diff options
Diffstat (limited to 'drivers/media/usb/gspca/konica.c')
| -rw-r--r-- | drivers/media/usb/gspca/konica.c | 478 |
1 files changed, 478 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/konica.c b/drivers/media/usb/gspca/konica.c new file mode 100644 index 000000000..53db9a289 --- /dev/null +++ b/drivers/media/usb/gspca/konica.c @@ -0,0 +1,478 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for USB webcams based on Konica chipset. This + * chipset is used in Intel YC76 camera. + * + * Copyright (C) 2010 Hans de Goede <hdegoede@redhat.com> + * + * Based on the usbvideo v4l1 konicawc driver which is: + * + * Copyright (C) 2002 Simon Evans <spse@secret.org.uk> + * + * The code for making gspca work with a webcam with 2 isoc endpoints was + * taken from the benq gspca subdriver which is: + * + * Copyright (C) 2009 Jean-Francois Moine (http://moinejf.free.fr) + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#define MODULE_NAME "konica" + +#include <linux/input.h> +#include "gspca.h" + +MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); +MODULE_DESCRIPTION("Konica chipset USB Camera Driver"); +MODULE_LICENSE("GPL"); + +#define WHITEBAL_REG 0x01 +#define BRIGHTNESS_REG 0x02 +#define SHARPNESS_REG 0x03 +#define CONTRAST_REG 0x04 +#define SATURATION_REG 0x05 + +/* specific webcam descriptor */ +struct sd { + struct gspca_dev gspca_dev; /* !! must be the first item */ + struct urb *last_data_urb; + u8 snapshot_pressed; +}; + + +/* .priv is what goes to register 8 for this mode, known working values: + 0x00 -> 176x144, cropped + 0x01 -> 176x144, cropped + 0x02 -> 176x144, cropped + 0x03 -> 176x144, cropped + 0x04 -> 176x144, binned + 0x05 -> 320x240 + 0x06 -> 320x240 + 0x07 -> 160x120, cropped + 0x08 -> 160x120, cropped + 0x09 -> 160x120, binned (note has 136 lines) + 0x0a -> 160x120, binned (note has 136 lines) + 0x0b -> 160x120, cropped +*/ +static const struct v4l2_pix_format vga_mode[] = { + {160, 120, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE, + .bytesperline = 160, + .sizeimage = 160 * 136 * 3 / 2 + 960, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 0x0a}, + {176, 144, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE, + .bytesperline = 176, + .sizeimage = 176 * 144 * 3 / 2 + 960, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 0x04}, + {320, 240, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE, + .bytesperline = 320, + .sizeimage = 320 * 240 * 3 / 2 + 960, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 0x05}, +}; + +static void sd_isoc_irq(struct urb *urb); + +static void reg_w(struct gspca_dev *gspca_dev, u16 value, u16 index) +{ + struct usb_device *dev = gspca_dev->dev; + int ret; + + if (gspca_dev->usb_err < 0) + return; + ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), + 0x02, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, + index, + NULL, + 0, + 1000); + if (ret < 0) { + pr_err("reg_w err writing %02x to %02x: %d\n", + value, index, ret); + gspca_dev->usb_err = ret; + } +} + +static void reg_r(struct gspca_dev *gspca_dev, u16 value, u16 index) +{ + struct usb_device *dev = gspca_dev->dev; + int ret; + + if (gspca_dev->usb_err < 0) + return; + ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), + 0x03, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, + index, + gspca_dev->usb_buf, + 2, + 1000); + if (ret < 0) { + pr_err("reg_r err %d\n", ret); + gspca_dev->usb_err = ret; + /* + * Make sure the buffer is zeroed to avoid uninitialized + * values. + */ + memset(gspca_dev->usb_buf, 0, 2); + } +} + +static void konica_stream_on(struct gspca_dev *gspca_dev) +{ + reg_w(gspca_dev, 1, 0x0b); +} + +static void konica_stream_off(struct gspca_dev *gspca_dev) +{ + reg_w(gspca_dev, 0, 0x0b); +} + +/* this function is called at probe time */ +static int sd_config(struct gspca_dev *gspca_dev, + const struct usb_device_id *id) +{ + gspca_dev->cam.cam_mode = vga_mode; + gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode); + gspca_dev->cam.no_urb_create = 1; + + return 0; +} + +/* this function is called at probe and resume time */ +static int sd_init(struct gspca_dev *gspca_dev) +{ + int i; + + /* + * The konica needs a freaking large time to "boot" (approx 6.5 sec.), + * and does not want to be bothered while doing so :| + * Register 0x10 counts from 1 - 3, with 3 being "ready" + */ + msleep(6000); + for (i = 0; i < 20; i++) { + reg_r(gspca_dev, 0, 0x10); + if (gspca_dev->usb_buf[0] == 3) + break; + msleep(100); + } + reg_w(gspca_dev, 0, 0x0d); + + return gspca_dev->usb_err; +} + +static int sd_start(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + struct urb *urb; + int i, n, packet_size; + struct usb_host_interface *alt; + struct usb_interface *intf; + + intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface); + alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt); + if (!alt) { + pr_err("Couldn't get altsetting\n"); + return -EIO; + } + + if (alt->desc.bNumEndpoints < 2) + return -ENODEV; + + packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize); + + n = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv; + reg_w(gspca_dev, n, 0x08); + + konica_stream_on(gspca_dev); + + if (gspca_dev->usb_err) + return gspca_dev->usb_err; + + /* create 4 URBs - 2 on endpoint 0x83 and 2 on 0x082 */ +#if MAX_NURBS < 4 +#error "Not enough URBs in the gspca table" +#endif +#define SD_NPKT 32 + for (n = 0; n < 4; n++) { + i = n & 1 ? 0 : 1; + packet_size = + le16_to_cpu(alt->endpoint[i].desc.wMaxPacketSize); + urb = usb_alloc_urb(SD_NPKT, GFP_KERNEL); + if (!urb) + return -ENOMEM; + gspca_dev->urb[n] = urb; + urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev, + packet_size * SD_NPKT, + GFP_KERNEL, + &urb->transfer_dma); + if (urb->transfer_buffer == NULL) { + pr_err("usb_buffer_alloc failed\n"); + return -ENOMEM; + } + + urb->dev = gspca_dev->dev; + urb->context = gspca_dev; + urb->transfer_buffer_length = packet_size * SD_NPKT; + urb->pipe = usb_rcvisocpipe(gspca_dev->dev, + n & 1 ? 0x81 : 0x82); + urb->transfer_flags = URB_ISO_ASAP + | URB_NO_TRANSFER_DMA_MAP; + urb->interval = 1; + urb->complete = sd_isoc_irq; + urb->number_of_packets = SD_NPKT; + for (i = 0; i < SD_NPKT; i++) { + urb->iso_frame_desc[i].length = packet_size; + urb->iso_frame_desc[i].offset = packet_size * i; + } + } + + return 0; +} + +static void sd_stopN(struct gspca_dev *gspca_dev) +{ + struct sd *sd __maybe_unused = (struct sd *) gspca_dev; + + konica_stream_off(gspca_dev); +#if IS_ENABLED(CONFIG_INPUT) + /* Don't keep the button in the pressed state "forever" if it was + pressed when streaming is stopped */ + if (sd->snapshot_pressed) { + input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0); + input_sync(gspca_dev->input_dev); + sd->snapshot_pressed = 0; + } +#endif +} + +/* reception of an URB */ +static void sd_isoc_irq(struct urb *urb) +{ + struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context; + struct sd *sd = (struct sd *) gspca_dev; + struct urb *data_urb, *status_urb; + u8 *data; + int i, st; + + gspca_dbg(gspca_dev, D_PACK, "sd isoc irq\n"); + if (!gspca_dev->streaming) + return; + + if (urb->status != 0) { + if (urb->status == -ESHUTDOWN) + return; /* disconnection */ +#ifdef CONFIG_PM + if (gspca_dev->frozen) + return; +#endif + gspca_err(gspca_dev, "urb status: %d\n", urb->status); + st = usb_submit_urb(urb, GFP_ATOMIC); + if (st < 0) + pr_err("resubmit urb error %d\n", st); + return; + } + + /* if this is a data URB (ep 0x82), wait */ + if (urb->transfer_buffer_length > 32) { + sd->last_data_urb = urb; + return; + } + + status_urb = urb; + data_urb = sd->last_data_urb; + sd->last_data_urb = NULL; + + if (!data_urb || data_urb->start_frame != status_urb->start_frame) { + gspca_err(gspca_dev, "lost sync on frames\n"); + goto resubmit; + } + + if (data_urb->number_of_packets != status_urb->number_of_packets) { + gspca_err(gspca_dev, "no packets does not match, data: %d, status: %d\n", + data_urb->number_of_packets, + status_urb->number_of_packets); + goto resubmit; + } + + for (i = 0; i < status_urb->number_of_packets; i++) { + if (data_urb->iso_frame_desc[i].status || + status_urb->iso_frame_desc[i].status) { + gspca_err(gspca_dev, "pkt %d data-status %d, status-status %d\n", + i, + data_urb->iso_frame_desc[i].status, + status_urb->iso_frame_desc[i].status); + gspca_dev->last_packet_type = DISCARD_PACKET; + continue; + } + + if (status_urb->iso_frame_desc[i].actual_length != 1) { + gspca_err(gspca_dev, "bad status packet length %d\n", + status_urb->iso_frame_desc[i].actual_length); + gspca_dev->last_packet_type = DISCARD_PACKET; + continue; + } + + st = *((u8 *)status_urb->transfer_buffer + + status_urb->iso_frame_desc[i].offset); + + data = (u8 *)data_urb->transfer_buffer + + data_urb->iso_frame_desc[i].offset; + + /* st: 0x80-0xff: frame start with frame number (ie 0-7f) + * otherwise: + * bit 0 0: keep packet + * 1: drop packet (padding data) + * + * bit 4 0 button not clicked + * 1 button clicked + * button is used to `take a picture' (in software) + */ + if (st & 0x80) { + gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); + gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0); + } else { +#if IS_ENABLED(CONFIG_INPUT) + u8 button_state = st & 0x40 ? 1 : 0; + if (sd->snapshot_pressed != button_state) { + input_report_key(gspca_dev->input_dev, + KEY_CAMERA, + button_state); + input_sync(gspca_dev->input_dev); + sd->snapshot_pressed = button_state; + } +#endif + if (st & 0x01) + continue; + } + gspca_frame_add(gspca_dev, INTER_PACKET, data, + data_urb->iso_frame_desc[i].actual_length); + } + +resubmit: + if (data_urb) { + st = usb_submit_urb(data_urb, GFP_ATOMIC); + if (st < 0) + gspca_err(gspca_dev, "usb_submit_urb(data_urb) ret %d\n", + st); + } + st = usb_submit_urb(status_urb, GFP_ATOMIC); + if (st < 0) + gspca_err(gspca_dev, "usb_submit_urb(status_urb) ret %d\n", st); +} + +static int sd_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct gspca_dev *gspca_dev = + container_of(ctrl->handler, struct gspca_dev, ctrl_handler); + + gspca_dev->usb_err = 0; + + if (!gspca_dev->streaming) + return 0; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + konica_stream_off(gspca_dev); + reg_w(gspca_dev, ctrl->val, BRIGHTNESS_REG); + konica_stream_on(gspca_dev); + break; + case V4L2_CID_CONTRAST: + konica_stream_off(gspca_dev); + reg_w(gspca_dev, ctrl->val, CONTRAST_REG); + konica_stream_on(gspca_dev); + break; + case V4L2_CID_SATURATION: + konica_stream_off(gspca_dev); + reg_w(gspca_dev, ctrl->val, SATURATION_REG); + konica_stream_on(gspca_dev); + break; + case V4L2_CID_WHITE_BALANCE_TEMPERATURE: + konica_stream_off(gspca_dev); + reg_w(gspca_dev, ctrl->val, WHITEBAL_REG); + konica_stream_on(gspca_dev); + break; + case V4L2_CID_SHARPNESS: + konica_stream_off(gspca_dev); + reg_w(gspca_dev, ctrl->val, SHARPNESS_REG); + konica_stream_on(gspca_dev); + break; + } + return gspca_dev->usb_err; +} + +static const struct v4l2_ctrl_ops sd_ctrl_ops = { + .s_ctrl = sd_s_ctrl, +}; + +static int sd_init_controls(struct gspca_dev *gspca_dev) +{ + struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; + + gspca_dev->vdev.ctrl_handler = hdl; + v4l2_ctrl_handler_init(hdl, 5); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_BRIGHTNESS, 0, 9, 1, 4); + /* Needs to be verified */ + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_CONTRAST, 0, 9, 1, 4); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_SATURATION, 0, 9, 1, 4); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_WHITE_BALANCE_TEMPERATURE, + 0, 33, 1, 25); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_SHARPNESS, 0, 9, 1, 4); + + if (hdl->error) { + pr_err("Could not initialize controls\n"); + return hdl->error; + } + return 0; +} + +/* sub-driver description */ +static const struct sd_desc sd_desc = { + .name = MODULE_NAME, + .config = sd_config, + .init = sd_init, + .init_controls = sd_init_controls, + .start = sd_start, + .stopN = sd_stopN, +#if IS_ENABLED(CONFIG_INPUT) + .other_input = 1, +#endif +}; + +/* -- module initialisation -- */ +static const struct usb_device_id device_table[] = { + {USB_DEVICE(0x04c8, 0x0720)}, /* Intel YC 76 */ + {} +}; +MODULE_DEVICE_TABLE(usb, device_table); + +/* -- device connect -- */ +static int sd_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), + THIS_MODULE); +} + +static struct usb_driver sd_driver = { + .name = MODULE_NAME, + .id_table = device_table, + .probe = sd_probe, + .disconnect = gspca_disconnect, +#ifdef CONFIG_PM + .suspend = gspca_suspend, + .resume = gspca_resume, + .reset_resume = gspca_resume, +#endif +}; + +module_usb_driver(sd_driver); |