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| author |   Adrian Hunter <adrian.hunter@intel.com> | 2017-06-06 14:35:31 +0300 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2017-06-12 21:08:26 -0400 |
| commit | 2c87ea97ce6a53fc8c98a796b34fed5b84aeff6b (patch) | |
| tree | 2ec153d07cc05a66474467f2529262685cebe62a /drivers/scsi/ufs | |
| parent | scsi: ufshcd-pci: Fix PM config (diff) | |
| download | linux-dev-2c87ea97ce6a53fc8c98a796b34fed5b84aeff6b.tar.xz linux-dev-2c87ea97ce6a53fc8c98a796b34fed5b84aeff6b.zip | |
scsi: ufshcd-pci: Add Intel CNL support
Add PCI id and variant ops for Intel CNL UFS host controller.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd-pci.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd-pci.c b/drivers/scsi/ufs/ufshcd-pci.c index 0dcff829f8b6..925b0ec7ec54 100644 --- a/drivers/scsi/ufs/ufshcd-pci.c +++ b/drivers/scsi/ufs/ufshcd-pci.c @@ -37,6 +37,41 @@ #include <linux/pci.h> #include <linux/pm_runtime.h> +static int ufs_intel_disable_lcc(struct ufs_hba *hba) +{ + u32 attr = UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE); + u32 lcc_enable = 0; + + ufshcd_dme_get(hba, attr, &lcc_enable); + if (lcc_enable) + ufshcd_dme_set(hba, attr, 0); + + return 0; +} + +static int ufs_intel_link_startup_notify(struct ufs_hba *hba, + enum ufs_notify_change_status status) +{ + int err = 0; + + switch (status) { + case PRE_CHANGE: + err = ufs_intel_disable_lcc(hba); + break; + case POST_CHANGE: + break; + default: + break; + } + + return err; +} + +static struct ufs_hba_variant_ops ufs_intel_cnl_hba_vops = { + .name = "intel-pci", + .link_startup_notify = ufs_intel_link_startup_notify, +}; + #ifdef CONFIG_PM_SLEEP /** * ufshcd_pci_suspend - suspend power management function @@ -139,6 +174,8 @@ ufshcd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) return err; } + hba->vops = (struct ufs_hba_variant_ops *)id->driver_data; + err = ufshcd_init(hba, mmio_base, pdev->irq); if (err) { dev_err(&pdev->dev, "Initialization failed\n"); @@ -163,6 +200,7 @@ static const struct dev_pm_ops ufshcd_pci_pm_ops = { static const struct pci_device_id ufshcd_pci_tbl[] = { { PCI_VENDOR_ID_SAMSUNG, 0xC00C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, + { PCI_VDEVICE(INTEL, 0x9DFA), (kernel_ulong_t)&ufs_intel_cnl_hba_vops }, { } /* terminate list */ }; |