The current way of disabling it is not well tested by vendor and has all kinds of bugs that show up on resume from ram/disk.
Old way of disabling is still supported by continuing to use CONFIG_MMC_RICOH_MMC. Based on 'http://list.drzeus.cx/pipermail/sdhci-devel/2007-December/002085.html' Signed-off-by: Maxim Levitsky <[email protected]> CC: [email protected] CC: [email protected] <[email protected]> --- drivers/mmc/host/sdhci-pci.c | 34 ++++++++++++++++++++++++++++++++++ drivers/mmc/host/sdhci.c | 5 ++++- drivers/mmc/host/sdhci.h | 2 ++ 3 files changed, 40 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index 65483fd..3843780 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -17,6 +17,7 @@ #include <linux/pci.h> #include <linux/dma-mapping.h> #include <linux/slab.h> +#include <linux/device.h> #include <linux/mmc/host.h> @@ -85,6 +86,26 @@ static int ricoh_probe(struct sdhci_pci_chip *chip) chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY) chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET; + /* To disable hardware races against MMC part */ + device_disable_async_suspend(&chip->pci_dev->dev); + return 0; +} + +static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot) +{ + slot->host->caps = + ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT) + & SDHCI_TIMEOUT_CLK_MASK) | + + ((0x21 << SDHCI_CLOCK_BASE_SHIFT) + & SDHCI_CLOCK_BASE_MASK) | + + SDHCI_TIMEOUT_CLK_UNIT | + SDHCI_CAN_VDD_330 | + SDHCI_CAN_DO_SDMA ; + + /* To disable hardware races against SDHC part */ + device_disable_async_suspend(&slot->chip->pci_dev->dev); return 0; } @@ -95,6 +116,11 @@ static const struct sdhci_pci_fixes sdhci_ricoh = { SDHCI_QUIRK_CLOCK_BEFORE_RESET, }; +static const struct sdhci_pci_fixes sdhci_ricoh_mmc = { + .probe_slot = ricoh_mmc_probe_slot, + .quirks = SDHCI_QUIRK_NO_CARD_NO_RESET, +}; + static const struct sdhci_pci_fixes sdhci_ene_712 = { .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | SDHCI_QUIRK_BROKEN_DMA, @@ -374,6 +400,14 @@ static const struct pci_device_id pci_ids[] __devinitdata = { }, { + .vendor = PCI_VENDOR_ID_RICOH, + .device = 0x843, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc, + }, + + { .vendor = PCI_VENDOR_ID_ENE, .device = PCI_DEVICE_ID_ENE_CB712_SD, .subvendor = PCI_ANY_ID, diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index c6d1bd8..dbd9367 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1687,7 +1687,10 @@ int sdhci_add_host(struct sdhci_host *host) host->version); } - caps = sdhci_readl(host, SDHCI_CAPABILITIES); + if (host->caps) + caps = host->caps; + else + caps = sdhci_readl(host, SDHCI_CAPABILITIES); if (host->quirks & SDHCI_QUIRK_FORCE_DMA) host->flags |= SDHCI_USE_SDMA; diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index c846813..b41581a 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -292,6 +292,8 @@ struct sdhci_host { struct timer_list timer; /* Timer for timeouts */ + unsigned int caps; /* Alternative capabilities */ + unsigned long private[0] ____cacheline_aligned; }; -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
