OpenE2K/qemu-e2k
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ff557c272c
qemu-e2k/hw
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Glenn Miles ff557c272c misc/pca9552: Let external devices set pca9552 inputs 
Allow external devices to drive pca9552 input pins by adding
input GPIO's to the model.  This allows a device to connect
its output GPIO's to the pca9552 input GPIO's.

In order for an external device to set the state of a pca9552
pin, the pin must first be configured for high impedance (LED
is off).  If the pca9552 pin is configured to drive the pin low
(LED is on), then external input will be ignored.

Here is a table describing the logical state of a pca9552 pin
given the state being driven by the pca9552 and an external device:

                   PCA9552
                   Configured
                   State

                  | Hi-Z | Low |
            ------+------+-----+
  External   Hi-Z |  Hi  | Low |
  Device    ------+------+-----+
  State      Low  |  Low | Low |
            ------+------+-----+

Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Signed-off-by: Glenn Miles <milesg@linux.vnet.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
2024-02-23 23:24:42 +10:00
..
9pfs
acpi hw/acpi/cpu_hotplug: Include 'x86.h' instead of 'pc.h' 2024-02-20 20:34:21 +03:00
adc
alpha hw/alpha/dp264: use pci_init_nic_devices() 2024-02-02 16:23:47 +00:00
arm hw/ide: Split qdev.c into ide-bus.c and ide-dev.c 2024-02-22 12:47:40 +01:00
audio
avr
block hw/block/tc58128: Don't emit deprecation warning under qtest 2024-02-15 15:53:12 +01:00
char hw/sparc/grlib: split out the headers for each peripherals 2024-02-15 16:58:46 +01:00
core hw/sysbus: Inline and remove sysbus_add_io() 2024-02-22 12:47:40 +01:00
cpu target/arm: Move GTimer definitions to new 'gtimer.h' header 2024-01-26 11:30:49 +00:00
cris hw/net/etraxfs-eth: use qemu_configure_nic_device() 2024-02-02 16:23:47 +00:00
cxl hw/cxl: Standardize all references on CXL r3.1 and minor updates 2024-02-14 06:09:33 -05:00
display virtio-gpu-rutabaga.c: override resource_destroy method 2024-02-14 06:17:44 -05:00
dma hw/dma: Pass parent object to i8257_dma_init() 2024-02-15 16:58:46 +01:00
fsi hw/fsi: Aspeed APB2OPB & On-chip peripheral bus 2024-02-01 08:33:18 +01:00
gpio
hppa hw/hppa/Kconfig: Fix building with "configure --without-default-devices" 2024-02-21 08:16:58 +03:00
hyperv hv-balloon: use get_min_alignment() to express 32 GiB alignment 2024-02-04 17:42:03 +01:00
i2c hw/i2c/smbus_slave: Add object path on error prints 2024-02-22 12:47:40 +01:00
i386 Misc HW patch queue 2024-02-22 15:44:29 +00:00
ide hw/ide: Stop exposing internal.h to non-IDE files 2024-02-22 12:47:40 +01:00
input hw/input/pckbd: Open-code i8042_setup_a20_line() wrapper 2024-02-22 12:47:35 +01:00
intc hw/intc/grlib_irqmp: implements multicore irq 2024-02-15 16:58:46 +01:00
ipack
ipmi
isa Misc HW patch queue 2024-02-22 15:44:29 +00:00
loongarch hw/loongarch: use pci_init_nic_devices() 2024-02-02 16:23:47 +00:00
m68k hw/m68k/q800: use qemu_find_nic_info() 2024-02-02 16:23:47 +00:00
mem hw/cxl: Standardize all references on CXL r3.1 and minor updates 2024-02-14 06:09:33 -05:00
microblaze hw/microblaze: use qemu_configure_nic_device() 2024-02-02 16:23:47 +00:00
mips Misc HW patch queue 2024-02-22 15:44:29 +00:00
misc misc/pca9552: Let external devices set pca9552 inputs 2024-02-23 23:24:42 +10:00
net hw/net/tulip: add chip status register values 2024-02-11 13:20:23 +01:00
nios2
nubus
nvme
nvram hw/sysbus: Inline and remove sysbus_add_io() 2024-02-22 12:47:40 +01:00
openrisc hw/openrisc/openrisc_sim: use qemu_create_nic_device() 2024-02-02 16:23:47 +00:00
pci target/arm: fix exception syndrome for AArch32 bkpt insn 2024-02-02 18:56:32 +00:00
pci-bridge hw/cxl: Standardize all references on CXL r3.1 and minor updates 2024-02-14 06:09:33 -05:00
pci-host hw/ppc/ppc440_pcix: Move ppc440_pcix.c to hw/pci-host/ 2024-02-22 12:47:40 +01:00
pcmcia
ppc ppc/pnv: Change powernv default to powernv10 2024-02-23 23:24:42 +10:00
rdma
remote Replace "iothread lock" with "BQL" in comments 2024-01-08 10:45:43 -05:00
riscv target/riscv: SMBIOS support for RISC-V virt machine 2024-02-09 20:43:14 +10:00
rtc
rx hw/rx/rx62n: Only call qdev_get_gpio_in() when necessary 2024-02-15 16:58:46 +01:00
s390x target/arm: fix exception syndrome for AArch32 bkpt insn 2024-02-02 18:56:32 +00:00
scsi esp.c: add my copyright to the file 2024-02-13 19:37:28 +00:00
sd
sensor
sh4 sh4: correct typos 2024-02-21 08:16:30 +03:00
smbios hw/smbios: Fix port connector option validation 2024-02-14 06:09:33 -05:00
sparc hw/sparc/leon3: Fix wrong usage of DO_UPCAST macro 2024-02-22 12:47:40 +01:00
sparc64 hw/sparc64/cpu: Initialize GPIO before realizing CPU devices 2024-02-15 16:58:46 +01:00
ssi hw/ssi: Implement BCM2835 SPI Controller 2024-02-02 13:51:59 +00:00
timer hw/timer: Move HPET_INTCAP definition to "hpet.h" 2024-02-20 20:34:21 +03:00
tpm
tricore hw/tricore/testboard: Use qdev_new() instead of QOM basic API 2024-02-22 12:47:40 +01:00
ufs
usb hw/usb/ehci: Rename NB_PORTS -> EHCI_PORTS 2024-02-20 20:34:21 +03:00
vfio vfio/pci: Clear MSI-X IRQ index always 2024-01-29 08:26:25 +01:00
virtio virtio_iommu: Clear IOMMUPciBus pointer cache when system reset 2024-02-14 06:09:32 -05:00
watchdog
xen target/arm: fix exception syndrome for AArch32 bkpt insn 2024-02-02 18:56:32 +00:00
xenpv hw/xen: use qemu_create_nic_bus_devices() to instantiate Xen NICs 2024-02-02 16:23:47 +00:00
xtensa hw/xtensa/xtfpga: use qemu_create_nic_device() 2024-02-02 16:23:47 +00:00
Kconfig hw/fsi: Introduce IBM's Local bus 2024-02-01 08:13:30 +01:00
meson.build hw/fsi: Introduce IBM's Local bus 2024-02-01 08:13:30 +01:00