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scsi: ufs: disable LCC configuration

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LCC configuration that is needed for optical connections, is not needed
when working with UFS devices. This values can be disable in all tx
connected lanes and in both: unipro and the device

Change-Id: I3c94600dad0aaade87eb976b6296a284d10aff93
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
[subhashj@codeaurora.org: resolved trivial merge conflicts]
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
This commit is contained in:
Yaniv Gardi 2013-10-25 00:53:06 +03:00 • committed by David Keitel
parent 1458023d1e
commit e6aa6d8e5a
1 changed files with 24 additions and 2 deletions
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26
drivers/scsi/ufs/ufshcd.c
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@ -2864,8 +2864,30 @@ static int ufshcd_link_startup(struct ufs_hba *hba)
/* failed to get the link up... retire */
goto out;
} else {
ufshcd_dme_set(hba, UIC_ARG_MIB(TX_LCC_ENABLE), 0);
ufshcd_dme_set(hba, UIC_ARG_MIB(TX_LCC_ENABLE), 1);
int device_tx_lanes;
int hc_tx_lanes;
int i;
ufshcd_dme_get(hba,
UIC_ARG_MIB(PA_CONNECTEDTXDATALANES), &hc_tx_lanes);
ufshcd_dme_peer_get(hba,
UIC_ARG_MIB(PA_CONNECTEDTXDATALANES),
&device_tx_lanes);
for (i = 0; i < hc_tx_lanes; ++i)
ufshcd_dme_set(hba,
UIC_ARG_MIB_SEL(TX_LCC_ENABLE, i), 0);
for (i = 0; i < device_tx_lanes; ++i)
ufshcd_dme_peer_st_set(hba,
UIC_ARG_MIB_SEL(TX_LCC_ENABLE, i), 0);
/*
* some devices might need a power mode change to apply
* the above values
*/
ufshcd_uic_change_pwr_mode(hba, UNCHANGED << 4 | UNCHANGED);
}
if (hba->quirks & UFSHCD_QUIRK_BROKEN_LCC) {