eaw/u-boot
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

cros_ec: Support reading EC features

Browse Source 
The EC can support a variety of features and provides a way to find out
what is available. Add support for this.

Also update the feature list to the lastest available while we are here.
This is at:

   https://chromium.googlesource.com/chromiumos/platform/ec/+/refs/heads/master/include/ec_commands.h

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2021-01-16 14:52:26 -07:00
parent 7791df576c
commit 8aec32f6ab
6 changed files with 195 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
include/cros_ec.h
View File

@@ -516,4 +516,25 @@ int cros_ec_set_lid_shutdown_mask(struct udevice *dev, int enable);
* @return 0 if OK, -ve on error
*/
int cros_ec_hello(struct udevice *dev, uint *handshakep);
/**
* cros_ec_get_features() - Get the set of features provided by the EC
*
* See enum ec_feature_code for the list of available features
*
* @dev: CROS-EC device
* @featuresp: Returns a bitmask of supported features
* @return 0 if OK, -ve on error
*/
int cros_ec_get_features(struct udevice *dev, u64 *featuresp);
/**
* cros_ec_check_feature() - Check if a feature is supported
*
* @dev: CROS-EC device
* @feature: Feature number to check (enum ec_feature_code)
* @return true if supported, false if not, -ve on error
*/
int cros_ec_check_feature(struct udevice *dev, uint feature);
#endif

45
include/ec_commands.h
View File

@@ -1101,13 +1101,50 @@ enum ec_feature_code {
EC_FEATURE_DEVICE_EVENT = 31,
/* EC supports the unified wake masks for LPC/eSPI systems */
EC_FEATURE_UNIFIED_WAKE_MASKS = 32,
/* EC supports 64-bit host events */
EC_FEATURE_HOST_EVENT64 = 33,
/* EC runs code in RAM (not in place, a.k.a. XIP) */
EC_FEATURE_EXEC_IN_RAM = 34,
/* EC supports CEC commands */
EC_FEATURE_CEC = 35,
/* EC supports tight sensor timestamping. */
EC_FEATURE_MOTION_SENSE_TIGHT_TIMESTAMPS = 36,
/*
* EC supports tablet mode detection aligned to Chrome and allows
* setting of threshold by host command using
* MOTIONSENSE_CMD_TABLET_MODE_LID_ANGLE.
*/
EC_FEATURE_REFINED_TABLET_MODE_HYSTERESIS = 37,
/*
* Early Firmware Selection ver.2. Enabled by CONFIG_VBOOT_EFS2.
* Note this is a RO feature. So, a query (EC_CMD_GET_FEATURES) should
* be sent to RO to be precise.
*/
EC_FEATURE_EFS2 = 38,
/* The MCU is a System Companion Processor (SCP). */
EC_FEATURE_SCP = 39,
/* The MCU is an Integrated Sensor Hub */
EC_FEATURE_ISH = 40,
/* New TCPMv2 TYPEC_ prefaced commands supported */
EC_FEATURE_TYPEC_CMD = 41,
/*
* The EC will wait for direction from the AP to enter Type-C alternate
* modes or USB4.
*/
EC_FEATURE_TYPEC_REQUIRE_AP_MODE_ENTRY = 42,
/*
* The EC will wait for an acknowledge from the AP after setting the
* mux.
*/
EC_FEATURE_TYPEC_MUX_REQUIRE_AP_ACK = 43,
};
#define EC_FEATURE_MASK_0(event_code) (1UL << (event_code % 32))
#define EC_FEATURE_MASK_1(event_code) (1UL << (event_code - 32))
struct __ec_align4 ec_response_get_features {
#define EC_FEATURE_MASK_0(event_code) BIT(event_code % 32)
#define EC_FEATURE_MASK_1(event_code) BIT(event_code - 32)
struct ec_response_get_features {
uint32_t flags[2];
};
} __ec_align4;
/*****************************************************************************/
/* Get the board's SKU ID from EC */