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| author |   Yaniv Gardi <ygardi@codeaurora.org> | 2015-05-17 18:55:01 +0300 |
|---|---|---|
| committer |   James Bottomley <JBottomley@Odin.com> | 2015-06-02 13:15:47 -0700 |
| commit | c3a2f9ee93cf2d074dbf0234c2ef5dcdbf84a7d0 (patch) | |
| tree | 4b9cf656c87bd731e421bb7b10181186bd211314 /drivers/scsi | |
| parent | scsi: ufs-qcom: enable UFSHCD_QUIRK_BROKEN_LCC (diff) | |
| download | linux-dev-c3a2f9ee93cf2d074dbf0234c2ef5dcdbf84a7d0.tar.xz linux-dev-c3a2f9ee93cf2d074dbf0234c2ef5dcdbf84a7d0.zip | |
scsi: ufs: introduce a broken PA_RXHSUNTERMCAP quirk
The attribute PA_RXHSUNTERMCAP specifies whether or not the
inbound Link supports unterminated line in HS mode. enabling this
attribute to 1 fixes moving to HS gear.
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 11 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 7 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 3e57cca1ef33..a274df98ddf0 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -2258,6 +2258,16 @@ static int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode) struct uic_command uic_cmd = {0}; int ret; + if (hba->quirks & UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP) { + ret = ufshcd_dme_set(hba, + UIC_ARG_MIB_SEL(PA_RXHSUNTERMCAP, 0), 1); + if (ret) { + dev_err(hba->dev, "%s: failed to enable PA_RXHSUNTERMCAP ret %d\n", + __func__, ret); + goto out; + } + } + uic_cmd.command = UIC_CMD_DME_SET; uic_cmd.argument1 = UIC_ARG_MIB(PA_PWRMODE); uic_cmd.argument3 = mode; @@ -2265,6 +2275,7 @@ static int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode) ret = ufshcd_uic_pwr_ctrl(hba, &uic_cmd); ufshcd_release(hba); +out: return ret; } diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index b845f1535f29..8636ec970946 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -435,6 +435,13 @@ struct ufs_hba { */ #define UFSHCD_QUIRK_BROKEN_LCC UFS_BIT(2) + /* + * The attribute PA_RXHSUNTERMCAP specifies whether or not the + * inbound Link supports unterminated line in HS mode. Setting this + * attribute to 1 fixes moving to HS gear. + */ + #define UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP UFS_BIT(3) + unsigned int quirks; /* Deviations from standard UFSHCI spec. */ wait_queue_head_t tm_wq; |