Add PCI id and variant ops for Intel CNL UFS host controller.
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
---
drivers/scsi/ufs/ufshcd-pci.c | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
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 @@ static void ufshcd_pci_remove(struct pci_dev *pdev)
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 void ufshcd_pci_remove(struct pci_dev *pdev)
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 */
};
--
1.9.1
