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Commit c3a2f9ee authored by Yaniv Gardi's avatar Yaniv Gardi Committed by James Bottomley
Browse files

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: default avatarYaniv Gardi <ygardi@codeaurora.org>
Reviewed-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Odin.com>
parent 2f018378

drivers/scsi/ufs/ufshcd.c

+11 −0
Original line number Diff line number Diff line
@@ -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;

}

drivers/scsi/ufs/ufshcd.h

+7 −0
Original line number Diff line number Diff line
@@ -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;