Struct mnemos_d1_core::drivers::smhc::Smhc

pub struct Smhc {
    isr: &'static IsrData,
    smhc: &'static RegisterBlock,
    int: (Interrupt, fn()),
    num: u8,
}

Fields

isr: &'static IsrData

smhc: &'static RegisterBlock

int: (Interrupt, fn())

num: u8

Implementations

impl Smhc

pub unsafe fn smhc0(smhc: SMHC0, ccu: &mut Ccu, gpio: &mut GPIO) -> Self

Initialize SMHC0 for SD cards.

Safety

• The SMHC0 register block must not be concurrently written to.
• This function should be called only while running on an Allwinner D1.

pub unsafe fn smhc1(_smhc: SMHC1, _ccu: &mut Ccu, _gpio: &mut GPIO) -> Self

Initialize SMHC1 for SDIO cards.

Safety

TODO

pub unsafe fn smhc2(_smhc: SMHC2, _ccu: &mut Ccu, _gpio: &mut GPIO) -> Self

Initialize SMHC2 for MMC cards.

Safety

TODO

unsafe fn init( smhc: &'static RegisterBlock, int: Interrupt, isr: fn(), num: u8, ) -> Self

This assumes the GPIO pin mappings and module clock are already configured.

fn reset_fifo(regs: &RegisterBlock)

unsafe fn prepare_dma(&self, descriptor: &Descriptor, byte_cnt: u32)

Safety

The descriptor chain needs to live at least as long as the DMA transfer. Additionally, their content (e.g., the validity of the buffers they point to) also needs to be verified by the user.

pub fn interrupt(&self) -> (Interrupt, fn())

Returns the interrupt and ISR for this SMHC.

pub fn handle_smhc0_interrupt()

Handle an interrupt for SMHC0

pub async fn register( self, kernel: &'static Kernel, queued: usize, ) -> Result<(), RegistrationError>

async fn run(self, rx: RequestStream<SdmmcService>)

async fn command(&self, params: Command) -> Result<Response, Error>