diff options
Diffstat (limited to 'drivers/media/video/pwc/pwc-if.c')
| -rw-r--r-- | drivers/media/video/pwc/pwc-if.c | 79 |
1 files changed, 65 insertions, 14 deletions
diff --git a/drivers/media/video/pwc/pwc-if.c b/drivers/media/video/pwc/pwc-if.c index 0d810189dd87..7c542caf248e 100644 --- a/drivers/media/video/pwc/pwc-if.c +++ b/drivers/media/video/pwc/pwc-if.c @@ -53,6 +53,7 @@ - Xavier Roche: QuickCam Pro 4000 ID - Jens Knudsen: QuickCam Zoom ID - J. Debert: QuickCam for Notebooks ID + - Pham Thanh Nam: webcam snapshot button as an event input device */ #include <linux/errno.h> @@ -61,6 +62,9 @@ #include <linux/module.h> #include <linux/poll.h> #include <linux/slab.h> +#ifdef CONFIG_USB_PWC_INPUT_EVDEV +#include <linux/usb/input.h> +#endif #include <linux/vmalloc.h> #include <asm/io.h> @@ -586,6 +590,23 @@ static void pwc_frame_dumped(struct pwc_device *pdev) pdev->vframe_count); } +static void pwc_snapshot_button(struct pwc_device *pdev, int down) +{ + if (down) { + PWC_TRACE("Snapshot button pressed.\n"); + pdev->snapshot_button_status = 1; + } else { + PWC_TRACE("Snapshot button released.\n"); + } + +#ifdef CONFIG_USB_PWC_INPUT_EVDEV + if (pdev->button_dev) { + input_report_key(pdev->button_dev, BTN_0, down); + input_sync(pdev->button_dev); + } +#endif +} + static int pwc_rcv_short_packet(struct pwc_device *pdev, const struct pwc_frame_buf *fbuf) { int awake = 0; @@ -603,13 +624,7 @@ static int pwc_rcv_short_packet(struct pwc_device *pdev, const struct pwc_frame_ pdev->vframes_error++; } if ((ptr[0] ^ pdev->vmirror) & 0x01) { - if (ptr[0] & 0x01) { - pdev->snapshot_button_status = 1; - PWC_TRACE("Snapshot button pressed.\n"); - } - else { - PWC_TRACE("Snapshot button released.\n"); - } + pwc_snapshot_button(pdev, ptr[0] & 0x01); } if ((ptr[0] ^ pdev->vmirror) & 0x02) { if (ptr[0] & 0x02) @@ -633,12 +648,7 @@ static int pwc_rcv_short_packet(struct pwc_device *pdev, const struct pwc_frame_ else if (pdev->type == 740 || pdev->type == 720) { unsigned char *ptr = (unsigned char *)fbuf->data; if ((ptr[0] ^ pdev->vmirror) & 0x01) { - if (ptr[0] & 0x01) { - pdev->snapshot_button_status = 1; - PWC_TRACE("Snapshot button pressed.\n"); - } - else - PWC_TRACE("Snapshot button released.\n"); + pwc_snapshot_button(pdev, ptr[0] & 0x01); } pdev->vmirror = ptr[0] & 0x03; } @@ -1115,6 +1125,7 @@ static int pwc_video_open(struct file *file) } mutex_lock(&pdev->modlock); + pwc_construct(pdev); /* set min/max sizes correct */ if (!pdev->usb_init) { PWC_DEBUG_OPEN("Doing first time initialization.\n"); pdev->usb_init = 1; @@ -1139,7 +1150,6 @@ static int pwc_video_open(struct file *file) if (pwc_set_leds(pdev, led_on, led_off) < 0) PWC_DEBUG_OPEN("Failed to set LED on/off time.\n"); - pwc_construct(pdev); /* set min/max sizes correct */ /* So far, so good. Allocate memory. */ i = pwc_allocate_buffers(pdev); @@ -1216,6 +1226,15 @@ static void pwc_cleanup(struct pwc_device *pdev) { pwc_remove_sysfs_files(pdev->vdev); video_unregister_device(pdev->vdev); + +#ifdef CONFIG_USB_PWC_INPUT_EVDEV + if (pdev->button_dev) { + input_unregister_device(pdev->button_dev); + input_free_device(pdev->button_dev); + kfree(pdev->button_dev->phys); + pdev->button_dev = NULL; + } +#endif } /* Note that all cleanup is done in the reverse order as in _open */ @@ -1483,6 +1502,9 @@ static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id int features = 0; int video_nr = -1; /* default: use next available device */ char serial_number[30], *name; +#ifdef CONFIG_USB_PWC_INPUT_EVDEV + char *phys = NULL; +#endif vendor_id = le16_to_cpu(udev->descriptor.idVendor); product_id = le16_to_cpu(udev->descriptor.idProduct); @@ -1807,6 +1829,35 @@ static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id pwc_set_leds(pdev, 0, 0); pwc_camera_power(pdev, 0); +#ifdef CONFIG_USB_PWC_INPUT_EVDEV + /* register webcam snapshot button input device */ + pdev->button_dev = input_allocate_device(); + if (!pdev->button_dev) { + PWC_ERROR("Err, insufficient memory for webcam snapshot button device."); + return -ENOMEM; + } + + pdev->button_dev->name = "PWC snapshot button"; + phys = kasprintf(GFP_KERNEL,"usb-%s-%s", pdev->udev->bus->bus_name, pdev->udev->devpath); + if (!phys) { + input_free_device(pdev->button_dev); + return -ENOMEM; + } + pdev->button_dev->phys = phys; + usb_to_input_id(pdev->udev, &pdev->button_dev->id); + pdev->button_dev->dev.parent = &pdev->udev->dev; + pdev->button_dev->evbit[0] = BIT_MASK(EV_KEY); + pdev->button_dev->keybit[BIT_WORD(BTN_0)] = BIT_MASK(BTN_0); + + rc = input_register_device(pdev->button_dev); + if (rc) { + input_free_device(pdev->button_dev); + kfree(pdev->button_dev->phys); + pdev->button_dev = NULL; + return rc; + } +#endif + return 0; err_unreg: |