From: Adrian Hunter <adrian.hunter@intel.com>
To: Vinayak Holikatti <vinholikatti@gmail.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Christoph Hellwig <hch@infradead.org>,
"James E.J. Bottomley" <jejb@linux.vnet.ibm.com>,
Subhash Jadavani <subhashj@codeaurora.org>,
Santosh Yaragnavi <santosh.sy@samsung.com>
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
Szymon Mielczarek <szymonx.mielczarek@intel.com>,
Michal Potomski <michalx.potomski@intel.com>,
Grzegorz Janca <grzegorz.janca@intel.com>
Subject: [PATCH V4 2/2] scsi: ufshcd-pci: Add Intel CNL support
Date: Tue, 6 Jun 2017 14:35:31 +0300 [thread overview]
Message-ID: <1496748931-17162-3-git-send-email-adrian.hunter@intel.com> (raw)
In-Reply-To: <1496748931-17162-1-git-send-email-adrian.hunter@intel.com>
Add PCI id and variant ops for Intel CNL UFS host controller.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
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
next prev parent reply other threads:[~2017-06-06 11:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-06 11:35 [PATCH V4 0/2] scsi: ufshcd-pci: Add Intel CNL support Adrian Hunter
2017-06-06 11:35 ` [PATCH V4 1/2] scsi: ufshcd-pci: Fix PM config Adrian Hunter
2017-06-07 13:14 ` Christoph Hellwig
2017-06-06 11:35 ` Adrian Hunter [this message]
2017-06-07 13:16 ` [PATCH V4 2/2] scsi: ufshcd-pci: Add Intel CNL support Christoph Hellwig
2017-06-08 9:36 ` Joao Pinto
2017-06-13 1:08 ` [PATCH V4 0/2] " Martin K. Petersen
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