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scsi: ufs: introduce a broken PA_RXHSUNTERMCAP quirk

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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>
This commit is contained in:
Yaniv Gardi 2015-05-17 18:55:01 +03:00 committed by James Bottomley
parent 2f0183781a
commit c3a2f9ee93
2 changed files with 18 additions and 0 deletions
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11
drivers/scsi/ufs/ufshcd.c
View file

@ -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;
}

7
drivers/scsi/ufs/ufshcd.h
View file

@ -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;