C++ (Cpp) ftsdc010_clksetの例

コード例 #1

ファイル: ftsdc010_mci.c プロジェクト: Noltari/u-boot

static int ftsdc010_init(struct mmc *mmc)
{
	struct ftsdc010_chip *chip = mmc->priv;
	struct ftsdc010_mmc __iomem *regs = chip->regs;
	uint32_t ts;

	chip->fifo = (readl(&regs->feature) & 0xff) << 2;

	/* 1. chip reset */
	writel(FTSDC010_CMD_SDC_RST, &regs->cmd);
	for (ts = get_timer(0); get_timer(ts) < CFG_RST_TIMEOUT; ) {
		if (readl(&regs->cmd) & FTSDC010_CMD_SDC_RST)
			continue;
		break;
	}
	if (readl(&regs->cmd) & FTSDC010_CMD_SDC_RST) {
		printf("ftsdc010: reset failed\n");
		return -EOPNOTSUPP;
	}

	/* 2. enter low speed mode (400k card detection) */
	ftsdc010_clkset(mmc, 400000);

	/* 3. interrupt disabled */
	writel(0, &regs->int_mask);

	return 0;
}

コード例 #2

ファイル: ftsdc010_mci.c プロジェクト: OpenPhoenux/gta04-uboot

static void ftsdc010_set_ios(struct mmc *mmc)
{
	struct ftsdc010_chip *chip = mmc->priv;
	struct ftsdc010_mmc __iomem *regs = chip->regs;

	ftsdc010_clkset(mmc, mmc->clock);

	clrbits_le32(&regs->bwr, FTSDC010_BWR_MODE_MASK);
	switch (mmc->bus_width) {
	case 4:
		setbits_le32(&regs->bwr, FTSDC010_BWR_MODE_4BIT);
		break;
	case 8:
		setbits_le32(&regs->bwr, FTSDC010_BWR_MODE_8BIT);
		break;
	default:
		setbits_le32(&regs->bwr, FTSDC010_BWR_MODE_1BIT);
		break;
	}
}