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authorAdrian Hunter <adrian.hunter@intel.com>2020-08-10 17:10:24 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2020-08-17 22:00:26 -0400
commit8da76f71fef7d8a1a72af09d48899573feb60065 (patch)
tree2641b51afb3a6f2790dc497b8f401343b6669be7 /drivers/scsi/ufs
parent215d326702516366a8dfa9624b67ba0761c22b86 (diff)
downloadlinux-8da76f71fef7d8a1a72af09d48899573feb60065.tar.bz2
scsi: ufs-pci: Add quirk for broken auto-hibernate for Intel EHL
Intel EHL UFS host controller advertises auto-hibernate capability but it does not work correctly. Add a quirk for that. [mkp: checkpatch fix] Link: https://lore.kernel.org/r/20200810141024.28859-1-adrian.hunter@intel.com Fixes: 8c09d7527697 ("scsi: ufshdc-pci: Add Intel PCI IDs for EHL") Acked-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs')
-rw-r--r--drivers/scsi/ufs/ufshcd-pci.c16
-rw-r--r--drivers/scsi/ufs/ufshcd.h9
2 files changed, 22 insertions, 3 deletions
diff --git a/drivers/scsi/ufs/ufshcd-pci.c b/drivers/scsi/ufs/ufshcd-pci.c
index f407b13883ac..5a95a7bfbab0 100644
--- a/drivers/scsi/ufs/ufshcd-pci.c
+++ b/drivers/scsi/ufs/ufshcd-pci.c
@@ -44,11 +44,23 @@ static int ufs_intel_link_startup_notify(struct ufs_hba *hba,
return err;
}
+static int ufs_intel_ehl_init(struct ufs_hba *hba)
+{
+ hba->quirks |= UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8;
+ return 0;
+}
+
static struct ufs_hba_variant_ops ufs_intel_cnl_hba_vops = {
.name = "intel-pci",
.link_startup_notify = ufs_intel_link_startup_notify,
};
+static struct ufs_hba_variant_ops ufs_intel_ehl_hba_vops = {
+ .name = "intel-pci",
+ .init = ufs_intel_ehl_init,
+ .link_startup_notify = ufs_intel_link_startup_notify,
+};
+
#ifdef CONFIG_PM_SLEEP
/**
* ufshcd_pci_suspend - suspend power management function
@@ -177,8 +189,8 @@ 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 },
- { PCI_VDEVICE(INTEL, 0x4B41), (kernel_ulong_t)&ufs_intel_cnl_hba_vops },
- { PCI_VDEVICE(INTEL, 0x4B43), (kernel_ulong_t)&ufs_intel_cnl_hba_vops },
+ { PCI_VDEVICE(INTEL, 0x4B41), (kernel_ulong_t)&ufs_intel_ehl_hba_vops },
+ { PCI_VDEVICE(INTEL, 0x4B43), (kernel_ulong_t)&ufs_intel_ehl_hba_vops },
{ } /* terminate list */
};
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index b2ef18f1b746..363589c0bd37 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -520,6 +520,12 @@ enum ufshcd_quirks {
* OCS FATAL ERROR with device error through sense data
*/
UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR = 1 << 10,
+
+ /*
+ * This quirk needs to be enabled if the host controller has
+ * auto-hibernate capability but it doesn't work.
+ */
+ UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8 = 1 << 11,
};
enum ufshcd_caps {
@@ -803,7 +809,8 @@ return true;
static inline bool ufshcd_is_auto_hibern8_supported(struct ufs_hba *hba)
{
- return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT);
+ return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT) &&
+ !(hba->quirks & UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8);
}
static inline bool ufshcd_is_auto_hibern8_enabled(struct ufs_hba *hba)