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scsi: ufs-qcom : Add quirk for broken auto hibern8

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Some platforms might not support auto hibern8 even though the
controller exposes this capability. Add a quirk to disable
auto hibern8 for such platforms.

Change-Id: I4a027f89deddff4735df45da9cffbfb1849af5f4
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
This commit is contained in:
Venkat Gopalakrishnan 2016-05-24 12:11:32 -07:00 • committed by Kyle Yan
parent c4fcd60d69
commit 813edfeb4d
2 changed files with 8 additions and 1 deletions
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3
drivers/scsi/ufs/ufs-qcom.c
View file

@ -1355,6 +1355,9 @@ static void ufs_qcom_advertise_quirks(struct ufs_hba *hba)
| UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE
| UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP);
}
if (host->disable_lpm)
hba->quirks |= UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8;
}
static void ufs_qcom_set_caps(struct ufs_hba *hba)

6
drivers/scsi/ufs/ufshcd.h
View file

@ -776,6 +776,9 @@ struct ufs_hba {
*/
#define UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION UFS_BIT(5)
/* Auto hibern8 support is broken */
#define UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8 UFS_BIT(6)
unsigned int quirks; /* Deviations from standard UFSHCI spec. */
/* Device deviations from standard UFS device spec. */
@ -936,7 +939,8 @@ static inline bool ufshcd_is_intr_aggr_allowed(struct ufs_hba *hba)
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_crypto_supported(struct ufs_hba *hba)