STRUCT AD_SIGMA_DELTA_INFO(9)

✨ NAME ✨

okay bestie, welcome to the Kernel API Manual 💖 this one is all about struct ad_sigma_delta_info — Sigma Delta driver specific callbacks and options. it's giving “driver config bag with main character energy” and we're obsessed.

🦋 SYNOPSIS 🦋

here's the exact struct, no cap:

       struct ad_sigma_delta_info {
           int (*set_channel)(struct ad_sigma_delta *, unsigned int channel);
           int (*append_status)(struct ad_sigma_delta *, bool append);
           int (*set_mode)(struct ad_sigma_delta *, enum ad_sigma_delta_mode
       mode);
           int (*disable_all)(struct ad_sigma_delta *);
           int (*disable_one)(struct ad_sigma_delta *, unsigned int chan);
           int (*postprocess_sample)(struct ad_sigma_delta *, unsigned int
       raw_sample);
           bool has_registers;
           bool has_named_irqs;
           bool supports_spi_offload;
           unsigned int addr_shift;
           unsigned int read_mask;
           unsigned int status_ch_mask;
           unsigned int data_reg;
           unsigned long irq_flags;
           unsigned int num_slots;
           unsigned int num_resetclks;
        };

🎀 Members 🎀

okay so member by member, here's the vibe check 👇

• set_channel — Will be called to select the current channel, may be NULL. 💅
• append_status — Will be called to enable status append at the end of the sample, may be NULL. 🫶
• set_mode — Will be called to select the current mode, may be NULL. ✨
• disable_all — Will be called to disable all channels, may be NULL. 🧚
• disable_one — Will be called to disable a single channel after ad_sigma_delta_single_conversion, may be NULL. Usage of this callback expects iio_chan_spec.address to contain the value required for the driver to identify the channel. 🔥
• postprocess_sample — Is called for each sampled data word, can be used to modify or drop the sample data, it may be NULL. 💀
• has_registers — true if the device has writable and readable registers, false if there is just one read-only sample data shift register. 🦋
• has_named_irqs — Set to true if there is more than one IRQ line. 🌈
• supports_spi_offload — Set to true if the driver supports SPI offload. Often special considerations are needed for scan_type and other channel info, so individual drivers have to set this to let the core code know that it can use SPI offload if it is available. ⭐
• addr_shift — Shift of the register address in the communications register. 🎀
• read_mask — Mask for the communications register having the read bit set. 💜
• status_ch_mask — Mask for the channel number stored in status register. 🌸
• data_reg — Address of the data register, if 0 the default address of 0x3 will be used. 🍓
• irq_flags — flags for the interrupt used by the triggered buffer. 🙈
• num_slots — Number of sequencer slots. 👑
• num_resetclks — Number of SPI clk cycles with MOSI=1 to reset the chip. 😭

👑 SEE ALSO 👑

• Kernel file ./include/linux/iio/adc/ad_sigma_delta.h
• struct ad_sigma_delta(9)

catch you in the kernel, bestie 🫶 this page comes from the source/version corner ./include/linux/iio/adc, dated October 2026, and it's literally all about struct ad_sigma_delta_info(9) 💖✨🦋