diff options
77 files changed, 2438 insertions, 755 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gateworks,pld-gpio.txt b/Documentation/devicetree/bindings/gpio/gateworks,pld-gpio.txt new file mode 100644 index 000000000000..6e81f8b755c5 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gateworks,pld-gpio.txt @@ -0,0 +1,20 @@ +Gateworks PLD GPIO controller bindings + +The GPIO controller should be a child node on an I2C bus, +see: i2c/i2c.txt for details. + +Required properties: +- compatible: Should be "gateworks,pld-gpio" +- reg: I2C slave address +- gpio-controller: Marks the device node as a GPIO controller. +- #gpio-cells: Should be <2>. The first cell is the gpio number and + the second cell is used to specify optional parameters. + +Example: + +pld@56 { + compatible = "gateworks,pld-gpio"; + reg = <0x56>; + gpio-controller; + #gpio-cells = <2>; +}; diff --git a/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt b/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt index 93d98d09d92b..54040a2bfe3a 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt +++ b/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt @@ -33,7 +33,7 @@ Required properties: "sprd,sc9860-eic-latch", "sprd,sc9860-eic-async", "sprd,sc9860-eic-sync", - "sprd,sc27xx-eic". + "sprd,sc2731-eic". - reg: Define the base and range of the I/O address space containing the GPIO controller registers. - gpio-controller: Marks the device node as a GPIO controller. @@ -86,7 +86,7 @@ Example: }; pmic_eic: gpio@300 { - compatible = "sprd,sc27xx-eic"; + compatible = "sprd,sc2731-eic"; reg = <0x300>; interrupt-parent = <&sc2731_pmic>; interrupts = <5 IRQ_TYPE_LEVEL_HIGH>; diff --git a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt index 4e3c550e319a..fb144e2b6522 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt +++ b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt @@ -16,6 +16,7 @@ Required properties: nxp,pca9574 nxp,pca9575 nxp,pca9698 + nxp,pcal6416 nxp,pcal6524 nxp,pcal9555a maxim,max7310 diff --git a/Documentation/devicetree/bindings/gpio/gpio.txt b/Documentation/devicetree/bindings/gpio/gpio.txt index f0ba154b5723..a8895d339bfe 100644 --- a/Documentation/devicetree/bindings/gpio/gpio.txt +++ b/Documentation/devicetree/bindings/gpio/gpio.txt @@ -67,6 +67,18 @@ Optional standard bitfield specifiers for the last cell: https://en.wikipedia.org/wiki/Open_collector - Bit 3: 0 means the output should be maintained during sleep/low-power mode 1 means the output state can be lost during sleep/low-power mode +- Bit 4: 0 means no pull-up resistor should be enabled + 1 means a pull-up resistor should be enabled + This setting only applies to hardware with a simple on/off + control for pull-up configuration. If the hardware has more + elaborate pull-up configuration, it should be represented + using a pin control binding. +- Bit 5: 0 means no pull-down resistor should be enabled + 1 means a pull-down resistor should be enabled + This setting only applies to hardware with a simple on/off + control for pull-down configuration. If the hardware has more + elaborate pull-down configuration, it should be represented + using a pin control binding. 1.1) GPIO specifier best practices ---------------------------------- diff --git a/Documentation/devicetree/bindings/gpio/intel,ixp4xx-gpio.txt b/Documentation/devicetree/bindings/gpio/intel,ixp4xx-gpio.txt new file mode 100644 index 000000000000..8dc41ed99685 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/intel,ixp4xx-gpio.txt @@ -0,0 +1,38 @@ +Intel IXP4xx XScale Networking Processors GPIO + +This GPIO controller is found in the Intel IXP4xx processors. +It supports 16 GPIO lines. + +The interrupt portions of the GPIO controller is hierarchical: +the synchronous edge detector is part of the GPIO block, but the +actual enabling/disabling of the interrupt line is done in the +main IXP4xx interrupt controller which has a 1:1 mapping for +the first 12 GPIO lines to 12 system interrupts. + +The remaining 4 GPIO lines can not be used for receiving +interrupts. + +The interrupt parent of this GPIO controller must be the +IXP4xx interrupt controller. + +Required properties: + +- compatible : Should be + "intel,ixp4xx-gpio" +- reg : Should contain registers location and length +- gpio-controller : marks this as a GPIO controller +- #gpio-cells : Should be 2, see gpio/gpio.txt +- interrupt-controller : marks this as an interrupt controller +- #interrupt-cells : a standard two-cell interrupt, see + interrupt-controller/interrupts.txt + +Example: + +gpio0: gpio@c8004000 { + compatible = "intel,ixp4xx-gpio"; + reg = <0xc8004000 0x1000>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; +}; diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt index 759aa1732e48..7f64a7e92c28 100644 --- a/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt +++ b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt @@ -19,6 +19,7 @@ PMIC's from Qualcomm. "qcom,pm8998-gpio" "qcom,pma8084-gpio" "qcom,pmi8994-gpio" + "qcom,pmi8998-gpio" "qcom,pms405-gpio" And must contain either "qcom,spmi-gpio" or "qcom,ssbi-gpio" diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index aaa18bb1a9f4..385d22460b1d 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -145,6 +145,7 @@ focaltech FocalTech Systems Co.,Ltd friendlyarm Guangzhou FriendlyARM Computer Tech Co., Ltd fsl Freescale Semiconductor fujitsu Fujitsu Ltd. +gateworks Gateworks Corporation gcw Game Consoles Worldwide ge General Electric Company geekbuying GeekBuying diff --git a/Documentation/driver-api/gpio/board.rst b/Documentation/driver-api/gpio/board.rst index a0f294e2e250..b37f3f7b8926 100644 --- a/Documentation/driver-api/gpio/board.rst +++ b/Documentation/driver-api/gpio/board.rst @@ -204,6 +204,7 @@ between a caller and a respective .get/set_multiple() callback of a GPIO chip. In order to qualify for fast bitmap processing, the array must meet the following requirements: + - pin hardware number of array member 0 must also be 0, - pin hardware numbers of consecutive array members which belong to the same chip as member 0 does must also match their array indexes. diff --git a/Documentation/driver-api/gpio/driver.rst b/Documentation/driver-api/gpio/driver.rst index a92d8837b62b..3043167fc557 100644 --- a/Documentation/driver-api/gpio/driver.rst +++ b/Documentation/driver-api/gpio/driver.rst @@ -135,7 +135,7 @@ This configuration is normally used as a way to achieve one of two things: - inverse wire-OR on an I/O line, for example a GPIO line, making it possible for any driving stage on the line to drive it low even if any other output to the same line is simultaneously driving it high. A special case of this - is driving the SCL and SCA lines of an I2C bus, which is by definition a + is driving the SCL and SDA lines of an I2C bus, which is by definition a wire-OR bus. Both usecases require that the line be equipped with a pull-up resistor. This diff --git a/Documentation/driver-api/gpio/legacy.rst b/Documentation/driver-api/gpio/legacy.rst index 5e9421e05f1d..9bc34ba697d9 100644 --- a/Documentation/driver-api/gpio/legacy.rst +++ b/Documentation/driver-api/gpio/legacy.rst @@ -690,11 +690,10 @@ and have the following read/write attributes: and if it has been configured to generate interrupts (see the description of "edge"), you can poll(2) on that file and poll(2) will return whenever the interrupt was triggered. If - you use poll(2), set the events POLLPRI and POLLERR. If you - use select(2), set the file descriptor in exceptfds. After - poll(2) returns, either lseek(2) to the beginning of the sysfs - file and read the new value or close the file and re-open it - to read the value. + you use poll(2), set the events POLLPRI. If you use select(2), + set the file descriptor in exceptfds. After poll(2) returns, + either lseek(2) to the beginning of the sysfs file and read the + new value or close the file and re-open it to read the value. "edge" ... reads as either "none", "rising", "falling", or "both". Write these strings to select the signal edge(s) diff --git a/MAINTAINERS b/MAINTAINERS index e261ca14ebd0..21ab06488be8 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -766,6 +766,13 @@ S: Supported F: Documentation/hwmon/fam15h_power F: drivers/hwmon/fam15h_power.c +AMD FCH GPIO DRIVER +M: Enrico Weigelt, metux IT consult <info@metux.net> +L: linux-gpio@vger.kernel.org +S: Maintained +F: drivers/gpio/gpio-amd-fch.c +F: include/linux/platform_data/gpio/gpio-amd-fch.h + AMD GEODE CS5536 USB DEVICE CONTROLLER DRIVER L: linux-geode@lists.infradead.org (moderated for non-subscribers) S: Orphan @@ -11716,6 +11723,11 @@ F: lib/parman.c F: lib/test_parman.c F: include/linux/parman.h +PC ENGINES APU BOARD DRIVER +M: Enrico Weigelt, metux IT consult <info@metux.net> +S: Maintained +F: drivers/platform/x86/pcengines-apuv2.c + PC87360 HARDWARE MONITORING DRIVER M: Jim Cromie <jim.cromie@gmail.com> L: linux-hwmon@vger.kernel.org diff --git a/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts b/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts index 497bb065eb9d..4e6c50d45cb2 100644 --- a/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts +++ b/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts @@ -93,9 +93,8 @@ vdd-supply = <&pm8058_l14>; // 2.85V aset-gpios = <&pm8058_gpio 35 GPIO_ACTIVE_LOW>; capella,aset-resistance-ohms = <100000>; - /* GPIO34 has interrupt 225 on the PM8058 */ /* Trig on both edges - getting close or far away */ - interrupts-extended = <&pm8058 225 IRQ_TYPE_EDGE_BOTH>; + interrupts-extended = <&pm8058_gpio 34 IRQ_TYPE_EDGE_BOTH>; /* MPP05 analog input to the XOADC */ io-channels = <&xoadc 0x00 0x05>; io-channel-names = "aout"; @@ -515,9 +514,8 @@ ak8975@c { compatible = "asahi-kasei,ak8975"; reg = <0x0c>; - /* FIXME: GPIO33 has interrupt 224 on the PM8058 */ - interrupt-parent = <&pm8058>; - interrupts = <224 IRQ_TYPE_EDGE_RISING>; + interrupt-parent = <&pm8058_gpio>; + interrupts = <33 IRQ_TYPE_EDGE_RISING>; pinctrl-names = "default"; pinctrl-0 = <&dragon_ak8975_gpios>; vid-supply = <&pm8058_lvs0>; // 1.8V @@ -526,9 +524,8 @@ bmp085@77 { compatible = "bosch,bmp085"; reg = <0x77>; - /* FIXME: GPIO16 has interrupt 207 on the PM8058 */ - interrupt-parent = <&pm8058>; - interrupts = <207 IRQ_TYPE_EDGE_RISING>; + interrupt-parent = <&pm8058_gpio>; + interrupts = <16 IRQ_TYPE_EDGE_RISING>; reset-gpios = <&tlmm 86 GPIO_ACTIVE_LOW>; pinctrl-names = "default"; pinctrl-0 = <&dragon_bmp085_gpios>; @@ -539,12 +536,11 @@ compatible = "invensense,mpu3050"; reg = <0x68>; /* - * GPIO17 has interrupt 208 on the - * PM8058, it is pulled high by a 10k + * GPIO17 is pulled high by a 10k * resistor to VLOGIC so needs to be * active low/falling edge. */ - interrupts-extended = <&pm8058 208 IRQ_TYPE_EDGE_FALLING>; + interrupts-extended = <&pm8058_gpio 17 IRQ_TYPE_EDGE_FALLING>; pinctrl-names = "default"; pinctrl-0 = <&dragon_mpu3050_gpios>; vlogic-supply = <&pm8058_lvs0>; // 1.8V @@ -589,11 +585,10 @@ compatible = "smsc,lan9221", "smsc,lan9115"; reg = <2 0x0 0x100>; /* - * GPIO7 has interrupt 198 on the PM8058 * The second interrupt is the PME interrupt * for network wakeup, connected to the TLMM. */ - interrupts-extended = <&pm8058 198 IRQ_TYPE_EDGE_FALLING>, + interrupts-extended = <&pm8058_gpio 7 IRQ_TYPE_EDGE_FALLING>, <&tlmm 29 IRQ_TYPE_EDGE_RISING>; reset-gpios = <&tlmm 30 GPIO_ACTIVE_LOW>; vdd33a-supply = <&dragon_veth>; diff --git a/arch/arm/boot/dts/qcom-apq8064.dtsi b/arch/arm/boot/dts/qcom-apq8064.dtsi index 1374c2e52c20..bd6907db615b 100644 --- a/arch/arm/boot/dts/qcom-apq8064.dtsi +++ b/arch/arm/boot/dts/qcom-apq8064.dtsi @@ -711,50 +711,8 @@ compatible = "qcom,pm8921-gpio", "qcom,ssbi-gpio"; reg = <0x150>; - interrupts = <192 IRQ_TYPE_NONE>, - <193 IRQ_TYPE_NONE>, - <194 IRQ_TYPE_NONE>, - <195 IRQ_TYPE_NONE>, - <196 IRQ_TYPE_NONE>, - <197 IRQ_TYPE_NONE>, - <198 IRQ_TYPE_NONE>, - <199 IRQ_TYPE_NONE>, - <200 IRQ_TYPE_NONE>, - <201 IRQ_TYPE_NONE>, - <202 IRQ_TYPE_NONE>, - <203 IRQ_TYPE_NONE>, - <204 IRQ_TYPE_NONE>, - <205 IRQ_TYPE_NONE>, - <206 IRQ_TYPE_NONE>, - <207 IRQ_TYPE_NONE>, - <208 IRQ_TYPE_NONE>, - <209 IRQ_TYPE_NONE>, - <210 IRQ_TYPE_NONE>, - <211 IRQ_TYPE_NONE>, - <212 IRQ_TYPE_NONE>, - <213 IRQ_TYPE_NONE>, - <214 IRQ_TYPE_NONE>, - <215 IRQ_TYPE_NONE>, - <216 IRQ_TYPE_NONE>, - <217 IRQ_TYPE_NONE>, - <218 IRQ_TYPE_NONE>, - <219 IRQ_TYPE_NONE>, - <220 IRQ_TYPE_NONE>, - <221 IRQ_TYPE_NONE>, - <222 IRQ_TYPE_NONE>, - <223 IRQ_TYPE_NONE>, - <224 IRQ_TYPE_NONE>, - <225 IRQ_TYPE_NONE>, - <226 IRQ_TYPE_NONE>, - <227 IRQ_TYPE_NONE>, - <228 IRQ_TYPE_NONE>, - <229 IRQ_TYPE_NONE>, - <230 IRQ_TYPE_NONE>, - <231 IRQ_TYPE_NONE>, - <232 IRQ_TYPE_NONE>, - <233 IRQ_TYPE_NONE>, - <234 IRQ_TYPE_NONE>, - <235 IRQ_TYPE_NONE>; + interrupt-controller; + #interrupt-cells = <2>; gpio-controller; #gpio-cells = <2>; diff --git a/arch/arm/boot/dts/qcom-mdm9615.dtsi b/arch/arm/boot/dts/qcom-mdm9615.dtsi index e49f67ad5dbc..02afc6a42005 100644 --- a/arch/arm/boot/dts/qcom-mdm9615.dtsi +++ b/arch/arm/boot/dts/qcom-mdm9615.dtsi @@ -323,13 +323,8 @@ pmicgpio: gpio@150 { compatible = "qcom,pm8018-gpio", "qcom,ssbi-gpio"; - interrupt-parent = <&pmicintc>; - interrupts = <24 IRQ_TYPE_NONE>, - <25 IRQ_TYPE_NONE>, - <26 IRQ_TYPE_NONE>, - <27 IRQ_TYPE_NONE>, - <28 IRQ_TYPE_NONE>, - <29 IRQ_TYPE_NONE>; + interrupt-controller; + #interrupt-cells = <2>; gpio-controller; #gpio-cells = <2>; }; diff --git a/arch/arm/boot/dts/qcom-msm8660.dtsi b/arch/arm/boot/dts/qcom-msm8660.dtsi index 993107ed1476..65a994f0e09b 100644 --- a/arch/arm/boot/dts/qcom-msm8660.dtsi +++ b/arch/arm/boot/dts/qcom-msm8660.dtsi @@ -292,51 +292,8 @@ compatible = "qcom,pm8058-gpio", "qcom,ssbi-gpio"; reg = <0x150>; - interrupt-parent = <&pm8058>; - interrupts = <192 IRQ_TYPE_NONE>, - <193 IRQ_TYPE_NONE>, - <194 IRQ_TYPE_NONE>, - <195 IRQ_TYPE_NONE>, - <196 IRQ_TYPE_NONE>, - <197 IRQ_TYPE_NONE>, - <198 IRQ_TYPE_NONE>, - <199 IRQ_TYPE_NONE>, - <200 IRQ_TYPE_NONE>, - <201 IRQ_TYPE_NONE>, - <202 IRQ_TYPE_NONE>, - <203 IRQ_TYPE_NONE>, - <204 IRQ_TYPE_NONE>, - <205 IRQ_TYPE_NONE>, - <206 IRQ_TYPE_NONE>, - <207 IRQ_TYPE_NONE>, - <208 IRQ_TYPE_NONE>, - <209 IRQ_TYPE_NONE>, - <210 IRQ_TYPE_NONE>, - <211 IRQ_TYPE_NONE>, - <212 IRQ_TYPE_NONE>, - <213 IRQ_TYPE_NONE>, - <214 IRQ_TYPE_NONE>, - <215 IRQ_TYPE_NONE>, - <216 IRQ_TYPE_NONE>, - <217 IRQ_TYPE_NONE>, - <218 IRQ_TYPE_NONE>, - <219 IRQ_TYPE_NONE>, - <220 IRQ_TYPE_NONE>, - <221 IRQ_TYPE_NONE>, - <222 IRQ_TYPE_NONE>, - <223 IRQ_TYPE_NONE>, - <224 IRQ_TYPE_NONE>, - <225 IRQ_TYPE_NONE>, - <226 IRQ_TYPE_NONE>, - <227 IRQ_TYPE_NONE>, - <228 IRQ_TYPE_NONE>, - <229 IRQ_TYPE_NONE>, - <230 IRQ_TYPE_NONE>, - <231 IRQ_TYPE_NONE>, - <232 IRQ_TYPE_NONE>, - <233 IRQ_TYPE_NONE>, - <234 IRQ_TYPE_NONE>, - <235 IRQ_TYPE_NONE>; + interrupt-controller; + #interrupt-cells = <2>; gpio-controller; #gpio-cells = <2>; diff --git a/arch/arm/boot/dts/qcom-pm8941.dtsi b/arch/arm/boot/dts/qcom-pm8941.dtsi index 9a91b758f7aa..f198480c8ef4 100644 --- a/arch/arm/boot/dts/qcom-pm8941.dtsi +++ b/arch/arm/boot/dts/qcom-pm8941.dtsi @@ -65,42 +65,8 @@ gpio-controller; gpio-ranges = <&pm8941_gpios 0 0 36>; #gpio-cells = <2>; - interrupts = <0 0xc0 0 IRQ_TYPE_NONE>, - <0 0xc1 0 IRQ_TYPE_NONE>, - <0 0xc2 0 IRQ_TYPE_NONE>, - <0 0xc3 0 IRQ_TYPE_NONE>, - <0 0xc4 0 IRQ_TYPE_NONE>, - <0 0xc5 0 IRQ_TYPE_NONE>, - <0 0xc6 0 IRQ_TYPE_NONE>, - <0 0xc7 0 IRQ_TYPE_NONE>, - <0 0xc8 0 IRQ_TYPE_NONE>, - <0 0xc9 0 IRQ_TYPE_NONE>, - <0 0xca 0 IRQ_TYPE_NONE>, - <0 0xcb 0 IRQ_TYPE_NONE>, - <0 0xcc 0 IRQ_TYPE_NONE>, - <0 0xcd 0 IRQ_TYPE_NONE>, - <0 0xce 0 IRQ_TYPE_NONE>, - <0 0xcf 0 IRQ_TYPE_NONE>, - <0 0xd0 0 IRQ_TYPE_NONE>, - <0 0xd1 0 IRQ_TYPE_NONE>, - <0 0xd2 0 IRQ_TYPE_NONE>, - <0 0xd3 0 IRQ_TYPE_NONE>, - <0 0xd4 0 IRQ_TYPE_NONE>, - <0 0xd5 0 IRQ_TYPE_NONE>, - <0 0xd6 0 IRQ_TYPE_NONE>, - <0 0xd7 0 IRQ_TYPE_NONE>, - <0 0xd8 0 IRQ_TYPE_NONE>, - <0 0xd9 0 IRQ_TYPE_NONE>, - <0 0xda 0 IRQ_TYPE_NONE>, - <0 0xdb 0 IRQ_TYPE_NONE>, - <0 0xdc 0 IRQ_TYPE_NONE>, - <0 0xdd 0 IRQ_TYPE_NONE>, - <0 0xde 0 IRQ_TYPE_NONE>, - <0 0xdf 0 IRQ_TYPE_NONE>, - <0 0xe0 0 IRQ_TYPE_NONE>, - <0 0xe1 0 IRQ_TYPE_NONE>, - <0 0xe2 0 IRQ_TYPE_NONE>, - <0 0xe3 0 IRQ_TYPE_NONE>; + interrupt-controller; + #interrupt-cells = <2>; boost_bypass_n_pin: boost-bypass { pins = "gpio21"; diff --git a/arch/arm/boot/dts/qcom-pma8084.dtsi b/arch/arm/boot/dts/qcom-pma8084.dtsi index aac7e73b6872..8f5ea7add20f 100644 --- a/arch/arm/boot/dts/qcom-pma8084.dtsi +++ b/arch/arm/boot/dts/qcom-pma8084.dtsi @@ -32,28 +32,8 @@ reg = <0xc000>; gpio-controller; #gpio-cells = <2>; - interrupts = <0 0xc0 0 IRQ_TYPE_NONE>, - <0 0xc1 0 IRQ_TYPE_NONE>, - <0 0xc2 0 IRQ_TYPE_NONE>, - <0 0xc3 0 IRQ_TYPE_NONE>, - <0 0xc4 0 IRQ_TYPE_NONE>, - <0 0xc5 0 IRQ_TYPE_NONE>, - <0 0xc6 0 IRQ_TYPE_NONE>, - <0 0xc7 0 IRQ_TYPE_NONE>, - <0 0xc8 0 IRQ_TYPE_NONE>, - <0 0xc9 0 IRQ_TYPE_NONE>, - <0 0xca 0 IRQ_TYPE_NONE>, - <0 0xcb 0 IRQ_TYPE_NONE>, - <0 0xcc 0 IRQ_TYPE_NONE>, - <0 0xcd 0 IRQ_TYPE_NONE>, - <0 0xce 0 IRQ_TYPE_NONE>, - <0 0xcf 0 IRQ_TYPE_NONE>, - <0 0xd0 0 IRQ_TYPE_NONE>, - <0 0xd1 0 IRQ_TYPE_NONE>, - <0 0xd2 0 IRQ_TYPE_NONE>, - <0 0xd3 0 IRQ_TYPE_NONE>, - <0 0xd4 0 IRQ_TYPE_NONE>, - <0 0xd5 0 IRQ_TYPE_NONE>; + interrupt-controller; + #interrupt-cells = <2>; }; pma8084_mpps: mpps@a000 { diff --git a/arch/arm/mach-sa1100/simpad.c b/arch/arm/mach-sa1100/simpad.c index 406487e76a5c..c7fb9a73e4c5 100644 --- a/arch/arm/mach-sa1100/simpad.c +++ b/arch/arm/mach-sa1100/simpad.c @@ -18,7 +18,6 @@ #include <linux/mtd/partitions.h> #include <linux/io.h> #include <linux/gpio/driver.h> -#include <linux/gpio/machine.h> #include <mach/hardware.h> #include <asm/setup.h> diff --git a/arch/arm64/boot/dts/qcom/pm8005.dtsi b/arch/arm64/boot/dts/qcom/pm8005.dtsi index 4d5aca3eeb69..c0ddf128136c 100644 --- a/arch/arm64/boot/dts/qcom/pm8005.dtsi +++ b/arch/arm64/boot/dts/qcom/pm8005.dtsi @@ -16,10 +16,8 @@ reg = <0xc000>; gpio-controller; #gpio-cells = <2>; - interrupts = <0 0xc0 0 IRQ_TYPE_NONE>, - <0 0xc1 0 IRQ_TYPE_NONE>, - <0 0xc2 0 IRQ_TYPE_NONE>, - <0 0xc3 0 IRQ_TYPE_NONE>; + interrupt-controller; + #interrupt-cells = <2>; }; }; diff --git a/arch/arm64/boot/dts/qcom/pm8998.dtsi b/arch/arm64/boot/dts/qcom/pm8998.dtsi index f1025a50c227..43cb5ea14089 100644 --- a/arch/arm64/boot/dts/qcom/pm8998.dtsi +++ b/arch/arm64/boot/dts/qcom/pm8998.dtsi @@ -94,32 +94,8 @@ reg = <0xc000>; gpio-controller; #gpio-cells = <2>; - interrupts = <0 0xc0 0 IRQ_TYPE_NONE>, - <0 0xc1 0 IRQ_TYPE_NONE>, - <0 0xc2 0 IRQ_TYPE_NONE>, - <0 0xc3 0 IRQ_TYPE_NONE>, - <0 0xc4 0 IRQ_TYPE_NONE>, - <0 0xc5 0 IRQ_TYPE_NONE>, - <0 0xc6 0 IRQ_TYPE_NONE>, - <0 0xc7 0 IRQ_TYPE_NONE>, - <0 0xc8 0 IRQ_TYPE_NONE>, - <0 0xc9 0 IRQ_TYPE_NONE>, - <0 0xca 0 IRQ_TYPE_NONE>, - <0 0xcb 0 IRQ_TYPE_NONE>, - <0 0xcc 0 IRQ_TYPE_NONE>, - <0 0xcd 0 IRQ_TYPE_NONE>, - <0 0xce 0 IRQ_TYPE_NONE>, - <0 0xcf 0 IRQ_TYPE_NONE>, - <0 0xd0 0 IRQ_TYPE_NONE>, - <0 0xd1 0 IRQ_TYPE_NONE>, - <0 0xd2 0 IRQ_TYPE_NONE>, - <0 0xd3 0 IRQ_TYPE_NONE>, - <0 0xd4 0 IRQ_TYPE_NONE>, - <0 0xd5 0 IRQ_TYPE_NONE>, - <0 0xd6 0 IRQ_TYPE_NONE>, - <0 0xd7 0 IRQ_TYPE_NONE>, - <0 0xd8 0 IRQ_TYPE_NONE>, - <0 0xd9 0 IRQ_TYPE_NONE>; + interrupt-controller; + #interrupt-cells = <2>; }; }; diff --git a/arch/arm64/boot/dts/qcom/pmi8994.dtsi b/arch/arm64/boot/dts/qcom/pmi8994.dtsi index dae1cdc23f54..3aee10e3f921 100644 --- a/arch/arm64/boot/dts/qcom/pmi8994.dtsi +++ b/arch/arm64/boot/dts/qcom/pmi8994.dtsi @@ -15,16 +15,8 @@ reg = <0xc000>; gpio-controller; #gpio-cells = <2>; - interrupts = <2 0xc0 0 IRQ_TYPE_NONE>, - <2 0xc1 0 IRQ_TYPE_NONE>, - <2 0xc2 0 IRQ_TYPE_NONE>, - <2 0xc3 0 IRQ_TYPE_NONE>, - <2 0xc4 0 IRQ_TYPE_NONE>, - <2 0xc5 0 IRQ_TYPE_NONE>, - <2 0xc6 0 IRQ_TYPE_NONE>, - <2 0xc7 0 IRQ_TYPE_NONE>, - <2 0xc8 0 IRQ_TYPE_NONE>, - <2 0xc9 0 IRQ_TYPE_NONE>; + interrupt-controller; + #interrupt-cells = <2>; }; }; diff --git a/arch/arm64/boot/dts/qcom/pmi8998.dtsi b/arch/arm64/boot/dts/qcom/pmi8998.dtsi index da3285e216e2..051f57e7d6ac 100644 --- a/arch/arm64/boot/dts/qcom/pmi8998.dtsi +++ b/arch/arm64/boot/dts/qcom/pmi8998.dtsi @@ -14,20 +14,8 @@ reg = <0xc000>; gpio-controller; #gpio-cells = <2>; - interrupts = <0 0xc0 0 IRQ_TYPE_NONE>, - <0 0xc1 0 IRQ_TYPE_NONE>, - <0 0xc2 0 IRQ_TYPE_NONE>, - <0 0xc3 0 IRQ_TYPE_NONE>, - <0 0xc4 0 IRQ_TYPE_NONE>, - <0 0xc5 0 IRQ_TYPE_NONE>, - <0 0xc6 0 IRQ_TYPE_NONE>, - <0 0xc7 0 IRQ_TYPE_NONE>, - <0 0xc8 0 IRQ_TYPE_NONE>, - <0 0xc9 0 IRQ_TYPE_NONE>, - <0 0xca 0 IRQ_TYPE_NONE>, - <0 0xcb 0 IRQ_TYPE_NONE>, - <0 0xcc 0 IRQ_TYPE_NONE>, - <0 0xcd 0 IRQ_TYPE_NONE>; + interrupt-controller; + #interrupt-cells = <2>; }; }; diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 4e45ac21d672..dab0a5abc391 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -80,6 +80,26 @@ struct resource *platform_get_resource(struct platform_device *dev, EXPORT_SYMBOL_GPL(platform_get_resource); /** + * devm_platform_ioremap_resource - call devm_ioremap_resource() for a platform + * device + * + * @pdev: platform device to use both for memory resource lookup as well as + * resource managemend + * @index: resource index + */ +#ifdef CONFIG_HAS_IOMEM +void __iomem *devm_platform_ioremap_resource(struct platform_device *pdev, + unsigned int index) +{ + struct resource *res; + + res = platform_get_resource(pdev, IORESOURCE_MEM, index); + return devm_ioremap_resource(&pdev->dev, res); +} +EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource); +#endif /* CONFIG_HAS_IOMEM */ + +/** * platform_get_irq - get an IRQ for a device * @dev: platform device * @num: IRQ number index diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index b5a2845347ec..3f50526a771f 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -258,6 +258,7 @@ config GPIO_HLWD tristate "Nintendo Wii (Hollywood) GPIO" depends on OF_GPIO select GPIO_GENERIC + select GPIOLIB_IRQCHIP help Select this to support the GPIO controller of the Nintendo Wii. @@ -654,6 +655,15 @@ config GPIO_LOONGSON1 help Say Y or M here to support GPIO on Loongson1 SoCs. +config GPIO_AMD_FCH + tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)" + help + This option enables driver for GPIO on AMDs Fusion Controller Hub, + as found on G-series SOCs (eg. GX-412TC) + + Note: This driver doesn't registers itself automatically, as it + needs to be provided with platform specific configuration. + (See eg. CONFIG_PCENGINES_APU2.) endmenu menu "Port-mapped I/O GPIO drivers" @@ -830,6 +840,13 @@ config GPIO_ADNP enough to represent all pins, but the driver will assume a register layout for 64 pins (8 registers). +config GPIO_GW_PLD + tristate "Gateworks PLD GPIO Expander" + depends on OF_GPIO + help + Say yes here to provide access to the Gateworks I2C PLD GPIO + Expander. This is used at least on the Cambria GW2358-4. + config GPIO_MAX7300 tristate "Maxim MAX7300 GPIO expander" select GPIO_MAX730X @@ -1190,6 +1207,13 @@ config GPIO_TPS68470 of the TPS68470 must be available before dependent drivers are loaded. +config GPIO_TQMX86 + tristate "TQ-Systems QTMX86 GPIO" + depends on MFD_TQMX86 || COMPILE_TEST + select GPIOLIB_IRQCHIP + help + This driver supports GPIO on the TQMX86 IO controller. + config GPIO_TWL4030 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs" depends on TWL4030_CORE diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 37628f8dbf70..54d55274b93a 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -27,6 +27,7 @@ obj-$(CONFIG_GPIO_ADP5520) += gpio-adp5520.o obj-$(CONFIG_GPIO_ADP5588) += gpio-adp5588.o obj-$(CONFIG_GPIO_ALTERA) += gpio-altera.o obj-$(CONFIG_GPIO_ALTERA_A10SR) += gpio-altera-a10sr.o +obj-$(CONFIG_GPIO_AMD_FCH) += gpio-amd-fch.o obj-$(CONFIG_GPIO_AMD8111) += gpio-amd8111.o obj-$(CONFIG_GPIO_AMDPT) += gpio-amdpt.o obj-$(CONFIG_GPIO_ARIZONA) += gpio-arizona.o @@ -55,6 +56,7 @@ obj-$(CONFIG_GPIO_FTGPIO010) += gpio-ftgpio010.o obj-$(CONFIG_GPIO_GE_FPGA) += gpio-ge.o obj-$(CONFIG_GPIO_GPIO_MM) += gpio-gpio-mm.o obj-$(CONFIG_GPIO_GRGPIO) += gpio-grgpio.o +obj-$(CONFIG_GPIO_GW_PLD) += gpio-gw-pld.o obj-$(CONFIG_GPIO_HLWD) += gpio-hlwd.o obj-$(CONFIG_HTC_EGPIO) += gpio-htc-egpio.o obj-$(CONFIG_GPIO_ICH) += gpio-ich.o @@ -135,6 +137,7 @@ obj-$(CONFIG_GPIO_TPS6586X) += gpio-tps6586x.o obj-$(CONFIG_GPIO_TPS65910) += gpio-tps65910.o obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o obj-$(CONFIG_GPIO_TPS68470) += gpio-tps68470.o +obj-$(CONFIG_GPIO_TQMX86) += gpio-tqmx86.o obj-$(CONFIG_GPIO_TS4800) += gpio-ts4800.o obj-$(CONFIG_GPIO_TS4900) += gpio-ts4900.o obj-$(CONFIG_GPIO_TS5500) += gpio-ts5500.o diff --git a/drivers/gpio/gpio-adp5588.c b/drivers/gpio/gpio-adp5588.c index cc33d8986ad3..c4a5b499f53e 100644 --- a/drivers/gpio/gpio-adp5588.c +++ b/drivers/gpio/gpio-adp5588.c @@ -15,6 +15,7 @@ #include <linux/gpio/driver.h> #include <linux/interrupt.h> #include <linux/irq.h> +#include <linux/of_device.h> #include <linux/platform_data/adp5588.h> @@ -33,16 +34,13 @@ struct adp5588_gpio { struct mutex lock; /* protect cached dir, dat_out */ /* protect serialized access to the interrupt controller bus */ struct mutex irq_lock; - unsigned gpio_start; - unsigned irq_base; uint8_t dat_out[3]; uint8_t dir[3]; - uint8_t int_lvl[3]; + uint8_t int_lvl_low[3]; + uint8_t int_lvl_high[3]; uint8_t int_en[3]; uint8_t irq_mask[3]; - uint8_t irq_stat[3]; uint8_t int_input_en[3]; - uint8_t int_lvl_cached[3]; }; static int adp5588_gpio_read(struct i2c_client *client, u8 reg) @@ -148,16 +146,11 @@ static int adp5588_gpio_direction_output(struct gpio_chip *chip, } #ifdef CONFIG_GPIO_ADP5588_IRQ -static int adp5588_gpio_to_irq(struct gpio_chip *chip, unsigned off) -{ - struct adp5588_gpio *dev = gpiochip_get_data(chip); - - return dev->irq_base + off; -} static void adp5588_irq_bus_lock(struct irq_data *d) { - struct adp5588_gpio *dev = irq_data_get_irq_chip_data(d); + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct adp5588_gpio *dev = gpiochip_get_data(gc); mutex_lock(&dev->irq_lock); } @@ -172,7 +165,8 @@ static void adp5588_irq_bus_lock(struct irq_data *d) static void adp5588_irq_bus_sync_unlock(struct irq_data *d) { - struct adp5588_gpio *dev = irq_data_get_irq_chip_data(d); + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct adp5588_gpio *dev = gpiochip_get_data(gc); int i; for (i = 0; i <= ADP5588_BANK(ADP5588_MAXGPIO); i++) { @@ -185,15 +179,9 @@ static void adp5588_irq_bus_sync_unlock(struct irq_data *d) mutex_unlock(&dev->lock); } - if (dev->int_lvl_cached[i] != dev->int_lvl[i]) { - dev->int_lvl_cached[i] = dev->int_lvl[i]; - adp5588_gpio_write(dev->client, GPIO_INT_LVL1 + i, - dev->int_lvl[i]); - } - if (dev->int_en[i] ^ dev->irq_mask[i]) { dev->int_en[i] = dev->irq_mask[i]; - adp5588_gpio_write(dev->client, GPIO_INT_EN1 + i, + adp5588_gpio_write(dev->client, GPI_EM1 + i, dev->int_en[i]); } } @@ -203,41 +191,38 @@ static void adp5588_irq_bus_sync_unlock(struct irq_data *d) static void adp5588_irq_mask(struct irq_data *d) { - struct adp5588_gpio *dev = irq_data_get_irq_chip_data(d); - unsigned gpio = d->irq - dev->irq_base; + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct adp5588_gpio *dev = gpiochip_get_data(gc); - dev->irq_mask[ADP5588_BANK(gpio)] &= ~ADP5588_BIT(gpio); + dev->irq_mask[ADP5588_BANK(d->hwirq)] &= ~ADP5588_BIT(d->hwirq); } static void adp5588_irq_unmask(struct irq_data *d) { - struct adp5588_gpio *dev = irq_data_get_irq_chip_data(d); - unsigned gpio = d->irq - dev->irq_base; + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct adp5588_gpio *dev = gpiochip_get_data(gc); - dev->irq_mask[ADP5588_BANK(gpio)] |= ADP5588_BIT(gpio); + dev->irq_mask[ADP5588_BANK(d->hwirq)] |= ADP5588_BIT(d->hwirq); } static int adp5588_irq_set_type(struct irq_data *d, unsigned int type) { - struct adp5588_gpio *dev = irq_data_get_irq_chip_data(d); - uint16_t gpio = d->irq - dev->irq_base; + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct adp5588_gpio *dev = gpiochip_get_data(gc); + uint16_t gpio = d->hwirq; unsigned bank, bit; - if ((type & IRQ_TYPE_EDGE_BOTH)) { - dev_err(&dev->client->dev, "irq %d: unsupported type %d\n", - d->irq, type); - return -EINVAL; - } - bank = ADP5588_BANK(gpio); bit = ADP5588_BIT(gpio); - if (type & IRQ_TYPE_LEVEL_HIGH) - dev->int_lvl[bank] |= bit; - else if (type & IRQ_TYPE_LEVEL_LOW) - dev->int_lvl[bank] &= ~bit; - else - return -EINVAL; + dev->int_lvl_low[bank] &= ~bit; + dev->int_lvl_high[bank] &= ~bit; + + if (type & IRQ_TYPE_EDGE_BOTH || type & IRQ_TYPE_LEVEL_HIGH) + dev->int_lvl_high[bank] |= bit; + + if (type & IRQ_TYPE_EDGE_BOTH || type & IRQ_TYPE_LEVEL_LOW) + dev->int_lvl_low[bank] |= bit; dev->int_input_en[bank] |= bit; @@ -253,40 +238,32 @@ static struct irq_chip adp5588_irq_chip = { .irq_set_type = adp5588_irq_set_type, }; -static int adp5588_gpio_read_intstat(struct i2c_client *client, u8 *buf) -{ - int ret = i2c_smbus_read_i2c_block_data(client, GPIO_INT_STAT1, 3, buf); - - if (ret < 0) - dev_err(&client->dev, "Read INT_STAT Error\n"); - - return ret; -} - static irqreturn_t adp5588_irq_handler(int irq, void *devid) { struct adp5588_gpio *dev = devid; - unsigned status, bank, bit, pending; - int ret; - status = adp5588_gpio_read(dev->client, INT_STAT); - - if (status & ADP5588_GPI_INT) { - ret = adp5588_gpio_read_intstat(dev->client, dev->irq_stat); - if (ret < 0) - memset(dev->irq_stat, 0, ARRAY_SIZE(dev->irq_stat)); - - for (bank = 0, bit = 0; bank <= ADP5588_BANK(ADP5588_MAXGPIO); - bank++, bit = 0) { - pending = dev->irq_stat[bank] & dev->irq_mask[bank]; - - while (pending) { - if (pending & (1 << bit)) { - handle_nested_irq(dev->irq_base + - (bank << 3) + bit); - pending &= ~(1 << bit); - - } - bit++; + int status = adp5588_gpio_read(dev->client, INT_STAT); + + if (status & ADP5588_KE_INT) { + int ev_cnt = adp5588_gpio_read(dev->client, KEY_LCK_EC_STAT); + + if (ev_cnt > 0) { + int i; + + for (i = 0; i < (ev_cnt & ADP5588_KEC); i++) { + int key = adp5588_gpio_read(dev->client, + Key_EVENTA + i); + /* GPIN events begin at 97, + * bit 7 indicates logic level + */ + int gpio = (key & 0x7f) - 97; + int lvl = key & (1 << 7); + int bank = ADP5588_BANK(gpio); + int bit = ADP5588_BIT(gpio); + + if ((lvl && dev->int_lvl_high[bank] & bit) || + (!lvl && dev->int_lvl_low[bank] & bit)) + handle_nested_irq(irq_find_mapping( + dev->gpio_chip.irq.domain, gpio)); } } } @@ -299,53 +276,42 @@ static irqreturn_t adp5588_irq_handler(int irq, void *devid) static int adp5588_irq_setup(struct adp5588_gpio *dev) { struct i2c_client *client = dev->client; + int ret; struct adp5588_gpio_platform_data *pdata = dev_get_platdata(&client->dev); - unsigned gpio; - int ret; + int irq_base = pdata ? pdata->irq_base : 0; adp5588_gpio_write(client, CFG, ADP5588_AUTO_INC); adp5588_gpio_write(client, INT_STAT, -1); /* status is W1C */ - adp5588_gpio_read_intstat(client, dev->irq_stat); /* read to clear */ - dev->irq_base = pdata->irq_base; mutex_init(&dev->irq_lock); - for (gpio = 0; gpio < dev->gpio_chip.ngpio; gpio++) { - int irq = gpio + dev->irq_base; - irq_set_chip_data(irq, dev); - irq_set_chip_and_handler(irq, &adp5588_irq_chip, - handle_level_irq); - irq_set_nested_thread(irq, 1); - irq_modify_status(irq, IRQ_NOREQUEST, IRQ_NOPROBE); - } - - ret = request_threaded_irq(client->irq, - NULL, - adp5588_irq_handler, - IRQF_TRIGGER_FALLING | IRQF_ONESHOT, - dev_name(&client->dev), dev); + ret = devm_request_threaded_irq(&client->dev, client->irq, + NULL, adp5588_irq_handler, IRQF_ONESHOT + | IRQF_TRIGGER_FALLING | IRQF_SHARED, + dev_name(&client->dev), dev); if (ret) { dev_err(&client->dev, "failed to request irq %d\n", client->irq); - goto out; + return ret; } + ret = gpiochip_irqchip_add_nested(&dev->gpio_chip, + &adp5588_irq_chip, irq_base, + handle_simple_irq, + IRQ_TYPE_NONE); + if (ret) { + dev_err(&client->dev, + "could not connect irqchip to gpiochip\n"); + return ret; + } + gpiochip_set_nested_irqchip(&dev->gpio_chip, + &adp5588_irq_chip, + client->irq); - dev->gpio_chip.to_irq = adp5588_gpio_to_irq; adp5588_gpio_write(client, CFG, - ADP5588_AUTO_INC | ADP5588_INT_CFG | ADP5588_GPI_INT); + ADP5588_AUTO_INC | ADP5588_INT_CFG | ADP5588_KE_IEN); return 0; - -out: - dev->irq_base = 0; - return ret; -} - -static void adp5588_irq_teardown(struct adp5588_gpio *dev) -{ - if (dev->irq_base) - free_irq(dev->client->irq, dev); } #else @@ -357,24 +323,16 @@ static int adp5588_irq_setup(struct adp5588_gpio *dev) return 0; } -static void adp5588_irq_teardown(struct adp5588_gpio *dev) -{ -} #endif /* CONFIG_GPIO_ADP5588_IRQ */ -static int adp5588_gpio_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static int adp5588_gpio_probe(struct i2c_client *client) { struct adp5588_gpio_platform_data *pdata = dev_get_platdata(&client->dev); struct adp5588_gpio *dev; struct gpio_chip *gc; int ret, i, revid; - - if (!pdata) { - dev_err(&client->dev, "missing platform data\n"); - return -ENODEV; - } + unsigned int pullup_dis_mask = 0; if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { @@ -394,18 +352,24 @@ static int adp5588_gpio_probe(struct i2c_client *client, gc->get = adp5588_gpio_get_value; gc->set = adp5588_gpio_set_value; gc->can_sleep = true; + gc->base = -1; + gc->parent = &client->dev; + + if (pdata) { + gc->base = pdata->gpio_start; + gc->names = pdata->names; + pullup_dis_mask = pdata->pullup_dis_mask; + } - gc->base = pdata->gpio_start; gc->ngpio = ADP5588_MAXGPIO; gc->label = client->name; gc->owner = THIS_MODULE; - gc->names = pdata->names; mutex_init(&dev->lock); ret = adp5588_gpio_read(dev->client, DEV_ID); if (ret < 0) - goto err; + return ret; revid = ret & ADP5588_DEVICE_ID_MASK; @@ -414,30 +378,27 @@ static int adp5588_gpio_probe(struct i2c_client *client, dev->dir[i] = adp5588_gpio_read(client, GPIO_DIR1 + i); ret |= adp5588_gpio_write(client, KP_GPIO1 + i, 0); ret |= adp5588_gpio_write(client, GPIO_PULL1 + i, - (pdata->pullup_dis_mask >> (8 * i)) & 0xFF); + (pullup_dis_mask >> (8 * i)) & 0xFF); ret |= adp5588_gpio_write(client, GPIO_INT_EN1 + i, 0); if (ret) - goto err; + return ret; } - if (pdata->irq_base) { + if (client->irq) { if (WA_DELAYED_READOUT_REVID(revid)) { dev_warn(&client->dev, "GPIO int not supported\n"); } else { ret = adp5588_irq_setup(dev); if (ret) - goto err; + return ret; } } ret = devm_gpiochip_add_data(&client->dev, &dev->gpio_chip, dev); if (ret) - goto err_irq; + return ret; - dev_info(&client->dev, "IRQ Base: %d Rev.: %d\n", - pdata->irq_base, revid); - - if (pdata->setup) { + if (pdata && pdata->setup) { ret = pdata->setup(client, gc->base, gc->ngpio, pdata->context); if (ret < 0) dev_warn(&client->dev, "setup failed, %d\n", ret); @@ -446,11 +407,6 @@ static int adp5588_gpio_probe(struct i2c_client *client, i2c_set_clientdata(client, dev); return 0; - -err_irq: - adp5588_irq_teardown(dev); -err: - return ret; } static int adp5588_gpio_remove(struct i2c_client *client) @@ -460,7 +416,7 @@ static int adp5588_gpio_remove(struct i2c_client *client) struct adp5588_gpio *dev = i2c_get_clientdata(client); int ret; - if (pdata->teardown) { + if (pdata && pdata->teardown) { ret = pdata->teardown(client, dev->gpio_chip.base, dev->gpio_chip.ngpio, pdata->context); @@ -470,7 +426,7 @@ static int adp5588_gpio_remove(struct i2c_client *client) } } - if (dev->irq_base) + if (dev->client->irq) free_irq(dev->client->irq, dev); return 0; @@ -480,14 +436,22 @@ static const struct i2c_device_id adp5588_gpio_id[] = { {DRV_NAME, 0}, {} }; - MODULE_DEVICE_TABLE(i2c, adp5588_gpio_id); +#ifdef CONFIG_OF +static const struct of_device_id adp5588_gpio_of_id[] = { + { .compatible = "adi," DRV_NAME, }, + {}, +}; +MODULE_DEVICE_TABLE(of, adp5588_gpio_of_id); +#endif + static struct i2c_driver adp5588_gpio_driver = { .driver = { - .name = DRV_NAME, - }, - .probe = adp5588_gpio_probe, + .name = DRV_NAME, + .of_match_table = of_match_ptr(adp5588_gpio_of_id), + }, + .probe_new = adp5588_gpio_probe, .remove = adp5588_gpio_remove, .id_table = adp5588_gpio_id, }; diff --git a/drivers/gpio/gpio-altera-a10sr.c b/drivers/gpio/gpio-altera-a10sr.c index 7f9e0304b510..1cea4efccf7c 100644 --- a/drivers/gpio/gpio-altera-a10sr.c +++ b/drivers/gpio/gpio-altera-a10sr.c @@ -58,19 +58,20 @@ static void altr_a10sr_gpio_set(struct gpio_chip *chip, unsigned int offset, static int altr_a10sr_gpio_direction_input(struct gpio_chip *gc, unsigned int nr) { - if (nr >= (ALTR_A10SR_IN_VALID_RANGE_LO - ALTR_A10SR_LED_VALID_SHIFT)) - return 0; - return -EINVAL; + if (nr < (ALTR_A10SR_IN_VALID_RANGE_LO - ALTR_A10SR_LED_VALID_SHIFT)) + return -EINVAL; + + return 0; } static int altr_a10sr_gpio_direction_output(struct gpio_chip *gc, unsigned int nr, int value) { - if (nr <= (ALTR_A10SR_OUT_VALID_RANGE_HI - ALTR_A10SR_LED_VALID_SHIFT)) { - altr_a10sr_gpio_set(gc, nr, value); - return 0; - } - return -EINVAL; + if (nr > (ALTR_A10SR_OUT_VALID_RANGE_HI - ALTR_A10SR_LED_VALID_SHIFT)) + return -EINVAL; + + altr_a10sr_gpio_set(gc, nr, value); + return 0; } static const struct gpio_chip altr_a10sr_gc = { diff --git a/drivers/gpio/gpio-altera.c b/drivers/gpio/gpio-altera.c index 8c3ff6e2366f..748fdd4e9a53 100644 --- a/drivers/gpio/gpio-altera.c +++ b/drivers/gpio/gpio-altera.c @@ -32,9 +32,9 @@ * struct altera_gpio_chip * @mmchip : memory mapped chip structure. * @gpio_lock : synchronization lock so that new irq/set/get requests - will be blocked until the current one completes. +* will be blocked until the current one completes. * @interrupt_trigger : specifies the hardware configured IRQ trigger type - (rising, falling, both, high) +* (rising, falling, both, high) * @mapped_irq : kernel mapped irq number. */ struct altera_gpio_chip { diff --git a/drivers/gpio/gpio-amd-fch.c b/drivers/gpio/gpio-amd-fch.c new file mode 100644 index 000000000000..38c3f4a3d4aa --- /dev/null +++ b/drivers/gpio/gpio-amd-fch.c @@ -0,0 +1,194 @@ +// SPDX-License-Identifier: GPL-2.0+ + +/* + * GPIO driver for the AMD G series FCH (eg. GX-412TC) + * + * Copyright (C) 2018 metux IT consult + * Author: Enrico Weigelt, metux IT consult <info@metux.net> + * + */ + +#include <linux/err.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/gpio/driver.h> +#include <linux/platform_data/gpio/gpio-amd-fch.h> +#include <linux/spinlock.h> + +#define AMD_FCH_MMIO_BASE 0xFED80000 +#define AMD_FCH_GPIO_BANK0_BASE 0x1500 +#define AMD_FCH_GPIO_SIZE 0x0300 + +#define AMD_FCH_GPIO_FLAG_DIRECTION BIT(23) +#define AMD_FCH_GPIO_FLAG_WRITE BIT(22) +#define AMD_FCH_GPIO_FLAG_READ BIT(16) + +static struct resource amd_fch_gpio_iores = + DEFINE_RES_MEM_NAMED( + AMD_FCH_MMIO_BASE + AMD_FCH_GPIO_BANK0_BASE, + AMD_FCH_GPIO_SIZE, + "amd-fch-gpio-iomem"); + +struct amd_fch_gpio_priv { + struct platform_device *pdev; + struct gpio_chip gc; + void __iomem *base; + struct amd_fch_gpio_pdata *pdata; + spinlock_t lock; +}; + +static void __iomem *amd_fch_gpio_addr(struct amd_fch_gpio_priv *priv, + unsigned int gpio) +{ + return priv->base + priv->pdata->gpio_reg[gpio]*sizeof(u32); +} + +static int amd_fch_gpio_direction_input(struct gpio_chip *gc, + unsigned int offset) +{ + unsigned long flags; + struct amd_fch_gpio_priv *priv = gpiochip_get_data(gc); + void __iomem *ptr = amd_fch_gpio_addr(priv, offset); + + spin_lock_irqsave(&priv->lock, flags); + writel_relaxed(readl_relaxed(ptr) & ~AMD_FCH_GPIO_FLAG_DIRECTION, ptr); + spin_unlock_irqrestore(&priv->lock, flags); + + return 0; +} + +static int amd_fch_gpio_direction_output(struct gpio_chip *gc, + unsigned int gpio, int value) +{ + unsigned long flags; + struct amd_fch_gpio_priv *priv = gpiochip_get_data(gc); + void __iomem *ptr = amd_fch_gpio_addr(priv, gpio); + u32 val; + + spin_lock_irqsave(&priv->lock, flags); + + val = readl_relaxed(ptr); + if (value) + val |= AMD_FCH_GPIO_FLAG_WRITE; + else + val &= ~AMD_FCH_GPIO_FLAG_WRITE; + + writel_relaxed(val | AMD_FCH_GPIO_FLAG_DIRECTION, ptr); + + spin_unlock_irqrestore(&priv->lock, flags); + + return 0; +} + +static int amd_fch_gpio_get_direction(struct gpio_chip *gc, unsigned int gpio) +{ + int ret; + unsigned long flags; + struct amd_fch_gpio_priv *priv = gpiochip_get_data(gc); + void __iomem *ptr = amd_fch_gpio_addr(priv, gpio); + + spin_lock_irqsave(&priv->lock, flags); + ret = (readl_relaxed(ptr) & AMD_FCH_GPIO_FLAG_DIRECTION); + spin_unlock_irqrestore(&priv->lock, flags); + + return ret; +} + +static void amd_fch_gpio_set(struct gpio_chip *gc, + unsigned int gpio, int value) +{ + unsigned long flags; + struct amd_fch_gpio_priv *priv = gpiochip_get_data(gc); + void __iomem *ptr = amd_fch_gpio_addr(priv, gpio); + u32 mask; + + spin_lock_irqsave(&priv->lock, flags); + + mask = readl_relaxed(ptr); + if (value) + mask |= AMD_FCH_GPIO_FLAG_WRITE; + else + mask &= ~AMD_FCH_GPIO_FLAG_WRITE; + writel_relaxed(mask, ptr); + + spin_unlock_irqrestore(&priv->lock, flags); +} + +static int amd_fch_gpio_get(struct gpio_chip *gc, + unsigned int offset) +{ + unsigned long flags; + int ret; + struct amd_fch_gpio_priv *priv = gpiochip_get_data(gc); + void __iomem *ptr = amd_fch_gpio_addr(priv, offset); + + spin_lock_irqsave(&priv->lock, flags); + ret = (readl_relaxed(ptr) & AMD_FCH_GPIO_FLAG_READ); + spin_unlock_irqrestore(&priv->lock, flags); + + return ret; +} + +static int amd_fch_gpio_request(struct gpio_chip *chip, + unsigned int gpio_pin) +{ + return 0; +} + +static int amd_fch_gpio_probe(struct platform_device *pdev) +{ + struct amd_fch_gpio_priv *priv; + struct amd_fch_gpio_pdata *pdata; + + pdata = dev_get_platdata(&pdev->dev); + if (!pdata) { + dev_err(&pdev->dev, "no platform_data\n"); + return -ENOENT; + } + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->pdata = pdata; + priv->pdev = pdev; + + priv->gc.owner = THIS_MODULE; + priv->gc.parent = &pdev->dev; + priv->gc.label = dev_name(&pdev->dev); + priv->gc.ngpio = priv->pdata->gpio_num; + priv->gc.names = priv->pdata->gpio_names; + priv->gc.base = -1; + priv->gc.request = amd_fch_gpio_request; + priv->gc.direction_input = amd_fch_gpio_direction_input; + priv->gc.direction_output = amd_fch_gpio_direction_output; + priv->gc.get_direction = amd_fch_gpio_get_direction; + priv->gc.get = amd_fch_gpio_get; + priv->gc.set = amd_fch_gpio_set; + + spin_lock_init(&priv->lock); + + priv->base = devm_ioremap_resource(&pdev->dev, &amd_fch_gpio_iores); + if (IS_ERR(priv->base)) + return PTR_ERR(priv->base); + + platform_set_drvdata(pdev, priv); + + return devm_gpiochip_add_data(&pdev->dev, &priv->gc, priv); +} + +static struct platform_driver amd_fch_gpio_driver = { + .driver = { + .name = AMD_FCH_GPIO_DRIVER_NAME, + }, + .probe = amd_fch_gpio_probe, +}; + +module_platform_driver(amd_fch_gpio_driver); + +MODULE_AUTHOR("Enrico Weigelt, metux IT consult <info@metux.net>"); +MODULE_DESCRIPTION("AMD G-series FCH GPIO driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" AMD_FCH_GPIO_DRIVER_NAME); diff --git a/drivers/gpio/gpio-crystalcove.c b/drivers/gpio/gpio-crystalcove.c index 58531d8b8c6e..14d1f4c933b6 100644 --- a/drivers/gpio/gpio-crystalcove.c +++ b/drivers/gpio/gpio-crystalcove.c @@ -1,28 +1,20 @@ +// SPDX-License-Identifier: GPL-2.0 /* - * gpio-crystalcove.c - Intel Crystal Cove GPIO Driver + * Intel Crystal Cove GPIO Driver * * Copyright (C) 2012, 2014 Intel Corporation. All rights reserved. * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * * Author: Yang, Bin <bin.yang@intel.com> */ +#include <linux/bitops.h> +#include <linux/gpio/driver.h> #include <linux/interrupt.h> +#include <linux/mfd/intel_soc_pmic.h> #include <linux/module.h> #include <linux/platform_device.h> -#include <linux/gpio/driver.h> -#include <linux/seq_file.h> -#include <linux/bitops.h> #include <linux/regmap.h> -#include <linux/mfd/intel_soc_pmic.h> +#include <linux/seq_file.h> #define CRYSTALCOVE_GPIO_NUM 16 #define CRYSTALCOVE_VGPIO_NUM 95 @@ -279,8 +271,8 @@ static struct irq_chip crystalcove_irqchip = { static irqreturn_t crystalcove_gpio_irq_handler(int irq, void *data) { struct crystalcove_gpio *cg = data; + unsigned long pending; unsigned int p0, p1; - int pending; int gpio; unsigned int virq; @@ -293,11 +285,9 @@ static irqreturn_t crystalcove_gpio_irq_handler(int irq, void *data) pending = p0 | p1 << 8; - for (gpio = 0; gpio < CRYSTALCOVE_GPIO_NUM; gpio++) { - if (pending & BIT(gpio)) { - virq = irq_find_mapping(cg->chip.irq.domain, gpio); - handle_nested_irq(virq); - } + for_each_set_bit(gpio, &pending, CRYSTALCOVE_GPIO_NUM) { + virq = irq_find_mapping(cg->chip.irq.domain, gpio); + handle_nested_irq(virq); } return IRQ_HANDLED; diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c index bdb29e51b417..188b8e5c8e67 100644 --- a/drivers/gpio/gpio-davinci.c +++ b/drivers/gpio/gpio-davinci.c @@ -198,7 +198,6 @@ static int davinci_gpio_probe(struct platform_device *pdev) struct davinci_gpio_controller *chips; struct davinci_gpio_platform_data *pdata; struct device *dev = &pdev->dev; - struct resource *res; pdata = davinci_gpio_get_pdata(pdev); if (!pdata) { @@ -236,8 +235,7 @@ static int davinci_gpio_probe(struct platform_device *pdev) if (!chips) return -ENOMEM; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - gpio_base = devm_ioremap_resource(dev, res); + gpio_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(gpio_base)) return PTR_ERR(gpio_base); diff --git a/drivers/gpio/gpio-eic-sprd.c b/drivers/gpio/gpio-eic-sprd.c index e41223c05f6e..f0223cee9774 100644 --- a/drivers/gpio/gpio-eic-sprd.c +++ b/drivers/gpio/gpio-eic-sprd.c @@ -432,6 +432,7 @@ static int sprd_eic_irq_set_type(struct irq_data *data, unsigned int flow_type) default: return -ENOTSUPP; } + break; default: dev_err(chip->parent, "Unsupported EIC type.\n"); return -ENOTSUPP; diff --git a/drivers/gpio/gpio-f7188x.c b/drivers/gpio/gpio-f7188x.c index 13350c9d7f5e..0896c825b312 100644 --- a/drivers/gpio/gpio-f7188x.c +++ b/drivers/gpio/gpio-f7188x.c @@ -39,8 +39,10 @@ #define SIO_F71889_ID 0x0909 /* F71889 chipset ID */ #define SIO_F71889A_ID 0x1005 /* F71889A chipset ID */ #define SIO_F81866_ID 0x1010 /* F81866 chipset ID */ +#define SIO_F81804_ID 0x1502 /* F81804 chipset ID, same for f81966 */ -enum chips { f71869, f71869a, f71882fg, f71889a, f71889f, f81866 }; + +enum chips { f71869, f71869a, f71882fg, f71889a, f71889f, f81866, f81804 }; static const char * const f7188x_names[] = { "f71869", @@ -49,6 +51,7 @@ static const char * const f7188x_names[] = { "f71889a", "f71889f", "f81866", + "f81804", }; struct f7188x_sio { @@ -223,6 +226,18 @@ static struct f7188x_gpio_bank f81866_gpio_bank[] = { F7188X_GPIO_BANK(80, 8, 0x88), }; + +static struct f7188x_gpio_bank f81804_gpio_bank[] = { + F7188X_GPIO_BANK(0, 8, 0xF0), + F7188X_GPIO_BANK(10, 8, 0xE0), + F7188X_GPIO_BANK(20, 8, 0xD0), + F7188X_GPIO_BANK(50, 8, 0xA0), + F7188X_GPIO_BANK(60, 8, 0x90), + F7188X_GPIO_BANK(70, 8, 0x80), + F7188X_GPIO_BANK(90, 8, 0x98), +}; + + static int f7188x_gpio_get_direction(struct gpio_chip *chip, unsigned offset) { int err; @@ -407,6 +422,10 @@ static int f7188x_gpio_probe(struct platform_device *pdev) data->nr_bank = ARRAY_SIZE(f81866_gpio_bank); data->bank = f81866_gpio_bank; break; + case f81804: + data->nr_bank = ARRAY_SIZE(f81804_gpio_bank); + data->bank = f81804_gpio_bank; + break; default: return -ENODEV; } @@ -469,6 +488,9 @@ static int __init f7188x_find(int addr, struct f7188x_sio *sio) case SIO_F81866_ID: sio->type = f81866; break; + case SIO_F81804_ID: + sio->type = f81804; + break; default: pr_info(DRVNAME ": Unsupported Fintek device 0x%04x\n", devid); goto err; diff --git a/drivers/gpio/gpio-ftgpio010.c b/drivers/gpio/gpio-ftgpio010.c index 95f578804b0e..45fe125823a8 100644 --- a/drivers/gpio/gpio-ftgpio010.c +++ b/drivers/gpio/gpio-ftgpio010.c @@ -41,12 +41,14 @@ * struct ftgpio_gpio - Gemini GPIO state container * @dev: containing device for this instance * @gc: gpiochip for this instance + * @irq: irqchip for this instance * @base: remapped I/O-memory base * @clk: silicon clock */ struct ftgpio_gpio { struct device *dev; struct gpio_chip gc; + struct irq_chip irq; void __iomem *base; struct clk *clk; }; @@ -134,14 +136,6 @@ static int ftgpio_gpio_set_irq_type(struct irq_data *d, unsigned int type) return 0; } -static struct irq_chip ftgpio_gpio_irqchip = { - .name = "FTGPIO010", - .irq_ack = ftgpio_gpio_ack_irq, - .irq_mask = ftgpio_gpio_mask_irq, - .irq_unmask = ftgpio_gpio_unmask_irq, - .irq_set_type = ftgpio_gpio_set_irq_type, -}; - static void ftgpio_gpio_irq_handler(struct irq_desc *desc) { struct gpio_chip *gc = irq_desc_get_handler_data(desc); @@ -297,14 +291,20 @@ static int ftgpio_gpio_probe(struct platform_device *pdev) /* Clear any use of debounce */ writel(0x0, g->base + GPIO_DEBOUNCE_EN); - ret = gpiochip_irqchip_add(&g->gc, &ftgpio_gpio_irqchip, + g->irq.name = "FTGPIO010"; + g->irq.irq_ack = ftgpio_gpio_ack_irq; + g->irq.irq_mask = ftgpio_gpio_mask_irq; + g->irq.irq_unmask = ftgpio_gpio_unmask_irq; + g->irq.irq_set_type = ftgpio_gpio_set_irq_type; + + ret = gpiochip_irqchip_add(&g->gc, &g->irq, 0, handle_bad_irq, IRQ_TYPE_NONE); if (ret) { dev_info(dev, "could not add irqchip\n"); goto dis_clk; } - gpiochip_set_chained_irqchip(&g->gc, &ftgpio_gpio_irqchip, + gpiochip_set_chained_irqchip(&g->gc, &g->irq, irq, ftgpio_gpio_irq_handler); platform_set_drvdata(pdev, g); diff --git a/drivers/gpio/gpio-gw-pld.c b/drivers/gpio/gpio-gw-pld.c new file mode 100644 index 000000000000..242112ff60ee --- /dev/null +++ b/drivers/gpio/gpio-gw-pld.c @@ -0,0 +1,137 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Gateworks I2C PLD GPIO expander +// +// Copyright (C) 2019 Linus Walleij <linus.walleij@linaro.org> +// +// Based on code and know-how from the OpenWrt driver: +// Copyright (C) 2009 Gateworks Corporation +// Authors: Chris Lang, Imre Kaloz + +#include <linux/bits.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/gpio/driver.h> +#include <linux/i2c.h> +#include <linux/module.h> + +/** + * struct gw_pld - State container for Gateworks PLD + * @chip: GPIO chip instance + * @client: I2C client + * @out: shadow register for the output bute + */ +struct gw_pld { + struct gpio_chip chip; + struct i2c_client *client; + u8 out; +}; + +/* + * The Gateworks I2C PLD chip only expose one read and one write register. + * Writing a "one" bit (to match the reset state) lets that pin be used as an + * input. It is an open-drain model. + */ +static int gw_pld_input8(struct gpio_chip *gc, unsigned offset) +{ + struct gw_pld *gw = gpiochip_get_data(gc); + + gw->out |= BIT(offset); + return i2c_smbus_write_byte(gw->client, gw->out); +} + +static int gw_pld_get8(struct gpio_chip *gc, unsigned offset) +{ + struct gw_pld *gw = gpiochip_get_data(gc); + s32 val; + + val = i2c_smbus_read_byte(gw->client); + + return (val < 0) ? 0 : !!(val & BIT(offset)); +} + +static int gw_pld_output8(struct gpio_chip *gc, unsigned offset, int value) +{ + struct gw_pld *gw = gpiochip_get_data(gc); + + if (value) + gw->out |= BIT(offset); + else + gw->out &= ~BIT(offset); + + return i2c_smbus_write_byte(gw->client, gw->out); +} + +static void gw_pld_set8(struct gpio_chip *gc, unsigned offset, int value) +{ + gw_pld_output8(gc, offset, value); +} + +static int gw_pld_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct device_node *np = dev->of_node; + struct gw_pld *gw; + int ret; + + gw = devm_kzalloc(dev, sizeof(*gw), GFP_KERNEL); + if (!gw) + return -ENOMEM; + + gw->chip.base = -1; + gw->chip.can_sleep = true; + gw->chip.parent = dev; + gw->chip.of_node = np; + gw->chip.owner = THIS_MODULE; + gw->chip.label = dev_name(dev); + gw->chip.ngpio = 8; + gw->chip.direction_input = gw_pld_input8; + gw->chip.get = gw_pld_get8; + gw->chip.direction_output = gw_pld_output8; + gw->chip.set = gw_pld_set8; + gw->client = client; + + /* + * The Gateworks I2C PLD chip does not properly send the acknowledge + * bit at all times, but we can still use the standard i2c_smbus + * functions by simply ignoring this bit. + */ + client->flags |= I2C_M_IGNORE_NAK; + gw->out = 0xFF; + + i2c_set_clientdata(client, gw); + + ret = devm_gpiochip_add_data(dev, &gw->chip, gw); + if (ret) + return ret; + + dev_info(dev, "registered Gateworks PLD GPIO device\n"); + + return 0; +} + +static const struct i2c_device_id gw_pld_id[] = { + { "gw-pld", }, + { } +}; +MODULE_DEVICE_TABLE(i2c, gw_pld_id); + +static const struct of_device_id gw_pld_dt_ids[] = { + { .compatible = "gateworks,pld-gpio", }, + { }, +}; +MODULE_DEVICE_TABLE(of, gw_pld_dt_ids); + +static struct i2c_driver gw_pld_driver = { + .driver = { + .name = "gw_pld", + .of_match_table = gw_pld_dt_ids, + }, + .probe = gw_pld_probe, + .id_table = gw_pld_id, +}; +module_i2c_driver(gw_pld_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>"); diff --git a/drivers/gpio/gpio-hlwd.c b/drivers/gpio/gpio-hlwd.c index a63136a68ba3..a7b17897356e 100644 --- a/drivers/gpio/gpio-hlwd.c +++ b/drivers/gpio/gpio-hlwd.c @@ -48,9 +48,163 @@ struct hlwd_gpio { struct gpio_chip gpioc; + struct irq_chip irqc; void __iomem *regs; + int irq; + u32 edge_emulation; + u32 rising_edge, falling_edge; }; +static void hlwd_gpio_irqhandler(struct irq_desc *desc) +{ + struct hlwd_gpio *hlwd = + gpiochip_get_data(irq_desc_get_handler_data(desc)); + struct irq_chip *chip = irq_desc_get_chip(desc); + unsigned long flags; + unsigned long pending; + int hwirq; + u32 emulated_pending; + + spin_lock_irqsave(&hlwd->gpioc.bgpio_lock, flags); + pending = ioread32be(hlwd->regs + HW_GPIOB_INTFLAG); + pending &= ioread32be(hlwd->regs + HW_GPIOB_INTMASK); + + /* Treat interrupts due to edge trigger emulation separately */ + emulated_pending = hlwd->edge_emulation & pending; + pending &= ~emulated_pending; + if (emulated_pending) { + u32 level, rising, falling; + + level = ioread32be(hlwd->regs + HW_GPIOB_INTLVL); + rising = level & emulated_pending; + falling = ~level & emulated_pending; + + /* Invert the levels */ + iowrite32be(level ^ emulated_pending, + hlwd->regs + HW_GPIOB_INTLVL); + + /* Ack all emulated-edge interrupts */ + iowrite32be(emulated_pending, hlwd->regs + HW_GPIOB_INTFLAG); + + /* Signal interrupts only on the correct edge */ + rising &= hlwd->rising_edge; + falling &= hlwd->falling_edge; + + /* Mark emulated interrupts as pending */ + pending |= rising | falling; + } + spin_unlock_irqrestore(&hlwd->gpioc.bgpio_lock, flags); + + chained_irq_enter(chip, desc); + + for_each_set_bit(hwirq, &pending, 32) { + int irq = irq_find_mapping(hlwd->gpioc.irq.domain, hwirq); + + generic_handle_irq(irq); + } + + chained_irq_exit(chip, desc); +} + +static void hlwd_gpio_irq_ack(struct irq_data *data) +{ + struct hlwd_gpio *hlwd = + gpiochip_get_data(irq_data_get_irq_chip_data(data)); + + iowrite32be(BIT(data->hwirq), hlwd->regs + HW_GPIOB_INTFLAG); +} + +static void hlwd_gpio_irq_mask(struct irq_data *data) +{ + struct hlwd_gpio *hlwd = + gpiochip_get_data(irq_data_get_irq_chip_data(data)); + unsigned long flags; + u32 mask; + + spin_lock_irqsave(&hlwd->gpioc.bgpio_lock, flags); + mask = ioread32be(hlwd->regs + HW_GPIOB_INTMASK); + mask &= ~BIT(data->hwirq); + iowrite32be(mask, hlwd->regs + HW_GPIOB_INTMASK); + spin_unlock_irqrestore(&hlwd->gpioc.bgpio_lock, flags); +} + +static void hlwd_gpio_irq_unmask(struct irq_data *data) +{ + struct hlwd_gpio *hlwd = + gpiochip_get_data(irq_data_get_irq_chip_data(data)); + unsigned long flags; + u32 mask; + + spin_lock_irqsave(&hlwd->gpioc.bgpio_lock, flags); + mask = ioread32be(hlwd->regs + HW_GPIOB_INTMASK); + mask |= BIT(data->hwirq); + iowrite32be(mask, hlwd->regs + HW_GPIOB_INTMASK); + spin_unlock_irqrestore(&hlwd->gpioc.bgpio_lock, flags); +} + +static void hlwd_gpio_irq_enable(struct irq_data *data) +{ + hlwd_gpio_irq_ack(data); + hlwd_gpio_irq_unmask(data); +} + +static void hlwd_gpio_irq_setup_emulation(struct hlwd_gpio *hlwd, int hwirq, + unsigned int flow_type) +{ + u32 level, state; + + /* Set the trigger level to the inactive level */ + level = ioread32be(hlwd->regs + HW_GPIOB_INTLVL); + state = ioread32be(hlwd->regs + HW_GPIOB_IN) & BIT(hwirq); + level &= ~BIT(hwirq); + level |= state ^ BIT(hwirq); + iowrite32be(level, hlwd->regs + HW_GPIOB_INTLVL); + + hlwd->edge_emulation |= BIT(hwirq); + hlwd->rising_edge &= ~BIT(hwirq); + hlwd->falling_edge &= ~BIT(hwirq); + if (flow_type & IRQ_TYPE_EDGE_RISING) + hlwd->rising_edge |= BIT(hwirq); + if (flow_type & IRQ_TYPE_EDGE_FALLING) + hlwd->falling_edge |= BIT(hwirq); +} + +static int hlwd_gpio_irq_set_type(struct irq_data *data, unsigned int flow_type) +{ + struct hlwd_gpio *hlwd = + gpiochip_get_data(irq_data_get_irq_chip_data(data)); + unsigned long flags; + u32 level; + + spin_lock_irqsave(&hlwd->gpioc.bgpio_lock, flags); + + hlwd->edge_emulation &= ~BIT(data->hwirq); + + switch (flow_type) { + case IRQ_TYPE_LEVEL_HIGH: + level = ioread32be(hlwd->regs + HW_GPIOB_INTLVL); + level |= BIT(data->hwirq); + iowrite32be(level, hlwd->regs + HW_GPIOB_INTLVL); + break; + case IRQ_TYPE_LEVEL_LOW: + level = ioread32be(hlwd->regs + HW_GPIOB_INTLVL); + level &= ~BIT(data->hwirq); + iowrite32be(level, hlwd->regs + HW_GPIOB_INTLVL); + break; + case IRQ_TYPE_EDGE_RISING: + case IRQ_TYPE_EDGE_FALLING: + case IRQ_TYPE_EDGE_BOTH: + hlwd_gpio_irq_setup_emulation(hlwd, data->hwirq, flow_type); + break; + default: + spin_unlock_irqrestore(&hlwd->gpioc.bgpio_lock, flags); + return -EINVAL; + } + + spin_unlock_irqrestore(&hlwd->gpioc.bgpio_lock, flags); + return 0; +} + static int hlwd_gpio_probe(struct platform_device *pdev) { struct hlwd_gpio *hlwd; @@ -92,7 +246,43 @@ static int hlwd_gpio_probe(struct platform_device *pdev) ngpios = 32; hlwd->gpioc.ngpio = ngpios; - return devm_gpiochip_add_data(&pdev->dev, &hlwd->gpioc, hlwd); + res = devm_gpiochip_add_data(&pdev->dev, &hlwd->gpioc, hlwd); + if (res) + return res; + + /* Mask and ack all interrupts */ + iowrite32be(0, hlwd->regs + HW_GPIOB_INTMASK); + iowrite32be(0xffffffff, hlwd->regs + HW_GPIOB_INTFLAG); + + /* + * If this GPIO controller is not marked as an interrupt controller in + * the DT, return. + */ + if (!of_property_read_bool(pdev->dev.of_node, "interrupt-controller")) + return 0; + + hlwd->irq = platform_get_irq(pdev, 0); + if (hlwd->irq < 0) { + dev_info(&pdev->dev, "platform_get_irq returned %d\n", + hlwd->irq); + return hlwd->irq; + } + + hlwd->irqc.name = dev_name(&pdev->dev); + hlwd->irqc.irq_mask = hlwd_gpio_irq_mask; + hlwd->irqc.irq_unmask = hlwd_gpio_irq_unmask; + hlwd->irqc.irq_enable = hlwd_gpio_irq_enable; + hlwd->irqc.irq_set_type = hlwd_gpio_irq_set_type; + + res = gpiochip_irqchip_add(&hlwd->gpioc, &hlwd->irqc, 0, + handle_level_irq, IRQ_TYPE_NONE); + if (res) + return res; + + gpiochip_set_chained_irqchip(&hlwd->gpioc, &hlwd->irqc, + hlwd->irq, hlwd_gpio_irqhandler); + + return 0; } static const struct of_device_id hlwd_gpio_match[] = { diff --git a/drivers/gpio/gpio-madera.c b/drivers/gpio/gpio-madera.c index 7ba68d1a0932..c9dad0543672 100644 --- a/drivers/gpio/gpio-madera.c +++ b/drivers/gpio/gpio-madera.c @@ -107,7 +107,7 @@ static void madera_gpio_set(struct gpio_chip *chip, unsigned int offset, MADERA_GPIO1_CTRL_1 + reg_offset, ret); } -static struct gpio_chip madera_gpio_chip = { +static const struct gpio_chip madera_gpio_chip = { .label = "madera", .owner = THIS_MODULE, .request = gpiochip_generic_request, diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c index 6a50f9f59c90..154d959e8993 100644 --- a/drivers/gpio/gpio-mockup.c +++ b/drivers/gpio/gpio-mockup.c @@ -47,6 +47,7 @@ enum { struct gpio_mockup_line_status { int dir; int value; + int pull; }; struct gpio_mockup_chip { @@ -54,12 +55,13 @@ struct gpio_mockup_chip { struct gpio_mockup_line_status *lines; struct irq_sim irqsim; struct dentry *dbg_dir; + struct mutex lock; }; struct gpio_mockup_dbgfs_private { struct gpio_mockup_chip *chip; struct gpio_desc *desc; - int offset; + unsigned int offset; }; static int gpio_mockup_ranges[GPIO_MOCKUP_MAX_RANGES]; @@ -82,29 +84,66 @@ static int gpio_mockup_range_ngpio(unsigned int index) return gpio_mockup_ranges[index * 2 + 1]; } +static int __gpio_mockup_get(struct gpio_mockup_chip *chip, + unsigned int offset) +{ + return chip->lines[offset].value; +} + static int gpio_mockup_get(struct gpio_chip *gc, unsigned int offset) { struct gpio_mockup_chip *chip = gpiochip_get_data(gc); + int val; - return chip->lines[offset].value; + mutex_lock(&chip->lock); + val = __gpio_mockup_get(chip, offset); + mutex_unlock(&chip->lock); + + return val; } -static void gpio_mockup_set(struct gpio_chip *gc, - unsigned int offset, int value) +static int gpio_mockup_get_multiple(struct gpio_chip *gc, + unsigned long *mask, unsigned long *bits) { struct gpio_mockup_chip *chip = gpiochip_get_data(gc); + unsigned int bit, val; + + mutex_lock(&chip->lock); + for_each_set_bit(bit, mask, gc->ngpio) { + val = __gpio_mockup_get(chip, bit); + __assign_bit(bit, bits, val); + } + mutex_unlock(&chip->lock); + + return 0; +} +static void __gpio_mockup_set(struct gpio_mockup_chip *chip, + unsigned int offset, int value) +{ chip->lines[offset].value = !!value; } +static void gpio_mockup_set(struct gpio_chip *gc, + unsigned int offset, int value) +{ + struct gpio_mockup_chip *chip = gpiochip_get_data(gc); + + mutex_lock(&chip->lock); + __gpio_mockup_set(chip, offset, value); + mutex_unlock(&chip->lock); +} + static void gpio_mockup_set_multiple(struct gpio_chip *gc, unsigned long *mask, unsigned long *bits) { + struct gpio_mockup_chip *chip = gpiochip_get_data(gc); unsigned int bit; + mutex_lock(&chip->lock); for_each_set_bit(bit, mask, gc->ngpio) - gpio_mockup_set(gc, bit, test_bit(bit, bits)); - + __gpio_mockup_set(chip, bit, test_bit(bit, bits)); + mutex_unlock(&chip->lock); } static int gpio_mockup_dirout(struct gpio_chip *gc, @@ -112,8 +151,10 @@ static int gpio_mockup_dirout(struct gpio_chip *gc, { struct gpio_mockup_chip *chip = gpiochip_get_data(gc); - gpio_mockup_set(gc, offset, value); + mutex_lock(&chip->lock); chip->lines[offset].dir = GPIO_MOCKUP_DIR_OUT; + __gpio_mockup_set(chip, offset, value); + mutex_unlock(&chip->lock); return 0; } @@ -122,7 +163,9 @@ static int gpio_mockup_dirin(struct gpio_chip *gc, unsigned int offset) { struct gpio_mockup_chip *chip = gpiochip_get_data(gc); + mutex_lock(&chip->lock); chip->lines[offset].dir = GPIO_MOCKUP_DIR_IN; + mutex_unlock(&chip->lock); return 0; } @@ -130,8 +173,13 @@ static int gpio_mockup_dirin(struct gpio_chip *gc, unsigned int offset) static int gpio_mockup_get_direction(struct gpio_chip *gc, unsigned int offset) { struct gpio_mockup_chip *chip = gpiochip_get_data(gc); + int direction; - return !chip->lines[offset].dir; + mutex_lock(&chip->lock); + direction = !chip->lines[offset].dir; + mutex_unlock(&chip->lock); + + return direction; } static int gpio_mockup_to_irq(struct gpio_chip *gc, unsigned int offset) @@ -141,15 +189,56 @@ static int gpio_mockup_to_irq(struct gpio_chip *gc, unsigned int offset) return irq_sim_irqnum(&chip->irqsim, offset); } -static ssize_t gpio_mockup_event_write(struct file *file, - const char __user *usr_buf, - size_t size, loff_t *ppos) +static void gpio_mockup_free(struct gpio_chip *gc, unsigned int offset) +{ + struct gpio_mockup_chip *chip = gpiochip_get_data(gc); + + __gpio_mockup_set(chip, offset, chip->lines[offset].pull); +} + +static ssize_t gpio_mockup_debugfs_read(struct file *file, + char __user *usr_buf, + size_t size, loff_t *ppos) { struct gpio_mockup_dbgfs_private *priv; struct gpio_mockup_chip *chip; struct seq_file *sfile; + struct gpio_chip *gc; + char buf[3]; + int val, rv; + + if (*ppos != 0) + return 0; + + sfile = file->private_data; + priv = sfile->private; + chip = priv->chip; + gc = &chip->gc; + + val = gpio_mockup_get(gc, priv->offset); + snprintf(buf, sizeof(buf), "%d\n", val); + + rv = copy_to_user(usr_buf, buf, sizeof(buf)); + if (rv) + return rv; + + return sizeof(buf) - 1; +} + +static ssize_t gpio_mockup_debugfs_write(struct file *file, + const char __user *usr_buf, + size_t size, loff_t *ppos) +{ + struct gpio_mockup_dbgfs_private *priv; + int rv, val, curr, irq, irq_type; + struct gpio_mockup_chip *chip; + struct seq_file *sfile; struct gpio_desc *desc; - int rv, val; + struct gpio_chip *gc; + struct irq_sim *sim; + + if (*ppos != 0) + return -EINVAL; rv = kstrtoint_from_user(usr_buf, size, 0, &val); if (rv) @@ -159,24 +248,70 @@ static ssize_t gpio_mockup_event_write(struct file *file, sfile = file->private_data; priv = sfile->private; - desc = priv->desc; chip = priv->chip; + gc = &chip->gc; + desc = &gc->gpiodev->descs[priv->offset]; + sim = &chip->irqsim; + + mutex_lock(&chip->lock); + + if (test_bit(FLAG_REQUESTED, &desc->flags) && + !test_bit(FLAG_IS_OUT, &desc->flags)) { + curr = __gpio_mockup_get(chip, priv->offset); + if (curr == val) + goto out; + + irq = irq_sim_irqnum(sim, priv->offset); + irq_type = irq_get_trigger_type(irq); + + if ((val == 1 && (irq_type & IRQ_TYPE_EDGE_RISING)) || + (val == 0 && (irq_type & IRQ_TYPE_EDGE_FALLING))) + irq_sim_fire(sim, priv->offset); + } + + /* Change the value unless we're actively driving the line. */ + if (!test_bit(FLAG_REQUESTED, &desc->flags) || + !test_bit(FLAG_IS_OUT, &desc->flags)) + __gpio_mockup_set(chip, priv->offset, val); - gpiod_set_value_cansleep(desc, val); - irq_sim_fire(&chip->irqsim, priv->offset); +out: + chip->lines[priv->offset].pull = val; + mutex_unlock(&chip->lock); return size; } -static int gpio_mockup_event_open(struct inode *inode, struct file *file) +static int gpio_mockup_debugfs_open(struct inode *inode, struct file *file) { return single_open(file, NULL, inode->i_private); } -static const struct file_operations gpio_mockup_event_ops = { +/* + * Each mockup chip is represented by a directory named after the chip's device + * name under /sys/kernel/debug/gpio-mockup/. Each line is represented by + * a file using the line's offset as the name under the chip's directory. + * + * Reading from the line's file yields the current *value*, writing to the + * line's file changes the current *pull*. Default pull for mockup lines is + * down. + * + * Examples: + * - when a line pulled down is requested in output mode and driven high, its + * value will return to 0 once it's released + * - when the line is requested in output mode and driven high, writing 0 to + * the corresponding debugfs file will change the pull to down but the + * reported value will still be 1 until the line is released + * - line requested in input mode always reports the same value as its pull + * configuration + * - when the line is requested in input mode and monitored for events, writing + * the same value to the debugfs file will be a noop, while writing the + * opposite value will generate a dummy interrupt with an appropriate edge + */ +static const struct file_operations gpio_mockup_debugfs_ops = { .owner = THIS_MODULE, - .open = gpio_mockup_event_open, - .write = gpio_mockup_event_write, + .open = gpio_mockup_debugfs_open, + .read = gpio_mockup_debugfs_read, + .write = gpio_mockup_debugfs_write, .llseek = no_llseek, }; @@ -184,7 +319,7 @@ static void gpio_mockup_debugfs_setup(struct device *dev, struct gpio_mockup_chip *chip) { struct gpio_mockup_dbgfs_private *priv; - struct dentry *evfile, *link; + struct dentry *evfile; struct gpio_chip *gc; const char *devname; char *name; @@ -197,10 +332,6 @@ static void gpio_mockup_debugfs_setup(struct device *dev, if (IS_ERR_OR_NULL(chip->dbg_dir)) goto err; - link = debugfs_create_symlink(gc->label, gpio_mockup_dbg_dir, devname); - if (IS_ERR_OR_NULL(link)) - goto err; - for (i = 0; i < gc->ngpio; i++) { name = devm_kasprintf(dev, GFP_KERNEL, "%d", i); if (!name) @@ -215,7 +346,7 @@ static void gpio_mockup_debugfs_setup(struct device *dev, priv->desc = &gc->gpiodev->descs[i]; evfile = debugfs_create_file(name, 0200, chip->dbg_dir, priv, - &gpio_mockup_event_ops); + &gpio_mockup_debugfs_ops); if (IS_ERR_OR_NULL(evfile)) goto err; } @@ -223,7 +354,7 @@ static void gpio_mockup_debugfs_setup(struct device *dev, return; err: - dev_err(dev, "error creating debugfs event files\n"); + dev_err(dev, "error creating debugfs files\n"); } static int gpio_mockup_name_lines(struct device *dev, @@ -283,6 +414,8 @@ static int gpio_mockup_probe(struct platform_device *pdev) return -ENOMEM; } + mutex_init(&chip->lock); + gc = &chip->gc; gc->base = base; gc->ngpio = ngpio; @@ -291,11 +424,13 @@ static int gpio_mockup_probe(struct platform_device *pdev) gc->parent = dev; gc->get = gpio_mockup_get; gc->set = gpio_mockup_set; + gc->get_multiple = gpio_mockup_get_multiple; gc->set_multiple = gpio_mockup_set_multiple; gc->direction_output = gpio_mockup_dirout; gc->direction_input = gpio_mockup_dirin; gc->get_direction = gpio_mockup_get_direction; gc->to_irq = gpio_mockup_to_irq; + gc->free = gpio_mockup_free; chip->lines = devm_kcalloc(dev, gc->ngpio, sizeof(*chip->lines), GFP_KERNEL); @@ -369,7 +504,7 @@ static int __init gpio_mockup_init(void) return -EINVAL; } - gpio_mockup_dbg_dir = debugfs_create_dir("gpio-mockup-event", NULL); + gpio_mockup_dbg_dir = debugfs_create_dir("gpio-mockup", NULL); if (IS_ERR_OR_NULL(gpio_mockup_dbg_dir)) gpio_mockup_err("error creating debugfs directory\n"); diff --git a/drivers/gpio/gpio-msic.c b/drivers/gpio/gpio-msic.c index 3b34dbecef99..7e3c96e4ab2c 100644 --- a/drivers/gpio/gpio-msic.c +++ b/drivers/gpio/gpio-msic.c @@ -1,32 +1,19 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel Medfield MSIC GPIO driver> * Copyright (c) 2011, Intel Corporation. * * Author: Mathias Nyman <mathias.nyman@linux.intel.com> * Based on intel_pmic_gpio.c - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * */ -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/init.h> #include <linux/gpio/driver.h> -#include <linux/platform_device.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> #include <linux/mfd/intel_msic.h> +#include <linux/platform_device.h> +#include <linux/slab.h> /* the offset for the mapping of global gpio pin to irq */ #define MSIC_GPIO_IRQ_OFFSET 0x100 @@ -237,20 +224,17 @@ static void msic_gpio_irq_handler(struct irq_desc *desc) struct msic_gpio *mg = irq_data_get_irq_handler_data(data); struct irq_chip *chip = irq_data_get_irq_chip(data); struct intel_msic *msic = pdev_to_intel_msic(mg->pdev); + unsigned long pending; int i; int bitnr; u8 pin; - unsigned long pending = 0; for (i = 0; i < (mg->chip.ngpio / BITS_PER_BYTE); i++) { intel_msic_irq_read(msic, INTEL_MSIC_GPIO0LVIRQ + i, &pin); pending = pin; - if (pending) { - for_each_set_bit(bitnr, &pending, BITS_PER_BYTE) - generic_handle_irq(mg->irq_base + - (i * BITS_PER_BYTE) + bitnr); - } + for_each_set_bit(bitnr, &pending, BITS_PER_BYTE) + generic_handle_irq(mg->irq_base + i * BITS_PER_BYTE + bitnr); } chip->irq_eoi(data); } diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c index 7d5c55494ccd..f97ed32b8beb 100644 --- a/drivers/gpio/gpio-mvebu.c +++ b/drivers/gpio/gpio-mvebu.c @@ -376,6 +376,16 @@ static int mvebu_gpio_direction_output(struct gpio_chip *chip, unsigned int pin, return 0; } +static int mvebu_gpio_get_direction(struct gpio_chip *chip, unsigned int pin) +{ + struct mvebu_gpio_chip *mvchip = gpiochip_get_data(chip); + u32 u; + + regmap_read(mvchip->regs, GPIO_IO_CONF_OFF + mvchip->offset, &u); + + return !!(u & BIT(pin)); +} + static int mvebu_gpio_to_irq(struct gpio_chip *chip, unsigned int pin) { struct mvebu_gpio_chip *mvchip = gpiochip_get_data(chip); @@ -1130,6 +1140,7 @@ static int mvebu_gpio_probe(struct platform_device *pdev) mvchip->chip.parent = &pdev->dev; mvchip->chip.request = gpiochip_generic_request; mvchip->chip.free = gpiochip_generic_free; + mvchip->chip.get_direction = mvebu_gpio_get_direction; mvchip->chip.direction_input = mvebu_gpio_direction_input; mvchip->chip.get = mvebu_gpio_get; mvchip->chip.direction_output = mvebu_gpio_direction_output; diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c index 2d1dfa1e0745..e86e61dda4b7 100644 --- a/drivers/gpio/gpio-mxc.c +++ b/drivers/gpio/gpio-mxc.c @@ -438,8 +438,11 @@ static int mxc_gpio_probe(struct platform_device *pdev) /* the controller clock is optional */ port->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(port->clk)) + if (IS_ERR(port->clk)) { + if (PTR_ERR(port->clk) == -EPROBE_DEFER) + return -EPROBE_DEFER; port->clk = NULL; + } err = clk_prepare_enable(port->clk); if (err) { diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index f4e9921fa966..7f33024b6d83 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -883,14 +883,16 @@ static void omap_gpio_unmask_irq(struct irq_data *d) if (trigger) omap_set_gpio_triggering(bank, offset, trigger); - /* For level-triggered GPIOs, the clearing must be done after - * the HW source is cleared, thus after the handler has run */ - if (bank->level_mask & BIT(offset)) { - omap_set_gpio_irqenable(bank, offset, 0); + omap_set_gpio_irqenable(bank, offset, 1); + + /* + * For level-triggered GPIOs, clearing must be done after the source + * is cleared, thus after the handler has run. OMAP4 needs this done + * after enabing the interrupt to clear the wakeup status. + */ + if (bank->level_mask & BIT(offset)) omap_clear_gpio_irqstatus(bank, offset); - } - omap_set_gpio_irqenable(bank, offset, 1); raw_spin_unlock_irqrestore(&bank->lock, flags); } diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 0dc96419efe3..7e76830b3368 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -65,7 +65,7 @@ #define PCA_INT 0x0100 #define PCA_PCAL 0x0200 -#define PCA_LATCH_INT (PCA_PCAL | PCA_INT) +#define PCA_LATCH_INT (PCA_PCAL | PCA_INT) #define PCA953X_TYPE 0x1000 #define PCA957X_TYPE 0x2000 #define PCA_TYPE_MASK 0xF000 @@ -88,8 +88,9 @@ static const struct i2c_device_id pca953x_id[] = { { "pca9575", 16 | PCA957X_TYPE | PCA_INT, }, { "pca9698", 40 | PCA953X_TYPE, }, - { "pcal6524", 24 | PCA953X_TYPE | PCA_INT | PCA_PCAL, }, - { "pcal9555a", 16 | PCA953X_TYPE | PCA_INT | PCA_PCAL, }, + { "pcal6416", 16 | PCA953X_TYPE | PCA_LATCH_INT, }, + { "pcal6524", 24 | PCA953X_TYPE | PCA_LATCH_INT, }, + { "pcal9555a", 16 | PCA953X_TYPE | PCA_LATCH_INT, }, { "max7310", 8 | PCA953X_TYPE, }, { "max7312", 16 | PCA953X_TYPE | PCA_INT, }, @@ -108,7 +109,7 @@ static const struct i2c_device_id pca953x_id[] = { MODULE_DEVICE_TABLE(i2c, pca953x_id); static const struct acpi_device_id pca953x_acpi_ids[] = { - { "INT3491", 16 | PCA953X_TYPE | PCA_INT | PCA_PCAL, }, + { "INT3491", 16 | PCA953X_TYPE | PCA_LATCH_INT, }, { } }; MODULE_DEVICE_TABLE(acpi, pca953x_acpi_ids); @@ -150,6 +151,7 @@ struct pca953x_chip { u8 irq_stat[MAX_BANK]; u8 irq_trig_raise[MAX_BANK]; u8 irq_trig_fall[MAX_BANK]; + struct irq_chip irq_chip; #endif struct i2c_client *client; @@ -178,6 +180,8 @@ static int pca953x_bank_shift(struct pca953x_chip *chip) #define PCA957x_BANK_OUTPUT BIT(5) #define PCAL9xxx_BANK_IN_LATCH BIT(8 + 2) +#define PCAL9xxx_BANK_PULL_EN BIT(8 + 3) +#define PCAL9xxx_BANK_PULL_SEL BIT(8 + 4) #define PCAL9xxx_BANK_IRQ_MASK BIT(8 + 5) #define PCAL9xxx_BANK_IRQ_STAT BIT(8 + 6) @@ -199,6 +203,8 @@ static int pca953x_bank_shift(struct pca953x_chip *chip) * - Extended set, above 0x40, often chip specific. * - PCAL6524/PCAL9555A with custom PCAL IRQ handling: * Input latch register 0x40 + 2 * bank_size RW + * Pull-up/pull-down enable reg 0x40 + 3 * bank_size RW + * Pull-up/pull-down select reg 0x40 + 4 * bank_size RW * Interrupt mask register 0x40 + 5 * bank_size RW * Interrupt status register 0x40 + 6 * bank_size R * @@ -247,7 +253,8 @@ static bool pca953x_readable_register(struct device *dev, unsigned int reg) } if (chip->driver_data & PCA_PCAL) { - bank |= PCAL9xxx_BANK_IN_LATCH | PCAL9xxx_BANK_IRQ_MASK | + bank |= PCAL9xxx_BANK_IN_LATCH | PCAL9xxx_BANK_PULL_EN | + PCAL9xxx_BANK_PULL_SEL | PCAL9xxx_BANK_IRQ_MASK | PCAL9xxx_BANK_IRQ_STAT; } @@ -268,7 +275,8 @@ static bool pca953x_writeable_register(struct device *dev, unsigned int reg) } if (chip->driver_data & PCA_PCAL) - bank |= PCAL9xxx_BANK_IN_LATCH | PCAL9xxx_BANK_IRQ_MASK; + bank |= PCAL9xxx_BANK_IN_LATCH | PCAL9xxx_BANK_PULL_EN | + PCAL9xxx_BANK_PULL_SEL | PCAL9xxx_BANK_IRQ_MASK; return pca953x_check_register(chip, reg, bank); } @@ -473,6 +481,61 @@ exit: mutex_unlock(&chip->i2c_lock); } +static int pca953x_gpio_set_pull_up_down(struct pca953x_chip *chip, + unsigned int offset, + unsigned long config) +{ + u8 pull_en_reg = pca953x_recalc_addr(chip, PCAL953X_PULL_EN, offset, + true, false); + u8 pull_sel_reg = pca953x_recalc_addr(chip, PCAL953X_PULL_SEL, offset, + true, false); + u8 bit = BIT(offset % BANK_SZ); + int ret; + + /* + * pull-up/pull-down configuration requires PCAL extended + * registers + */ + if (!(chip->driver_data & PCA_PCAL)) + return -ENOTSUPP; + + mutex_lock(&chip->i2c_lock); + + /* Disable pull-up/pull-down */ + ret = regmap_write_bits(chip->regmap, pull_en_reg, bit, 0); + if (ret) + goto exit; + + /* Configure pull-up/pull-down */ + if (config == PIN_CONFIG_BIAS_PULL_UP) + ret = regmap_write_bits(chip->regmap, pull_sel_reg, bit, bit); + else if (config == PIN_CONFIG_BIAS_PULL_DOWN) + ret = regmap_write_bits(chip->regmap, pull_sel_reg, bit, 0); + if (ret) + goto exit; + + /* Enable pull-up/pull-down */ + ret = regmap_write_bits(chip->regmap, pull_en_reg, bit, bit); + +exit: + mutex_unlock(&chip->i2c_lock); + return ret; +} + +static int pca953x_gpio_set_config(struct gpio_chip *gc, unsigned int offset, + unsigned long config) +{ + struct pca953x_chip *chip = gpiochip_get_data(gc); + + switch (config) { + case PIN_CONFIG_BIAS_PULL_UP: + case PIN_CONFIG_BIAS_PULL_DOWN: + return pca953x_gpio_set_pull_up_down(chip, offset, config); + default: + return -ENOTSUPP; + } +} + static void pca953x_setup_gpio(struct pca953x_chip *chip, int gpios) { struct gpio_chip *gc; @@ -485,6 +548,7 @@ static void pca953x_setup_gpio(struct pca953x_chip *chip, int gpios) gc->set = pca953x_gpio_set_value; gc->get_direction = pca953x_gpio_get_direction; gc->set_multiple = pca953x_gpio_set_multiple; + gc->set_config = pca953x_gpio_set_config; gc->can_sleep = true; gc->base = chip->gpio_start; @@ -512,6 +576,14 @@ static void pca953x_irq_unmask(struct irq_data *d) chip->irq_mask[d->hwirq / BANK_SZ] |= 1 << (d->hwirq % BANK_SZ); } +static int pca953x_irq_set_wake(struct irq_data *d, unsigned int on) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct pca953x_chip *chip = gpiochip_get_data(gc); + + return irq_set_irq_wake(chip->client->irq, on); +} + static void pca953x_irq_bus_lock(struct irq_data *d) { struct gpio_chip *gc = irq_data_get_irq_chip_data(d); @@ -587,23 +659,14 @@ static int pca953x_irq_set_type(struct irq_data *d, unsigned int type) static void pca953x_irq_shutdown(struct irq_data *d) { - struct pca953x_chip *chip = irq_data_get_irq_chip_data(d); + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct pca953x_chip *chip = gpiochip_get_data(gc); u8 mask = 1 << (d->hwirq % BANK_SZ); chip->irq_trig_raise[d->hwirq / BANK_SZ] &= ~mask; chip->irq_trig_fall[d->hwirq / BANK_SZ] &= ~mask; } -static struct irq_chip pca953x_irq_chip = { - .name = "pca953x", - .irq_mask = pca953x_irq_mask, - .irq_unmask = pca953x_irq_unmask, - .irq_bus_lock = pca953x_irq_bus_lock, - .irq_bus_sync_unlock = pca953x_irq_bus_sync_unlock, - .irq_set_type = pca953x_irq_set_type, - .irq_shutdown = pca953x_irq_shutdown, -}; - static bool pca953x_irq_pending(struct pca953x_chip *chip, u8 *pending) { u8 cur_stat[MAX_BANK]; @@ -699,56 +762,65 @@ static int pca953x_irq_setup(struct pca953x_chip *chip, int irq_base) { struct i2c_client *client = chip->client; + struct irq_chip *irq_chip = &chip->irq_chip; int reg_direction[MAX_BANK]; int ret, i; - if (client->irq && irq_base != -1 - && (chip->driver_data & PCA_INT)) { - ret = pca953x_read_regs(chip, - chip->regs->input, chip->irq_stat); - if (ret) - return ret; + if (!client->irq) + return 0; - /* - * There is no way to know which GPIO line generated the - * interrupt. We have to rely on the previous read for - * this purpose. - */ - regmap_bulk_read(chip->regmap, chip->regs->direction, - reg_direction, NBANK(chip)); - for (i = 0; i < NBANK(chip); i++) - chip->irq_stat[i] &= reg_direction[i]; - mutex_init(&chip->irq_lock); - - ret = devm_request_threaded_irq(&client->dev, - client->irq, - NULL, - pca953x_irq_handler, - IRQF_TRIGGER_LOW | IRQF_ONESHOT | - IRQF_SHARED, - dev_name(&client->dev), chip); - if (ret) { - dev_err(&client->dev, "failed to request irq %d\n", - client->irq); - return ret; - } + if (irq_base == -1) + return 0; - ret = gpiochip_irqchip_add_nested(&chip->gpio_chip, - &pca953x_irq_chip, - irq_base, - handle_simple_irq, - IRQ_TYPE_NONE); - if (ret) { - dev_err(&client->dev, - "could not connect irqchip to gpiochip\n"); - return ret; - } + if (!(chip->driver_data & PCA_INT)) + return 0; - gpiochip_set_nested_irqchip(&chip->gpio_chip, - &pca953x_irq_chip, - client->irq); + ret = pca953x_read_regs(chip, chip->regs->input, chip->irq_stat); + if (ret) + return ret; + + /* + * There is no way to know which GPIO line generated the + * interrupt. We have to rely on the previous read for + * this purpose. + */ + regmap_bulk_read(chip->regmap, chip->regs->direction, reg_direction, + NBANK(chip)); + for (i = 0; i < NBANK(chip); i++) + chip->irq_stat[i] &= reg_direction[i]; + mutex_init(&chip->irq_lock); + + ret = devm_request_threaded_irq(&client->dev, client->irq, + NULL, pca953x_irq_handler, + IRQF_TRIGGER_LOW | IRQF_ONESHOT | + IRQF_SHARED, + dev_name(&client->dev), chip); + if (ret) { + dev_err(&client->dev, "failed to request irq %d\n", + client->irq); + return ret; } + irq_chip->name = dev_name(&chip->client->dev); + irq_chip->irq_mask = pca953x_irq_mask; + irq_chip->irq_unmask = pca953x_irq_unmask; + irq_chip->irq_set_wake = pca953x_irq_set_wake; + irq_chip->irq_bus_lock = pca953x_irq_bus_lock; + irq_chip->irq_bus_sync_unlock = pca953x_irq_bus_sync_unlock; + irq_chip->irq_set_type = pca953x_irq_set_type; + irq_chip->irq_shutdown = pca953x_irq_shutdown; + + ret = gpiochip_irqchip_add_nested(&chip->gpio_chip, irq_chip, + irq_base, handle_simple_irq, + IRQ_TYPE_NONE); + if (ret) { + dev_err(&client->dev, + "could not connect irqchip to gpiochip\n"); + return ret; + } + + gpiochip_set_nested_irqchip(&chip->gpio_chip, irq_chip, client->irq); + return 0; } diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c index 68a35b65925a..c9b650f617fa 100644 --- a/drivers/gpio/gpio-pcf857x.c +++ b/drivers/gpio/gpio-pcf857x.c @@ -89,7 +89,6 @@ struct pcf857x { struct mutex lock; /* protect 'out' */ unsigned out; /* software latch */ unsigned status; /* current status */ - unsigned int irq_parent; unsigned irq_enabled; /* enabled irqs */ int (*write)(struct i2c_client *client, unsigned data); @@ -211,18 +210,7 @@ static int pcf857x_irq_set_wake(struct irq_data *data, unsigned int on) { struct pcf857x *gpio = irq_data_get_irq_chip_data(data); - int error = 0; - - if (gpio->irq_parent) { - error = irq_set_irq_wake(gpio->irq_parent, on); - if (error) { - dev_dbg(&gpio->client->dev, - "irq %u doesn't support irq_set_wake\n", - gpio->irq_parent); - gpio->irq_parent = 0; - } - } - return error; + return irq_set_irq_wake(gpio->client->irq, on); } static void pcf857x_irq_enable(struct irq_data *data) @@ -392,7 +380,6 @@ static int pcf857x_probe(struct i2c_client *client, gpiochip_set_nested_irqchip(&gpio->chip, &gpio->irqchip, client->irq); - gpio->irq_parent = client->irq; } /* Let platform code set up the GPIOs and their users. diff --git a/drivers/gpio/gpio-pmic-eic-sprd.c b/drivers/gpio/gpio-pmic-eic-sprd.c index 29e044ff4b17..24228cf79afc 100644 --- a/drivers/gpio/gpio-pmic-eic-sprd.c +++ b/drivers/gpio/gpio-pmic-eic-sprd.c @@ -322,7 +322,6 @@ static int sprd_pmic_eic_probe(struct platform_device *pdev) ret = devm_request_threaded_irq(&pdev->dev, pmic_eic->irq, NULL, sprd_pmic_eic_irq_handler, - IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_NO_SUSPEND, dev_name(&pdev->dev), pmic_eic); if (ret) { @@ -365,7 +364,7 @@ static int sprd_pmic_eic_probe(struct platform_device *pdev) } static const struct of_device_id sprd_pmic_eic_of_match[] = { - { .compatible = "sprd,sc27xx-eic", }, + { .compatible = "sprd,sc2731-eic", }, { /* end of list */ } }; MODULE_DEVICE_TABLE(of, sprd_pmic_eic_of_match); diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index 068ce25ffd28..500a3596aaf4 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -40,6 +40,7 @@ struct gpio_rcar_priv { struct irq_chip irq_chip; unsigned int irq_parent; atomic_t wakeup_path; + bool has_outdtsel; bool has_both_edge_trigger; struct gpio_rcar_bank_info bank_info; }; @@ -55,6 +56,7 @@ struct gpio_rcar_priv { #define POSNEG 0x20 /* Positive/Negative Logic Select Register */ #define EDGLEVEL 0x24 /* Edge/level Select Register */ #define FILONOFF 0x28 /* Chattering Prevention On/Off Register */ +#define OUTDTSEL 0x40 /* Output Data Select Register */ #define BOTHEDGE 0x4c /* One Edge/Both Edge Select Register */ #define RCAR_MAX_GPIO_PER_BANK 32 @@ -235,6 +237,10 @@ static void gpio_rcar_config_general_input_output_mode(struct gpio_chip *chip, /* Select Input Mode or Output Mode in INOUTSEL */ gpio_rcar_modify_bit(p, INOUTSEL, gpio, output); + /* Select General Output Register to output data in OUTDTSEL */ + if (p->has_outdtsel && output) + gpio_rcar_modify_bit(p, OUTDTSEL, gpio, false); + spin_unlock_irqrestore(&p->lock, flags); } @@ -336,14 +342,17 @@ static int gpio_rcar_direction_output(struct gpio_chip *chip, unsigned offset, } struct gpio_rcar_info { + bool has_outdtsel; bool has_both_edge_trigger; }; static const struct gpio_rcar_info gpio_rcar_info_gen1 = { + .has_outdtsel = false, .has_both_edge_trigger = false, }; static const struct gpio_rcar_info gpio_rcar_info_gen2 = { + .has_outdtsel = true, .has_both_edge_trigger = true, }; @@ -403,10 +412,11 @@ static int gpio_rcar_parse_dt(struct gpio_rcar_priv *p, unsigned int *npins) int ret; info = of_device_get_match_data(p->dev); + p->has_outdtsel = info->has_outdtsel; + p->has_both_edge_trigger = info->has_both_edge_trigger; ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &args); *npins = ret == 0 ? args.args[2] : RCAR_MAX_GPIO_PER_BANK; - p->has_both_edge_trigger = info->has_both_edge_trigger; if (*npins == 0 || *npins > RCAR_MAX_GPIO_PER_BANK) { dev_warn(p->dev, "Invalid number of gpio lines %u, using %u\n", diff --git a/drivers/gpio/gpio-sama5d2-piobu.c b/drivers/gpio/gpio-sama5d2-piobu.c index 03a000659fa1..7d718557092e 100644 --- a/drivers/gpio/gpio-sama5d2-piobu.c +++ b/drivers/gpio/gpio-sama5d2-piobu.c @@ -109,16 +109,6 @@ static int sama5d2_piobu_read_value(struct gpio_chip *chip, unsigned int pin, } /** - * sama5d2_piobu_set_direction() - mark pin as input or output - */ -static int sama5d2_piobu_set_direction(struct gpio_chip *chip, - unsigned int direction, - unsigned int pin) -{ - return sama5d2_piobu_write_value(chip, pin, PIOBU_DIRECTION, direction); -} - -/** * sama5d2_piobu_get_direction() - gpiochip get_direction */ static int sama5d2_piobu_get_direction(struct gpio_chip *chip, @@ -138,7 +128,7 @@ static int sama5d2_piobu_get_direction(struct gpio_chip *chip, static int sama5d2_piobu_direction_input(struct gpio_chip *chip, unsigned int pin) { - return sama5d2_piobu_set_direction(chip, PIOBU_IN, pin); + return sama5d2_piobu_write_value(chip, pin, PIOBU_DIRECTION, PIOBU_IN); } /** @@ -147,7 +137,13 @@ static int sama5d2_piobu_direction_input(struct gpio_chip *chip, static int sama5d2_piobu_direction_output(struct gpio_chip *chip, unsigned int pin, int value) { - return sama5d2_piobu_set_direction(chip, PIOBU_OUT, pin); + unsigned int val = PIOBU_OUT; + + if (value) + val |= PIOBU_HIGH; + + return sama5d2_piobu_write_value(chip, pin, PIOBU_DIRECTION | PIOBU_SOD, + val); } /** diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index 02f6db925fd5..1ececf2c3282 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -2,6 +2,7 @@ * arch/arm/mach-tegra/gpio.c * * Copyright (c) 2010 Google, Inc + * Copyright (c) 2011-2016, NVIDIA CORPORATION. All rights reserved. * * Author: * Erik Gilling <konkers@google.com> @@ -141,14 +142,14 @@ static void tegra_gpio_disable(struct tegra_gpio_info *tgi, unsigned int gpio) static int tegra_gpio_request(struct gpio_chip *chip, unsigned int offset) { - return pinctrl_gpio_request(offset); + return pinctrl_gpio_request(chip->base + offset); } static void tegra_gpio_free(struct gpio_chip *chip, unsigned int offset) { struct tegra_gpio_info *tgi = gpiochip_get_data(chip); - pinctrl_gpio_free(offset); + pinctrl_gpio_free(chip->base + offset); tegra_gpio_disable(tgi, offset); } @@ -176,10 +177,18 @@ static int tegra_gpio_direction_input(struct gpio_chip *chip, unsigned int offset) { struct tegra_gpio_info *tgi = gpiochip_get_data(chip); + int ret; tegra_gpio_mask_write(tgi, GPIO_MSK_OE(tgi, offset), offset, 0); tegra_gpio_enable(tgi, offset); - return 0; + + ret = pinctrl_gpio_direction_input(chip->base + offset); + if (ret < 0) + dev_err(tgi->dev, + "Failed to set pinctrl input direction of GPIO %d: %d", + chip->base + offset, ret); + + return ret; } static int tegra_gpio_direction_output(struct gpio_chip *chip, @@ -187,11 +196,19 @@ static int tegra_gpio_direction_output(struct gpio_chip *chip, int value) { struct tegra_gpio_info *tgi = gpiochip_get_data(chip); + int ret; tegra_gpio_set(chip, offset, value); tegra_gpio_mask_write(tgi, GPIO_MSK_OE(tgi, offset), offset, 1); tegra_gpio_enable(tgi, offset); - return 0; + + ret = pinctrl_gpio_direction_output(chip->base + offset); + if (ret < 0) + dev_err(tgi->dev, + "Failed to set pinctrl output direction of GPIO %d: %d", + chip->base + offset, ret); + + return ret; } static int tegra_gpio_get_direction(struct gpio_chip *chip, diff --git a/drivers/gpio/gpio-tegra186.c b/drivers/gpio/gpio-tegra186.c index 66ec38bb7954..7d42e3d7572c 100644 --- a/drivers/gpio/gpio-tegra186.c +++ b/drivers/gpio/gpio-tegra186.c @@ -529,8 +529,8 @@ static int tegra186_gpio_remove(struct platform_device *pdev) return 0; } -#define TEGRA_MAIN_GPIO_PORT(port, base, count, controller) \ - [TEGRA_MAIN_GPIO_PORT_##port] = { \ +#define TEGRA186_MAIN_GPIO_PORT(port, base, count, controller) \ + [TEGRA186_MAIN_GPIO_PORT_##port] = { \ .name = #port, \ .offset = base, \ .pins = count, \ @@ -538,29 +538,29 @@ static int tegra186_gpio_remove(struct platform_device *pdev) } static const struct tegra_gpio_port tegra186_main_ports[] = { - TEGRA_MAIN_GPIO_PORT( A, 0x2000, 7, 2), - TEGRA_MAIN_GPIO_PORT( B, 0x3000, 7, 3), - TEGRA_MAIN_GPIO_PORT( C, 0x3200, 7, 3), - TEGRA_MAIN_GPIO_PORT( D, 0x3400, 6, 3), - TEGRA_MAIN_GPIO_PORT( E, 0x2200, 8, 2), - TEGRA_MAIN_GPIO_PORT( F, 0x2400, 6, 2), - TEGRA_MAIN_GPIO_PORT( G, 0x4200, 6, 4), - TEGRA_MAIN_GPIO_PORT( H, 0x1000, 7, 1), - TEGRA_MAIN_GPIO_PORT( I, 0x0800, 8, 0), - TEGRA_MAIN_GPIO_PORT( J, 0x5000, 8, 5), - TEGRA_MAIN_GPIO_PORT( K, 0x5200, 1, 5), - TEGRA_MAIN_GPIO_PORT( L, 0x1200, 8, 1), - TEGRA_MAIN_GPIO_PORT( M, 0x5600, 6, 5), - TEGRA_MAIN_GPIO_PORT( N, 0x0000, 7, 0), - TEGRA_MAIN_GPIO_PORT( O, 0x0200, 4, 0), - TEGRA_MAIN_GPIO_PORT( P, 0x4000, 7, 4), - TEGRA_MAIN_GPIO_PORT( Q, 0x0400, 6, 0), - TEGRA_MAIN_GPIO_PORT( R, 0x0a00, 6, 0), - TEGRA_MAIN_GPIO_PORT( T, 0x0600, 4, 0), - TEGRA_MAIN_GPIO_PORT( X, 0x1400, 8, 1), - TEGRA_MAIN_GPIO_PORT( Y, 0x1600, 7, 1), - TEGRA_MAIN_GPIO_PORT(BB, 0x2600, 2, 2), - TEGRA_MAIN_GPIO_PORT(CC, 0x5400, 4, 5), + TEGRA186_MAIN_GPIO_PORT( A, 0x2000, 7, 2), + TEGRA186_MAIN_GPIO_PORT( B, 0x3000, 7, 3), + TEGRA186_MAIN_GPIO_PORT( C, 0x3200, 7, 3), + TEGRA186_MAIN_GPIO_PORT( D, 0x3400, 6, 3), + TEGRA186_MAIN_GPIO_PORT( E, 0x2200, 8, 2), + TEGRA186_MAIN_GPIO_PORT( F, 0x2400, 6, 2), + TEGRA186_MAIN_GPIO_PORT( G, 0x4200, 6, 4), + TEGRA186_MAIN_GPIO_PORT( H, 0x1000, 7, 1), + TEGRA186_MAIN_GPIO_PORT( I, 0x0800, 8, 0), + TEGRA186_MAIN_GPIO_PORT( J, 0x5000, 8, 5), + TEGRA186_MAIN_GPIO_PORT( K, 0x5200, 1, 5), + TEGRA186_MAIN_GPIO_PORT( L, 0x1200, 8, 1), + TEGRA186_MAIN_GPIO_PORT( M, 0x5600, 6, 5), + TEGRA186_MAIN_GPIO_PORT( N, 0x0000, 7, 0), + TEGRA186_MAIN_GPIO_PORT( O, 0x0200, 4, 0), + TEGRA186_MAIN_GPIO_PORT( P, 0x4000, 7, 4), + TEGRA186_MAIN_GPIO_PORT( Q, 0x0400, 6, 0), + TEGRA186_MAIN_GPIO_PORT( R, 0x0a00, 6, 0), + TEGRA186_MAIN_GPIO_PORT( T, 0x0600, 4, 0), + TEGRA186_MAIN_GPIO_PORT( X, 0x1400, 8, 1), + TEGRA186_MAIN_GPIO_PORT( Y, 0x1600, 7, 1), + TEGRA186_MAIN_GPIO_PORT(BB, 0x2600, 2, 2), + TEGRA186_MAIN_GPIO_PORT(CC, 0x5400, 4, 5), }; static const struct tegra_gpio_soc tegra186_main_soc = { @@ -569,8 +569,8 @@ static const struct tegra_gpio_soc tegra186_main_soc = { .name = "tegra186-gpio", }; -#define TEGRA_AON_GPIO_PORT(port, base, count, controller) \ - [TEGRA_AON_GPIO_PORT_##port] = { \ +#define TEGRA186_AON_GPIO_PORT(port, base, count, controller) \ + [TEGRA186_AON_GPIO_PORT_##port] = { \ .name = #port, \ .offset = base, \ .pins = count, \ @@ -578,14 +578,14 @@ static const struct tegra_gpio_soc tegra186_main_soc = { } static const struct tegra_gpio_port tegra186_aon_ports[] = { - TEGRA_AON_GPIO_PORT( S, 0x0200, 5, 0), - TEGRA_AON_GPIO_PORT( U, 0x0400, 6, 0), - TEGRA_AON_GPIO_PORT( V, 0x0800, 8, 0), - TEGRA_AON_GPIO_PORT( W, 0x0a00, 8, 0), - TEGRA_AON_GPIO_PORT( Z, 0x0e00, 4, 0), - TEGRA_AON_GPIO_PORT(AA, 0x0c00, 8, 0), - TEGRA_AON_GPIO_PORT(EE, 0x0600, 3, 0), - TEGRA_AON_GPIO_PORT(FF, 0x0000, 5, 0), + TEGRA186_AON_GPIO_PORT( S, 0x0200, 5, 0), + TEGRA186_AON_GPIO_PORT( U, 0x0400, 6, 0), + TEGRA186_AON_GPIO_PORT( V, 0x0800, 8, 0), + TEGRA186_AON_GPIO_PORT( W, 0x0a00, 8, 0), + TEGRA186_AON_GPIO_PORT( Z, 0x0e00, 4, 0), + TEGRA186_AON_GPIO_PORT(AA, 0x0c00, 8, 0), + TEGRA186_AON_GPIO_PORT(EE, 0x0600, 3, 0), + TEGRA186_AON_GPIO_PORT(FF, 0x0000, 5, 0), }; static const struct tegra_gpio_soc tegra186_aon_soc = { diff --git a/drivers/gpio/gpio-tqmx86.c b/drivers/gpio/gpio-tqmx86.c new file mode 100644 index 000000000000..d5880db7f9d4 --- /dev/null +++ b/drivers/gpio/gpio-tqmx86.c @@ -0,0 +1,332 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * TQ-Systems TQMx86 PLD GPIO driver + * + * Based on vendor driver by: + * Vadim V.Vlasov <vvlasov@dev.rtsoft.ru> + */ + +#include <linux/bitops.h> +#include <linux/errno.h> +#include <linux/gpio/driver.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/slab.h> + +#define TQMX86_NGPIO 8 +#define TQMX86_NGPO 4 /* 0-3 - output */ +#define TQMX86_NGPI 4 /* 4-7 - input */ +#define TQMX86_DIR_INPUT_MASK 0xf0 /* 0-3 - output, 4-7 - input */ + +#define TQMX86_GPIODD 0 /* GPIO Data Direction Register */ +#define TQMX86_GPIOD 1 /* GPIO Data Register */ +#define TQMX86_GPIIC 3 /* GPI Interrupt Configuration Register */ +#define TQMX86_GPIIS 4 /* GPI Interrupt Status Register */ + +#define TQMX86_GPII_FALLING BIT(0) +#define TQMX86_GPII_RISING BIT(1) +#define TQMX86_GPII_MASK (BIT(0) | BIT(1)) +#define TQMX86_GPII_BITS 2 + +struct tqmx86_gpio_data { + struct gpio_chip chip; + struct irq_chip irq_chip; + void __iomem *io_base; + int irq; + raw_spinlock_t spinlock; + u8 irq_type[TQMX86_NGPI]; +}; + +static u8 tqmx86_gpio_read(struct tqmx86_gpio_data *gd, unsigned int reg) +{ + return ioread8(gd->io_base + reg); +} + +static void tqmx86_gpio_write(struct tqmx86_gpio_data *gd, u8 val, + unsigned int reg) +{ + iowrite8(val, gd->io_base + reg); +} + +static int tqmx86_gpio_get(struct gpio_chip *chip, unsigned int offset) +{ + struct tqmx86_gpio_data *gpio = gpiochip_get_data(chip); + + return !!(tqmx86_gpio_read(gpio, TQMX86_GPIOD) & BIT(offset)); +} + +static void tqmx86_gpio_set(struct gpio_chip *chip, unsigned int offset, + int value) +{ + struct tqmx86_gpio_data *gpio = gpiochip_get_data(chip); + unsigned long flags; + u8 val; + + raw_spin_lock_irqsave(&gpio->spinlock, flags); + val = tqmx86_gpio_read(gpio, TQMX86_GPIOD); + if (value) + val |= BIT(offset); + else + val &= ~BIT(offset); + tqmx86_gpio_write(gpio, val, TQMX86_GPIOD); + raw_spin_unlock_irqrestore(&gpio->spinlock, flags); +} + +static int tqmx86_gpio_direction_input(struct gpio_chip *chip, + unsigned int offset) +{ + /* Direction cannot be changed. Validate is an input. */ + if (BIT(offset) & TQMX86_DIR_INPUT_MASK) + return 0; + else + return -EINVAL; +} + +static int tqmx86_gpio_direction_output(struct gpio_chip *chip, + unsigned int offset, + int value) +{ + /* Direction cannot be changed, validate is an output */ + if (BIT(offset) & TQMX86_DIR_INPUT_MASK) + return -EINVAL; + + tqmx86_gpio_set(chip, offset, value); + return 0; +} + +static int tqmx86_gpio_get_direction(struct gpio_chip *chip, + unsigned int offset) +{ + return !!(TQMX86_DIR_INPUT_MASK & BIT(offset)); +} + +static void tqmx86_gpio_irq_mask(struct irq_data *data) +{ + unsigned int offset = (data->hwirq - TQMX86_NGPO); + struct tqmx86_gpio_data *gpio = gpiochip_get_data( + irq_data_get_irq_chip_data(data)); + unsigned long flags; + u8 gpiic, mask; + + mask = TQMX86_GPII_MASK << (offset * TQMX86_GPII_BITS); + + raw_spin_lock_irqsave(&gpio->spinlock, flags); + gpiic = tqmx86_gpio_read(gpio, TQMX86_GPIIC); + gpiic &= ~mask; + tqmx86_gpio_write(gpio, gpiic, TQMX86_GPIIC); + raw_spin_unlock_irqrestore(&gpio->spinlock, flags); +} + +static void tqmx86_gpio_irq_unmask(struct irq_data *data) +{ + unsigned int offset = (data->hwirq - TQMX86_NGPO); + struct tqmx86_gpio_data *gpio = gpiochip_get_data( + irq_data_get_irq_chip_data(data)); + unsigned long flags; + u8 gpiic, mask; + + mask = TQMX86_GPII_MASK << (offset * TQMX86_GPII_BITS); + + raw_spin_lock_irqsave(&gpio->spinlock, flags); + gpiic = tqmx86_gpio_read(gpio, TQMX86_GPIIC); + gpiic &= ~mask; + gpiic |= gpio->irq_type[offset] << (offset * TQMX86_GPII_BITS); + tqmx86_gpio_write(gpio, gpiic, TQMX86_GPIIC); + raw_spin_unlock_irqrestore(&gpio->spinlock, flags); +} + +static int tqmx86_gpio_irq_set_type(struct irq_data *data, unsigned int type) +{ + struct tqmx86_gpio_data *gpio = gpiochip_get_data( + irq_data_get_irq_chip_data(data)); + unsigned int offset = (data->hwirq - TQMX86_NGPO); + unsigned int edge_type = type & IRQF_TRIGGER_MASK; + unsigned long flags; + u8 new_type, gpiic; + + switch (edge_type) { + case IRQ_TYPE_EDGE_RISING: + new_type = TQMX86_GPII_RISING; + break; + case IRQ_TYPE_EDGE_FALLING: + new_type = TQMX86_GPII_FALLING; + break; + case IRQ_TYPE_EDGE_BOTH: + new_type = TQMX86_GPII_FALLING | TQMX86_GPII_RISING; + break; + default: + return -EINVAL; /* not supported */ + } + + gpio->irq_type[offset] = new_type; + + raw_spin_lock_irqsave(&gpio->spinlock, flags); + gpiic = tqmx86_gpio_read(gpio, TQMX86_GPIIC); + gpiic &= ~((TQMX86_GPII_MASK) << (offset * TQMX86_GPII_BITS)); + gpiic |= new_type << (offset * TQMX86_GPII_BITS); + tqmx86_gpio_write(gpio, gpiic, TQMX86_GPIIC); + raw_spin_unlock_irqrestore(&gpio->spinlock, flags); + + return 0; +} + +static void tqmx86_gpio_irq_handler(struct irq_desc *desc) +{ + struct gpio_chip *chip = irq_desc_get_handler_data(desc); + struct tqmx86_gpio_data *gpio = gpiochip_get_data(chip); + struct irq_chip *irq_chip = irq_desc_get_chip(desc); + unsigned long irq_bits; + int i = 0, child_irq; + u8 irq_status; + + chained_irq_enter(irq_chip, desc); + + irq_status = tqmx86_gpio_read(gpio, TQMX86_GPIIS); + tqmx86_gpio_write(gpio, irq_status, TQMX86_GPIIS); + + irq_bits = irq_status; + for_each_set_bit(i, &irq_bits, TQMX86_NGPI) { + child_irq = irq_find_mapping(gpio->chip.irq.domain, + i + TQMX86_NGPO); + generic_handle_irq(child_irq); + } + + chained_irq_exit(irq_chip, desc); +} + +/* Minimal runtime PM is needed by the IRQ subsystem */ +static int __maybe_unused tqmx86_gpio_runtime_suspend(struct device *dev) +{ + return 0; +} + +static int __maybe_unused tqmx86_gpio_runtime_resume(struct device *dev) +{ + return 0; +} + +static const struct dev_pm_ops tqmx86_gpio_dev_pm_ops = { + SET_RUNTIME_PM_OPS(tqmx86_gpio_runtime_suspend, + tqmx86_gpio_runtime_resume, NULL) +}; + +static int tqmx86_gpio_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct tqmx86_gpio_data *gpio; + struct gpio_chip *chip; + void __iomem *io_base; + struct resource *res; + int ret, irq; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + res = platform_get_resource(pdev, IORESOURCE_IO, 0); + if (!res) { + dev_err(&pdev->dev, "Cannot get I/O\n"); + return -ENODEV; + } + + io_base = devm_ioport_map(&pdev->dev, res->start, resource_size(res)); + if (!io_base) + return -ENOMEM; + + gpio = devm_kzalloc(dev, sizeof(*gpio), GFP_KERNEL); + if (!gpio) + return -ENOMEM; + + raw_spin_lock_init(&gpio->spinlock); + gpio->io_base = io_base; + + tqmx86_gpio_write(gpio, (u8)~TQMX86_DIR_INPUT_MASK, TQMX86_GPIODD); + + platform_set_drvdata(pdev, gpio); + + chip = &gpio->chip; + chip->label = "gpio-tqmx86"; + chip->owner = THIS_MODULE; + chip->can_sleep = false; + chip->base = -1; + chip->direction_input = tqmx86_gpio_direction_input; + chip->direction_output = tqmx86_gpio_direction_output; + chip->get_direction = tqmx86_gpio_get_direction; + chip->get = tqmx86_gpio_get; + chip->set = tqmx86_gpio_set; + chip->ngpio = TQMX86_NGPIO; + chip->irq.need_valid_mask = true; + chip->parent = pdev->dev.parent; + + pm_runtime_enable(&pdev->dev); + + ret = devm_gpiochip_add_data(dev, chip, gpio); + if (ret) { + dev_err(dev, "Could not register GPIO chip\n"); + goto out_pm_dis; + } + + if (irq) { + struct irq_chip *irq_chip = &gpio->irq_chip; + u8 irq_status; + + irq_chip->name = chip->label; + irq_chip->parent_device = &pdev->dev; + irq_chip->irq_mask = tqmx86_gpio_irq_mask; + irq_chip->irq_unmask = tqmx86_gpio_irq_unmask; + irq_chip->irq_set_type = tqmx86_gpio_irq_set_type; + + /* Mask all interrupts */ + tqmx86_gpio_write(gpio, 0, TQMX86_GPIIC); + + /* Clear all pending interrupts */ + irq_status = tqmx86_gpio_read(gpio, TQMX86_GPIIS); + tqmx86_gpio_write(gpio, irq_status, TQMX86_GPIIS); + + ret = gpiochip_irqchip_add(chip, irq_chip, + 0, handle_simple_irq, + IRQ_TYPE_EDGE_BOTH); + if (ret) { + dev_err(dev, "Could not add irq chip\n"); + goto out_pm_dis; + } + + gpiochip_set_chained_irqchip(chip, irq_chip, + irq, tqmx86_gpio_irq_handler); + } + + /* Only GPIOs 4-7 are valid for interrupts. Clear the others */ + clear_bit(0, chip->irq.valid_mask); + clear_bit(1, chip->irq.valid_mask); + clear_bit(2, chip->irq.valid_mask); + clear_bit(3, chip->irq.valid_mask); + + dev_info(dev, "GPIO functionality initialized with %d pins\n", + chip->ngpio); + + return 0; + +out_pm_dis: + pm_runtime_disable(&pdev->dev); + + return ret; +} + +static struct platform_driver tqmx86_gpio_driver = { + .driver = { + .name = "tqmx86-gpio", + .pm = &tqmx86_gpio_dev_pm_ops, + }, + .probe = tqmx86_gpio_probe, +}; + +module_platform_driver(tqmx86_gpio_driver); + +MODULE_DESCRIPTION("TQMx86 PLD GPIO Driver"); +MODULE_AUTHOR("Andrew Lunn <andrew@lunn.ch>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:tqmx86-gpio"); diff --git a/drivers/gpio/gpio-wcove.c b/drivers/gpio/gpio-wcove.c index dde7c6aecbb5..444fe9e7f04a 100644 --- a/drivers/gpio/gpio-wcove.c +++ b/drivers/gpio/gpio-wcove.c @@ -1,34 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel Whiskey Cove PMIC GPIO Driver * * This driver is written based on gpio-crystalcove.c * * Copyright (C) 2016 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/bitops.h> -#include <linux/module.h> -#include <linux/interrupt.h> #include <linux/gpio/driver.h> +#include <linux/interrupt.h> #include <linux/mfd/intel_soc_pmic.h> +#include <linux/module.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/seq_file.h> /* * Whiskey Cove PMIC has 13 physical GPIO pins divided into 3 banks: - * Bank 0: Pin 0 - 6 - * Bank 1: Pin 7 - 10 - * Bank 2: Pin 11 -12 + * Bank 0: Pin 0 - 6 + * Bank 1: Pin 7 - 10 + * Bank 2: Pin 11 - 12 * Each pin has one output control register and one input control register. */ #define BANK0_NR_PINS 7 @@ -75,8 +67,8 @@ #define CTLO_RVAL_50KDOWN (2 << 1) #define CTLO_RVAL_50KUP (3 << 1) -#define CTLO_INPUT_SET (CTLO_DRV_CMOS | CTLO_DRV_REN | CTLO_RVAL_2KUP) -#define CTLO_OUTPUT_SET (CTLO_DIR_OUT | CTLO_INPUT_SET) +#define CTLO_INPUT_SET (CTLO_DRV_CMOS | CTLO_DRV_REN | CTLO_RVAL_2KUP) +#define CTLO_OUTPUT_SET (CTLO_DIR_OUT | CTLO_INPUT_SET) enum ctrl_register { CTRL_IN, @@ -105,7 +97,7 @@ struct wcove_gpio { bool set_irq_mask; }; -static inline unsigned int to_reg(int gpio, enum ctrl_register reg_type) +static inline int to_reg(int gpio, enum ctrl_register reg_type) { unsigned int reg; @@ -203,8 +195,7 @@ static int wcove_gpio_get(struct gpio_chip *chip, unsigned int gpio) return val & 0x1; } -static void wcove_gpio_set(struct gpio_chip *chip, - unsigned int gpio, int value) +static void wcove_gpio_set(struct gpio_chip *chip, unsigned int gpio, int value) { struct wcove_gpio *wg = gpiochip_get_data(chip); int reg = to_reg(gpio, CTRL_OUT); diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c index b3b4edcdffe0..00ff7b1fa8a1 100644 --- a/drivers/gpio/gpio-zynq.c +++ b/drivers/gpio/gpio-zynq.c @@ -555,6 +555,26 @@ static int zynq_gpio_set_wake(struct irq_data *data, unsigned int on) return 0; } +static int zynq_gpio_irq_reqres(struct irq_data *d) +{ + struct gpio_chip *chip = irq_data_get_irq_chip_data(d); + int ret; + + ret = pm_runtime_get_sync(chip->parent); + if (ret < 0) + return ret; + + return gpiochip_reqres_irq(chip, d->hwirq); +} + +static void zynq_gpio_irq_relres(struct irq_data *d) +{ + struct gpio_chip *chip = irq_data_get_irq_chip_data(d); + + gpiochip_relres_irq(chip, d->hwirq); + pm_runtime_put(chip->parent); +} + /* irq chip descriptor */ static struct irq_chip zynq_gpio_level_irqchip = { .name = DRIVER_NAME, @@ -564,6 +584,8 @@ static struct irq_chip zynq_gpio_level_irqchip = { .irq_unmask = zynq_gpio_irq_unmask, .irq_set_type = zynq_gpio_set_irq_type, .irq_set_wake = zynq_gpio_set_wake, + .irq_request_resources = zynq_gpio_irq_reqres, + .irq_release_resources = zynq_gpio_irq_relres, .flags = IRQCHIP_EOI_THREADED | IRQCHIP_EOI_IF_HANDLED | IRQCHIP_MASK_ON_SUSPEND, }; @@ -576,6 +598,8 @@ static struct irq_chip zynq_gpio_edge_irqchip = { .irq_unmask = zynq_gpio_irq_unmask, .irq_set_type = zynq_gpio_set_irq_type, .irq_set_wake = zynq_gpio_set_wake, + .irq_request_resources = zynq_gpio_irq_reqres, + .irq_release_resources = zynq_gpio_irq_relres, .flags = IRQCHIP_MASK_ON_SUSPEND, }; diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 3e8e2d3ce7a8..30d0baf7ddae 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -29,7 +29,7 @@ * @irq: Linux IRQ number for the event, for request_ / free_irq * @irqflags: flags to pass to request_irq when requesting the IRQ * @irq_is_wake: If the ACPI flags indicate the IRQ is a wakeup source - * @is_requested: True if request_irq has been done + * @irq_requested:True if request_irq has been done * @desc: gpio_desc for the GPIO pin for this event */ struct acpi_gpio_event { @@ -469,6 +469,9 @@ acpi_gpio_to_gpiod_flags(const struct acpi_resource_gpio *agpio) static int __acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, enum gpiod_flags update) { + const enum gpiod_flags mask = + GPIOD_FLAGS_BIT_DIR_SET | GPIOD_FLAGS_BIT_DIR_OUT | + GPIOD_FLAGS_BIT_DIR_VAL; int ret = 0; /* @@ -489,7 +492,7 @@ __acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, enum gpiod_flags update) if (((*flags & GPIOD_FLAGS_BIT_DIR_SET) && (diff & GPIOD_FLAGS_BIT_DIR_OUT)) || ((*flags & GPIOD_FLAGS_BIT_DIR_OUT) && (diff & GPIOD_FLAGS_BIT_DIR_VAL))) ret = -EINVAL; - *flags = update; + *flags = (*flags & ~mask) | (update & mask); } return ret; } diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index c34eb9d9c59a..8b9c3ab70f6e 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -86,7 +86,9 @@ static void of_gpio_flags_quirks(struct device_node *np, if (IS_ENABLED(CONFIG_REGULATOR) && (of_device_is_compatible(np, "regulator-fixed") || of_device_is_compatible(np, "reg-fixed-voltage") || - of_device_is_compatible(np, "regulator-gpio"))) { + (of_device_is_compatible(np, "regulator-gpio") && + !(strcmp(propname, "enable-gpio") && + strcmp(propname, "enable-gpios"))))) { /* * The regulator GPIO handles are specified such that the * presence or absence of "enable-active-high" solely controls @@ -345,6 +347,11 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id, if (of_flags & OF_GPIO_TRANSITORY) *flags |= GPIO_TRANSITORY; + if (of_flags & OF_GPIO_PULL_UP) + *flags |= GPIO_PULL_UP; + if (of_flags & OF_GPIO_PULL_DOWN) + *flags |= GPIO_PULL_DOWN; + return desc; } diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index d1adfdf50fb3..144af0733581 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1782,6 +1782,43 @@ static const struct irq_domain_ops gpiochip_domain_ops = { .xlate = irq_domain_xlate_twocell, }; +/** + * gpiochip_irq_domain_activate() - Lock a GPIO to be used as an IRQ + * @domain: The IRQ domain used by this IRQ chip + * @data: Outermost irq_data associated with the IRQ + * @reserve: If set, only reserve an interrupt vector instead of assigning one + * + * This function is a wrapper that calls gpiochip_lock_as_irq() and is to be + * used as the activate function for the &struct irq_domain_ops. The host_data + * for the IRQ domain must be the &struct gpio_chip. + */ +int gpiochip_irq_domain_activate(struct irq_domain *domain, + struct irq_data *data, bool reserve) +{ + struct gpio_chip *chip = domain->host_data; + + return gpiochip_lock_as_irq(chip, data->hwirq); +} +EXPORT_SYMBOL_GPL(gpiochip_irq_domain_activate); + +/** + * gpiochip_irq_domain_deactivate() - Unlock a GPIO used as an IRQ + * @domain: The IRQ domain used by this IRQ chip + * @data: Outermost irq_data associated with the IRQ + * + * This function is a wrapper that will call gpiochip_unlock_as_irq() and is to + * be used as the deactivate function for the &struct irq_domain_ops. The + * host_data for the IRQ domain must be the &struct gpio_chip. + */ +void gpiochip_irq_domain_deactivate(struct irq_domain *domain, + struct irq_data *data) +{ + struct gpio_chip *chip = domain->host_data; + + return gpiochip_unlock_as_irq(chip, data->hwirq); +} +EXPORT_SYMBOL_GPL(gpiochip_irq_domain_deactivate); + static int gpiochip_to_irq(struct gpio_chip *chip, unsigned offset) { if (!gpiochip_irqchip_irq_valid(chip, offset)) @@ -2525,6 +2562,14 @@ EXPORT_SYMBOL_GPL(gpiochip_free_own_desc); * rely on gpio_request() having been called beforehand. */ +static int gpio_set_config(struct gpio_chip *gc, unsigned offset, + enum pin_config_param mode) +{ + unsigned long config = { PIN_CONF_PACKED(mode, 0) }; + + return gc->set_config ? gc->set_config(gc, offset, config) : -ENOTSUPP; +} + /** * gpiod_direction_input - set the GPIO direction to input * @desc: GPIO to set to input @@ -2572,20 +2617,19 @@ int gpiod_direction_input(struct gpio_desc *desc) if (status == 0) clear_bit(FLAG_IS_OUT, &desc->flags); + if (test_bit(FLAG_PULL_UP, &desc->flags)) + gpio_set_config(chip, gpio_chip_hwgpio(desc), + PIN_CONFIG_BIAS_PULL_UP); + else if (test_bit(FLAG_PULL_DOWN, &desc->flags)) + gpio_set_config(chip, gpio_chip_hwgpio(desc), + PIN_CONFIG_BIAS_PULL_DOWN); + trace_gpio_direction(desc_to_gpio(desc), 1, status); return status; } EXPORT_SYMBOL_GPL(gpiod_direction_input); -static int gpio_set_drive_single_ended(struct gpio_chip *gc, unsigned offset, - enum pin_config_param mode) -{ - unsigned long config = { PIN_CONF_PACKED(mode, 0) }; - - return gc->set_config ? gc->set_config(gc, offset, config) : -ENOTSUPP; -} - static int gpiod_direction_output_raw_commit(struct gpio_desc *desc, int value) { struct gpio_chip *gc = desc->gdev->chip; @@ -2682,8 +2726,8 @@ int gpiod_direction_output(struct gpio_desc *desc, int value) gc = desc->gdev->chip; if (test_bit(FLAG_OPEN_DRAIN, &desc->flags)) { /* First see if we can enable open drain in hardware */ - ret = gpio_set_drive_single_ended(gc, gpio_chip_hwgpio(desc), - PIN_CONFIG_DRIVE_OPEN_DRAIN); + ret = gpio_set_config(gc, gpio_chip_hwgpio(desc), + PIN_CONFIG_DRIVE_OPEN_DRAIN); if (!ret) goto set_output_value; /* Emulate open drain by not actively driving the line high */ @@ -2691,16 +2735,16 @@ int gpiod_direction_output(struct gpio_desc *desc, int value) return gpiod_direction_input(desc); } else if (test_bit(FLAG_OPEN_SOURCE, &desc->flags)) { - ret = gpio_set_drive_single_ended(gc, gpio_chip_hwgpio(desc), - PIN_CONFIG_DRIVE_OPEN_SOURCE); + ret = gpio_set_config(gc, gpio_chip_hwgpio(desc), + PIN_CONFIG_DRIVE_OPEN_SOURCE); if (!ret) goto set_output_value; /* Emulate open source by not actively driving the line low */ if (!value) return gpiod_direction_input(desc); } else { - gpio_set_drive_single_ended(gc, gpio_chip_hwgpio(desc), - PIN_CONFIG_DRIVE_PUSH_PULL); + gpio_set_config(gc, gpio_chip_hwgpio(desc), + PIN_CONFIG_DRIVE_PUSH_PULL); } set_output_value: @@ -2732,7 +2776,7 @@ int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce) } config = pinconf_to_config_packed(PIN_CONFIG_INPUT_DEBOUNCE, debounce); - return chip->set_config(chip, gpio_chip_hwgpio(desc), config); + return gpio_set_config(chip, gpio_chip_hwgpio(desc), config); } EXPORT_SYMBOL_GPL(gpiod_set_debounce); @@ -2769,7 +2813,7 @@ int gpiod_set_transitory(struct gpio_desc *desc, bool transitory) packed = pinconf_to_config_packed(PIN_CONFIG_PERSIST_STATE, !transitory); gpio = gpio_chip_hwgpio(desc); - rc = chip->set_config(chip, gpio, packed); + rc = gpio_set_config(chip, gpio, packed); if (rc == -ENOTSUPP) { dev_dbg(&desc->gdev->dev, "Persistence not supported for GPIO %d\n", gpio); @@ -4057,6 +4101,17 @@ int gpiod_configure_flags(struct gpio_desc *desc, const char *con_id, if (lflags & GPIO_OPEN_SOURCE) set_bit(FLAG_OPEN_SOURCE, &desc->flags); + if ((lflags & GPIO_PULL_UP) && (lflags & GPIO_PULL_DOWN)) { + gpiod_err(desc, + "both pull-up and pull-down enabled, invalid configuration\n"); + return -EINVAL; + } + + if (lflags & GPIO_PULL_UP) + set_bit(FLAG_PULL_UP, &desc->flags); + else if (lflags & GPIO_PULL_DOWN) + set_bit(FLAG_PULL_DOWN, &desc->flags); + status = gpiod_set_transitory(desc, (lflags & GPIO_TRANSITORY)); if (status < 0) return status; diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h index bc57f0dc5953..078ab17b96bf 100644 --- a/drivers/gpio/gpiolib.h +++ b/drivers/gpio/gpiolib.h @@ -219,6 +219,8 @@ struct gpio_desc { #define FLAG_IRQ_IS_ENABLED 10 /* GPIO is connected to an enabled IRQ */ #define FLAG_IS_HOGGED 11 /* GPIO is hogged */ #define FLAG_TRANSITORY 12 /* GPIO may lose value in sleep or reset */ +#define FLAG_PULL_UP 13 /* GPIO has pull up enabled */ +#define FLAG_PULL_DOWN 14 /* GPIO has pull down enabled */ /* Connection label */ const char *label; diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 1b50fa955992..ad8b1f400919 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -927,7 +927,7 @@ config UCB1400_CORE config MFD_PM8XXX tristate "Qualcomm PM8xxx PMIC chips driver" depends on (ARM || HEXAGON || COMPILE_TEST) - select IRQ_DOMAIN + select IRQ_DOMAIN_HIERARCHY select MFD_CORE select REGMAP help diff --git a/drivers/mfd/qcom-pm8xxx.c b/drivers/mfd/qcom-pm8xxx.c index e6e8d81c15fd..8eb2528793f9 100644 --- a/drivers/mfd/qcom-pm8xxx.c +++ b/drivers/mfd/qcom-pm8xxx.c @@ -70,22 +70,23 @@ #define PM8XXX_NR_IRQS 256 #define PM8821_NR_IRQS 112 +struct pm_irq_data { + int num_irqs; + struct irq_chip *irq_chip; + void (*irq_handler)(struct irq_desc *desc); +}; + struct pm_irq_chip { struct regmap *regmap; spinlock_t pm_irq_lock; struct irq_domain *irqdomain; - unsigned int num_irqs; unsigned int num_blocks; unsigned int num_masters; + const struct pm_irq_data *pm_irq_data; + /* MUST BE AT THE END OF THIS STRUCT */ u8 config[0]; }; -struct pm_irq_data { - int num_irqs; - const struct irq_domain_ops *irq_domain_ops; - void (*irq_handler)(struct irq_desc *desc); -}; - static int pm8xxx_read_block_irq(struct pm_irq_chip *chip, unsigned int bp, unsigned int *ip) { @@ -375,21 +376,38 @@ static struct irq_chip pm8xxx_irq_chip = { .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE, }; -static int pm8xxx_irq_domain_map(struct irq_domain *d, unsigned int irq, - irq_hw_number_t hwirq) +static void pm8xxx_irq_domain_map(struct pm_irq_chip *chip, + struct irq_domain *domain, unsigned int irq, + irq_hw_number_t hwirq, unsigned int type) { - struct pm_irq_chip *chip = d->host_data; - - irq_set_chip_and_handler(irq, &pm8xxx_irq_chip, handle_level_irq); - irq_set_chip_data(irq, chip); + irq_domain_set_info(domain, irq, hwirq, chip->pm_irq_data->irq_chip, + chip, handle_level_irq, NULL, NULL); irq_set_noprobe(irq); +} + +static int pm8xxx_irq_domain_alloc(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs, void *data) +{ + struct pm_irq_chip *chip = domain->host_data; + struct irq_fwspec *fwspec = data; + irq_hw_number_t hwirq; + unsigned int type; + int ret, i; + + ret = irq_domain_translate_twocell(domain, fwspec, &hwirq, &type); + if (ret) + return ret; + + for (i = 0; i < nr_irqs; i++) + pm8xxx_irq_domain_map(chip, domain, virq + i, hwirq + i, type); return 0; } static const struct irq_domain_ops pm8xxx_irq_domain_ops = { - .xlate = irq_domain_xlate_twocell, - .map = pm8xxx_irq_domain_map, + .alloc = pm8xxx_irq_domain_alloc, + .free = irq_domain_free_irqs_common, + .translate = irq_domain_translate_twocell, }; static void pm8821_irq_mask_ack(struct irq_data *d) @@ -473,23 +491,6 @@ static struct irq_chip pm8821_irq_chip = { .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE, }; -static int pm8821_irq_domain_map(struct irq_domain *d, unsigned int irq, - irq_hw_number_t hwirq) -{ - struct pm_irq_chip *chip = d->host_data; - - irq_set_chip_and_handler(irq, &pm8821_irq_chip, handle_level_irq); - irq_set_chip_data(irq, chip); - irq_set_noprobe(irq); - - return 0; -} - -static const struct irq_domain_ops pm8821_irq_domain_ops = { - .xlate = irq_domain_xlate_twocell, - .map = pm8821_irq_domain_map, -}; - static const struct regmap_config ssbi_regmap_config = { .reg_bits = 16, .val_bits = 8, @@ -501,13 +502,13 @@ static const struct regmap_config ssbi_regmap_config = { static const struct pm_irq_data pm8xxx_data = { .num_irqs = PM8XXX_NR_IRQS, - .irq_domain_ops = &pm8xxx_irq_domain_ops, + .irq_chip = &pm8xxx_irq_chip, .irq_handler = pm8xxx_irq_handler, }; static const struct pm_irq_data pm8821_data = { .num_irqs = PM8821_NR_IRQS, - .irq_domain_ops = &pm8821_irq_domain_ops, + .irq_chip = &pm8821_irq_chip, .irq_handler = pm8821_irq_handler, }; @@ -571,14 +572,14 @@ static int pm8xxx_probe(struct platform_device *pdev) platform_set_drvdata(pdev, chip); chip->regmap = regmap; - chip->num_irqs = data->num_irqs; - chip->num_blocks = DIV_ROUND_UP(chip->num_irqs, 8); + chip->num_blocks = DIV_ROUND_UP(data->num_irqs, 8); chip->num_masters = DIV_ROUND_UP(chip->num_blocks, 8); + chip->pm_irq_data = data; spin_lock_init(&chip->pm_irq_lock); chip->irqdomain = irq_domain_add_linear(pdev->dev.of_node, data->num_irqs, - data->irq_domain_ops, + &pm8xxx_irq_domain_ops, chip); if (!chip->irqdomain) return -ENODEV; diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig index 836e9f3eae4c..2e66ab72c10b 100644 --- a/drivers/pinctrl/qcom/Kconfig +++ b/drivers/pinctrl/qcom/Kconfig @@ -137,6 +137,7 @@ config PINCTRL_QCOM_SPMI_PMIC select PINMUX select PINCONF select GENERIC_PINCONF + select IRQ_DOMAIN_HIERARCHY help This is the pinctrl, pinmux, pinconf and gpiolib driver for the Qualcomm GPIO and MPP blocks found in the Qualcomm PMIC's chips, @@ -149,6 +150,7 @@ config PINCTRL_QCOM_SSBI_PMIC select PINMUX select PINCONF select GENERIC_PINCONF + select IRQ_DOMAIN_HIERARCHY help This is the pinctrl, pinmux, pinconf and gpiolib driver for the Qualcomm GPIO and MPP blocks found in the Qualcomm PMIC's chips, diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c index 4458d44dfcf6..cb512c7a5251 100644 --- a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c +++ b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c @@ -12,6 +12,7 @@ */ #include <linux/gpio/driver.h> +#include <linux/interrupt.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_irq.h> @@ -136,7 +137,6 @@ enum pmic_gpio_func_index { /** * struct pmic_gpio_pad - keep current GPIO settings * @base: Address base in SPMI device. - * @irq: IRQ number which this GPIO generate. * @is_enabled: Set to false when GPIO should be put in high Z state. * @out_value: Cached pin output value * @have_buffer: Set to true if GPIO output could be configured in push-pull, @@ -156,7 +156,6 @@ enum pmic_gpio_func_index { */ struct pmic_gpio_pad { u16 base; - int irq; bool is_enabled; bool out_value; bool have_buffer; @@ -179,6 +178,8 @@ struct pmic_gpio_state { struct regmap *map; struct pinctrl_dev *ctrl; struct gpio_chip chip; + struct fwnode_handle *fwnode; + struct irq_domain *domain; }; static const struct pinconf_generic_params pmic_gpio_bindings[] = { @@ -761,11 +762,18 @@ static int pmic_gpio_of_xlate(struct gpio_chip *chip, static int pmic_gpio_to_irq(struct gpio_chip *chip, unsigned pin) { struct pmic_gpio_state *state = gpiochip_get_data(chip); - struct pmic_gpio_pad *pad; + struct irq_fwspec fwspec; - pad = state->ctrl->desc->pins[pin].drv_data; + fwspec.fwnode = state->fwnode; + fwspec.param_count = 2; + fwspec.param[0] = pin + PMIC_GPIO_PHYSICAL_OFFSET; + /* + * Set the type to a safe value temporarily. This will be overwritten + * later with the proper value by irq_set_type. + */ + fwspec.param[1] = IRQ_TYPE_EDGE_RISING; - return pad->irq; + return irq_create_fwspec_mapping(&fwspec); } static void pmic_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) @@ -935,8 +943,79 @@ static int pmic_gpio_populate(struct pmic_gpio_state *state, return 0; } +static struct irq_chip pmic_gpio_irq_chip = { + .name = "spmi-gpio", + .irq_ack = irq_chip_ack_parent, + .irq_mask = irq_chip_mask_parent, + .irq_unmask = irq_chip_unmask_parent, + .irq_set_type = irq_chip_set_type_parent, + .irq_set_wake = irq_chip_set_wake_parent, + .flags = IRQCHIP_MASK_ON_SUSPEND, +}; + +static int pmic_gpio_domain_translate(struct irq_domain *domain, + struct irq_fwspec *fwspec, + unsigned long *hwirq, + unsigned int *type) +{ + struct pmic_gpio_state *state = container_of(domain->host_data, + struct pmic_gpio_state, + chip); + + if (fwspec->param_count != 2 || + fwspec->param[0] < 1 || fwspec->param[0] > state->chip.ngpio) + return -EINVAL; + + *hwirq = fwspec->param[0] - PMIC_GPIO_PHYSICAL_OFFSET; + *type = fwspec->param[1]; + + return 0; +} + +static int pmic_gpio_domain_alloc(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs, void *data) +{ + struct pmic_gpio_state *state = container_of(domain->host_data, + struct pmic_gpio_state, + chip); + struct irq_fwspec *fwspec = data; + struct irq_fwspec parent_fwspec; + irq_hw_number_t hwirq; + unsigned int type; + int ret, i; + + ret = pmic_gpio_domain_translate(domain, fwspec, &hwirq, &type); + if (ret) + return ret; + + for (i = 0; i < nr_irqs; i++) + irq_domain_set_info(domain, virq + i, hwirq + i, + &pmic_gpio_irq_chip, state, + handle_level_irq, NULL, NULL); + + parent_fwspec.fwnode = domain->parent->fwnode; + parent_fwspec.param_count = 4; + parent_fwspec.param[0] = 0; + parent_fwspec.param[1] = hwirq + 0xc0; + parent_fwspec.param[2] = 0; + parent_fwspec.param[3] = fwspec->param[1]; + + return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, + &parent_fwspec); +} + +static const struct irq_domain_ops pmic_gpio_domain_ops = { + .activate = gpiochip_irq_domain_activate, + .alloc = pmic_gpio_domain_alloc, + .deactivate = gpiochip_irq_domain_deactivate, + .free = irq_domain_free_irqs_common, + .translate = pmic_gpio_domain_translate, +}; + static int pmic_gpio_probe(struct platform_device *pdev) { + struct irq_domain *parent_domain; + struct device_node *parent_node; struct device *dev = &pdev->dev; struct pinctrl_pin_desc *pindesc; struct pinctrl_desc *pctrldesc; @@ -951,13 +1030,7 @@ static int pmic_gpio_probe(struct platform_device *pdev) return ret; } - npins = platform_irq_count(pdev); - if (!npins) - return -EINVAL; - if (npins < 0) - return npins; - - BUG_ON(npins > ARRAY_SIZE(pmic_gpio_groups)); + npins = (uintptr_t) device_get_match_data(&pdev->dev); state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL); if (!state) @@ -999,10 +1072,6 @@ static int pmic_gpio_probe(struct platform_device *pdev) pindesc->number = i; pindesc->name = pmic_gpio_groups[i]; - pad->irq = platform_get_irq(pdev, i); - if (pad->irq < 0) - return pad->irq; - pad->base = reg + i * PMIC_GPIO_ADDRESS_RANGE; ret = pmic_gpio_populate(state, pad); @@ -1022,10 +1091,28 @@ static int pmic_gpio_probe(struct platform_device *pdev) if (IS_ERR(state->ctrl)) return PTR_ERR(state->ctrl); + parent_node = of_irq_find_parent(state->dev->of_node); + if (!parent_node) + return -ENXIO; + + parent_domain = irq_find_host(parent_node); + of_node_put(parent_node); + if (!parent_domain) + return -ENXIO; + + state->fwnode = of_node_to_fwnode(state->dev->of_node); + state->domain = irq_domain_create_hierarchy(parent_domain, 0, + state->chip.ngpio, + state->fwnode, + &pmic_gpio_domain_ops, + &state->chip); + if (!state->domain) + return -ENODEV; + ret = gpiochip_add_data(&state->chip, state); if (ret) { dev_err(state->dev, "can't add gpio chip\n"); - return ret; + goto err_chip_add_data; } /* @@ -1051,6 +1138,8 @@ static int pmic_gpio_probe(struct platform_device *pdev) err_range: gpiochip_remove(&state->chip); +err_chip_add_data: + irq_domain_remove(state->domain); return ret; } @@ -1059,17 +1148,21 @@ static int pmic_gpio_remove(struct platform_device *pdev) struct pmic_gpio_state *state = platform_get_drvdata(pdev); gpiochip_remove(&state->chip); + irq_domain_remove(state->domain); return 0; } static const struct of_device_id pmic_gpio_of_match[] = { - { .compatible = "qcom,pm8916-gpio" }, /* 4 GPIO's */ - { .compatible = "qcom,pm8941-gpio" }, /* 36 GPIO's */ - { .compatible = "qcom,pm8994-gpio" }, /* 22 GPIO's */ - { .compatible = "qcom,pmi8994-gpio" }, /* 10 GPIO's */ - { .compatible = "qcom,pma8084-gpio" }, /* 22 GPIO's */ - { .compatible = "qcom,pms405-gpio" }, /* 12 GPIO's, holes on 1 9 10 */ - { .compatible = "qcom,spmi-gpio" }, /* Generic */ + { .compatible = "qcom,pm8005-gpio", .data = (void *) 4 }, + { .compatible = "qcom,pm8916-gpio", .data = (void *) 4 }, + { .compatible = "qcom,pm8941-gpio", .data = (void *) 36 }, + { .compatible = "qcom,pm8994-gpio", .data = (void *) 22 }, + { .compatible = "qcom,pmi8994-gpio", .data = (void *) 10 }, + { .compatible = "qcom,pm8998-gpio", .data = (void *) 26 }, + { .compatible = "qcom,pmi8998-gpio", .data = (void *) 14 }, + { .compatible = "qcom,pma8084-gpio", .data = (void *) 22 }, + /* pms405 has 12 GPIOs with holes on 1, 9, and 10 */ + { .compatible = "qcom,pms405-gpio", .data = (void *) 12 }, { }, }; diff --git a/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c b/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c index ded7d765af2e..08dd62b5cebe 100644 --- a/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c +++ b/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c @@ -55,6 +55,8 @@ #define PM8XXX_MAX_GPIOS 44 +#define PM8XXX_GPIO_PHYSICAL_OFFSET 1 + /* custom pinconf parameters */ #define PM8XXX_QCOM_DRIVE_STRENGH (PIN_CONFIG_END + 1) #define PM8XXX_QCOM_PULL_UP_STRENGTH (PIN_CONFIG_END + 2) @@ -99,6 +101,9 @@ struct pm8xxx_gpio { struct pinctrl_desc desc; unsigned npins; + + struct fwnode_handle *fwnode; + struct irq_domain *domain; }; static const struct pinconf_generic_params pm8xxx_gpio_bindings[] = { @@ -499,11 +504,12 @@ static int pm8xxx_gpio_get(struct gpio_chip *chip, unsigned offset) if (pin->mode == PM8XXX_GPIO_MODE_OUTPUT) { ret = pin->output_value; - } else { + } else if (pin->irq >= 0) { ret = irq_get_irqchip_state(pin->irq, IRQCHIP_STATE_LINE_LEVEL, &state); if (!ret) ret = !!state; - } + } else + ret = -EINVAL; return ret; } @@ -533,7 +539,7 @@ static int pm8xxx_gpio_of_xlate(struct gpio_chip *chip, if (flags) *flags = gpio_desc->args[1]; - return gpio_desc->args[0] - 1; + return gpio_desc->args[0] - PM8XXX_GPIO_PHYSICAL_OFFSET; } @@ -541,8 +547,31 @@ static int pm8xxx_gpio_to_irq(struct gpio_chip *chip, unsigned offset) { struct pm8xxx_gpio *pctrl = gpiochip_get_data(chip); struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; + struct irq_fwspec fwspec; + int ret; + + fwspec.fwnode = pctrl->fwnode; + fwspec.param_count = 2; + fwspec.param[0] = offset + PM8XXX_GPIO_PHYSICAL_OFFSET; + fwspec.param[1] = IRQ_TYPE_EDGE_RISING; + + ret = irq_create_fwspec_mapping(&fwspec); + + /* + * Cache the IRQ since pm8xxx_gpio_get() needs this to get determine the + * line level. + */ + pin->irq = ret; + + return ret; +} + +static void pm8xxx_gpio_free(struct gpio_chip *chip, unsigned int offset) +{ + struct pm8xxx_gpio *pctrl = gpiochip_get_data(chip); + struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; - return pin->irq; + pin->irq = -1; } #ifdef CONFIG_DEBUG_FS @@ -571,7 +600,7 @@ static void pm8xxx_gpio_dbg_show_one(struct seq_file *s, "no", "high", "medium", "low" }; - seq_printf(s, " gpio%-2d:", offset + 1); + seq_printf(s, " gpio%-2d:", offset + PM8XXX_GPIO_PHYSICAL_OFFSET); if (pin->disable) { seq_puts(s, " ---"); } else { @@ -603,6 +632,7 @@ static void pm8xxx_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) #endif static const struct gpio_chip pm8xxx_gpio_template = { + .free = pm8xxx_gpio_free, .direction_input = pm8xxx_gpio_direction_input, .direction_output = pm8xxx_gpio_direction_output, .get = pm8xxx_gpio_get, @@ -664,13 +694,75 @@ static int pm8xxx_pin_populate(struct pm8xxx_gpio *pctrl, return 0; } +static struct irq_chip pm8xxx_irq_chip = { + .name = "ssbi-gpio", + .irq_mask_ack = irq_chip_mask_ack_parent, + .irq_unmask = irq_chip_unmask_parent, + .irq_set_type = irq_chip_set_type_parent, + .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE, +}; + +static int pm8xxx_domain_translate(struct irq_domain *domain, + struct irq_fwspec *fwspec, + unsigned long *hwirq, + unsigned int *type) +{ + struct pm8xxx_gpio *pctrl = container_of(domain->host_data, + struct pm8xxx_gpio, chip); + + if (fwspec->param_count != 2 || fwspec->param[0] < 1 || + fwspec->param[0] > pctrl->chip.ngpio) + return -EINVAL; + + *hwirq = fwspec->param[0] - PM8XXX_GPIO_PHYSICAL_OFFSET; + *type = fwspec->param[1]; + + return 0; +} + +static int pm8xxx_domain_alloc(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs, void *data) +{ + struct pm8xxx_gpio *pctrl = container_of(domain->host_data, + struct pm8xxx_gpio, chip); + struct irq_fwspec *fwspec = data; + struct irq_fwspec parent_fwspec; + irq_hw_number_t hwirq; + unsigned int type; + int ret, i; + + ret = pm8xxx_domain_translate(domain, fwspec, &hwirq, &type); + if (ret) + return ret; + + for (i = 0; i < nr_irqs; i++) + irq_domain_set_info(domain, virq + i, hwirq + i, + &pm8xxx_irq_chip, pctrl, handle_level_irq, + NULL, NULL); + + parent_fwspec.fwnode = domain->parent->fwnode; + parent_fwspec.param_count = 2; + parent_fwspec.param[0] = hwirq + 0xc0; + parent_fwspec.param[1] = fwspec->param[1]; + + return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, + &parent_fwspec); +} + +static const struct irq_domain_ops pm8xxx_domain_ops = { + .activate = gpiochip_irq_domain_activate, + .alloc = pm8xxx_domain_alloc, + .deactivate = gpiochip_irq_domain_deactivate, + .free = irq_domain_free_irqs_common, + .translate = pm8xxx_domain_translate, +}; + static const struct of_device_id pm8xxx_gpio_of_match[] = { - { .compatible = "qcom,pm8018-gpio" }, - { .compatible = "qcom,pm8038-gpio" }, - { .compatible = "qcom,pm8058-gpio" }, - { .compatible = "qcom,pm8917-gpio" }, - { .compatible = "qcom,pm8921-gpio" }, - { .compatible = "qcom,ssbi-gpio" }, + { .compatible = "qcom,pm8018-gpio", .data = (void *) 6 }, + { .compatible = "qcom,pm8038-gpio", .data = (void *) 12 }, + { .compatible = "qcom,pm8058-gpio", .data = (void *) 44 }, + { .compatible = "qcom,pm8917-gpio", .data = (void *) 38 }, + { .compatible = "qcom,pm8921-gpio", .data = (void *) 44 }, { }, }; MODULE_DEVICE_TABLE(of, pm8xxx_gpio_of_match); @@ -678,22 +770,18 @@ MODULE_DEVICE_TABLE(of, pm8xxx_gpio_of_match); static int pm8xxx_gpio_probe(struct platform_device *pdev) { struct pm8xxx_pin_data *pin_data; + struct irq_domain *parent_domain; + struct device_node *parent_node; struct pinctrl_pin_desc *pins; struct pm8xxx_gpio *pctrl; - int ret; - int i, npins; + int ret, i; pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL); if (!pctrl) return -ENOMEM; pctrl->dev = &pdev->dev; - npins = platform_irq_count(pdev); - if (!npins) - return -EINVAL; - if (npins < 0) - return npins; - pctrl->npins = npins; + pctrl->npins = (uintptr_t) device_get_match_data(&pdev->dev); pctrl->regmap = dev_get_regmap(pdev->dev.parent, NULL); if (!pctrl->regmap) { @@ -720,12 +808,7 @@ static int pm8xxx_gpio_probe(struct platform_device *pdev) for (i = 0; i < pctrl->desc.npins; i++) { pin_data[i].reg = SSBI_REG_ADDR_GPIO(i); - pin_data[i].irq = platform_get_irq(pdev, i); - if (pin_data[i].irq < 0) { - dev_err(&pdev->dev, - "missing interrupts for pin %d\n", i); - return pin_data[i].irq; - } + pin_data[i].irq = -1; ret = pm8xxx_pin_populate(pctrl, &pin_data[i]); if (ret) @@ -756,10 +839,29 @@ static int pm8xxx_gpio_probe(struct platform_device *pdev) pctrl->chip.of_gpio_n_cells = 2; pctrl->chip.label = dev_name(pctrl->dev); pctrl->chip.ngpio = pctrl->npins; + + parent_node = of_irq_find_parent(pctrl->dev->of_node); + if (!parent_node) + return -ENXIO; + + parent_domain = irq_find_host(parent_node); + of_node_put(parent_node); + if (!parent_domain) + return -ENXIO; + + pctrl->fwnode = of_node_to_fwnode(pctrl->dev->of_node); + pctrl->domain = irq_domain_create_hierarchy(parent_domain, 0, + pctrl->chip.ngpio, + pctrl->fwnode, + &pm8xxx_domain_ops, + &pctrl->chip); + if (!pctrl->domain) + return -ENODEV; + ret = gpiochip_add_data(&pctrl->chip, pctrl); if (ret) { dev_err(&pdev->dev, "failed register gpiochip\n"); - return ret; + goto err_chip_add_data; } /* @@ -789,6 +891,8 @@ static int pm8xxx_gpio_probe(struct platform_device *pdev) unregister_gpiochip: gpiochip_remove(&pctrl->chip); +err_chip_add_data: + irq_domain_remove(pctrl->domain); return ret; } @@ -798,6 +902,7 @@ static int pm8xxx_gpio_remove(struct platform_device *pdev) struct pm8xxx_gpio *pctrl = platform_get_drvdata(pdev); gpiochip_remove(&pctrl->chip); + irq_domain_remove(pctrl->domain); return 0; } diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index b5e9db85e881..a1ed13183559 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -1303,6 +1303,20 @@ config HUAWEI_WMI To compile this driver as a module, choose M here: the module will be called huawei-wmi. +config PCENGINES_APU2 + tristate "PC Engines APUv2/3 front button and LEDs driver" + depends on INPUT && INPUT_KEYBOARD + depends on LEDS_CLASS + select GPIO_AMD_FCH + select KEYBOARD_GPIO_POLLED + select LEDS_GPIO + help + This driver provides support for the front button and LEDs on + PC Engines APUv2/APUv3 board. + + To compile this driver as a module, choose M here: the module + will be called pcengines-apuv2. + endif # X86_PLATFORM_DEVICES config PMC_ATOM diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index ce8da260c223..86cb76677bc8 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -96,3 +96,4 @@ obj-$(CONFIG_INTEL_TURBO_MAX_3) += intel_turbo_max_3.o obj-$(CONFIG_INTEL_CHTDC_TI_PWRBTN) += intel_chtdc_ti_pwrbtn.o obj-$(CONFIG_I2C_MULTI_INSTANTIATE) += i2c-multi-instantiate.o obj-$(CONFIG_INTEL_ATOMISP2_PM) += intel_atomisp2_pm.o +obj-$(CONFIG_PCENGINES_APU2) += pcengines-apuv2.o diff --git a/drivers/platform/x86/pcengines-apuv2.c b/drivers/platform/x86/pcengines-apuv2.c new file mode 100644 index 000000000000..c1ca931e1fab --- /dev/null +++ b/drivers/platform/x86/pcengines-apuv2.c @@ -0,0 +1,260 @@ +// SPDX-License-Identifier: GPL-2.0+ + +/* + * PC-Engines APUv2/APUv3 board platform driver + * for gpio buttons and LEDs + * + * Copyright (C) 2018 metux IT consult + * Author: Enrico Weigelt <info@metux.net> + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/dmi.h> +#include <linux/err.h> +#include <linux/kernel.h> +#include <linux/leds.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/gpio_keys.h> +#include <linux/gpio/machine.h> +#include <linux/input.h> +#include <linux/platform_data/gpio/gpio-amd-fch.h> + +/* + * NOTE: this driver only supports APUv2/3 - not APUv1, as this one + * has completely different register layouts + */ + +/* register mappings */ +#define APU2_GPIO_REG_LED1 AMD_FCH_GPIO_REG_GPIO57 +#define APU2_GPIO_REG_LED2 AMD_FCH_GPIO_REG_GPIO58 +#define APU2_GPIO_REG_LED3 AMD_FCH_GPIO_REG_GPIO59_DEVSLP1 +#define APU2_GPIO_REG_MODESW AMD_FCH_GPIO_REG_GPIO32_GE1 +#define APU2_GPIO_REG_SIMSWAP AMD_FCH_GPIO_REG_GPIO33_GE2 + +/* order in which the gpio lines are defined in the register list */ +#define APU2_GPIO_LINE_LED1 0 +#define APU2_GPIO_LINE_LED2 1 +#define APU2_GPIO_LINE_LED3 2 +#define APU2_GPIO_LINE_MODESW 3 +#define APU2_GPIO_LINE_SIMSWAP 4 + +/* gpio device */ + +static int apu2_gpio_regs[] = { + [APU2_GPIO_LINE_LED1] = APU2_GPIO_REG_LED1, + [APU2_GPIO_LINE_LED2] = APU2_GPIO_REG_LED2, + [APU2_GPIO_LINE_LED3] = APU2_GPIO_REG_LED3, + [APU2_GPIO_LINE_MODESW] = APU2_GPIO_REG_MODESW, + [APU2_GPIO_LINE_SIMSWAP] = APU2_GPIO_REG_SIMSWAP, +}; + +static const char * const apu2_gpio_names[] = { + [APU2_GPIO_LINE_LED1] = "front-led1", + [APU2_GPIO_LINE_LED2] = "front-led2", + [APU2_GPIO_LINE_LED3] = "front-led3", + [APU2_GPIO_LINE_MODESW] = "front-button", + [APU2_GPIO_LINE_SIMSWAP] = "simswap", +}; + +static const struct amd_fch_gpio_pdata board_apu2 = { + .gpio_num = ARRAY_SIZE(apu2_gpio_regs), + .gpio_reg = apu2_gpio_regs, + .gpio_names = apu2_gpio_names, +}; + +/* gpio leds device */ + +static const struct gpio_led apu2_leds[] = { + { .name = "apu:green:1" }, + { .name = "apu:green:2" }, + { .name = "apu:green:3" } +}; + +static const struct gpio_led_platform_data apu2_leds_pdata = { + .num_leds = ARRAY_SIZE(apu2_leds), + .leds = apu2_leds, +}; + +struct gpiod_lookup_table gpios_led_table = { + .dev_id = "leds-gpio", + .table = { + GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED1, + NULL, 0, GPIO_ACTIVE_LOW), + GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED2, + NULL, 1, GPIO_ACTIVE_LOW), + GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED3, + NULL, 2, GPIO_ACTIVE_LOW), + } +}; + +/* gpio keyboard device */ + +static struct gpio_keys_button apu2_keys_buttons[] = { + { + .code = KEY_SETUP, + .active_low = 1, + .desc = "front button", + .type = EV_KEY, + .debounce_interval = 10, + .value = 1, + }, +}; + +static const struct gpio_keys_platform_data apu2_keys_pdata = { + .buttons = apu2_keys_buttons, + .nbuttons = ARRAY_SIZE(apu2_keys_buttons), + .poll_interval = 100, + .rep = 0, + .name = "apu2-keys", +}; + +struct gpiod_lookup_table gpios_key_table = { + .dev_id = "gpio-keys-polled", + .table = { + GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_MODESW, + NULL, 0, GPIO_ACTIVE_LOW), + } +}; + +/* board setup */ + +/* note: matching works on string prefix, so "apu2" must come before "apu" */ +static const struct dmi_system_id apu_gpio_dmi_table[] __initconst = { + + /* APU2 w/ legacy bios < 4.0.8 */ + { + .ident = "apu2", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), + DMI_MATCH(DMI_BOARD_NAME, "APU2") + }, + .driver_data = (void *)&board_apu2, + }, + /* APU2 w/ legacy bios >= 4.0.8 */ + { + .ident = "apu2", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), + DMI_MATCH(DMI_BOARD_NAME, "apu2") + }, + .driver_data = (void *)&board_apu2, + }, + /* APU2 w/ maainline bios */ + { + .ident = "apu2", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), + DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu2") + }, + .driver_data = (void *)&board_apu2, + }, + + /* APU3 w/ legacy bios < 4.0.8 */ + { + .ident = "apu3", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), + DMI_MATCH(DMI_BOARD_NAME, "APU3") + }, + .driver_data = (void *)&board_apu2, + }, + /* APU3 w/ legacy bios >= 4.0.8 */ + { + .ident = "apu3", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), + DMI_MATCH(DMI_BOARD_NAME, "apu3") + }, + .driver_data = (void *)&board_apu2, + }, + /* APU3 w/ mainline bios */ + { + .ident = "apu3", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), + DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu3") + }, + .driver_data = (void *)&board_apu2, + }, + {} +}; + +static struct platform_device *apu_gpio_pdev; +static struct platform_device *apu_leds_pdev; +static struct platform_device *apu_keys_pdev; + +static struct platform_device * __init apu_create_pdev( + const char *name, + const void *pdata, + size_t sz) +{ + struct platform_device *pdev; + + pdev = platform_device_register_resndata(NULL, + name, + PLATFORM_DEVID_NONE, + NULL, + 0, + pdata, + sz); + + if (IS_ERR(pdev)) + pr_err("failed registering %s: %ld\n", name, PTR_ERR(pdev)); + + return pdev; +} + +static int __init apu_board_init(void) +{ + const struct dmi_system_id *id; + + id = dmi_first_match(apu_gpio_dmi_table); + if (!id) { + pr_err("failed to detect apu board via dmi\n"); + return -ENODEV; + } + + gpiod_add_lookup_table(&gpios_led_table); + gpiod_add_lookup_table(&gpios_key_table); + + apu_gpio_pdev = apu_create_pdev( + AMD_FCH_GPIO_DRIVER_NAME, + id->driver_data, + sizeof(struct amd_fch_gpio_pdata)); + + apu_leds_pdev = apu_create_pdev( + "leds-gpio", + &apu2_leds_pdata, + sizeof(apu2_leds_pdata)); + + apu_keys_pdev = apu_create_pdev( + "gpio-keys-polled", + &apu2_keys_pdata, + sizeof(apu2_keys_pdata)); + + return 0; +} + +static void __exit apu_board_exit(void) +{ + gpiod_remove_lookup_table(&gpios_led_table); + gpiod_remove_lookup_table(&gpios_key_table); + + platform_device_unregister(apu_keys_pdev); + platform_device_unregister(apu_leds_pdev); + platform_device_unregister(apu_gpio_pdev); +} + +module_init(apu_board_init); +module_exit(apu_board_exit); + +MODULE_AUTHOR("Enrico Weigelt, metux IT consult <info@metux.net>"); +MODULE_DESCRIPTION("PC Engines APUv2/APUv3 board GPIO/LED/keys driver"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(dmi, apu_gpio_dmi_table); +MODULE_ALIAS("platform:pcengines-apuv2"); +MODULE_SOFTDEP("pre: platform:" AMD_FCH_GPIO_DRIVER_NAME); +MODULE_SOFTDEP("pre: platform:leds-gpio"); +MODULE_SOFTDEP("pre: platform:gpio_keys_polled"); diff --git a/drivers/spmi/Kconfig b/drivers/spmi/Kconfig index 0d3b70b3bda8..d48ed7c2c6c4 100644 --- a/drivers/spmi/Kconfig +++ b/drivers/spmi/Kconfig @@ -12,7 +12,7 @@ if SPMI config SPMI_MSM_PMIC_ARB tristate "Qualcomm MSM SPMI Controller (PMIC Arbiter)" - select IRQ_DOMAIN + select IRQ_DOMAIN_HIERARCHY depends on ARCH_QCOM || COMPILE_TEST depends on HAS_IOMEM default ARCH_QCOM diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c index 360b8218f322..928759242e42 100644 --- a/drivers/spmi/spmi-pmic-arb.c +++ b/drivers/spmi/spmi-pmic-arb.c @@ -666,7 +666,8 @@ static int qpnpint_get_irqchip_state(struct irq_data *d, return 0; } -static int qpnpint_irq_request_resources(struct irq_data *d) +static int qpnpint_irq_domain_activate(struct irq_domain *domain, + struct irq_data *d, bool reserve) { struct spmi_pmic_arb *pmic_arb = irq_data_get_irq_chip_data(d); u16 periph = hwirq_to_per(d->hwirq); @@ -692,27 +693,25 @@ static struct irq_chip pmic_arb_irqchip = { .irq_set_type = qpnpint_irq_set_type, .irq_set_wake = qpnpint_irq_set_wake, .irq_get_irqchip_state = qpnpint_get_irqchip_state, - .irq_request_resources = qpnpint_irq_request_resources, .flags = IRQCHIP_MASK_ON_SUSPEND, }; -static int qpnpint_irq_domain_dt_translate(struct irq_domain *d, - struct device_node *controller, - const u32 *intspec, - unsigned int intsize, - unsigned long *out_hwirq, - unsigned int *out_type) +static int qpnpint_irq_domain_translate(struct irq_domain *d, + struct irq_fwspec *fwspec, + unsigned long *out_hwirq, + unsigned int *out_type) { struct spmi_pmic_arb *pmic_arb = d->host_data; + u32 *intspec = fwspec->param; u16 apid, ppid; int rc; dev_dbg(&pmic_arb->spmic->dev, "intspec[0] 0x%1x intspec[1] 0x%02x intspec[2] 0x%02x\n", intspec[0], intspec[1], intspec[2]); - if (irq_domain_get_of_node(d) != controller) + if (irq_domain_get_of_node(d) != pmic_arb->spmic->dev.of_node) return -EINVAL; - if (intsize != 4) + if (fwspec->param_count != 4) return -EINVAL; if (intspec[0] > 0xF || intspec[1] > 0xFF || intspec[2] > 0x7) return -EINVAL; @@ -740,17 +739,43 @@ static int qpnpint_irq_domain_dt_translate(struct irq_domain *d, return 0; } -static int qpnpint_irq_domain_map(struct irq_domain *d, - unsigned int virq, - irq_hw_number_t hwirq) + +static void qpnpint_irq_domain_map(struct spmi_pmic_arb *pmic_arb, + struct irq_domain *domain, unsigned int virq, + irq_hw_number_t hwirq, unsigned int type) { - struct spmi_pmic_arb *pmic_arb = d->host_data; + irq_flow_handler_t handler; + + dev_dbg(&pmic_arb->spmic->dev, "virq = %u, hwirq = %lu, type = %u\n", + virq, hwirq, type); + + if (type & IRQ_TYPE_EDGE_BOTH) + handler = handle_edge_irq; + else + handler = handle_level_irq; + + irq_domain_set_info(domain, virq, hwirq, &pmic_arb_irqchip, pmic_arb, + handler, NULL, NULL); +} + +static int qpnpint_irq_domain_alloc(struct irq_domain *domain, + unsigned int virq, unsigned int nr_irqs, + void *data) +{ + struct spmi_pmic_arb *pmic_arb = domain->host_data; + struct irq_fwspec *fwspec = data; + irq_hw_number_t hwirq; + unsigned int type; + int ret, i; + + ret = qpnpint_irq_domain_translate(domain, fwspec, &hwirq, &type); + if (ret) + return ret; - dev_dbg(&pmic_arb->spmic->dev, "virq = %u, hwirq = %lu\n", virq, hwirq); + for (i = 0; i < nr_irqs; i++) + qpnpint_irq_domain_map(pmic_arb, domain, virq + i, hwirq + i, + type); - irq_set_chip_and_handler(virq, &pmic_arb_irqchip, handle_level_irq); - irq_set_chip_data(virq, d->host_data); - irq_set_noprobe(virq); return 0; } @@ -1126,8 +1151,10 @@ static const struct pmic_arb_ver_ops pmic_arb_v5 = { }; static const struct irq_domain_ops pmic_arb_irq_domain_ops = { - .map = qpnpint_irq_domain_map, - .xlate = qpnpint_irq_domain_dt_translate, + .activate = qpnpint_irq_domain_activate, + .alloc = qpnpint_irq_domain_alloc, + .free = irq_domain_free_irqs_common, + .translate = qpnpint_irq_domain_translate, }; static int spmi_pmic_arb_probe(struct platform_device *pdev) diff --git a/include/dt-bindings/gpio/gpio.h b/include/dt-bindings/gpio/gpio.h index 2cc10ae4bbb7..c029467e828b 100644 --- a/include/dt-bindings/gpio/gpio.h +++ b/include/dt-bindings/gpio/gpio.h @@ -33,4 +33,10 @@ #define GPIO_PERSISTENT 0 #define GPIO_TRANSITORY 8 +/* Bit 4 express pull up */ +#define GPIO_PULL_UP 16 + +/* Bit 5 express pull down */ +#define GPIO_PULL_DOWN 32 + #endif diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 07cddbf45186..01497910f023 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -472,6 +472,11 @@ int gpiochip_irq_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hwirq); void gpiochip_irq_unmap(struct irq_domain *d, unsigned int irq); +int gpiochip_irq_domain_activate(struct irq_domain *domain, + struct irq_data *data, bool reserve); +void gpiochip_irq_domain_deactivate(struct irq_domain *domain, + struct irq_data *data); + void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip, struct irq_chip *irqchip, unsigned int parent_irq, diff --git a/include/linux/gpio/machine.h b/include/linux/gpio/machine.h index daa44eac9241..69673be10213 100644 --- a/include/linux/gpio/machine.h +++ b/include/linux/gpio/machine.h @@ -12,6 +12,8 @@ enum gpio_lookup_flags { GPIO_OPEN_SOURCE = (1 << 2), GPIO_PERSISTENT = (0 << 3), GPIO_TRANSITORY = (1 << 3), + GPIO_PULL_UP = (1 << 4), + GPIO_PULL_DOWN = (1 << 5), }; /** diff --git a/include/linux/irq.h b/include/linux/irq.h index 5e91f6bcaacd..d6160d479b14 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -615,6 +615,7 @@ extern void irq_chip_disable_parent(struct irq_data *data); extern void irq_chip_ack_parent(struct irq_data *data); extern int irq_chip_retrigger_hierarchy(struct irq_data *data); extern void irq_chip_mask_parent(struct irq_data *data); +extern void irq_chip_mask_ack_parent(struct irq_data *data); extern void irq_chip_unmask_parent(struct irq_data *data); extern void irq_chip_eoi_parent(struct irq_data *data); extern int irq_chip_set_affinity_parent(struct irq_data *data, diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index d2130dc7c0e6..61706b430907 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -420,6 +420,11 @@ int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr, const u32 *intspec, unsigned int intsize, irq_hw_number_t *out_hwirq, unsigned int *out_type); +int irq_domain_translate_twocell(struct irq_domain *d, + struct irq_fwspec *fwspec, + unsigned long *out_hwirq, + unsigned int *out_type); + /* IPI functions */ int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest); int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest); diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h index 163b79ecd01a..f9737dea9d1f 100644 --- a/include/linux/of_gpio.h +++ b/include/linux/of_gpio.h @@ -28,6 +28,8 @@ enum of_gpio_flags { OF_GPIO_SINGLE_ENDED = 0x2, OF_GPIO_OPEN_DRAIN = 0x4, OF_GPIO_TRANSITORY = 0x8, + OF_GPIO_PULL_UP = 0x10, + OF_GPIO_PULL_DOWN = 0x20, }; #ifdef CONFIG_OF_GPIO diff --git a/include/linux/platform_data/gpio/gpio-amd-fch.h b/include/linux/platform_data/gpio/gpio-amd-fch.h new file mode 100644 index 000000000000..a867637e172d --- /dev/null +++ b/include/linux/platform_data/gpio/gpio-amd-fch.h @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: GPL+ */ + +/* + * AMD FCH gpio driver platform-data + * + * Copyright (C) 2018 metux IT consult + * Author: Enrico Weigelt <info@metux.net> + * + */ + +#ifndef __LINUX_PLATFORM_DATA_GPIO_AMD_FCH_H +#define __LINUX_PLATFORM_DATA_GPIO_AMD_FCH_H + +#define AMD_FCH_GPIO_DRIVER_NAME "gpio_amd_fch" + +/* + * gpio register index definitions + */ +#define AMD_FCH_GPIO_REG_GPIO49 0x40 +#define AMD_FCH_GPIO_REG_GPIO50 0x41 +#define AMD_FCH_GPIO_REG_GPIO51 0x42 +#define AMD_FCH_GPIO_REG_GPIO59_DEVSLP0 0x43 +#define AMD_FCH_GPIO_REG_GPIO57 0x44 +#define AMD_FCH_GPIO_REG_GPIO58 0x45 +#define AMD_FCH_GPIO_REG_GPIO59_DEVSLP1 0x46 +#define AMD_FCH_GPIO_REG_GPIO64 0x47 +#define AMD_FCH_GPIO_REG_GPIO68 0x48 +#define AMD_FCH_GPIO_REG_GPIO66_SPKR 0x5B +#define AMD_FCH_GPIO_REG_GPIO71 0x4D +#define AMD_FCH_GPIO_REG_GPIO32_GE1 0x59 +#define AMD_FCH_GPIO_REG_GPIO33_GE2 0x5A +#define AMT_FCH_GPIO_REG_GEVT22 0x09 + +/* + * struct amd_fch_gpio_pdata - GPIO chip platform data + * @gpio_num: number of entries + * @gpio_reg: array of gpio registers + * @gpio_names: array of gpio names + */ +struct amd_fch_gpio_pdata { + int gpio_num; + int *gpio_reg; + const char * const *gpio_names; +}; + +#endif /* __LINUX_PLATFORM_DATA_GPIO_AMD_FCH_H */ diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 466a8d02e298..cc464850b71e 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -52,6 +52,9 @@ extern struct device platform_bus; extern void arch_setup_pdev_archdata(struct platform_device *); extern struct resource *platform_get_resource(struct platform_device *, unsigned int, unsigned int); +extern void __iomem * +devm_platform_ioremap_resource(struct platform_device *pdev, + unsigned int index); extern int platform_get_irq(struct platform_device *, unsigned int); extern int platform_irq_count(struct platform_device *); extern struct resource *platform_get_resource_byname(struct platform_device *, diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 99b7dd6982a4..3faef4a77f71 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -1340,6 +1340,17 @@ void irq_chip_mask_parent(struct irq_data *data) EXPORT_SYMBOL_GPL(irq_chip_mask_parent); /** + * irq_chip_mask_ack_parent - Mask and acknowledge the parent interrupt + * @data: Pointer to interrupt specific data + */ +void irq_chip_mask_ack_parent(struct irq_data *data) +{ + data = data->parent_data; + data->chip->irq_mask_ack(data); +} +EXPORT_SYMBOL_GPL(irq_chip_mask_ack_parent); + +/** * irq_chip_unmask_parent - Unmask the parent interrupt * @data: Pointer to interrupt specific data */ @@ -1443,6 +1454,7 @@ int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on) return -ENOSYS; } +EXPORT_SYMBOL_GPL(irq_chip_set_wake_parent); #endif /** diff --git a/kernel/irq/irq_sim.c b/kernel/irq/irq_sim.c index 98a20e1594ce..b992f88c5613 100644 --- a/kernel/irq/irq_sim.c +++ b/kernel/irq/irq_sim.c @@ -25,10 +25,22 @@ static void irq_sim_irqunmask(struct irq_data *data) irq_ctx->enabled = true; } +static int irq_sim_set_type(struct irq_data *data, unsigned int type) +{ + /* We only support rising and falling edge trigger types. */ + if (type & ~IRQ_TYPE_EDGE_BOTH) + return -EINVAL; + + irqd_set_trigger_type(data, type); + + return 0; +} + static struct irq_chip irq_sim_irqchip = { .name = "irq_sim", .irq_mask = irq_sim_irqmask, .irq_unmask = irq_sim_irqunmask, + .irq_set_type = irq_sim_set_type, }; static void irq_sim_handle_irq(struct irq_work *work) diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 3bf9793d8825..9ed29e4a7dbf 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -743,16 +743,17 @@ static int irq_domain_translate(struct irq_domain *d, return 0; } -static void of_phandle_args_to_fwspec(struct of_phandle_args *irq_data, +static void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args, + unsigned int count, struct irq_fwspec *fwspec) { int i; - fwspec->fwnode = irq_data->np ? &irq_data->np->fwnode : NULL; - fwspec->param_count = irq_data->args_count; + fwspec->fwnode = np ? &np->fwnode : NULL; + fwspec->param_count = count; - for (i = 0; i < irq_data->args_count; i++) - fwspec->param[i] = irq_data->args[i]; + for (i = 0; i < count; i++) + fwspec->param[i] = args[i]; } unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec) @@ -850,7 +851,9 @@ unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data) { struct irq_fwspec fwspec; - of_phandle_args_to_fwspec(irq_data, &fwspec); + of_phandle_args_to_fwspec(irq_data->np, irq_data->args, + irq_data->args_count, &fwspec); + return irq_create_fwspec_mapping(&fwspec); } EXPORT_SYMBOL_GPL(irq_create_of_mapping); @@ -942,11 +945,10 @@ int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr, const u32 *intspec, unsigned int intsize, irq_hw_number_t *out_hwirq, unsigned int *out_type) { - if (WARN_ON(intsize < 2)) - return -EINVAL; - *out_hwirq = intspec[0]; - *out_type = intspec[1] & IRQ_TYPE_SENSE_MASK; - return 0; + struct irq_fwspec fwspec; + + of_phandle_args_to_fwspec(ctrlr, intspec, intsize, &fwspec); + return irq_domain_translate_twocell(d, &fwspec, out_hwirq, out_type); } EXPORT_SYMBOL_GPL(irq_domain_xlate_twocell); @@ -982,6 +984,27 @@ const struct irq_domain_ops irq_domain_simple_ops = { }; EXPORT_SYMBOL_GPL(irq_domain_simple_ops); +/** + * irq_domain_translate_twocell() - Generic translate for direct two cell + * bindings + * + * Device Tree IRQ specifier translation function which works with two cell + * bindings where the cell values map directly to the hwirq number + * and linux irq flags. + */ +int irq_domain_translate_twocell(struct irq_domain *d, + struct irq_fwspec *fwspec, + unsigned long *out_hwirq, + unsigned int *out_type) +{ + if (WARN_ON(fwspec->param_count < 2)) + return -EINVAL; + *out_hwirq = fwspec->param[0]; + *out_type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK; + return 0; +} +EXPORT_SYMBOL_GPL(irq_domain_translate_twocell); + int irq_domain_alloc_descs(int virq, unsigned int cnt, irq_hw_number_t hwirq, int node, const struct irq_affinity_desc *affinity) { |