linux-kernel - [PATCH 4/5] platform/chrome: cros_ec_proto: Add version for ec

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Date:   Wed, 29 Sep 2021 19:23:54 -0700
From:   Prashant Malani <pmalani@...omium.org>
To:     linux-kernel@...r.kernel.org
Cc:     Prashant Malani <pmalani@...omium.org>,
        Benson Leung <bleung@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>
Subject: [PATCH 4/5] platform/chrome: cros_ec_proto: Add version for ec_command

Add a version parameter to cros_ec_command() for callers that may want
to specify which version of the host command they would like to use.

Signed-off-by: Prashant Malani <pmalani@...omium.org>
---
 drivers/platform/chrome/cros_ec_proto.c     | 3 +++
 drivers/platform/chrome/cros_usbpd_notify.c | 2 +-
 include/linux/platform_data/cros_ec_proto.h | 4 ++--
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
index fd114b57bca2..a9f1867e5d8f 100644
--- a/drivers/platform/chrome/cros_ec_proto.c
+++ b/drivers/platform/chrome/cros_ec_proto.c
@@ -915,6 +915,7 @@ EXPORT_SYMBOL_GPL(cros_ec_get_sensor_count);
  * cros_ec_command - Send a command to the EC.
  *
  * @ec_dev: EC device
+ * @version: EC command version
  * @command: EC command
  * @outdata: EC command output data
  * @outsize: Size of outdata
@@ -924,6 +925,7 @@ EXPORT_SYMBOL_GPL(cros_ec_get_sensor_count);
  * Return: >= 0 on success, negative error number on failure.
  */
 int cros_ec_command(struct cros_ec_device *ec_dev,
+		    unsigned int version,
 		    int command,
 		    void *outdata,
 		    int outsize,
@@ -937,6 +939,7 @@ int cros_ec_command(struct cros_ec_device *ec_dev,
 	if (!msg)
 		return -ENOMEM;
 
+	msg->version = version;
 	msg->command = command;
 	msg->outsize = outsize;
 	msg->insize = insize;
diff --git a/drivers/platform/chrome/cros_usbpd_notify.c b/drivers/platform/chrome/cros_usbpd_notify.c
index 860509474f05..91ce6be91aac 100644
--- a/drivers/platform/chrome/cros_usbpd_notify.c
+++ b/drivers/platform/chrome/cros_usbpd_notify.c
@@ -71,7 +71,7 @@ static void cros_usbpd_get_event_and_notify(struct device  *dev,
 	}
 
 	/* Check for PD host events on EC. */
-	ret = cros_ec_command(ec_dev, EC_CMD_PD_HOST_EVENT_STATUS,
+	ret = cros_ec_command(ec_dev, 0, EC_CMD_PD_HOST_EVENT_STATUS,
 			      NULL, 0, &host_event_status, sizeof(host_event_status));
 	if (ret < 0) {
 		dev_warn(dev, "Can't get host event status (err: %d)\n", ret);
diff --git a/include/linux/platform_data/cros_ec_proto.h b/include/linux/platform_data/cros_ec_proto.h
index f833473c5f44..9d370816a419 100644
--- a/include/linux/platform_data/cros_ec_proto.h
+++ b/include/linux/platform_data/cros_ec_proto.h
@@ -231,8 +231,8 @@ bool cros_ec_check_features(struct cros_ec_dev *ec, int feature);
 
 int cros_ec_get_sensor_count(struct cros_ec_dev *ec);
 
-int cros_ec_command(struct cros_ec_device *ec_dev, int command, void *outdata, int outsize,
-		    void *indata, int insize);
+int cros_ec_command(struct cros_ec_device *ec_dev, unsigned int version, int command, void *outdata,
+		    int outsize, void *indata, int insize);
 
 /**
  * cros_ec_get_time_ns() - Return time in ns.
-- 
2.33.0.685.g46640cef36-goog