diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 5 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 10 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshci.h | 5 |
3 files changed, 18 insertions, 2 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 014f1c0f843a..b0ade73f8c6a 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -271,6 +271,11 @@ static inline u32 ufshcd_get_intr_mask(struct ufs_hba *hba) */ static inline u32 ufshcd_get_ufs_version(struct ufs_hba *hba) { + if (hba->quirks & UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION) { + if (hba->vops && hba->vops->get_ufs_hci_version) + return hba->vops->get_ufs_hci_version(hba); + } + return ufshcd_readl(hba, REG_UFS_VERSION); } diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index eb6831db1548..c40a0e78a6c4 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -246,6 +246,7 @@ struct ufs_pwr_mode_info { * @name: variant name * @init: called when the driver is initialized * @exit: called to cleanup everything done in init + * @get_ufs_hci_version: called to get UFS HCI version * @clk_scale_notify: notifies that clks are scaled up/down * @setup_clocks: called before touching any of the controller registers * @setup_regulators: called before accessing the host controller @@ -263,6 +264,7 @@ struct ufs_hba_variant_ops { const char *name; int (*init)(struct ufs_hba *); void (*exit)(struct ufs_hba *); + u32 (*get_ufs_hci_version)(struct ufs_hba *); void (*clk_scale_notify)(struct ufs_hba *); int (*setup_clocks)(struct ufs_hba *, bool); int (*setup_regulators)(struct ufs_hba *, bool); @@ -449,6 +451,14 @@ struct ufs_hba { */ #define UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE UFS_BIT(4) + /* + * This quirk needs to be enabled if the host contoller doesn't + * advertise the correct version in UFS_VER register. If this quirk + * is enabled, standard UFS host driver will call the vendor specific + * ops (get_ufs_hci_version) to get the correct version. + */ + #define UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION UFS_BIT(5) + unsigned int quirks; /* Deviations from standard UFSHCI spec. */ wait_queue_head_t tm_wq; diff --git a/drivers/scsi/ufs/ufshci.h b/drivers/scsi/ufs/ufshci.h index f8909ece2171..0ae0967aaed8 100644 --- a/drivers/scsi/ufs/ufshci.h +++ b/drivers/scsi/ufs/ufshci.h @@ -89,8 +89,9 @@ enum { /* Controller UFSHCI version */ enum { - UFSHCI_VERSION_10 = 0x00010000, - UFSHCI_VERSION_11 = 0x00010100, + UFSHCI_VERSION_10 = 0x00010000, /* 1.0 */ + UFSHCI_VERSION_11 = 0x00010100, /* 1.1 */ + UFSHCI_VERSION_20 = 0x00000200, /* 2.0 */ }; /* |