Control intel edison GPIO problem for ACPI table
Question
I have some question about ACPI table. I want to control Intel Edison default GPIO on boot, so I make ACPI table to control it. But did not cause any changes. This is my ASL code:
Device (DEV)
{
Name (_HID, "PRP0001")
Name (_DDN, "GPIO LEDs device")
Name (_CRS, ResourceTemplate()
{
GpioIo (Shared, PullNone, 0x0000, 0x0000,
IoRestrictionOutputOnly, "\\_SB.PCI0.GPI0",
0x00, ResourceConsumer,,){12,13}
})
Name (_DSD, Package () {
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () { "compatible", Package() { "gpio-leds" } },
},
ToUUID("dbb8e3e6-5886-4ba6-8795-1319f52a966b"),
Package () {
Package () {"led-0", "LED0"},
Package () {"led-1", "LED1"},
}
})
/*
* For more information about these bindings see:
* Documentation/devicetree/bindings/leds/common.yaml,
* Documentation/devicetree/bindings/leds/leds-gpio.yaml and
* Documentation/firmware-guide/acpi/gpio-properties.rst.
*/
Name (LED0, Package () {
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () {"label", "green"},
Package () {"default-state", "off"},
Package () {"gpios", Package () {^LEDS, 0, 0, 0}},
Package () {"retain-state-suspended", 1},
}
})
Name (LED1, Package () {
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () {"label", "red"},
Package () {"default-state", "off"},
Package () {"gpios", Package () {^LEDS, 0, 1, 0}},
Package () {"retain-state-suspended", 1},
}
})
}
Look like my leds_test.aml is loaded. This is my /sys/kernel/debug/gpio:
root@:~# cat /sys/kernel/debug/gpio
gpiochip0: GPIOs 0-191, parent: pci/0000:00:0c.0, 0000:00:0c.0:
gpio-47 ( |? ) out hi
gpio-71 ( |shutdown ) out hi
gpio-77 ( |sd_cd ) in hi IRQ
gpio-96 ( |ACPI:OpRegion ) out hi
gpio-110 ( |cs ) out hi
gpio-111 ( |cs ) out hi
gpio-112 ( |cs ) out lo
gpio-113 ( |cs ) out lo
gpio-184 ( |device-wakeup ) out lo
gpio-185 ( |host-wakeup ) in lo IRQ
root@:~# dmesg | grep ACPI
[ 0.002615] ACPI: Early table checksum verification disabled
[ 0.002631] ACPI: RSDP 0x00000000000E4500 000024 (v02 U-BOOT)
[ 0.002655] ACPI: XSDT 0x00000000000E45E0 00004C (v01 U-BOOT U-BOOTBL 20200909 INTL 00000000)
[ 0.002688] ACPI: FACP 0x00000000000E5310 0000F4 (v06 U-BOOT U-BOOTBL 20200909 INTL 00000000)
[ 0.002724] ACPI: DSDT 0x00000000000E4780 000A8A (v02 U-BOOT U-BOOTBL 00010000 INTL 20190215)
[ 0.002749] ACPI: APIC 0x00000000000E5410 000048 (v04 U-BOOT U-BOOTBL 20200909 INTL 00000000)
[ 0.002772] ACPI: MCFG 0x00000000000E5460 00003C (v01 U-BOOT U-BOOTBL 20200909 INTL 00000000)
[ 0.002794] ACPI: CSRT 0x00000000000E54A0 000058 (v00 U-BOOT U-BOOTBL 20200909 INTL 00000000)
[ 0.002817] ACPI: SPCR 0x00000000000E5500 000050 (v02 U-BOOT U-BOOTBL 20200909 INTL 00000000)
[ 0.002866] ACPI: Local APIC address 0xfee00000
[ 0.035260] ACPI: no legacy devices present
[ 0.035266] ACPI: probing for VGA not safe
[ 0.035281] ACPI: Local APIC address 0xfee00000
[ 0.035303] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
[ 0.035315] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
[ 0.035338] ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
[ 0.035385] Using ACPI (MADT) for SMP configuration information
[ 0.035400] ACPI: SPCR: console: uart,mmio,0xff010180
[ 1.158446] ACPI: Core revision 20191018
[ 1.182930] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[ 1.182938] ACPI: bus type PCI registered
[ 1.215373] ACPI: Added _OSI(Module Device)
[ 1.215771] ACPI: Added _OSI(Processor Device)
[ 1.215778] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 1.215784] ACPI: Added _OSI(Processor Aggregator Device)
[ 1.215793] ACPI: Added _OSI(Linux-Dell-Video)
[ 1.215801] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[ 1.215808] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
[ 1.220700] ACPI: 1 ACPI AML tables successfully acquired and loaded
[ 1.222647] ACPI: Interpreter enabled
[ 1.222705] ACPI: (supports S0)
[ 1.222740] ACPI: Using IOAPIC for interrupt routing
[ 1.222853] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 1.236360] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 1.266154] ACPI: bus type USB registered
[ 2.126336] pnp: PnP ACPI init
[ 2.126853] pnp 00:00: Plug and Play ACPI device, IDs PNP0b00 (active)
[ 2.127373] system 00:01: Plug and Play ACPI device, IDs PNP0c02 (active)
[ 2.128692] pnp: PnP ACPI: found 2 devices
[ 3.028011] ACPI: Host-directed Dynamic ACPI Table Load:
[ 3.028045] ACPI: SSDT 0xFFFF8B1279103A80 0000A6 (v05 SPIDEV 00000001 INTL 20190215)
[ 3.059576] ACPI: Host-directed Dynamic ACPI Table Load:
[ 3.059611] ACPI: SSDT 0xFFFF8B12792C4C00 00016D (v05 LEDS 00000001 INTL 20190215)
[ 3.112334] ACPI: Host-directed Dynamic ACPI Table Load:
[ 3.112367] ACPI: SSDT 0xFFFF8B12793D6B00 0000E5 (v05 i2c 00000001 INTL 20190215)
But I have not got my LED on,and also I ensure CONFIG_LEDS_GPIO=y and CONFIG_LEDS_CLASS=y in my kernel configuration and built kernel.
1 answers
solution1
0 ACCPTED 2020-08-27 07:14:59
Follow this leds.asli and try to create test example that is work now.
example:
Device (DEV)
{
Name (_HID, "PRP0001")
Name (_DDN, "GPIO LEDs device")
Name (_CRS, ResourceTemplate()
{
GpioIo (Shared, PullNone, 0x0000, 0x0000,
IoRestrictionOutputOnly, "\\_SB.PCI0.GPI0",
0x00, ResourceConsumer,,){12,13}
})
Name (_DSD, Package () {
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () { "compatible", Package() { "gpio-leds" } },
},
ToUUID("dbb8e3e6-5886-4ba6-8795-1319f52a966b"),
Package () {
Package () {"led-0", "LED0"},
Package () {"led-1", "LED1"},
}
})
/*
* For more information about these bindings see:
* Documentation/devicetree/bindings/leds/common.yaml,
* Documentation/devicetree/bindings/leds/leds-gpio.yaml and
* Documentation/firmware-guide/acpi/gpio-properties.rst.
*/
Name (LED0, Package () {
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () {"label", "green"},
Package () {"default-state", "off"},
Package () {"gpios", Package () {^LEDS, 0, 0, 0}},
Package () {"retain-state-suspended", 1},
}
})
Name (LED1, Package () {
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () {"label", "red"},
Package () {"default-state", "off"},
Package () {"gpios", Package () {^LEDS, 0, 1, 0}},
Package () {"retain-state-suspended", 1},
}
})
}
/sys/kernel/debug/gpio:
root@:~# cat /sys/kernel/debug/gpio
gpiochip0: GPIOs 0-191, parent: pci/0000:00:0c.0, 0000:00:0c.0:
gpio-12 ( |green ) out lo
gpio-13 ( |red ) out lo
gpio-71 ( |shutdown ) out hi
gpio-77 ( |sd_cd ) in hi IRQ
gpio-96 ( |ACPI:OpRegion ) out hi
gpio-110 ( |cs ) out hi
gpio-111 ( |cs ) out hi
gpio-112 ( |cs ) out lo
gpio-113 ( |cs ) out lo
gpio-184 ( |device-wakeup ) out lo
gpio-185 ( |host-wakeup ) in lo IRQ
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.
Related Question
Need “hello world” for writing to Intel Edison gpio in C
Intel chipset - GPIO programming
How to configure ACPI *.asl for a virtual mdio-gpio device connected to a I2C gpio expander
Control Gumstix Overo GPIO
GPIO control in while true:
Python, RPi and GPIO - control engine
C programming to control GPIO LED
Using GPIO buttons to control Raspbmc
Python rpi GPIO output control based on GPIO input and time of day
python code to control GPIO at specific times
Related Tags