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| author | Randall Spangler <rspangler@chromium.org> | 2014-02-27 13:26:08 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2014-03-17 20:05:47 -0600 |
| commit | e8c12662364fbcf5ea917d341f707534c8574900 (patch) | |
| tree | 92b10bee92329f51223785449ba781c9cdbaee74 /drivers/misc/cros_ec.c | |
| parent | 836bb6e8277aaa8f0f86e39b0c38b207d32723d9 (diff) | |
| download | u-boot-e8c12662364fbcf5ea917d341f707534c8574900.tar.gz u-boot-e8c12662364fbcf5ea917d341f707534c8574900.tar.xz u-boot-e8c12662364fbcf5ea917d341f707534c8574900.zip | |
cros_ec: Clean up multiple EC protocol support
Version 1 protocols (without command version) were already no longer
supported in cros_ec.c. This removes some dead code from the
cros_ec_i2c driver.
Version 2 protcols (with command version) are now called
protocol_version=2, instead of cmd_version_is_supported=1.
A subsequent change will introduce protocol version 3 for SPI.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/misc/cros_ec.c')
| -rw-r--r-- | drivers/misc/cros_ec.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/misc/cros_ec.c b/drivers/misc/cros_ec.c index ff46762dde..33b9390d3e 100644 --- a/drivers/misc/cros_ec.c +++ b/drivers/misc/cros_ec.c @@ -501,18 +501,23 @@ static int cros_ec_check_version(struct cros_ec_dev *dev) * * So for now, just read all the data anyway. */ - dev->cmd_version_is_supported = 1; + + /* Try sending a version 2 packet */ + dev->protocol_version = 2; if (ec_command_inptr(dev, EC_CMD_HELLO, 0, &req, sizeof(req), (uint8_t **)&resp, sizeof(*resp)) > 0) { - /* It appears to understand new version commands */ - dev->cmd_version_is_supported = 1; - } else { - printf("%s: ERROR: old EC interface not supported\n", - __func__); - return -1; + return 0; } - return 0; + /* + * Fail if we're still here, since the EC doesn't understand any + * protcol version we speak. Version 1 interface without command + * version is no longer supported, and we don't know about any new + * protocol versions. + */ + dev->protocol_version = 0; + printf("%s: ERROR: old EC interface not supported\n", __func__); + return -1; } int cros_ec_test(struct cros_ec_dev *dev) |