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| author |   Stanley Chu <stanley.chu@mediatek.com> | 2020-01-17 11:51:06 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2020-01-20 19:09:57 -0500 |
| commit | b406a1978376b40f6737d5cc37bbb836b4428963 (patch) | |
| tree | d6a56e7b3e2b6e91764ff751b73a2eddba12e4ad /drivers/scsi | |
| parent | scsi: qla2xxx: Fix a NULL pointer dereference in an error path (diff) | |
| download | linux-dev-b406a1978376b40f6737d5cc37bbb836b4428963.tar.xz linux-dev-b406a1978376b40f6737d5cc37bbb836b4428963.zip | |
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: 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>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/ufs/ufs-mediatek.c | 16 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufs-mediatek.h | 5 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c index 8d999c0e60fe..d5194d0c4ef5 100644 --- a/drivers/scsi/ufs/ufs-mediatek.c +++ b/drivers/scsi/ufs/ufs-mediatek.c @@ -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, }; diff --git a/drivers/scsi/ufs/ufs-mediatek.h b/drivers/scsi/ufs/ufs-mediatek.h index 31b7fead19eb..fccdd979d6fb 100644 --- a/drivers/scsi/ufs/ufs-mediatek.h +++ b/drivers/scsi/ufs/ufs-mediatek.h @@ -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 |