^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Marvell 88PM80x ONKEY driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2012 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) * Qiao Zhou <zhouqiao@marvell.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * This file is subject to the terms and conditions of the GNU General
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Public License. See the file "COPYING" in the main directory of this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * archive for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * This program is distributed in the hope that it will be useful,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * but WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * GNU General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * You should have received a copy of the GNU General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * along with this program; if not, write to the Free Software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/mfd/88pm80x.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define PM800_LONG_ONKEY_EN (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define PM800_LONG_KEY_DELAY (8) /* 1 .. 16 seconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define PM800_LONKEY_PRESS_TIME ((PM800_LONG_KEY_DELAY-1) << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define PM800_LONKEY_PRESS_TIME_MASK (0xF0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define PM800_SW_PDOWN (1 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct pm80x_onkey_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct input_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct pm80x_chip *pm80x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct regmap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /* 88PM80x gives us an interrupt when ONKEY is held */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static irqreturn_t pm80x_onkey_handler(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct pm80x_onkey_info *info = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) ret = regmap_read(info->map, PM800_STATUS_1, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) dev_err(info->idev->dev.parent, "failed to read status: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) return IRQ_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) val &= PM800_ONKEY_STS1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) input_report_key(info->idev, KEY_POWER, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) input_sync(info->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static SIMPLE_DEV_PM_OPS(pm80x_onkey_pm_ops, pm80x_dev_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) pm80x_dev_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static int pm80x_onkey_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct pm80x_onkey_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) info = kzalloc(sizeof(struct pm80x_onkey_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) info->pm80x = chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) info->irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (info->irq < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) info->map = info->pm80x->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (!info->map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) dev_err(&pdev->dev, "no regmap!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) info->idev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (!info->idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) dev_err(&pdev->dev, "Failed to allocate input dev\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) goto out;
^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) info->idev->name = "88pm80x_on";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) info->idev->phys = "88pm80x_on/input0";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) info->idev->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) info->idev->dev.parent = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) info->idev->evbit[0] = BIT_MASK(EV_KEY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) __set_bit(KEY_POWER, info->idev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) err = pm80x_request_irq(info->pm80x, info->irq, pm80x_onkey_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) IRQF_ONESHOT, "onkey", info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) dev_err(&pdev->dev, "Failed to request IRQ: #%d: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) info->irq, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) goto out_reg;
^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) err = input_register_device(info->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) dev_err(&pdev->dev, "Can't register input device: %d\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) goto out_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) platform_set_drvdata(pdev, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) /* Enable long onkey detection */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) regmap_update_bits(info->map, PM800_RTC_MISC4, PM800_LONG_ONKEY_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) PM800_LONG_ONKEY_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /* Set 8-second interval */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) regmap_update_bits(info->map, PM800_RTC_MISC3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) PM800_LONKEY_PRESS_TIME_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) PM800_LONKEY_PRESS_TIME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) device_init_wakeup(&pdev->dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) out_irq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) pm80x_free_irq(info->pm80x, info->irq, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) out_reg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) input_free_device(info->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) kfree(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static int pm80x_onkey_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct pm80x_onkey_info *info = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) pm80x_free_irq(info->pm80x, info->irq, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) input_unregister_device(info->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) kfree(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static struct platform_driver pm80x_onkey_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) .name = "88pm80x-onkey",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) .pm = &pm80x_onkey_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .probe = pm80x_onkey_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .remove = pm80x_onkey_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) module_platform_driver(pm80x_onkey_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) MODULE_DESCRIPTION("Marvell 88PM80x ONKEY driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) MODULE_ALIAS("platform:88pm80x-onkey");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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