diff options
| author | Amit Sunil Dhamne <amitsd@google.com> | 2024-12-10 19:07:09 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-24 08:56:04 +0100 |
| commit | 8cda395b79d90709fde3a9963c667d849cc5718f (patch) | |
| tree | aa924efa7afce0ef049b150df98999d8f55b7c62 /include/linux/usb/pd.h | |
| parent | 8ecf60c3b3d4599d2e643bc88c303376a404ad13 (diff) | |
usb: typec: tcpm: Add new AMS for Get_Revision response
This commit adds a new AMS for responding to a "Get_Revision" request.
Revision message consists of the following fields:
+----------------------------------------------------+
| Header | RMDO |
| No. of data objects = 1 | |
+----------------------------------------------------+
While RMDO consists of:
* B31..28 Revision Major
* B27..24 Revision Minor
* B23..20 Version Major
* B19..16 Version Minor
* B15..0 Reserved, shall be set to zero.
As per the PD spec ("8.3.3.16.2.1 PR_Give_Revision State"), a request is
only expected when an explicit contract is established and the port is
in ready state. This AMS is only supported for PD >= 3.0.
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://lore.kernel.org/r/20241210-get_rev_upstream-v2-3-d0094e52d48f@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb/pd.h')
| -rw-r--r-- | include/linux/usb/pd.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/include/linux/usb/pd.h b/include/linux/usb/pd.h index d50098fb16b5..3068c3084eb6 100644 --- a/include/linux/usb/pd.h +++ b/include/linux/usb/pd.h @@ -33,7 +33,9 @@ enum pd_ctrl_msg_type { PD_CTRL_FR_SWAP = 19, PD_CTRL_GET_PPS_STATUS = 20, PD_CTRL_GET_COUNTRY_CODES = 21, - /* 22-31 Reserved */ + /* 22-23 Reserved */ + PD_CTRL_GET_REVISION = 24, + /* 25-31 Reserved */ }; enum pd_data_msg_type { @@ -46,7 +48,9 @@ enum pd_data_msg_type { PD_DATA_ALERT = 6, PD_DATA_GET_COUNTRY_INFO = 7, PD_DATA_ENTER_USB = 8, - /* 9-14 Reserved */ + /* 9-11 Reserved */ + PD_DATA_REVISION = 12, + /* 13-14 Reserved */ PD_DATA_VENDOR_DEF = 15, /* 16-31 Reserved */ }; @@ -453,6 +457,20 @@ static inline unsigned int rdo_max_power(u32 rdo) #define EUDO_TBT_SUPPORT BIT(14) #define EUDO_HOST_PRESENT BIT(13) +/* + * Request Message Data Object (PD Revision 3.1+ only) + * -------- + * <31:28> :: Revision Major + * <27:24> :: Revision Minor + * <23:20> :: Version Major + * <19:16> :: Version Minor + * <15:0> :: Reserved, Shall be set to zero + */ + +#define RMDO(rev_maj, rev_min, ver_maj, ver_min) \ + (((rev_maj) & 0xf) << 28 | ((rev_min) & 0xf) << 24 | \ + ((ver_maj) & 0xf) << 20 | ((ver_min) & 0xf) << 16) + /* USB PD timers and counters */ #define PD_T_NO_RESPONSE 5000 /* 4.5 - 5.5 seconds */ #define PD_T_DB_DETECT 10000 /* 10 - 15 seconds */ |