^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * drivers/misc/usb_cam_gpio.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2012-2016 Rockchip Co.,Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Author: Bin Yang <yangbin@rock-chips.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * This software is licensed under the terms of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * License version 2, as published by the Free Software Foundation, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * may be copied, distributed, and modified under those terms.
^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) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/miscdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/delay.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/freezer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/of_gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static struct class *usb_cam_gpio_class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct usb_cam_gpio {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct device sys_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct gpio_desc *gpio_cam_hd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct gpio_desc *gpio_cam_ir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static ssize_t hd_camera_on_show(struct device *sys_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct usb_cam_gpio *gpiod = container_of(sys_dev, struct usb_cam_gpio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) sys_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) return sprintf(buf, "%d\n", gpiod_get_value(gpiod->gpio_cam_hd));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static ssize_t hd_camera_on_store(struct device *sys_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct usb_cam_gpio *gpiod = container_of(sys_dev, struct usb_cam_gpio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) sys_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) int val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) ret = kstrtoint(buf, 0, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) val = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) gpiod_set_value(gpiod->gpio_cam_hd, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static DEVICE_ATTR_RW(hd_camera_on);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static ssize_t ir_camera_on_show(struct device *sys_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct usb_cam_gpio *gpiod = container_of(sys_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct usb_cam_gpio, sys_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return sprintf(buf, "%d\n", gpiod_get_value(gpiod->gpio_cam_ir));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static ssize_t ir_camera_on_store(struct device *sys_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct usb_cam_gpio *gpiod = container_of(sys_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct usb_cam_gpio, sys_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) ret = kstrtoint(buf, 0, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) val = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) gpiod_set_value(gpiod->gpio_cam_ir, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) static DEVICE_ATTR_RW(ir_camera_on);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static struct attribute *usb_cam_gpio_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) &dev_attr_hd_camera_on.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) &dev_attr_ir_camera_on.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) ATTRIBUTE_GROUPS(usb_cam_gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static int usb_cam_gpio_device_register(struct usb_cam_gpio *gpiod)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct device *dev = &gpiod->sys_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) const char *name = {"usb_camera_on"};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) dev->class = usb_cam_gpio_class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) dev_set_name(dev, "%s", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) dev_set_drvdata(dev, gpiod);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) ret = device_register(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static int usb_cam_gpio_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct usb_cam_gpio *gpiod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) usb_cam_gpio_class = class_create(THIS_MODULE, "usb_cam_gpio");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (IS_ERR(usb_cam_gpio_class)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) pr_err("create uvc_detection class failed (%ld)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) PTR_ERR(usb_cam_gpio_class));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return PTR_ERR(usb_cam_gpio_class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) usb_cam_gpio_class->dev_groups = usb_cam_gpio_groups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) gpiod = devm_kzalloc(&pdev->dev, sizeof(*gpiod), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (!gpiod)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) gpiod->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) gpiod->gpio_cam_hd = devm_gpiod_get_optional(gpiod->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) "hd-cam", GPIOD_OUT_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (IS_ERR(gpiod->gpio_cam_hd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) dev_warn(gpiod->dev, "Could not get hd-cam-gpios!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) gpiod->gpio_cam_hd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) gpiod->gpio_cam_ir = devm_gpiod_get_optional(gpiod->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) "ir-cam", GPIOD_OUT_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (IS_ERR(gpiod->gpio_cam_ir)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) dev_warn(gpiod->dev, "Could not get ir-cam-gpios!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) gpiod->gpio_cam_ir = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) ret = usb_cam_gpio_device_register(gpiod);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) dev_err(gpiod->dev, "usb_cam_gpio device register fail\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) dev_info(gpiod->dev, "usb_cam_gpio_probe success\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static const struct of_device_id usb_cam_gpio_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) { .compatible = "usb-cam-gpio" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) { /* Sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static int usb_cam_gpio_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (!IS_ERR(usb_cam_gpio_class))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) class_destroy(usb_cam_gpio_class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static struct platform_driver usb_cam_gpio_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .probe = usb_cam_gpio_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) .remove = usb_cam_gpio_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) .name = "usb_cam_gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .of_match_table = usb_cam_gpio_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) module_platform_driver(usb_cam_gpio_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) MODULE_ALIAS("platform:usb_cam_gpio");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) MODULE_AUTHOR("Bin Yang <yangbin@rock-chips.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) MODULE_DESCRIPTION("usb camera gpio driver");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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