[PATCH v1 2/2] scsi: ufs: Select INITIAL ADAPT type for HS Gear4

Can Guo
2020-02-12T05:43:56Z

ADAPT is added specifically for HS Gear4 mode only, select INITIAL ADAPT
before do power mode change to G4 and select NO ADAPT before switch to
non-G4 modes.

Signed-off-by: Can Guo <cang@codeaurora.org>
---
drivers/scsi/ufs/ufs-qcom.c | 14 ++++++++++++++
drivers/scsi/ufs/unipro.h | 7 +++++++
2 files changed, 21 insertions(+)

diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index d593523..6a905bb 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -942,6 +942,20 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
if (!ufshcd_is_hs_mode(&hba->pwr_info) &&
ufshcd_is_hs_mode(dev_req_params))
ufs_qcom_dev_ref_clk_ctrl(host, true);
+
+ if (host->hw_ver.major >= 0x4) {
+ if (dev_req_params->gear_tx == UFS_HS_G4) {
+ /* INITIAL ADAPT */
+ ufshcd_dme_set(hba,
+ UIC_ARG_MIB(PA_TXHSADAPTTYPE),
+ PA_INITIAL_ADAPT);
+ } else {
+ /* NO ADAPT */
+ ufshcd_dme_set(hba,
+ UIC_ARG_MIB(PA_TXHSADAPTTYPE),
+ PA_NO_ADAPT);
+ }
+ }
break;
case POST_CHANGE:
if (ufs_qcom_cfg_timers(hba, dev_req_params->gear_rx,
diff --git a/drivers/scsi/ufs/unipro.h b/drivers/scsi/ufs/unipro.h
index 3dc4d8b..766d551 100644
--- a/drivers/scsi/ufs/unipro.h
+++ b/drivers/scsi/ufs/unipro.h
@@ -146,6 +146,12 @@
#define PA_SLEEPNOCONFIGTIME 0x15A2
#define PA_STALLNOCONFIGTIME 0x15A3
#define PA_SAVECONFIGTIME 0x15A4
+#define PA_TXHSADAPTTYPE 0x15D4
+
+/* Adpat type for PA_TXHSADAPTTYPE attribute */
+#define PA_REFRESH_ADAPT 0x00
+#define PA_INITIAL_ADAPT 0x01
+#define PA_NO_ADAPT 0x03

#define PA_TACTIVATE_TIME_UNIT_US 10
#define PA_HIBERN8_TIME_UNIT_US 100
@@ -203,6 +209,7 @@ enum ufs_hs_gear_tag {
UFS_HS_G1, /* HS Gear 1 (default for reset) */
UFS_HS_G2, /* HS Gear 2 */
UFS_HS_G3, /* HS Gear 3 */
+ UFS_HS_G4, /* HS Gear 4 */
};

enum ufs_unipro_ver {
--
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