smb-lib: add support of DP/DM pulsing for QC2.0 adapter
This change will enable userspace to control adapter's output
voltage. Userspace can force adapter's output voltage to
5V/9V/12V.
Change-Id: I0c367e252c95b28c3b495578ce6552716e358c70
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>
diff --git a/drivers/power/supply/qcom/smb-lib.c b/drivers/power/supply/qcom/smb-lib.c
index 1cd3652..65b651f 100644
--- a/drivers/power/supply/qcom/smb-lib.c
+++ b/drivers/power/supply/qcom/smb-lib.c
@@ -2054,6 +2054,18 @@
return rc;
}
+static int smblib_force_vbus_voltage(struct smb_charger *chg, u8 val)
+{
+ int rc;
+
+ rc = smblib_masked_write(chg, CMD_HVDCP_2_REG, val, val);
+ if (rc < 0)
+ smblib_err(chg, "Couldn't write to CMD_HVDCP_2_REG rc=%d\n",
+ rc);
+
+ return rc;
+}
+
int smblib_dp_dm(struct smb_charger *chg, int val)
{
int target_icl_ua, rc = 0;
@@ -2105,6 +2117,21 @@
smblib_dbg(chg, PR_PARALLEL, "ICL DOWN ICL=%d reduction=%d\n",
target_icl_ua, chg->usb_icl_delta_ua);
break;
+ case POWER_SUPPLY_DP_DM_FORCE_5V:
+ rc = smblib_force_vbus_voltage(chg, FORCE_5V_BIT);
+ if (rc < 0)
+ pr_err("Failed to force 5V\n");
+ break;
+ case POWER_SUPPLY_DP_DM_FORCE_9V:
+ rc = smblib_force_vbus_voltage(chg, FORCE_9V_BIT);
+ if (rc < 0)
+ pr_err("Failed to force 9V\n");
+ break;
+ case POWER_SUPPLY_DP_DM_FORCE_12V:
+ rc = smblib_force_vbus_voltage(chg, FORCE_12V_BIT);
+ if (rc < 0)
+ pr_err("Failed to force 12V\n");
+ break;
case POWER_SUPPLY_DP_DM_ICL_UP:
default:
break;
@@ -3566,16 +3593,6 @@
/* the APSD done handler will set the USB supply type */
apsd_result = smblib_get_apsd_result(chg);
- if (get_effective_result(chg->hvdcp_hw_inov_dis_votable)) {
- if (apsd_result->pst == POWER_SUPPLY_TYPE_USB_HVDCP) {
- /* force HVDCP2 to 9V if INOV is disabled */
- rc = smblib_masked_write(chg, CMD_HVDCP_2_REG,
- FORCE_9V_BIT, FORCE_9V_BIT);
- if (rc < 0)
- smblib_err(chg,
- "Couldn't force 9V HVDCP rc=%d\n", rc);
- }
- }
smblib_dbg(chg, PR_INTERRUPT, "IRQ: hvdcp-3p0-auth-done rising; %s detected\n",
apsd_result->name);