diff options
| author | Simon Glass <sjg@chromium.org> | 2021-01-16 14:52:26 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2021-01-30 14:25:41 -0700 |
| commit | 8aec32f6abd722b141d96bc095999efa76bd0327 (patch) | |
| tree | 127ce4a016602e527aded6c3ceb97c8121c34c78 /drivers/misc | |
| parent | 7791df576c4e0bcb0529850e14173d028ec37275 (diff) | |
| download | u-boot-8aec32f6abd722b141d96bc095999efa76bd0327.tar.gz | |
cros_ec: Support reading EC features
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>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/cros_ec.c | 26 | ||||
| -rw-r--r-- | drivers/misc/cros_ec_sandbox.c | 11 |
2 files changed, 31 insertions, 6 deletions
diff --git a/drivers/misc/cros_ec.c b/drivers/misc/cros_ec.c index 80709be2f1..fd2f2abd7e 100644 --- a/drivers/misc/cros_ec.c +++ b/drivers/misc/cros_ec.c @@ -1344,19 +1344,33 @@ int cros_ec_i2c_tunnel(struct udevice *dev, int port, struct i2c_msg *in, return 0; } -int cros_ec_check_feature(struct udevice *dev, int feature) +int cros_ec_get_features(struct udevice *dev, u64 *featuresp) { struct ec_response_get_features r; int rv; - rv = ec_command(dev, EC_CMD_GET_FEATURES, 0, &r, sizeof(r), NULL, 0); - if (rv) - return rv; + rv = ec_command(dev, EC_CMD_GET_FEATURES, 0, NULL, 0, &r, sizeof(r)); + if (rv != sizeof(r)) + return -EIO; + *featuresp = r.flags[0] | (u64)r.flags[1] << 32; + + return 0; +} + +int cros_ec_check_feature(struct udevice *dev, uint feature) +{ + struct ec_response_get_features r; + int rv; + + rv = ec_command(dev, EC_CMD_GET_FEATURES, 0, NULL, 0, &r, sizeof(r)); + if (rv != sizeof(r)) + return -EIO; if (feature >= 8 * sizeof(r.flags)) - return -1; + return -EINVAL; - return r.flags[feature / 32] & EC_FEATURE_MASK_0(feature); + return r.flags[feature / 32] & EC_FEATURE_MASK_0(feature) ? true : + false; } /* diff --git a/drivers/misc/cros_ec_sandbox.c b/drivers/misc/cros_ec_sandbox.c index 9324384704..7213313c1a 100644 --- a/drivers/misc/cros_ec_sandbox.c +++ b/drivers/misc/cros_ec_sandbox.c @@ -480,6 +480,17 @@ static int process_cmd(struct ec_state *ec, len = sizeof(*resp); break; } + case EC_CMD_GET_FEATURES: { + struct ec_response_get_features *resp = resp_data; + + resp->flags[0] = EC_FEATURE_MASK_0(EC_FEATURE_FLASH) | + EC_FEATURE_MASK_0(EC_FEATURE_I2C); + resp->flags[1] = + EC_FEATURE_MASK_1(EC_FEATURE_UNIFIED_WAKE_MASKS) | + EC_FEATURE_MASK_1(EC_FEATURE_ISH); + len = sizeof(*resp); + break; + } default: printf(" ** Unknown EC command %#02x\n", req_hdr->command); return -1; |