^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2014, National Instruments Corp. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Driver for NI Ettus Research USRP E3x0 Button Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static irqreturn_t e3x0_button_release_handler(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct input_dev *idev = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) input_report_key(idev, KEY_POWER, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) input_sync(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static irqreturn_t e3x0_button_press_handler(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct input_dev *idev = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) input_report_key(idev, KEY_POWER, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) pm_wakeup_event(idev->dev.parent, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) input_sync(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static int __maybe_unused e3x0_button_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) enable_irq_wake(platform_get_irq_byname(pdev, "press"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static int __maybe_unused e3x0_button_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) disable_irq_wake(platform_get_irq_byname(pdev, "press"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static SIMPLE_DEV_PM_OPS(e3x0_button_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) e3x0_button_suspend, e3x0_button_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static int e3x0_button_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int irq_press, irq_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) irq_press = platform_get_irq_byname(pdev, "press");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (irq_press < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return irq_press;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) irq_release = platform_get_irq_byname(pdev, "release");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (irq_release < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return irq_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) input = devm_input_allocate_device(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (!input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) input->name = "NI Ettus Research USRP E3x0 Button Driver";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) input->phys = "e3x0_button/input0";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) input->dev.parent = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) input_set_capability(input, EV_KEY, KEY_POWER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) error = devm_request_irq(&pdev->dev, irq_press,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) e3x0_button_press_handler, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) "e3x0-button", input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) dev_err(&pdev->dev, "Failed to request 'press' IRQ#%d: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) irq_press, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) error = devm_request_irq(&pdev->dev, irq_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) e3x0_button_release_handler, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) "e3x0-button", input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) dev_err(&pdev->dev, "Failed to request 'release' IRQ#%d: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) irq_release, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) error = input_register_device(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) dev_err(&pdev->dev, "Can't register input device: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) device_init_wakeup(&pdev->dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static const struct of_device_id e3x0_button_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) { .compatible = "ettus,e3x0-button", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) MODULE_DEVICE_TABLE(of, e3x0_button_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static struct platform_driver e3x0_button_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .name = "e3x0-button",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .of_match_table = of_match_ptr(e3x0_button_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .pm = &e3x0_button_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .probe = e3x0_button_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) module_platform_driver(e3x0_button_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) MODULE_AUTHOR("Moritz Fischer <moritz.fischer@ettus.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) MODULE_DESCRIPTION("NI Ettus Research USRP E3x0 Button driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) MODULE_ALIAS("platform:e3x0-button");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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