This change is for the PHC devices that can measure the phase offset between PHC signal and the external signal, such as the 1PPS signal of GNSS. Reporting PTP_CLOCK_EXTOFF to user space will be piggy-backed to the existing ptp_extts_event so that application such as ts2phc can poll the external offset the same way as extts. Hence, ts2phc can use the offset to achieve the alignment between PHC and the external signal by the help of either SW or HW filters.
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| @@ -32,6 +32,7 @@ · 31 unmodified lines | ||
| 32 | 32 | #define PTP_RISING_EDGE (1<<1) |
| 33 | 33 | #define PTP_FALLING_EDGE (1<<2) |
| 34 | 34 | #define PTP_STRICT_FLAGS (1<<3) |
| 35 | +#define PTP_EXT_OFFSET (1<<4) | |
| 35 | 36 | #define PTP_EXTTS_EDGES (PTP_RISING_EDGE | PTP_FALLING_EDGE) |
| 36 | 37 | |
| 37 | 38 | /* |
| @@ -40,7 +41,8 @@ · 2 unmodified lines | ||
| 40 | 41 | #define PTP_EXTTS_VALID_FLAGS (PTP_ENABLE_FEATURE | \ |
| 41 | 42 | PTP_RISING_EDGE | \ |
| 42 | 43 | PTP_FALLING_EDGE | \ |
| 43 | − PTP_STRICT_FLAGS) | |
| 44 | + PTP_STRICT_FLAGS | \ | |
| 45 | + PTP_EXT_OFFSET) | |
| 44 | 46 | |
| 45 | 47 | /* |
| 46 | 48 | * flag fields valid for the original PTP_EXTTS_REQUEST ioctl. |
| @@ -50,6 +52,11 @@ · 3 unmodified lines | ||
| 50 | 52 | PTP_RISING_EDGE | \ |
| 51 | 53 | PTP_FALLING_EDGE) |
| 52 | 54 | |
| 55 | +/* | |
| 56 | + * flag fields valid for the ptp_extts_event report. | |
| 57 | + */ | |
| 58 | +#define PTP_EXTTS_EVENT_VALID (PTP_ENABLE_FEATURE) | |
| 59 | + | |
| 53 | 60 | /* |
| 54 | 61 | * Bits of the ptp_perout_request.flags field: |
| 55 | 62 | */ |
| @@ -228,9 +235,9 @@ struct ptp_pin_desc { · 172 unmodified lines | ||
| 228 | 235 | #define PTP_MASK_EN_SINGLE _IOW(PTP_CLK_MAGIC, 20, unsigned int) |
| 229 | 236 | |
| 230 | 237 | struct ptp_extts_event { |
| 231 | − struct ptp_clock_time t; /* Time event occured. */ | |
| 238 | + struct ptp_clock_time t; /* Time event occurred. */ | |
| 232 | 239 | unsigned int index; /* Which channel produced the event. */ |
| 233 | − unsigned int flags; /* Reserved for future use. */ | |
| 240 | + unsigned int flags; /* Event type. */ | |
| 234 | 241 | unsigned int rsv[2]; /* Reserved for future use. */ |
| 235 | 242 | }; |
| 236 | 243 | |