* @param dev CROS-EC device
* @param id Place to put the ID
* @param maxlen Maximum length of the ID field
- * @return 0 if ok, -1 on error
+ * Return: 0 if ok, -1 on error
*/
int cros_ec_read_id(struct udevice *dev, char *id, int maxlen);
*
* @param dev CROS-EC device
* @param scan Place to put the scan results
- * @return 0 if ok, -1 on error
+ * Return: 0 if ok, -1 on error
*/
int cros_ec_scan_keyboard(struct udevice *dev, struct mbkp_keyscan *scan);
* Send a message requesting the next event and return the result.
*
* @param event Place to put the event.
- * @return 0 if ok, <0 on error.
+ * Return: 0 if ok, <0 on error.
*/
int cros_ec_get_next_event(struct udevice *dev,
struct ec_response_get_next_event *event);
*
* @param dev CROS-EC device
* @param image Destination for image identifier
- * @return 0 if ok, <0 on error
+ * Return: 0 if ok, <0 on error
*/
int cros_ec_read_current_image(struct udevice *dev,
enum ec_current_image *image);
* @param dev CROS-EC device
* @param hash_offset Offset in flash to read from
* @param hash Destination for hash information
- * @return 0 if ok, <0 on error
+ * Return: 0 if ok, <0 on error
*/
int cros_ec_read_hash(struct udevice *dev, uint hash_offset,
struct ec_response_vboot_hash *hash);
* @param dev CROS-EC device
* @param cmd Reboot command
* @param flags Flags for reboot command (EC_REBOOT_FLAG_*)
- * @return 0 if ok, <0 on error
+ * Return: 0 if ok, <0 on error
*/
int cros_ec_reboot(struct udevice *dev, enum ec_reboot_cmd cmd, uint8_t flags);
* If no external interrupt is configured, this always returns 1.
*
* @param dev CROS-EC device
- * @return 0 if no interrupt is pending
+ * Return: 0 if no interrupt is pending
*/
int cros_ec_interrupt_pending(struct udevice *dev);
*
* @param blob Device tree blob containing setup information
* @param cros_ecp Returns pointer to the cros_ec device, or NULL if none
- * @return 0 if we got an cros_ec device and all is well (or no cros_ec is
+ * Return: 0 if we got an cros_ec device and all is well (or no cros_ec is
* expected), -ve if we should have an cros_ec device but failed to find
* one, or init failed (-CROS_EC_ERR_...).
*/
*
* @param dev CROS-EC device
* @param events_ptr Destination for event flags. Not changed on error.
- * @return 0 if ok, <0 on error
+ * Return: 0 if ok, <0 on error
*/
int cros_ec_get_host_events(struct udevice *dev, uint32_t *events_ptr);
*
* @param dev CROS-EC device
* @param events Event flags to clear
- * @return 0 if ok, <0 on error
+ * Return: 0 if ok, <0 on error
*/
int cros_ec_clear_host_events(struct udevice *dev, uint32_t events);
* @param set_flags New flag values; only bits in set_mask are applied;
* ignored if set_mask=0.
* @param prot Destination for updated protection state from EC.
- * @return 0 if ok, <0 on error
+ * Return: 0 if ok, <0 on error
*/
int cros_ec_flash_protect(struct udevice *dev, uint32_t set_mask,
uint32_t set_flags,
struct ec_response_flash_protect *resp);
/**
- * Notify EC of current boot mode
- *
- * @param dev CROS-EC device
- * @param vboot_mode Verified boot mode
- * @return 0 if ok, <0 on error
- */
-int cros_ec_entering_mode(struct udevice *dev, int mode);
-
-/**
* Run internal tests on the cros_ec interface.
*
* @param dev CROS-EC device
- * @return 0 if ok, <0 if the test failed
+ * Return: 0 if ok, <0 if the test failed
*/
int cros_ec_test(struct udevice *dev);
* @param dev CROS-EC device
* @param image the content to write
* @param imafge_size content length
- * @return 0 if ok, <0 if the test failed
+ * Return: 0 if ok, <0 if the test failed
*/
int cros_ec_flash_update_rw(struct udevice *dev, const uint8_t *image,
int image_size);
/**
* Return a pointer to the board's CROS-EC device
*
- * @return pointer to CROS-EC device, or NULL if none is available
+ * Return: pointer to CROS-EC device, or NULL if none is available
*/
struct udevice *board_get_cros_ec_dev(void);
struct dm_cros_ec_ops {
+ /**
+ * check_version() - Check the protocol version being used (optional)
+ *
+ * If provided, this function should check that the EC can be supported
+ * by the driver. If not provided, HELLO messages will be sent to try
+ * to determine the protocol version.
+ *
+ * @dev: Device to check
+ * @return 0 if the protocol is valid, -ve if not supported
+ */
int (*check_version)(struct udevice *dev);
+
+ /**
+ * command() - Old-style command interface
+ *
+ * This sends a command and receives a response (deprecated, use
+ * packet())
+ *
+ * @dev: Device to use
+ * @cmd: Command to send (only supports 0-0xff)
+ * @cmd_version: Version of command to send (often 0)
+ * @dout: Output data (may be NULL If dout_len=0)
+ * @dout_len: Length of output data excluding 4-byte header
+ * @dinp: On input, set to point to input data, often struct
+ * cros_ec_dev->din - typically this is left alone but may be
+ * updated by the driver
+ * @din_len: Maximum length of response
+ * @return number of bytes in response, or -ve on error
+ */
int (*command)(struct udevice *dev, uint8_t cmd, int cmd_version,
const uint8_t *dout, int dout_len,
uint8_t **dinp, int din_len);
+
+ /**
+ * packet() - New-style command interface
+ *
+ * This interface is preferred over command(), since it is typically
+ * easier to implement.
+ *
+ * @dev: Device to use
+ * @out_bytes: Number of bytes to send (from struct cros_ec_dev->dout)
+ * @in_bytes: Maximum number of bytes to expect in response
+ * @return number of bytes in response, or -ve on error
+ */
int (*packet)(struct udevice *dev, int out_bytes, int in_bytes);
+
+ /**
+ * get_switches() - Get value of EC switches
+ *
+ * This is currently supported on the LPC EC.
+ *
+ * @dev: Device to use
+ * @return current switches value, or -ENOSYS if not supported
+ */
+ int (*get_switches)(struct udevice *dev);
};
#define dm_cros_ec_get_ops(dev) \
*
* @param data Data block to checksum
* @param size Size of data block in bytes
- * @return checksum value (0 to 255)
+ * Return: checksum value (0 to 255)
*/
int cros_ec_calc_checksum(const uint8_t *data, int size);
* @param data Pointer to data buffer to read into
* @param offset Offset within flash to read from
* @param size Number of bytes to read
- * @return 0 if ok, -1 on error
+ * Return: 0 if ok, -1 on error
*/
int cros_ec_flash_read(struct udevice *dev, uint8_t *data, uint32_t offset,
uint32_t size);
* @param data Pointer to data buffer to write
* @param offset Offset within flash to write to.
* @param size Number of bytes to write
- * @return 0 if ok, -1 on error
+ * Return: 0 if ok, -1 on error
*/
int cros_ec_flash_write(struct udevice *dev, const uint8_t *data,
uint32_t offset, uint32_t size);
* @param region Flash region to query
* @param offset Returns offset of flash region in EC flash
* @param size Returns size of flash region
- * @return 0 if ok, -1 on error
+ * Return: 0 if ok, -1 on error
*/
int cros_ec_flash_offset(struct udevice *dev, enum ec_flash_region region,
uint32_t *offset, uint32_t *size);
*
* @param dev CROS-EC device
* @param block Buffer of VbNvContext to be read/write
- * @return 0 if ok, -1 on error
+ * Return: 0 if ok, -1 on error
*/
int cros_ec_read_nvdata(struct udevice *dev, uint8_t *block, int size);
int cros_ec_write_nvdata(struct udevice *dev, const uint8_t *block, int size);
*
* @param dev CROS-EC device
* @param versionp This is set to point to the version information
- * @return 0 if ok, -1 on error
+ * Return: 0 if ok, -1 on error
*/
int cros_ec_read_version(struct udevice *dev,
struct ec_response_get_version **versionp);
*
* @param dev CROS-EC device
* @param versionp This is set to point to the build string
- * @return 0 if ok, -1 on error
+ * Return: 0 if ok, -1 on error
*/
int cros_ec_read_build_info(struct udevice *dev, char **strp);
* @param dev CROS-EC device
* @param index index of the LDO/FET to switch
* @param state new state of the LDO/FET : EC_LDO_STATE_ON|OFF
- * @return 0 if ok, -1 on error
+ * Return: 0 if ok, -1 on error
*/
int cros_ec_set_ldo(struct udevice *dev, uint8_t index, uint8_t state);
* @param dev CROS-EC device
* @param index index of the LDO/FET to switch
* @param state current state of the LDO/FET : EC_LDO_STATE_ON|OFF
- * @return 0 if ok, -1 on error
+ * Return: 0 if ok, -1 on error
*/
int cros_ec_get_ldo(struct udevice *dev, uint8_t index, uint8_t *state);
* This permits delayed reporting of the EC error if it failed during
* early init.
*
- * @return error (0 if there was no error, -ve if there was an error)
+ * Return: error (0 if there was no error, -ve if there was an error)
*/
int cros_ec_get_error(void);
/**
* cros_ec_get_events_b() - Get event mask B
*
- * @return value of event mask, default value of 0 if it could not be read
+ * Return: value of event mask, default value of 0 if it could not be read
*/
uint64_t cros_ec_get_events_b(struct udevice *dev);
*
* Any pending events in the B range are cleared
*
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
*/
int cros_ec_clear_events_b(struct udevice *dev, uint64_t mask);
*
* @param dev CROS-EC device
* @param region Flash region to query
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
*/
int cros_ec_efs_verify(struct udevice *dev, enum ec_flash_region region);
*
* @param dev CROS-EC device
* @param flags Flags to use (EC_BATTERY_CUTOFF_FLAG_...)
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
*/
int cros_ec_battery_cutoff(struct udevice *dev, uint8_t flags);
/**
+ * cros_ec_set_pwm_duty() - Set duty cycle of a generic pwm
+ *
+ * Note that duty value needs to be passed to the EC as a 16 bit number
+ * for increased precision.
+ *
+ * @param dev CROS-EC device
+ * @param index Index of the pwm
+ * @param duty Desired duty cycle, in 0..EC_PWM_MAX_DUTY range.
+ * Return: 0 if OK, -ve on error
+ */
+int cros_ec_set_pwm_duty(struct udevice *dev, uint8_t index, uint16_t duty);
+
+/**
* cros_ec_read_limit_power() - Check if power is limited by batter/charger
*
* Sometimes the battery is low and / or the device is connected to a charger
*
* @param dev CROS-EC device
* @param limit_powerp Returns whether power is limited (0 or 1)
- * @return 0 if OK, -ENOSYS if the EC does not support this comment, -EINVAL
+ * Return: 0 if OK, -ENOSYS if the EC does not support this comment, -EINVAL
* if the EC returned an invalid response
*/
int cros_ec_read_limit_power(struct udevice *dev, int *limit_powerp);
*
* @param dev CROS-EC device
* @param flags Flags to use (EC_POWER_BUTTON_...)
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
*/
int cros_ec_config_powerbtn(struct udevice *dev, uint32_t flags);
* Determines whether a lid close event is reported
*
* @param dev CROS-EC device
- * @return shufdown mas if OK, -ve on error
+ * Return: shufdown mas if OK, -ve on error
*/
int cros_ec_get_lid_shutdown_mask(struct udevice *dev);
*
* @param dev CROS-EC device
* @param enable true to enable reporting, false to disable
- * @return shufdown mas if OK, -ve on error
+ * Return: shufdown mas if OK, -ve on error
*/
int cros_ec_set_lid_shutdown_mask(struct udevice *dev, int enable);
*
* @dev: CROS-EC device
* @handshakep: If non-NULL, returns received handshake value on error
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
*/
int cros_ec_hello(struct udevice *dev, uint *handshakep);
*
* @dev: CROS-EC device
* @featuresp: Returns a bitmask of supported features
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
*/
int cros_ec_get_features(struct udevice *dev, u64 *featuresp);
*
* @dev: CROS-EC device
* @feature: Feature number to check (enum ec_feature_code)
- * @return true if supported, false if not, -ve on error
+ * Return: true if supported, false if not, -ve on error
*/
int cros_ec_check_feature(struct udevice *dev, uint feature);
+/**
+ * cros_ec_get_switches() - Get switches value
+ *
+ * @dev: CROS-EC device
+ * Return: switches value, or -ENOSYS if not supported, or other -ve value on
+ * other error
+ */
+int cros_ec_get_switches(struct udevice *dev);
+
+/**
+ * cros_ec_vstore_supported() - Check if vstore is supported
+ *
+ * @dev: CROS-EC device
+ * Return: false if not supported, true if supported, -ve on error
+ */
+int cros_ec_vstore_supported(struct udevice *dev);
+
+/**
+ * cros_ec_vstore_info() - Get vstore information
+ *
+ * @dev: CROS-EC device
+ * @lockedp: mask of locked slots
+ * Return: number of vstore slots supported by the EC,, -ve on error
+ */
+int cros_ec_vstore_info(struct udevice *dev, u32 *lockedp);
+
+/**
+ * cros_ec_vstore_read() - Read data from EC vstore slot
+ *
+ * @dev: CROS-EC device
+ * @slot: vstore slot to read from
+ * @data: buffer to store read data, must be EC_VSTORE_SLOT_SIZE bytes
+ * Return: 0 if OK, -ve on error
+ */
+int cros_ec_vstore_read(struct udevice *dev, int slot, uint8_t *data);
+
+/**
+ * cros_ec_vstore_write() - Save data into EC vstore slot
+ *
+ * The maximum size of data is EC_VSTORE_SLOT_SIZE. It is the caller's
+ * responsibility to check the number of implemented slots by querying the
+ * vstore info.
+ *
+ * @dev: CROS-EC device
+ * @slot: vstore slot to write into
+ * @data: data to write
+ * @size: size of data in bytes
+ * Return: 0 if OK, -ve on error
+ */
+int cros_ec_vstore_write(struct udevice *dev, int slot, const uint8_t *data,
+ size_t size);
+
+/**
+ * cros_ec_read_batt_charge() - Read the battery-charge state
+ *
+ * @dev: CROS-EC device
+ * @chargep: Return battery-charge state as a percentage
+ */
+int cros_ec_read_batt_charge(struct udevice *dev, uint *chargep);
+
#endif