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path: root/drivers/phy/motorola/phy-cpcap-usb.c
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* power: supply: cpcap-charger: Enable vbus boost voltageTony Lindgren2019-09-021-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* phy: cpcap-usb: Fix platform_get_irq_byname's error checking.Arvind Yadav2017-12-151-1/+1
| | | | | | | | | | | | The platform_get_irq_byname() function returns negative if an error occurs. zero or positive number on success. platform_get_irq_byname() error checking for zero is not correct. Fixes: 6d6ce40f63af ("phy: cpcap-usb: Add CPCAP PMIC USB support") Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
* phy: cpcap-usb: remove a stray tabDan Carpenter2017-08-221-1/+1
| | | | | | | | This line was indented further that it should have been. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
* phy: cpcap-usb: Fix missing return statementTony Lindgren2017-06-161-0/+2
| | | | | | | | | | | | Commit 8ae904e3c236 ("phy: cpcap-usb: Add CPCAP PMIC USB support") is missing return statement as noted by Colin Ian King <colin.king@canonical.com>. If the optional pins are not configured, we just want to return early and not attempt to configure the pins. Fixes: 8ae904e3c236 ("phy: cpcap-usb: Add CPCAP PMIC USB support") Reported-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
* phy: cpcap-usb: Add CPCAP PMIC USB supportTony Lindgren2017-06-061-0/+674
Some Motorola phones like droid 4 use a custom CPCAP PMIC that has a multiplexing USB PHY. This USB PHY can operate at least in four modes using pin multiplexing and two control GPIOS: - Pass through companion PHY for the SoC USB PHY - ULPI PHY for the SoC - Pass through USB for the modem - UART debug console for the SoC This patch adds support for droid 4 USB PHY and debug UART modes, support for other modes can be added later on as needed. Both peripheral and host mode are working for the USB. The host mode depends on the cpcap-charger driver for VBUS. VBUS and ID pin detection are done using cpcap-adc IIO ADC driver. Cc: devicetree@vger.kernel.org Cc: Marcel Partap <mpartap@gmx.net> Cc: Michael Scott <michael.scott@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Tested-by: Sebastian Reichel <sre@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>