pcengines/apu1: Add ACPI led, button and GPIO devices.
Provide ACPI devices with devicetree-compatible annotations for the three leds and the button of the APU1, as well as the GPIO driver. This will cause the Linux kernel to automatically load the following modules: leds_gpio (CONFIG_LEDS_GPIO) gpio_keys_polled (CONFIG_KEYBOARD_GPIO_POLLED) gpio_sb8xx (CONFIG_GPIO_SB8XX) See http://events.linuxfoundation.org/sites/events/files/slides/ACPI_vs_DT.pdf and https://lwn.net/Articles/612062/ for some more information on how the PRP0001 HID works. To make this usable a Linux GPIO driver for the AMD chipset is also required, which I am currently working on, but have not submitted upstream yet. Leds have been named after the convention in Documentation/leds/leds-class.txt: LED Device Naming ================= Is currently of the form: "devicename:colour:function" For comparison, on an OpenWRT device: GPIOs 0-21, ath79: gpio-1 (tp-link:green:usb ) out hi gpio-2 (tp-link:green:system) out lo gpio-3 (reset ) in hi gpio-5 (tp-link:green:qss ) out lo gpio-7 (qss ) in hi gpio-9 (tp-link:green:wlan ) out lo gpio-18 (rtl8366rb ) in hi gpio-19 (rtl8366rb ) in hi On the apu1: GPIOs 288-511, platform/PRP0001:00, AMD SB8XX/SB9XX/A5X/A8X GPIO driver: gpio-475 (switch1 ) in hi gpio-477 (apu1:green:led1 ) out hi gpio-478 (apu1:green:led2 ) out hi gpio-479 (apu1:green:led3 ) out hi Change-Id: I956ee92d9d98ef27a83ccb30d314543bd8634f2c Signed-off-by: Tobias Diedrich <ranma+coreboot@tdiedrich.de> Reviewed-on: http://review.coreboot.org/10540 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
This commit is contained in:
Tobias Diedrich
Patrick Georgi
parent
69139e0e2a
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/*
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* This file is part of the coreboot project.
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*
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* Based on the example of Mika Westerberg: https://lwn.net/Articles/612062/
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*
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* Copyright (C) 2015 Tobias Diedrich, Mika Westerberg
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc.
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*/
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Scope (\_SB.PCI0.SBUS)
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{
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Device (BTNS)
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{
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Name (_HID, "PRP0001")
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Name (_CRS, ResourceTemplate () {
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GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
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"\\_SB.PCI0.SBUS.GPIO", 0, ResourceConsumer) {187}
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})
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Name (_DSD, Package () {
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ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
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Package () {
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Package () {"compatible", Package () {"gpio-keys-polled"}},
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Package () {"poll-interval", 100},
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Package () {"autorepeat", 1}
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}
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})
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Device (BTN1)
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{
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Name (_DSD, Package () {
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ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
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Package () {
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/* BTN_1 is 0x101 in linux/input.h */
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Package () {"linux,code", 257},
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Package () {"linux,input-type", 1},
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/* labeled S1 on the board, MODESW in the gpio header files */
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Package () {"label", "switch1"},
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Package () {"gpios", Package () {^^BTNS, 0, 0, 1 /* low-active */}},
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}
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})
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}
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}
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}
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/*
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* This file is part of the coreboot project.
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*
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* Based on the example of Mika Westerberg: https://lwn.net/Articles/612062/
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*
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* Copyright (C) 2015 Tobias Diedrich, Mika Westerberg
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc.
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*/
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Scope (\_SB.PCI0.SBUS)
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{
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Device (GPIO)
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{
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Name (_HID, "PRP0001")
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Name (_CRS, ResourceTemplate () {
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/* ACPI_MMIO_BASE + gpio offset */
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Memory32Fixed(ReadWrite, 0xFED80100, 0x0000100)
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})
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Name (_DSD, Package () {
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ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
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Package () {
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Package () {"compatible", Package () {"gpio-sb8xx"}},
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}
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})
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}
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}
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/*
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* This file is part of the coreboot project.
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*
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* Based on the example of Mika Westerberg: https://lwn.net/Articles/612062/
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*
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* Copyright (C) 2015 Tobias Diedrich, Mika Westerberg
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc.
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*/
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Scope (\_SB.PCI0.SBUS)
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{
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Device (LEDS)
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{
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Name (_HID, "PRP0001")
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Name (_CRS, ResourceTemplate () {
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GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionOutputOnly,
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"\\_SB.PCI0.SBUS.GPIO", 0, ResourceConsumer) {189, 190, 191}
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})
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Name (_DSD, Package () {
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ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
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Package () {
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Package () {"compatible", Package () {"gpio-leds"}},
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}
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})
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Device (LED1)
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{
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Name (_DSD, Package () {
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ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
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Package () {
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/*
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* From Linux Documentation/leds/leds-class.txt:
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* LED Device Naming
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* Is currently of the form:
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* "devicename:colour:function"
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*/
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Package () {"label", "apu1:green:led1"},
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Package () {"gpios", Package () {^^LEDS, 0, 0, 1 /* low-active */}},
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Package () {"default-state", "keep"},
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} }) }
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Device (LED2)
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{
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Name (_DSD, Package () {
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ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
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Package () {
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Package () {"label", "apu1:green:led2"},
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Package () {"gpios", Package () {^^LEDS, 0, 1, 1 /* low-active */}},
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Package () {"default-state", "keep"},
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}
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})
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}
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Device (LED3)
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{
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Name (_DSD, Package () {
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ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
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Package () {
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Package () {"label", "apu1:green:led3"},
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Package () {"gpios", Package () {^^LEDS, 0, 2, 1 /* low-active */}},
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Package () {"default-state", "keep"},
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}
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})
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}
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}
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}
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@ -64,6 +64,12 @@ DefinitionBlock (
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#include "acpi/sleep.asl"
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#include "acpi/sleep.asl"
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#include "acpi/gpe.asl"
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#include "acpi/gpe.asl"
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/* Contains the GPIO led and button setup for this board */
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#include "acpi/buttons.asl"
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#include "acpi/gpio.asl"
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#include "acpi/leds.asl"
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#include "acpi/thermal.asl"
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#include "acpi/thermal.asl"
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}
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}
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/* End of ASL file */
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/* End of ASL file */
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