From cf9610f9116d55c5a66ef9f1faecacabd93a9322 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 24 Aug 2026 08:46:03 -0700 Subject: Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ... --- net/rfkill/rfkill-gpio.c | 220 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 220 insertions(+) create mode 100644 net/rfkill/rfkill-gpio.c (limited to 'net/rfkill/rfkill-gpio.c') diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c new file mode 100644 index 000000000..9c5b695db --- /dev/null +++ b/net/rfkill/rfkill-gpio.c @@ -0,0 +1,220 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2011, NVIDIA Corporation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct rfkill_gpio_data { + const char *name; + enum rfkill_type type; + struct gpio_desc *reset_gpio; + struct gpio_desc *shutdown_gpio; + + struct rfkill *rfkill_dev; + struct clk *clk; + + bool clk_enabled; +}; + +static int rfkill_gpio_set_power(void *data, bool blocked) +{ + struct rfkill_gpio_data *rfkill = data; + + if (!blocked && !IS_ERR(rfkill->clk) && !rfkill->clk_enabled) { + int ret = clk_enable(rfkill->clk); + + if (ret) + return ret; + } + + gpiod_set_value_cansleep(rfkill->shutdown_gpio, !blocked); + gpiod_set_value_cansleep(rfkill->reset_gpio, !blocked); + + if (blocked && !IS_ERR(rfkill->clk) && rfkill->clk_enabled) + clk_disable(rfkill->clk); + + rfkill->clk_enabled = !blocked; + + return 0; +} + +static const struct rfkill_ops rfkill_gpio_ops = { + .set_block = rfkill_gpio_set_power, +}; + +static const struct acpi_gpio_params reset_gpios = { 0, 0, false }; +static const struct acpi_gpio_params shutdown_gpios = { 1, 0, false }; + +static const struct acpi_gpio_mapping acpi_rfkill_default_gpios[] = { + { "reset-gpios", &reset_gpios, 1 }, + { "shutdown-gpios", &shutdown_gpios, 1 }, + { }, +}; + +static int rfkill_gpio_acpi_probe(struct device *dev, + struct rfkill_gpio_data *rfkill) +{ + const struct acpi_device_id *id; + + id = acpi_match_device(dev->driver->acpi_match_table, dev); + if (!id) + return -ENODEV; + + rfkill->type = (unsigned)id->driver_data; + + return devm_acpi_dev_add_driver_gpios(dev, acpi_rfkill_default_gpios); +} + +/* List of DMI matches for devices on which rfkill-gpio should not load, + * to avoid firmware bugs. + */ +static const struct dmi_system_id rfkill_gpio_deny_table[] = { + { + /* Lenovo Yoga Tab 3 Pro YT3-X90, bogus "BCM4752" device in DSDT */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"), + }, + }, + { } +}; + +static int rfkill_gpio_probe(struct platform_device *pdev) +{ + struct rfkill_gpio_data *rfkill; + const char *type_name = NULL; + const char *name_property; + const char *type_property; + struct gpio_desc *gpio; + int ret; + + if (dmi_check_system(rfkill_gpio_deny_table)) + return -ENODEV; + + rfkill = devm_kzalloc(&pdev->dev, sizeof(*rfkill), GFP_KERNEL); + if (!rfkill) + return -ENOMEM; + + if (dev_of_node(&pdev->dev)) { + name_property = "label"; + type_property = "radio-type"; + } else { + name_property = "name"; + type_property = "type"; + } + device_property_read_string(&pdev->dev, name_property, &rfkill->name); + device_property_read_string(&pdev->dev, type_property, &type_name); + + if (!rfkill->name) + rfkill->name = dev_name(&pdev->dev); + + rfkill->type = rfkill_find_type(type_name); + + if (ACPI_HANDLE(&pdev->dev)) { + ret = rfkill_gpio_acpi_probe(&pdev->dev, rfkill); + if (ret) + return ret; + } + + rfkill->clk = devm_clk_get(&pdev->dev, NULL); + + gpio = devm_gpiod_get_optional(&pdev->dev, "reset", GPIOD_ASIS); + if (IS_ERR(gpio)) + return PTR_ERR(gpio); + + rfkill->reset_gpio = gpio; + + gpio = devm_gpiod_get_optional(&pdev->dev, "shutdown", GPIOD_ASIS); + if (IS_ERR(gpio)) + return PTR_ERR(gpio); + + rfkill->shutdown_gpio = gpio; + + /* Make sure at-least one GPIO is defined for this instance */ + if (!rfkill->reset_gpio && !rfkill->shutdown_gpio) { + dev_err(&pdev->dev, "invalid platform data\n"); + return -EINVAL; + } + + ret = gpiod_direction_output(rfkill->reset_gpio, true); + if (ret) + return ret; + + ret = gpiod_direction_output(rfkill->shutdown_gpio, true); + if (ret) + return ret; + + rfkill->rfkill_dev = rfkill_alloc(rfkill->name, &pdev->dev, + rfkill->type, &rfkill_gpio_ops, + rfkill); + if (!rfkill->rfkill_dev) + return -ENOMEM; + + if (device_property_present(&pdev->dev, "default-blocked")) + rfkill_init_sw_state(rfkill->rfkill_dev, true); + + ret = rfkill_register(rfkill->rfkill_dev); + if (ret < 0) + goto err_destroy; + + platform_set_drvdata(pdev, rfkill); + + dev_info(&pdev->dev, "%s device registered.\n", rfkill->name); + + return 0; + +err_destroy: + rfkill_destroy(rfkill->rfkill_dev); + + return ret; +} + +static void rfkill_gpio_remove(struct platform_device *pdev) +{ + struct rfkill_gpio_data *rfkill = platform_get_drvdata(pdev); + + rfkill_unregister(rfkill->rfkill_dev); + rfkill_destroy(rfkill->rfkill_dev); +} + +#ifdef CONFIG_ACPI +static const struct acpi_device_id rfkill_acpi_match[] = { + { "BCM4752", RFKILL_TYPE_GPS }, + { "LNV4752", RFKILL_TYPE_GPS }, + { }, +}; +MODULE_DEVICE_TABLE(acpi, rfkill_acpi_match); +#endif + +static const struct of_device_id rfkill_of_match[] __maybe_unused = { + { .compatible = "rfkill-gpio", }, + { }, +}; +MODULE_DEVICE_TABLE(of, rfkill_of_match); + +static struct platform_driver rfkill_gpio_driver = { + .probe = rfkill_gpio_probe, + .remove = rfkill_gpio_remove, + .driver = { + .name = "rfkill_gpio", + .acpi_match_table = ACPI_PTR(rfkill_acpi_match), + .of_match_table = of_match_ptr(rfkill_of_match), + }, +}; + +module_platform_driver(rfkill_gpio_driver); + +MODULE_DESCRIPTION("gpio rfkill"); +MODULE_AUTHOR("NVIDIA"); +MODULE_LICENSE("GPL"); -- cgit v1.3.1