linux-kernel - [PATCH 1/2] platform/chrome: cros_ec: Import Type C control command

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Message-Id: <20210203014939.741065-1-pmalani@chromium.org>
Date:   Tue,  2 Feb 2021 17:49:36 -0800
From:   Prashant Malani <pmalani@...omium.org>
To:     linux-kernel@...r.kernel.org
Cc:     bleung@...omium.org, Prashant Malani <pmalani@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Pi-Hsun Shih <pihsun@...omium.org>,
        Utkarsh Patel <utkarsh.h.patel@...el.com>
Subject: [PATCH 1/2] platform/chrome: cros_ec: Import Type C control command

This command is used to communicate with the Chrome Embedded Controller
(EC) regarding USB Type C events and state.

These header updates are included in the latest Chrome OS EC headers [1]

[1]
https://chromium.googlesource.com/chromiumos/platform/ec/+/refs/heads/main/include/ec_commands.h

Signed-off-by: Prashant Malani <pmalani@...omium.org>
---
 .../linux/platform_data/cros_ec_commands.h    | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
index d3c40220b281..a95dc22a5463 100644
--- a/include/linux/platform_data/cros_ec_commands.h
+++ b/include/linux/platform_data/cros_ec_commands.h
@@ -5578,6 +5578,32 @@ struct ec_response_typec_discovery {
 	struct svid_mode_info svids[0];
 } __ec_align1;
 
+
+/* USB Type-C commands for AP-controlled device policy. */
+#define EC_CMD_TYPEC_CONTROL 0x0132
+
+enum typec_control_command {
+	TYPEC_CONTROL_COMMAND_EXIT_MODES,
+	TYPEC_CONTROL_COMMAND_CLEAR_EVENTS,
+	TYPEC_CONTROL_COMMAND_ENTER_MODE,
+};
+
+struct ec_params_typec_control {
+	uint8_t port;
+	uint8_t command;	/* enum typec_control_command */
+	uint16_t reserved;
+
+	/*
+	 * This section will be interpreted based on |command|. Define a
+	 * placeholder structure to avoid having to increase the size and bump
+	 * the command version when adding new sub-commands.
+	 */
+	union {
+		uint32_t clear_events_mask;
+		uint8_t mode_to_enter;      /* enum typec_mode */
+		uint8_t placeholder[128];
+	};
+} __ec_align1;
 /*
  * Gather all status information for a port.
  *
-- 
2.30.0.365.g02bc693789-goog