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ff557c272c
qemu/hw/misc
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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
..
macio hw/misc/macio: Realize IDE controller before accessing it 2024-02-15 16:58:46 +01:00
a9scu.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
allwinner-a10-ccm.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
allwinner-a10-dramc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
allwinner-cpucfg.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
allwinner-h3-ccu.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
allwinner-h3-dramc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
allwinner-h3-sysctrl.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
allwinner-r40-ccu.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
allwinner-r40-dramc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
allwinner-sid.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
allwinner-sramc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
applesmc.c Do not include "qemu/error-report.h" in headers that do not need it 2023-02-14 09:11:27 +01:00
arm11scu.c
arm_integrator_debug.c arm: Update infocenter.arm.com URLs 2021-02-11 11:50:14 +00:00
arm_l2x0.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
arm_sysctl.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
armsse-cpu-pwrctrl.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
armsse-cpuid.c hw/arm/mps2: Update old infocenter.arm.com URLs 2021-03-08 11:54:16 +00:00
armsse-mhu.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
armv7m_ras.c arm: Move M-profile RAS register block into its own device 2021-09-01 11:08:18 +01:00
aspeed_hace.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
aspeed_i3c.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
aspeed_lpc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
aspeed_peci.c hw/misc/aspeed: Add PECI controller 2022-06-30 09:21:14 +02:00
aspeed_sbc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
aspeed_scu.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
aspeed_sdmc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
aspeed_xdma.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
auxbus.c bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
avr_power.c
axp2xx.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
bcm2835_cprman.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
bcm2835_mbox.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
bcm2835_mphi.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
bcm2835_powermgt.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
bcm2835_property.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
bcm2835_rng.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
bcm2835_thermal.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
cbus.c Drop useless casts from g_malloc() & friends to pointer 2022-10-22 23:15:40 +02:00
debugexit.c
djmemc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
eccmemctl.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
edu.c system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
empty_slot.c
exynos4210_clk.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
exynos4210_pmu.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
exynos4210_rng.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
grlib_ahb_apb_pnp.c hw/misc/grlib_ahb_apb_pnp: Support 8 and 16 bit accesses 2022-08-08 23:43:11 +02:00
i2c-echo.c hw/misc/i2c-echo: add copyright/license note 2023-10-12 14:11:44 +02:00
imx6_ccm.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
imx6_src.c system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
imx6ul_ccm.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
imx7_ccm.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
imx7_gpr.c
imx7_snvs.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
imx7_src.c system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
imx25_ccm.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
imx31_ccm.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
imx_ccm.c hw: Do not include qemu/log.h if it is not necessary 2021-05-02 17:24:50 +02:00
imx_rngc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
iosb.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
iotkit-secctl.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
iotkit-sysctl.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
iotkit-sysinfo.c hw/misc/iotkit-sysinfo.c: Implement SYS_CONFIG1 and IIDR 2021-03-08 17:20:01 +00:00
ivshmem.c hw/misc: Simplify memory_region_init_ram_from_fd() calls 2024-01-05 16:20:15 +01:00
Kconfig hw/misc: Implement STM32L4x5 SYSCFG 2024-01-15 17:12:22 +00:00
lasi.c lasi: Add reset I/O ports for LASI audio and FDC 2024-02-11 13:20:23 +01:00
led.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
mac_via.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
mchp_pfsoc_dmc.c hw: Remove superfluous includes of hw/hw.h 2021-05-02 17:24:50 +02:00
mchp_pfsoc_ioscb.c hw/{misc, riscv}: pfsoc: add system controller as unimplemented 2023-01-06 10:42:55 +10:00
mchp_pfsoc_sysreg.c hw/{misc, riscv}: pfsoc: add system controller as unimplemented 2023-01-06 10:42:55 +10:00
meson.build hw/misc/xlnx-versal-crl: Build it only once 2024-01-26 11:30:49 +00:00
mips_cmgcr.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
mips_cpc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
mips_itu.c hw/misc/mips_itu: Remove MIPSITUState::saar field 2024-02-15 15:53:12 +01:00
mos6522.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
mps2-fpgaio.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
mps2-scc.c hw/misc/mps2-scc: Make changes needed for AN536 FPGA image 2024-02-15 14:32:38 +00:00
msf2-sysreg.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
mst_fpga.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
npcm7xx_clk.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
npcm7xx_gcr.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
npcm7xx_mft.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
npcm7xx_pwm.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
npcm7xx_rng.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
nrf51_rng.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
omap_clk.c
omap_gpmc.c hw/arm/omap: Drop useless casts from void * to pointer 2023-01-12 17:15:09 +00:00
omap_l4.c hw/arm/omap: Drop useless casts from void * to pointer 2023-01-12 17:15:09 +00:00
omap_sdrc.c hw/arm/omap: Drop useless casts from void * to pointer 2023-01-12 17:15:09 +00:00
omap_tap.c hw/arm/omap: Drop useless casts from void * to pointer 2023-01-12 17:15:09 +00:00
pc-testdev.c
pca9552.c misc/pca9552: Let external devices set pca9552 inputs 2024-02-23 23:24:42 +10:00
pci-testdev.c kvm: require KVM_CAP_IOEVENTFD and KVM_CAP_IOEVENTFD_ANY_LENGTH 2023-10-25 17:35:15 +02:00
pvpanic-isa.c acpi: pvpanic-isa: use AcpiDevAmlIfClass:build_dev_aml to provide device's AML 2022-06-09 19:32:49 -04:00
pvpanic-pci.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
pvpanic.c hw/misc/pvpanic: Use standard headers instead 2022-03-06 05:08:23 -05:00
sbsa_ec.c hw/misc/sbsa_ec: Declare QOM macros using OBJECT_DECLARE_SIMPLE_TYPE() 2023-01-12 17:15:09 +00:00
sifive_e_aon.c hw/misc: sifive_e_aon: Support the watchdog timer of HiFive 1 rev b. 2023-07-10 22:29:14 +10:00
sifive_e_prci.c hw: Remove superfluous includes of hw/hw.h 2021-05-02 17:24:50 +02:00
sifive_test.c hw/misc/sifive_test.c: replace exit calls with proper shutdown 2023-10-12 12:34:30 +10:00
sifive_u_otp.c hw/misc/sifive_u_otp: Remove the deprecated OTP config with '-drive if=none' 2023-01-26 13:25:07 +01:00
sifive_u_prci.c
slavio_misc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
stm32f2xx_syscfg.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
stm32f4xx_exti.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
stm32f4xx_syscfg.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
stm32l4x5_exti.c hw/misc: Implement STM32L4x5 EXTI 2024-01-15 17:12:22 +00:00
stm32l4x5_syscfg.c hw/misc: Implement STM32L4x5 SYSCFG 2024-01-15 17:12:22 +00:00
trace-events hw/misc: Implement STM32L4x5 SYSCFG 2024-01-15 17:12:22 +00:00
trace.h
tz-mpc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
tz-msc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
tz-ppc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
unimp.c
virt_ctrl.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
vmcoreinfo.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
xlnx-cfi-if.c hw/misc: Introduce the Xilinx CFI interface 2023-09-08 16:41:34 +01:00
xlnx-versal-cframe-reg.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
xlnx-versal-cfu.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
xlnx-versal-crl.c hw/misc/xlnx-versal-crl: Build it only once 2024-01-26 11:30:49 +00:00
xlnx-versal-pmc-iou-slcr.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
xlnx-versal-trng.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
xlnx-versal-xramc.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
xlnx-zynqmp-apu-ctrl.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
xlnx-zynqmp-crf.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00
zynq_slcr.c hw/misc: Constify VMState 2023-12-30 07:38:06 +11:00