scsi: ufshcd-pci: Add Intel CNL support (2c87ea97) · Commits · 戴 / test

drivers/scsi/ufs/ufshcd-pci.c

+38 −0

Original line number	Diff line number	Diff line
		@@ -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 */
		};