1 /* SPDX-License-Identifier: GPL-2.0-only */
2 
3 #ifndef __CROS_EC_TYPEC__
4 #define __CROS_EC_TYPEC__
5 
6 #include <linux/list.h>
7 #include <linux/notifier.h>
8 #include <linux/platform_data/cros_ec_proto.h>
9 #include <linux/usb/pd.h>
10 #include <linux/usb/role.h>
11 #include <linux/usb/typec.h>
12 #include <linux/usb/typec_altmode.h>
13 #include <linux/usb/typec_mux.h>
14 #include <linux/usb/typec_retimer.h>
15 #include <linux/workqueue.h>
16 
17 /* Supported alt modes. */
18 enum {
19 	CROS_EC_ALTMODE_DP = 0,
20 	CROS_EC_ALTMODE_TBT,
21 	CROS_EC_ALTMODE_USB4,
22 	CROS_EC_ALTMODE_MAX,
23 };
24 
25 /* Container for altmode pointer nodes. */
26 struct cros_typec_altmode_node {
27 	struct typec_altmode *amode;
28 	struct list_head list;
29 };
30 
31 /* Platform-specific data for the Chrome OS EC Type C controller. */
32 struct cros_typec_data {
33 	struct device *dev;
34 	struct cros_ec_device *ec;
35 	int num_ports;
36 	unsigned int pd_ctrl_ver;
37 	/* Array of ports, indexed by port number. */
38 	struct cros_typec_port *ports[EC_USB_PD_MAX_PORTS];
39 	struct notifier_block nb;
40 	struct work_struct port_work;
41 	bool typec_cmd_supported;
42 	bool needs_mux_ack;
43 	bool ap_driven_altmode;
44 };
45 
46 /* Per port data. */
47 struct cros_typec_port {
48 	struct typec_port *port;
49 	int port_num;
50 	/* Initial capabilities for the port. */
51 	struct typec_capability caps;
52 	struct typec_partner *partner;
53 	struct typec_cable *cable;
54 	/* SOP' plug. */
55 	struct typec_plug *plug;
56 	/* Port partner PD identity info. */
57 	struct usb_pd_identity p_identity;
58 	/* Port cable PD identity info. */
59 	struct usb_pd_identity c_identity;
60 	struct typec_switch *ori_sw;
61 	struct typec_mux *mux;
62 	struct typec_retimer *retimer;
63 	struct usb_role_switch *role_sw;
64 
65 	/* Variables keeping track of switch state. */
66 	struct typec_mux_state state;
67 	uint8_t mux_flags;
68 	uint8_t role;
69 
70 	struct typec_altmode *port_altmode[CROS_EC_ALTMODE_MAX];
71 
72 	/* Flag indicating that PD partner discovery data parsing is completed. */
73 	bool sop_disc_done;
74 	bool sop_prime_disc_done;
75 	struct ec_response_typec_discovery *disc_data;
76 	struct list_head partner_mode_list;
77 	struct list_head plug_mode_list;
78 
79 	/* PDO-related structs */
80 	struct usb_power_delivery *partner_pd;
81 	struct usb_power_delivery_capabilities *partner_src_caps;
82 	struct usb_power_delivery_capabilities *partner_sink_caps;
83 
84 	struct cros_typec_data *typec_data;
85 };
86 
87 #endif /*  __CROS_EC_TYPEC__ */
88