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>
2015-06-13 13:29:50 +02:00 · 2015-06-13 13:29:50 +02:00 · 2a38551bb7
parent 69139e0e2a
commit 2a38551bb7
4 changed files with 183 additions and 0 deletions
--- a/src/mainboard/pcengines/apu1/acpi/buttons.asl
+++ b/src/mainboard/pcengines/apu1/acpi/buttons.asl
@ -0,0 +1,57 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Based on the example of Mika Westerberg: https://lwn.net/Articles/612062/
+ *
+ * Copyright (C) 2015 Tobias Diedrich, Mika Westerberg
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+Scope (\_SB.PCI0.SBUS)
+{
+	Device (BTNS)
+	{
+		Name (_HID, "PRP0001")
+
+		Name (_CRS, ResourceTemplate () {
+			GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
+				"\\_SB.PCI0.SBUS.GPIO", 0, ResourceConsumer) {187}
+		})
+
+		Name (_DSD, Package () {
+			ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
+			Package () {
+				Package () {"compatible", Package () {"gpio-keys-polled"}},
+				Package () {"poll-interval", 100},
+				Package () {"autorepeat", 1}
+			}
+		})
+
+		Device (BTN1)
+		{
+			Name (_DSD, Package () {
+				ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
+				Package () {
+					/* BTN_1 is 0x101 in linux/input.h */
+					Package () {"linux,code", 257},
+					Package () {"linux,input-type", 1},
+					/* labeled S1 on the board, MODESW in the gpio header files */
+					Package () {"label", "switch1"},
+					Package () {"gpios", Package () {^^BTNS, 0, 0, 1 /* low-active */}},
+				}
+			})
+		}
+	}
+}
--- a/src/mainboard/pcengines/apu1/acpi/gpio.asl
+++ b/src/mainboard/pcengines/apu1/acpi/gpio.asl
@ -0,0 +1,40 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Based on the example of Mika Westerberg: https://lwn.net/Articles/612062/
+ *
+ * Copyright (C) 2015 Tobias Diedrich, Mika Westerberg
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+Scope (\_SB.PCI0.SBUS)
+{
+	Device (GPIO)
+	{
+		Name (_HID, "PRP0001")
+
+		Name (_CRS, ResourceTemplate () {
+			/* ACPI_MMIO_BASE + gpio offset */
+			Memory32Fixed(ReadWrite, 0xFED80100, 0x0000100)
+		})
+
+		Name (_DSD, Package () {
+			ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
+			Package () {
+				Package () {"compatible", Package () {"gpio-sb8xx"}},
+			}
+		})
+	}
+}
--- a/src/mainboard/pcengines/apu1/acpi/leds.asl
+++ b/src/mainboard/pcengines/apu1/acpi/leds.asl
@ -0,0 +1,80 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Based on the example of Mika Westerberg: https://lwn.net/Articles/612062/
+ *
+ * Copyright (C) 2015 Tobias Diedrich, Mika Westerberg
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+Scope (\_SB.PCI0.SBUS)
+{
+	Device (LEDS)
+	{
+		Name (_HID, "PRP0001")
+
+		Name (_CRS, ResourceTemplate () {
+			GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionOutputOnly,
+				"\\_SB.PCI0.SBUS.GPIO", 0, ResourceConsumer) {189, 190, 191}
+		})
+
+		Name (_DSD, Package () {
+			ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
+			Package () {
+				Package () {"compatible", Package () {"gpio-leds"}},
+			}
+		})
+
+		Device (LED1)
+		{
+			Name (_DSD, Package () {
+				ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
+				Package () {
+					/*
+					 * From Linux Documentation/leds/leds-class.txt:
+					 * LED Device Naming
+					 * Is currently of the form:
+					 * "devicename:colour:function"
+					 */
+					Package () {"label", "apu1:green:led1"},
+					Package () {"gpios", Package () {^^LEDS, 0, 0, 1 /* low-active */}},
+					Package () {"default-state", "keep"},
+				} }) }
+
+		Device (LED2)
+		{
+			Name (_DSD, Package () {
+				ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
+				Package () {
+					Package () {"label", "apu1:green:led2"},
+					Package () {"gpios", Package () {^^LEDS, 0, 1, 1 /* low-active */}},
+					Package () {"default-state", "keep"},
+				}
+			})
+		}
+
+		Device (LED3)
+		{
+			Name (_DSD, Package () {
+				ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
+				Package () {
+					Package () {"label", "apu1:green:led3"},
+					Package () {"gpios", Package () {^^LEDS, 0, 2, 1 /* low-active */}},
+					Package () {"default-state", "keep"},
+				}
+			})
+		}
+	}
+}
--- a/src/mainboard/pcengines/apu1/dsdt.asl
+++ b/src/mainboard/pcengines/apu1/dsdt.asl
@ -64,6 +64,12 @@ DefinitionBlock (
 	#include "acpi/sleep.asl"

 	#include "acpi/gpe.asl"
+
+	/* Contains the GPIO led and button setup for this board */
+	#include "acpi/buttons.asl"
+	#include "acpi/gpio.asl"
+	#include "acpi/leds.asl"
+
 	#include "acpi/thermal.asl"
 }
 /* End of ASL file */