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authorTony Lindgren <tony@atomide.com>2019-08-31 02:23:16 +0300
committerSebastian Reichel <sebastian.reichel@collabora.com>2019-09-03 00:08:07 +0300
commit7f7378618b4103c083db7de5017df958f8ada070 (patch)
tree0ac9a70b8263996326b9634e6713f67b251b295b /drivers/phy/motorola
parent7cfd33d997a4c320b6bbce5e9592230dae1e73d2 (diff)
downloadlinux-7f7378618b4103c083db7de5017df958f8ada070.tar.xz
power: supply: cpcap-charger: Enable vbus boost voltage
We are currently not enabling VBUS boost for cpcap when in host mode. This means the VBUS is fed at the battery voltage level, which can cause flakeyness enumerating devices. Looks like the boost control for VBUS is CPCAP_BIT_VBUS_SWITCH that we must enable in the charger for nice 4.92 V VBUS output. And looks like we must not use the STBY pin enabling but must instead use manual VBUS control in phy-cpcap-usb. We want to do this in cpcap_charger_vbus_work() and also set a flag for feeding_vbus to avoid races between USB detection and charger detection, and disable charging if feeding_vbus is set. Cc: Jacopo Mondi <jacopo@jmondi.org> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: Marcel Partap <mpartap@gmx.net> Cc: Merlijn Wajer <merlijn@wizzup.org> Cc: Michael Scott <hashcode0f@gmail.com> Cc: NeKit <nekit1000@gmail.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Sebastian Reichel <sre@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/phy/motorola')
-rw-r--r--drivers/phy/motorola/phy-cpcap-usb.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/phy/motorola/phy-cpcap-usb.c b/drivers/phy/motorola/phy-cpcap-usb.c
index 6601ad0dfb3a..ead06c6c2601 100644
--- a/drivers/phy/motorola/phy-cpcap-usb.c
+++ b/drivers/phy/motorola/phy-cpcap-usb.c
@@ -231,8 +231,9 @@ static void cpcap_usb_detect(struct work_struct *work)
goto out_err;
error = regmap_update_bits(ddata->reg, CPCAP_REG_USBC3,
- CPCAP_BIT_VBUSSTBY_EN,
- CPCAP_BIT_VBUSSTBY_EN);
+ CPCAP_BIT_VBUSSTBY_EN |
+ CPCAP_BIT_VBUSEN_SPI,
+ CPCAP_BIT_VBUSEN_SPI);
if (error)
goto out_err;
@@ -240,7 +241,8 @@ static void cpcap_usb_detect(struct work_struct *work)
}
error = regmap_update_bits(ddata->reg, CPCAP_REG_USBC3,
- CPCAP_BIT_VBUSSTBY_EN, 0);
+ CPCAP_BIT_VBUSSTBY_EN |
+ CPCAP_BIT_VBUSEN_SPI, 0);
if (error)
goto out_err;