scsi: ufs-mediatek: configure customized auto-hibern8 timer

Configure customized auto-hibern8 timer in MediaTek Chipsets.

Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Bean Huo <beanhuo@micron.com>
Cc: Can Guo <cang@codeaurora.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/r/1577683950-1702-6-git-send-email-stanley.chu@mediatek.com
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index fc5ba21ec02a3e9449f06defeccf60350a0e3422..1f025723b61bd29d95116916c09acf876e518dcc 100644 (file)
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/arm-smccc.h>
+#include <linux/bitfield.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/phy/phy.h>
@@ -305,6 +306,13 @@ static int ufs_mtk_post_link(struct ufs_hba *hba)
        /* enable unipro clock gating feature */
        ufs_mtk_cfg_unipro_cg(hba, true);
 
+       /* configure auto-hibern8 timer to 10ms */
+       if (ufshcd_is_auto_hibern8_supported(hba)) {
+               ufshcd_auto_hibern8_update(hba,
+                       FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, 10) |
+                       FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3));
+       }
+
        return 0;
 }