| Message ID | 1520604265-4430-3-git-send-email-ernest.zhang@bayhubtech.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 09/03/18 16:04, ernest.zhang wrote: > Add MSI interrupt support if the SD host device can support MSI interrupt. > > Changes: Enable MSI interrupt if the MSI capability bit is set in > capability register. > > Signed-off-by: ernest.zhang <ernest.zhang@bayhubtech.com> > --- > drivers/mmc/host/sdhci-pci-o2micro.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/drivers/mmc/host/sdhci-pci-o2micro.c b/drivers/mmc/host/sdhci-pci-o2micro.c > index a918984..7d04f4b 100644 > --- a/drivers/mmc/host/sdhci-pci-o2micro.c > +++ b/drivers/mmc/host/sdhci-pci-o2micro.c > @@ -391,6 +391,23 @@ int sdhci_pci_o2_probe_slot(struct sdhci_pci_slot *slot) > if (reg & 0x1) > host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12; > > +#if defined(CONFIG_PCI_MSI) Do you really need to check CONFIG_PCI_MSI ? > + if (pci_find_capability(chip->pdev, PCI_CAP_ID_MSI)) { > + ret = pci_enable_msi(chip->pdev); > + if (!ret) { > + host->irq = chip->pdev->irq; > + pr_info("%s: use MSI irq, irq=%d\n", > + mmc_hostname(host->mmc), host->irq); > + } else { > + pr_err("%s: enable PCI MSI failed, err=%d\n", > + mmc_hostname(host->mmc), ret); > + } > + } else { > + pr_info("%s: unsupport msi, use INTx irq\n", > + mmc_hostname(host->mmc)); > + } > +#endif > + > if (chip->pdev->device == PCI_DEVICE_ID_O2_SEABIRD0) { > ret = pci_read_config_dword(chip->pdev, > O2_SD_MISC_SETTING, ®); > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/mmc/host/sdhci-pci-o2micro.c b/drivers/mmc/host/sdhci-pci-o2micro.c index a918984..7d04f4b 100644 --- a/drivers/mmc/host/sdhci-pci-o2micro.c +++ b/drivers/mmc/host/sdhci-pci-o2micro.c @@ -391,6 +391,23 @@ int sdhci_pci_o2_probe_slot(struct sdhci_pci_slot *slot) if (reg & 0x1) host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12; +#if defined(CONFIG_PCI_MSI) + if (pci_find_capability(chip->pdev, PCI_CAP_ID_MSI)) { + ret = pci_enable_msi(chip->pdev); + if (!ret) { + host->irq = chip->pdev->irq; + pr_info("%s: use MSI irq, irq=%d\n", + mmc_hostname(host->mmc), host->irq); + } else { + pr_err("%s: enable PCI MSI failed, err=%d\n", + mmc_hostname(host->mmc), ret); + } + } else { + pr_info("%s: unsupport msi, use INTx irq\n", + mmc_hostname(host->mmc)); + } +#endif + if (chip->pdev->device == PCI_DEVICE_ID_O2_SEABIRD0) { ret = pci_read_config_dword(chip->pdev, O2_SD_MISC_SETTING, ®);
Add MSI interrupt support if the SD host device can support MSI interrupt. Changes: Enable MSI interrupt if the MSI capability bit is set in capability register. Signed-off-by: ernest.zhang <ernest.zhang@bayhubtech.com> --- drivers/mmc/host/sdhci-pci-o2micro.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)