Commit b406a197 authored by Stanley Chu's avatar Stanley Chu Committed by Martin K. Petersen
Browse files

scsi: ufs-mediatek: add dbg_register_dump implementation 

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: default avatarAlim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: default avatarStanley Chu <stanley.chu@mediatek.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 17c5f65d

drivers/scsi/ufs/ufs-mediatek.c

+16 −0
Original line number Diff line number Diff line
@@ -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,

};

drivers/scsi/ufs/ufs-mediatek.h

+5 −0
Original line number Diff line number Diff line
@@ -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