diff options
Diffstat (limited to 'src/ec/google/chromeec/ec.c')
| -rw-r--r-- | src/ec/google/chromeec/ec.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c index 8fdfbfbb28..a32b2a54a4 100644 --- a/src/ec/google/chromeec/ec.c +++ b/src/ec/google/chromeec/ec.c @@ -723,6 +723,31 @@ int google_chromeec_cbi_get_ssfc(uint32_t *ssfc) return cbi_get_uint32(ssfc, CBI_TAG_SSFC); } +bool google_chromeec_get_ucsi_enabled(void) +{ + int rv; + union ec_common_control cc; + + rv = google_chromeec_check_feature(EC_FEATURE_UCSI_PPM); + if (rv < 0) { + printk(BIOS_INFO, "Cannot check if EC_FEATURE_UCSI_PPM is available: status = %d\n", rv); + return false; + } + + if (rv == 0) + return false; + + /* Check if PPM is enabled at runtime. */ + cc.ucsi_enabled = 0; + rv = cbi_get_uint32(&cc.raw_value, CBI_TAG_COMMON_CONTROL); + if (rv < 0) { + printk(BIOS_DEBUG, "Cannot get tag CBI_TAG_COMMON_CONTROL from CBI: status = %d\n", rv); + return false; + } + + return (cc.ucsi_enabled != 0); +} + static int cbi_get_string(char *buf, size_t bufsize, uint32_t tag) { struct ec_params_get_cbi params = { |