pd_control {
uint8_t port;
uint8_t role;
uint8_t mux;
+ uint8_t swap;
+} __packed;
+
+#define PD_CTRL_RESP_ENABLED_COMMS (1 << 0) /* Communication enabled */
+#define PD_CTRL_RESP_ENABLED_CONNECTED (1 << 1) /* Device connected */
+#define PD_CTRL_RESP_ENABLED_PD_CAPABLE (1 << 2) /* Partner is PD capable */
+
+#define PD_CTRL_RESP_ROLE_POWER (1 << 0) /* 0=SNK/1=SRC */
+#define PD_CTRL_RESP_ROLE_DATA (1 << 1) /* 0=UFP/1=DFP */
+#define PD_CTRL_RESP_ROLE_VCONN (1 << 2) /* Vconn status */
+#define PD_CTRL_RESP_ROLE_DR_POWER (1 << 3) /* Partner is dualrole power */
+#define PD_CTRL_RESP_ROLE_DR_DATA (1 << 4) /* Partner is dualrole data */
+#define PD_CTRL_RESP_ROLE_USB_COMM (1 << 5) /* Partner USB comm capable */
+#define PD_CTRL_RESP_ROLE_EXT_POWERED (1 << 6) /* Partner externally powerd */
+
+struct ec_response_usb_pd_control {
+ uint8_t enabled;
+ uint8_t role;
+ uint8_t polarity;
+ uint8_t state;
+} __packed;
+
+struct ec_response_usb_pd_control_v1 {
+ uint8_t enabled;
+ uint8_t role;
+ uint8_t polarity;
+ char state[32];
+} __packed;
+
+#define EC_CMD_USB_PD_PORTS 0x102
+
+struct ec_response_usb_pd_ports {
+ uint8_t num_ports;
+} __packed;
+
+#define EC_CMD_USB_PD_POWER_INFO 0x103
+
+#define PD_POWER_CHARGING_PORT 0xff
+struct ec_params_usb_pd_power_info {
+ uint8_t port;
+} __packed;
+
+enum usb_chg_type {
+ USB_CHG_TYPE_NONE,
+ USB_CHG_TYPE_PD,
+ USB_CHG_TYPE_C,
+ USB_CHG_TYPE_PROPRIETARY,
+ USB_CHG_TYPE_BC12_DCP,
+ USB_CHG_TYPE_BC12_CDP,
+ USB_CHG_TYPE_BC12_SDP,
+ USB_CHG_TYPE_OTHER,
+ 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;
+ uint16_t voltage_now;
+ uint16_t current_max;
+ uint16_t current_lim;
+} __packed;
+
+struct ec_response_usb_pd_power_info {
+ uint8_t role;
+ uint8_t type;
+ uint8_t dualrole;
+ uint8_t reserved1;
+ struct usb_chg_measures meas;
+ uint32_t max_power;
+} __packed;
+
+/* Write USB-PD device FW */
+#define EC_CMD_USB_PD_FW_UPDATE 0x110
+
+enum usb_pd_fw_update_cmds {
+ USB_PD_FW_REBOOT,
+ USB_PD_FW_FLASH_ERASE,
+ USB_PD_FW_FLASH_WRITE,
+ USB_PD_FW_ERASE_SIG,
+};
+
+struct ec_params_usb_pd_fw_update {
+ uint16_t dev_id;
+ uint8_t cmd;
+ uint8_t port;
+ uint32_t size; /* Size to write in bytes */
+ /* Followed by data to write */
+} __packed;
+
+/* Write USB-PD Accessory RW_HASH table entry */
+#define EC_CMD_USB_PD_RW_HASH_ENTRY 0x111
+/* RW hash is first 20 bytes of SHA-256 of RW section */
+#define PD_RW_HASH_SIZE 20
+struct ec_params_usb_pd_rw_hash_entry {
+ uint16_t dev_id;
+ uint8_t dev_rw_hash[PD_RW_HASH_SIZE];
+ uint8_t reserved; /* For alignment of current_image */
+ uint32_t current_image; /* One of ec_current_image */
+} __packed;
+
+/* Read USB-PD Accessory info */
+#define EC_CMD_USB_PD_DEV_INFO 0x112
+
+struct ec_params_usb_pd_info_request {
+ uint8_t port;
+} __packed;
+
+/* Read USB-PD Device discovery info */
+#define EC_CMD_USB_PD_DISCOVERY 0x113
+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 0x114
+
+/* 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 0x115
+
+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 (1 << 15)
+/* Port is the pending override port */
+#define CHARGE_FLAGS_DELAYED_OVERRIDE (1 << 14)
+/* Port is the override port */
+#define CHARGE_FLAGS_OVERRIDE (1 << 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/Set USB-PD Alternate mode info */
+#define EC_CMD_USB_PD_GET_AMODE 0x116
+struct ec_params_usb_pd_get_mode_request {
+ uint16_t svid_idx; /* SVID index to get */
+ uint8_t port; /* port */
+} __packed;
+
+struct ec_params_usb_pd_get_mode_response {
+ uint16_t svid; /* SVID */
+ uint16_t opos; /* Object Position */
+ uint32_t vdo[6]; /* Mode VDOs */
+} __packed;
+
+#define EC_CMD_USB_PD_SET_AMODE 0x117
+
+enum pd_mode_cmd {
+ PD_EXIT_MODE = 0,
+ PD_ENTER_MODE = 1,
+ /* Not a command. Do NOT remove. */
+ PD_MODE_CMD_COUNT,
+};
+
+struct ec_params_usb_pd_set_mode_request {
+ uint32_t cmd; /* enum pd_mode_cmd */
+ uint16_t svid; /* SVID to set */
+ uint8_t opos; /* Object Position */
+ uint8_t port; /* port */
+} __packed;
+
+/* Ask the PD MCU to record a log of a requested type */
+#define EC_CMD_PD_WRITE_LOG_ENTRY 0x118
+
+struct ec_params_pd_write_log_entry {
+ uint8_t type; /* event type : see PD_EVENT_xx above */
+ uint8_t port; /* port#, or 0 for events unrelated to a given port */
+} __packed;
+
+#endif /* !__ACPI__ */
+
/*****************************************************************************/
/*
* Passthru commands
--
2.5.0