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C++ sdhci_readb函数代码示例

本文整理汇总了C++中sdhci_readb函数的典型用法代码示例。如果您正苦于以下问题：C++ sdhci_readb函数的具体用法？C++ sdhci_readb怎么用？C++ sdhci_readb使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了sdhci_readb函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: sdhci_save_regs

static void sdhci_save_regs(struct sdhci_host *host)
{
	if (!strcmp("Spread SDIO host1", host->hw_name)){
		host_addr = sdhci_readl(host, SDHCI_DMA_ADDRESS);
		host_blk_size = sdhci_readw(host, SDHCI_BLOCK_SIZE);
		host_blk_cnt = sdhci_readw(host, SDHCI_BLOCK_COUNT);
		host_arg = sdhci_readl(host, SDHCI_ARGUMENT);
		host_tran_mode = sdhci_readw(host, SDHCI_TRANSFER_MODE);
		host_ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
		host_power = sdhci_readb(host, SDHCI_POWER_CONTROL);
		host_clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
	}
}
开发者ID:LinkLunk，项目名称:android_kernel_samsung_mint，代码行数:13，代码来源:sc8810g.c

示例2: sdhci_display_bus_width

static void sdhci_display_bus_width(struct sdhci_ctrlr *sdhci_ctrlr)
{
	if (IS_ENABLED(CONFIG_SDHC_DEBUG)) {
		int bits;
		uint8_t host_ctrl;
		uint16_t host2;
		const char *rate;
		uint16_t timing;

		/* Display the bus width */
		host_ctrl = sdhci_readb(sdhci_ctrlr, SDHCI_HOST_CONTROL);
		host2 = sdhci_readw(sdhci_ctrlr, SDHCI_HOST_CONTROL2);
		timing = host2 & SDHCI_CTRL_UHS_MASK;
		bits = 1;
		if (host_ctrl & SDHCI_CTRL_8BITBUS)
			bits = 8;
		else if (host_ctrl & SDHCI_CTRL_4BITBUS)
			bits = 4;
		rate = "SDR";
		if ((timing == SDHCI_CTRL_UHS_DDR50)
			|| (timing == SDHCI_CTRL_HS400))
			rate = "DDR";
		sdhc_debug("SDHCI bus width: %d bit%s %s\n", bits,
			(bits != 1) ? "s" : "", rate);
	}
}
开发者ID:lkundrak，项目名称:coreboot，代码行数:26，代码来源:sdhci_display.c

示例3: sdhci_set_ios

void sdhci_set_ios(struct mmc *mmc)
{
    u32 ctrl;
    struct sdhci_host *host = (struct sdhci_host *)mmc->priv;

    if (mmc->clock != host->clock)
        sdhci_set_clock(mmc, mmc->clock);

    /* Set bus width */
    ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
    if (mmc->bus_width == 8) {
        ctrl &= ~SDHCI_CTRL_4BITBUS;
        if (host->version >= SDHCI_SPEC_300)
            ctrl |= SDHCI_CTRL_8BITBUS;
    } else {
        if (host->version >= SDHCI_SPEC_300)
            ctrl &= ~SDHCI_CTRL_8BITBUS;
        if (mmc->bus_width == 4)
            ctrl |= SDHCI_CTRL_4BITBUS;
        else
            ctrl &= ~SDHCI_CTRL_4BITBUS;
    }

    if (mmc->clock > 26000000)
        ctrl |= SDHCI_CTRL_HISPD;
    else
        ctrl &= ~SDHCI_CTRL_HISPD;

    sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
开发者ID:chinyeungli，项目名称:u-boot，代码行数:30，代码来源:sdhci.c

示例4: tegra_sdhci_restore

static int tegra_sdhci_restore(struct sdhci_host *sdhost)
{
	unsigned long timeout;
	u8 mask = SDHCI_RESET_ALL;

	sdhci_writeb(sdhost, mask, SDHCI_SOFTWARE_RESET);

	sdhost->clock = 0;

	/* Wait max 100 ms */
	timeout = 100;

	/* hw clears the bit when it's done */
	while (sdhci_readb(sdhost, SDHCI_SOFTWARE_RESET) & mask) {
		if (timeout == 0) {
			printk(KERN_ERR "%s: Reset 0x%x never completed.\n",
				mmc_hostname(sdhost->mmc), (int)mask);
			return -EIO;
		}
		timeout--;
		mdelay(1);
	}

	tegra_sdhci_restore_interrupts(sdhost);
	return 0;
}
开发者ID:Jb2005，项目名称:SamSung-Galaxy-Tab-10.1-Model-GT-P7510，代码行数:26，代码来源:sdhci-tegra.c

示例5: sdhci_s3c_platform_bus_width

/**
 * sdhci_s3c_platform_bus_width - support 8bit buswidth
 * @host: The SDHCI host being queried
 * @width: MMC_BUS_WIDTH_ macro for the bus width being requested
 *
 * We have 8-bit width support but is not a v3 controller.
 * So we add platform_bus_width() and support 8bit width.
 */
static int sdhci_s3c_platform_bus_width(struct sdhci_host *host, int width)
{
	u8 ctrl;

	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);

	switch (width) {
	case MMC_BUS_WIDTH_8:
		ctrl |= SDHCI_CTRL_8BITBUS;
		ctrl &= ~SDHCI_CTRL_4BITBUS;
		break;
	case MMC_BUS_WIDTH_4:
		ctrl |= SDHCI_CTRL_4BITBUS;
		ctrl &= ~SDHCI_CTRL_8BITBUS;
		break;
	default:
		ctrl &= ~SDHCI_CTRL_4BITBUS;
		ctrl &= ~SDHCI_CTRL_8BITBUS;
		break;
	}

	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);

	return 0;
}
开发者ID:garyvan，项目名称:openwrt-1.6，代码行数:33，代码来源:sdhci-s3c.c

示例6: sdhci_s3c_platform_8bit_width

/**
 * sdhci_s3c_platform_8bit_width - support 8bit buswidth
 * @host: The SDHCI host being queried
 * @width: MMC_BUS_WIDTH_ macro for the bus width being requested
 *
 * We have 8-bit width support but is not a v3 controller.
 * So we add platform_8bit_width() and support 8bit width.
 */
static int sdhci_s3c_platform_8bit_width(struct sdhci_host *host, int width)
{
	u8 ctrl;
	struct sdhci_s3c *ourhost = to_s3c(host);

	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);

	switch (width) {
	case MMC_BUS_WIDTH_8:
		ctrl |= SDHCI_CTRL_8BITBUS;
		ctrl &= ~SDHCI_CTRL_4BITBUS;
		/* call cfg_gpio with 8bit data bus */
		if (ourhost->pdata->cfg_gpio)
			ourhost->pdata->cfg_gpio(ourhost->pdev, 8);
		break;
	case MMC_BUS_WIDTH_4:
		ctrl |= SDHCI_CTRL_4BITBUS;
		ctrl &= ~SDHCI_CTRL_8BITBUS;
		/* call cfg_gpio with 4bit data bus */
		if (ourhost->pdata->cfg_gpio)
			ourhost->pdata->cfg_gpio(ourhost->pdev, 4);
		break;
	default:
		ctrl &= ~SDHCI_CTRL_8BITBUS;
		ctrl &= ~SDHCI_CTRL_4BITBUS;
		/* call cfg_gpio with 1bit data bus */
		if (ourhost->pdata->cfg_gpio)
			ourhost->pdata->cfg_gpio(ourhost->pdev, 1);
		break;
	}

	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);

	return 0;
}
开发者ID:1yankeedt，项目名称:D710BST_FL24_Kernel，代码行数:43，代码来源:sdhci-s3c.c

示例7: sdhci_dumpregs

void sdhci_dumpregs(struct sdhci_host *host)
{
	int i = 0;
	printf(KERN_DEBUG DRIVER_NAME ": ============== REGISTER DUMP ==============\n");
	printf(KERN_DEBUG DRIVER_NAME ":AHB CTRL 0x%08x\n", *((unsigned int*)0x20900200));
#if 1
	for(i = 0; i < MAX_DUMP_NUM; i++){
		printf(KERN_DEBUG DRIVER_NAME ": address 0x%08x | value 0x%08x\n", host->ioaddr + i*4, sdhci_readl(host, i*4));
	}
#endif

	printf(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version:  0x%08x\n",
			sdhci_readl(host, SDHCI_DMA_ADDRESS),
			sdhci_readw(host, SDHCI_HOST_VERSION));
	printf(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt:  0x%08x\n",
			sdhci_readw(host, SDHCI_BLOCK_SIZE),
			sdhci_readw(host, SDHCI_BLOCK_COUNT));
	printf(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
			sdhci_readl(host, SDHCI_ARGUMENT),
			sdhci_readw(host, SDHCI_TRANSFER_MODE));
	printf(KERN_DEBUG DRIVER_NAME ": Present:  0x%08x | Host ctl: 0x%08x\n",
			sdhci_readl(host, SDHCI_PRESENT_STATE),
			sdhci_readb(host, SDHCI_HOST_CONTROL));
	printf(KERN_DEBUG DRIVER_NAME ": Power:    0x%08x | Blk gap:  0x%08x\n",
			sdhci_readb(host, SDHCI_POWER_CONTROL),
			sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL));
	printf(KERN_DEBUG DRIVER_NAME ": Wake-up:  0x%08x | Clock:    0x%08x\n",
			sdhci_readb(host, SDHCI_WAKE_UP_CONTROL),
			sdhci_readw(host, SDHCI_CLOCK_CONTROL));
	printf(KERN_DEBUG DRIVER_NAME ": Timeout:  0x%08x | Int stat: 0x%08x\n",
			sdhci_readb(host, SDHCI_TIMEOUT_CONTROL),
			sdhci_readl(host, SDHCI_INT_STATUS));
	printf(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
			sdhci_readl(host, SDHCI_INT_ENABLE),
			sdhci_readl(host, SDHCI_SIGNAL_ENABLE));
	printf(KERN_DEBUG DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n",
			sdhci_readw(host, SDHCI_ACMD12_ERR),
			sdhci_readw(host, SDHCI_SLOT_INT_STATUS));
	printf(KERN_DEBUG DRIVER_NAME ": Caps:     0x%08x | Max curr: 0x%08x\n",
			sdhci_readl(host, SDHCI_CAPABILITIES),
			sdhci_readl(host, SDHCI_MAX_CURRENT));

		printf(KERN_DEBUG DRIVER_NAME ": ADMA Err: 0x%08x | ADMA Ptr: 0x%08x\n",
				readl(host->ioaddr + SDHCI_ADMA_ERROR),
				readl(host->ioaddr + SDHCI_ADMA_ADDRESS));
	printf(KERN_DEBUG DRIVER_NAME ": ===========================================\n");
}
开发者ID:yourfrienddhruv，项目名称:zen_u105_uboot，代码行数:47，代码来源:mv_sdhci.c

示例8: init_kona_mmc_core

static int init_kona_mmc_core(struct sdhci_host *host)
{
	unsigned int mask;
	unsigned int timeout;

	if (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & SDHCI_RESET_ALL) {
		printf("%s: sd host controller reset error\n", __func__);
		return -EBUSY;
	}

	/* For kona a hardware reset before anything else. */
	mask = sdhci_readl(host, SDHCI_CORECTRL_OFFSET) | SDHCI_CORECTRL_RESET;
	sdhci_writel(host, mask, SDHCI_CORECTRL_OFFSET);

	/* Wait max 100 ms */
	timeout = 1000;
	do {
		if (timeout == 0) {
			printf("%s: reset timeout error\n", __func__);
			return -ETIMEDOUT;
		}
		timeout--;
		udelay(100);
	} while (0 ==
		 (sdhci_readl(host, SDHCI_CORECTRL_OFFSET) &
		  SDHCI_CORECTRL_RESET));

	/* Clear the reset bit. */
	mask = mask & ~SDHCI_CORECTRL_RESET;
	sdhci_writel(host, mask, SDHCI_CORECTRL_OFFSET);

	/* Enable AHB clock */
	mask = sdhci_readl(host, SDHCI_CORECTRL_OFFSET);
	sdhci_writel(host, mask | SDHCI_CORECTRL_EN, SDHCI_CORECTRL_OFFSET);

	/* Enable interrupts */
	sdhci_writel(host, SDHCI_COREIMR_IP, SDHCI_COREIMR_OFFSET);

	/* Make sure Card is detected in controller */
	mask = sdhci_readl(host, SDHCI_CORESTAT_OFFSET);
	sdhci_writel(host, mask | SDHCI_CORESTAT_CD_SW, SDHCI_CORESTAT_OFFSET);

	/* Wait max 100 ms */
	timeout = 1000;
	while (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
		if (timeout == 0) {
			printf("%s: CARD DETECT timeout error\n", __func__);
			return -ETIMEDOUT;
		}
		timeout--;
		udelay(100);
	}
	return 0;
}
开发者ID:OpenPhoenux，项目名称:gta04-uboot，代码行数:54，代码来源:kona_sdhci.c

示例9: sdhci_transfer_data

static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data,
				unsigned int start_addr)
{
	unsigned int stat, rdy, mask, timeout, block = 0;
	bool transfer_done = false;
#ifdef CONFIG_MMC_SDHCI_SDMA
	unsigned char ctrl;
	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
	ctrl &= ~SDHCI_CTRL_DMA_MASK;
	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
#endif

	timeout = 1000000;
	rdy = SDHCI_INT_SPACE_AVAIL | SDHCI_INT_DATA_AVAIL;
	mask = SDHCI_DATA_AVAILABLE | SDHCI_SPACE_AVAILABLE;
	do {
		stat = sdhci_readl(host, SDHCI_INT_STATUS);
		if (stat & SDHCI_INT_ERROR) {
			pr_debug("%s: Error detected in status(0x%X)!\n",
				 __func__, stat);
			return -EIO;
		}
		if (!transfer_done && (stat & rdy)) {
			if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & mask))
				continue;
			sdhci_writel(host, rdy, SDHCI_INT_STATUS);
			sdhci_transfer_pio(host, data);
			data->dest += data->blocksize;
			if (++block >= data->blocks) {
				/* Keep looping until the SDHCI_INT_DATA_END is
				 * cleared, even if we finished sending all the
				 * blocks.
				 */
				transfer_done = true;
				continue;
			}
		}
#ifdef CONFIG_MMC_SDHCI_SDMA
		if (!transfer_done && (stat & SDHCI_INT_DMA_END)) {
			sdhci_writel(host, SDHCI_INT_DMA_END, SDHCI_INT_STATUS);
			start_addr &= ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1);
			start_addr += SDHCI_DEFAULT_BOUNDARY_SIZE;
			sdhci_writel(host, start_addr, SDHCI_DMA_ADDRESS);
		}
#endif
		if (timeout-- > 0)
			udelay(10);
		else {
			printf("%s: Transfer data timeout\n", __func__);
			return -ETIMEDOUT;
		}
	} while (!(stat & SDHCI_INT_DATA_END));
	return 0;
}
开发者ID:Noltari，项目名称:u-boot，代码行数:54，代码来源:sdhci.c

示例10: sdhci_cmd_done

static void sdhci_cmd_done(struct sdhci_host *host, struct mmc_cmd *cmd)
{
	int i;
	if (cmd->resp_type & MMC_RSP_136) {
		/* CRC is stripped so we need to do some shifting. */
		for (i = 0; i < 4; i++) {
			cmd->response[i] = sdhci_readl(host,
					SDHCI_RESPONSE + (3-i)*4) << 8;
			if (i != 3)
				cmd->response[i] |= sdhci_readb(host,
						SDHCI_RESPONSE + (3-i)*4-1);
		}
	} else {
		cmd->response[0] = sdhci_readl(host, SDHCI_RESPONSE);
	}
}
开发者ID:DFE，项目名称:u-boot，代码行数:16，代码来源:sdhci.c

示例11: sdhci_reset

static void sdhci_reset(struct sdhci_host *host, u8 mask)
{
	unsigned long timeout;

	/* Wait max 100 ms */
	timeout = 100;
	sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);
	while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) {
		if (timeout == 0) {
			printf("Reset 0x%x never completed.\n", (int)mask);
			return;
		}
		timeout--;
		udelay(1000);
	}
}
开发者ID:DFE，项目名称:u-boot，代码行数:16，代码来源:sdhci.c

示例12: sdhci_transfer_data

static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data,
				unsigned int start_addr)
{
	unsigned int stat, rdy, mask, timeout, block = 0;
#ifdef CONFIG_MMC_SDMA
	unsigned char ctrl;
	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
	ctrl &= ~SDHCI_CTRL_DMA_MASK;
	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
#endif

	timeout = 90000000;
	rdy = SDHCI_INT_SPACE_AVAIL | SDHCI_INT_DATA_AVAIL;
	mask = SDHCI_DATA_AVAILABLE | SDHCI_SPACE_AVAILABLE;
	do {
		stat = sdhci_readl(host, SDHCI_INT_STATUS);
		if (stat & SDHCI_INT_ERROR) {
			errorf("%s: Error detected in status(0x%X)!\n",
			       __func__, stat);
			return -1;
		}
		if (stat & rdy) {
			if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & mask))
				continue;
			sdhci_writel(host, rdy, SDHCI_INT_STATUS);
			sdhci_transfer_pio(host, data);
			data->dest += data->blocksize;
			if (++block >= data->blocks)
				break;
		}
#ifdef CONFIG_MMC_SDMA
		if (stat & SDHCI_INT_DMA_END) {
			sdhci_writel(host, SDHCI_INT_DMA_END, SDHCI_INT_STATUS);
			start_addr &= ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1);
			start_addr += SDHCI_DEFAULT_BOUNDARY_SIZE;
			sdhci_writel(host, start_addr, SDHCI_DMA_ADDRESS);
		}
#endif
		if (timeout-- > 0)
			udelay(10);
		else {
			errorf("%s: Transfer data timeout\n", __func__);
			return -1;
		}
	} while (!(stat & SDHCI_INT_DATA_END));
	return 0;
}
开发者ID:sky8336，项目名称:mn201307，代码行数:47，代码来源:sdhci.c

示例13: bcm_kona_sd_reset

static int bcm_kona_sd_reset(struct sdio_dev *dev)
{
	struct sdhci_host *host = dev->host;
	unsigned int val;
#ifdef CONFIG_ARCH_CAPRI
	unsigned int tries = 10000;
#endif
	unsigned long timeout;

	/* Reset host controller by setting 'Software Reset for All' */
	sdhci_writeb(host, SDHCI_RESET_ALL, SDHCI_SOFTWARE_RESET);

	/* Wait for 100 ms max (100ms timeout is taken from sdhci.c) */
	timeout = jiffies + msecs_to_jiffies(100);

	while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & SDHCI_RESET_ALL) {
		if (time_is_before_jiffies(timeout)) {
			dev_err(dev->dev, "Error: sd host is in reset!!!\n");
			return -EFAULT;
		}
	}

	/* reset the host using the top level reset */
	val = sdhci_readl(host, KONA_SDHOST_CORECTRL);
	val |= KONA_SDHOST_RESET;
	sdhci_writel(host, val, KONA_SDHOST_CORECTRL);
	do {
		val = sdhci_readl(host, KONA_SDHOST_CORECTRL);
#ifdef CONFIG_ARCH_CAPRI
		if (--tries <= 0)
			break;
#endif
	} while (0 == (val & KONA_SDHOST_RESET));

	/* bring the host out of reset */
	val = sdhci_readl(host, KONA_SDHOST_CORECTRL);
	val &= ~KONA_SDHOST_RESET;

	/* Back-to-Back register write needs a delay of 1ms
	 * at bootup (min 10uS)
	 */
	udelay(1000);
	sdhci_writel(host, val, KONA_SDHOST_CORECTRL);

	return 0;
}
开发者ID:CVlaspoel，项目名称:VSMC-i9105p，代码行数:46，代码来源:sdhci-pltfm-kona.c

示例14: sdhci_set_ios

static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
	u32 ctrl;
	struct sdhci_host *host = mmc_priv(mmc);

	if (host->ops.set_control_reg) {
		host->ops.set_control_reg(host);
	}

	if (ios->clock != host->clock) {
		sdhci_set_clock(mmc, ios->clock);
	}

	/* Set bus width */
	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
	if (ios->bus_width == 8) {
		ctrl &= ~SDHCI_CTRL_4BITBUS;
		if ((host->sdhci_version & SDHCI_SPEC_VER_MASK) >= 
							SDHCI_SPEC_300) {
			ctrl |= SDHCI_CTRL_8BITBUS;
		}
	} else {
		if ((host->sdhci_version & SDHCI_SPEC_VER_MASK) >= 
							SDHCI_SPEC_300) {
			ctrl &= ~SDHCI_CTRL_8BITBUS;
		}
		if (ios->bus_width == 4) {
			ctrl |= SDHCI_CTRL_4BITBUS;
		} else {
			ctrl &= ~SDHCI_CTRL_4BITBUS;
		}
	}

	if (ios->clock > 26000000) {
		ctrl |= SDHCI_CTRL_HISPD;
	} else {
		ctrl &= ~SDHCI_CTRL_HISPD;
	}

	if (host->quirks & SDHCI_QUIRK_NO_HISPD_BIT) {
		ctrl &= ~SDHCI_CTRL_HISPD;
	}

	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
开发者ID:Florentah，项目名称:xvisor-next，代码行数:45，代码来源:sdhci.c

示例15: sdhci_set_ios

static int sdhci_set_ios(struct udevice *dev)
{
	struct mmc *mmc = mmc_get_mmc_dev(dev);
#else
static int sdhci_set_ios(struct mmc *mmc)
{
#endif
	u32 ctrl;
	struct sdhci_host *host = mmc->priv;

	if (host->ops && host->ops->set_control_reg)
		host->ops->set_control_reg(host);

	if (mmc->clock != host->clock)
		sdhci_set_clock(mmc, mmc->clock);

	/* Set bus width */
	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
	if (mmc->bus_width == 8) {
		ctrl &= ~SDHCI_CTRL_4BITBUS;
		if ((SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) ||
				(host->quirks & SDHCI_QUIRK_USE_WIDE8))
			ctrl |= SDHCI_CTRL_8BITBUS;
	} else {
		if ((SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) ||
				(host->quirks & SDHCI_QUIRK_USE_WIDE8))
			ctrl &= ~SDHCI_CTRL_8BITBUS;
		if (mmc->bus_width == 4)
			ctrl |= SDHCI_CTRL_4BITBUS;
		else
			ctrl &= ~SDHCI_CTRL_4BITBUS;
	}

	if (mmc->clock > 26000000)
		ctrl |= SDHCI_CTRL_HISPD;
	else
		ctrl &= ~SDHCI_CTRL_HISPD;

	if (host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)
		ctrl &= ~SDHCI_CTRL_HISPD;

	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);

	return 0;
}
开发者ID:jhofstee，项目名称:u-boot，代码行数:45，代码来源:sdhci.c


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