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chrome platform changes for v5.3

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* CrOS EC:
 
 - Add new CrOS ISHTP transport protocol
 - Add proper documentation for debugfs entries and expose resume and uptime files
 - Select LPC transport protocol variant at runtime.
 - Add lid angle sensor driver
 - Fix oops on suspend/resume for lightbar driver
 - Set CrOS SPI transport protol in realtime
 
 * Wilco EC:
 
 - Add telemetry char device interface
 - Add support for event handling
 - Add new sysfs attributes
 
 * Misc:
 - Contains ib-mfd-cros-v5.3 immutable branch from mfd, with cros_ec_commands.h
   header freshly synced with Chrome OS's EC project.
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Merge tag 'tag-chrome-platform-for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

Pull chrome platform updates from Benson Leung
 "CrOS EC:
   - Add new CrOS ISHTP transport protocol
   - Add proper documentation for debugfs entries and expose resume and
     uptime files
   - Select LPC transport protocol variant at runtime.
   - Add lid angle sensor driver
   - Fix oops on suspend/resume for lightbar driver
   - Set CrOS SPI transport protol in realtime

  Wilco EC:
   - Add telemetry char device interface
   - Add support for event handling
   - Add new sysfs attributes

  Misc:
   - Contains ib-mfd-cros-v5.3 immutable branch from mfd, with
     cros_ec_commands.h header freshly synced with Chrome OS's EC
     project"

* tag 'tag-chrome-platform-for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux: (54 commits)
  mfd / platform: cros_ec_debugfs: Expose resume result via debugfs
  platform/chrome: lightbar: Get drvdata from parent in suspend/resume
  iio: cros_ec: Add lid angle driver
  platform/chrome: wilco_ec: Add circular buffer as event queue
  platform/chrome: cros_ec_lpc_mec: Fix kernel-doc comment first line
  platform/chrome: cros_ec_lpc: Choose Microchip EC at runtime
  platform/chrome: cros_ec_lpc: Merge cros_ec_lpc and cros_ec_lpc_reg
  Input: cros_ec_keyb: mask out extra flags in event_type
  platform/chrome: wilco_ec: Fix unreleased lock in event_read()
  platform/chrome: cros_ec_debugfs: cros_ec_uptime_fops can be static
  platform/chrome: cros_ec_debugfs: Add debugfs ABI documentation
  platform/chrome: cros_ec_debugfs: Fix kernel-doc comment first line
  platform/chrome: cros_ec_debugfs: Add debugfs entry to retrieve EC uptime
  mfd: cros_ec: Update I2S API
  mfd: cros_ec: Add Management API entry points
  mfd: cros_ec: Add SKU ID and Secure storage API
  mfd: cros_ec: Add API for rwsig
  mfd: cros_ec: Add API for Fingerprint support
  mfd: cros_ec: Add API for Touchpad support
  mfd: cros_ec: Add API for EC-EC communication
  ...
This commit is contained in:
Linus Torvalds 2019-07-11 18:45:29 -07:00
commit d7d170a8e3
33 changed files with 5643 additions and 995 deletions
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94
include/linux/platform_data/wilco-ec.h
View file

@ -13,12 +13,9 @@
/* Message flags for using the mailbox() interface */
#define WILCO_EC_FLAG_NO_RESPONSE BIT(0) /* EC does not respond */
#define WILCO_EC_FLAG_EXTENDED_DATA BIT(1) /* EC returns 256 data bytes */
/* Normal commands have a maximum 32 bytes of data */
#define EC_MAILBOX_DATA_SIZE 32
/* Extended commands have 256 bytes of response data */
#define EC_MAILBOX_DATA_SIZE_EXTENDED 256
/**
* struct wilco_ec_device - Wilco Embedded Controller handle.
@ -32,6 +29,7 @@
* @data_size: Size of the data buffer used for EC communication.
* @debugfs_pdev: The child platform_device used by the debugfs sub-driver.
* @rtc_pdev: The child platform_device used by the RTC sub-driver.
* @telem_pdev: The child platform_device used by the telemetry sub-driver.
*/
struct wilco_ec_device {
struct device *dev;
@ -43,6 +41,7 @@ struct wilco_ec_device {
size_t data_size;
struct platform_device *debugfs_pdev;
struct platform_device *rtc_pdev;
struct platform_device *telem_pdev;
};
/**
@ -85,14 +84,12 @@ struct wilco_ec_response {
* enum wilco_ec_msg_type - Message type to select a set of command codes.
* @WILCO_EC_MSG_LEGACY: Legacy EC messages for standard EC behavior.
* @WILCO_EC_MSG_PROPERTY: Get/Set/Sync EC controlled NVRAM property.
* @WILCO_EC_MSG_TELEMETRY_SHORT: 32 bytes of telemetry data provided by the EC.
* @WILCO_EC_MSG_TELEMETRY_LONG: 256 bytes of telemetry data provided by the EC.
* @WILCO_EC_MSG_TELEMETRY: Request telemetry data from the EC.
*/
enum wilco_ec_msg_type {
WILCO_EC_MSG_LEGACY = 0x00f0,
WILCO_EC_MSG_PROPERTY = 0x00f2,
WILCO_EC_MSG_TELEMETRY_SHORT = 0x00f5,
WILCO_EC_MSG_TELEMETRY_LONG = 0x00f6,
WILCO_EC_MSG_TELEMETRY = 0x00f5,
};
/**
@ -123,4 +120,87 @@ struct wilco_ec_message {
*/
int wilco_ec_mailbox(struct wilco_ec_device *ec, struct wilco_ec_message *msg);
/*
* A Property is typically a data item that is stored to NVRAM
* by the EC. Each of these data items has an index associated
* with it, known as the Property ID (PID). Properties may have
* variable lengths, up to a max of WILCO_EC_PROPERTY_MAX_SIZE
* bytes. Properties can be simple integers, or they may be more
* complex binary data.
*/
#define WILCO_EC_PROPERTY_MAX_SIZE 4
/**
* struct ec_property_set_msg - Message to get or set a property.
* @property_id: Which property to get or set.
* @length: Number of bytes of |data| that are used.
* @data: Actual property data.
*/
struct wilco_ec_property_msg {
u32 property_id;
int length;
u8 data[WILCO_EC_PROPERTY_MAX_SIZE];
};
/**
* wilco_ec_get_property() - Retrieve a property from the EC.
* @ec: Embedded Controller device.
* @prop_msg: Message for request and response.
*
* The property_id field of |prop_msg| should be filled before calling this
* function. The result will be stored in the data and length fields.
*
* Return: 0 on success, negative error code on failure.
*/
int wilco_ec_get_property(struct wilco_ec_device *ec,
struct wilco_ec_property_msg *prop_msg);
/**
* wilco_ec_set_property() - Store a property on the EC.
* @ec: Embedded Controller device.
* @prop_msg: Message for request and response.
*
* The property_id, length, and data fields of |prop_msg| should be
* filled before calling this function.
*
* Return: 0 on success, negative error code on failure.
*/
int wilco_ec_set_property(struct wilco_ec_device *ec,
struct wilco_ec_property_msg *prop_msg);
/**
* wilco_ec_get_byte_property() - Retrieve a byte-size property from the EC.
* @ec: Embedded Controller device.
* @property_id: Which property to retrieve.
* @val: The result value, will be filled by this function.
*
* Return: 0 on success, negative error code on failure.
*/
int wilco_ec_get_byte_property(struct wilco_ec_device *ec, u32 property_id,
u8 *val);
/**
* wilco_ec_get_byte_property() - Store a byte-size property on the EC.
* @ec: Embedded Controller device.
* @property_id: Which property to store.
* @val: Value to store.
*
* Return: 0 on success, negative error code on failure.
*/
int wilco_ec_set_byte_property(struct wilco_ec_device *ec, u32 property_id,
u8 val);
/**
* wilco_ec_add_sysfs() - Create sysfs entries
* @ec: Wilco EC device
*
* wilco_ec_remove_sysfs() needs to be called afterwards
* to perform the necessary cleanup.
*
* Return: 0 on success or negative error code on failure.
*/
int wilco_ec_add_sysfs(struct wilco_ec_device *ec);
void wilco_ec_remove_sysfs(struct wilco_ec_device *ec);
#endif /* WILCO_EC_H */