On Sun, 2010-06-06 at 19:11 -0400, Philip Langdale wrote: > On Mon, 7 Jun 2010 00:28:50 +0300, Maxim Levitsky > <maximlevitsky@xxxxxxxxx> wrote: > > 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' > > Most of the credit for this goes to Andrew de Quincey > > > > > > Signed-off-by: Maxim Levitsky <maximlevitsky@xxxxxxxxx> > > CC: Andrew de Quincey <adq_dvb@xxxxxxxxxxxxx> > > CC: linux-mmc@xxxxxxxxxxxxxxx <linux-mmc@xxxxxxxxxxxxxxx> > > ACK with one change to add a #define for the device ID. I am not sure about this. When I submitted a driver for xD part I was told that unless device is shared by several pieces of code, its not ok to add it to pci_ids.c. The device is I was told can be hardcoded in the driver. Nothing against changing it. > > > --- > > drivers/mmc/host/sdhci-pci.c | 31 +++++++++++++++++++++++++++++++ > > drivers/mmc/host/sdhci.c | 3 ++- > > drivers/mmc/host/sdhci.h | 4 ++++ > > 3 files changed, 37 insertions(+), 1 deletions(-) > > > > diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c > > index 65483fd..c4bcaeb 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> > > > > @@ -84,7 +85,21 @@ static int ricoh_probe(struct sdhci_pci_chip *chip) > > if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG || > > chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY) > > chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET; > > + 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; > > return 0; > > } > > As we discussed, highspeed works. Of course, sdhci never sets the MMC > highspeed flag so the cap is irrelevant. We'd need another quirk to > indicate highspeed MMC is supported. > > This can be done in a separate patch. Sure, but maybe we can enable this for SD/SDHC too? > > > @@ -95,6 +110,14 @@ 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_32BIT_DMA_ADDR | > > + SDHCI_QUIRK_CLOCK_BEFORE_RESET | > > + SDHCI_QUIRK_NO_CARD_NO_RESET | > > + SDHCI_QUIRK_MISSING_CAPS > > +}; > > + > > static const struct sdhci_pci_fixes sdhci_ene_712 = { > > .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | > > SDHCI_QUIRK_BROKEN_DMA, > > @@ -374,6 +397,14 @@ 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, > > + }, > > + > > + { > > It seems we generally want to add a #define for the device ID. > The ENE device below has one. > > > .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..483b78e 100644 > > --- a/drivers/mmc/host/sdhci.c > > +++ b/drivers/mmc/host/sdhci.c > > @@ -1687,7 +1687,8 @@ int sdhci_add_host(struct sdhci_host *host) > > host->version); > > } > > > > - caps = sdhci_readl(host, SDHCI_CAPABILITIES); > > + caps = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->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..b1839a3 100644 > > --- a/drivers/mmc/host/sdhci.h > > +++ b/drivers/mmc/host/sdhci.h > > @@ -240,6 +240,8 @@ struct sdhci_host { > > #define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN (1<<25) > > /* Controller cannot support End Attribute in NOP ADMA descriptor */ > > #define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<26) > > +/* Controller is missing device caps. Use caps provided by host */ > > +#define SDHCI_QUIRK_MISSING_CAPS (1<<27) > > > > int irq; /* Device IRQ */ > > void __iomem * ioaddr; /* Mapped address */ > > @@ -292,6 +294,8 @@ struct sdhci_host { > > > > struct timer_list timer; /* Timer for timeouts */ > > > > + unsigned int caps; /* Alternative capabilities */ > > + > > unsigned long private[0] ____cacheline_aligned; > > }; > > --phil Best regards, Maxim Levitsky -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
