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Subject[RFC PATCH v2 1/7] typec: tcpm: Add PD Rev 3.0 definitions to PD header
This commit adds definitions for PD Rev 3.0 messages, including
APDO PPS and extended message support for TCPM.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
---
include/linux/usb/pd.h | 174 +++++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 162 insertions(+), 12 deletions(-)

diff --git a/include/linux/usb/pd.h b/include/linux/usb/pd.h
index e00051c..8c9ac80 100644
--- a/include/linux/usb/pd.h
+++ b/include/linux/usb/pd.h
@@ -35,6 +35,13 @@ enum pd_ctrl_msg_type {
PD_CTRL_WAIT = 12,
PD_CTRL_SOFT_RESET = 13,
/* 14-15 Reserved */
+ PD_CTRL_NOT_SUPP = 16,
+ PD_CTRL_GET_SOURCE_CAP_EXT = 17,
+ PD_CTRL_GET_STATUS = 18,
+ PD_CTRL_FR_SWAP = 19,
+ PD_CTRL_GET_PPS_STATUS = 20,
+ PD_CTRL_GET_COUNTRY_CODES = 21,
+ /* 22-31 Reserved */
};

enum pd_data_msg_type {
@@ -43,13 +50,39 @@ enum pd_data_msg_type {
PD_DATA_REQUEST = 2,
PD_DATA_BIST = 3,
PD_DATA_SINK_CAP = 4,
- /* 5-14 Reserved */
+ PD_DATA_BATT_STATUS = 5,
+ PD_DATA_ALERT = 6,
+ PD_DATA_GET_COUNTRY_INFO = 7,
+ /* 8-14 Reserved */
PD_DATA_VENDOR_DEF = 15,
+ /* 16-31 Reserved */
+};
+
+enum pd_ext_msg_type {
+ /* 0 Reserved */
+ PD_EXT_SOURCE_CAP_EXT = 1,
+ PD_EXT_STATUS = 2,
+ PD_EXT_GET_BATT_CAP = 3,
+ PD_EXT_GET_BATT_STATUS = 4,
+ PD_EXT_BATT_CAP = 5,
+ PD_EXT_GET_MANUFACTURER_INFO = 6,
+ PD_EXT_MANUFACTURER_INFO = 7,
+ PD_EXT_SECURITY_REQUEST = 8,
+ PD_EXT_SECURITY_RESPONSE = 9,
+ PD_EXT_FW_UPDATE_REQUEST = 10,
+ PD_EXT_FW_UPDATE_RESPONSE = 11,
+ PD_EXT_PPS_STATUS = 12,
+ PD_EXT_COUNTRY_INFO = 13,
+ PD_EXT_COUNTRY_CODES = 14,
+ /* 15-31 Reserved */
};

#define PD_REV10 0x0
#define PD_REV20 0x1
+#define PD_REV30 0x2
+#define PD_MAX_REV PD_REV30

+#define PD_HEADER_EXT_HDR BIT(15)
#define PD_HEADER_CNT_SHIFT 12
#define PD_HEADER_CNT_MASK 0x7
#define PD_HEADER_ID_SHIFT 9
@@ -59,18 +92,19 @@ enum pd_data_msg_type {
#define PD_HEADER_REV_MASK 0x3
#define PD_HEADER_DATA_ROLE BIT(5)
#define PD_HEADER_TYPE_SHIFT 0
-#define PD_HEADER_TYPE_MASK 0xf
+#define PD_HEADER_TYPE_MASK 0x1f

-#define PD_HEADER(type, pwr, data, id, cnt) \
+#define PD_HEADER(type, pwr, data, rev, id, cnt, ext_hdr) \
((((type) & PD_HEADER_TYPE_MASK) << PD_HEADER_TYPE_SHIFT) | \
((pwr) == TYPEC_SOURCE ? PD_HEADER_PWR_ROLE : 0) | \
((data) == TYPEC_HOST ? PD_HEADER_DATA_ROLE : 0) | \
- (PD_REV20 << PD_HEADER_REV_SHIFT) | \
+ (rev << PD_HEADER_REV_SHIFT) | \
(((id) & PD_HEADER_ID_MASK) << PD_HEADER_ID_SHIFT) | \
- (((cnt) & PD_HEADER_CNT_MASK) << PD_HEADER_CNT_SHIFT))
+ (((cnt) & PD_HEADER_CNT_MASK) << PD_HEADER_CNT_SHIFT) | \
+ ((ext_hdr) ? PD_HEADER_EXT_HDR : 0))

-#define PD_HEADER_LE(type, pwr, data, id, cnt) \
- cpu_to_le16(PD_HEADER((type), (pwr), (data), (id), (cnt)))
+#define PD_HEADER_LE(type, pwr, data, rev, id, cnt) \
+ cpu_to_le16(PD_HEADER((type), (pwr), (data), (rev), (id), (cnt), (0)))

static inline unsigned int pd_header_cnt(u16 header)
{
@@ -102,16 +136,75 @@ static inline unsigned int pd_header_msgid_le(__le16 header)
return pd_header_msgid(le16_to_cpu(header));
}

+static inline unsigned int pd_header_rev(u16 header)
+{
+ return (header >> PD_HEADER_REV_SHIFT) & PD_HEADER_REV_MASK;
+}
+
+static inline unsigned int pd_header_rev_le(__le16 header)
+{
+ return pd_header_rev(le16_to_cpu(header));
+}
+
+#define PD_EXT_HDR_CHUNKED BIT(15)
+#define PD_EXT_HDR_CHUNK_NUM_SHIFT 11
+#define PD_EXT_HDR_CHUNK_NUM_MASK 0xf
+#define PD_EXT_HDR_REQ_CHUNK BIT(10)
+#define PD_EXT_HDR_DATA_SIZE_SHIFT 0
+#define PD_EXT_HDR_DATA_SIZE_MASK 0x1ff
+
+#define PD_EXT_HDR(data_size, req_chunk, chunk_num, chunked) \
+ ((((data_size) & PD_EXT_HDR_DATA_SIZE_MASK) << PD_EXT_HDR_DATA_SIZE_SHIFT) | \
+ ((req_chunk) ? PD_EXT_HDR_REQ_CHUNK : 0) | \
+ (((chunk_num) & PD_EXT_HDR_CHUNK_NUM_MASK) << PD_EXT_HDR_CHUNK_NUM_SHIFT) | \
+ ((chunked) ? PD_EXT_HDR_CHUNKED : 0))
+
+#define PD_EXT_HDR_LE(data_size, req_chunk, chunk_num, chunked) \
+ cpu_to_le16(PD_EXT_HDR((data_size), (req_chunk), (chunk_num), (chunked)))
+
+static inline unsigned int pd_ext_header_chunk_num(u16 ext_header)
+{
+ return (ext_header >> PD_EXT_HDR_CHUNK_NUM_SHIFT) &
+ PD_EXT_HDR_CHUNK_NUM_MASK;
+}
+
+static inline unsigned int pd_ext_header_data_size(u16 ext_header)
+{
+ return (ext_header >> PD_EXT_HDR_DATA_SIZE_SHIFT) &
+ PD_EXT_HDR_DATA_SIZE_MASK;
+}
+
+static inline unsigned int pd_ext_header_data_size_le(__le16 ext_header)
+{
+ return pd_ext_header_data_size(le16_to_cpu(ext_header));
+}
+
#define PD_MAX_PAYLOAD 7
+#define PD_EXT_MAX_CHUNK_DATA 26

/**
- * struct pd_message - PD message as seen on wire
- * @header: PD message header
- * @payload: PD message payload
- */
+ * struct pd_chunked_ext_message_data - PD chunked extended message data as
+ * seen on wire
+ * @header: PD extended message header
+ * @data: PD extended message data
+ */
+struct pd_chunked_ext_message_data {
+ __le16 header;
+ u8 data[PD_EXT_MAX_CHUNK_DATA];
+} __packed;
+
+/**
+ * struct pd_message - PD message as seen on wire
+ * @header: PD message header
+ * @payload: PD message payload
+ * @ext_msg: PD message chunked extended message data
+ */
struct pd_message {
__le16 header;
- __le32 payload[PD_MAX_PAYLOAD];
+ union {
+ __le32 payload[PD_MAX_PAYLOAD];
+ struct pd_chunked_ext_message_data ext_msg;
+ };
} __packed;

/* PDO: Power Data Object */
@@ -121,6 +214,7 @@ enum pd_pdo_type {
PDO_TYPE_FIXED = 0,
PDO_TYPE_BATT = 1,
PDO_TYPE_VAR = 2,
+ PDO_TYPE_APDO = 3,
};

#define PDO_TYPE_SHIFT 30
@@ -172,6 +266,29 @@ enum pd_pdo_type {
(PDO_TYPE(PDO_TYPE_VAR) | PDO_VAR_MIN_VOLT(min_mv) | \
PDO_VAR_MAX_VOLT(max_mv) | PDO_VAR_MAX_CURR(max_ma))

+enum pd_apdo_type {
+ APDO_TYPE_PPS = 0,
+};
+
+#define PDO_APDO_TYPE_SHIFT 28 /* Only valid value currently is 0x0 - PPS */
+#define PDO_APDO_MAX_VOLT_SHIFT 17 /* 100mV units */
+#define PDO_APDO_MIN_VOLT_SHIFT 8 /* 100mV units */
+#define PDO_APDO_MAX_CURR_SHIFT 0 /* 50mA units */
+
+#define PDO_APDO_TYPE_MASK 0x3
+#define PDO_APDO_VOLT_MASK 0xff
+#define PDO_APDO_CURR_MASK 0x7f
+
+#define PDO_APDO_TYPE(t) ((t) << PDO_APDO_TYPE_SHIFT)
+#define PDO_APDO_MIN_VOLT(mv) ((((mv) / 100) & PDO_APDO_VOLT_MASK) << PDO_APDO_MIN_VOLT_SHIFT)
+#define PDO_APDO_MAX_VOLT(mv) ((((mv) / 100) & PDO_APDO_VOLT_MASK) << PDO_APDO_MAX_VOLT_SHIFT)
+#define PDO_APDO_MAX_CURR(ma) ((((ma) / 50) & PDO_APDO_CURR_MASK) << PDO_APDO_MAX_CURR_SHIFT)
+
+#define PDO_APDO(min_mv, max_mv, max_ma) \
+ (PDO_TYPE(PDO_TYPE_APDO) | PDO_APDO_TYPE(ADPO_TYPE_PPS) | \
+ PDO_APDO_MIN_VOLT(min_mv) | PDO_APDO_MAX_VOLT(max_mv) | \
+ PDO_APDO_MAX_CURR(max_ma))
+
static inline enum pd_pdo_type pdo_type(u32 pdo)
{
return (pdo >> PDO_TYPE_SHIFT) & PDO_TYPE_MASK;
@@ -202,6 +319,26 @@ static inline unsigned int pdo_max_power(u32 pdo)
return ((pdo >> PDO_BATT_MAX_PWR_SHIFT) & PDO_PWR_MASK) * 250;
}

+static inline enum pd_apdo_type pdo_apdo_type(u32 pdo)
+{
+ return (pdo >> PDO_APDO_TYPE_SHIFT) & PDO_APDO_TYPE_MASK;
+}
+
+static inline unsigned int pdo_apdo_min_voltage(u32 pdo)
+{
+ return ((pdo >> PDO_APDO_MIN_VOLT_SHIFT) & PDO_APDO_VOLT_MASK) * 100;
+}
+
+static inline unsigned int pdo_apdo_max_voltage(u32 pdo)
+{
+ return ((pdo >> PDO_APDO_MAX_VOLT_SHIFT) & PDO_APDO_VOLT_MASK) * 100;
+}
+
+static inline unsigned int pdo_apdo_max_current(u32 pdo)
+{
+ return ((pdo >> PDO_APDO_MAX_CURR_SHIFT) & PDO_APDO_CURR_MASK) * 50;
+}
+
/* RDO: Request Data Object */
#define RDO_OBJ_POS_SHIFT 28
#define RDO_OBJ_POS_MASK 0x7
@@ -235,6 +372,19 @@ static inline unsigned int pdo_max_power(u32 pdo)
(RDO_OBJ(idx) | (flags) | \
RDO_BATT_OP_PWR(op_mw) | RDO_BATT_MAX_PWR(max_mw))

+#define RDO_PROG_VOLT_MASK 0x7ff
+#define RDO_PROG_CURR_MASK 0x7f
+
+#define RDO_PROG_VOLT_SHIFT 9
+#define RDO_PROG_CURR_SHIFT 0
+
+#define PDO_PROG_OUT_VOLT(mv) ((((mv) / 20) & RDO_PROG_VOLT_MASK) << RDO_PROG_VOLT_SHIFT)
+#define PDO_PROG_OP_CURR(mv) ((((ma) / 50) & RDO_PROG_CURR_MASK) << RDO_PROG_CURR_SHIFT)
+
+#define RDO_PROG(idx, out_mv, op_ma, flags) \
+ (RDO_OBJ(idx) | (flags) | \
+ PDO_PROG_OUT_VOLT(out_mv) | PDO_PROG_OP_CURR(op_ma))
+
static inline unsigned int rdo_index(u32 rdo)
{
return (rdo >> RDO_OBJ_POS_SHIFT) & RDO_OBJ_POS_MASK;
--
1.9.1
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