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phy: rockchip-inno-usb2: add SDP detect retry

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If detect a SDP charger type, we retry twice more to avoid
DCP falsely identified as SDP due to hardware signal error.

Change-Id: I1bf7bd076cd7767938f6944f1156daa7e64870e4
Signed-off-by: Feng Mingli <fml@rock-chips.com>
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
This commit is contained in:
Feng Mingli
2016-08-10 11:43:04 +08:00
committed by Tao Huang
parent 5cac822128
commit 67bfd0236c
1 changed files with 15 additions and 0 deletions
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15
drivers/phy/rockchip/phy-rockchip-inno-usb2.c
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@@ -233,6 +233,7 @@ struct rockchip_usb2phy {
enum usb_chg_state chg_state;
enum power_supply_type chg_type;
u8 dcd_retries;
u8 primary_retries;
struct extcon_dev *edev;
const struct rockchip_usb2phy_cfg *phy_cfg;
struct rockchip_usb2phy_port ports[USB2PHY_NUM_PORTS];
@@ -724,6 +725,7 @@ static void rockchip_chg_detect_work(struct work_struct *work)
rockchip_chg_enable_dcd(rphy, true);
rphy->chg_state = USB_CHG_STATE_WAIT_FOR_DCD;
rphy->dcd_retries = 0;
rphy->primary_retries = 0;
delay = CHG_DCD_POLL_TIME;
break;
case USB_CHG_STATE_WAIT_FOR_DCD:
@@ -761,6 +763,19 @@ static void rockchip_chg_detect_work(struct work_struct *work)
rphy->chg_state = USB_CHG_STATE_DETECTED;
delay = 0;
} else {
if (rphy->primary_retries < 2) {
/* Turn off DCD circuitry */
rockchip_chg_enable_dcd(rphy, false);
/* Voltage Source on DP, Probe on DM */
rockchip_chg_enable_primary_det(rphy,
true);
delay = CHG_PRIMARY_DET_TIME;
rphy->chg_state =
USB_CHG_STATE_DCD_DONE;
rphy->primary_retries++;
/* break USB_CHG_STATE_DCD_DONE */
break;
}
rphy->chg_type = POWER_SUPPLY_TYPE_USB;
rphy->chg_state = USB_CHG_STATE_DETECTED;
delay = 0;