diff options
Diffstat (limited to 'drivers/ufs')
| -rw-r--r-- | drivers/ufs/host/ufs-mediatek.c | 12 | ||||
| -rw-r--r-- | drivers/ufs/host/ufs-mediatek.h | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index 59ca5d937bb6..7c593ef7e143 100644 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -639,6 +639,9 @@ static void ufs_mtk_init_host_caps(struct ufs_hba *hba) if (of_property_read_bool(np, "mediatek,ufs-tx-skew-fix")) host->caps |= UFS_MTK_CAP_TX_SKEW_FIX; + if (of_property_read_bool(np, "mediatek,ufs-disable-mcq")) + host->caps |= UFS_MTK_CAP_DISABLE_MCQ; + dev_info(hba->dev, "caps: 0x%x", host->caps); } @@ -902,6 +905,9 @@ static void ufs_mtk_init_mcq_irq(struct ufs_hba *hba) host->mcq_nr_intr = UFSHCD_MAX_Q_NR; pdev = container_of(hba->dev, struct platform_device, dev); + if (host->caps & UFS_MTK_CAP_DISABLE_MCQ) + goto failed; + for (i = 0; i < host->mcq_nr_intr; i++) { /* irq index 0 is legacy irq, sq/cq irq start from index 1 */ irq = platform_get_irq(pdev, i + 1); @@ -1617,6 +1623,12 @@ static int ufs_mtk_clk_scale_notify(struct ufs_hba *hba, bool scale_up, static int ufs_mtk_get_hba_mac(struct ufs_hba *hba) { + struct ufs_mtk_host *host = ufshcd_get_variant(hba); + + /* MCQ operation not permitted */ + if (host->caps & UFS_MTK_CAP_DISABLE_MCQ) + return -EPERM; + return MAX_SUPP_MAC; } diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h index d5a92810386f..773e778bbc1d 100644 --- a/drivers/ufs/host/ufs-mediatek.h +++ b/drivers/ufs/host/ufs-mediatek.h @@ -143,6 +143,7 @@ enum ufs_mtk_host_caps { UFS_MTK_CAP_ALLOW_VCCQX_LPM = 1 << 5, UFS_MTK_CAP_PMC_VIA_FASTAUTO = 1 << 6, UFS_MTK_CAP_TX_SKEW_FIX = 1 << 7, + UFS_MTK_CAP_DISABLE_MCQ = 1 << 8, }; struct ufs_mtk_crypt_cfg { |