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>
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@ -37,6 +37,41 @@
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#include <linux/pci.h>
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#include <linux/pm_runtime.h>
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static int ufs_intel_disable_lcc(struct ufs_hba *hba)
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{
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u32 attr = UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE);
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u32 lcc_enable = 0;
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ufshcd_dme_get(hba, attr, &lcc_enable);
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if (lcc_enable)
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ufshcd_dme_set(hba, attr, 0);
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return 0;
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}
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static int ufs_intel_link_startup_notify(struct ufs_hba *hba,
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enum ufs_notify_change_status status)
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{
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int err = 0;
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switch (status) {
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case PRE_CHANGE:
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err = ufs_intel_disable_lcc(hba);
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break;
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case POST_CHANGE:
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break;
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default:
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break;
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}
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return err;
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}
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static struct ufs_hba_variant_ops ufs_intel_cnl_hba_vops = {
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.name = "intel-pci",
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.link_startup_notify = ufs_intel_link_startup_notify,
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};
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#ifdef CONFIG_PM_SLEEP
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/**
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* ufshcd_pci_suspend - suspend power management function
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@ -139,6 +174,8 @@ ufshcd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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return err;
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}
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hba->vops = (struct ufs_hba_variant_ops *)id->driver_data;
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err = ufshcd_init(hba, mmio_base, pdev->irq);
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if (err) {
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dev_err(&pdev->dev, "Initialization failed\n");
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@ -163,6 +200,7 @@ static const struct dev_pm_ops ufshcd_pci_pm_ops = {
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static const struct pci_device_id ufshcd_pci_tbl[] = {
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{ PCI_VENDOR_ID_SAMSUNG, 0xC00C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ PCI_VDEVICE(INTEL, 0x9DFA), (kernel_ulong_t)&ufs_intel_cnl_hba_vops },
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{ } /* terminate list */
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};
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