cros_ec: Add error logging on a few commands

Add some more logging to provide more information on failures.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/misc/cros_ec.c b/drivers/misc/cros_ec.c
index 4013f50..e0f3dfc 100644 (file)
--- a/drivers/misc/cros_ec.c
+++ b/drivers/misc/cros_ec.c
@@ -13,6 +13,8 @@
  * is not reset.
  */
 
+#define LOG_CATEGORY UCLASS_CROS_EC
+
 #include <common.h>
 #include <command.h>
 #include <dm.h>
@@ -365,10 +367,14 @@ int cros_ec_scan_keyboard(struct udevice *dev, struct mbkp_keyscan *scan)
 int cros_ec_read_id(struct udevice *dev, char *id, int maxlen)
 {
        struct ec_response_get_version *r;
+       int ret;
 
-       if (ec_command_inptr(dev, EC_CMD_GET_VERSION, 0, NULL, 0,
-                       (uint8_t **)&r, sizeof(*r)) != sizeof(*r))
+       ret = ec_command_inptr(dev, EC_CMD_GET_VERSION, 0, NULL, 0,
+                              (uint8_t **)&r, sizeof(*r));
+       if (ret != sizeof(*r)) {
+               log_err("Got rc %d, expected %d\n", ret, sizeof(*r));
                return -1;
+       }
 
        if (maxlen > (int)sizeof(r->version_string_ro))
                maxlen = sizeof(r->version_string_ro);
@@ -381,6 +387,7 @@ int cros_ec_read_id(struct udevice *dev, char *id, int maxlen)
                memcpy(id, r->version_string_rw, maxlen);
                break;
        default:
+               log_err("Invalid EC image %d\n", r->current_image);
                return -1;
        }