From fb5d9ede79f33e6196622b5d668c793b3c8a8022 Mon Sep 17 00:00:00 2001
From: Anirudh Ghayal <aghayal@codeaurora.org>
Date: Fri, 19 Jun 2020 16:21:17 +0530
Subject: [PATCH] power: qpnp-qg: Add the SDAM flash-ocv offset

On PM2250 the PBS sequence expects the battery-OCV
to output the right flash-boost output voltage. Provide
the same in a SDAM offset.

Change-Id: I9d43375d96de5a199c6a87c55e5c1079549b23ee
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
---
 drivers/power/supply/qcom/qg-reg.h  | 1 +
 drivers/power/supply/qcom/qg-sdam.c | 5 +++++
 drivers/power/supply/qcom/qg-sdam.h | 1 +
 drivers/power/supply/qcom/qpnp-qg.c | 7 +++++++
 4 files changed, 14 insertions(+)

diff --git a/drivers/power/supply/qcom/qg-reg.h b/drivers/power/supply/qcom/qg-reg.h
index 647ee60ee29e..111ad3ad5c3e 100644
--- a/drivers/power/supply/qcom/qg-reg.h
+++ b/drivers/power/supply/qcom/qg-reg.h
@@ -128,6 +128,7 @@
 #define QG_SDAM_ESR_DISCHARGE_SF_OFFSET		0x74 /* 2-byte 0x74-0x75 */
 #define QG_SDAM_BATT_AGE_LEVEL_OFFSET		0x76 /* 1-byte 0x76 */
 #define QG_SDAM_MAGIC_OFFSET			0x80 /* 4-byte 0x80-0x83 */
+#define QG_SDAM_FLASH_OCV_OFFSET		0x84 /* 1-byte 0x84 */
 #define QG_SDAM_MAX_OFFSET			0xA4
 
 /* Below offset is used by PBS */
diff --git a/drivers/power/supply/qcom/qg-sdam.c b/drivers/power/supply/qcom/qg-sdam.c
index 95b5aea539ed..a2c932272108 100644
--- a/drivers/power/supply/qcom/qg-sdam.c
+++ b/drivers/power/supply/qcom/qg-sdam.c
@@ -91,6 +91,11 @@ static struct qg_sdam_info sdam_info[] = {
 		.offset = QG_SDAM_MAGIC_OFFSET,
 		.length = 4,
 	},
+	[SDAM_FLASH_OCV] = {
+		.name	= "SDAM_FLASH_OCV_OFFSET",
+		.offset = QG_SDAM_FLASH_OCV_OFFSET,
+		.length = 1,
+	},
 };
 
 int qg_sdam_write(u8 param, u32 data)
diff --git a/drivers/power/supply/qcom/qg-sdam.h b/drivers/power/supply/qcom/qg-sdam.h
index dea1fc5e96cd..eb58f15d9f1d 100644
--- a/drivers/power/supply/qcom/qg-sdam.h
+++ b/drivers/power/supply/qcom/qg-sdam.h
@@ -25,6 +25,7 @@ enum qg_sdam_param {
 	SDAM_ESR_DISCHARGE_SF,
 	SDAM_MAGIC,
 	SDAM_BATT_AGE_LEVEL,
+	SDAM_FLASH_OCV,
 	SDAM_MAX,
 };
 
diff --git a/drivers/power/supply/qcom/qpnp-qg.c b/drivers/power/supply/qcom/qpnp-qg.c
index 8aae7aba5698..ebb2e38a7009 100644
--- a/drivers/power/supply/qcom/qpnp-qg.c
+++ b/drivers/power/supply/qcom/qpnp-qg.c
@@ -321,6 +321,7 @@ static int qg_store_soc_params(struct qpnp_qg *chip)
 {
 	int rc, batt_temp = 0, i;
 	unsigned long rtc_sec = 0;
+	u32 flash_ocv = 0;
 
 	rc = get_rtc_time(&rtc_sec);
 	if (rc < 0)
@@ -340,6 +341,12 @@ static int qg_store_soc_params(struct qpnp_qg *chip)
 					i, chip->sdam_data[i]);
 	}
 
+	/* store the SDAM OCV */
+	flash_ocv = chip->sdam_data[SDAM_OCV_UV] / 20000;
+	rc = qg_sdam_write(SDAM_FLASH_OCV, flash_ocv);
+	if (rc < 0)
+		pr_err("Failed to update flash-ocv rc=%d\n", rc);
+
 	return rc;
 }