コード例 #1
0
int mmc_attach_sd(struct mmc_host *host, u32 ocr)
{
	int err;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
	int retries;
#endif

	BUG_ON(!host);
	WARN_ON(!host->claimed);

	mmc_sd_attach_bus_ops(host);

	
	if (mmc_host_is_spi(host)) {
		mmc_go_idle(host);

		err = mmc_spi_read_ocr(host, 0, &ocr);
		if (err)
			goto err;
	}

	
	if (ocr & 0x7F) {
		printk(KERN_WARNING "%s: card claims to support voltages "
		       "below the defined range. These will be ignored.\n",
		       mmc_hostname(host));
		ocr &= ~0x7F;
	}

	if (ocr & MMC_VDD_165_195) {
		printk(KERN_WARNING "%s: SD card claims to support the "
		       "incompletely defined 'low voltage range'. This "
		       "will be ignored.\n", mmc_hostname(host));
		ocr &= ~MMC_VDD_165_195;
	}

	host->ocr = mmc_select_voltage(host, ocr);

	
	if (!host->ocr) {
		err = -EINVAL;
		goto err;
	}

	
#ifdef CONFIG_MMC_PARANOID_SD_INIT
	retries = 5;
	while (retries) {
		err = mmc_sd_init_card(host, host->ocr, NULL);
		if (err) {
			retries--;
			continue;
		}
		break;
	}

	if (!retries) {
		printk(KERN_ERR "%s: mmc_sd_init_card() failure (err = %d)\n",
		       mmc_hostname(host), err);
		goto err;
	}
#else
	err = mmc_sd_init_card(host, host->ocr, NULL);
	if (err)
		goto err;
#endif

	mmc_release_host(host);

	err = mmc_add_card(host->card);
	if (err)
		goto remove_card;

	return 0;

remove_card:
	mmc_remove_card(host->card);
	host->card = NULL;
	mmc_claim_host(host);
err:
	mmc_detach_bus(host);
	mmc_release_host(host);

	printk(KERN_ERR "%s: error %d whilst initialising SD card\n",
		mmc_hostname(host), err);

	return err;
}
コード例 #2
0
/*
 * Starting point for SD card init.
 */
int mmc_attach_sd(struct mmc_host *host)
{
	int err;
	u32 ocr;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
	int retries;
#endif

	BUG_ON(!host);
	WARN_ON(!host->claimed);

	/* Make sure we are at 3.3V signalling voltage */
	err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330);
	if (err)
		return err;

	err = mmc_send_app_op_cond(host, 0, &ocr);
	if (err)
		return err;

	mmc_sd_attach_bus_ops(host);
	if (host->ocr_avail_sd)
		host->ocr_avail = host->ocr_avail_sd;

	/*
	 * We need to get OCR a different way for SPI.
	 */
	if (mmc_host_is_spi(host)) {
		mmc_go_idle(host);

		err = mmc_spi_read_ocr(host, 0, &ocr);
		if (err)
			goto err;
	}

	/*
	 * Sanity check the voltages that the card claims to
	 * support.
	 */
	if (ocr & 0x7F) {
		printk(KERN_WARNING "%s: card claims to support voltages "
		       "below the defined range. These will be ignored.\n",
		       mmc_hostname(host));
		ocr &= ~0x7F;
	}

	if ((ocr & MMC_VDD_165_195) &&
	    !(host->ocr_avail_sd & MMC_VDD_165_195)) {
		printk(KERN_WARNING "%s: SD card claims to support the "
		       "incompletely defined 'low voltage range'. This "
		       "will be ignored.\n", mmc_hostname(host));
		ocr &= ~MMC_VDD_165_195;
	}

	host->ocr = mmc_select_voltage(host, ocr);

	/*
	 * Can we support the voltage(s) of the card(s)?
	 */
	if (!host->ocr) {
		err = -EINVAL;
		goto err;
	}

	/*
	 * Detect and init the card.
	 */
#ifdef CONFIG_MMC_PARANOID_SD_INIT
	retries = 5;
	while (retries) {
		err = mmc_sd_init_card(host, host->ocr, NULL);
		if (err) {
			retries--;
			continue;
		}
		break;
	}

	if (!retries) {
		printk(KERN_ERR "%s: mmc_sd_init_card() failure (err = %d)\n",
		       mmc_hostname(host), err);
		goto err;
	}
#else
	err = mmc_sd_init_card(host, host->ocr, NULL);
	if (err)
		goto err;
#endif

	mmc_release_host(host);
	err = mmc_add_card(host->card);
	mmc_claim_host(host);
	if (err)
		goto remove_card;

	return 0;

remove_card:
	mmc_release_host(host);
	mmc_remove_card(host->card);
	host->card = NULL;
	mmc_claim_host(host);
err:
	mmc_detach_bus(host);

	printk(KERN_ERR "%s: error %d whilst initialising SD card\n",
		mmc_hostname(host), err);

	return err;
}
コード例 #3
0
/*
 * Starting point for SD card init.
 */
int mmc_attach_sd(struct mmc_host *host, u32 ocr)
{
	int err;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
	int retries;
#endif

	BUG_ON(!host);
	WARN_ON(!host->claimed);

	mmc_sd_attach_bus_ops(host);

	/*
	 * We need to get OCR a different way for SPI.
	 */
	if (mmc_host_is_spi(host)) {
		mmc_go_idle(host);

		err = mmc_spi_read_ocr(host, 0, &ocr);
		if (err)
			goto err;
	}

	/*
	 * Sanity check the voltages that the card claims to
	 * support.
	 */
	if (ocr & 0x7F) {
		printk(KERN_WARNING "%s: card claims to support voltages "
		       "below the defined range. These will be ignored.\n",
		       mmc_hostname(host));
		ocr &= ~0x7F;
	}

	if (ocr & MMC_VDD_165_195) {
		printk(KERN_WARNING "%s: SD card claims to support the "
		       "incompletely defined 'low voltage range'. This "
		       "will be ignored.\n", mmc_hostname(host));
		ocr &= ~MMC_VDD_165_195;
	}

	host->ocr = mmc_select_voltage(host, ocr);

	/*
	 * Can we support the voltage(s) of the card(s)?
	 */
	if (!host->ocr) {
		err = -EINVAL;
		goto err;
	}

	/*
	 * Detect and init the card.
	 */
#ifdef CONFIG_MMC_PARANOID_SD_INIT
	retries = 5;
	while (retries) {
		err = mmc_sd_init_card(host, host->ocr, NULL);
		if (err) 
		{
			#if 1
			if (!strcmp(mmc_hostname(host), "mmc2"))
			{
				g_sd_power_dircect_ctrl = 1;
				mmc_power_off(host);
				mdelay(200);
				mmc_power_up(host);
				mmc_select_voltage(host, host->ocr);
				mdelay(10);
				g_sd_power_dircect_ctrl = 0;
				printk("\n(SD initialization) retry count=%d\n",retries);
			}
			#endif
			retries--;
			continue;
		}
		break;
	}

	if (!retries) {
		printk(KERN_ERR "%s: mmc_sd_init_card() failure (err = %d)\n",
		       mmc_hostname(host), err);
		goto err;
	}
#else
	err = mmc_sd_init_card(host, host->ocr, NULL);
	if (err)
		goto err;
#endif

	mmc_release_host(host);

	err = mmc_add_card(host->card);
	if (err)
		goto remove_card;

	return 0;

remove_card:
	mmc_remove_card(host->card);
	host->card = NULL;
	mmc_claim_host(host);
err:
	mmc_detach_bus(host);
	mmc_release_host(host);

	printk(KERN_ERR "%s: error %d whilst initialising SD card\n",
		mmc_hostname(host), err);

	return err;
}
コード例 #4
0
ファイル: sd.c プロジェクト: ANFS/ANFS-kernel
/*
 * Starting point for SD card init.
 */
int mmc_attach_sd(struct mmc_host *host)
{
	int err;
	u32 ocr;

	BUG_ON(!host);
	WARN_ON(!host->claimed);

	err = mmc_send_app_op_cond(host, 0, &ocr);
	if (err)
		return err;

	mmc_sd_attach_bus_ops(host);
	if (host->ocr_avail_sd)
		host->ocr_avail = host->ocr_avail_sd;

	/*
	 * We need to get OCR a different way for SPI.
	 */
	if (mmc_host_is_spi(host)) {
		mmc_go_idle(host);

		err = mmc_spi_read_ocr(host, 0, &ocr);
		if (err)
			goto err;
	}

	/*
	 * Sanity check the voltages that the card claims to
	 * support.
	 */
	if (ocr & 0x7F) {
		printk(KERN_WARNING "%s: card claims to support voltages "
		       "below the defined range. These will be ignored.\n",
		       mmc_hostname(host));
		ocr &= ~0x7F;
	}

	if ((ocr & MMC_VDD_165_195) &&
	    !(host->ocr_avail_sd & MMC_VDD_165_195)) {
		printk(KERN_WARNING "%s: SD card claims to support the "
		       "incompletely defined 'low voltage range'. This "
		       "will be ignored.\n", mmc_hostname(host));
		ocr &= ~MMC_VDD_165_195;
	}

	host->ocr = mmc_select_voltage(host, ocr);

	/*
	 * Can we support the voltage(s) of the card(s)?
	 */
	if (!host->ocr) {
		err = -EINVAL;
		goto err;
	}

	/*
	 * Detect and init the card.
	 */
	err = mmc_sd_init_card(host, host->ocr, NULL);
	if (err)
		goto err;

	mmc_release_host(host);
	err = mmc_add_card(host->card);
	mmc_claim_host(host);
	if (err)
		goto remove_card;

	return 0;

remove_card:
	mmc_release_host(host);
	mmc_remove_card(host->card);
	host->card = NULL;
	mmc_claim_host(host);
err:
	mmc_detach_bus(host);

	printk(KERN_ERR "%s: error %d whilst initialising SD card\n",
		mmc_hostname(host), err);

	return err;
}