On Fri, 2024-03-08 at 15:02 +0800, peter.wang@xxxxxxxxxxxx wrote:
> From: Peter Wang <peter.wang@xxxxxxxxxxxx>
>
> From: Po-Wen Kao <powen.kao@xxxxxxxxxxxx>
>
> Add new mediatek host cap UFS_MTK_CAP_DISABLE_MCQ to allow disable
> MCQ feature by assigning dts boolean property
> "mediatek,ufs-disable-mcq""
>
> Reviewed-by: Peter Wang <peter.wang@xxxxxxxxxxxx>
> Signed-off-by: Peter Wang <peter.wang@xxxxxxxxxxxx>
> Signed-off-by: Po-Wen Kao <powen.kao@xxxxxxxxxxxx>
> ---
> drivers/ufs/host/ufs-mediatek.c | 12 ++++++++++++
> drivers/ufs/host/ufs-mediatek.h | 1 +
> 2 files changed, 13 insertions(+)
>
> diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-
> mediatek.c
> index 0262e8994236..cdf29cfa490b 100644
> --- a/drivers/ufs/host/ufs-mediatek.c
> +++ b/drivers/ufs/host/ufs-mediatek.c
> @@ -640,6 +640,9 @@ 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);
> }
>
> @@ -874,6 +877,9 @@ 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);
> @@ -1585,6 +1591,12 @@ 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 146c25080599..79c64de25254 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 {
Acked-by: Chun-Hung Wu <Chun-Hung.Wu@xxxxxxxxxxxx>
