From 2480c73944b4f7e9d25a37b4f3df90981d59c4d1 Mon Sep 17 00:00:00 2001
From: Nicholas Troast <ntroast@codeaurora.org>
Date: Thu, 12 May 2016 17:56:35 -0700
Subject: [PATCH] qcom-charger: smb-lib: add get charge param and usb suspend

The parallel charger does not use voting, therefore register getter and
setter functions need to be created or exposed.

CRs-Fixed: 1023141
Change-Id: I96a4877196be78c0eeecc3fc08419e8990572aaa
Signed-off-by: Nicholas Troast <ntroast@codeaurora.org>
---
 drivers/power/qcom-charger/smb-lib.c | 43 +++++++++++++++++++++++++---
 drivers/power/qcom-charger/smb-lib.h |  8 ++++++
 2 files changed, 47 insertions(+), 4 deletions(-)

diff --git a/drivers/power/qcom-charger/smb-lib.c b/drivers/power/qcom-charger/smb-lib.c
index aea697417bda..83d7f5b0ab0e 100644
--- a/drivers/power/qcom-charger/smb-lib.c
+++ b/drivers/power/qcom-charger/smb-lib.c
@@ -86,6 +86,41 @@ unlock:
  * REGISTER GETTERS *
  ********************/
 
+int smblib_get_charge_param(struct smb_charger *chg,
+			    struct smb_chg_param *param, int *val_u)
+{
+	int rc = 0;
+	u8 val_raw;
+
+	rc = smblib_read(chg, param->reg, &val_raw);
+	if (rc < 0) {
+		dev_err(chg->dev, "%s: Couldn't read from 0x%04x rc=%d\n",
+			param->name, param->reg, rc);
+		return rc;
+	}
+
+	*val_u = val_raw * param->step_u + param->min_u;
+	smblib_dbg(chg, PR_REGISTER, "%s = %d (0x%02x)\n",
+		   param->name, *val_u, val_raw);
+
+	return rc;
+}
+
+int smblib_get_usb_suspend(struct smb_charger *chg, int *suspend)
+{
+	int rc = 0;
+	u8 temp;
+
+	rc = smblib_read(chg, USBIN_CMD_IL_REG, &temp);
+	if (rc < 0) {
+		dev_err(chg->dev, "Couldn't read USBIN_CMD_IL rc=%d\n", rc);
+		return rc;
+	}
+	*suspend = temp & USBIN_SUSPEND_BIT;
+
+	return rc;
+}
+
 struct apsd_result {
 	const char * const name;
 	const u8 bit;
@@ -156,8 +191,8 @@ int smblib_enable_charging(struct smb_charger *chg, bool enable)
 	return rc;
 }
 
-static int smblib_set_charge_param(struct smb_charger *chg,
-				struct smb_chg_param *param, int val_u)
+int smblib_set_charge_param(struct smb_charger *chg,
+			    struct smb_chg_param *param, int val_u)
 {
 	int rc = 0;
 	u8 val_raw;
@@ -182,7 +217,7 @@ static int smblib_set_charge_param(struct smb_charger *chg,
 	return rc;
 }
 
-static int smblib_set_usb_suspend(struct smb_charger *chg, bool suspend)
+int smblib_set_usb_suspend(struct smb_charger *chg, bool suspend)
 {
 	int rc = 0;
 
@@ -195,7 +230,7 @@ static int smblib_set_usb_suspend(struct smb_charger *chg, bool suspend)
 	return rc;
 }
 
-static int smblib_set_dc_suspend(struct smb_charger *chg, bool suspend)
+int smblib_set_dc_suspend(struct smb_charger *chg, bool suspend)
 {
 	int rc = 0;
 
diff --git a/drivers/power/qcom-charger/smb-lib.h b/drivers/power/qcom-charger/smb-lib.h
index af3d29cc2d20..23639ba181c8 100644
--- a/drivers/power/qcom-charger/smb-lib.h
+++ b/drivers/power/qcom-charger/smb-lib.h
@@ -96,7 +96,15 @@ int smblib_read(struct smb_charger *chg, u16 addr, u8 *val);
 int smblib_masked_write(struct smb_charger *chg, u16 addr, u8 mask, u8 val);
 int smblib_write(struct smb_charger *chg, u16 addr, u8 val);
 
+int smblib_get_charge_param(struct smb_charger *chg,
+			    struct smb_chg_param *param, int *val_u);
+int smblib_get_usb_suspend(struct smb_charger *chg, int *suspend);
+
 int smblib_enable_charging(struct smb_charger *chg, bool enable);
+int smblib_set_charge_param(struct smb_charger *chg,
+			    struct smb_chg_param *param, int val_u);
+int smblib_set_usb_suspend(struct smb_charger *chg, bool suspend);
+int smblib_set_dc_suspend(struct smb_charger *chg, bool suspend);
 
 int smblib_vbus_regulator_enable(struct regulator_dev *rdev);
 int smblib_vbus_regulator_disable(struct regulator_dev *rdev);