diff options
| author | Stanley Chu <stanley.chu@mediatek.com> | 2020-10-29 14:57:48 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-11-11 07:03:18 +0300 |
| commit | bf8fab86ab791cd24572eaf05f23af9b99dad43c (patch) | |
| tree | 3f7363a26c6cb6e63eabc47a4287fac550b3f2a0 /drivers/scsi | |
| parent | ac8c2459091cd0e2bf226278d7b332e81c4c855a (diff) | |
| download | linux-bf8fab86ab791cd24572eaf05f23af9b99dad43c.tar.xz | |
scsi: ufs-mediatek: Support option to disable auto-hibern8
Support an option to allow users to disable auto-hibern8 feature.
Instead, enable hibern8-during-clk-gating feature to keep similar power
consumption.
Link: https://lore.kernel.org/r/20201029115750.24391-5-stanley.chu@mediatek.com
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/ufs/ufs-mediatek.c | 18 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufs-mediatek.h | 1 |
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c index bff613f1d126..478774801196 100644 --- a/drivers/scsi/ufs/ufs-mediatek.c +++ b/drivers/scsi/ufs/ufs-mediatek.c @@ -158,6 +158,7 @@ static int ufs_mtk_hce_enable_notify(struct ufs_hba *hba, enum ufs_notify_change_status status) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); + unsigned long flags; if (status == PRE_CHANGE) { if (host->unipro_lpm) { @@ -169,6 +170,17 @@ static int ufs_mtk_hce_enable_notify(struct ufs_hba *hba, if (hba->caps & UFSHCD_CAP_CRYPTO) ufs_mtk_crypto_enable(hba); + + if (host->caps & UFS_MTK_CAP_DISABLE_AH8) { + spin_lock_irqsave(hba->host->host_lock, flags); + ufshcd_writel(hba, 0, + REG_AUTO_HIBERNATE_IDLE_TIMER); + spin_unlock_irqrestore(hba->host->host_lock, + flags); + + hba->capabilities &= ~MASK_AUTO_HIBERN8_SUPPORT; + hba->ahit = 0; + } } return 0; @@ -496,6 +508,9 @@ static void ufs_mtk_init_host_caps(struct ufs_hba *hba) if (of_property_read_bool(np, "mediatek,ufs-support-va09")) ufs_mtk_init_va09_pwr_ctrl(hba); + if (of_property_read_bool(np, "mediatek,ufs-disable-ah8")) + host->caps |= UFS_MTK_CAP_DISABLE_AH8; + dev_info(hba->dev, "caps: 0x%x", host->caps); } @@ -609,6 +624,9 @@ static int ufs_mtk_init(struct ufs_hba *hba) hba->caps |= UFSHCD_CAP_WB_EN; hba->vps->wb_flush_threshold = UFS_WB_BUF_REMAIN_PERCENT(80); + if (host->caps & UFS_MTK_CAP_DISABLE_AH8) + hba->caps |= UFSHCD_CAP_HIBERN8_WITH_CLK_GATING; + /* * ufshcd_vops_init() is invoked after * ufshcd_setup_clock(true) in ufshcd_hba_init() thus diff --git a/drivers/scsi/ufs/ufs-mediatek.h b/drivers/scsi/ufs/ufs-mediatek.h index 0e76429f69d6..30f45dfce04c 100644 --- a/drivers/scsi/ufs/ufs-mediatek.h +++ b/drivers/scsi/ufs/ufs-mediatek.h @@ -96,6 +96,7 @@ enum { enum ufs_mtk_host_caps { UFS_MTK_CAP_BOOST_CRYPT_ENGINE = 1 << 0, UFS_MTK_CAP_VA09_PWR_CTRL = 1 << 1, + UFS_MTK_CAP_DISABLE_AH8 = 1 << 2, }; struct ufs_mtk_crypt_cfg { |