Commit 0e0dba88 authored by Prashant Malani's avatar Prashant Malani
Browse files

platform_chrome: cros_ec: Add Type-C VDM defines 

Add the EC header changes need to support USB Type-C VDM (Vendor Defined
Messages) communication between the system and USB PD-enabled
peripherals.

The headers are already present in the EC code base, from which they've
been ported [1].

[1] https://source.chromium.org/chromium/chromiumos/platform/ec/+/main:include/ec_commands.h



Signed-off-by: default avatarPrashant Malani <pmalani@chromium.org>
Reviewed-by: default avatarBenson Leung <bleung@chromium.org>
Acked-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20221228004648.793339-3-pmalani@chromium.org
parent 0ac7200e

include/linux/platform_data/cros_ec_commands.h

+51 −0
Original line number Diff line number Diff line
@@ -1300,6 +1300,18 @@ enum ec_feature_code { 
	 * mux.

	 */

	EC_FEATURE_TYPEC_MUX_REQUIRE_AP_ACK = 43,

	/*

	 * The EC supports entering and residing in S4.

	 */

	EC_FEATURE_S4_RESIDENCY = 44,

	/*

	 * The EC supports the AP directing mux sets for the board.

	 */

	EC_FEATURE_TYPEC_AP_MUX_SET = 45,

	/*

	 * The EC supports the AP composing VDMs for us to send.

	 */

	EC_FEATURE_TYPEC_AP_VDM_SEND = 46,

};



#define EC_FEATURE_MASK_0(event_code) BIT(event_code % 32)
@@ -5724,6 +5736,8 @@ enum typec_control_command { 
	TYPEC_CONTROL_COMMAND_ENTER_MODE,

	TYPEC_CONTROL_COMMAND_TBT_UFP_REPLY,

	TYPEC_CONTROL_COMMAND_USB_MUX_SET,

	TYPEC_CONTROL_COMMAND_BIST_SHARE_MODE,

	TYPEC_CONTROL_COMMAND_SEND_VDM_REQ,

};



/* Replies the AP may specify to the TBT EnterMode command as a UFP */
@@ -5737,6 +5751,17 @@ struct typec_usb_mux_set { 
	uint8_t mux_flags;	/* USB_PD_MUX_*-encoded USB mux state to set */

} __ec_align1;



#define VDO_MAX_SIZE 7



struct typec_vdm_req {

	/* VDM data, including VDM header */

	uint32_t vdm_data[VDO_MAX_SIZE];

	/* Number of 32-bit fields filled in */

	uint8_t vdm_data_objects;

	/* Partner to address - see enum typec_partner_type */

	uint8_t partner_type;

} __ec_align1;



struct ec_params_typec_control {

	uint8_t port;

	uint8_t command;	/* enum typec_control_command */
@@ -5752,6 +5777,8 @@ struct ec_params_typec_control { 
		uint8_t mode_to_enter;      /* enum typec_mode */

		uint8_t tbt_ufp_reply;      /* enum typec_tbt_ufp_reply */

		struct typec_usb_mux_set mux_params;

		/* Used for VMD_REQ */

		struct typec_vdm_req vdm_req_params;

		uint8_t placeholder[128];

	};

} __ec_align1;
@@ -5833,6 +5860,8 @@ enum tcpc_cc_polarity { 
#define PD_STATUS_EVENT_DISCONNECTED		BIT(3)

#define PD_STATUS_EVENT_MUX_0_SET_DONE		BIT(4)

#define PD_STATUS_EVENT_MUX_1_SET_DONE		BIT(5)

#define PD_STATUS_EVENT_VDM_REQ_REPLY		BIT(6)

#define PD_STATUS_EVENT_VDM_REQ_FAILED		BIT(7)



struct ec_params_typec_status {

	uint8_t port;
@@ -5876,6 +5905,28 @@ struct ec_response_typec_status { 
	uint32_t sink_cap_pdos[7];	/* Max 7 PDOs can be present */

} __ec_align1;



/*

 * Gather the response to the most recent VDM REQ from the AP

 */

#define EC_CMD_TYPEC_VDM_RESPONSE 0x013C



struct ec_params_typec_vdm_response {

	uint8_t port;

} __ec_align1;



struct ec_response_typec_vdm_response {

	/* Number of 32-bit fields filled in */

	uint8_t vdm_data_objects;

	/* Partner to address - see enum typec_partner_type */

	uint8_t partner_type;

	/* Reserved */

	uint16_t reserved;

	/* VDM data, including VDM header */

	uint32_t vdm_response[VDO_MAX_SIZE];

} __ec_align1;



#undef VDO_MAX_SIZE



/*****************************************************************************/

/* The command range 0x200-0x2FF is reserved for Rotor. */