From: ChiYuan Huang cy_huang@richtek.com

Add Mediatek MT6370 TCPC binding documentation.

Signed-off-by: ChiYuan Huang cy_huang@richtek.com --- .../bindings/usb/mediatek,mt6370-tcpc.yaml | 36 +++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/mediatek,mt6370-tcpc.yaml

diff --git a/Documentation/devicetree/bindings/usb/mediatek,mt6370-tcpc.yaml b/Documentation/devicetree/bindings/usb/mediatek,mt6370-tcpc.yaml new file mode 100644 index 000000000000..aa083e92bbba --- /dev/null +++ b/Documentation/devicetree/bindings/usb/mediatek,mt6370-tcpc.yaml @@ -0,0 +1,36 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/usb/mediatek,mt6370-tcpc.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: Mediatek MT6370 Type-C Port Switch and Power Delivery controller + +maintainers: + - ChiYuan Huang cy_huang@richtek.com + +description: | + Mediatek MT6370 is a multi-functional device. + It integrates charger, ADC, flash, RGB indicators, + regulators (DSV/VIBLDO), and TypeC Port Switch with Power Delivery controller. + This document only describes MT6370 Type-C Port Switch and + Power Delivery controller. + +properties: + compatible: + enum: + - mediatek,mt6370-tcpc + + interrupts: + maxItems: 1 + + connector: + type: object + $ref: /schemas/connector/usb-connector.yaml# + unevaluatedProperties: false + +additionalProperties: false + +required: + - compatible + - interrupts

From: ChiaEn Wu chiaen_wu@richtek.com

Add Mediatek MT6370 Charger binding documentation.

Signed-off-by: ChiaEn Wu chiaen_wu@richtek.com --- .../power/supply/mediatek,mt6370-charger.yaml | 60 +++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml

diff --git a/Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml b/Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml new file mode 100644 index 000000000000..b63553ebb15b --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml @@ -0,0 +1,60 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/mediatek,mt6370-charger.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Mediatek MT6370 Battery Charger + +maintainers: + - ChiaEn Wu chiaen_wu@richtek.com + +description: | + This module is part of the MT6370 MFD device. + Provides Battery Charger, Boost for OTG devices and BC1.2 detection. + +properties: + compatible: + const: mediatek,mt6370-charger + + interrupts: + description: | + Specify what irqs are needed to be handled by MT6370 Charger driver. IRQ + "MT6370_IRQ_CHG_MIVR", "MT6370_IRQ_ATTACH" and "MT6370_IRQ_OVPCTRL_UVP_D" + are required. + items: + - description: BC1.2 done irq + - description: usb plug in irq + - description: mivr irq + + interrupt-names: + items: + - const: attach_i + - const: uvp_d_evt + - const: mivr + + io-channels: + description: | + Use ADC channel to read vbus, ibus, ibat, etc., info. Ibus ADC channel + is required. + minItems: 1 + maxItems: 9 + + usb-otg-vbus-regulator: + type: object + description: OTG boost regulator. + $ref: /schemas/regulator/regulator.yaml# + + properties: + enable-gpio: + maxItems: 1 + +required: + - compatible + - interrupts + - interrupt-names + - io-channels + +additionalProperties: false + +...

From: ChiYuan Huang cy_huang@richtek.com

Add Mediatek mt6370 current sink type LED indicator binding documentation.

Signed-off-by: ChiYuan Huang cy_huang@richtek.com --- .../leds/mediatek,mt6370-indicator.yaml | 48 +++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/mediatek,mt6370-indicator.yaml

diff --git a/Documentation/devicetree/bindings/leds/mediatek,mt6370-indicator.yaml b/Documentation/devicetree/bindings/leds/mediatek,mt6370-indicator.yaml new file mode 100644 index 000000000000..42b96c8047a3 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/mediatek,mt6370-indicator.yaml @@ -0,0 +1,48 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/mediatek,mt6370-indicator.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: LED driver for MT6370 PMIC from MediaTek Integrated. + +maintainers: + - Alice Chen alice_chen@richtek.com + +description: | + This module is part of the MT6370 MFD device. + Add MT6370 LED driver include 4-channel RGB LED support Register/PWM/Breath Mode + +properties: + compatible: + const: mediatek,mt6370-indicator + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + +patternProperties: + "^(multi-)?led@[0-3]$": + $ref: common.yaml# + type: object + + properties: + reg: + description: | + Index of the LED. + enum: + - 0 # LED output ISINK1 + - 1 # LED output ISINK2 + - 2 # LED output ISINK3 + - 3 # LED output ISINK4 + + unevaluatedProperties: false + +required: + - compatible + - "#address-cells" + - "#size-cells" + +additionalProperties: false

From: Alice Chen alice_chen@richtek.com

Add Mediatek MT6370 flashlight binding documentation.

Signed-off-by: Alice Chen alice_chen@richtek.com --- .../leds/mediatek,mt6370-flashlight.yaml | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/mediatek,mt6370-flashlight.yaml

diff --git a/Documentation/devicetree/bindings/leds/mediatek,mt6370-flashlight.yaml b/Documentation/devicetree/bindings/leds/mediatek,mt6370-flashlight.yaml new file mode 100644 index 000000000000..13610bc23d0e --- /dev/null +++ b/Documentation/devicetree/bindings/leds/mediatek,mt6370-flashlight.yaml @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/mediatek,mt6370-flashlight.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Flash LED driver for MT6370 PMIC from MediaTek Integrated. + +maintainers: + - Alice Chen alice_chen@richtek.com + +description: | + This module is part of the MT6370 MFD device. + Add MT6370 flash LED driver include 2-channel flash LED support Torch/Strobe Mode. + +properties: + compatible: + const: mediatek,mt6370-flashlight + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + +patternProperties: + "^led@[0-1]$": + type: object + $ref: common.yaml# + + properties: + reg: + enum: + - 0 # Address of LED1 + - 1 # Address of LED2 + + unevaluatedProperties: false + +required: + - compatible + - "#address-cells" + - "#size-cells" + +additionalProperties: false

From: ChiYuan Huang cy_huang@richtek.com

Add mt6370 backlight binding documentation.

Signed-off-by: ChiYuan Huang cy_huang@richtek.com --- .../backlight/mediatek,mt6370-backlight.yaml | 107 ++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml

diff --git a/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml new file mode 100644 index 000000000000..25a05e607e83 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml @@ -0,0 +1,107 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/backlight/mediatek,mt6370-backlight.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Mediatek MT6370 Backlight + +maintainers: + - ChiaEn Wu chiaen_wu@richtek.com + +description: | + This module is part of the MT6370 MFD device. + The MT6370 Backlight WLED driver supports up to a 29V output voltage for + 4 channels of 8 series WLEDs. Each channel supports up to 30mA of current + capability with 2048 current steps (11 bits) in exponential or linear + mapping curves. + +allOf: + - $ref: common.yaml# + +properties: + compatible: + const: mediatek,mt6370-backlight + + default-brightness: + minimum: 0 + maximum: 2048 + + max-brightness: + minimum: 0 + maximum: 2048 + + enable-gpios: + description: External backlight 'enable' pin + maxItems: 1 + + mediatek,bled-pwm-enable: + description: | + Enable external PWM input for backlight dimming + type: boolean + + mediatek,bled-pwm-hys-enable: + description: | + Enable the backlight input-hysteresis for PWM mode + type: boolean + + mediatek,bled-pwm-hys-input-bit: + $ref: /schemas/types.yaml#/definitions/uint8 + enum: [0, 1, 2, 3] + description: | + The selection of the upper and lower bounds threshold of backlight + PWM resolution. If we choose selection 3 (6 bits), the variation of PWM + resolution needs over than 64 steps (2^6). + value mapping: + - 0: 1 + - 1: 2 + - 2: 4 + - 3: 6 + + mediatek,bled-ovp-shutdown: + description: | + Enable the backlight shutdown when OVP level triggered + type: boolean + + mediatek,bled-ovp-microvolt: + enum: [0, 1, 2, 3] + description: | + Backlight OVP level selection. + value mapping: + - 0: 17000000 + - 1: 21000000 + - 2: 25000000 + - 3: 29000000 + + mediatek,bled-ocp-shutdown: + description: | + Enable the backlight shutdown when OCP level triggerred. + type: boolean + + mediatek,bled-ocp-microamp: + enum: [0, 1, 2, 3] + description: | + Backlight OC level selection. + value mapping: + - 0: 900000 + - 1: 1200000 + - 2: 1500000 + - 3: 1800000 + + mediatek,bled-channel-use: + $ref: /schemas/types.yaml#/definitions/uint8 + description: | + Backlight LED channel to be used. + Each bit mapping to: + - 0: CH4 + - 1: CH3 + - 2: CH2 + - 3: CH1 + minimum: 1 + maximum: 15 + +required: + - compatible + - mediatek,bled-channel-use + +additionalProperties: false

From: ChiYuan Huang cy_huang@richtek.com

Add Mediatek MT6370 binding documentation.

Signed-off-by: ChiYuan Huang cy_huang@richtek.com --- .../bindings/mfd/mediatek,mt6370.yaml | 279 ++++++++++++++++++ .../dt-bindings/iio/adc/mediatek,mt6370_adc.h | 18 ++ 2 files changed, 297 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/mediatek,mt6370.yaml create mode 100644 include/dt-bindings/iio/adc/mediatek,mt6370_adc.h

diff --git a/Documentation/devicetree/bindings/mfd/mediatek,mt6370.yaml b/Documentation/devicetree/bindings/mfd/mediatek,mt6370.yaml new file mode 100644 index 000000000000..6c2639e81e50 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/mediatek,mt6370.yaml @@ -0,0 +1,279 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/mediatek,mt6370.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Mediatek MT6370 SubPMIC + +maintainers: + - ChiYuan Huang cy_huang@richtek.com + +description: | + MT6370 is a highly-integrated smart power management IC, which includes a + single cell Li-Ion/Li-Polymer switching battery charger, a USB Type-C & + Power Delivery (PD) controller, dual flash LED current sources, a RGB LED + driver, a backlight WLED driver, a display bias driver and a general LDO for + portable devices. + +properties: + compatible: + const: mediatek,mt6370 + + reg: + maxItems: 1 + + wakeup-source: true + + interrupts: + maxItems: 1 + + interrupt-controller: true + + '#interrupt-cells': + const: 1 + + adc: + type: object + description: | + Provides 9 channels for system monitoring, including vbusdiv5, vbusdiv2, + vbat, vsys, chg_vddp, ts_bat, ibus, ibat, and temp_jc. + + properties: + compatible: + const: mediatek,mt6370-adc + + "#io-channel-cells": + const: 1 + + required: + - compatible + - '#io-channel-cells' + + backlight: + type: object + $ref: /schemas/leds/backlight/mediatek,mt6370-backlight.yaml# + + charger: + type: object + $ref: /schemas/power/supply/mediatek,mt6370-charger.yaml# + + tcpc: + type: object + $ref: /schemas/usb/mediatek,mt6370-tcpc.yaml# + + indicator: + type: object + $ref: /schemas/leds/mediatek,mt6370-indicator.yaml# + + flashlight: + type: object + $ref: /schemas/leds/mediatek,mt6370-flashlight.yaml# + + regulators: + type: object + description: | + List all supported regulators, which support the control for DisplayBias + voltages and one general purpose LDO which commonly used to drive the + vibrator. + + patternProperties: + "^(dsvbst|vibldo)$": + $ref: /schemas/regulator/regulator.yaml# + type: object + unevaluatedProperties: false + + "^(dsvpos|dsvneg)$": + $ref: /schemas/regulator/regulator.yaml# + type: object + unevaluatedProperties: false + + properties: + enable-gpio: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - interrupt-controller + - '#interrupt-cells' + - regulators + - adc + - backlight + - indicator + - tcpc + - charger + - flashlight + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/leds/common.h> + #include <dt-bindings/iio/adc/mediatek,mt6370_adc.h> + #include <dt-bindings/usb/pd.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + + pmic@34 { + compatible = "mediatek,mt6370"; + reg = <0x34>; + wakeup-source; + interrupts-extended = <&gpio26 3 IRQ_TYPE_LEVEL_LOW>; + interrupt-controller; + #interrupt-cells = <1>; + + mt6370_adc: adc { + compatible = "mediatek,mt6370-adc"; + #io-channel-cells = <1>; + }; + + backlight { + compatible = "mediatek,mt6370-backlight"; + mediatek,bled-channel-use = /bits/ 8 <15>; + }; + + charger { + compatible = "mediatek,mt6370-charger"; + interrupts = <48>, <68>, <6>; + interrupt-names = "attach_i", "uvp_d_evt", "mivr"; + io-channels = <&mt6370_adc MT6370_CHAN_IBUS>; + + mt6370_otg_vbus: usb-otg-vbus-regulator { + regulator-name = "mt6370-usb-otg-vbus"; + regulator-min-microvolt = <4350000>; + regulator-max-microvolt = <5800000>; + regulator-min-microamp = <500000>; + regulator-max-microamp = <3000000>; + }; + }; + + indicator { + compatible = "mediatek,mt6370-indicator"; + #address-cells = <1>; + #size-cells = <0>; + + multi-led@0 { + reg = <0>; + function = LED_FUNCTION_INDICATOR; + color = <LED_COLOR_ID_RGB>; + led-max-microamp = <24000>; + #address-cells = <1>; + #size-cells = <0>; + led@0 { + reg = <0>; + color = <LED_COLOR_ID_RED>; + }; + led@1 { + reg = <1>; + color = <LED_COLOR_ID_GREEN>; + }; + led@2 { + reg = <2>; + color = <LED_COLOR_ID_BLUE>; + }; + }; + led@3 { + reg = <3>; + function = LED_FUNCTION_INDICATOR; + color = <LED_COLOR_ID_WHITE>; + led-max-microamp = <6000>; + }; + }; + + flashlight { + compatible = "mediatek,mt6370-flashlight"; + #address-cells = <1>; + #size-cells = <0>; + led@0 { + reg = <0>; + led-sources = <0>; + function = LED_FUNCTION_FLASH; + color = <LED_COLOR_ID_WHITE>; + function-enumerator = <1>; + led-max-microamp = <200000>; + flash-max-microamp = <500000>; + flash-max-timeout-us = <1248000>; + }; + led@1 { + reg = <1>; + led-sources = <1>; + function = LED_FUNCTION_FLASH; + color = <LED_COLOR_ID_WHITE>; + function-enumerator = <2>; + led-max-microamp = <200000>; + flash-max-microamp = <500000>; + flash-max-timeout-us = <1248000>; + }; + }; + + tcpc { + compatible = "mediatek,mt6370-tcpc"; + interrupts-extended = <&gpio26 4 IRQ_TYPE_LEVEL_LOW>; + + connector { + compatible = "usb-c-connector"; + label = "USB-C"; + vbus-supply = <&mt6370_otg_vbus>; + data-role = "dual"; + power-role = "dual"; + try-power-role = "sink"; + source-pdos = <PDO_FIXED(5000, 1000, PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP)>; + sink-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP)>; + op-sink-microwatt = <10000000>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + endpoint { + remote-endpoint = <&usb_hs>; + }; + }; + port@1 { + reg = <1>; + endpoint { + remote-endpoint = <&usb_ss>; + }; + }; + port@2 { + reg = <2>; + endpoint { + remote-endpoint = <&dp_aux>; + }; + }; + }; + }; + }; + + regulators { + dsvbst { + regulator-name = "mt6370-dsv-vbst"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <6200000>; + }; + dsvpos { + regulator-name = "mt6370-dsv-vpos"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <6000000>; + regulator-boot-on; + }; + dsvneg { + regulator-name = "mt6370-dsv-vneg"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <6000000>; + regulator-boot-on; + }; + vibldo { + regulator-name = "mt6370-vib-ldo"; + regulator-min-microvolt = <1600000>; + regulator-max-microvolt = <4000000>; + }; + }; + }; + }; diff --git a/include/dt-bindings/iio/adc/mediatek,mt6370_adc.h b/include/dt-bindings/iio/adc/mediatek,mt6370_adc.h new file mode 100644 index 000000000000..6ee725547763 --- /dev/null +++ b/include/dt-bindings/iio/adc/mediatek,mt6370_adc.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */ + +#ifndef __DT_BINDINGS_MEDIATEK_MT6370_ADC_H__ +#define __DT_BINDINGS_MEDIATEK_MT6370_ADC_H__ + +/* ADC Channel Index */ +#define MT6370_CHAN_VBUSDIV5 0 +#define MT6370_CHAN_VBUSDIV2 1 +#define MT6370_CHAN_VSYS 2 +#define MT6370_CHAN_VBAT 3 +#define MT6370_CHAN_TS_BAT 4 +#define MT6370_CHAN_IBUS 5 +#define MT6370_CHAN_IBAT 6 +#define MT6370_CHAN_CHG_VDDP 7 +#define MT6370_CHAN_TEMP_JC 8 +#define MT6370_CHAN_MAX 9 + +#endif

From: ChiaEn Wu chiaen_wu@richtek.com

Add ABI documentation for mt6370 non-standard ADC sysfs interfaces.

Signed-off-by: ChiaEn Wu chiaen_wu@richtek.com --- .../ABI/testing/sysfs-bus-iio-adc-mt6370 | 36 +++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-adc-mt6370

diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-mt6370 b/Documentation/ABI/testing/sysfs-bus-iio-adc-mt6370 new file mode 100644 index 000000000000..039b3381176a --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-mt6370 @@ -0,0 +1,36 @@ +What: /sys/bus/iio/devices/iio:deviceX/in_voltage0_raw +KernelVersion: 5.18 +Contact: chiaen_wu@richtek.com +Description: + Indicated MT6370 VBUS ADC with lower accuracy(+-75mA) + higher measure range(1~22V) + Calculating with scale returns voltage in uV + +What: /sys/bus/iio/devices/iio:deviceX/in_voltage1_raw +KernelVersion: 5.18 +Contact: chiaen_wu@richtek.com +Description: + Indicated MT6370 VBUS ADC with higher accuracy(+-30mA) + lower measure range(1~9.76V) + Calculating with scale offset returns voltage in uV + +What: /sys/bus/iio/devices/iio:deviceX/in_voltage4_raw +KernelVersion: 5.18 +Contact: chiaen_wu@richtek.com +Description: + Indicated MT6370 TS_BAT ADC + Calculating with scale returns voltage in uV + +What: /sys/bus/iio/devices/iio:deviceX/in_voltage7_raw +KernelVersion: 5.18 +Contact: chiaen_wu@richtek.com +Description: + Indicated MT6370 CHG_VDDP ADC + Calculating with scale returns voltage in mV + +What: /sys/bus/iio/devices/iio:deviceX/in_temp8_raw +KernelVersion: 5.18 +Contact: chiaen_wu@richtek.com +Description: + Indicated MT6370 IC junction temperature + Calculating with scale and offset returns temperature in degree

From: ChiYuan Huang cy_huang@richtek.com

Add chip level mt6370 tcpci driver.

Signed-off-by: ChiYuan Huang cy_huang@richtek.com --- drivers/usb/typec/tcpm/Kconfig | 8 + drivers/usb/typec/tcpm/Makefile | 1 + drivers/usb/typec/tcpm/tcpci_mt6370.c | 212 ++++++++++++++++++++++++++ 3 files changed, 221 insertions(+) create mode 100644 drivers/usb/typec/tcpm/tcpci_mt6370.c

diff --git a/drivers/usb/typec/tcpm/Kconfig b/drivers/usb/typec/tcpm/Kconfig index 557f392fe24d..f4b7363bc7e9 100644 --- a/drivers/usb/typec/tcpm/Kconfig +++ b/drivers/usb/typec/tcpm/Kconfig @@ -35,6 +35,14 @@ config TYPEC_MT6360 USB Type-C. It works with Type-C Port Controller Manager to provide USB PD and USB Type-C functionalities.

+config TYPEC_TCPCI_MT6370 + tristate "Mediatek MT6370 Type-C driver" + depends on MFD_MT6370 + help + Mediatek MT6370 is a multi-functional IC that includes + USB Type-C. It works with Type-C Port Controller Manager + to provide USB PD and USB Type-C functionalities. + config TYPEC_TCPCI_MAXIM tristate "Maxim TCPCI based Type-C chip driver" help diff --git a/drivers/usb/typec/tcpm/Makefile b/drivers/usb/typec/tcpm/Makefile index 7d499f3569fd..906d9dced8e7 100644 --- a/drivers/usb/typec/tcpm/Makefile +++ b/drivers/usb/typec/tcpm/Makefile @@ -6,4 +6,5 @@ typec_wcove-y := wcove.o obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o obj-$(CONFIG_TYPEC_RT1711H) += tcpci_rt1711h.o obj-$(CONFIG_TYPEC_MT6360) += tcpci_mt6360.o +obj-$(CONFIG_TYPEC_TCPCI_MT6370) += tcpci_mt6370.o obj-$(CONFIG_TYPEC_TCPCI_MAXIM) += tcpci_maxim.o diff --git a/drivers/usb/typec/tcpm/tcpci_mt6370.c b/drivers/usb/typec/tcpm/tcpci_mt6370.c new file mode 100644 index 000000000000..ce7f5e03fd10 --- /dev/null +++ b/drivers/usb/typec/tcpm/tcpci_mt6370.c @@ -0,0 +1,212 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <linux/bits.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/pm_wakeup.h> +#include <linux/pm_wakeirq.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/usb/tcpm.h> +#include "tcpci.h" + +#define MT6370_REG_SYSCTRL8 0x9B + +#define MT6370_AUTOIDLE_MASK BIT(3) + +#define MT6370_VENDOR_ID 0x29CF +#define MT6370_TCPC_DID_A 0x2170 + +struct mt6370_priv { + struct device *dev; + struct regulator *vbus; + struct tcpci *tcpci; + struct tcpci_data tcpci_data; + int irq; +}; + +static const struct reg_sequence mt6370_reg_init[] = { + REG_SEQ(0xA0, 0x1, 1000), + REG_SEQ(0x81, 0x38, 0), + REG_SEQ(0x82, 0x82, 0), + REG_SEQ(0xBA, 0xFC, 0), + REG_SEQ(0xBB, 0x50, 0), + REG_SEQ(0x9E, 0x8F, 0), + REG_SEQ(0xA1, 0x5, 0), + REG_SEQ(0xA2, 0x4, 0), + REG_SEQ(0xA3, 0x4A, 0), + REG_SEQ(0xA4, 0x01, 0), + REG_SEQ(0x95, 0x01, 0), + REG_SEQ(0x80, 0x71, 0), + REG_SEQ(0x9B, 0x3A, 1000) +}; + +static int mt6370_tcpc_init(struct tcpci *tcpci, struct tcpci_data *data) +{ + u16 did; + int ret; + + ret = regmap_register_patch(data->regmap, mt6370_reg_init, + ARRAY_SIZE(mt6370_reg_init)); + if (ret) + return ret; + + ret = regmap_raw_read(data->regmap, TCPC_BCD_DEV, &did, sizeof(u16)); + if (ret) + return ret; + + if (did == MT6370_TCPC_DID_A) { + ret = regmap_write(data->regmap, TCPC_FAULT_CTRL, 0x80); + if (ret) + return ret; + } + + return 0; +} + +static int mt6370_tcpc_set_vconn(struct tcpci *tcpci, struct tcpci_data *data, + bool enable) +{ + return regmap_update_bits(data->regmap, MT6370_REG_SYSCTRL8, + MT6370_AUTOIDLE_MASK, + !enable ? MT6370_AUTOIDLE_MASK : 0); +} + +static int mt6370_tcpc_set_vbus(struct tcpci *tcpci, struct tcpci_data *data, + bool source, bool sink) +{ + struct mt6370_priv *priv = container_of(data, struct mt6370_priv, + tcpci_data); + int ret; + + ret = regulator_is_enabled(priv->vbus); + if (ret < 0) + return ret; + + if (ret && !source) + ret = regulator_disable(priv->vbus); + else if (!ret && source) + ret = regulator_enable(priv->vbus); + else + ret = 0; + + return ret; +} + +static irqreturn_t mt6370_irq_handler(int irq, void *dev_id) +{ + struct mt6370_priv *priv = dev_id; + + return tcpci_irq(priv->tcpci); +} + +static int mt6370_check_vendor_info(struct mt6370_priv *priv) +{ + struct regmap *regmap = priv->tcpci_data.regmap; + u16 vid; + int ret; + + ret = regmap_raw_read(regmap, TCPC_VENDOR_ID, &vid, sizeof(u16)); + if (ret) + return ret; + + if (vid != MT6370_VENDOR_ID) { + dev_err(priv->dev, "Vendor ID not correct 0x%02x\n", vid); + return -ENODEV; + } + + return 0; +} + +static int mt6370_tcpc_probe(struct platform_device *pdev) +{ + struct mt6370_priv *priv; + int ret; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = &pdev->dev; + platform_set_drvdata(pdev, priv); + + priv->tcpci_data.regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!priv->tcpci_data.regmap) { + dev_err(&pdev->dev, "Failed to init regmap\n"); + return -ENODEV; + } + + ret = mt6370_check_vendor_info(priv); + if (ret) { + dev_err(&pdev->dev, "Failed to check vendor info (%d)\n", ret); + return ret; + } + + priv->irq = platform_get_irq(pdev, 0); + if (priv->irq < 0) { + dev_err(&pdev->dev, "Failed to get TCPC irq (%d)\n", priv->irq); + return priv->irq; + } + + /* Assign TCPCI feature and ops */ + priv->tcpci_data.auto_discharge_disconnect = 1; + priv->tcpci_data.init = mt6370_tcpc_init; + priv->tcpci_data.set_vconn = mt6370_tcpc_set_vconn; + + priv->vbus = devm_regulator_get_optional(&pdev->dev, "vbus"); + if (!IS_ERR(priv->vbus)) + priv->tcpci_data.set_vbus = mt6370_tcpc_set_vbus; + + priv->tcpci = tcpci_register_port(&pdev->dev, &priv->tcpci_data); + if (IS_ERR(priv->tcpci)) { + dev_err(&pdev->dev, "Failed to register tcpci port\n"); + return PTR_ERR(priv->tcpci); + } + + ret = devm_request_threaded_irq(&pdev->dev, priv->irq, NULL, + mt6370_irq_handler, IRQF_ONESHOT, + dev_name(&pdev->dev), priv); + if (ret) { + dev_err(&pdev->dev, "Failed to allocate irq (%d)\n", ret); + tcpci_unregister_port(priv->tcpci); + return ret; + } + + device_init_wakeup(&pdev->dev, true); + dev_pm_set_wake_irq(&pdev->dev, priv->irq); + return 0; +} + +static int mt6370_tcpc_remove(struct platform_device *pdev) +{ + struct mt6370_priv *priv = platform_get_drvdata(pdev); + + disable_irq(priv->irq); + tcpci_unregister_port(priv->tcpci); + dev_pm_clear_wake_irq(&pdev->dev); + device_init_wakeup(&pdev->dev, false); + return 0; +} + +static const struct of_device_id mt6370_tcpc_devid_table[] = { + { .compatible = "mediatek,mt6370-tcpc", }, + {} +}; +MODULE_DEVICE_TABLE(of, mt6370_tcpc_devid_table); + +static struct platform_driver mt6370_tcpc_driver = { + .driver = { + .name = "mt6370-tcpc", + .of_match_table = mt6370_tcpc_devid_table, + }, + .probe = mt6370_tcpc_probe, + .remove = mt6370_tcpc_remove, +}; +module_platform_driver(mt6370_tcpc_driver); + +MODULE_AUTHOR("ChiYuan Huang cy_huang@richtek.com"); +MODULE_DESCRIPTION("MT6370 USB Type-C Port Controller Interface Driver"); +MODULE_LICENSE("GPL v2");

From: ChiaEn Wu chiaen_wu@richtek.com

Add Mediatek MT6370 ADC support.

Signed-off-by: ChiaEn Wu chiaen_wu@richtek.com --- drivers/iio/adc/Kconfig | 9 ++ drivers/iio/adc/Makefile | 1 + drivers/iio/adc/mt6370-adc.c | 262 +++++++++++++++++++++++++++++++++++ 3 files changed, 272 insertions(+) create mode 100644 drivers/iio/adc/mt6370-adc.c

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 71ab0a06aa82..09576fb478ad 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -737,6 +737,15 @@ config MEDIATEK_MT6360_ADC is used in smartphones and tablets and supports a 11 channel general purpose ADC.

+config MEDIATEK_MT6370_ADC + tristate "Mediatek MT6370 ADC driver" + depends on MFD_MT6370 + help + Say Y here to enable MT6370 ADC support. + + Integrated for System Monitoring includes is used in smartphones + and tablets and supports a 9 channel general purpose ADC. + config MEDIATEK_MT6577_AUXADC tristate "MediaTek AUXADC driver" depends on ARCH_MEDIATEK || COMPILE_TEST diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index 39d806f6d457..0ce285c7e2d0 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -68,6 +68,7 @@ obj-$(CONFIG_MCP320X) += mcp320x.o obj-$(CONFIG_MCP3422) += mcp3422.o obj-$(CONFIG_MCP3911) += mcp3911.o obj-$(CONFIG_MEDIATEK_MT6360_ADC) += mt6360-adc.o +obj-$(CONFIG_MEDIATEK_MT6370_ADC) += mt6370-adc.o obj-$(CONFIG_MEDIATEK_MT6577_AUXADC) += mt6577_auxadc.o obj-$(CONFIG_MEN_Z188_ADC) += men_z188_adc.o obj-$(CONFIG_MESON_SARADC) += meson_saradc.o diff --git a/drivers/iio/adc/mt6370-adc.c b/drivers/iio/adc/mt6370-adc.c new file mode 100644 index 000000000000..c30e1290973a --- /dev/null +++ b/drivers/iio/adc/mt6370-adc.c @@ -0,0 +1,262 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <dt-bindings/iio/adc/mediatek,mt6370_adc.h> +#include <linux/bits.h> +#include <linux/bitfield.h> +#include <linux/iio/iio.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +#define MT6370_REG_CHG_CTRL3 0x113 /* AICR */ +#define MT6370_REG_CHG_CTRL7 0x117 /* ICHG */ +#define MT6370_REG_CHG_ADC 0x121 +#define MT6370_REG_ADC_DATA_H 0x14C + +#define MT6370_ADC_START_MASK BIT(0) +#define MT6370_ADC_IN_SEL_MASK GENMASK(7, 4) +#define MT6370_AICR_ICHG_MASK GENMASK(7, 2) + +#define MT6370_AICR_400MA 0x6 +#define MT6370_ICHG_500MA 0x4 +#define MT6370_ICHG_900MA 0x8 + +#define ADC_CONV_TIME_US 35000 +#define ADC_CONV_POLLING_TIME 1000 + +struct mt6370_adc_data { + struct device *dev; + struct regmap *regmap; + struct mutex adc_lock; +}; + +static int mt6370_adc_read_channel(struct mt6370_adc_data *priv, int chan, + unsigned long addr, int *val) +{ + __be16 be_val; + unsigned int reg_val; + int ret; + + mutex_lock(&priv->adc_lock); + + reg_val = MT6370_ADC_START_MASK | + FIELD_PREP(MT6370_ADC_IN_SEL_MASK, addr); + ret = regmap_write(priv->regmap, MT6370_REG_CHG_ADC, reg_val); + if (ret) + goto adc_unlock; + + msleep(ADC_CONV_TIME_US / 1000); + + ret = regmap_read_poll_timeout(priv->regmap, + MT6370_REG_CHG_ADC, reg_val, + !(reg_val & MT6370_ADC_START_MASK), + ADC_CONV_POLLING_TIME, + ADC_CONV_TIME_US * 3); + if (ret) { + if (ret == -ETIMEDOUT) + dev_err(priv->dev, "Failed to wait adc conversion\n"); + goto adc_unlock; + } + + ret = regmap_raw_read(priv->regmap, MT6370_REG_ADC_DATA_H, + &be_val, sizeof(be_val)); + if (ret) + goto adc_unlock; + + *val = be16_to_cpu(be_val); + ret = IIO_VAL_INT; + +adc_unlock: + mutex_unlock(&priv->adc_lock); + + return ret; +} + +static int mt6370_adc_read_scale(struct mt6370_adc_data *priv, + int chan, int *val1, int *val2) +{ + unsigned int reg_val; + int ret; + + switch (chan) { + case MT6370_CHAN_VBAT: + case MT6370_CHAN_VSYS: + case MT6370_CHAN_CHG_VDDP: + *val1 = 5; + return IIO_VAL_INT; + case MT6370_CHAN_IBUS: + ret = regmap_read(priv->regmap, MT6370_REG_CHG_CTRL3, &reg_val); + if (ret) + return ret; + + reg_val = FIELD_GET(MT6370_AICR_ICHG_MASK, reg_val); + if (reg_val < MT6370_AICR_400MA) + *val1 = 33500; + else + *val1 = 50000; + + return IIO_VAL_INT; + case MT6370_CHAN_IBAT: + ret = regmap_read(priv->regmap, MT6370_REG_CHG_CTRL7, &reg_val); + if (ret) + return ret; + + reg_val = FIELD_GET(MT6370_AICR_ICHG_MASK, reg_val); + if (reg_val < MT6370_ICHG_500MA) + *val1 = 23750; + else if (reg_val >= MT6370_ICHG_500MA && + reg_val < MT6370_ICHG_900MA) + *val1 = 26800; + else + *val1 = 50000; + + return IIO_VAL_INT; + case MT6370_CHAN_VBUSDIV5: + *val1 = 25000; + return IIO_VAL_INT; + case MT6370_CHAN_VBUSDIV2: + *val1 = 50000; + return IIO_VAL_INT; + case MT6370_CHAN_TS_BAT: + *val1 = 25; + *val2 = 10000; + return IIO_VAL_FRACTIONAL; + case MT6370_CHAN_TEMP_JC: + *val1 = 2; + return IIO_VAL_INT; + } + + return -EINVAL; +} + +static int mt6370_adc_read_offset(struct mt6370_adc_data *priv, + int chan, int *val) +{ + *val = -20; + + return IIO_VAL_INT; +} + +static int mt6370_adc_read_raw(struct iio_dev *iio_dev, + const struct iio_chan_spec *chan, + int *val, int *val2, long mask) +{ + struct mt6370_adc_data *priv = iio_priv(iio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + return mt6370_adc_read_channel(priv, chan->channel, + chan->address, val); + case IIO_CHAN_INFO_SCALE: + return mt6370_adc_read_scale(priv, chan->channel, val, val2); + case IIO_CHAN_INFO_OFFSET: + return mt6370_adc_read_offset(priv, chan->channel, val); + } + + return -EINVAL; +} + +static const char * const mt6370_channel_labels[MT6370_CHAN_MAX] = { + [MT6370_CHAN_VBUSDIV5] = "vbusdiv5", + [MT6370_CHAN_VBUSDIV2] = "vbusdiv2", + [MT6370_CHAN_VSYS] = "vsys", + [MT6370_CHAN_VBAT] = "vbat", + [MT6370_CHAN_TS_BAT] = "ts_bat", + [MT6370_CHAN_IBUS] = "ibus", + [MT6370_CHAN_IBAT] = "ibat", + [MT6370_CHAN_CHG_VDDP] = "chg_vddp", + [MT6370_CHAN_TEMP_JC] = "temp_jc", +}; + +static int mt6370_adc_read_label(struct iio_dev *iio_dev, + struct iio_chan_spec const *chan, char *label) +{ + return snprintf(label, PAGE_SIZE, "%s\n", + mt6370_channel_labels[chan->channel]); +} + +static const struct iio_info mt6370_adc_iio_info = { + .read_raw = mt6370_adc_read_raw, + .read_label = mt6370_adc_read_label, +}; + +#define MT6370_ADC_CHAN(_idx, _type, _addr, _extra_info) { \ + .type = _type, \ + .channel = MT6370_CHAN_##_idx, \ + .address = _addr, \ + .scan_index = MT6370_CHAN_##_idx, \ + .indexed = 1, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_SCALE) | \ + _extra_info \ +} + +static const struct iio_chan_spec mt6370_adc_channels[] = { + MT6370_ADC_CHAN(VBUSDIV5, IIO_VOLTAGE, 1, 0), + MT6370_ADC_CHAN(VBUSDIV2, IIO_VOLTAGE, 2, 0), + MT6370_ADC_CHAN(VSYS, IIO_VOLTAGE, 3, 0), + MT6370_ADC_CHAN(VBAT, IIO_VOLTAGE, 4, 0), + MT6370_ADC_CHAN(TS_BAT, IIO_VOLTAGE, 6, 0), + MT6370_ADC_CHAN(IBUS, IIO_CURRENT, 8, 0), + MT6370_ADC_CHAN(IBAT, IIO_CURRENT, 9, 0), + MT6370_ADC_CHAN(CHG_VDDP, IIO_VOLTAGE, 11, 0), + MT6370_ADC_CHAN(TEMP_JC, IIO_TEMP, 12, BIT(IIO_CHAN_INFO_OFFSET)), +}; + +static int mt6370_adc_probe(struct platform_device *pdev) +{ + int ret; + struct mt6370_adc_data *priv; + struct regmap *regmap; + struct iio_dev *indio_dev; + + regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!regmap) { + dev_err(&pdev->dev, "Failed to get regmap\n"); + return -ENODEV; + } + + indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*priv)); + if (!indio_dev) + return -ENOMEM; + + priv = iio_priv(indio_dev); + priv->dev = &pdev->dev; + priv->regmap = regmap; + mutex_init(&priv->adc_lock); + + ret = regmap_write(priv->regmap, MT6370_REG_CHG_ADC, 0); + if (ret) { + dev_err(&pdev->dev, "Failed to reset adc\n"); + return ret; + } + + indio_dev->name = "mt6370-adc"; + indio_dev->info = &mt6370_adc_iio_info; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = mt6370_adc_channels; + indio_dev->num_channels = ARRAY_SIZE(mt6370_adc_channels); + + return devm_iio_device_register(&pdev->dev, indio_dev); +} + +static const struct of_device_id mt6370_adc_of_id[] = { + { .compatible = "mediatek,mt6370-adc", }, + {} +}; +MODULE_DEVICE_TABLE(of, mt6370_adc_of_id); + +static struct platform_driver mt6370_adc_driver = { + .driver = { + .name = "mt6370-adc", + .of_match_table = mt6370_adc_of_id, + }, + .probe = mt6370_adc_probe, +}; +module_platform_driver(mt6370_adc_driver); + +MODULE_AUTHOR("ChiaEn Wu chiaen_wu@richtek.com"); +MODULE_DESCRIPTION("MT6370 ADC Drvier"); +MODULE_LICENSE("GPL v2");

From: ChiaEn Wu chiaen_wu@richtek.com

Add Mediatek MT6370 charger driver.

Signed-off-by: ChiaEn Wu chiaen_wu@richtek.com --- drivers/power/supply/Kconfig | 11 + drivers/power/supply/Makefile | 1 + drivers/power/supply/mt6370-charger.c | 1132 +++++++++++++++++++++++++ 3 files changed, 1144 insertions(+) create mode 100644 drivers/power/supply/mt6370-charger.c

diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index 1aa8323ad9f6..54d8c3ab01cc 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -619,6 +619,17 @@ config CHARGER_MT6360 Average Input Current Regulation, Battery Temperature Sensing, Over-Temperature Protection, DPDM Detection for BC1.2.

+config CHARGER_MT6370 + tristate "Mediatek MT6370 Charger Driver" + depends on MFD_MT6370 + depends on REGULATOR + select LINEAR_RANGES + help + Say Y here to enable MT6370 Charger Part. + The device supports High-Accuracy Voltage/Current Regulation, + Average Input Current Regulation, Battery Temperature Sensing, + Over-Temperature Protection, DPDM Detection for BC1.2. + config CHARGER_QCOM_SMBB tristate "Qualcomm Switch-Mode Battery Charger and Boost" depends on MFD_SPMI_PMIC || COMPILE_TEST diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 7f02f36aea55..8c9527643c86 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -82,6 +82,7 @@ obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o obj-$(CONFIG_CHARGER_MAX8998) += max8998_charger.o obj-$(CONFIG_CHARGER_MP2629) += mp2629_charger.o obj-$(CONFIG_CHARGER_MT6360) += mt6360_charger.o +obj-$(CONFIG_CHARGER_MT6370) += mt6370-charger.o obj-$(CONFIG_CHARGER_QCOM_SMBB) += qcom_smbb.o obj-$(CONFIG_CHARGER_BQ2415X) += bq2415x_charger.o obj-$(CONFIG_CHARGER_BQ24190) += bq24190_charger.o diff --git a/drivers/power/supply/mt6370-charger.c b/drivers/power/supply/mt6370-charger.c new file mode 100644 index 000000000000..539da62df2db --- /dev/null +++ b/drivers/power/supply/mt6370-charger.c @@ -0,0 +1,1132 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <dt-bindings/iio/adc/mediatek,mt6370_adc.h> +#include <linux/atomic.h> +#include <linux/bitfield.h> +#include <linux/bits.h> +#include <linux/gpio/consumer.h> +#include <linux/iio/consumer.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/power_supply.h> +#include <linux/regmap.h> +#include <linux/regulator/driver.h> +#include <linux/workqueue.h> + +#define MT6370_REG_CHG_CTRL1 0x111 +#define MT6370_REG_CHG_CTRL2 0x112 +#define MT6370_REG_CHG_CTRL3 0x113 +#define MT6370_REG_CHG_CTRL4 0x114 +#define MT6370_REG_CHG_CTRL5 0x115 +#define MT6370_REG_CHG_CTRL6 0x116 +#define MT6370_REG_CHG_CTRL7 0x117 +#define MT6370_REG_CHG_CTRL8 0x118 +#define MT6370_REG_CHG_CTRL9 0x119 +#define MT6370_REG_CHG_CTRL10 0x11A +#define MT6370_REG_DEVICE_TYPE 0x122 +#define MT6370_REG_USB_STATUS1 0x127 +#define MT6370_REG_CHG_STAT 0x14A +#define MT6370_REG_FLED_EN 0x17E +#define MT6370_REG_CHG_STAT1 0X1D0 +#define MT6370_REG_OVPCTRL_STAT 0x1D8 + +#define MT6370_VOBST_MASK GENMASK(7, 2) +#define MT6370_OTG_PIN_EN_MASK BIT(1) +#define MT6370_OPA_MODE_MASK BIT(0) +#define MT6370_OTG_OC_MASK GENMASK(2, 0) + +#define MT6370_MIVR_IBUS_TH 100000 /* 100 mA */ + +enum mt6370_chg_reg_field { + /* MT6370_REG_CHG_CTRL2 */ + F_IINLMTSEL, F_CFO_EN, F_CHG_EN, + /* MT6370_REG_CHG_CTRL3 */ + F_IAICR, F_AICR_EN, F_ILIM_EN, + /* MT6370_REG_CHG_CTRL4 */ + F_VOREG, + /* MT6370_REG_CHG_CTRL5 */ + F_VOBST, + /* MT6370_REG_CHG_CTRL6 */ + F_VMIVR, + /* MT6370_REG_CHG_CTRL7 */ + F_ICHG, + /* MT6370_REG_CHG_CTRL8 */ + F_IPREC, + /* MT6370_REG_CHG_CTRL9 */ + F_IEOC, + /* MT6370_REG_DEVICE_TYPE */ + F_USBCHGEN, + /* MT6370_REG_USB_STATUS1 */ + F_USB_STAT, F_CHGDET, + /* MT6370_REG_CHG_STAT */ + F_CHG_STAT, F_BOOST_STAT, F_VBAT_LVL, + /* MT6370_REG_FLED_EN */ + F_FL_STROBE, + /* MT6370_REG_CHG_STAT1 */ + F_CHG_MIVR_STAT, + /* MT6370_REG_OVPCTRL_STAT */ + F_UVP_D_STAT, + F_MAX, +}; + +struct mt6370_priv { + struct device *dev; + struct iio_channel *iio_adcs; + struct mutex attach_lock; + struct power_supply *psy; + struct power_supply_desc *psy_desc; + struct regmap *regmap; + struct regmap_field *rmap_fields[F_MAX]; + struct regulator_dev *rdev; + struct workqueue_struct *wq; + struct work_struct bc12_work; + struct delayed_work mivr_dwork; + atomic_t attach; + int psy_usb_type; + bool pwr_rdy; +}; + +enum mt6370_usb_status { + MT6370_USB_STAT_NO_VBUS = 0, + MT6370_USB_STAT_VBUS_FLOW_IS_UNDER_GOING, + MT6370_USB_STAT_SDP, + MT6370_USB_STAT_SDP_NSTD, + MT6370_USB_STAT_DCP, + MT6370_USB_STAT_CDP, + MT6370_USB_STAT_MAX, +}; + +struct mt6370_chg_range { + u32 min; + u32 max; + u16 step; + u8 offset; + const u32 *table; + u16 num_table; + bool round_up; +}; + +struct mt6370_chg_field { + const char *name; + const struct mt6370_chg_range *range; + struct reg_field field; +}; + +static const u32 mt6370_chg_otg_oc_ma[] = { + 500000, 700000, 1100000, 1300000, 1800000, 2100000, 2400000, +}; + +#define MT6370_CHG_RANGE(_min, _max, _step, _offset, _ru) \ +{ \ + .min = _min, \ + .max = _max, \ + .step = _step, \ + .offset = _offset, \ + .round_up = _ru, \ +} + +#define MT6370_CHG_RANGE_T(_table, _ru) \ +{ \ + .table = _table, \ + .num_table = ARRAY_SIZE(_table), \ + .round_up = _ru, \ +} + +static const struct mt6370_chg_range mt6370_chg_ranges[F_MAX] = { + [F_IAICR] = MT6370_CHG_RANGE(100, 3250, 50, 0, false), + [F_VOREG] = MT6370_CHG_RANGE(3900, 4710, 10, 0, false), + [F_VOBST] = MT6370_CHG_RANGE(4425, 5825, 25, 0, false), + [F_VMIVR] = MT6370_CHG_RANGE(3900, 13400, 100, 0, true), + [F_ICHG] = MT6370_CHG_RANGE(900, 5000, 100, 8, false), + [F_IPREC] = MT6370_CHG_RANGE(100, 850, 50, 0, false), + [F_IEOC] = MT6370_CHG_RANGE(100, 850, 50, 0, false), +}; + +#define MT6370_CHG_FIELD_RANGE(_fd, _reg, _lsb, _msb, _range) \ +[_fd] = { \ + .name = #_fd, \ + .range = _range ? &mt6370_chg_ranges[_fd] : NULL, \ + .field = REG_FIELD(_reg, _lsb, _msb), \ +} + +#define MT6370_CHG_FIELD(_fd, _reg, _lsb, _msb) \ + MT6370_CHG_FIELD_RANGE(_fd, _reg, _lsb, _msb, (_msb > _lsb)) + +static const struct mt6370_chg_field mt6370_chg_fields[F_MAX] = { + MT6370_CHG_FIELD_RANGE(F_IINLMTSEL, MT6370_REG_CHG_CTRL2, 2, 3, false), + MT6370_CHG_FIELD(F_CFO_EN, MT6370_REG_CHG_CTRL2, 1, 1), + MT6370_CHG_FIELD(F_CHG_EN, MT6370_REG_CHG_CTRL2, 0, 0), + MT6370_CHG_FIELD(F_IAICR, MT6370_REG_CHG_CTRL3, 2, 7), + MT6370_CHG_FIELD(F_AICR_EN, MT6370_REG_CHG_CTRL3, 1, 1), + MT6370_CHG_FIELD(F_ILIM_EN, MT6370_REG_CHG_CTRL3, 0, 0), + MT6370_CHG_FIELD(F_VOREG, MT6370_REG_CHG_CTRL4, 1, 7), + MT6370_CHG_FIELD(F_VOBST, MT6370_REG_CHG_CTRL5, 2, 7), + MT6370_CHG_FIELD(F_VMIVR, MT6370_REG_CHG_CTRL6, 1, 7), + MT6370_CHG_FIELD(F_ICHG, MT6370_REG_CHG_CTRL7, 2, 7), + MT6370_CHG_FIELD(F_IPREC, MT6370_REG_CHG_CTRL8, 0, 3), + MT6370_CHG_FIELD(F_IEOC, MT6370_REG_CHG_CTRL9, 4, 7), + MT6370_CHG_FIELD(F_USBCHGEN, MT6370_REG_DEVICE_TYPE, 7, 7), + MT6370_CHG_FIELD_RANGE(F_USB_STAT, MT6370_REG_USB_STATUS1, 4, 6, false), + MT6370_CHG_FIELD(F_CHGDET, MT6370_REG_USB_STATUS1, 3, 3), + MT6370_CHG_FIELD_RANGE(F_CHG_STAT, MT6370_REG_CHG_STAT, 6, 7, false), + MT6370_CHG_FIELD(F_BOOST_STAT, MT6370_REG_CHG_STAT, 3, 3), + MT6370_CHG_FIELD(F_VBAT_LVL, MT6370_REG_CHG_STAT, 5, 5), + MT6370_CHG_FIELD(F_FL_STROBE, MT6370_REG_FLED_EN, 2, 2), + MT6370_CHG_FIELD(F_CHG_MIVR_STAT, MT6370_REG_CHG_STAT1, 6, 6), + MT6370_CHG_FIELD(F_UVP_D_STAT, MT6370_REG_OVPCTRL_STAT, 4, 4), +}; + +static inline u32 mt6370_chg_val_to_reg(const struct mt6370_chg_range *range, + u32 val) +{ + int i; + u8 reg; + + if (!range) + return val; + + if (range->table) { + if (val <= range->table[0]) + return 0; + + for (i = 1; i < range->num_table - 1; i++) { + if (val == range->table[i]) + return i; + if (val > range->table[i] && + val < range->table[i + 1]) + return range->round_up ? i + 1 : i; + } + + return range->num_table - 1; + } + + if (val <= range->min) + reg = 0; + else if (val >= range->max) + reg = (range->max - range->min) / range->step; + else if (range->round_up) + reg = DIV_ROUND_UP(val - range->min, range->step); + else + reg = (val - range->min) / range->step; + + return reg + range->offset; +} + +static inline u32 mt6370_chg_reg_to_val(const struct mt6370_chg_range *range, + u8 reg) +{ + if (!range) + return reg; + + return range->table ? range->table[reg] : + range->min + range->step * (reg - range->offset); +} + +static inline int mt6370_chg_field_get(struct mt6370_priv *priv, + enum mt6370_chg_reg_field fd, u32 *val) +{ + int ret; + u32 reg_val; + + ret = regmap_field_read(priv->rmap_fields[fd], &reg_val); + if (ret < 0) + return ret; + + *val = mt6370_chg_reg_to_val(mt6370_chg_fields[fd].range, reg_val); + + return 0; +} + +static inline int mt6370_chg_field_set(struct mt6370_priv *priv, + enum mt6370_chg_reg_field fd, u32 val) +{ + val = mt6370_chg_val_to_reg(mt6370_chg_fields[fd].range, val); + + return regmap_field_write(priv->rmap_fields[fd], val); +} + +enum { + MT6370_CHG_STAT_READY = 0, + MT6370_CHG_STAT_CHARGE_IN_PROGRESS, + MT6370_CHG_STAT_DONE, + MT6370_CHG_STAT_FAULT, + MT6370_CHG_STAT_MAX, +}; + +enum { + MT6370_ATTACH_STAT_DETACH = 0, + MT6370_ATTACH_STAT_ATTACH_BC12_NOT_DONE, + MT6370_ATTACH_STAT_ATTACH_BC12_DONE, + MT6370_ATTACH_STAT_ATTACH_MAX, +}; + +static int mt6370_chg_otg_of_parse_cb(struct device_node *of, + const struct regulator_desc *rdesc, + struct regulator_config *rcfg) +{ + struct mt6370_priv *priv = rcfg->driver_data; + unsigned int val; + int ret = 0; + + rcfg->ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(of), + "enable", 0, + GPIOD_OUT_LOW | + GPIOD_FLAGS_BIT_NONEXCLUSIVE, + rdesc->name); + if (IS_ERR(rcfg->ena_gpiod)) { + dev_err(priv->dev, "Failed to requeset OTG EN Pin\n"); + rcfg->ena_gpiod = NULL; + } else { + val = MT6370_OPA_MODE_MASK | MT6370_OTG_PIN_EN_MASK; + ret = regmap_update_bits(priv->regmap, MT6370_REG_CHG_CTRL1, + val, val); + if (ret) + dev_err(priv->dev, "Failed to set otg bits\n"); + } + + return ret; +} + +static void mt6370_chg_bc12_work_func(struct work_struct *work) +{ + struct mt6370_priv *priv = container_of(work, struct mt6370_priv, + bc12_work); + int ret, attach; + bool rpt_psy = false; + u32 usb_stat; + + mutex_lock(&priv->attach_lock); + attach = atomic_read(&priv->attach); + + switch (attach) { + case MT6370_ATTACH_STAT_DETACH: + usb_stat = 0; + break; + case MT6370_ATTACH_STAT_ATTACH_BC12_DONE: + ret = mt6370_chg_field_get(priv, F_USB_STAT, &usb_stat); + if (ret < 0) { + dev_err(priv->dev, "Failed to get USB status\n"); + goto bc12_work_func_out; + } + break; + case MT6370_ATTACH_STAT_ATTACH_BC12_NOT_DONE: + ret = mt6370_chg_field_set(priv, F_USBCHGEN, attach); + if (ret < 0) + dev_err(priv->dev, "Failed to enable USB CHG EN\n"); + goto bc12_work_func_out; + default: + dev_err(priv->dev, "Invalid attach state\n"); + goto bc12_work_func_out; + } + + rpt_psy = true; + + switch (usb_stat) { + case MT6370_USB_STAT_SDP: + priv->psy_desc->type = POWER_SUPPLY_TYPE_USB; + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP; + break; + case MT6370_USB_STAT_SDP_NSTD: + priv->psy_desc->type = POWER_SUPPLY_TYPE_USB; + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP; + break; + case MT6370_USB_STAT_DCP: + priv->psy_desc->type = POWER_SUPPLY_TYPE_USB_DCP; + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP; + break; + case MT6370_USB_STAT_CDP: + priv->psy_desc->type = POWER_SUPPLY_TYPE_USB_CDP; + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP; + break; + case MT6370_USB_STAT_NO_VBUS: + case MT6370_USB_STAT_VBUS_FLOW_IS_UNDER_GOING: + default: + priv->psy_desc->type = POWER_SUPPLY_TYPE_USB; + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN; + break; + } + +bc12_work_func_out: + mutex_unlock(&priv->attach_lock); + + if (rpt_psy) + power_supply_changed(priv->psy); +} + +static inline void mt6370_chg_enable_irq(struct mt6370_priv *priv, + const char *irq_name, bool en) +{ + int irq_num; + struct platform_device *pdev = to_platform_device(priv->dev); + + irq_num = platform_get_irq_byname(pdev, irq_name); + + if (irq_num < 0) { + dev_err(priv->dev, "Failed to get platform resource\n"); + } else { + if (en) + enable_irq(irq_num); + else + disable_irq_nosync(irq_num); + } +} + +static int mt6370_chg_toggle_cfo(struct mt6370_priv *priv) +{ + int ret; + u32 fl_strobe; + + /* check if flash led in strobe mode */ + ret = mt6370_chg_field_get(priv, F_FL_STROBE, &fl_strobe); + if (ret < 0) { + dev_err(priv->dev, "Failed to get FL_STROBE_EN\n"); + goto toggle_cfo_exit; + } + + if (fl_strobe) { + dev_err(priv->dev, "Flash led is still in strobe mode\n"); + goto toggle_cfo_exit; + } + + /* cfo off */ + ret = mt6370_chg_field_set(priv, F_CFO_EN, 0); + if (ret < 0) { + dev_err(priv->dev, "Failed to disable CFO_EN\n"); + goto toggle_cfo_exit; + } + + /* cfo on */ + ret = mt6370_chg_field_set(priv, F_CFO_EN, 1); + if (ret < 0) { + dev_err(priv->dev, "Failed to enable CFO_EN\n"); + goto toggle_cfo_exit; + } + +toggle_cfo_exit: + return ret; +} + +static int mt6370_chg_read_adc_chan(struct mt6370_priv *priv, unsigned int chan, + int *val) +{ + int ret; + + if (chan >= MT6370_CHAN_MAX) + return -EINVAL; + + ret = iio_read_channel_processed(&priv->iio_adcs[chan], val); + if (ret) + dev_err(priv->dev, "Failed to read adc\n"); + + return ret; +} + +static void mt6370_chg_mivr_dwork_func(struct work_struct *work) +{ + struct mt6370_priv *priv = container_of(work, struct mt6370_priv, + mivr_dwork.work); + int ret; + u32 mivr_stat; + unsigned int ibus; + + ret = mt6370_chg_field_get(priv, F_CHG_MIVR_STAT, &mivr_stat); + if (ret < 0) { + dev_err(priv->dev, "Failed to get mivr state\n"); + goto mivr_handler_out; + } + + if (!mivr_stat) + goto mivr_handler_out; + + ret = mt6370_chg_read_adc_chan(priv, MT6370_CHAN_IBUS, &ibus); + if (ret) { + dev_err(priv->dev, "Failed to get ibus\n"); + goto mivr_handler_out; + } + + if (ibus < MT6370_MIVR_IBUS_TH) { + ret = mt6370_chg_toggle_cfo(priv); + if (ret) + dev_err(priv->dev, "Failed to toggle cfo\n"); + } + +mivr_handler_out: + mt6370_chg_enable_irq(priv, "mivr", true); + pm_relax(priv->dev); +} + +static void mt6370_chg_pwr_rdy_check(struct mt6370_priv *priv) +{ + int ret; + u32 pwr_rdy, otg_en; + union power_supply_propval val; + + /* Check in otg mode or not */ + ret = mt6370_chg_field_get(priv, F_BOOST_STAT, &otg_en); + if (ret < 0) { + dev_err(priv->dev, "Failed to get otg state\n"); + return; + } + + if (otg_en) + return; + + ret = mt6370_chg_field_get(priv, F_UVP_D_STAT, &pwr_rdy); + if (ret < 0) { + dev_err(priv->dev, "Failed to get pwr_rdy state reg\n"); + return; + } + + val.intval = !pwr_rdy; + + ret = power_supply_set_property(priv->psy, POWER_SUPPLY_PROP_ONLINE, + &val); + if (ret) + dev_err(priv->dev, "Failed to start attach/detach flow\n"); +} + +static int mt6370_chg_get_online(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + mutex_lock(&priv->attach_lock); + val->intval = !!atomic_read(&priv->attach); + mutex_unlock(&priv->attach_lock); + + return 0; +} + +static int mt6370_chg_get_status(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + int ret; + u32 chg_stat; + + ret = mt6370_chg_get_online(priv, val); + if (!val->intval) { + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; + return 0; + } + + ret = mt6370_chg_field_get(priv, F_CHG_STAT, &chg_stat); + if (ret < 0) + return ret; + + switch (chg_stat) { + case MT6370_CHG_STAT_READY: + case MT6370_CHG_STAT_FAULT: + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + break; + case MT6370_CHG_STAT_CHARGE_IN_PROGRESS: + val->intval = POWER_SUPPLY_STATUS_CHARGING; + break; + case MT6370_CHG_STAT_DONE: + val->intval = POWER_SUPPLY_STATUS_FULL; + break; + default: + val->intval = POWER_SUPPLY_STATUS_UNKNOWN; + break; + } + + return ret; +} + +static int mt6370_chg_get_charge_type(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + int type, ret; + u32 chg_stat, vbat_lvl; + + ret = mt6370_chg_field_get(priv, F_CHG_STAT, &chg_stat); + if (ret < 0) + return ret; + + ret = mt6370_chg_field_get(priv, F_VBAT_LVL, &vbat_lvl); + if (ret < 0) + return ret; + + switch (chg_stat) { + case MT6370_CHG_STAT_CHARGE_IN_PROGRESS: + if (vbat_lvl) + type = POWER_SUPPLY_CHARGE_TYPE_FAST; + else + type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; + break; + case MT6370_CHG_STAT_READY: + case MT6370_CHG_STAT_DONE: + case MT6370_CHG_STAT_FAULT: + default: + type = POWER_SUPPLY_CHARGE_TYPE_NONE; + break; + } + + val->intval = type; + + return 0; +} + +static int mt6370_chg_get_ichg(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + return mt6370_chg_field_get(priv, F_ICHG, &val->intval); +} + +static int mt6370_chg_get_max_ichg(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + return mt6370_chg_ranges[F_ICHG].max; +} + +static int mt6370_chg_get_cv(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + return mt6370_chg_field_get(priv, F_VOREG, &val->intval); +} + +static int mt6370_chg_get_max_cv(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + return mt6370_chg_ranges[F_VOREG].max; +} + +static int mt6370_chg_get_aicr(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + return mt6370_chg_field_get(priv, F_IAICR, &val->intval); +} + +static int mt6370_chg_get_mivr(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + return mt6370_chg_field_get(priv, F_VMIVR, &val->intval); +} + +static int mt6370_chg_get_iprechg(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + return mt6370_chg_field_get(priv, F_IPREC, &val->intval); +} + +static int mt6370_chg_get_ieoc(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + return mt6370_chg_field_get(priv, F_IEOC, &val->intval); +} + +static int mt6370_chg_set_online(struct mt6370_priv *priv, + const union power_supply_propval *val) +{ + int attach; + u32 pwr_rdy = !!val->intval; + + mutex_lock(&priv->attach_lock); + attach = atomic_read(&priv->attach); + if (pwr_rdy == !!attach) { + dev_err(priv->dev, "pwr_rdy is same(%d)\n", pwr_rdy); + mutex_unlock(&priv->attach_lock); + return 0; + } + + atomic_set(&priv->attach, pwr_rdy); + mutex_unlock(&priv->attach_lock); + + if (!queue_work(priv->wq, &priv->bc12_work)) + dev_err(priv->dev, "bc12 work has already queued\n"); + + return 0; + +} + +static int mt6370_chg_set_ichg(struct mt6370_priv *priv, + const union power_supply_propval *val) +{ + return mt6370_chg_field_set(priv, F_ICHG, val->intval); +} + +static int mt6370_chg_set_cv(struct mt6370_priv *priv, + const union power_supply_propval *val) +{ + return mt6370_chg_field_set(priv, F_VOREG, val->intval); +} + +static int mt6370_chg_set_aicr(struct mt6370_priv *priv, + const union power_supply_propval *val) +{ + return mt6370_chg_field_set(priv, F_IAICR, val->intval); +} + +static int mt6370_chg_set_mivr(struct mt6370_priv *priv, + const union power_supply_propval *val) +{ + return mt6370_chg_field_set(priv, F_VMIVR, val->intval); +} + +static int mt6370_chg_set_iprechg(struct mt6370_priv *priv, + const union power_supply_propval *val) +{ + return mt6370_chg_field_set(priv, F_IPREC, val->intval); +} + +static int mt6370_chg_set_ieoc(struct mt6370_priv *priv, + const union power_supply_propval *val) +{ + return mt6370_chg_field_set(priv, F_IEOC, val->intval); +} + +static int mt6370_chg_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct mt6370_priv *priv = power_supply_get_drvdata(psy); + int ret = 0; + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + ret = mt6370_chg_get_online(priv, val); + break; + case POWER_SUPPLY_PROP_STATUS: + ret = mt6370_chg_get_status(priv, val); + break; + case POWER_SUPPLY_PROP_CHARGE_TYPE: + ret = mt6370_chg_get_charge_type(priv, val); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + ret = mt6370_chg_get_ichg(priv, val); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + ret = mt6370_chg_get_max_ichg(priv, val); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = mt6370_chg_get_cv(priv, val); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + ret = mt6370_chg_get_max_cv(priv, val); + break; + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = mt6370_chg_get_aicr(priv, val); + break; + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + ret = mt6370_chg_get_mivr(priv, val); + break; + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + ret = mt6370_chg_get_iprechg(priv, val); + break; + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + ret = mt6370_chg_get_ieoc(priv, val); + break; + case POWER_SUPPLY_PROP_TYPE: + val->intval = priv->psy_desc->type; + break; + case POWER_SUPPLY_PROP_USB_TYPE: + val->intval = priv->psy_usb_type; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int mt6370_chg_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct mt6370_priv *priv = power_supply_get_drvdata(psy); + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + ret = mt6370_chg_set_online(priv, val); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + ret = mt6370_chg_set_ichg(priv, val); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = mt6370_chg_set_cv(priv, val); + break; + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = mt6370_chg_set_aicr(priv, val); + break; + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + ret = mt6370_chg_set_mivr(priv, val); + break; + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + ret = mt6370_chg_set_iprechg(priv, val); + break; + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + ret = mt6370_chg_set_ieoc(priv, val); + break; + default: + ret = -EINVAL; + } + return ret; +} + +static int mt6370_chg_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + return 1; + default: + return 0; + } +} + +static enum power_supply_property mt6370_chg_properties[] = { + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_CHARGE_TYPE, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT, + POWER_SUPPLY_PROP_PRECHARGE_CURRENT, + POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, + POWER_SUPPLY_PROP_TYPE, + POWER_SUPPLY_PROP_USB_TYPE, +}; + +static enum power_supply_usb_type mt6370_chg_usb_types[] = { + POWER_SUPPLY_USB_TYPE_UNKNOWN, + POWER_SUPPLY_USB_TYPE_SDP, + POWER_SUPPLY_USB_TYPE_CDP, + POWER_SUPPLY_USB_TYPE_DCP, +}; + +static struct power_supply_desc mt6370_chg_psy_desc = { + .type = POWER_SUPPLY_TYPE_USB, + .properties = mt6370_chg_properties, + .num_properties = ARRAY_SIZE(mt6370_chg_properties), + .get_property = mt6370_chg_get_property, + .set_property = mt6370_chg_set_property, + .property_is_writeable = mt6370_chg_property_is_writeable, + .usb_types = mt6370_chg_usb_types, + .num_usb_types = ARRAY_SIZE(mt6370_chg_usb_types), +}; + +static const struct regulator_ops mt6370_chg_otg_ops = { + .list_voltage = regulator_list_voltage_linear, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_current_limit = regulator_set_current_limit_regmap, + .get_current_limit = regulator_get_current_limit_regmap, +}; + +static const struct regulator_desc mt6370_chg_otg_rdesc = { + .of_match = "usb-otg-vbus-regulator", + .of_parse_cb = mt6370_chg_otg_of_parse_cb, + .name = "mt6370-usb-otg-vbus", + .ops = &mt6370_chg_otg_ops, + .owner = THIS_MODULE, + .type = REGULATOR_VOLTAGE, + .min_uV = 4425000, + .uV_step = 25000, + .n_voltages = 57, + .vsel_reg = MT6370_REG_CHG_CTRL5, + .vsel_mask = MT6370_VOBST_MASK, + .enable_reg = MT6370_REG_CHG_CTRL1, + .enable_mask = MT6370_OPA_MODE_MASK, + .curr_table = mt6370_chg_otg_oc_ma, + .n_current_limits = ARRAY_SIZE(mt6370_chg_otg_oc_ma), + .csel_reg = MT6370_REG_CHG_CTRL10, + .csel_mask = MT6370_OTG_OC_MASK, +}; + +static int mt6370_chg_init_rmap_fields(struct mt6370_priv *priv) +{ + int i; + const struct mt6370_chg_field *fds = mt6370_chg_fields; + + for (i = 0; i < F_MAX; i++) { + priv->rmap_fields[i] = devm_regmap_field_alloc(priv->dev, + priv->regmap, + fds[i].field); + if (IS_ERR(priv->rmap_fields[i])) { + dev_err(priv->dev, + "Failed to allocate regmap field [%s]\n", + fds[i].name); + return PTR_ERR(priv->rmap_fields[i]); + } + } + + return 0; +} + +static int mt6370_chg_init_setting(struct mt6370_priv *priv) +{ + int ret; + + priv->wq = create_singlethread_workqueue(dev_name(priv->dev)); + if (IS_ERR(priv->wq)) { + dev_err(priv->dev, "Failed to create workqueue\n"); + return PTR_ERR(priv->wq); + } + + INIT_WORK(&priv->bc12_work, mt6370_chg_bc12_work_func); + INIT_DELAYED_WORK(&priv->mivr_dwork, mt6370_chg_mivr_dwork_func); + mutex_init(&priv->attach_lock); + atomic_set(&priv->attach, 0); + + /* Disable usb_chg_en */ + ret = mt6370_chg_field_set(priv, F_USBCHGEN, 0); + if (ret < 0) { + dev_err(priv->dev, "Failed to disable usb_chg_en\n"); + return ret; + } + + /* ICHG/IEOC Workaroud, ICHG can not be set less than 900mA */ + ret = mt6370_chg_field_set(priv, F_ICHG, 900); + if (ret < 0) { + dev_err(priv->dev, "Failed to set ICHG to 900mA"); + return ret; + } + + /* Change input current limit selection to using IAICR results */ + ret = mt6370_chg_field_set(priv, F_IINLMTSEL, 3); + if (ret < 0) { + dev_err(priv->dev, "Failed to set IINLMTSEL\n"); + return ret; + } + + return 0; +} + +#define MT6370_CHG_DT_PROP_DECL(_name, _type, _field) \ +{ \ + .name = "mediatek,chg-" #_name, \ + .type = MT6370_PARSE_TYPE_##_type, \ + .fd = _field, \ +} + +static int mt6370_chg_init_otg_regulator(struct mt6370_priv *priv) +{ + struct regulator_config rcfg = { + .dev = priv->dev, + .regmap = priv->regmap, + .driver_data = priv, + }; + + priv->rdev = devm_regulator_register(priv->dev, &mt6370_chg_otg_rdesc, + &rcfg); + + return IS_ERR(priv->rdev) ? PTR_ERR(priv->rdev) : 0; +} + +static int mt6370_chg_init_psy(struct mt6370_priv *priv) +{ + struct power_supply_config cfg = { + .drv_data = priv, + .of_node = priv->dev->of_node, + }; + + priv->psy_desc = &mt6370_chg_psy_desc; + priv->psy_desc->name = dev_name(priv->dev); + priv->psy = devm_power_supply_register(priv->dev, priv->psy_desc, &cfg); + + return IS_ERR(priv->psy) ? PTR_ERR(priv->psy) : 0; +} + +static irqreturn_t mt6370_attach_i_handler(int irq, void *data) +{ + struct mt6370_priv *priv = data; + u32 otg_en; + int ret; + + /* Check in otg mode or not */ + ret = mt6370_chg_field_get(priv, F_BOOST_STAT, &otg_en); + if (ret < 0) { + dev_err(priv->dev, "failed to get otg state\n"); + return IRQ_HANDLED; + } + + if (otg_en) + return IRQ_HANDLED; + + mutex_lock(&priv->attach_lock); + atomic_set(&priv->attach, MT6370_ATTACH_STAT_ATTACH_BC12_DONE); + mutex_unlock(&priv->attach_lock); + + if (!queue_work(priv->wq, &priv->bc12_work)) + dev_err(priv->dev, "bc12 work has already queued\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t mt6370_uvp_d_evt_handler(int irq, void *data) +{ + struct mt6370_priv *priv = data; + + mt6370_chg_pwr_rdy_check(priv); + + return IRQ_HANDLED; +} + +static irqreturn_t mt6370_mivr_handler(int irq, void *data) +{ + struct mt6370_priv *priv = data; + + pm_stay_awake(priv->dev); + mt6370_chg_enable_irq(priv, "mivr", false); + schedule_delayed_work(&priv->mivr_dwork, msecs_to_jiffies(200)); + + return IRQ_HANDLED; +} + +#define MT6370_CHG_IRQ(_name) \ +{ \ + .name = #_name, \ + .handler = mt6370_##_name##_handler, \ +} + +static int mt6370_chg_init_irq(struct mt6370_priv *priv) +{ + int i, ret; + const struct { + char *name; + irq_handler_t handler; + } mt6370_chg_irqs[] = { + MT6370_CHG_IRQ(attach_i), + MT6370_CHG_IRQ(uvp_d_evt), + MT6370_CHG_IRQ(mivr), + }; + + for (i = 0; i < ARRAY_SIZE(mt6370_chg_irqs); i++) { + ret = platform_get_irq_byname(to_platform_device(priv->dev), + mt6370_chg_irqs[i].name); + if (ret < 0) { + dev_err(priv->dev, "Failed to get irq %s\n", + mt6370_chg_irqs[i].name); + return ret; + } + + ret = devm_request_threaded_irq(priv->dev, ret, NULL, + mt6370_chg_irqs[i].handler, + IRQF_TRIGGER_FALLING, + dev_name(priv->dev), + priv); + + if (ret < 0) { + dev_err(priv->dev, "Failed to request irq %s\n", + mt6370_chg_irqs[i].name); + return ret; + } + } + + return 0; +} + +static int mt6370_chg_probe(struct platform_device *pdev) +{ + int ret; + struct mt6370_priv *priv; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = &pdev->dev; + + priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!priv->regmap) { + dev_err(&pdev->dev, "Failed to get regmap\n"); + return -ENODEV; + } + + ret = mt6370_chg_init_rmap_fields(priv); + if (ret) { + dev_err(&pdev->dev, "Failed to init regmap fields\n"); + return ret; + } + + platform_set_drvdata(pdev, priv); + + priv->iio_adcs = devm_iio_channel_get_all(priv->dev); + if (IS_ERR(priv->iio_adcs)) { + dev_err(&pdev->dev, "Failed to get iio adc\n"); + return PTR_ERR(priv->iio_adcs); + } + + ret = mt6370_chg_init_otg_regulator(priv); + if (ret) { + dev_err(&pdev->dev, "Failed to init otg regulator\n"); + return ret; + } + + ret = mt6370_chg_init_psy(priv); + if (ret) { + dev_err(&pdev->dev, "Failed to init psy\n"); + return ret; + } + + ret = mt6370_chg_init_setting(priv); + if (ret) { + dev_err(&pdev->dev, "Failed to init mt6370 private data\n"); + goto probe_out; + } + + ret = mt6370_chg_init_irq(priv); + if (ret) { + dev_err(&pdev->dev, "Failed to init irq\n"); + goto probe_out; + } + + mt6370_chg_pwr_rdy_check(priv); + + return 0; + +probe_out: + destroy_workqueue(priv->wq); + mutex_destroy(&priv->attach_lock); + + return ret; +} + +static int mt6370_chg_remove(struct platform_device *pdev) +{ + struct mt6370_priv *priv = platform_get_drvdata(pdev); + + if (priv) { + mt6370_chg_enable_irq(priv, "mivr", false); + cancel_delayed_work_sync(&priv->mivr_dwork); + destroy_workqueue(priv->wq); + mutex_destroy(&priv->attach_lock); + } + + return 0; +} + +static const struct of_device_id mt6370_chg_of_match[] = { + { .compatible = "mediatek,mt6370-charger", }, + {} +}; +MODULE_DEVICE_TABLE(of, mt6370_chg_of_match); + +static struct platform_driver mt6370_chg_driver = { + .probe = mt6370_chg_probe, + .remove = mt6370_chg_remove, + .driver = { + .name = "mt6370-charger", + .of_match_table = of_match_ptr(mt6370_chg_of_match), + }, +}; +module_platform_driver(mt6370_chg_driver); + +MODULE_AUTHOR("ChiaEn Wu chiaen_wu@richtek.com"); +MODULE_DESCRIPTION("Mediatek MT6370 Charger Driver"); +MODULE_LICENSE("GPL v2");

From: ChiaEn Wu chiaen_wu@richtek.com

Add Mediatek MT6370 Backlight support.

Signed-off-by: ChiaEn Wu chiaen_wu@richtek.com --- drivers/video/backlight/Kconfig | 9 + drivers/video/backlight/Makefile | 1 + drivers/video/backlight/mt6370-backlight.c | 339 +++++++++++++++++++++ 3 files changed, 349 insertions(+) create mode 100644 drivers/video/backlight/mt6370-backlight.c

diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig index a003e02e13ce..ec1589ad88bb 100644 --- a/drivers/video/backlight/Kconfig +++ b/drivers/video/backlight/Kconfig @@ -268,6 +268,15 @@ config BACKLIGHT_MAX8925 If you have a LCD backlight connected to the WLED output of MAX8925 WLED output, say Y here to enable this driver.

+config BACKLIGHT_MT6370 + tristate "Mediatek MT6370 Backlight Driver" + depends on MFD_MT6370 + help + This enables support for Mediatek MT6370 Backlight driver. + It's commonly used to drive the display WLED. There're 4 channels + inisde, and each channel supports up to 30mA of current capability + with 2048 current steps in exponential or linear mapping curves. + config BACKLIGHT_APPLE tristate "Apple Backlight Driver" depends on X86 && ACPI diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile index cae2c83422ae..e815f3f1deff 100644 --- a/drivers/video/backlight/Makefile +++ b/drivers/video/backlight/Makefile @@ -44,6 +44,7 @@ obj-$(CONFIG_BACKLIGHT_LP855X) += lp855x_bl.o obj-$(CONFIG_BACKLIGHT_LP8788) += lp8788_bl.o obj-$(CONFIG_BACKLIGHT_LV5207LP) += lv5207lp.o obj-$(CONFIG_BACKLIGHT_MAX8925) += max8925_bl.o +obj-$(CONFIG_BACKLIGHT_MT6370) += mt6370-backlight.o obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o obj-$(CONFIG_BACKLIGHT_PANDORA) += pandora_bl.o obj-$(CONFIG_BACKLIGHT_PCF50633) += pcf50633-backlight.o diff --git a/drivers/video/backlight/mt6370-backlight.c b/drivers/video/backlight/mt6370-backlight.c new file mode 100644 index 000000000000..a443c677cb7e --- /dev/null +++ b/drivers/video/backlight/mt6370-backlight.c @@ -0,0 +1,339 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/backlight.h> +#include <linux/bitfield.h> +#include <linux/bits.h> +#include <linux/gpio/consumer.h> +#include <linux/gpio/driver.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +#define MT6370_REG_DEV_INFO 0x100 +#define MT6370_REG_BL_EN 0x1A0 +#define MT6370_REG_BL_BSTCTRL 0x1A1 +#define MT6370_REG_BL_PWM 0x1A2 +#define MT6370_REG_BL_DIM2 0x1A4 + +#define MT6370_VENID_MASK GENMASK(7, 4) +#define MT6370_BL_EXT_EN_MASK BIT(7) +#define MT6370_BL_EN_MASK BIT(6) +#define MT6370_BL_CONFIG_MASK BIT(0) +#define MT6370_BL_CH_MASK GENMASK(5, 2) +#define MT6370_BL_DIM2_MASK GENMASK(2, 0) +#define MT6370_BL_DUMMY_6372_MASK GENMASK(2, 0) +#define MT6370_BL_DIM2_6372_SHIFT 3 +#define MT6370_BL_PWM_EN_MASK BIT(7) +#define MT6370_BL_PWM_HYS_EN_MASK BIT(2) +#define MT6370_BL_PWM_HYS_SEL_MASK GENMASK(1, 0) +#define MT6370_BL_OVP_EN_MASK BIT(7) +#define MT6370_BL_OVP_SEL_MASK GENMASK(6, 5) +#define MT6370_BL_OC_EN_MASK BIT(3) +#define MT6370_BL_OC_SEL_MASK GENMASK(2, 1) + +#define MT6370_BL_MAX_BRIGHTNESS 2048 +#define MT6370_BL_MAX_CH 15 + +enum { + MT6370_VID_COMMON = 0, + MT6370_VID_6372, +}; + +struct mt6370_priv { + int vid_type; + struct backlight_device *bl; + struct device *dev; + struct gpio_desc *enable_gpio; + struct regmap *regmap; +}; + +static int mt6370_bl_update_status(struct backlight_device *bl_dev) +{ + struct mt6370_priv *priv = bl_get_data(bl_dev); + int brightness = backlight_get_brightness(bl_dev); + unsigned int enable_val; + u8 brightness_val[2]; + int ret; + + if (brightness) { + brightness_val[0] = (brightness - 1) & MT6370_BL_DIM2_MASK; + brightness_val[1] = (brightness - 1) + >> fls(MT6370_BL_DIM2_MASK); + + /* + * To make MT6372 using 14 bits to control the brightness + * backward compatible with 11 bits brightness control + * (like MT6370 and MT6371 do), we left shift the value + * and pad with 1 to remaining bits. Hence, the MT6372's + * backlight brightness will be almost the same as MT6370's + * and MT6371's. + */ + if (priv->vid_type == MT6370_VID_6372) { + brightness_val[0] <<= MT6370_BL_DIM2_6372_SHIFT; + brightness_val[0] |= MT6370_BL_DUMMY_6372_MASK; + } + + ret = regmap_raw_write(priv->regmap, MT6370_REG_BL_DIM2, + brightness_val, sizeof(brightness_val)); + if (ret) + return ret; + } + + if (priv->enable_gpio) + gpiod_set_value(priv->enable_gpio, brightness ? 1 : 0); + + enable_val = brightness ? MT6370_BL_EN_MASK : 0; + return regmap_update_bits(priv->regmap, MT6370_REG_BL_EN, + MT6370_BL_EN_MASK, enable_val); +} + +static int mt6370_bl_get_brightness(struct backlight_device *bl_dev) +{ + struct mt6370_priv *priv = bl_get_data(bl_dev); + unsigned int enable; + u8 brightness_val[2]; + int brightness, ret; + + ret = regmap_read(priv->regmap, MT6370_REG_BL_EN, &enable); + if (ret) + return ret; + + if (!(enable & MT6370_BL_EN_MASK)) + return 0; + + ret = regmap_raw_read(priv->regmap, MT6370_REG_BL_DIM2, + brightness_val, sizeof(brightness_val)); + if (ret) + return ret; + + if (priv->vid_type == MT6370_VID_6372) + brightness_val[0] >>= MT6370_BL_DIM2_6372_SHIFT; + + brightness = brightness_val[1] << fls(MT6370_BL_DIM2_MASK); + brightness += (brightness_val[0] & MT6370_BL_DIM2_MASK); + + return brightness + 1; +} + +static const struct backlight_ops mt6370_bl_ops = { + .options = BL_CORE_SUSPENDRESUME, + .update_status = mt6370_bl_update_status, + .get_brightness = mt6370_bl_get_brightness, +}; + +static int mt6370_init_backlight_properties(struct mt6370_priv *priv, + struct backlight_properties *props) +{ + struct device *dev = priv->dev; + u8 prop_val; + u32 brightness; + unsigned int mask, val; + int ret; + + /* Vendor optional properties + * if property not exist, keep value in default. + */ + if (device_property_read_bool(dev, "mediatek,bled-pwm-enable")) { + ret = regmap_update_bits(priv->regmap, MT6370_REG_BL_PWM, + MT6370_BL_PWM_EN_MASK, + MT6370_BL_PWM_EN_MASK); + if (ret) + return ret; + } + + if (device_property_read_bool(dev, "mediatek,bled-pwm-hys-enable")) { + ret = regmap_update_bits(priv->regmap, MT6370_REG_BL_PWM, + MT6370_BL_PWM_HYS_EN_MASK, + MT6370_BL_PWM_HYS_EN_MASK); + if (ret) + return ret; + } + + ret = device_property_read_u8(dev, "mediatek,bled-pwm-hys-input-bit", + &prop_val); + if (!ret) { + val = min_t(u8, prop_val, 3) + << (ffs(MT6370_BL_PWM_HYS_SEL_MASK) - 1); + ret = regmap_update_bits(priv->regmap, MT6370_REG_BL_PWM, + MT6370_BL_PWM_HYS_SEL_MASK, val); + if (ret) + return ret; + } + + ret = device_property_read_u8(dev, "mediatek,bled-ovp-microvolt", + &prop_val); + if (!ret) { + val = min_t(u8, prop_val, 3) + << (ffs(MT6370_BL_OVP_SEL_MASK) - 1); + ret = regmap_update_bits(priv->regmap, MT6370_REG_BL_BSTCTRL, + MT6370_BL_OVP_SEL_MASK, val); + if (ret) + return ret; + } + + if (device_property_read_bool(dev, "mediatek,bled-ovp-shutdown")) { + ret = regmap_update_bits(priv->regmap, MT6370_REG_BL_BSTCTRL, + MT6370_BL_OVP_EN_MASK, + MT6370_BL_OVP_EN_MASK); + if (ret) + return ret; + } + + ret = device_property_read_u8(dev, "mediatek,bled-ocp-microamp", + &prop_val); + if (!ret) { + val = min_t(u8, prop_val, 3) + << (ffs(MT6370_BL_OC_SEL_MASK) - 1); + ret = regmap_update_bits(priv->regmap, MT6370_REG_BL_BSTCTRL, + MT6370_BL_OC_SEL_MASK, val); + if (ret) + return ret; + } + + if (device_property_read_bool(dev, "mediatek,bled-ocp-shutdown")) { + ret = regmap_update_bits(priv->regmap, MT6370_REG_BL_BSTCTRL, + MT6370_BL_OC_EN_MASK, + MT6370_BL_OC_EN_MASK); + if (ret) + return ret; + } + + /* Common properties */ + ret = device_property_read_u32(dev, "max-brightness", &brightness); + if (ret) + brightness = MT6370_BL_MAX_BRIGHTNESS; + + props->max_brightness = min_t(u32, brightness, + MT6370_BL_MAX_BRIGHTNESS); + + ret = device_property_read_u32(dev, "default-brightness", &brightness); + if (ret) + brightness = props->max_brightness; + + props->brightness = min_t(u32, brightness, props->max_brightness); + + + ret = device_property_read_u8(dev, "mediatek,bled-channel-use", + &prop_val); + if (ret) { + dev_err(dev, "mediatek,bled-channel-use DT property missing\n"); + return ret; + } + + if (!prop_val || prop_val > MT6370_BL_MAX_CH) { + dev_err(dev, "No channel specified (ch_val:%d)\n", prop_val); + return -EINVAL; + } + + mask = MT6370_BL_EXT_EN_MASK | MT6370_BL_CH_MASK; + val = prop_val << (ffs(MT6370_BL_CH_MASK) - 1); + + if (priv->enable_gpio) + val |= MT6370_BL_EXT_EN_MASK; + + return regmap_update_bits(priv->regmap, MT6370_REG_BL_EN, mask, val); +} + +static int mt6370_check_vendor_info(struct mt6370_priv *priv) +{ + /* + * MT6372 uses 14 bits to control the brightness but MT6370 and MT6371 + * use 11 bits. They are different so we have to use this function to + * check the vendor ID and use different methods to calculate the + * brightness. + */ + unsigned int dev_info, vid; + int ret; + + ret = regmap_read(priv->regmap, MT6370_REG_DEV_INFO, &dev_info); + if (ret) + return ret; + + vid = FIELD_GET(MT6370_VENID_MASK, dev_info); + if (vid == 0x9 || vid == 0xb) + priv->vid_type = MT6370_VID_6372; + else + priv->vid_type = MT6370_VID_COMMON; + + return 0; +} + +static int mt6370_bl_probe(struct platform_device *pdev) +{ + struct mt6370_priv *priv; + struct backlight_properties props = { + .type = BACKLIGHT_RAW, + .scale = BACKLIGHT_SCALE_LINEAR, + }; + int ret; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = &pdev->dev; + + priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!priv->regmap) + dev_err_probe(&pdev->dev, -ENODEV, "Failed to get regmap\n"); + + ret = mt6370_check_vendor_info(priv); + if (ret) + dev_err_probe(&pdev->dev, ret, "Failed to check vendor info\n"); + + priv->enable_gpio = devm_gpiod_get_optional(&pdev->dev, "enable", + GPIOD_OUT_HIGH); + if (IS_ERR(priv->enable_gpio)) + dev_err_probe(&pdev->dev, PTR_ERR(priv->enable_gpio), + "Failed to get 'enable' gpio\n"); + + ret = mt6370_init_backlight_properties(priv, &props); + if (ret) + dev_err_probe(&pdev->dev, ret, + "Failed to init backlight properties\n"); + + priv->bl = devm_backlight_device_register(&pdev->dev, pdev->name, + &pdev->dev, priv, + &mt6370_bl_ops, &props); + if (IS_ERR(priv->bl)) + dev_err_probe(&pdev->dev, PTR_ERR(priv->bl), + "Failed to register backlight\n"); + + backlight_update_status(priv->bl); + platform_set_drvdata(pdev, priv); + + return 0; +} + +static int mt6370_bl_remove(struct platform_device *pdev) +{ + struct mt6370_priv *priv = platform_get_drvdata(pdev); + struct backlight_device *bl_dev = priv->bl; + + bl_dev->props.brightness = 0; + backlight_update_status(priv->bl); + + return 0; +} + +static const struct of_device_id __maybe_unused mt6370_bl_of_match[] = { + { .compatible = "mediatek,mt6370-backlight", }, + {} +}; +MODULE_DEVICE_TABLE(of, mt6370_bl_of_match); + +static struct platform_driver mt6370_bl_driver = { + .driver = { + .name = "mt6370-backlight", + .of_match_table = mt6370_bl_of_match, + }, + .probe = mt6370_bl_probe, + .remove = mt6370_bl_remove, +}; +module_platform_driver(mt6370_bl_driver); + +MODULE_AUTHOR("ChiaEn Wu chiaen_wu@richtek.com"); +MODULE_DESCRIPTION("Mediatek MT6370 Backlight Driver"); +MODULE_LICENSE("GPL v2");