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scsi: ufs-mediatek: add dbg_register_dump implementation

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Add dbg_register_dump variant vendor implementation in MediaTek UFS driver.

Link: https://lore.kernel.org/r/20200117035108.19699-2-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>
This commit is contained in:
Stanley Chu 2020-01-17 11:51:06 +08:00 committed by Martin K. Petersen
parent 17c5f65db6
commit b406a19783
2 changed files with 21 additions and 0 deletions
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16
drivers/scsi/ufs/ufs-mediatek.c
View File

@ -406,6 +406,21 @@ static int ufs_mtk_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
return 0;
}
static void ufs_mtk_dbg_register_dump(struct ufs_hba *hba)
{
ufshcd_dump_regs(hba, REG_UFS_REFCLK_CTRL, 0x4, "Ref-Clk Ctrl ");
ufshcd_dump_regs(hba, REG_UFS_EXTREG, 0x4, "Ext Reg ");
ufshcd_dump_regs(hba, REG_UFS_MPHYCTRL,
REG_UFS_REJECT_MON - REG_UFS_MPHYCTRL + 4,
"MPHY Ctrl ");
/* Direct debugging information to REG_MTK_PROBE */
ufshcd_writel(hba, 0x20, REG_UFS_DEBUG_SEL);
ufshcd_dump_regs(hba, REG_UFS_PROBE, 0x4, "Debug Probe ");
}
static int ufs_mtk_apply_dev_quirks(struct ufs_hba *hba,
struct ufs_dev_desc *card)
{
@ -430,6 +445,7 @@ static struct ufs_hba_variant_ops ufs_hba_mtk_vops = {
.apply_dev_quirks = ufs_mtk_apply_dev_quirks,
.suspend = ufs_mtk_suspend,
.resume = ufs_mtk_resume,
.dbg_register_dump = ufs_mtk_dbg_register_dump,
.device_reset = ufs_mtk_device_reset,
};

5
drivers/scsi/ufs/ufs-mediatek.h
View File

@ -13,6 +13,11 @@
* Vendor specific UFSHCI Registers
*/
#define REG_UFS_REFCLK_CTRL 0x144
#define REG_UFS_EXTREG 0x2100
#define REG_UFS_MPHYCTRL 0x2200
#define REG_UFS_REJECT_MON 0x22AC
#define REG_UFS_DEBUG_SEL 0x22C0
#define REG_UFS_PROBE 0x22C8
/*
* Ref-clk control