[PATCH V3 1/3] scsi: ufs-qcom: Add support for dumping HW and SW hibern8 count

[Manish Pandey <quic_mapa@quicinc.com>]

This patch adds functionality to dump both hardware and software
hibern8 enter counts. This enhancement will aid in monitoring and
debugging hibern8 state transitions by providing detailed count
information.

Signed-off-by: Manish Pandey <quic_mapa@quicinc.com>
---
 drivers/ufs/host/ufs-qcom.c | 9 +++++++++
 drivers/ufs/host/ufs-qcom.h | 9 +++++++++
 2 files changed, 18 insertions(+)

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 1b37449fbffc..f5181773c0e5 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -1573,6 +1573,15 @@ static void ufs_qcom_dump_dbg_regs(struct ufs_hba *hba)
 
 	host = ufshcd_get_variant(hba);
 
+	dev_err(hba->dev, "HW_H8_ENTER_CNT=%d\n", ufshcd_readl(hba, REG_UFS_HW_H8_ENTER_CNT));
+	dev_err(hba->dev, "HW_H8_EXIT_CNT=%d\n", ufshcd_readl(hba, REG_UFS_HW_H8_EXIT_CNT));
+
+	dev_err(hba->dev, "SW_H8_ENTER_CNT=%d\n", ufshcd_readl(hba, REG_UFS_SW_H8_ENTER_CNT));
+	dev_err(hba->dev, "SW_H8_EXIT_CNT=%d\n", ufshcd_readl(hba, REG_UFS_SW_H8_EXIT_CNT));
+
+	dev_err(hba->dev, "SW_AFTER_HW_H8_ENTER_CNT=%d\n",
+			ufshcd_readl(hba, REG_UFS_SW_AFTER_HW_H8_ENTER_CNT));
+
 	ufshcd_dump_regs(hba, REG_UFS_SYS1CLK_1US, 16 * 4,
 			 "HCI Vendor Specific Registers ");
 
diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h
index d0e6ec9128e7..a41db017009f 100644
--- a/drivers/ufs/host/ufs-qcom.h
+++ b/drivers/ufs/host/ufs-qcom.h
@@ -75,6 +75,15 @@ enum {
 	UFS_UFS_DBG_RD_EDTL_RAM			= 0x1900,
 };
 
+/* Vendor-specific Hibern8 count registers for the QCOM UFS host controller. */
+enum {
+	REG_UFS_HW_H8_ENTER_CNT			= 0x2700,
+	REG_UFS_SW_H8_ENTER_CNT			= 0x2704,
+	REG_UFS_SW_AFTER_HW_H8_ENTER_CNT	= 0x2708,
+	REG_UFS_HW_H8_EXIT_CNT			= 0x270C,
+	REG_UFS_SW_H8_EXIT_CNT			= 0x2710,
+};
+
 enum {
 	UFS_MEM_CQIS_VS		= 0x8,
 };
-- 
2.17.1