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scsi: ufshcd-pci: Add Intel CNL support

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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>
This commit is contained in:
Adrian Hunter 2017-06-06 14:35:31 +03:00 • committed by Martin K. Petersen
parent 7b57338eca
commit 2c87ea97ce
1 changed files with 38 additions and 0 deletions
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38
drivers/scsi/ufs/ufshcd-pci.c
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@ -37,6 +37,41 @@
#include <linux/pci.h> #include <linux/pci.h>
#include <linux/pm_runtime.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 #ifdef CONFIG_PM_SLEEP
/** /**
* ufshcd_pci_suspend - suspend power management function * 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; return err;
} }
hba->vops = (struct ufs_hba_variant_ops *)id->driver_data;
err = ufshcd_init(hba, mmio_base, pdev->irq); err = ufshcd_init(hba, mmio_base, pdev->irq);
if (err) { if (err) {
dev_err(&pdev->dev, "Initialization failed\n"); 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[] = { static const struct pci_device_id ufshcd_pci_tbl[] = {
{ PCI_VENDOR_ID_SAMSUNG, 0xC00C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { 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 */ { } /* terminate list */
}; };