C++ (Cpp) do_pio_write Examples

Example #1

static void pio_tasklet(unsigned long data)
{
	struct s3cmci_host *host = (struct s3cmci_host *) data;

	disable_irq(host->irq);

	if (host->pio_active == XFER_WRITE)
		do_pio_write(host);

	if (host->pio_active == XFER_READ)
		do_pio_read(host);

	if (host->complete_what == COMPLETION_FINALIZE) {
		clear_imask(host);
		if (host->pio_active != XFER_NONE) {
			dbg(host, dbg_err, "unfinished %s "
				"- pio_count:[%u] pio_words:[%u]\n",
				(host->pio_active == XFER_READ)?"read":"write",
				host->pio_count, host->pio_words);

			host->mrq->data->error = -EIO;
//			host->mrq->data->error = MMC_ERR_DMA;
		}
		finalize_request(host);
	} else
		enable_irq(host->irq);
}

Example #2

File: s3cmci.c Project: maraz/linux-2.6

static int s3cmci_prepare_pio(struct s3cmci_host *host, struct mmc_data *data)
{
	int rw = (data->flags & MMC_DATA_WRITE) ? 1 : 0;

	BUG_ON((data->flags & BOTH_DIR) == BOTH_DIR);

	host->pio_sgptr = 0;
	host->pio_words = 0;
	host->pio_count = 0;
	host->pio_active = rw ? XFER_WRITE : XFER_READ;

	if (rw) {
		do_pio_write(host);
		enable_imask(host, S3C2410_SDIIMSK_TXFIFOHALF);
	} else {
		enable_imask(host, S3C2410_SDIIMSK_RXFIFOHALF
			     | S3C2410_SDIIMSK_RXFIFOLAST);
	}

	return 0;
}