^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * 88pm860x_onkey.c - Marvell 88PM860x ONKEY driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2009-2010 Marvell International Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Haojian Zhuang <haojian.zhuang@marvell.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * This file is subject to the terms and conditions of the GNU General
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Public License. See the file "COPYING" in the main directory of this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * archive for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * This program is distributed in the hope that it will be useful,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * but WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * GNU General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * You should have received a copy of the GNU General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * along with this program; if not, write to the Free Software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/mfd/88pm860x.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define PM8607_WAKEUP 0x0b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define LONG_ONKEY_EN (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define ONKEY_STATUS (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct pm860x_onkey_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct input_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct pm860x_chip *chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct i2c_client *i2c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /* 88PM860x gives us an interrupt when ONKEY is held */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static irqreturn_t pm860x_onkey_handler(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct pm860x_onkey_info *info = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) ret &= ONKEY_STATUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) input_report_key(info->idev, KEY_POWER, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) input_sync(info->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* Enable 8-second long onkey detection */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) pm860x_set_bits(info->i2c, PM8607_WAKEUP, 3, LONG_ONKEY_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static int pm860x_onkey_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct pm860x_onkey_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int irq, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) info = devm_kzalloc(&pdev->dev, sizeof(struct pm860x_onkey_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) info->chip = chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) info->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) info->irq = irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) info->idev = devm_input_allocate_device(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (!info->idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) dev_err(chip->dev, "Failed to allocate input dev\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) info->idev->name = "88pm860x_on";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) info->idev->phys = "88pm860x_on/input0";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) info->idev->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) info->idev->dev.parent = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) info->idev->evbit[0] = BIT_MASK(EV_KEY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) info->idev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) ret = input_register_device(info->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) dev_err(chip->dev, "Can't register input device: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) pm860x_onkey_handler, IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) "onkey", info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) info->irq, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) platform_set_drvdata(pdev, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) device_init_wakeup(&pdev->dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^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) static int __maybe_unused pm860x_onkey_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) chip->wakeup_flag |= 1 << PM8607_IRQ_ONKEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int __maybe_unused pm860x_onkey_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) chip->wakeup_flag &= ~(1 << PM8607_IRQ_ONKEY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static SIMPLE_DEV_PM_OPS(pm860x_onkey_pm_ops, pm860x_onkey_suspend, pm860x_onkey_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static struct platform_driver pm860x_onkey_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .name = "88pm860x-onkey",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .pm = &pm860x_onkey_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .probe = pm860x_onkey_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) module_platform_driver(pm860x_onkey_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) MODULE_DESCRIPTION("Marvell 88PM860x ONKEY driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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