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Wolfram Sang 7828b7bbbf gpio: add sloppy logic analyzer using polling 
This is a sloppy logic analyzer using GPIOs. It comes with a script to
isolate a CPU for polling. While this is definitely not a production
level analyzer, it can be a helpful first view when remote debugging.
Read the documentation for details.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240620094159.6785-2-wsa+renesas@sang-engineering.com
[Bartosz: moved the Kconfig entry into a different category]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-07-01 10:54:11 +02:00
..
gpio-74x164.c
gpio: 74x164: Enable output pins after registers are reset
2024-03-01 08:23:08 +01:00
gpio-74xx-mmio.c
gpio: 74xx-mmio: remove unneeded platform_set_drvdata() call
2023-07-29 16:03:17 +02:00
gpio-104-dio-48e.c
gpio: 104-dio-48e: Add Counter/Timer support
2023-07-27 09:37:33 +02:00
gpio-104-idi-48.c
gpio: 104-idi-48: Enable use_raw_spinlock for idi48_regmap_config
2023-04-11 21:08:31 +02:00
gpio-104-idio-16.c
gpio: 104-idio-16: Migrate to the regmap API
2023-08-11 14:23:29 +02:00
gpio-adnp.c
gpio: Switch i2c drivers back to use .probe()
2023-05-23 10:09:11 +02:00
gpio-adp5520.c
…
gpio-aggregator.c
gpio: aggregator: Set up a parser of delay line parameters
2023-06-16 11:02:07 +02:00
gpio-altera-a10sr.c
gpio: altera-a10sr: remove redundant of_match_ptr
2023-08-03 15:58:45 +02:00
gpio-altera.c
gpio: altera: Convert to platform remove callback returning void
2023-10-02 08:53:57 +02:00
gpio-amd8111.c
gpio: amd8111: Convert PCIBIOS_* return codes to errnos
2024-05-30 11:20:53 +02:00
gpio-amd-fch.c
…
gpio-amdpt.c
gpio: amdpt: Convert to platform remove callback returning void
2023-10-02 08:54:09 +02:00
gpio-arizona.c
gpio: arizona: Remove unused header(s)
2022-10-19 17:03:55 +03:00
gpio-aspeed-sgpio.c
gpio: aspeed-sgpio: Convert to immutable irq_chip
2023-03-10 16:17:20 +01:00
gpio-aspeed.c
treewide: rename pinctrl_gpio_set_config_new()
2023-11-04 10:23:22 +01:00
gpio-ath79.c
gpio: ath79: convert to dynamic GPIO base allocation
2024-06-26 10:39:08 +02:00
gpio-bcm-kona.c
gpio: bcm-kona: Drop unused pdev member in private data structure
2023-07-19 13:26:22 +02:00
gpio-bd9571mwv.c
…
gpio-bd71815.c
…
gpio-bd71828.c
gpio: Get rid of duplicate of_node assignment in the drivers
2021-12-17 17:39:35 +01:00
gpio-brcmstb.c
gpio: brcmstb: add support for gpio-ranges
2024-04-26 09:32:54 +02:00
gpio-bt8xx.c
…
gpio-cadence.c
gpio: cadence: Convert to platform remove callback returning void
2023-10-02 08:54:26 +02:00
gpio-clps711x.c
gpio: clps711x: remove redundant of_match_ptr()
2023-08-03 15:58:46 +02:00
gpio-creg-snps.c
gpio: Explicitly include correct DT includes
2023-07-19 13:24:01 +02:00
gpio-cros-ec.c
gpio: cros-ec: provide ID table for avoiding fallback match
2024-04-02 10:58:21 +02:00
gpio-crystalcove.c
gpio: crystalcove: Use -ENOTSUPP consistently
2024-04-05 20:12:39 +03:00
gpio-cs5535.c
…
gpio-da9052.c
gpio: da9052: Remove unused header(s)
2022-10-19 17:03:55 +03:00
gpio-da9055.c
…
gpio-davinci.c
gpio: Use device_get_match_data()
2023-10-09 09:08:08 +02:00
gpio-dln2.c
gpio: dln2: Convert to platform remove callback returning void
2023-10-02 08:54:31 +02:00
gpio-ds4520.c
gpio: ds4520: Add ADI DS4520 GPIO Expander Support
2023-07-29 15:56:33 +02:00
gpio-dwapb.c
gpio: dwapb: Use generic request, free and set_config
2024-01-02 14:16:17 +01:00
gpio-eic-sprd.c
Linux 6.8-rc4
2024-02-12 10:12:41 +01:00
gpio-elkhartlake.c
gpio: elkhartlake: reuse pm_ops from Intel Tangier driver
2023-11-13 17:59:48 +02:00
gpio-em.c
pinctrl: em: drop the wrapper around pinctrl_gpio_request()
2023-11-04 10:23:23 +01:00
gpio-en7523.c
gpio: EN7523: fix kernel-doc warnings
2024-01-15 23:15:35 +01:00
gpio-ep93xx.c
gpio: ep93xx: remove unused variable
2023-01-27 14:05:38 +01:00
gpio-exar.c
gpio: exar: remove unneeded platform_set_drvdata() call
2023-07-29 16:04:38 +02:00
gpio-f7188x.c
gpio-f7188x: fix base values conflicts with other gpio pins
2023-09-11 09:03:44 +02:00
gpio-ftgpio010.c
gpio: ftgpio010: Convert to platform remove callback returning void
2023-10-02 08:54:36 +02:00
gpio-fxl6408.c
gpio: fx6408: Convert to use maple tree register cache
2023-10-02 08:58:01 +02:00
gpio-ge.c
gpio: ge: Replace GPLv2 boilerplate with SPDX
2023-07-27 09:33:07 +02:00
gpio-gpio-mm.c
gpio: gpio-mm: Migrate to regmap API
2023-01-30 15:55:28 +01:00
gpio-graniterapids.c
gpio: Add Intel Granite Rapids-D vGPIO driver
2024-04-25 14:57:28 +03:00
gpio-grgpio.c
gpio: grgpio: Convert to platform remove callback returning void
2023-10-02 08:54:41 +02:00
gpio-gw-pld.c
gpio: Switch i2c drivers back to use .probe()
2023-05-23 10:09:11 +02:00
gpio-hisi.c
gpio: hisi: Fix format specifier
2023-10-13 08:39:30 +02:00
gpio-hlwd.c
gpio: Explicitly include correct DT includes
2023-07-19 13:24:01 +02:00
gpio-htc-egpio.c
…
gpio-i8255.c
gpio: i8255: Remove unused legacy interface
2023-01-30 15:55:28 +01:00
gpio-i8255.h
gpio: i8255: Remove unused legacy interface
2023-01-30 15:55:28 +01:00
gpio-ich.c
gpio: ich: Use devm_gpiochip_add_data() to simplify remove path
2023-03-09 16:08:39 +02:00
gpio-idio-16.c
gpio: idio-16: Remove unused legacy interface
2023-08-11 14:23:32 +02:00
gpio-idio-16.h
gpio: idio-16: Remove unused legacy interface
2023-08-11 14:23:32 +02:00
gpio-idt3243x.c
gpio: idt3243x: Convert to immutable irq_chip
2023-03-10 16:17:30 +01:00
gpio-imx-scu.c
gpio: imx-scu: Use ARRAY_SIZE for array length
2023-08-11 16:20:02 +02:00
gpio-it87.c
…
gpio-ixp4xx.c
gpio: ixp4xx: Handle clock output on pin 14 and 15
2023-12-01 10:48:32 +01:00
gpio-janz-ttl.c
…
gpio-kempld.c
…
gpio-latch.c
gpio: Add gpio latch driver
2022-10-26 14:52:01 +02:00
gpio-ljca.c
gpio: update Intel LJCA USB GPIO driver
2023-10-11 11:33:38 +02:00
gpio-logicvc.c
gpio: logicvc: remove unneeded platform_set_drvdata() call
2023-07-29 16:05:50 +02:00
gpio-loongson1.c
gpio: loongson1: Add DT support
2023-03-23 14:31:18 +01:00
gpio-loongson-64bit.c
gpio: loongson: add more gpio chip support
2023-09-27 09:06:50 +02:00
gpio-loongson.c
…
gpio-lp873x.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_319.RULE
2022-06-10 14:51:36 +02:00
gpio-lp3943.c
gpio: lp3943: remove unneeded platform_set_drvdata() call
2023-08-01 21:14:48 +02:00
gpio-lp87565.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_319.RULE
2022-06-10 14:51:36 +02:00
gpio-lpc18xx.c
gpio: lpc18xx: Convert to platform remove callback returning void
2023-10-02 08:54:50 +02:00
gpio-lpc32xx.c
gpio: lpc32xx: fix module autoloading
2024-04-12 21:30:58 +02:00
gpio-madera.c
…
gpio-max730x.c
gpio: max730x: don't use kernel-doc marker for regular comment
2023-12-07 09:24:08 +01:00
gpio-max732x.c
gpio: max732x: remove redundant CONFIG_OF and of_match_ptr()
2023-08-03 15:56:30 +02:00
gpio-max3191x.c
gpio: max3191x: remove redundant of_match_ptr()
2023-08-03 15:58:50 +02:00
gpio-max7300.c
gpio: Switch i2c drivers back to use .probe()
2023-05-23 10:09:11 +02:00
gpio-max7301.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
gpio-max77620.c
gpio: max77620: remove unneeded platform_set_drvdata() call
2023-08-01 21:15:23 +02:00
gpio-max77650.c
…
gpio-mb86s7x.c
gpio: mb86s7x: Convert to platform remove callback returning void
2023-10-02 08:54:55 +02:00
gpio-mc33880.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
gpio-menz127.c
gpio: use raw spinlock for gpio chip shadowed data
2022-04-25 12:10:02 +02:00
gpio-merrifield.c
gpio: merrifield: Utilise temporary variable for struct device
2023-03-06 17:10:46 +02:00
gpio-ml-ioh.c
gpio: ml-ioh: Convert to use managed functions pcim* and devm_*
2022-05-20 19:20:35 +02:00
gpio-mlxbf2.c
gpio: mlxbf2: Convert to immutable irq_chip
2023-03-10 16:17:32 +01:00
gpio-mlxbf3.c
gpio: mlxbf3: add an error code check in mlxbf3_gpio_probe
2024-01-15 11:11:29 +01:00
gpio-mlxbf.c
…
gpio-mm-lantiq.c
gpio: mm-lantiq: Convert to platform remove callback returning void
2023-10-02 08:55:00 +02:00
gpio-mmio.c
gpio: mmio: Clean up headers
2023-12-18 13:43:06 +01:00
gpio-mockup.c
gpio: mockup: initialize a managed pointer in place
2023-11-20 14:24:50 +01:00
gpio-moxtet.c
…
gpio-mpc8xxx.c
gpio: mpc8xxx: Convert to platform remove callback returning void
2023-10-02 08:55:09 +02:00
gpio-mpc5200.c
gpio: mpc5200: Convert to platform remove callback returning void
2023-10-02 08:55:04 +02:00
gpio-msc313.c
gpio: Explicitly include correct DT includes
2023-07-19 13:24:01 +02:00
gpio-mt7621.c
gpio updates for v6.1-rc1
2022-10-08 09:46:29 -07:00
gpio-mvebu.c
gpio: mvebu: Make use of devm_pwmchip_alloc() function
2024-02-22 14:39:28 +01:00
gpio-mxc.c
gpio: mxc: Use helper function devm_clk_get_optional_enabled()
2023-08-21 14:11:16 +02:00
gpio-mxs.c
gpio: mxs: fix Wvoid-pointer-to-enum-cast warning
2023-08-11 16:21:46 +02:00
gpio-nomadik.c
drivers/gpio/nomadik: move dummy nmk_gpio_dbg_show_one() to header
2024-03-12 12:53:35 +01:00
gpio-npcm-sgpio.c
gpio: nuvoton: Fix sgpio irq handle error
2024-05-07 09:44:33 +02:00
gpio-octeon.c
…
gpio-omap.c
OMAP/gpio: drop MPUIO static base
2023-10-04 11:37:25 +02:00
gpio-palmas.c
gpio: palmas: remove unnecessary call to platform_set_drvdata()
2023-08-01 21:22:38 +02:00
gpio-pca953x.c
gpio: pca953x: Add support for TI TCA9535 variant
2024-06-03 10:24:09 +02:00
gpio-pca9570.c
gpio: pca9570: fix kerneldoc
2023-08-21 10:39:58 +02:00
gpio-pcf857x.c
gpio: pcf857x: Extend match data support for OF tables
2023-08-22 11:41:17 +02:00
gpio-pch.c
gpio: pch: Change PCI device macros
2022-06-21 18:01:11 +03:00
gpio-pci-idio-16.c
gpio: pci-idio-16: Migrate to the regmap API
2023-08-11 14:23:31 +02:00
gpio-pcie-idio-24.c
gpio: pcie-idio-24: Use -ENOTSUPP consistently
2024-04-12 21:36:18 +02:00
gpio-pisosr.c
gpio: pisosr: Use devm_gpiochip_add_data() to simplify remove path
2023-07-20 17:22:10 +02:00
gpio-pl061.c
gpio: pl061: Add missing header(s)
2022-10-24 12:29:26 +03:00
gpio-pmic-eic-sprd.c
gpio: pmic-eic-sprd: Configure the bit corresponding to the EIC through offset
2024-01-03 09:50:47 +01:00
gpio-pxa.c
treewide: rename pinctrl_gpio_direction_output_new()
2023-11-04 10:23:22 +01:00
gpio-raspberrypi-exp.c
gpio: raspberrypi-exp: remove redundant of_match_ptr()
2023-08-03 15:58:52 +02:00
gpio-rc5t583.c
gpio: rc5t583: remove unneeded call to platform_set_drvdata()
2023-08-01 21:26:48 +02:00
gpio-rcar.c
treewide: rename pinctrl_gpio_free_new()
2023-11-04 10:23:21 +01:00
gpio-rda.c
gpio: rda: Convert to immutable irq_chip
2023-03-23 14:31:18 +01:00
gpio-rdc321x.c
gpio: rdc321x: Convert PCIBIOS_* return codes to errnos
2024-05-30 11:21:05 +02:00
gpio-realtek-otto.c
gpio: realtek-otto: switch to 32-bit I/O
2022-08-31 17:46:30 +02:00
gpio-reg.c
gpio: reg: Add missing header(s)
2023-03-06 12:33:02 +02:00
gpio-regmap.c
gpio: regmap: Use -ENOTSUPP consistently
2024-04-12 21:36:40 +02:00
gpio-rockchip.c
treewide: rename pinctrl_gpio_direction_output_new()
2023-11-04 10:23:22 +01:00
gpio-rtd.c
gpio: rtd: Fix signedness bug in probe
2024-01-15 11:07:46 +01:00
gpio-sa1100.c
gpio: sa1100: include <mach/generic.h>
2023-05-17 11:56:24 +02:00
gpio-sama5d2-piobu.c
gpio: sama5d2-piobu: remove unneeded call to platform_set_drvdata()
2023-08-01 21:27:38 +02:00
gpio-sch311x.c
gpio: sch311x: Use devm_gpiochip_add_data() to simplify remove path
2023-05-17 11:52:14 +02:00
gpio-sch.c
gpio: sch: Utilise temporary variable for struct device
2024-04-15 16:12:18 +03:00
gpio-sifive.c
gpio: sifive: remove unneeded call to platform_set_drvdata()
2023-11-15 15:39:40 +01:00
gpio-sim.c
gpio: sim: use devm_mutex_init()
2024-06-11 21:38:42 +02:00
gpio-siox.c
gpio: siox: Convert to immutable irq_chip
2023-03-23 14:31:18 +01:00
gpio-sl28cpld.c
gpio: sl28cpld: Replace irqchip mask_invert with unmask_base
2022-11-15 15:41:45 +01:00
gpio-sloppy-logic-analyzer.c
gpio: add sloppy logic analyzer using polling
2024-07-01 10:54:11 +02:00
gpio-sodaville.c
gpio: Bulk conversion to generic_handle_domain_irq()
2021-08-12 11:39:38 +01:00
gpio-spear-spics.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2)
2022-06-10 14:51:35 +02:00
gpio-sprd.c
gpio: Explicitly include correct DT includes
2023-07-19 13:24:01 +02:00
gpio-stmpe.c
gpio: stmpe: use gpiochip_dup_line_label()
2023-12-08 09:26:28 +01:00
gpio-stp-xway.c
gpio: Explicitly include correct DT includes
2023-07-19 13:24:01 +02:00
gpio-syscon.c
gpio: syscon: do not report bogus error
2024-05-29 13:18:12 +02:00
gpio-tangier.c
gpio: tangier: Use correct type for the IRQ chip data
2024-04-12 23:41:05 +03:00
gpio-tangier.h
gpio: tangier: unexport suspend/resume handles
2023-11-13 17:59:48 +02:00
gpio-tb10x.c
gpio updates for v6.7-rc1
2023-10-31 17:21:54 -10:00
gpio-tc3589x.c
gpio: tc3589x: Make irqchip immutable
2022-10-03 20:56:46 +02:00
gpio-tegra186.c
gpio: tegra186: Fix tegra186_gpio_is_accessible() check
2024-04-24 15:31:41 +02:00
gpio-tegra.c
pinctrl: tegra: drop the wrapper around pinctrl_gpio_request()
2023-11-04 10:23:23 +01:00
gpio-thunderx.c
gpio: thunderx: Convert to immutable irq_chip
2023-03-23 14:31:18 +01:00
gpio-timberdale.c
gpio: timberdale: Fix potential deadlock on &tgpio->lock
2023-09-27 08:51:28 +02:00
gpio-tn48m.c
gpio: Add Delta TN48M CPLD GPIO driver
2022-02-25 09:59:35 +01:00
gpio-tpic2810.c
gpio: Switch i2c drivers back to use .probe()
2023-05-23 10:09:11 +02:00
gpio-tps6586x.c
gpio: Explicitly include correct DT includes
2023-07-19 13:24:01 +02:00
gpio-tps65086.c
gpio: tps65086: Use devm_gpiochip_add_data() to simplify remove path
2023-05-17 11:40:40 +02:00
gpio-tps65218.c
gpio: tps65218: remove redundant of_match_ptr()
2023-08-03 15:55:34 +02:00
gpio-tps65219.c
gpio: tps65219: don't use CONFIG_DEBUG_GPIO
2023-12-27 15:56:48 +01:00
gpio-tps65910.c
gpio: Explicitly include correct DT includes
2023-07-19 13:24:01 +02:00
gpio-tps65912.c
…
gpio-tps68470.c
gpio: tps68470: Make tps68470_gpio_output() always set the initial value
2023-07-19 13:22:13 +02:00
gpio-tqmx86.c
gpio: tqmx86: remove unneeded call to platform_set_drvdata()
2023-08-03 15:47:58 +02:00
gpio-ts4800.c
gpio: Explicitly include correct DT includes
2023-07-19 13:24:01 +02:00
gpio-ts4900.c
gpio: Explicitly include correct DT includes
2023-07-19 13:24:01 +02:00
gpio-ts5500.c
gpio: ts5500: Convert to platform remove callback returning void
2023-10-02 08:55:27 +02:00
gpio-twl4030.c
This removes all usage of global GPIO numbers from
2023-05-31 17:01:34 +02:00
gpio-twl6040.c
gpio: Propagate firmware node from a parent device
2021-12-17 17:50:46 +01:00
gpio-uniphier.c
gpio: uniphier: Convert to platform remove callback returning void
2023-10-02 08:55:32 +02:00
gpio-vf610.c
treewide: rename pinctrl_gpio_direction_output_new()
2023-11-04 10:23:22 +01:00
gpio-viperboard.c
gpio: viperboard: remove platform_set_drvdata() call in probe
2021-08-31 11:29:28 +02:00
gpio-virtio.c
gpio: virtio: drop owner assignment
2024-05-22 08:31:17 -04:00
gpio-visconti.c
gpio: visconti: Convert to immutable irq_chip
2023-03-23 14:31:18 +01:00
gpio-vx855.c
gpio: vx855: remove unneeded call to platform_set_drvdata()
2023-08-03 15:48:15 +02:00
gpio-wcd934x.c
gpio: Explicitly include correct DT includes
2023-07-19 13:24:01 +02:00
gpio-wcove.c
gpio: wcove: Use -ENOTSUPP consistently
2024-04-05 20:12:03 +03:00
gpio-winbond.c
gpio: winbond: Fix error code in winbond_gpio_get()
2022-06-23 16:29:55 +02:00
gpio-wm831x.c
gpio: wm831x: use gpiochip_dup_line_label()
2023-12-08 09:26:20 +01:00
gpio-wm8350.c
gpio: wm8350: Remove unused header(s)
2022-10-24 12:29:41 +03:00
gpio-wm8994.c
gpio: wm8994: use gpiochip_dup_line_label()
2023-12-08 09:26:25 +01:00
gpio-ws16c48.c
gpio updates for v6.6
2023-08-29 10:21:56 -07:00
gpio-xgene-sb.c
gpio: xgene-sb: Convert to platform remove callback returning void
2023-10-02 08:55:38 +02:00
gpio-xgene.c
…
gpio-xgs-iproc.c
gpio: xgs-iproc: Convert to platform remove callback returning void
2023-10-02 08:55:42 +02:00
gpio-xilinx.c
gpio: xilinx: remove excess kernel doc
2023-12-18 09:56:21 +01:00
gpio-xlp.c
gpio: xlp: Convert to immutable irq_chip
2023-03-23 14:31:19 +01:00
gpio-xra1403.c
gpio: xra1403: remove redundant of_match_ptr()
2023-08-03 15:58:54 +02:00
gpio-xtensa.c
…
gpio-zevio.c
gpio: zevio: remove unneeded call to platform_set_drvdata()
2023-08-03 15:48:27 +02:00
gpio-zynq.c
gpio: zynq: Convert to platform remove callback returning void
2023-10-02 08:55:50 +02:00
gpio-zynqmp-modepin.c
gpio: modepin: Add driver support for modepin GPIO controller
2021-09-23 10:09:58 +02:00
gpiolib-acpi.c
gpiolib: put gpio_suffixes in a single compilation unit
2024-06-14 09:14:58 +02:00
gpiolib-acpi.h
gpio: acpi: Make acpi_gpio_count() take firmware node as a parameter
2024-03-01 09:08:34 +01:00
gpiolib-cdev.c
gpiolib: cdev: Cleanup kfifo_out() error handling
2024-05-30 11:29:10 +02:00
gpiolib-cdev.h
…
gpiolib-devres.c
gpiolib: Pass consumer device through to core in devm_fwnode_gpiod_get_index()
2024-02-27 14:17:38 +01:00
gpiolib-legacy.c
gpiolib: Get rid of never false gpio_is_valid() calls
2024-04-17 22:46:44 +02:00
gpiolib-of.c
gpiolib: put gpio_suffixes in a single compilation unit
2024-06-14 09:14:58 +02:00
gpiolib-of.h
gpio: of: Make of_gpio_get_count() take firmware node as a parameter
2024-03-01 09:07:21 +01:00
gpiolib-swnode.c
gpio: swnode: Add ability to specify native chip selects for SPI
2024-04-16 20:00:27 +09:00
gpiolib-swnode.h
gpiolib: add support for software nodes
2022-11-15 11:21:43 +01:00
gpiolib-sysfs.c
gpiolib: Get rid of never false gpio_is_valid() calls
2024-04-17 22:46:44 +02:00
gpiolib-sysfs.h
gpiolib: revert the attempt to protect the GPIO device list with an rwsem
2024-01-17 09:52:37 +01:00
gpiolib.c
gpiolib: put gpio_suffixes in a single compilation unit
2024-06-14 09:14:58 +02:00
gpiolib.h
gpiolib: put gpio_suffixes in a single compilation unit
2024-06-14 09:14:58 +02:00
Kconfig
gpio: add sloppy logic analyzer using polling
2024-07-01 10:54:11 +02:00
Makefile
gpio: add sloppy logic analyzer using polling
2024-07-01 10:54:11 +02:00
TODO
gpiolib: split of_mm_gpio_chip out of linux/of_gpio.h
2023-03-06 12:33:01 +02:00