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 | 35 +++++++++++++++++++ 1 file changed, 35 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..49316633f92f --- /dev/null +++ b/Documentation/devicetree/bindings/usb/mediatek,mt6370-tcpc.yaml @@ -0,0 +1,35 @@ +# 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 DT bindings + +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# + description: + Properties for usb c connector. + +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..9d5c4487ca9c --- /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 for mt6370 charger + - description: usb plug in irq for mt6370 charger + - description: mivr irq for mt6370 charger + + 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. + + usb-otg-vbus: + type: object + description: OTG boost regulator. + $ref: /schemas/regulator/regulator.yaml# + + properties: + enable-gpio: + maxItems: 1 + description: | + Specify a valid 'enable' gpio for the regulator and it's optional + +required: + - compatible + - interrupts + - interrupt-names + - io-channels + +additionalProperties: false + +...

From: ChiYuan Huang cy_huang@richtek.com

Add Mediatek mt6370 indicator documentation.

Signed-off-by: ChiYuan Huang cy_huang@richtek.com --- .../leds/mediatek,mt6370-indicator.yaml | 57 +++++++++++++++++++ 1 file changed, 57 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..823be3add097 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/mediatek,mt6370-indicator.yaml @@ -0,0 +1,57 @@ +# 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. + see Documentation/devicetree/bindings/mfd/mediatek,mt6370.yaml + 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]$": + description: | + Properties for a single LED. + $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 + + mediatek,soft-start: + description: | + soft start step control, support /0.5ms/1ms/1.5ms/2ms. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3] + + 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 | 110 ++++++++++++++++++ 1 file changed, 110 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..81d72ed44be4 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml @@ -0,0 +1,110 @@ +# 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: | + 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. + + For the LCD backlight, it can provide 4 channel WLED driving capability. + Each channel driving current is up to 30mA + +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-sel: + $ref: /schemas/types.yaml#/definitions/uint8 + enum: [0, 1, 2, 3] + description: | + Backlight PWM hysteresis input level selection. + value mapping: + - 0: 1bit + - 1: 2bit + - 2: 4bit + - 3: 6bit + + mediatek,bled-ovp-shutdown: + description: | + Enable the backlight shutdown when OVP level triggered + type: boolean + + mediatek,bled-ovp-level-sel: + $ref: /schemas/types.yaml#/definitions/uint8 + enum: [0, 1, 2, 3] + description: | + Backlight OVP level selection. + value mapping: + - 0: 17V + - 1: 21V + - 2: 25V + - 3: 29V + + mediatek,bled-ocp-shutdown: + description: | + Enable the backlight shutdown when OCP level triggerred. + type: boolean + + mediatek,bled-ocp-level-sel: + $ref: /schemas/types.yaml#/definitions/uint8 + enum: [0, 1, 2, 3] + description: | + Backlight OC level selection. + value mapping: + - 0: 900mA + - 1: 1200mA + - 2: 1500mA + - 3: 1800mA + + 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 | 282 ++++++++++++++++++ .../dt-bindings/iio/adc/mediatek,mt6370_adc.h | 18 ++ include/dt-bindings/mfd/mediatek,mt6370.h | 83 ++++++ 3 files changed, 383 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/mediatek,mt6370.yaml create mode 100644 include/dt-bindings/iio/adc/mediatek,mt6370_adc.h create mode 100644 include/dt-bindings/mfd/mediatek,mt6370.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..96a12dce0108 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/mediatek,mt6370.yaml @@ -0,0 +1,282 @@ +# 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: | + List the compatible configurations of MT6370 ADC. + + 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 + $ref: /schemas/leds/mediatek,mt6370-flashlight.yaml# + + regulators: + type: object + description: | + List all supported regulators + + patternProperties: + "^(dsvbst|vibldo)$": + $ref: /schemas/regulator/regulator.yaml# + type: object + unevaluatedProperties: false + + "^(dsvpos|dsvneg)$": + $ref: /schemas/regulator/regulator.yaml# + type: object + unevaluatedProperties: false + + properties: + enable-gpio: + maxItems: 1 + description: | + Specify a valid 'enable' gpio for the regulator and it's optional + +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/mfd/mediatek,mt6370.h> + #include <dt-bindings/iio/adc/mediatek,mt6370_adc.h> + #include <dt-bindings/usb/pd.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + + mt6370@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 = <MT6370_IRQ_ATTACH>, <MT6370_IRQ_OVPCTRL_UVP_D>, + <MT6370_IRQ_CHG_MIVR>; + interrupt-names = "attach_i", "uvp_d_evt", "mivr"; + io-channels = <&mt6370_adc MT6370_CHAN_IBUS>; + + mt6370_otg_vbus: usb-otg-vbus { + regulator-compatible = "mt6370,otg-vbus"; + regulator-name = "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>; + mediatek,soft-start = <3>; + 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..18ce2fef8f9e --- /dev/null +++ b/include/dt-bindings/iio/adc/mediatek,mt6370_adc.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#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 diff --git a/include/dt-bindings/mfd/mediatek,mt6370.h b/include/dt-bindings/mfd/mediatek,mt6370.h new file mode 100644 index 000000000000..df641e5d651f --- /dev/null +++ b/include/dt-bindings/mfd/mediatek,mt6370.h @@ -0,0 +1,83 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __DT_BINDINGS_MEDIATEK_MT6370_H__ +#define __DT_BINDINGS_MEDIATEK_MT6370_H__ + +/* IRQ definitions */ +#define MT6370_IRQ_DIRCHGON 0 +#define MT6370_IRQ_CHG_TREG 4 +#define MT6370_IRQ_CHG_AICR 5 +#define MT6370_IRQ_CHG_MIVR 6 +#define MT6370_IRQ_PWR_RDY 7 +#define MT6370_IRQ_FL_CHG_VINOVP 11 +#define MT6370_IRQ_CHG_VSYSUV 12 +#define MT6370_IRQ_CHG_VSYSOV 13 +#define MT6370_IRQ_CHG_VBATOV 14 +#define MT6370_IRQ_CHG_VINOVPCHG 15 +#define MT6370_IRQ_TS_BAT_COLD 20 +#define MT6370_IRQ_TS_BAT_COOL 21 +#define MT6370_IRQ_TS_BAT_WARM 22 +#define MT6370_IRQ_TS_BAT_HOT 23 +#define MT6370_IRQ_TS_STATC 24 +#define MT6370_IRQ_CHG_FAULT 25 +#define MT6370_IRQ_CHG_STATC 26 +#define MT6370_IRQ_CHG_TMR 27 +#define MT6370_IRQ_CHG_BATABS 28 +#define MT6370_IRQ_CHG_ADPBAD 29 +#define MT6370_IRQ_CHG_RVP 30 +#define MT6370_IRQ_TSHUTDOWN 31 +#define MT6370_IRQ_CHG_IINMEAS 32 +#define MT6370_IRQ_CHG_ICCMEAS 33 +#define MT6370_IRQ_CHGDET_DONE 34 +#define MT6370_IRQ_WDTMR 35 +#define MT6370_IRQ_SSFINISH 36 +#define MT6370_IRQ_CHG_RECHG 37 +#define MT6370_IRQ_CHG_TERM 38 +#define MT6370_IRQ_CHG_IEOC 39 +#define MT6370_IRQ_ADC_DONE 40 +#define MT6370_IRQ_PUMPX_DONE 41 +#define MT6370_IRQ_BST_BATUV 45 +#define MT6370_IRQ_BST_MIDOV 46 +#define MT6370_IRQ_BST_OLP 47 +#define MT6370_IRQ_ATTACH 48 +#define MT6370_IRQ_DETACH 49 +#define MT6370_IRQ_HVDCP_STPDONE 51 +#define MT6370_IRQ_HVDCP_VBUSDET_DONE 52 +#define MT6370_IRQ_HVDCP_DET 53 +#define MT6370_IRQ_CHGDET 54 +#define MT6370_IRQ_DCDT 55 +#define MT6370_IRQ_DIRCHG_VGOK 59 +#define MT6370_IRQ_DIRCHG_WDTMR 60 +#define MT6370_IRQ_DIRCHG_UC 61 +#define MT6370_IRQ_DIRCHG_OC 62 +#define MT6370_IRQ_DIRCHG_OV 63 +#define MT6370_IRQ_OVPCTRL_SWON 67 +#define MT6370_IRQ_OVPCTRL_UVP_D 68 +#define MT6370_IRQ_OVPCTRL_UVP 69 +#define MT6370_IRQ_OVPCTRL_OVP_D 70 +#define MT6370_IRQ_OVPCTRL_OVP 71 +#define MT6370_IRQ_FLED_STRBPIN 72 +#define MT6370_IRQ_FLED_TORPIN 73 +#define MT6370_IRQ_FLED_TX 74 +#define MT6370_IRQ_FLED_LVF 75 +#define MT6370_IRQ_FLED2_SHORT 78 +#define MT6370_IRQ_FLED1_SHORT 79 +#define MT6370_IRQ_FLED2_STRB 80 +#define MT6370_IRQ_FLED1_STRB 81 +#define mT6370_IRQ_FLED2_STRB_TO 82 +#define MT6370_IRQ_FLED1_STRB_TO 83 +#define MT6370_IRQ_FLED2_TOR 84 +#define MT6370_IRQ_FLED1_TOR 85 +#define MT6370_IRQ_OTP 93 +#define MT6370_IRQ_VDDA_OVP 94 +#define MT6370_IRQ_VDDA_UV 95 +#define MT6370_IRQ_LDO_OC 103 +#define MT6370_IRQ_BLED_OCP 118 +#define MT6370_IRQ_BLED_OVP 119 +#define MT6370_IRQ_DSV_VNEG_OCP 123 +#define MT6370_IRQ_DSV_VPOS_OCP 124 +#define MT6370_IRQ_DSV_BST_OCP 125 +#define MT6370_IRQ_DSV_VNEG_SCP 126 +#define MT6370_IRQ_DSV_VPOS_SCP 127 + +#endif /* __DT_BINDINGS_MEDIATEK_MT6370_H__ */

From: ChiYuan Huang cy_huang@richtek.com

Add Mediatek MT6370 MFD support.

Signed-off-by: ChiYuan Huang cy_huang@richtek.com --- drivers/mfd/Kconfig | 13 +++ drivers/mfd/Makefile | 1 + drivers/mfd/mt6370.c | 273 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 287 insertions(+) create mode 100644 drivers/mfd/mt6370.c

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 3b59456f5545..d9a7524a3e0e 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -937,6 +937,19 @@ config MFD_MT6360 PMIC part includes 2-channel BUCKs and 2-channel LDOs LDO part includes 4-channel LDOs

+config MFD_MT6370 + tristate "Mediatek MT6370 SubPMIC" + select MFD_CORE + select REGMAP_I2C + select REGMAP_IRQ + depends on I2C + help + Say Y here to enable MT6370 SubPMIC functional support. + It integrate single cell battery charger with adc monitoring, RGB + LEDs, dual channel flashlight, WLED backlight driver, display bias + voltage supply, one general purpose LDO, and cc logic + controller with USBPD commmunication capable. + config MFD_MT6397 tristate "MediaTek MT6397 PMIC Support" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 858cacf659d6..62b27125420e 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -242,6 +242,7 @@ obj-$(CONFIG_INTEL_SOC_PMIC_BXTWC) += intel_soc_pmic_bxtwc.o obj-$(CONFIG_INTEL_SOC_PMIC_CHTWC) += intel_soc_pmic_chtwc.o obj-$(CONFIG_INTEL_SOC_PMIC_CHTDC_TI) += intel_soc_pmic_chtdc_ti.o obj-$(CONFIG_MFD_MT6360) += mt6360-core.o +obj-$(CONFIG_MFD_MT6370) += mt6370.o mt6397-objs := mt6397-core.o mt6397-irq.o mt6358-irq.o obj-$(CONFIG_MFD_MT6397) += mt6397.o obj-$(CONFIG_INTEL_SOC_PMIC_MRFLD) += intel_soc_pmic_mrfld.o diff --git a/drivers/mfd/mt6370.c b/drivers/mfd/mt6370.c new file mode 100644 index 000000000000..a5a07be7ccc2 --- /dev/null +++ b/drivers/mfd/mt6370.c @@ -0,0 +1,273 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <dt-bindings/mfd/mediatek,mt6370.h> +#include <linux/bitfield.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/mfd/core.h> +#include <linux/module.h> +#include <linux/regmap.h> + +enum { + MT6370_USBC_I2C = 0, + MT6370_PMU_I2C, + MT6370_MAX_I2C +}; + +#define MT6370_REG_DEV_INFO 0x100 +#define MT6370_REG_CHG_IRQ1 0x1C0 +#define MT6370_REG_CHG_MASK1 0x1E0 + +#define MT6370_VENID_MASK GENMASK(7, 4) + +#define MT6370_NUM_IRQREGS 16 +#define MT6370_USBC_I2CADDR 0x4E +#define MT6370_REG_ADDRLEN 2 +#define MT6370_REG_MAXADDR 0x1FF + +struct mt6370_info { + struct i2c_client *i2c[MT6370_MAX_I2C]; + struct device *dev; + struct regmap *regmap; + struct regmap_irq_chip_data *irq_data; +}; + +static const struct regmap_irq mt6370_irqs[] = { + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHGON, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_TREG, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_AICR, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_MIVR, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_PWR_RDY, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FL_CHG_VINOVP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_VSYSUV, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_VSYSOV, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_VBATOV, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_VINOVPCHG, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_TS_BAT_COLD, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_TS_BAT_COOL, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_TS_BAT_WARM, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_TS_BAT_HOT, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_TS_STATC, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_FAULT, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_STATC, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_TMR, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_BATABS, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_ADPBAD, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_RVP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_TSHUTDOWN, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_IINMEAS, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_ICCMEAS, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHGDET_DONE, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_WDTMR, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_SSFINISH, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_RECHG, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_TERM, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_IEOC, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_ADC_DONE, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_PUMPX_DONE, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_BST_BATUV, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_BST_MIDOV, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_BST_OLP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_ATTACH, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DETACH, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_HVDCP_STPDONE, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_HVDCP_VBUSDET_DONE, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_HVDCP_DET, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHGDET, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DCDT, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHG_VGOK, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHG_WDTMR, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHG_UC, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHG_OC, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHG_OV, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_OVPCTRL_SWON, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_OVPCTRL_UVP_D, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_OVPCTRL_UVP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_OVPCTRL_OVP_D, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_OVPCTRL_OVP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED_STRBPIN, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED_TORPIN, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED_TX, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED_LVF, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED2_SHORT, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED1_SHORT, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED2_STRB, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED1_STRB, 8), + REGMAP_IRQ_REG_LINE(mT6370_IRQ_FLED2_STRB_TO, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED1_STRB_TO, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED2_TOR, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED1_TOR, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_OTP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_VDDA_OVP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_VDDA_UV, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_LDO_OC, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_BLED_OCP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_BLED_OVP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DSV_VNEG_OCP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DSV_VPOS_OCP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DSV_BST_OCP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DSV_VNEG_SCP, 8), + REGMAP_IRQ_REG_LINE(MT6370_IRQ_DSV_VPOS_SCP, 8) +}; + +static const struct regmap_irq_chip mt6370_irq_chip = { + .name = "mt6370-irqs", + .status_base = MT6370_REG_CHG_IRQ1, + .mask_base = MT6370_REG_CHG_MASK1, + .num_regs = MT6370_NUM_IRQREGS, + .irqs = mt6370_irqs, + .num_irqs = ARRAY_SIZE(mt6370_irqs), +}; + +static const struct resource mt6370_regulator_irqs[] = { + DEFINE_RES_IRQ_NAMED(MT6370_IRQ_DSV_VPOS_SCP, "db_vpos_scp"), + DEFINE_RES_IRQ_NAMED(MT6370_IRQ_DSV_VNEG_SCP, "db_vneg_scp"), + DEFINE_RES_IRQ_NAMED(MT6370_IRQ_DSV_BST_OCP, "db_vbst_ocp"), + DEFINE_RES_IRQ_NAMED(MT6370_IRQ_DSV_VPOS_OCP, "db_vpos_ocp"), + DEFINE_RES_IRQ_NAMED(MT6370_IRQ_DSV_VNEG_OCP, "db_vneg_ocp"), + DEFINE_RES_IRQ_NAMED(MT6370_IRQ_LDO_OC, "ldo_oc") +}; + +static const struct mfd_cell mt6370_devices[] = { + MFD_CELL_OF("adc", NULL, NULL, 0, 0, "mediatek,mt6370-adc"), + MFD_CELL_OF("charger", NULL, NULL, 0, 0, "mediatek,mt6370-charger"), + MFD_CELL_OF("backlight", NULL, NULL, 0, 0, "mediatek,mt6370-backlight"), + MFD_CELL_OF("flashlight", NULL, NULL, 0, 0, "mediatek,mt6370-flashlight"), + MFD_CELL_OF("indicator", NULL, NULL, 0, 0, "mediatek,mt6370-indicator"), + MFD_CELL_OF("tcpc", NULL, NULL, 0, 0, "mediatek,mt6370-tcpc"), + MFD_CELL_RES("regulator", mt6370_regulator_irqs) +}; + +static int mt6370_check_vendor_info(struct mt6370_info *info) +{ + unsigned int devinfo; + int ret; + + ret = regmap_read(info->regmap, MT6370_REG_DEV_INFO, &devinfo); + if (ret) + return ret; + + switch (FIELD_GET(MT6370_VENID_MASK, devinfo)) { + case 0x8: /* RT5081 */ + case 0xA: /* RT5081A */ + case 0xE: /* MT6370 */ + case 0xF: /* MT6371 */ + case 0x9: /* MT6372P */ + case 0xB: /* MT6372CP */ + break; + default: + dev_err(info->dev, "Not invalid value 0x%02x\n", devinfo); + return -ENODEV; + } + + return 0; +} + +static int mt6370_regmap_read(void *context, const void *reg_buf, + size_t reg_size, void *val_buf, size_t val_size) +{ + struct mt6370_info *info = context; + u8 bank_idx = *(u8 *)reg_buf, bank_addr = *(u8 *)(reg_buf + 1); + int ret; + + ret = i2c_smbus_read_i2c_block_data(info->i2c[bank_idx], bank_addr, + val_size, val_buf); + if (ret != val_size) + return ret; + + return 0; +} + +static int mt6370_regmap_write(void *context, const void *data, size_t count) +{ + struct mt6370_info *info = context; + u8 bank_idx = *(u8 *)data, bank_addr = *(u8 *)(data + 1); + int len = count - MT6370_REG_ADDRLEN; + + return i2c_smbus_write_i2c_block_data(info->i2c[bank_idx], bank_addr, + len, data + MT6370_REG_ADDRLEN); +} + +static const struct regmap_bus mt6370_regmap_bus = { + .read = mt6370_regmap_read, + .write = mt6370_regmap_write, +}; + +static const struct regmap_config mt6370_regmap_config = { + .reg_bits = 16, + .val_bits = 8, + .reg_format_endian = REGMAP_ENDIAN_BIG, + .max_register = MT6370_REG_MAXADDR, +}; + +static int mt6370_probe(struct i2c_client *i2c) +{ + struct mt6370_info *info; + struct i2c_client *usbc_i2c; + int ret; + + info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->dev = &i2c->dev; + + usbc_i2c = devm_i2c_new_dummy_device(&i2c->dev, i2c->adapter, + MT6370_USBC_I2CADDR); + if (IS_ERR(usbc_i2c)) { + ret = PTR_ERR(usbc_i2c); + dev_err(&i2c->dev, "Failed to register usbc i2c client %d\n", ret); + return ret; + } + + /* Assign I2C client for PMU and TypeC */ + info->i2c[MT6370_PMU_I2C] = i2c; + info->i2c[MT6370_USBC_I2C] = usbc_i2c; + + info->regmap = devm_regmap_init(&i2c->dev, &mt6370_regmap_bus, info, + &mt6370_regmap_config); + if (IS_ERR(info->regmap)) { + ret = PTR_ERR(info->regmap); + dev_err(&i2c->dev, "Failed to register regmap (%d)\n", ret); + return ret; + } + + ret = mt6370_check_vendor_info(info); + if (ret) { + dev_err(&i2c->dev, "Failed to check vendor info (%d)\n", ret); + return ret; + } + + ret = devm_regmap_add_irq_chip(&i2c->dev, info->regmap, i2c->irq, + IRQF_ONESHOT, -1, &mt6370_irq_chip, + &info->irq_data); + if (ret) { + dev_err(&i2c->dev, "Failed to add irq chip (%d)\n", ret); + return ret; + } + + return devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO, + mt6370_devices, ARRAY_SIZE(mt6370_devices), + NULL, 0, + regmap_irq_get_domain(info->irq_data)); +} + +static const struct of_device_id mt6370_match_table[] = { + { .compatible = "mediatek,mt6370", }, + {} +}; +MODULE_DEVICE_TABLE(of, mt6370_match_table); + +static struct i2c_driver mt6370_driver = { + .driver = { + .name = "mt6370", + .of_match_table = mt6370_match_table, + }, + .probe_new = mt6370_probe, +}; +module_i2c_driver(mt6370_driver); + +MODULE_AUTHOR("ChiYuan Huang cy_huang@richtek.com"); +MODULE_DESCRIPTION("MT6370 I2C MFD Driver"); +MODULE_LICENSE("GPL v2");

From: ChiYuan Huang cy_huang@richtek.com

Add mt6370 DisplayBias and VibLDO support.

Signed-off-by: ChiYuan Huang cy_huang@richtek.com --- drivers/regulator/Kconfig | 8 + drivers/regulator/Makefile | 1 + drivers/regulator/mt6370-regulator.c | 389 +++++++++++++++++++++++++++ 3 files changed, 398 insertions(+) create mode 100644 drivers/regulator/mt6370-regulator.c

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index cbe0f96ca342..dcb6866dab53 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -804,6 +804,14 @@ config REGULATOR_MT6360 2-channel buck with Thermal Shutdown and Overload Protection 6-channel High PSRR and Low Dropout LDO.

+config REGULATOR_MT6370 + tristate "MT6370 SubPMIC Regulator" + depends on MFD_MT6370 + help + Say Y here to enable MT6370 regulator support. + This driver support the control for DisplayBias voltages and one + general purpose LDO which commonly used to drive the vibrator. + config REGULATOR_MT6380 tristate "MediaTek MT6380 PMIC" depends on MTK_PMIC_WRAP diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 8d3ee8b6d41d..f1cbff21843e 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -97,6 +97,7 @@ obj-$(CONFIG_REGULATOR_MT6323) += mt6323-regulator.o obj-$(CONFIG_REGULATOR_MT6358) += mt6358-regulator.o obj-$(CONFIG_REGULATOR_MT6359) += mt6359-regulator.o obj-$(CONFIG_REGULATOR_MT6360) += mt6360-regulator.o +obj-$(CONFIG_REGULATOR_MT6370) += mt6370-regulator.o obj-$(CONFIG_REGULATOR_MT6380) += mt6380-regulator.o obj-$(CONFIG_REGULATOR_MT6397) += mt6397-regulator.o obj-$(CONFIG_REGULATOR_MTK_DVFSRC) += mtk-dvfsrc-regulator.o diff --git a/drivers/regulator/mt6370-regulator.c b/drivers/regulator/mt6370-regulator.c new file mode 100644 index 000000000000..949b2c7b5556 --- /dev/null +++ b/drivers/regulator/mt6370-regulator.c @@ -0,0 +1,389 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <linux/bits.h> +#include <linux/gpio/consumer.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> + +enum { + MT6370_IDX_DSVBOOST = 0, + MT6370_IDX_DSVPOS, + MT6370_IDX_DSVNEG, + MT6370_IDX_VIBLDO, + MT6370_MAX_IDX +}; + +#define MT6370_REG_LDO_CFG 0x180 +#define MT6370_REG_LDO_VOUT 0x181 +#define MT6370_REG_DB_CTRL1 0x1B0 +#define MT6370_REG_DB_CTRL2 0x1B1 +#define MT6370_REG_DB_VBST 0x1B2 +#define MT6370_REG_DB_VPOS 0x1B3 +#define MT6370_REG_DB_VNEG 0x1B4 +#define MT6370_REG_LDO_STAT 0x1DC +#define MT6370_REG_DB_STAT 0x1DF + +#define MT6370_LDOOMS_MASK BIT(7) +#define MT6370_LDOEN_MASK BIT(7) +#define MT6370_LDOVOUT_MASK GENMASK(3, 0) +#define MT6370_DBPERD_MASK (BIT(7) | BIT(4)) +#define MT6370_DBEXTEN_MASK BIT(0) +#define MT6370_DBVPOSEN_MASK BIT(6) +#define MT6370_DBVPOSDISG_MASK BIT(5) +#define MT6370_DBVNEGEN_MASK BIT(3) +#define MT6370_DBVNEGDISG_MASK BIT(2) +#define MT6370_DBALLON_MASK (MT6370_DBVPOSEN_MASK | MT6370_DBVNEGEN_MASK) +#define MT6370_DBSLEW_MASK GENMASK(7, 6) +#define MT6370_DBVOUT_MASK GENMASK(5, 0) +#define MT6370_LDOOC_EVT_MASK BIT(7) +#define MT6370_POSSCP_EVT_MASK BIT(7) +#define MT6370_NEGSCP_EVT_MASK BIT(6) +#define MT6370_BSTOCP_EVT_MASK BIT(5) +#define MT6370_POSOCP_EVT_MASK BIT(4) +#define MT6370_NEGOCP_EVT_MASK BIT(3) + +#define MT6370_LDO_MINUV 1600000 +#define MT6370_LDO_STPUV 200000 +#define MT6370_LDO_N_VOLT 13 +#define MT6370_DBVBOOST_MINUV 4000000 +#define MT6370_DBVBOOST_STPUV 50000 +#define MT6370_DBVBOOST_N_VOLT 45 +#define MT6370_DBVOUT_MINUV 4000000 +#define MT6370_DBVOUT_STPUV 50000 +#define MT6370_DBVOUT_N_VOLT 41 + +struct mt6370_priv { + struct device *dev; + struct regmap *regmap; + struct regulator_dev *rdev[MT6370_MAX_IDX]; + bool use_external_ctrl; +}; + +static const unsigned int mt6370_vpos_ramp_tbl[] = { 8540, 5840, 4830, 3000 }; +static const unsigned int mt6370_vneg_ramp_tbl[] = { 10090, 6310, 5050, 3150 }; + +static int mt6370_get_error_flags(struct regulator_dev *rdev, + unsigned int *flags) +{ + struct regmap *regmap = rdev_get_regmap(rdev); + unsigned int stat_reg, stat, rpt_flags = 0; + int rid = rdev_get_id(rdev), ret; + + if (rid == MT6370_IDX_VIBLDO) + stat_reg = MT6370_REG_LDO_STAT; + else + stat_reg = MT6370_REG_DB_STAT; + + ret = regmap_read(regmap, stat_reg, &stat); + if (ret) + return ret; + + switch (rid) { + case MT6370_IDX_DSVBOOST: + if (stat & MT6370_BSTOCP_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; + break; + case MT6370_IDX_DSVPOS: + if (stat & MT6370_POSSCP_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_UNDER_VOLTAGE; + + if (stat & MT6370_POSOCP_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; + break; + case MT6370_IDX_DSVNEG: + if (stat & MT6370_NEGSCP_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_UNDER_VOLTAGE; + + if (stat & MT6370_NEGOCP_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; + break; + default: + if (stat & MT6370_LDOOC_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; + break; + } + + *flags = rpt_flags; + return 0; +} + +static const struct regulator_ops mt6370_dbvboost_ops = { + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, + .get_bypass = regulator_get_bypass_regmap, + .set_bypass = regulator_set_bypass_regmap, + .get_error_flags = mt6370_get_error_flags, +}; + +static const struct regulator_ops mt6370_dbvout_ops = { + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .set_active_discharge = regulator_set_active_discharge_regmap, + .set_ramp_delay = regulator_set_ramp_delay_regmap, + .get_error_flags = mt6370_get_error_flags, +}; + +static const struct regulator_ops mt6370_ldo_ops = { + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .set_active_discharge = regulator_set_active_discharge_regmap, + .get_error_flags = mt6370_get_error_flags, +}; + +static int mt6370_of_parse_cb(struct device_node *np, + const struct regulator_desc *desc, + struct regulator_config *config) +{ + struct mt6370_priv *priv = config->driver_data; + struct gpio_desc *enable_gpio; + int ret; + + enable_gpio = fwnode_gpiod_get_index(of_fwnode_handle(np), "enable", 0, + GPIOD_OUT_HIGH | + GPIOD_FLAGS_BIT_NONEXCLUSIVE, + desc->name); + if (IS_ERR(enable_gpio)) { + config->ena_gpiod = NULL; + return 0; + } + + /* + * RG control by default + * Only if all are using external pin, change all by external control + */ + if (priv->use_external_ctrl) { + ret = regmap_update_bits(priv->regmap, MT6370_REG_DB_CTRL1, + MT6370_DBEXTEN_MASK, + MT6370_DBEXTEN_MASK); + if (ret) + return ret; + } + + config->ena_gpiod = enable_gpio; + priv->use_external_ctrl = true; + return 0; +} + +static const struct regulator_desc mt6370_regulator_descs[] = { + { + .name = "mt6370-dsv-vbst", + .of_match = of_match_ptr("dsvbst"), + .regulators_node = of_match_ptr("regulators"), + .id = MT6370_IDX_DSVBOOST, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .ops = &mt6370_dbvboost_ops, + .min_uV = MT6370_DBVBOOST_MINUV, + .uV_step = MT6370_DBVBOOST_STPUV, + .n_voltages = MT6370_DBVBOOST_N_VOLT, + .vsel_reg = MT6370_REG_DB_VBST, + .vsel_mask = MT6370_DBVOUT_MASK, + .bypass_reg = MT6370_REG_DB_CTRL1, + .bypass_mask = MT6370_DBPERD_MASK, + .bypass_val_on = MT6370_DBPERD_MASK, + }, + { + .name = "mt6370-dsv-vpos", + .of_match = of_match_ptr("dsvpos"), + .regulators_node = of_match_ptr("regulators"), + .id = MT6370_IDX_DSVPOS, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .of_parse_cb = mt6370_of_parse_cb, + .ops = &mt6370_dbvout_ops, + .min_uV = MT6370_DBVOUT_MINUV, + .uV_step = MT6370_DBVOUT_STPUV, + .n_voltages = MT6370_DBVOUT_N_VOLT, + .vsel_reg = MT6370_REG_DB_VPOS, + .vsel_mask = MT6370_DBVOUT_MASK, + .enable_reg = MT6370_REG_DB_CTRL2, + .enable_mask = MT6370_DBVPOSEN_MASK, + .ramp_reg = MT6370_REG_DB_VPOS, + .ramp_mask = MT6370_DBSLEW_MASK, + .ramp_delay_table = mt6370_vpos_ramp_tbl, + .n_ramp_values = ARRAY_SIZE(mt6370_vpos_ramp_tbl), + .active_discharge_reg = MT6370_REG_DB_CTRL2, + .active_discharge_mask = MT6370_DBVPOSDISG_MASK, + .active_discharge_on = MT6370_DBVPOSDISG_MASK, + }, + { + .name = "mt6370-dsv-vneg", + .of_match = of_match_ptr("dsvneg"), + .regulators_node = of_match_ptr("regulators"), + .id = MT6370_IDX_DSVNEG, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .of_parse_cb = mt6370_of_parse_cb, + .ops = &mt6370_dbvout_ops, + .min_uV = MT6370_DBVOUT_MINUV, + .uV_step = MT6370_DBVOUT_STPUV, + .n_voltages = MT6370_DBVOUT_N_VOLT, + .vsel_reg = MT6370_REG_DB_VNEG, + .vsel_mask = MT6370_DBVOUT_MASK, + .enable_reg = MT6370_REG_DB_CTRL2, + .enable_mask = MT6370_DBVNEGEN_MASK, + .ramp_reg = MT6370_REG_DB_VNEG, + .ramp_mask = MT6370_DBSLEW_MASK, + .ramp_delay_table = mt6370_vneg_ramp_tbl, + .n_ramp_values = ARRAY_SIZE(mt6370_vneg_ramp_tbl), + .active_discharge_reg = MT6370_REG_DB_CTRL2, + .active_discharge_mask = MT6370_DBVNEGDISG_MASK, + .active_discharge_on = MT6370_DBVNEGDISG_MASK, + }, + { + .name = "mt6370-vib-ldo", + .of_match = of_match_ptr("vibldo"), + .regulators_node = of_match_ptr("regulators"), + .id = MT6370_IDX_VIBLDO, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .ops = &mt6370_ldo_ops, + .min_uV = MT6370_LDO_MINUV, + .uV_step = MT6370_LDO_STPUV, + .n_voltages = MT6370_LDO_N_VOLT, + .vsel_reg = MT6370_REG_LDO_VOUT, + .vsel_mask = MT6370_LDOVOUT_MASK, + .enable_reg = MT6370_REG_LDO_VOUT, + .enable_mask = MT6370_LDOEN_MASK, + .active_discharge_reg = MT6370_REG_LDO_CFG, + .active_discharge_mask = MT6370_LDOOMS_MASK, + .active_discharge_on = MT6370_LDOOMS_MASK, + } +}; + +static irqreturn_t mt6370_scp_handler(int irq, void *data) +{ + struct regulator_dev *rdev = data; + + regulator_notifier_call_chain(rdev, REGULATOR_EVENT_UNDER_VOLTAGE, + NULL); + return IRQ_HANDLED; +} + +static irqreturn_t mt6370_ocp_handler(int irq, void *data) +{ + struct regulator_dev *rdev = data; + + regulator_notifier_call_chain(rdev, REGULATOR_EVENT_OVER_CURRENT, NULL); + return IRQ_HANDLED; +} + +static int mt6370_regulator_irq_register(struct mt6370_priv *priv) +{ + struct platform_device *pdev = to_platform_device(priv->dev); + static const struct { + const char *name; + int rid; + irq_handler_t handler; + } mt6370_irqs[] = { + { "db_vpos_scp", MT6370_IDX_DSVPOS, mt6370_scp_handler }, + { "db_vneg_scp", MT6370_IDX_DSVNEG, mt6370_scp_handler }, + { "db_vbst_ocp", MT6370_IDX_DSVBOOST, mt6370_ocp_handler }, + { "db_vpos_ocp", MT6370_IDX_DSVPOS, mt6370_ocp_handler }, + { "db_vneg_ocp", MT6370_IDX_DSVNEG, mt6370_ocp_handler }, + { "ldo_oc", MT6370_IDX_VIBLDO, mt6370_ocp_handler } + }; + struct regulator_dev *rdev; + int i, irq, ret; + + for (i = 0; i < ARRAY_SIZE(mt6370_irqs); i++) { + irq = platform_get_irq_byname(pdev, mt6370_irqs[i].name); + + rdev = priv->rdev[mt6370_irqs[i].rid]; + + ret = devm_request_threaded_irq(priv->dev, irq, NULL, + mt6370_irqs[i].handler, 0, + mt6370_irqs[i].name, rdev); + if (ret) { + dev_err(priv->dev, + "Failed to register (%d) interrupt\n", i); + return ret; + } + } + + return 0; +} + +static int mt6370_regualtor_register(struct mt6370_priv *priv) +{ + struct regulator_dev *rdev; + struct regulator_config cfg = {}; + struct device *parent = priv->dev->parent; + int i; + + cfg.dev = parent; + cfg.driver_data = priv; + + for (i = 0; i < MT6370_MAX_IDX; i++) { + rdev = devm_regulator_register(priv->dev, + mt6370_regulator_descs + i, + &cfg); + if (IS_ERR(rdev)) { + dev_err(priv->dev, + "Failed to register (%d) regulator\n", i); + return PTR_ERR(rdev); + } + + priv->rdev[i] = rdev; + } + + return 0; +} + +static int mt6370_regulator_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; + + priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!priv->regmap) { + dev_err(&pdev->dev, "Failed to init regmap\n"); + return -ENODEV; + } + + ret = mt6370_regualtor_register(priv); + if (ret) + return ret; + + return mt6370_regulator_irq_register(priv); +} + +static const struct platform_device_id mt6370_devid_table[] = { + { "mt6370-regulator", 0}, + {} +}; +MODULE_DEVICE_TABLE(platform, mt6370_devid_table); + +static struct platform_driver mt6370_regulator_driver = { + .driver = { + .name = "mt6370-regulator", + }, + .id_table = mt6370_devid_table, + .probe = mt6370_regulator_probe, +}; +module_platform_driver(mt6370_regulator_driver); + +MODULE_AUTHOR("ChiYuan Huang cy_huang@richtek.com"); +MODULE_DESCRIPTION("Mediatek MT6370 Regulator Driver"); +MODULE_LICENSE("GPL v2");

From: Alice Chen alice_chen@richtek.com

Add Mediatek MT6370 Indicator support

Signed-off-by: Alice Chen alice_chen@richtek.com --- drivers/leds/Kconfig | 11 + drivers/leds/Makefile | 1 + drivers/leds/leds-mt6370.c | 994 +++++++++++++++++++++++++++++++++++++ 3 files changed, 1006 insertions(+) create mode 100644 drivers/leds/leds-mt6370.c

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 6090e647daee..0cb2294b3431 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -244,6 +244,17 @@ config LEDS_MT6323 This option enables support for on-chip LED drivers found on Mediatek MT6323 PMIC.

+config LEDS_MT6370_RGB + tristate "LED Support for Mediatek MT6370 PMIC" + depends on LEDS_CLASS + depends on MFD_MT6370 + select LINEAR_RANGE + help + Support 4 channels and reg/pwm/breath mode. + Isink4 can also use as a CHG_VIN power good Indicator. + Say Y here to enable support for + MT6370_RGB_LED device. + config LEDS_S3C24XX tristate "LED Support for Samsung S3C24XX GPIO LEDs" depends on LEDS_CLASS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index e58ecb36360f..b641fd83f49a 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -62,6 +62,7 @@ obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o obj-$(CONFIG_LEDS_MLXCPLD) += leds-mlxcpld.o obj-$(CONFIG_LEDS_MLXREG) += leds-mlxreg.o obj-$(CONFIG_LEDS_MT6323) += leds-mt6323.o +obj-$(CONFIG_LEDS_MT6370_RGB) += leds-mt6370.o obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o obj-$(CONFIG_LEDS_NETXBIG) += leds-netxbig.o obj-$(CONFIG_LEDS_NIC78BX) += leds-nic78bx.o diff --git a/drivers/leds/leds-mt6370.c b/drivers/leds/leds-mt6370.c new file mode 100644 index 000000000000..54f654d4f4fc --- /dev/null +++ b/drivers/leds/leds-mt6370.c @@ -0,0 +1,994 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/bitops.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/led-class-multicolor.h> +#include <linux/linear_range.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/property.h> +#include <linux/regmap.h> + +enum { + MT6370_LED_ISNK1 = 0, + MT6370_LED_ISNK2, + MT6370_LED_ISNK3, + MT6370_LED_ISNK4, + MT6370_MAX_LEDS +}; + +enum mt6370_led_mode { + MT6370_LED_PWM_MODE = 0, + MT6370_LED_BREATH_MODE, + MT6370_LED_REG_MODE, + MT6370_LED_MAX_MODE +}; + +enum mt6370_led_field { + F_RGB_EN = 0, + F_CHGIND_EN, + F_LED1_CURR, + F_LED2_CURR, + F_LED3_CURR, + F_LED4_CURR, + F_LED1_MODE, + F_LED2_MODE, + F_LED3_MODE, + F_LED4_MODE, + F_LED1_DUTY, + F_LED2_DUTY, + F_LED3_DUTY, + F_LED4_DUTY, + F_LED1_FREQ, + F_LED2_FREQ, + F_LED3_FREQ, + F_LED4_FREQ, + F_MAX_FIELDS +}; + +enum mt6370_led_ranges { + R_LED123_CURR = 0, + R_LED4_CURR, + R_LED_TRFON, + R_LED_TOFF, + R_MAX_RANGES, +}; + +enum mt6370_pattern { + P_LED_TR1 = 0, + P_LED_TR2, + P_LED_TF1, + P_LED_TF2, + P_LED_TON, + P_LED_TOFF, + P_MAX_PATTERNS +}; + +#define MT6370_REG_DEV_INFO 0x100 +#define MT6370_REG_RGB1_DIM 0x182 +#define MT6370_REG_RGB2_DIM 0x183 +#define MT6370_REG_RGB3_DIM 0x184 +#define MT6370_REG_RGB_EN 0x185 +#define MT6370_REG_RGB1_ISNK 0x186 +#define MT6370_REG_RGB2_ISNK 0x187 +#define MT6370_REG_RGB3_ISNK 0x188 +#define MT6370_REG_RGB1_TR 0x189 +#define MT6370_REG_RGB_CHRIND_DIM 0x192 +#define MT6370_REG_RGB_CHRIND_CTRL 0x193 +#define MT6370_REG_RGB_CHRIND_TR 0x194 + +#define MT6372_REG_RGB_EN 0x182 +#define MT6372_REG_RGB1_ISNK 0x183 +#define MT6372_REG_RGB2_ISNK 0x184 +#define MT6372_REG_RGB3_ISNK 0x185 +#define MT6372_REG_RGB4_ISNK 0x186 +#define MT6372_REG_RGB1_DIM 0x187 +#define MT6372_REG_RGB2_DIM 0x188 +#define MT6372_REG_RGB3_DIM 0x189 +#define MT6372_REG_RGB4_DIM 0x18A +#define MT6372_REG_RGB12_FREQ 0x18B +#define MT6372_REG_RGB34_FREQ 0x18C +#define MT6372_REG_RGB1_TR 0x18D + +#define MT6370_VENID_MASK GENMASK(7, 4) +#define MT6370_CHEN_BIT(id) BIT(MT6370_LED_ISNK4 - id) +#define MT6370_VIRTUAL_MULTICOLOR 5 +#define MC_CHANNEL_NUM 3 +#define MT6370_PWM_DUTY 31 +#define MT6372_PMW_DUTY 255 + +#define STATE_OFF 0 +#define STATE_KEEP 1 +#define STATE_ON 2 + +struct mt6370_led { + union { + struct led_classdev isink; + struct led_classdev_mc mc; + }; + struct mt6370_priv *priv; + u32 default_state; + u32 index; +}; + +struct mt6370_priv { + struct mutex lock; + struct device *dev; + struct regmap *regmap; + struct regmap_field *fields[F_MAX_FIELDS]; + const struct reg_field *reg_fields; + const struct linear_range *ranges; + struct reg_cfg *reg_cfgs; + unsigned int leds_count; + unsigned int leds_active; + bool is_mt6372; + struct mt6370_led leds[]; +}; + +static const struct reg_field common_reg_fields[F_MAX_FIELDS] = { + [F_RGB_EN] = REG_FIELD(MT6370_REG_RGB_EN, 4, 7), + [F_CHGIND_EN] = REG_FIELD(MT6370_REG_RGB_CHRIND_DIM, 7, 7), + [F_LED1_CURR] = REG_FIELD(MT6370_REG_RGB1_ISNK, 0, 2), + [F_LED2_CURR] = REG_FIELD(MT6370_REG_RGB2_ISNK, 0, 2), + [F_LED3_CURR] = REG_FIELD(MT6370_REG_RGB3_ISNK, 0, 2), + [F_LED4_CURR] = REG_FIELD(MT6370_REG_RGB_CHRIND_CTRL, 0, 1), + [F_LED1_MODE] = REG_FIELD(MT6370_REG_RGB1_DIM, 5, 6), + [F_LED2_MODE] = REG_FIELD(MT6370_REG_RGB2_DIM, 5, 6), + [F_LED3_MODE] = REG_FIELD(MT6370_REG_RGB3_DIM, 5, 6), + [F_LED4_MODE] = REG_FIELD(MT6370_REG_RGB_CHRIND_DIM, 5, 6), + [F_LED1_DUTY] = REG_FIELD(MT6370_REG_RGB1_DIM, 0, 4), + [F_LED2_DUTY] = REG_FIELD(MT6370_REG_RGB2_DIM, 0, 4), + [F_LED3_DUTY] = REG_FIELD(MT6370_REG_RGB3_DIM, 0, 4), + [F_LED4_DUTY] = REG_FIELD(MT6370_REG_RGB_CHRIND_DIM, 0, 4), + [F_LED1_FREQ] = REG_FIELD(MT6370_REG_RGB1_ISNK, 3, 5), + [F_LED2_FREQ] = REG_FIELD(MT6370_REG_RGB2_ISNK, 3, 5), + [F_LED3_FREQ] = REG_FIELD(MT6370_REG_RGB3_ISNK, 3, 5), + [F_LED4_FREQ] = REG_FIELD(MT6370_REG_RGB_CHRIND_CTRL, 2, 4) +}; + +static const struct reg_field mt6372_reg_fields[F_MAX_FIELDS] = { + [F_RGB_EN] = REG_FIELD(MT6372_REG_RGB_EN, 4, 7), + [F_CHGIND_EN] = REG_FIELD(MT6372_REG_RGB_EN, 3, 3), + [F_LED1_CURR] = REG_FIELD(MT6372_REG_RGB1_ISNK, 0, 3), + [F_LED2_CURR] = REG_FIELD(MT6372_REG_RGB2_ISNK, 0, 3), + [F_LED3_CURR] = REG_FIELD(MT6372_REG_RGB3_ISNK, 0, 3), + [F_LED4_CURR] = REG_FIELD(MT6372_REG_RGB4_ISNK, 0, 3), + [F_LED1_MODE] = REG_FIELD(MT6372_REG_RGB1_ISNK, 6, 7), + [F_LED2_MODE] = REG_FIELD(MT6372_REG_RGB2_ISNK, 6, 7), + [F_LED3_MODE] = REG_FIELD(MT6372_REG_RGB3_ISNK, 6, 7), + [F_LED4_MODE] = REG_FIELD(MT6372_REG_RGB4_ISNK, 6, 7), + [F_LED1_DUTY] = REG_FIELD(MT6372_REG_RGB1_DIM, 0, 7), + [F_LED2_DUTY] = REG_FIELD(MT6372_REG_RGB2_DIM, 0, 7), + [F_LED3_DUTY] = REG_FIELD(MT6372_REG_RGB3_DIM, 0, 7), + [F_LED4_DUTY] = REG_FIELD(MT6372_REG_RGB4_DIM, 0, 7), + [F_LED1_FREQ] = REG_FIELD(MT6372_REG_RGB12_FREQ, 5, 7), + [F_LED2_FREQ] = REG_FIELD(MT6372_REG_RGB12_FREQ, 2, 4), + [F_LED3_FREQ] = REG_FIELD(MT6372_REG_RGB34_FREQ, 5, 7), + [F_LED4_FREQ] = REG_FIELD(MT6372_REG_RGB34_FREQ, 2, 4) +}; + +/* Current unit: microamp, time unit: millisecond */ +static const struct linear_range common_led_ranges[R_MAX_RANGES] = { + [R_LED123_CURR] = { 4000, 1, 6, 4000 }, + [R_LED4_CURR] = { 2000, 1, 3, 2000 }, + [R_LED_TRFON] = { 125, 0, 15, 200 }, + [R_LED_TOFF] = { 250, 0, 15, 400 } +}; + +static const struct linear_range mt6372_led_ranges[R_MAX_RANGES] = { + [R_LED123_CURR] = { 2000, 1, 14, 2000 }, + [R_LED4_CURR] = { 2000, 1, 14, 2000 }, + [R_LED_TRFON] = { 125, 0, 15, 250 }, + [R_LED_TOFF] = { 250, 0, 15, 500 } +}; + +static enum mt6370_led_field mt6370_get_led_current_field(unsigned int led_no) +{ + switch (led_no) { + case MT6370_LED_ISNK1: + return F_LED1_CURR; + case MT6370_LED_ISNK2: + return F_LED2_CURR; + case MT6370_LED_ISNK3: + return F_LED3_CURR; + default: + return F_LED4_CURR; + } +} + +static int mt6370_set_led_brightness(struct mt6370_priv *priv, + unsigned int led_no, unsigned int level) +{ + enum mt6370_led_field sel_field; + + sel_field = mt6370_get_led_current_field(led_no); + + return regmap_field_write(priv->fields[sel_field], level); +} + +static int mt6370_get_led_brightness(struct mt6370_priv *priv, + unsigned int led_no, unsigned int *level) +{ + enum mt6370_led_field sel_field; + + sel_field = mt6370_get_led_current_field(led_no); + + return regmap_field_read(priv->fields[sel_field], level); +} + +static int mt6370_set_led_duty(struct mt6370_priv *priv, unsigned int led_no, + unsigned int ton, unsigned int toff) +{ + enum mt6370_led_field sel_field; + unsigned int divisor, ratio; + + divisor = priv->is_mt6372 ? MT6372_PMW_DUTY : MT6370_PWM_DUTY; + ratio = ton * divisor / (ton + toff); + + switch (led_no) { + case MT6370_LED_ISNK1: + sel_field = F_LED1_DUTY; + break; + case MT6370_LED_ISNK2: + sel_field = F_LED2_DUTY; + break; + case MT6370_LED_ISNK3: + sel_field = F_LED3_DUTY; + break; + default: + sel_field = F_LED4_DUTY; + } + + return regmap_field_write(priv->fields[sel_field], ratio); +} + +static const unsigned int common_tfreqs[] = { + 10000, 5000, 2000, 1000, 500, 200, 5, 1 +}; + +static const unsigned int mt6372_tfreqs[] = { + 8000, 4000, 2000, 1000, 500, 250, 8, 4 +}; + +static int mt6370_set_led_freq(struct mt6370_priv *priv, unsigned int led_no, + unsigned int ton, unsigned int toff) +{ + enum mt6370_led_field sel_field; + const unsigned int *tfreq; + unsigned int tfreq_len, tsum; + int i; + + if (priv->is_mt6372) { + tfreq = mt6372_tfreqs; + tfreq_len = ARRAY_SIZE(mt6372_tfreqs); + } else { + tfreq = common_tfreqs; + tfreq_len = ARRAY_SIZE(common_tfreqs); + } + + tsum = ton + toff; + + if (tsum > tfreq[0] || tsum < tfreq[tfreq_len - 1]) + return -EOPNOTSUPP; + + for (i = 0; i < tfreq_len; i++) { + if (tsum >= tfreq[i]) + break; + } + + switch (led_no) { + case MT6370_LED_ISNK1: + sel_field = F_LED1_FREQ; + break; + case MT6370_LED_ISNK2: + sel_field = F_LED2_FREQ; + break; + case MT6370_LED_ISNK3: + sel_field = F_LED3_FREQ; + break; + default: + sel_field = F_LED4_FREQ; + } + + return regmap_field_write(priv->fields[sel_field], i); +} + +static void mt6370_get_breath_reg_base(struct mt6370_priv *priv, + unsigned int led_no, unsigned int *base) +{ + if (priv->is_mt6372) { + *base = MT6372_REG_RGB1_TR + led_no * 3; + return; + } + + switch (led_no) { + case MT6370_LED_ISNK1: + case MT6370_LED_ISNK2: + case MT6370_LED_ISNK3: + *base = MT6370_REG_RGB1_TR + led_no * 3; + break; + default: + *base = MT6370_REG_RGB_CHRIND_TR; + } +} + +static int mt6370_gen_breath_pattern(struct mt6370_priv *priv, + struct led_pattern *pattern, u32 len, + u8 *pattern_val, u32 val_len) +{ + enum mt6370_led_ranges sel_range; + struct led_pattern *curr; + unsigned int sel; + u8 val[P_MAX_PATTERNS / 2] = {0}; + int i; + + if (len < P_MAX_PATTERNS && val_len < P_MAX_PATTERNS / 2) + return -EINVAL; + + /* + * Pattern list + * tr1: byte 0, b'[7: 4] + * tr2: byte 0, b'[3: 0] + * tf1: byte 1, b'[7: 4] + * tf2: byte 1, b'[3: 0] + * ton: byte 2, b'[7: 4] + * toff: byte 2, b'[3: 0] + */ + for (i = 0; i < P_MAX_PATTERNS; i++) { + curr = pattern + i; + + sel_range = i == P_LED_TOFF ? R_LED_TOFF : R_LED_TRFON; + + linear_range_get_selector_within(priv->ranges + sel_range, + curr->delta_t, &sel); + + val[i / 2] |= sel << (4 * ((i + 1) % 2)); + } + + memcpy(pattern_val, val, 3); + return 0; +} + +static int mt6370_set_led_mode(struct mt6370_priv *priv, unsigned int led_no, + enum mt6370_led_mode mode) +{ + enum mt6370_led_field sel_field; + + switch (led_no) { + case MT6370_LED_ISNK1: + sel_field = F_LED1_MODE; + break; + case MT6370_LED_ISNK2: + sel_field = F_LED2_MODE; + break; + case MT6370_LED_ISNK3: + sel_field = F_LED3_MODE; + break; + default: + sel_field = F_LED4_MODE; + } + + return regmap_field_write(priv->fields[sel_field], mode); +} + +static int mt6370_mc_brightness_set(struct led_classdev *lcdev, + enum led_brightness level) +{ + struct led_classdev_mc *mccdev = lcdev_to_mccdev(lcdev); + struct mt6370_led *led = container_of(mccdev, struct mt6370_led, mc); + struct mt6370_priv *priv = led->priv; + struct mc_subled *subled; + unsigned int enable, disable; + int i, ret; + + mutex_lock(&priv->lock); + + led_mc_calc_color_components(mccdev, level); + + ret = regmap_field_read(priv->fields[F_RGB_EN], &enable); + if (ret) + goto out; + + disable = enable; + + for (i = 0; i < mccdev->num_colors; i++) { + u32 brightness; + + subled = mccdev->subled_info + i; + brightness = min(subled->brightness, lcdev->max_brightness); + disable &= ~MT6370_CHEN_BIT(subled->channel); + + if (level == LED_OFF) { + enable &= ~MT6370_CHEN_BIT(subled->channel); + + ret = mt6370_set_led_mode(priv, subled->channel, + MT6370_LED_REG_MODE); + if (ret) + goto out; + + continue; + } + + if (brightness == LED_OFF) { + enable &= ~MT6370_CHEN_BIT(subled->channel); + continue; + } + + enable |= MT6370_CHEN_BIT(subled->channel); + + ret = mt6370_set_led_brightness(priv, subled->channel, + brightness); + if (ret) + goto out; + } + + ret = regmap_field_write(priv->fields[F_RGB_EN], disable); + if (ret) + goto out; + + ret = regmap_field_write(priv->fields[F_RGB_EN], enable); + +out: + mutex_unlock(&priv->lock); + + return ret; +} + +static int mt6370_mc_blink_set(struct led_classdev *lcdev, + unsigned long *delay_on, + unsigned long *delay_off) +{ + struct led_classdev_mc *mccdev = lcdev_to_mccdev(lcdev); + struct mt6370_led *led = container_of(mccdev, struct mt6370_led, mc); + struct mt6370_priv *priv = led->priv; + struct mc_subled *subled; + unsigned int enable, disable; + int i, ret; + + mutex_lock(&priv->lock); + + if (!*delay_on && !*delay_off) + *delay_on = *delay_off = 500; + + ret = regmap_field_read(priv->fields[F_RGB_EN], &enable); + if (ret) + goto out; + + disable = enable; + + for (i = 0; i < mccdev->num_colors; i++) { + subled = mccdev->subled_info + i; + + disable &= ~MT6370_CHEN_BIT(subled->channel); + + ret = mt6370_set_led_duty(priv, subled->channel, *delay_on, + *delay_off); + if (ret) + goto out; + + ret = mt6370_set_led_freq(priv, subled->channel, *delay_on, + *delay_off); + if (ret) + goto out; + + ret = mt6370_set_led_mode(priv, subled->channel, + MT6370_LED_PWM_MODE); + if (ret) + goto out; + } + + /* Toggle to make pattern timing the same */ + ret = regmap_field_write(priv->fields[F_RGB_EN], disable); + if (ret) + goto out; + + ret = regmap_field_write(priv->fields[F_RGB_EN], enable); + +out: + mutex_unlock(&priv->lock); + + return ret; +} + +static int mt6370_mc_pattern_set(struct led_classdev *lcdev, + struct led_pattern *pattern, u32 len, int repeat) +{ + struct led_classdev_mc *mccdev = lcdev_to_mccdev(lcdev); + struct mt6370_led *led = container_of(mccdev, struct mt6370_led, mc); + struct mt6370_priv *priv = led->priv; + struct mc_subled *subled; + unsigned int reg_base, enable, disable; + u8 params[P_MAX_PATTERNS / 2]; + int i, ret; + + mutex_lock(&priv->lock); + + ret = mt6370_gen_breath_pattern(priv, pattern, len, params, + sizeof(params)); + if (ret) + goto out; + + ret = regmap_field_read(priv->fields[F_RGB_EN], &enable); + if (ret) + goto out; + + disable = enable; + + for (i = 0; i < mccdev->num_colors; i++) { + subled = mccdev->subled_info + i; + + mt6370_get_breath_reg_base(priv, subled->channel, &reg_base); + disable &= ~MT6370_CHEN_BIT(subled->channel); + + ret = regmap_raw_write(priv->regmap, reg_base, params, + sizeof(params)); + if (ret) + goto out; + + ret = mt6370_set_led_mode(priv, subled->channel, + MT6370_LED_BREATH_MODE); + if (ret) + goto out; + } + + /* Toggle to make pattern timing be the same */ + ret = regmap_field_write(priv->fields[F_RGB_EN], disable); + if (ret) + goto out; + + ret = regmap_field_write(priv->fields[F_RGB_EN], enable); + +out: + mutex_unlock(&priv->lock); + + return ret; +} + +static inline int mt6370_mc_pattern_clear(struct led_classdev *lcdev) +{ + struct led_classdev_mc *mccdev = lcdev_to_mccdev(lcdev); + struct mt6370_led *led = container_of(mccdev, struct mt6370_led, mc); + struct mt6370_priv *priv = led->priv; + struct mc_subled *subled; + int i, ret = 0; + + mutex_lock(&led->priv->lock); + + for (i = 0; i < mccdev->num_colors; i++) { + subled = mccdev->subled_info + i; + + ret = mt6370_set_led_mode(priv, subled->channel, + MT6370_LED_REG_MODE); + if (ret) + break; + } + + mutex_unlock(&led->priv->lock); + + return ret; +} + +static int mt6370_isnk_brightness_set(struct led_classdev *lcdev, + enum led_brightness level) +{ + struct mt6370_led *led = container_of(lcdev, struct mt6370_led, isink); + struct mt6370_priv *priv = led->priv; + unsigned int enable; + int ret; + + mutex_lock(&priv->lock); + + ret = regmap_field_read(priv->fields[F_RGB_EN], &enable); + if (ret) + goto out; + + if (level == LED_OFF) { + enable &= ~MT6370_CHEN_BIT(led->index); + + ret = mt6370_set_led_mode(priv, led->index, + MT6370_LED_REG_MODE); + if (ret) + goto out; + + ret = regmap_field_write(priv->fields[F_RGB_EN], enable); + } else { + enable |= MT6370_CHEN_BIT(led->index); + + ret = mt6370_set_led_brightness(priv, led->index, level); + if (ret) + goto out; + + ret = regmap_field_write(priv->fields[F_RGB_EN], enable); + } + +out: + mutex_unlock(&priv->lock); + + return ret; +} + +static int mt6370_isnk_blink_set(struct led_classdev *lcdev, + unsigned long *delay_on, + unsigned long *delay_off) +{ + struct mt6370_led *led = container_of(lcdev, struct mt6370_led, isink); + struct mt6370_priv *priv = led->priv; + int ret; + + mutex_lock(&priv->lock); + + if (!*delay_on && !*delay_off) + *delay_on = *delay_off = 500; + + ret = mt6370_set_led_duty(priv, led->index, *delay_on, *delay_off); + if (ret) + goto out; + + ret = mt6370_set_led_freq(priv, led->index, *delay_on, *delay_off); + if (ret) + goto out; + + ret = mt6370_set_led_mode(priv, led->index, MT6370_LED_PWM_MODE); + +out: + mutex_unlock(&priv->lock); + + return ret; +} + +static int mt6370_isnk_pattern_set(struct led_classdev *lcdev, + struct led_pattern *pattern, u32 len, + int repeat) +{ + struct mt6370_led *led = container_of(lcdev, struct mt6370_led, isink); + struct mt6370_priv *priv = led->priv; + unsigned int reg_base; + u8 params[P_MAX_PATTERNS / 2]; + int ret; + + mutex_lock(&priv->lock); + + ret = mt6370_gen_breath_pattern(priv, pattern, len, params, + sizeof(params)); + if (ret) + goto out; + + mt6370_get_breath_reg_base(priv, led->index, &reg_base); + + ret = regmap_raw_write(priv->regmap, reg_base, params, sizeof(params)); + if (ret) + goto out; + + ret = mt6370_set_led_mode(priv, led->index, MT6370_LED_BREATH_MODE); + +out: + mutex_unlock(&priv->lock); + + return ret; +} + +static inline int mt6370_isnk_pattern_clear(struct led_classdev *lcdev) +{ + struct mt6370_led *led = container_of(lcdev, struct mt6370_led, isink); + struct mt6370_priv *priv = led->priv; + int ret; + + mutex_lock(&led->priv->lock); + ret = mt6370_set_led_mode(priv, led->index, MT6370_LED_REG_MODE); + mutex_unlock(&led->priv->lock); + + return ret; +} + +static int mt6370_init_led_properties(struct mt6370_led *led, + struct led_init_data *init_data) +{ + struct mt6370_priv *priv = led->priv; + struct led_classdev *lcdev; + struct fwnode_handle *child; + enum mt6370_led_ranges sel_range; + u32 max_uA, max_level; + const char * const states[] = { "off", "keep", "on" }; + const char *stat_str; + int ret; + + if (led->index == MT6370_VIRTUAL_MULTICOLOR) { + struct mc_subled *sub_led; + u32 num_color = 0; + + sub_led = devm_kzalloc(priv->dev, + sizeof(*sub_led) * MC_CHANNEL_NUM, + GFP_KERNEL); + if (!sub_led) + return -ENOMEM; + + fwnode_for_each_child_node(init_data->fwnode, child) { + u32 reg, color; + + ret = fwnode_property_read_u32(child, "reg", &reg); + if (ret || reg > MT6370_LED_ISNK3 || + priv->leds_active & BIT(reg)) + return -EINVAL; + + ret = fwnode_property_read_u32(child, "color", &color); + if (ret) { + dev_err(priv->dev, + "led %d, no color specified\n", + led->index); + return ret; + } + + priv->leds_active |= BIT(reg); + sub_led[num_color].color_index = color; + sub_led[num_color].channel = reg; + num_color++; + } + + if (num_color < 2) { + dev_err(priv->dev, + "Multicolor must include 2 or more led channel\n"); + return -EINVAL; + } + + led->mc.num_colors = num_color; + led->mc.subled_info = sub_led; + + lcdev = &led->mc.led_cdev; + lcdev->brightness_set_blocking = mt6370_mc_brightness_set; + lcdev->blink_set = mt6370_mc_blink_set; + lcdev->pattern_set = mt6370_mc_pattern_set; + lcdev->pattern_clear = mt6370_mc_pattern_clear; + } else { + lcdev = &led->isink; + lcdev->brightness_set_blocking = mt6370_isnk_brightness_set; + lcdev->blink_set = mt6370_isnk_blink_set; + lcdev->pattern_set = mt6370_isnk_pattern_set; + lcdev->pattern_clear = mt6370_isnk_pattern_clear; + } + + ret = fwnode_property_read_u32(init_data->fwnode, "led-max-microamp", + &max_uA); + if (ret) { + dev_warn(priv->dev, + "Not specified led-max-microamp, config to the minimum\n"); + max_uA = 0; + } + + if (led->index == MT6370_LED_ISNK4) + sel_range = R_LED4_CURR; + else + sel_range = R_LED123_CURR; + + linear_range_get_selector_within(priv->ranges + sel_range, max_uA, + &max_level); + + lcdev->max_brightness = max_level; + + fwnode_property_read_string(init_data->fwnode, "linux,default-trigger", + &lcdev->default_trigger); + + if (!fwnode_property_read_string(init_data->fwnode, "default-state", + &stat_str)) { + ret = match_string(states, ARRAY_SIZE(states), stat_str); + if (ret < 0) + ret = STATE_OFF; + + led->default_state = ret; + } + + return 0; +} + +static int mt6370_isnk_init_default_state(struct mt6370_led *led) +{ + struct mt6370_priv *priv = led->priv; + unsigned int enable, level; + int ret; + + ret = mt6370_get_led_brightness(priv, led->index, &level); + if (ret) + return ret; + + ret = regmap_field_read(priv->fields[F_RGB_EN], &enable); + if (ret) + return ret; + + if (!(enable & MT6370_CHEN_BIT(led->index))) + level = LED_OFF; + + switch (led->default_state) { + case STATE_ON: + led->isink.brightness = led->isink.max_brightness; + break; + case STATE_KEEP: + led->isink.brightness = min(level, led->isink.max_brightness); + break; + default: + led->isink.brightness = LED_OFF; + } + + return mt6370_isnk_brightness_set(&led->isink, led->isink.brightness); +} + +static int mt6370_led_register(struct device *parent, struct mt6370_led *led, + struct led_init_data *init_data) +{ + struct mt6370_priv *priv = led->priv; + int ret; + + if (led->index == MT6370_VIRTUAL_MULTICOLOR) { + ret = mt6370_mc_brightness_set(&led->mc.led_cdev, LED_OFF); + if (ret) { + dev_err(parent, "Couldn't set multicolor brightness\n"); + return ret; + } + + ret = devm_led_classdev_multicolor_register_ext(parent, + &led->mc, + init_data); + if (ret) { + dev_err(parent, "Couldn't register multicolor\n"); + return ret; + } + } else { + if (led->index == MT6370_LED_ISNK4) { + ret = regmap_field_write(priv->fields[F_CHGIND_EN], 1); + if (ret) { + dev_err(parent, "Failed to set CHRIND to SW\n"); + return ret; + } + } + + ret = mt6370_isnk_init_default_state(led); + if (ret) { + dev_err(parent, "Failed to init %d isnk state\n", + led->index); + return ret; + } + + ret = devm_led_classdev_register_ext(parent, &led->isink, + init_data); + if (ret) { + dev_err(parent, "Couldn't register isink %d\n", + led->index); + return ret; + } + } + + return 0; +} + +static int mt6370_check_vendor_info(struct mt6370_priv *priv) +{ + unsigned int devinfo, vid; + int ret; + + ret = regmap_read(priv->regmap, MT6370_REG_DEV_INFO, &devinfo); + if (ret) + return ret; + + vid = FIELD_GET(MT6370_VENID_MASK, devinfo); + if (vid == 0x9 || vid == 0xb) { + priv->reg_fields = mt6372_reg_fields; + priv->ranges = mt6372_led_ranges; + priv->is_mt6372 = true; + } else { + priv->reg_fields = common_reg_fields; + priv->ranges = common_led_ranges; + } + + return 0; +} + +static int mt6370_leds_probe(struct platform_device *pdev) +{ + struct mt6370_priv *priv; + struct fwnode_handle *child; + size_t count; + int i = 0, ret; + + count = device_get_child_node_count(&pdev->dev); + if (!count || count > MT6370_MAX_LEDS) { + dev_err(&pdev->dev, + "No child node or node count over max led number %zu\n", + count); + return -EINVAL; + } + + priv = devm_kzalloc(&pdev->dev, + struct_size(priv, leds, count), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->leds_count = count; + priv->dev = &pdev->dev; + mutex_init(&priv->lock); + + priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!priv->regmap) { + dev_err(&pdev->dev, "Failed to get parent 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; + } + + ret = devm_regmap_field_bulk_alloc(&pdev->dev, priv->regmap, + priv->fields, priv->reg_fields, + F_MAX_FIELDS); + if (ret) { + dev_err(&pdev->dev, "Failed to allocate regmap field\n"); + return ret; + } + + device_for_each_child_node(&pdev->dev, child) { + struct mt6370_led *led = priv->leds + i++; + struct led_init_data init_data = { .fwnode = child, }; + u32 reg, color; + + ret = fwnode_property_read_u32(child, "reg", &reg); + if (ret) { + dev_err(&pdev->dev, "Failed to parse reg property\n"); + return ret; + } + + if (reg >= MT6370_MAX_LEDS) { + dev_err(&pdev->dev, "Error reg property number\n"); + return -EINVAL; + } + + ret = fwnode_property_read_u32(child, "color", &color); + if (ret) { + dev_err(&pdev->dev, "Failed to parse color property\n"); + return ret; + } + + if (color == LED_COLOR_ID_RGB || color == LED_COLOR_ID_MULTI) + reg = MT6370_VIRTUAL_MULTICOLOR; + + if (priv->leds_active & BIT(reg)) { + dev_err(&pdev->dev, "Duplicat reg property\n"); + return -EINVAL; + } + + priv->leds_active |= BIT(reg); + + led->index = reg; + led->priv = priv; + + ret = mt6370_init_led_properties(led, &init_data); + if (ret) + return ret; + + ret = mt6370_led_register(&pdev->dev, led, &init_data); + if (ret) + return ret; + } + + return 0; +} + +static const struct of_device_id mt6370_rgbled_device_table[] = { + { .compatible = "mediatek,mt6370-indicator", }, + {} +}; +MODULE_DEVICE_TABLE(of, mt6370_rgbled_device_table); + +static struct platform_driver mt6370_rgbled_driver = { + .driver = { + .name = "mt6370-indicator", + .of_match_table = mt6370_rgbled_device_table, + }, + .probe = mt6370_leds_probe, +}; +module_platform_driver(mt6370_rgbled_driver); + +MODULE_AUTHOR("Alice Chen alice_chen@richtek.com"); +MODULE_DESCRIPTION("Mediatek MT6370 RGB Led Driver"); +MODULE_LICENSE("GPL v2");

From: Alice Chen alice_chen@richtek.com

Add Mediatek MT6370 flashlight support

Signed-off-by: Alice Chen alice_chen@richtek.com --- drivers/leds/flash/Kconfig | 9 + drivers/leds/flash/Makefile | 1 + drivers/leds/flash/leds-mt6370-flash.c | 665 +++++++++++++++++++++++++ 3 files changed, 675 insertions(+) create mode 100644 drivers/leds/flash/leds-mt6370-flash.c

diff --git a/drivers/leds/flash/Kconfig b/drivers/leds/flash/Kconfig index d3eb689b193c..d38e263aaf09 100644 --- a/drivers/leds/flash/Kconfig +++ b/drivers/leds/flash/Kconfig @@ -90,4 +90,13 @@ config LEDS_SGM3140 This option enables support for the SGM3140 500mA Buck/Boost Charge Pump LED Driver.

+config LEDS_MT6370_FLASHLIGHT + tristate "Flash LED Support for Mediatek MT6370 PMIC" + depends on LEDS_CLASS + depends on MFD_MT6370 + help + Support 2 channels and torch/strobe mode. + Say Y here to enable support for + MT6370_FLASH_LED device. + endif # LEDS_CLASS_FLASH diff --git a/drivers/leds/flash/Makefile b/drivers/leds/flash/Makefile index 0acbddc0b91b..4c4c1710f506 100644 --- a/drivers/leds/flash/Makefile +++ b/drivers/leds/flash/Makefile @@ -9,3 +9,4 @@ obj-$(CONFIG_LEDS_MAX77693) += leds-max77693.o obj-$(CONFIG_LEDS_RT4505) += leds-rt4505.o obj-$(CONFIG_LEDS_RT8515) += leds-rt8515.o obj-$(CONFIG_LEDS_SGM3140) += leds-sgm3140.o +obj-$(CONFIG_LEDS_MT6370_FLASHLIGHT) += leds-mt6370-flash.o diff --git a/drivers/leds/flash/leds-mt6370-flash.c b/drivers/leds/flash/leds-mt6370-flash.c new file mode 100644 index 000000000000..8f6796aae3e1 --- /dev/null +++ b/drivers/leds/flash/leds-mt6370-flash.c @@ -0,0 +1,665 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/bitops.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/led-class-flash.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/platform_device.h> +#include <linux/property.h> +#include <linux/regmap.h> +#include <media/v4l2-flash-led-class.h> +enum { + MT6370_LED_FLASH1, + MT6370_LED_FLASH2, + MT6370_MAX_LEDS +}; + +/* Virtual definition for multicolor */ + +#define MT6370_REG_FLEDEN 0x17E +#define MT6370_REG_STRBTO 0x173 +#define MT6370_REG_CHGSTAT2 0x1D1 +#define MT6370_REG_FLEDSTAT1 0x1D9 +#define MT6370_REG_FLEDISTRB(_id) (0x174 + 4 * _id) +#define MT6370_REG_FLEDITOR(_id) (0x175 + 4 * _id) +#define MT6370_ITORCH_MASK GENMASK(4, 0) +#define MT6370_ISTROBE_MASK GENMASK(6, 0) +#define MT6370_STRBTO_MASK GENMASK(6, 0) +#define MT6370_TORCHEN_MASK BIT(3) +#define MT6370_STROBEN_MASK BIT(2) +#define MT6370_FLCSEN_MASK(_id) BIT(MT6370_LED_FLASH2 - _id) +#define MT6370_FLCSEN_MASK_ALL (BIT(0) | BIT(1)) +#define MT6370_FLEDCHGVINOVP_MASK BIT(3) +#define MT6370_FLED1STRBTO_MASK BIT(11) +#define MT6370_FLED2STRBTO_MASK BIT(10) +#define MT6370_FLED1STRB_MASK BIT(9) +#define MT6370_FLED2STRB_MASK BIT(8) +#define MT6370_FLED1SHORT_MASK BIT(7) +#define MT6370_FLED2SHORT_MASK BIT(6) +#define MT6370_FLEDLVF_MASK BIT(3) + +#define MT6370_LED_JOINT 2 +#define MT6370_RANGE_FLED_REG 4 +#define MT6370_ITORCH_MINUA 25000 +#define MT6370_ITORCH_STEPUA 12500 +#define MT6370_ITORCH_MAXUA 400000 +#define MT6370_ITORCH_DOUBLE_MAXUA 800000 +#define MT6370_ISTRB_MINUA 50000 +#define MT6370_ISTRB_STEPUA 12500 +#define MT6370_ISTRB_MAXUA 1500000 +#define MT6370_ISTRB_DOUBLE_MAXUA 3000000 +#define MT6370_STRBTO_MINUS 64000 +#define MT6370_STRBTO_STEPUS 32000 +#define MT6370_STRBTO_MAXUS 2432000 + +#define STATE_OFF 0 +#define STATE_KEEP 1 +#define STATE_ON 2 + +struct mt6370_led { + struct led_classdev_flash flash; + struct v4l2_flash *v4l2_flash; + struct mt6370_priv *priv; + u32 led_no; + u32 default_state; +}; + +struct mt6370_priv { + struct device *dev; + struct regmap *regmap; + struct mutex lock; + unsigned int fled_strobe_used; + unsigned int fled_torch_used; + unsigned int leds_active; + unsigned int leds_count; + struct mt6370_led leds[]; +}; + +static int mt6370_torch_brightness_set(struct led_classdev *lcdev, + enum led_brightness level) +{ + struct mt6370_led *led = + container_of(lcdev, struct mt6370_led, flash.led_cdev); + struct mt6370_priv *priv = led->priv; + u32 led_enable_mask = (led->led_no == MT6370_LED_JOINT) ? + MT6370_FLCSEN_MASK_ALL : + MT6370_FLCSEN_MASK(led->led_no); + u32 enable_mask = MT6370_TORCHEN_MASK | led_enable_mask; + u32 val = level ? led_enable_mask : 0; + u32 prev = priv->fled_torch_used, curr; + int ret, i; + + mutex_lock(&priv->lock); + + /* + * Only one set of flash control logic, + * use the flag to avoid strobe is currently used. + */ + if (priv->fled_strobe_used) { + dev_warn(lcdev->dev, "Please disable strobe first [%d]\n", + priv->fled_strobe_used); + ret = -EBUSY; + goto unlock; + } + + if (level) + curr = prev | BIT(led->led_no); + else + curr = prev & ~BIT(led->led_no); + + if (curr) + val |= MT6370_TORCHEN_MASK; + + + if (level) { + level -= 1; + if (led->led_no == MT6370_LED_JOINT) { + int flevel[MT6370_MAX_LEDS]; + + flevel[0] = level / 2; + flevel[1] = level - flevel[0]; + for (i = 0; i < MT6370_MAX_LEDS; i++) { + ret = regmap_update_bits(priv->regmap, + MT6370_REG_FLEDITOR(i), + MT6370_ITORCH_MASK, flevel[i]); + if (ret) + goto unlock; + } + } else { + ret = regmap_update_bits(priv->regmap, + MT6370_REG_FLEDITOR(led->led_no), + MT6370_ITORCH_MASK, level); + if (ret) + goto unlock; + } + } + + ret = regmap_update_bits(priv->regmap, MT6370_REG_FLEDEN, + enable_mask, val); + if (ret) + goto unlock; + + priv->fled_torch_used = curr; + +unlock: + mutex_unlock(&priv->lock); + return ret; +} + +static int mt6370_flash_brightness_set(struct led_classdev_flash *fl_cdev, + u32 brightness) +{ + /* + * Due to the current spike when turning on flash, + * let brightness to be kept by framework. + * This empty function is used to + * prevent led_classdev_flash register ops check failure. + */ + return 0; +} + +static int _mt6370_flash_brightness_set(struct led_classdev_flash *fl_cdev, + u32 brightness) +{ + struct mt6370_led *led = container_of(fl_cdev, struct mt6370_led, + flash); + struct mt6370_priv *priv = led->priv; + struct led_flash_setting *s = &fl_cdev->brightness; + u32 val = (brightness - s->min) / s->step; + int ret, i; + + if (led->led_no == MT6370_LED_JOINT) { + int flevel[MT6370_MAX_LEDS]; + + flevel[0] = val / 2; + flevel[1] = val - flevel[0]; + for (i = 0; i < MT6370_MAX_LEDS; i++) { + ret = regmap_update_bits(priv->regmap, + MT6370_REG_FLEDISTRB(i), + MT6370_ISTROBE_MASK, flevel[i]); + if (ret) + return ret; + } + } else { + ret = regmap_update_bits(priv->regmap, + MT6370_REG_FLEDISTRB(led->led_no), + MT6370_ISTROBE_MASK, val); + if (ret) + return ret; + } + return ret; +} + +static int mt6370_strobe_set(struct led_classdev_flash *fl_cdev, bool state) +{ + struct mt6370_led *led = container_of(fl_cdev, struct mt6370_led, + flash); + struct mt6370_priv *priv = led->priv; + struct led_classdev *lcdev = &fl_cdev->led_cdev; + struct led_flash_setting *s = &fl_cdev->brightness; + u32 led_enable_mask = (led->led_no == MT6370_LED_JOINT) ? + MT6370_FLCSEN_MASK_ALL : + MT6370_FLCSEN_MASK(led->led_no); + u32 enable_mask = MT6370_STROBEN_MASK | led_enable_mask; + u32 val = state ? led_enable_mask : 0; + u32 prev = priv->fled_strobe_used, curr; + int ret; + + mutex_lock(&priv->lock); + + /* + * Only one set of flash control logic, + * use the flag to avoid torch is currently used + */ + if (priv->fled_torch_used) { + dev_warn(lcdev->dev, "Please disable torch first [0x%x]\n", + priv->fled_torch_used); + ret = -EBUSY; + goto unlock; + } + + if (state) + curr = prev | BIT(led->led_no); + else + curr = prev & ~BIT(led->led_no); + + if (curr) + val |= MT6370_STROBEN_MASK; + + ret = regmap_update_bits(priv->regmap, MT6370_REG_FLEDEN, enable_mask, + val); + if (ret) { + dev_err(lcdev->dev, "[%d] control current source %d fail\n", + led->led_no, state); + goto unlock; + } + + /* + * If the flash need to be on, + * config the flash current ramping up to the setting value + * Else, always recover back to the minimum one + */ + ret = _mt6370_flash_brightness_set(fl_cdev, state ? s->val : s->min); + if (ret) + goto unlock; + + /* + * For the flash turn on/off, HW rampping up/down time is 5ms/500us, + * respectively + */ + if (!prev && curr) + usleep_range(5000, 6000); + else if (prev && !curr) + udelay(500); + + priv->fled_strobe_used = curr; + +unlock: + mutex_unlock(&priv->lock); + return ret; +} + +static int mt6370_strobe_get(struct led_classdev_flash *fl_cdev, bool *state) +{ + struct mt6370_led *led = container_of(fl_cdev, struct mt6370_led, + flash); + struct mt6370_priv *priv = led->priv; + + mutex_lock(&priv->lock); + *state = !!(priv->fled_strobe_used & BIT(led->led_no)); + mutex_unlock(&priv->lock); + + return 0; +} + +static int mt6370_timeout_set(struct led_classdev_flash *fl_cdev, u32 timeout) +{ + struct mt6370_led *led = container_of(fl_cdev, struct mt6370_led, + flash); + struct mt6370_priv *priv = led->priv; + struct led_flash_setting *s = &fl_cdev->timeout; + u32 val = (timeout - s->min) / s->step; + int ret; + + mutex_lock(&priv->lock); + ret = regmap_update_bits(priv->regmap, MT6370_REG_STRBTO, + MT6370_STRBTO_MASK, val); + mutex_unlock(&priv->lock); + + return ret; +} + +static int mt6370_fault_get(struct led_classdev_flash *fl_cdev, u32 *fault) +{ + struct mt6370_led *led = container_of(fl_cdev, struct mt6370_led, + flash); + struct mt6370_priv *priv = led->priv; + u16 fled_stat; + unsigned int chg_stat, strobe_timeout_mask, fled_short_mask; + u32 rfault = 0; + int ret; + + mutex_lock(&priv->lock); + ret = regmap_read(priv->regmap, MT6370_REG_CHGSTAT2, &chg_stat); + if (ret) + goto unlock; + + ret = regmap_raw_read(priv->regmap, MT6370_REG_FLEDSTAT1, &fled_stat, + sizeof(fled_stat)); + if (ret) + goto unlock; + + switch (led->led_no) { + case MT6370_LED_FLASH1: + strobe_timeout_mask = MT6370_FLED1STRBTO_MASK; + fled_short_mask = MT6370_FLED1SHORT_MASK; + break; + + case MT6370_LED_FLASH2: + strobe_timeout_mask = MT6370_FLED2STRBTO_MASK; + fled_short_mask = MT6370_FLED2SHORT_MASK; + break; + + case MT6370_LED_JOINT: + strobe_timeout_mask = MT6370_FLED1STRBTO_MASK | + MT6370_FLED2STRBTO_MASK; + fled_short_mask = MT6370_FLED1SHORT_MASK | + MT6370_FLED2SHORT_MASK; + } + + if (chg_stat & MT6370_FLEDCHGVINOVP_MASK) + rfault |= LED_FAULT_INPUT_VOLTAGE; + + if (fled_stat & strobe_timeout_mask) + rfault |= LED_FAULT_TIMEOUT; + + if (fled_stat & fled_short_mask) + rfault |= LED_FAULT_SHORT_CIRCUIT; + + if (fled_stat & MT6370_FLEDLVF_MASK) + rfault |= LED_FAULT_UNDER_VOLTAGE; + + *fault = rfault; +unlock: + mutex_unlock(&priv->lock); + return ret; +} + +static const struct led_flash_ops mt6370_flash_ops = { + .flash_brightness_set = mt6370_flash_brightness_set, + .strobe_set = mt6370_strobe_set, + .strobe_get = mt6370_strobe_get, + .timeout_set = mt6370_timeout_set, + .fault_get = mt6370_fault_get, +}; + +#if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS) +static int mt6370_flash_external_strobe_set(struct v4l2_flash *v4l2_flash, + bool enable) +{ + struct led_classdev_flash *flash = v4l2_flash->fled_cdev; + struct mt6370_led *led = container_of(flash, struct mt6370_led, flash); + struct mt6370_priv *priv = led->priv; + u32 mask = (led->led_no == MT6370_LED_JOINT) ? MT6370_FLCSEN_MASK_ALL : + MT6370_FLCSEN_MASK(led->led_no); + u32 val = enable ? mask : 0; + int ret; + + mutex_lock(&priv->lock); + ret = regmap_update_bits(priv->regmap, MT6370_REG_FLEDEN, mask, val); + if (ret) + goto unlock; + + if (enable) + priv->fled_strobe_used |= BIT(led->led_no); + else + priv->fled_strobe_used &= ~BIT(led->led_no); + +unlock: + mutex_unlock(&priv->lock); + return ret; +} + +static const struct v4l2_flash_ops v4l2_flash_ops = { + .external_strobe_set = mt6370_flash_external_strobe_set, +}; + +static void mt6370_init_v4l2_flash_config(struct mt6370_led *led, + struct v4l2_flash_config *config) +{ + struct led_classdev *lcdev; + struct led_flash_setting *s = &config->intensity; + + lcdev = &led->flash.led_cdev; + + s->min = MT6370_ITORCH_MINUA; + s->step = MT6370_ITORCH_STEPUA; + s->val = s->max = s->min + (lcdev->max_brightness - 1) * s->step; + + config->has_external_strobe = 1; + strscpy(config->dev_name, lcdev->dev->kobj.name, + sizeof(config->dev_name)); + + config->flash_faults = LED_FAULT_SHORT_CIRCUIT | LED_FAULT_TIMEOUT | + LED_FAULT_INPUT_VOLTAGE | + LED_FAULT_UNDER_VOLTAGE; +} +#else +static const struct v4l2_flash_ops v4l2_flash_ops; +static void mt6370_init_v4l2_flash_config(struct mt6370_led *led, + struct v4l2_flash_config *config) +{ +} +#endif + +static int mt6370_led_register(struct device *parent, struct mt6370_led *led, + struct led_init_data *init_data) +{ + struct v4l2_flash_config v4l2_config = {0}; + int ret; + + ret = devm_led_classdev_flash_register_ext(parent, &led->flash, + init_data); + if (ret) { + dev_err(parent, "Couldn't register flash %d\n", led->led_no); + return ret; + } + + mt6370_init_v4l2_flash_config(led, &v4l2_config); + led->v4l2_flash = v4l2_flash_init(parent, init_data->fwnode, + &led->flash, &v4l2_flash_ops, + &v4l2_config); + if (IS_ERR(led->v4l2_flash)) { + dev_err(parent, "Failed to register %d v4l2 sd\n", led->led_no); + return PTR_ERR(led->v4l2_flash); + } + + return 0; +} + +static u32 clamp_align(u32 val, u32 min, u32 max, u32 step) +{ + u32 retval; + + retval = clamp_val(val, min, max); + if (step > 1) + retval = rounddown(retval - min, step) + min; + + return retval; +} + +static int mt6370_init_flash_properties(struct mt6370_led *led, + struct led_init_data *init_data) +{ + struct led_classdev_flash *flash = &led->flash; + struct led_classdev *lcdev = &flash->led_cdev; + struct mt6370_priv *priv = led->priv; + struct led_flash_setting *s; + u32 sources[MT6370_MAX_LEDS]; + u32 max_uA, val; + int i, ret, num; + + num = fwnode_property_count_u32(init_data->fwnode, "led-sources"); + if (num < 1 || num > MT6370_MAX_LEDS) { + dev_err(priv->dev, + "Not specified or wrong number of led-sources\n"); + return -EINVAL; + } + + ret = fwnode_property_read_u32_array(init_data->fwnode, + "led-sources", sources, num); + if (ret) + return ret; + + for (i = 0; i < num; i++) { + if (sources[i] >= MT6370_MAX_LEDS) + return -EINVAL; + if (priv->leds_active & BIT(sources[i])) + return -EINVAL; + priv->leds_active |= BIT(sources[i]); + + } + led->led_no = (num == MT6370_MAX_LEDS) ? MT6370_LED_JOINT : + sources[0]; + + max_uA = (num == 2) ? MT6370_ITORCH_DOUBLE_MAXUA : MT6370_ITORCH_MAXUA; + ret = fwnode_property_read_u32(init_data->fwnode, "led-max-microamp", + &val); + if (ret) { + dev_warn(priv->dev, + "Not specified led-max-microamp, config to the minimum\n"); + val = MT6370_ITORCH_MINUA; + } else + val = clamp_align(val, MT6370_ITORCH_MINUA, max_uA, + MT6370_ITORCH_STEPUA); + + lcdev->max_brightness = (val - MT6370_ITORCH_MINUA) / + MT6370_ITORCH_STEPUA + 1; + lcdev->brightness_set_blocking = mt6370_torch_brightness_set; + lcdev->flags |= LED_DEV_CAP_FLASH; + + max_uA = (num == 2) ? MT6370_ISTRB_DOUBLE_MAXUA : MT6370_ISTRB_MAXUA; + ret = fwnode_property_read_u32(init_data->fwnode, "flash-max-microamp", + &val); + if (ret) { + dev_warn(priv->dev, + "Not specified flash-max-microamp, config to the minimum\n"); + val = MT6370_ISTRB_MINUA; + } else + val = clamp_align(val, MT6370_ISTRB_MINUA, max_uA, + MT6370_ISTRB_STEPUA); + + s = &flash->brightness; + s->min = MT6370_ISTRB_MINUA; + s->step = MT6370_ISTRB_STEPUA; + s->val = s->max = val; + + /* + * Always configure as min level when off to + * prevent flash current spike + */ + ret = _mt6370_flash_brightness_set(flash, s->min); + if (ret) + return ret; + + ret = fwnode_property_read_u32(init_data->fwnode, + "flash-max-timeout-us", &val); + if (ret) { + dev_warn(priv->dev, + "Not specified flash-max-timeout-us, config to the minimum\n"); + val = MT6370_STRBTO_MINUS; + } else + val = clamp_align(val, MT6370_STRBTO_MINUS, MT6370_STRBTO_MAXUS, + MT6370_STRBTO_STEPUS); + + + s = &flash->timeout; + s->min = MT6370_STRBTO_MINUS; + s->step = MT6370_STRBTO_STEPUS; + s->val = s->max = val; + + flash->ops = &mt6370_flash_ops; + + return 0; +} + +static int mt6370_init_common_properties(struct mt6370_led *led, + struct led_init_data *init_data) +{ + const char * const states[] = { "off", "keep", "on" }; + const char *str; + int ret; + + if (!fwnode_property_read_string(init_data->fwnode, + "default-state", &str)) { + ret = match_string(states, ARRAY_SIZE(states), str); + if (ret < 0) + ret = STATE_OFF; + + led->default_state = ret; + } + + return 0; +} + +static void mt6370_v4l2_flash_release(struct mt6370_priv *priv) +{ + int i; + + for (i = 0; i < priv->leds_count; i++) { + struct mt6370_led *led = priv->leds + i; + + if (led->v4l2_flash) + v4l2_flash_release(led->v4l2_flash); + } +} + +static int mt6370_led_probe(struct platform_device *pdev) +{ + struct mt6370_priv *priv; + struct fwnode_handle *child; + size_t count; + int i = 0, ret; + + count = device_get_child_node_count(&pdev->dev); + if (!count || count > MT6370_MAX_LEDS) { + dev_err(&pdev->dev, + "No child node or node count over max led number %lu\n", count); + return -EINVAL; + } + + priv = devm_kzalloc(&pdev->dev, struct_size(priv, leds, count), + GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->leds_count = count; + priv->dev = &pdev->dev; + mutex_init(&priv->lock); + + priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!priv->regmap) { + dev_err(&pdev->dev, "Failed to get parent regmap\n"); + return -ENODEV; + } + + device_for_each_child_node(&pdev->dev, child) { + struct mt6370_led *led = priv->leds + i; + struct led_init_data init_data = { .fwnode = child, }; + + led->priv = priv; + ret = mt6370_init_common_properties(led, &init_data); + if (ret) + goto out_flash_release; + + ret = mt6370_init_flash_properties(led, &init_data); + + if (ret) + goto out_flash_release; + + ret = mt6370_led_register(&pdev->dev, led, &init_data); + if (ret) + goto out_flash_release; + + i++; + } + + platform_set_drvdata(pdev, priv); + return 0; + +out_flash_release: + mt6370_v4l2_flash_release(priv); + return ret; +} + +static int mt6370_led_remove(struct platform_device *pdev) +{ + struct mt6370_priv *priv = platform_get_drvdata(pdev); + + mt6370_v4l2_flash_release(priv); + return 0; +} + +static const struct of_device_id __maybe_unused mt6370_led_of_id[] = { + { .compatible = "mediatek,mt6370-flashlight", }, + {} +}; +MODULE_DEVICE_TABLE(of, mt6370_led_of_id); + +static struct platform_driver mt6370_led_driver = { + .driver = { + .name = "mt6370-flashlight", + .of_match_table = mt6370_led_of_id, + }, + .probe = mt6370_led_probe, + .remove = mt6370_led_remove, +}; +module_platform_driver(mt6370_led_driver); + +MODULE_AUTHOR("Alice Chen alice_chen@richtek.com"); +MODULE_DESCRIPTION("MT6370 FLASH LED 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 | 8 + drivers/video/backlight/Makefile | 1 + drivers/video/backlight/mt6370-backlight.c | 338 +++++++++++++++++++++ 3 files changed, 347 insertions(+) create mode 100644 drivers/video/backlight/mt6370-backlight.c

diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig index a003e02e13ce..d9868fbe7488 100644 --- a/drivers/video/backlight/Kconfig +++ b/drivers/video/backlight/Kconfig @@ -268,6 +268,14 @@ 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 + Say Y here to enable MT6370 Backlight support. + It's commonly used to drive the display WLED. There're 4 channels + inisde, and each channel can provide up to 30mA current. + 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..f8a8d33203ed --- /dev/null +++ b/drivers/video/backlight/mt6370-backlight.c @@ -0,0 +1,338 @@ +// 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 + +enum { + MT6370_VID_COMMON = 0, + MT6370_VID_6372, + MT6370_VID_MAX, +}; + +enum mt6370_prop_type { + MT6370_PARSE_TYPE_BOOL = 0, + MT6370_PARSE_TYPE_U8, + MT6370_PARSE_TYPE_MAX, +}; + +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); + + 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, +}; + +#define MT6370_DT_PROP_DECL(_name, _type, _reg, _mask, _max, _inv) \ +{ \ + .name = "mediatek,bled-" #_name, \ + .type = MT6370_PARSE_TYPE_##_type, \ + .reg = _reg, \ + .mask = _mask, \ + .max_val = _max, \ + .invert = _inv, \ +} + +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; + static const struct { + char *name; + enum mt6370_prop_type type; + unsigned int reg; + unsigned int mask; + u8 max_val; + bool invert; + } vendor_opt_props[] = { + MT6370_DT_PROP_DECL(pwm-enable, BOOL, MT6370_REG_BL_PWM, + MT6370_BL_PWM_EN_MASK, 1, false), + MT6370_DT_PROP_DECL(pwm-hys-enable, BOOL, MT6370_REG_BL_PWM, + MT6370_BL_PWM_HYS_EN_MASK, 1, false), + MT6370_DT_PROP_DECL(pwm-hys-sel, U8, MT6370_REG_BL_PWM, + MT6370_BL_PWM_HYS_SEL_MASK, 3, false), + MT6370_DT_PROP_DECL(ovp-level-sel, U8, MT6370_REG_BL_BSTCTRL, + MT6370_BL_OVP_SEL_MASK, 3, false), + MT6370_DT_PROP_DECL(ovp-shutdown, BOOL, MT6370_REG_BL_BSTCTRL, + MT6370_BL_OVP_EN_MASK, 1, true), + MT6370_DT_PROP_DECL(ocp-level-sel, U8, MT6370_REG_BL_BSTCTRL, + MT6370_BL_OC_SEL_MASK, 3, false), + MT6370_DT_PROP_DECL(ocp-shutdown, BOOL, MT6370_REG_BL_BSTCTRL, + MT6370_BL_OC_EN_MASK, 1, true), + }, *prop_now; + int i, ret; + + /* vendor optional properties */ + for (i = 0; i < ARRAY_SIZE(vendor_opt_props); i++) { + prop_now = vendor_opt_props + i; + + switch (prop_now->type) { + case MT6370_PARSE_TYPE_BOOL: + if (device_property_read_bool(dev, prop_now->name)) + val = 1; + else + val = 0; + break; + case MT6370_PARSE_TYPE_U8: + ret = device_property_read_u8(dev, prop_now->name, + &prop_val); + /* Property not exist, keep value in default */ + if (ret) + continue; + + val = min_t(u8, prop_val, prop_now->max_val); + break; + default: + return -EINVAL; + } + + if (prop_now->invert) + val = prop_now->max_val - val; + + val <<= ffs(prop_now->mask) - 1; + + ret = regmap_update_bits(priv->regmap, prop_now->reg, + prop_now->mask, val); + 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) { + dev_err(dev, "No channel specified\n"); + 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) +{ + 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(&pdev->dev, "Failed to get 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->enable_gpio = devm_gpiod_get_optional(&pdev->dev, "enable", + GPIOD_OUT_HIGH); + if (IS_ERR(priv->enable_gpio)) { + dev_err(&pdev->dev, "Failed to get 'enable' gpio\n"); + return PTR_ERR(priv->enable_gpio); + } + + ret = mt6370_init_backlight_properties(priv, &props); + if (ret) { + dev_err(&pdev->dev, "Failed to init backlight properties\n"); + return ret; + } + + priv->bl = devm_backlight_device_register(&pdev->dev, pdev->name, + &pdev->dev, priv, + &mt6370_bl_ops, &props); + if (IS_ERR(priv->bl)) { + dev_err(&pdev->dev, "Failed to register backlight\n"); + return PTR_ERR(priv->bl); + } + + 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");