idpf_ptp_read_src_clk_reg(9)

✨ idpf_ptp_read_src_clk_reg 💅

okay so bestie, this is a page straight out of the Kernel API Manual — it's idpf_ptp_read_src_clk_reg(9) and it's literally just here to read the main timer value for you. that's the whole vibe. 🕰️✨

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🌸 NAME 🌸

idpf_ptp_read_src_clk_reg — Read the main timer value

like, the main timer. the big one. the headliner. she's the source clock and she knows it 👑

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🎀 SYNOPSIS 🎀

int idpf_ptp_read_src_clk_reg (struct idpf_adapter *adapter , u64
*src_clk , struct ptp_system_timestamp *sts );

three args in, one int out. classic. no notes. 🫶

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🦋 ARGUMENTS 🦋

• adapter — the driver specific private structure. it's the little home base for everything this driver needs, and yes you have to hand it over. 🙈
• src_clk — the returned main timer value, and it's in nanoseconds units. that's the whole point of the function, so like… don't forget to pass it. 😭
• sts — optional parameter for holding a pair of system timestamps from the system clock. and listen — if you give it NULL, it will be ignored. completely. no cap. so it's optional optional. 💀

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🔥 RETURN 🔥

• on success you get the device clock time. slay. 🌟
• otherwise you get -errno. not slay. 😔

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👑 SEE ALSO 👑

the whole friend group, fr fr — they all live in the kernel file ./drivers/net/ethernet/intel/idpf/idpf_ptp.c:

• idpf_ptp_get_access(9)
• idpf_ptp_get_features_access(9)
• idpf_ptp_enable_shtime(9)
• idpf_ptp_read_src_clk_reg_direct(9)
• idpf_ptp_read_src_clk_reg_mailbox(9)
• idpf_ptp_get_sync_device_time_direct(9)
• idpf_ptp_get_sync_device_time_mailbox(9)
• idpf_ptp_get_sync_device_time(9)
• idpf_ptp_get_crosststamp(9)
• idpf_ptp_gettimex64(9)
• idpf_ptp_update_phctime_rxq_grp(9)
• idpf_ptp_update_cached_phctime(9)
• idpf_ptp_settime64(9)
• idpf_ptp_adjtime_nonatomic(9)
• idpf_ptp_adjtime(9)
• idpf_ptp_adjfine(9)
• idpf_ptp_verify_pin(9)
• idpf_ptp_gpio_enable(9)
• idpf_ptp_tstamp_extend_32b_to_64b(9)
• idpf_ptp_extend_ts(9)
• idpf_ptp_request_ts(9)
• idpf_ptp_set_rx_tstamp(9)
• idpf_ptp_set_timestamp_mode(9)
• idpf_tstamp_task(9)
• idpf_ptp_do_aux_work(9)
• idpf_ptp_set_caps(9)
• idpf_ptp_create_clock(9)
• idpf_ptp_release_vport_tstamp(9)
• idpf_ptp_release_tstamp(9)
• idpf_ptp_get_txq_tstamp_capability(9)
• idpf_ptp_init(9)
• idpf_ptp_release(9)

go bother them next, iykyk 💖

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quick vibe check 🧚: if sts is NULL it gets ignored — that's it, that's the caveat, no dramatic warnings here.

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and that's the page!! mwah 💋 this one comes to you from the kernel source tree at ./drivers/net/ethernet/intel/idpf, dated October 2026, and it's filed under idpf_ptp_read_src_clk_reg(9) — so if you ever forget where it came from, it's right there in the folder like a little name tag. ily, go read your timers responsibly 🎀✨🦋