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2 * Copyright 2015-2017 Google, Inc
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #ifndef __LINUX_USB_PD_H
16 #define __LINUX_USB_PD_H
18 #include <linux/types.h>
19 #include <linux/usb/typec.h>
22 enum pd_ctrl_msg_type
{
30 PD_CTRL_GET_SOURCE_CAP
= 7,
31 PD_CTRL_GET_SINK_CAP
= 8,
34 PD_CTRL_VCONN_SWAP
= 11,
36 PD_CTRL_SOFT_RESET
= 13,
40 enum pd_data_msg_type
{
42 PD_DATA_SOURCE_CAP
= 1,
47 PD_DATA_VENDOR_DEF
= 15,
53 #define PD_HEADER_CNT_SHIFT 12
54 #define PD_HEADER_CNT_MASK 0x7
55 #define PD_HEADER_ID_SHIFT 9
56 #define PD_HEADER_ID_MASK 0x7
57 #define PD_HEADER_PWR_ROLE BIT(8)
58 #define PD_HEADER_REV_SHIFT 6
59 #define PD_HEADER_REV_MASK 0x3
60 #define PD_HEADER_DATA_ROLE BIT(5)
61 #define PD_HEADER_TYPE_SHIFT 0
62 #define PD_HEADER_TYPE_MASK 0xf
64 #define PD_HEADER(type, pwr, data, id, cnt) \
65 ((((type) & PD_HEADER_TYPE_MASK) << PD_HEADER_TYPE_SHIFT) | \
66 ((pwr) == TYPEC_SOURCE ? PD_HEADER_PWR_ROLE : 0) | \
67 ((data) == TYPEC_HOST ? PD_HEADER_DATA_ROLE : 0) | \
68 (PD_REV20 << PD_HEADER_REV_SHIFT) | \
69 (((id) & PD_HEADER_ID_MASK) << PD_HEADER_ID_SHIFT) | \
70 (((cnt) & PD_HEADER_CNT_MASK) << PD_HEADER_CNT_SHIFT))
72 #define PD_HEADER_LE(type, pwr, data, id, cnt) \
73 cpu_to_le16(PD_HEADER((type), (pwr), (data), (id), (cnt)))
75 static inline unsigned int pd_header_cnt(u16 header
)
77 return (header
>> PD_HEADER_CNT_SHIFT
) & PD_HEADER_CNT_MASK
;
80 static inline unsigned int pd_header_cnt_le(__le16 header
)
82 return pd_header_cnt(le16_to_cpu(header
));
85 static inline unsigned int pd_header_type(u16 header
)
87 return (header
>> PD_HEADER_TYPE_SHIFT
) & PD_HEADER_TYPE_MASK
;
90 static inline unsigned int pd_header_type_le(__le16 header
)
92 return pd_header_type(le16_to_cpu(header
));
95 static inline unsigned int pd_header_msgid(u16 header
)
97 return (header
>> PD_HEADER_ID_SHIFT
) & PD_HEADER_ID_MASK
;
100 static inline unsigned int pd_header_msgid_le(__le16 header
)
102 return pd_header_msgid(le16_to_cpu(header
));
105 #define PD_MAX_PAYLOAD 7
108 * struct pd_message - PD message as seen on wire
109 * @header: PD message header
110 * @payload: PD message payload
114 __le32 payload
[PD_MAX_PAYLOAD
];
117 /* PDO: Power Data Object */
118 #define PDO_MAX_OBJECTS 7
126 #define PDO_TYPE_SHIFT 30
127 #define PDO_TYPE_MASK 0x3
129 #define PDO_TYPE(t) ((t) << PDO_TYPE_SHIFT)
131 #define PDO_VOLT_MASK 0x3ff
132 #define PDO_CURR_MASK 0x3ff
133 #define PDO_PWR_MASK 0x3ff
135 #define PDO_FIXED_DUAL_ROLE BIT(29) /* Power role swap supported */
136 #define PDO_FIXED_SUSPEND BIT(28) /* USB Suspend supported (Source) */
137 #define PDO_FIXED_HIGHER_CAP BIT(28) /* Requires more than vSafe5V (Sink) */
138 #define PDO_FIXED_EXTPOWER BIT(27) /* Externally powered */
139 #define PDO_FIXED_USB_COMM BIT(26) /* USB communications capable */
140 #define PDO_FIXED_DATA_SWAP BIT(25) /* Data role swap supported */
141 #define PDO_FIXED_VOLT_SHIFT 10 /* 50mV units */
142 #define PDO_FIXED_CURR_SHIFT 0 /* 10mA units */
144 #define PDO_FIXED_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_FIXED_VOLT_SHIFT)
145 #define PDO_FIXED_CURR(ma) ((((ma) / 10) & PDO_CURR_MASK) << PDO_FIXED_CURR_SHIFT)
147 #define PDO_FIXED(mv, ma, flags) \
148 (PDO_TYPE(PDO_TYPE_FIXED) | (flags) | \
149 PDO_FIXED_VOLT(mv) | PDO_FIXED_CURR(ma))
151 #define PDO_BATT_MAX_VOLT_SHIFT 20 /* 50mV units */
152 #define PDO_BATT_MIN_VOLT_SHIFT 10 /* 50mV units */
153 #define PDO_BATT_MAX_PWR_SHIFT 0 /* 250mW units */
155 #define PDO_BATT_MIN_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_BATT_MIN_VOLT_SHIFT)
156 #define PDO_BATT_MAX_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_BATT_MAX_VOLT_SHIFT)
157 #define PDO_BATT_MAX_POWER(mw) ((((mw) / 250) & PDO_PWR_MASK) << PDO_BATT_MAX_PWR_SHIFT)
159 #define PDO_BATT(min_mv, max_mv, max_mw) \
160 (PDO_TYPE(PDO_TYPE_BATT) | PDO_BATT_MIN_VOLT(min_mv) | \
161 PDO_BATT_MAX_VOLT(max_mv) | PDO_BATT_MAX_POWER(max_mw))
163 #define PDO_VAR_MAX_VOLT_SHIFT 20 /* 50mV units */
164 #define PDO_VAR_MIN_VOLT_SHIFT 10 /* 50mV units */
165 #define PDO_VAR_MAX_CURR_SHIFT 0 /* 10mA units */
167 #define PDO_VAR_MIN_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_VAR_MIN_VOLT_SHIFT)
168 #define PDO_VAR_MAX_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_VAR_MAX_VOLT_SHIFT)
169 #define PDO_VAR_MAX_CURR(ma) ((((ma) / 10) & PDO_CURR_MASK) << PDO_VAR_MAX_CURR_SHIFT)
171 #define PDO_VAR(min_mv, max_mv, max_ma) \
172 (PDO_TYPE(PDO_TYPE_VAR) | PDO_VAR_MIN_VOLT(min_mv) | \
173 PDO_VAR_MAX_VOLT(max_mv) | PDO_VAR_MAX_CURR(max_ma))
175 static inline enum pd_pdo_type
pdo_type(u32 pdo
)
177 return (pdo
>> PDO_TYPE_SHIFT
) & PDO_TYPE_MASK
;
180 static inline unsigned int pdo_fixed_voltage(u32 pdo
)
182 return ((pdo
>> PDO_FIXED_VOLT_SHIFT
) & PDO_VOLT_MASK
) * 50;
185 static inline unsigned int pdo_min_voltage(u32 pdo
)
187 return ((pdo
>> PDO_VAR_MIN_VOLT_SHIFT
) & PDO_VOLT_MASK
) * 50;
190 static inline unsigned int pdo_max_voltage(u32 pdo
)
192 return ((pdo
>> PDO_VAR_MAX_VOLT_SHIFT
) & PDO_VOLT_MASK
) * 50;
195 static inline unsigned int pdo_max_current(u32 pdo
)
197 return ((pdo
>> PDO_VAR_MAX_CURR_SHIFT
) & PDO_CURR_MASK
) * 10;
200 static inline unsigned int pdo_max_power(u32 pdo
)
202 return ((pdo
>> PDO_BATT_MAX_PWR_SHIFT
) & PDO_PWR_MASK
) * 250;
205 /* RDO: Request Data Object */
206 #define RDO_OBJ_POS_SHIFT 28
207 #define RDO_OBJ_POS_MASK 0x7
208 #define RDO_GIVE_BACK BIT(27) /* Supports reduced operating current */
209 #define RDO_CAP_MISMATCH BIT(26) /* Not satisfied by source caps */
210 #define RDO_USB_COMM BIT(25) /* USB communications capable */
211 #define RDO_NO_SUSPEND BIT(24) /* USB Suspend not supported */
213 #define RDO_PWR_MASK 0x3ff
214 #define RDO_CURR_MASK 0x3ff
216 #define RDO_FIXED_OP_CURR_SHIFT 10
217 #define RDO_FIXED_MAX_CURR_SHIFT 0
219 #define RDO_OBJ(idx) (((idx) & RDO_OBJ_POS_MASK) << RDO_OBJ_POS_SHIFT)
221 #define PDO_FIXED_OP_CURR(ma) ((((ma) / 10) & RDO_CURR_MASK) << RDO_FIXED_OP_CURR_SHIFT)
222 #define PDO_FIXED_MAX_CURR(ma) ((((ma) / 10) & RDO_CURR_MASK) << RDO_FIXED_MAX_CURR_SHIFT)
224 #define RDO_FIXED(idx, op_ma, max_ma, flags) \
225 (RDO_OBJ(idx) | (flags) | \
226 PDO_FIXED_OP_CURR(op_ma) | PDO_FIXED_MAX_CURR(max_ma))
228 #define RDO_BATT_OP_PWR_SHIFT 10 /* 250mW units */
229 #define RDO_BATT_MAX_PWR_SHIFT 0 /* 250mW units */
231 #define RDO_BATT_OP_PWR(mw) ((((mw) / 250) & RDO_PWR_MASK) << RDO_BATT_OP_PWR_SHIFT)
232 #define RDO_BATT_MAX_PWR(mw) ((((mw) / 250) & RDO_PWR_MASK) << RDO_BATT_MAX_PWR_SHIFT)
234 #define RDO_BATT(idx, op_mw, max_mw, flags) \
235 (RDO_OBJ(idx) | (flags) | \
236 RDO_BATT_OP_PWR(op_mw) | RDO_BATT_MAX_PWR(max_mw))
238 static inline unsigned int rdo_index(u32 rdo
)
240 return (rdo
>> RDO_OBJ_POS_SHIFT
) & RDO_OBJ_POS_MASK
;
243 static inline unsigned int rdo_op_current(u32 rdo
)
245 return ((rdo
>> RDO_FIXED_OP_CURR_SHIFT
) & RDO_CURR_MASK
) * 10;
248 static inline unsigned int rdo_max_current(u32 rdo
)
250 return ((rdo
>> RDO_FIXED_MAX_CURR_SHIFT
) &
254 static inline unsigned int rdo_op_power(u32 rdo
)
256 return ((rdo
>> RDO_BATT_OP_PWR_SHIFT
) & RDO_PWR_MASK
) * 250;
259 static inline unsigned int rdo_max_power(u32 rdo
)
261 return ((rdo
>> RDO_BATT_MAX_PWR_SHIFT
) & RDO_PWR_MASK
) * 250;
264 /* USB PD timers and counters */
265 #define PD_T_NO_RESPONSE 5000 /* 4.5 - 5.5 seconds */
266 #define PD_T_DB_DETECT 10000 /* 10 - 15 seconds */
267 #define PD_T_SEND_SOURCE_CAP 150 /* 100 - 200 ms */
268 #define PD_T_SENDER_RESPONSE 60 /* 24 - 30 ms, relaxed */
269 #define PD_T_SOURCE_ACTIVITY 45
270 #define PD_T_SINK_ACTIVITY 135
271 #define PD_T_SINK_WAIT_CAP 240
272 #define PD_T_PS_TRANSITION 500
273 #define PD_T_SRC_TRANSITION 35
274 #define PD_T_DRP_SNK 40
275 #define PD_T_DRP_SRC 30
276 #define PD_T_PS_SOURCE_OFF 920
277 #define PD_T_PS_SOURCE_ON 480
278 #define PD_T_PS_HARD_RESET 30
279 #define PD_T_SRC_RECOVER 760
280 #define PD_T_SRC_RECOVER_MAX 1000
281 #define PD_T_SRC_TURN_ON 275
282 #define PD_T_SAFE_0V 650
283 #define PD_T_VCONN_SOURCE_ON 100
284 #define PD_T_SINK_REQUEST 100 /* 100 ms minimum */
285 #define PD_T_ERROR_RECOVERY 100 /* minimum 25 is insufficient */
286 #define PD_T_SRCSWAPSTDBY 625 /* Maximum of 650ms */
287 #define PD_T_NEWSRC 250 /* Maximum of 275ms */
289 #define PD_T_DRP_TRY 100 /* 75 - 150 ms */
290 #define PD_T_DRP_TRYWAIT 600 /* 400 - 800 ms */
292 #define PD_T_CC_DEBOUNCE 200 /* 100 - 200 ms */
293 #define PD_T_PD_DEBOUNCE 20 /* 10 - 20 ms */
295 #define PD_N_CAPS_COUNT (PD_T_NO_RESPONSE / PD_T_SEND_SOURCE_CAP)
296 #define PD_N_HARD_RESET_COUNT 2
298 #endif /* __LINUX_USB_PD_H */