linux-kernel - [PATCH 1/9] media: cros-ec-cec: Use cros_ec

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Message-ID: <20230814043140.1108917-2-rekanorman@chromium.org>
Date:   Mon, 14 Aug 2023 14:29:10 +1000
From:   Reka Norman <rekanorman@...omium.org>
To:     Hans Verkuil <hverkuil-cisco@...all.nl>
Cc:     Neil Armstrong <narmstrong@...libre.com>,
        Daisuke Nojiri <dnojiri@...omium.org>,
        Stefan Adolfsson <sadolfsson@...gle.com>,
        Reka Norman <rekanorman@...omium.org>,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org
Subject: [PATCH 1/9] media: cros-ec-cec: Use cros_ec_cmd to send host commands

Use the cros_ec_cmd helper function to reduce the amount of boilerplate
when sending host commands.

Signed-off-by: Reka Norman <rekanorman@...omium.org>
---

 .../media/cec/platform/cros-ec/cros-ec-cec.c  | 44 +++++++------------
 1 file changed, 16 insertions(+), 28 deletions(-)

diff --git a/drivers/media/cec/platform/cros-ec/cros-ec-cec.c b/drivers/media/cec/platform/cros-ec/cros-ec-cec.c
index c17faf002877..8dd95fb38546 100644
--- a/drivers/media/cec/platform/cros-ec/cros-ec-cec.c
+++ b/drivers/media/cec/platform/cros-ec/cros-ec-cec.c
@@ -95,18 +95,14 @@ static int cros_ec_cec_set_log_addr(struct cec_adapter *adap, u8 logical_addr)
 {
 	struct cros_ec_cec *cros_ec_cec = adap->priv;
 	struct cros_ec_device *cros_ec = cros_ec_cec->cros_ec;
-	struct {
-		struct cros_ec_command msg;
-		struct ec_params_cec_set data;
-	} __packed msg = {};
+	struct ec_params_cec_set params = {
+		.cmd = CEC_CMD_LOGICAL_ADDRESS,
+		.val = logical_addr,
+	};
 	int ret;
 
-	msg.msg.command = EC_CMD_CEC_SET;
-	msg.msg.outsize = sizeof(msg.data);
-	msg.data.cmd = CEC_CMD_LOGICAL_ADDRESS;
-	msg.data.val = logical_addr;
-
-	ret = cros_ec_cmd_xfer_status(cros_ec, &msg.msg);
+	ret = cros_ec_cmd(cros_ec, 0, EC_CMD_CEC_SET, &params, sizeof(params),
+			  NULL, 0);
 	if (ret < 0) {
 		dev_err(cros_ec->dev,
 			"error setting CEC logical address on EC: %d\n", ret);
@@ -121,17 +117,13 @@ static int cros_ec_cec_transmit(struct cec_adapter *adap, u8 attempts,
 {
 	struct cros_ec_cec *cros_ec_cec = adap->priv;
 	struct cros_ec_device *cros_ec = cros_ec_cec->cros_ec;
-	struct {
-		struct cros_ec_command msg;
-		struct ec_params_cec_write data;
-	} __packed msg = {};
+	struct ec_params_cec_write params;
 	int ret;
 
-	msg.msg.command = EC_CMD_CEC_WRITE_MSG;
-	msg.msg.outsize = cec_msg->len;
-	memcpy(msg.data.msg, cec_msg->msg, cec_msg->len);
+	memcpy(params.msg, cec_msg->msg, cec_msg->len);
 
-	ret = cros_ec_cmd_xfer_status(cros_ec, &msg.msg);
+	ret = cros_ec_cmd(cros_ec, 0, EC_CMD_CEC_WRITE_MSG, &params,
+			  cec_msg->len, NULL, 0);
 	if (ret < 0) {
 		dev_err(cros_ec->dev,
 			"error writing CEC msg on EC: %d\n", ret);
@@ -145,18 +137,14 @@ static int cros_ec_cec_adap_enable(struct cec_adapter *adap, bool enable)
 {
 	struct cros_ec_cec *cros_ec_cec = adap->priv;
 	struct cros_ec_device *cros_ec = cros_ec_cec->cros_ec;
-	struct {
-		struct cros_ec_command msg;
-		struct ec_params_cec_set data;
-	} __packed msg = {};
+	struct ec_params_cec_set params = {
+		.cmd = CEC_CMD_ENABLE,
+		.val = enable,
+	};
 	int ret;
 
-	msg.msg.command = EC_CMD_CEC_SET;
-	msg.msg.outsize = sizeof(msg.data);
-	msg.data.cmd = CEC_CMD_ENABLE;
-	msg.data.val = enable;
-
-	ret = cros_ec_cmd_xfer_status(cros_ec, &msg.msg);
+	ret = cros_ec_cmd(cros_ec, 0, EC_CMD_CEC_SET, &params, sizeof(params),
+			  NULL, 0);
 	if (ret < 0) {
 		dev_err(cros_ec->dev,
 			"error %sabling CEC on EC: %d\n",
-- 
2.41.0.640.ga95def55d0-goog