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scsi: ufs: mediatek: Add UFS_MTK_CAP_DISABLE_MCQ

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Add new mediatek host cap UFS_MTK_CAP_DISABLE_MCQ to allow disabling MCQ
feature by assigning dts boolean property "mediatek,ufs-disable-mcq".

Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Acked-by: Chun-Hung Wu <Chun-Hung.Wu@mediatek.com>
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/20240315083448.7185-4-peter.wang@mediatek.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Po-Wen Kao 2024-03-15 16:34:44 +08:00 committed by Martin K. Petersen
parent e7b3c64a2a
commit 46bd3e31d7
2 changed files with 13 additions and 0 deletions
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12
drivers/ufs/host/ufs-mediatek.c
View File

@ -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;
}

1
drivers/ufs/host/ufs-mediatek.h
View File

@ -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 {