STRUCT S3C64XX_SPI_DRIVER_DATA(9)

💅 struct s3c64xx_spi_driver_data — Runtime info holder for SPI driver

okay bestie, welcome to the Kernel API Manual page for struct s3c64xx_spi_driver_data ✨ this one's literally just the little home where the SPI driver keeps all its runtime info — think of it as the driver's emotional support struct 🫶 let's get into it.

🦋 SYNOPSIS 🦋

here's the whole squad, laid out exactly as it lives:

struct s3c64xx_spi_driver_data {
    void __iomem                    *regs;
    struct clk                      *clk;
    struct clk                      *src_clk;
    struct clk                      *ioclk;
    struct platform_device          *pdev;
    struct spi_controller           *host;
    struct s3c64xx_spi_info         *cntrlr_info;
    spinlock_t lock;
    unsigned long                   sfr_start;
    struct completion               xfer_completion;
    unsigned state;
    unsigned cur_mode, cur_bpw;
    unsigned cur_speed;
    struct s3c64xx_spi_dma_data     rx_dma;
    struct s3c64xx_spi_dma_data     tx_dma;
    const struct s3c64xx_spi_port_config    *port_conf;
    unsigned int                    port_id;
    unsigned int                    fifo_depth;
    u32 rx_fifomask;
    u32 tx_fifomask;
 };

no cap, that's the whole vibe 💖

🌸 Members 🌸

okay so every single field, one by one, no skipping (i would never 🙈):

• regs — pointer to the ioremap'ed controller registers. that's the controller's whole memory-mapped situation, mapped in 💅
• clk — pointer to the spi clock ⏰
• src_clk — pointer to the clock used to generate SPI signals. this is the one actually making the waveforms happen ✨
• ioclk — pointer to the i/o clock between host and target 🔄
• pdev — pointer to device's platform device data 🎀
• host — pointer to the SPI Protocol host 👑
• cntrlr_info — platform specific data for the controller this driver manages. very "this controller, specifically" energy 🦋
• lock — controller specific lock 🔒
• sfr_start — BUS address of SPI controller regs 📍
• xfer_completion — to indicate completion of xfer task. it's the little "we're done!!" signal 😭✨
• state — set of FLAGS to indicate status 🚩
• cur_mode — stores the active configuration of the controller ⚙️
• cur_bpw — stores the active bits per word settings. bits! per! word! 🔢
• cur_speed — current clock speed 🏎️
• rx_dma — local receive DMA data (e.g. chan and direction) 📥
• tx_dma — local transmit DMA data (e.g. chan and direction) 📤
• port_conf — local SPI port configuration data 🎛️
• port_id — [DEPRECATED] use {rx,tx}_fifomask instead. yeah she's old news, don't use her bestie 💀
• fifo_depth — depth of the FIFO 🥤
• rx_fifomask — SPI_STATUS.RX_FIFO_LVL mask. Shifted mask defining the field's length and position 🎯
• tx_fifomask — SPI_STATUS.TX_FIFO_LVL mask. Shifted mask defining the field's length and position 🎯

⭐ SEE ALSO ⭐

• Kernel file ./drivers/spi/spi-s3c64xx.c struct s3c64xx_spi_port_config(9)

💜 tiny reminder: port_id is deprecated, so if you're out here reaching for it, maybe don't? use {rx,tx}_fifomask instead. iykyk 😌

and that's the page!! this one lives in ./drivers/spi, dated October 2026, from the Kernel API Manual — mwah, go read the source, ily, bye 🧚‍♀️💖🎀