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描述文字

C++ sdhci_writeb函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中sdhci_writeb函数的典型用法代码示例。如果您正苦于以下问题：C++ sdhci_writeb函数的具体用法？C++ sdhci_writeb怎么用？C++ sdhci_writeb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_writeb函数的20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，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: sdhci_set_power

static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
{
	u8 pwr = 0;

	if (power != (unsigned short)-1) {
		switch (1 << power) {
		case MMC_VDD_165_195:
			pwr = SDHCI_POWER_180;
			break;
		case MMC_VDD_29_30:
		case MMC_VDD_30_31:
			pwr = SDHCI_POWER_300;
			break;
		case MMC_VDD_32_33:
		case MMC_VDD_33_34:
			pwr = SDHCI_POWER_330;
			break;
		}
	}

	if (pwr == 0) {
		sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
		return;
	}

	if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER)
		sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);

	pwr |= SDHCI_POWER_ON;

	sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
}
开发者ID:DFE，项目名称:u-boot，代码行数:32，代码来源:sdhci.c


示例2: tegra_sdhci_enable_clock

static void tegra_sdhci_enable_clock(struct tegra_sdhci_host *host, int enable)
{
	if (enable && !host->clk_enabled) {
		clk_enable(host->clk);
		sdhci_writeb(host->sdhci, 1, SDHCI_VENDOR_CLOCK_CNTRL);
		host->clk_enabled = 1;
	} else if (!enable && host->clk_enabled) {
		sdhci_writeb(host->sdhci, 0, SDHCI_VENDOR_CLOCK_CNTRL);
		clk_disable(host->clk);
		host->clk_enabled = 0;
	}
}
开发者ID:Jb2005，项目名称:SamSung-Galaxy-Tab-10.1-Model-GT-P7510，代码行数:12，代码来源:sdhci-tegra.c


示例3: sdhci_restore_regs

static void sdhci_restore_regs(struct sdhci_host *host)
{
	if (!strcmp("Spread SDIO host1", host->hw_name)){
		sdhci_writel(host, host_addr, SDHCI_DMA_ADDRESS);
		sdhci_writew(host, host_blk_size, SDHCI_BLOCK_SIZE);
		sdhci_writew(host, host_blk_cnt, SDHCI_BLOCK_COUNT);
		sdhci_writel(host, host_arg, SDHCI_ARGUMENT);
		sdhci_writew(host, host_tran_mode, SDHCI_TRANSFER_MODE);
		sdhci_writeb(host, host_ctrl, SDHCI_HOST_CONTROL);
		sdhci_writeb(host, host_power, SDHCI_POWER_CONTROL);
		sdhci_writew(host, host_clk, 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4: 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_init

static int sdhci_init(struct mmc *mmc)
{
    struct sdhci_host *host = mmc->priv;

    if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && !aligned_buffer) {
        aligned_buffer = memalign(8, 512*1024);
        if (!aligned_buffer) {
            printf("%s: Aligned buffer alloc failed!!!\n",
                   __func__);
            return -1;
        }
    }

    sdhci_set_power(host, fls(mmc->cfg->voltages) - 1);

    if (host->quirks & SDHCI_QUIRK_NO_CD) {
#if defined(CONFIG_PIC32_SDHCI)
        /* PIC32 SDHCI CD errata:
         * - set CD_TEST and clear CD_TEST_INS bit
         */
        sdhci_writeb(host, SDHCI_CTRL_CD_TEST, SDHCI_HOST_CONTROL);
#else
        unsigned int status;

        sdhci_writeb(host, SDHCI_CTRL_CD_TEST_INS | SDHCI_CTRL_CD_TEST,
                     SDHCI_HOST_CONTROL);

        status = sdhci_readl(host, SDHCI_PRESENT_STATE);
        while ((!(status & SDHCI_CARD_PRESENT)) ||
                (!(status & SDHCI_CARD_STATE_STABLE)) ||
                (!(status & SDHCI_CARD_DETECT_PIN_LEVEL)))
            status = sdhci_readl(host, SDHCI_PRESENT_STATE);
#endif
    }

    /* Enable only interrupts served by the SD controller */
    sdhci_writel(host, SDHCI_INT_DATA_MASK | SDHCI_INT_CMD_MASK,
                 SDHCI_INT_ENABLE);
    /* Mask all sdhci interrupt sources */
    sdhci_writel(host, 0x0, SDHCI_SIGNAL_ENABLE);

    return 0;
}
开发者ID:rchicoli，项目名称:u-boot，代码行数:43，代码来源:sdhci.c


示例8: 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9: tegra_sdhci_resume

static int tegra_sdhci_resume(struct platform_device *pdev)
{
	struct tegra_sdhci_host *host = platform_get_drvdata(pdev);
	int ret;
#ifdef CONFIG_MACH_SAMSUNG_VARIATION_TEGRA	
	int i, present;
#endif
	u8 pwr;
	if (host->card_always_on && is_card_sdio(host->sdhci->mmc->card)) {
		int ret = 0;

		if (device_may_wakeup(&pdev->dev)) {
		        disable_irq_wake(host->sdhci->irq);
		}

		/* soft reset SD host controller and enable interrupts */
		ret = tegra_sdhci_restore(host->sdhci);
		if (ret) {
			pr_err("%s: failed, error = %d\n", __func__, ret);
			return ret;
		}

		mmiowb();
#ifdef CONFIG_MACH_SAMSUNG_VARIATION_TEGRA
		for(i=0;i<20;i++){
			present = sdhci_readl(host->sdhci, SDHCI_PRESENT_STATE);
			if((present & SDHCI_CARD_PRESENT) == SDHCI_CARD_PRESENT)
				break;
			mdelay(5);
//			printk(KERN_ERR "MMC : %s : 6(Card Presnet %x) : %d \n",mmc_hostname(host->sdhci->mmc),present,i);
		}
#endif
		host->sdhci->mmc->ops->set_ios(host->sdhci->mmc,
			&host->sdhci->mmc->ios);
		return 0;
	}

	tegra_sdhci_enable_clock(host, 1);

	pwr = SDHCI_POWER_ON;
	sdhci_writeb(host->sdhci, pwr, SDHCI_POWER_CONTROL);
	host->sdhci->pwr = 0;

	ret = sdhci_resume_host(host->sdhci);
	if (ret)
		pr_err("%s: failed, error = %d\n", __func__, ret);

	return ret;
}
开发者ID:Jb2005，项目名称:SamSung-Galaxy-Tab-10.1-Model-GT-P7510，代码行数:49，代码来源:sdhci-tegra.c


示例10: 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11: 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12: 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13: 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


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: tegra_sdhci_reset_exit

static void tegra_sdhci_reset_exit(struct sdhci_host *host, u8 mask)
{
	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
	struct sdhci_tegra *tegra_host = pltfm_host->priv;
	const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;

	if (!(mask & SDHCI_RESET_ALL))
		return;

	/* Erratum: Enable SDHCI spec v3.00 support */
	if (soc_data->nvquirks & NVQUIRK_ENABLE_SDHCI_SPEC_300) {
		u32 misc_ctrl;

		misc_ctrl = sdhci_readb(host, SDHCI_TEGRA_VENDOR_MISC_CTRL);
		misc_ctrl |= SDHCI_MISC_CTRL_ENABLE_SDHCI_SPEC_300;
		sdhci_writeb(host, misc_ctrl, SDHCI_TEGRA_VENDOR_MISC_CTRL);
	}
}
开发者ID:AdrianHuang，项目名称:linux-3.8.13，代码行数:18，代码来源:sdhci-tegra.c


示例16: tegra_sdhci_set_bus_width

static void tegra_sdhci_set_bus_width(struct sdhci_host *host, int bus_width)
{
	u32 ctrl;

	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
	if ((host->mmc->caps & MMC_CAP_8_BIT_DATA) &&
	    (bus_width == MMC_BUS_WIDTH_8)) {
		ctrl &= ~SDHCI_CTRL_4BITBUS;
		ctrl |= SDHCI_CTRL_8BITBUS;
	} else {
		ctrl &= ~SDHCI_CTRL_8BITBUS;
		if (bus_width == MMC_BUS_WIDTH_4)
			ctrl |= SDHCI_CTRL_4BITBUS;
		else
			ctrl &= ~SDHCI_CTRL_4BITBUS;
	}
	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
开发者ID:michabs，项目名称:linux-imx6-3.14，代码行数:18，代码来源:sdhci-tegra.c


示例17: sdhci_sirf_set_bus_width

static void sdhci_sirf_set_bus_width(struct sdhci_host *host, int width)
{
	u8 ctrl;

	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
	ctrl &= ~(SDHCI_CTRL_4BITBUS | SDHCI_SIRF_8BITBUS);

	/*
	 * CSR atlas7 and prima2 SD host version is not 3.0
	 * 8bit-width enable bit of CSR SD hosts is 3,
	 * while stardard hosts use bit 5
	 */
	if (width == MMC_BUS_WIDTH_8)
		ctrl |= SDHCI_SIRF_8BITBUS;
	else if (width == MMC_BUS_WIDTH_4)
		ctrl |= SDHCI_CTRL_4BITBUS;

	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
开发者ID:asmalldev，项目名称:linux，代码行数:19，代码来源:sdhci-sirf.c


示例18: tegra_sdhci_resume

static int tegra_sdhci_resume(struct platform_device *pdev)
{
	struct tegra_sdhci_host *host = platform_get_drvdata(pdev);
	int ret;
	u8 pwr;

	MMC_printk("%s:+", mmc_hostname(host->sdhci->mmc));

	if ((host->card_always_on && is_card_sdio(host->sdhci->mmc->card))||is_card_mmc(host->sdhci->mmc->card)) {
		int ret = 0;

		if (device_may_wakeup(&pdev->dev)) {
		        disable_irq_wake(host->sdhci->irq);
		}

		/* soft reset SD host controller and enable interrupts */
		ret = tegra_sdhci_restore(host->sdhci);
		if (ret) {
			pr_err("%s: failed, error = %d\n", __func__, ret);
			return ret;
		}

		mmiowb();
		host->sdhci->mmc->ops->set_ios(host->sdhci->mmc,
			&host->sdhci->mmc->ios);
		 printk("tegra_sdhci_suspend: skip %s resume(always on)!\n",is_card_mmc(host->sdhci->mmc->card)?"eMMC":"SDIO");
		return 0;
	}

	tegra_sdhci_enable_clock(host, 1);

	pwr = SDHCI_POWER_ON;
	sdhci_writeb(host->sdhci, pwr, SDHCI_POWER_CONTROL);
	host->sdhci->pwr = 0;

	ret = sdhci_resume_host(host->sdhci);
	if (ret)
		pr_err("%s: failed, error = %d\n", __func__, ret);

	MMC_printk("%s:-", mmc_hostname(host->sdhci->mmc));
	return ret;
}
开发者ID:m4ttyw，项目名称:linux_kernel_TF101，代码行数:42，代码来源:sdhci-tegra.c


示例19: tegra_sdhci_restore_interrupts

static void tegra_sdhci_restore_interrupts(struct sdhci_host *sdhost)
{
	u32 ierr;
	u32 clear = SDHCI_INT_ALL_MASK;
	struct tegra_sdhci_host *host = sdhci_priv(sdhost);

	/* enable required interrupts */
	ierr = sdhci_readl(sdhost, SDHCI_INT_ENABLE);
	ierr &= ~clear;
	ierr |= host->sdhci_ints;
	sdhci_writel(sdhost, ierr, SDHCI_INT_ENABLE);
	sdhci_writel(sdhost, ierr, SDHCI_SIGNAL_ENABLE);

	if ((host->sdhci_ints & SDHCI_INT_CARD_INT) &&
		(sdhost->quirks & SDHCI_QUIRK_ENABLE_INTERRUPT_AT_BLOCK_GAP)) {
		u8 gap_ctrl = sdhci_readb(sdhost, SDHCI_BLOCK_GAP_CONTROL);
		gap_ctrl |= 0x8;
		sdhci_writeb(sdhost, gap_ctrl, SDHCI_BLOCK_GAP_CONTROL);
	}
}
开发者ID:Jb2005，项目名称:SamSung-Galaxy-Tab-10.1-Model-GT-P7510，代码行数:20，代码来源:sdhci-tegra.c


示例20: tegra_sdhci_buswidth

static int tegra_sdhci_buswidth(struct sdhci_host *host, int bus_width)
{
	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
	struct sdhci_tegra *tegra_host = pltfm_host->priv;
	u32 ctrl;

	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
	if (tegra_host->is_8bit && bus_width == MMC_BUS_WIDTH_8) {
		ctrl &= ~SDHCI_CTRL_4BITBUS;
		ctrl |= SDHCI_CTRL_8BITBUS;
	} else {
		ctrl &= ~SDHCI_CTRL_8BITBUS;
		if (bus_width == MMC_BUS_WIDTH_4)
			ctrl |= SDHCI_CTRL_4BITBUS;
		else
			ctrl &= ~SDHCI_CTRL_4BITBUS;
	}
	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
	return 0;
}
开发者ID:AiWinters，项目名称:linux，代码行数:20，代码来源:sdhci-tegra.c



注：本文中的sdhci_writeb函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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