| /* |
| * spca1528 subdriver |
| * |
| * Copyright (C) 2010-2011 Jean-Francois Moine (http://moinejf.free.fr) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #define MODULE_NAME "spca1528" |
| |
| #include "gspca.h" |
| #include "jpeg.h" |
| |
| MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>"); |
| MODULE_DESCRIPTION("SPCA1528 USB Camera Driver"); |
| MODULE_LICENSE("GPL"); |
| |
| /* specific webcam descriptor */ |
| struct sd { |
| struct gspca_dev gspca_dev; /* !! must be the first item */ |
| |
| u8 brightness; |
| u8 contrast; |
| u8 hue; |
| u8 color; |
| u8 sharpness; |
| |
| u8 pkt_seq; |
| |
| u8 jpeg_hdr[JPEG_HDR_SZ]; |
| }; |
| |
| /* V4L2 controls supported by the driver */ |
| static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val); |
| static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val); |
| static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val); |
| static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val); |
| static int sd_sethue(struct gspca_dev *gspca_dev, __s32 val); |
| static int sd_gethue(struct gspca_dev *gspca_dev, __s32 *val); |
| static int sd_setcolor(struct gspca_dev *gspca_dev, __s32 val); |
| static int sd_getcolor(struct gspca_dev *gspca_dev, __s32 *val); |
| static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val); |
| static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val); |
| |
| static const struct ctrl sd_ctrls[] = { |
| { |
| { |
| .id = V4L2_CID_BRIGHTNESS, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Brightness", |
| .minimum = 0, |
| .maximum = 255, |
| .step = 1, |
| #define BRIGHTNESS_DEF 128 |
| .default_value = BRIGHTNESS_DEF, |
| }, |
| .set = sd_setbrightness, |
| .get = sd_getbrightness, |
| }, |
| { |
| { |
| .id = V4L2_CID_CONTRAST, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Contrast", |
| .minimum = 0, |
| .maximum = 8, |
| .step = 1, |
| #define CONTRAST_DEF 1 |
| .default_value = CONTRAST_DEF, |
| }, |
| .set = sd_setcontrast, |
| .get = sd_getcontrast, |
| }, |
| { |
| { |
| .id = V4L2_CID_HUE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Hue", |
| .minimum = 0, |
| .maximum = 255, |
| .step = 1, |
| #define HUE_DEF 0 |
| .default_value = HUE_DEF, |
| }, |
| .set = sd_sethue, |
| .get = sd_gethue, |
| }, |
| { |
| { |
| .id = V4L2_CID_SATURATION, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Saturation", |
| .minimum = 0, |
| .maximum = 8, |
| .step = 1, |
| #define COLOR_DEF 1 |
| .default_value = COLOR_DEF, |
| }, |
| .set = sd_setcolor, |
| .get = sd_getcolor, |
| }, |
| { |
| { |
| .id = V4L2_CID_SHARPNESS, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Sharpness", |
| .minimum = 0, |
| .maximum = 255, |
| .step = 1, |
| #define SHARPNESS_DEF 0 |
| .default_value = SHARPNESS_DEF, |
| }, |
| .set = sd_setsharpness, |
| .get = sd_getsharpness, |
| }, |
| }; |
| |
| static const struct v4l2_pix_format vga_mode[] = { |
| /* (does not work correctly) |
| {176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, |
| .bytesperline = 176, |
| .sizeimage = 176 * 144 * 5 / 8 + 590, |
| .colorspace = V4L2_COLORSPACE_JPEG, |
| .priv = 3}, |
| */ |
| {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, |
| .bytesperline = 320, |
| .sizeimage = 320 * 240 * 4 / 8 + 590, |
| .colorspace = V4L2_COLORSPACE_JPEG, |
| .priv = 2}, |
| {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, |
| .bytesperline = 640, |
| .sizeimage = 640 * 480 * 3 / 8 + 590, |
| .colorspace = V4L2_COLORSPACE_JPEG, |
| .priv = 1}, |
| }; |
| |
| /* read <len> bytes to gspca usb_buf */ |
| static void reg_r(struct gspca_dev *gspca_dev, |
| u8 req, |
| u16 index, |
| int len) |
| { |
| #if USB_BUF_SZ < 64 |
| #error "USB buffer too small" |
| #endif |
| 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), |
| req, |
| USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 0x0000, /* value */ |
| index, |
| gspca_dev->usb_buf, len, |
| 500); |
| PDEBUG(D_USBI, "GET %02x 0000 %04x %02x", req, index, |
| gspca_dev->usb_buf[0]); |
| if (ret < 0) { |
| pr_err("reg_r err %d\n", ret); |
| gspca_dev->usb_err = ret; |
| } |
| } |
| |
| static void reg_w(struct gspca_dev *gspca_dev, |
| u8 req, |
| u16 value, |
| u16 index) |
| { |
| struct usb_device *dev = gspca_dev->dev; |
| int ret; |
| |
| if (gspca_dev->usb_err < 0) |
| return; |
| PDEBUG(D_USBO, "SET %02x %04x %04x", req, value, index); |
| ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| req, |
| USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| value, index, |
| NULL, 0, 500); |
| if (ret < 0) { |
| pr_err("reg_w err %d\n", ret); |
| gspca_dev->usb_err = ret; |
| } |
| } |
| |
| static void reg_wb(struct gspca_dev *gspca_dev, |
| u8 req, |
| u16 value, |
| u16 index, |
| u8 byte) |
| { |
| struct usb_device *dev = gspca_dev->dev; |
| int ret; |
| |
| if (gspca_dev->usb_err < 0) |
| return; |
| PDEBUG(D_USBO, "SET %02x %04x %04x %02x", req, value, index, byte); |
| gspca_dev->usb_buf[0] = byte; |
| ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| req, |
| USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| value, index, |
| gspca_dev->usb_buf, 1, 500); |
| if (ret < 0) { |
| pr_err("reg_w err %d\n", ret); |
| gspca_dev->usb_err = ret; |
| } |
| } |
| |
| static void wait_status_0(struct gspca_dev *gspca_dev) |
| { |
| int i, w; |
| |
| i = 16; |
| w = 0; |
| do { |
| reg_r(gspca_dev, 0x21, 0x0000, 1); |
| if (gspca_dev->usb_buf[0] == 0) |
| return; |
| w += 15; |
| msleep(w); |
| } while (--i > 0); |
| PDEBUG(D_ERR, "wait_status_0 timeout"); |
| gspca_dev->usb_err = -ETIME; |
| } |
| |
| static void wait_status_1(struct gspca_dev *gspca_dev) |
| { |
| int i; |
| |
| i = 10; |
| do { |
| reg_r(gspca_dev, 0x21, 0x0001, 1); |
| msleep(10); |
| if (gspca_dev->usb_buf[0] == 1) { |
| reg_wb(gspca_dev, 0x21, 0x0000, 0x0001, 0x00); |
| reg_r(gspca_dev, 0x21, 0x0001, 1); |
| return; |
| } |
| } while (--i > 0); |
| PDEBUG(D_ERR, "wait_status_1 timeout"); |
| gspca_dev->usb_err = -ETIME; |
| } |
| |
| static void setbrightness(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| reg_wb(gspca_dev, 0xc0, 0x0000, 0x00c0, sd->brightness); |
| } |
| |
| static void setcontrast(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| reg_wb(gspca_dev, 0xc1, 0x0000, 0x00c1, sd->contrast); |
| } |
| |
| static void sethue(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| reg_wb(gspca_dev, 0xc2, 0x0000, 0x0000, sd->hue); |
| } |
| |
| static void setcolor(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| reg_wb(gspca_dev, 0xc3, 0x0000, 0x00c3, sd->color); |
| } |
| |
| static void setsharpness(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| reg_wb(gspca_dev, 0xc4, 0x0000, 0x00c4, sd->sharpness); |
| } |
| |
| /* this function is called at probe time */ |
| static int sd_config(struct gspca_dev *gspca_dev, |
| const struct usb_device_id *id) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| gspca_dev->cam.cam_mode = vga_mode; |
| gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode); |
| gspca_dev->cam.npkt = 128; /* number of packets per ISOC message */ |
| /*fixme: 256 in ms-win traces*/ |
| |
| sd->brightness = BRIGHTNESS_DEF; |
| sd->contrast = CONTRAST_DEF; |
| sd->hue = HUE_DEF; |
| sd->color = COLOR_DEF; |
| sd->sharpness = SHARPNESS_DEF; |
| |
| return 0; |
| } |
| |
| /* this function is called at probe and resume time */ |
| static int sd_init(struct gspca_dev *gspca_dev) |
| { |
| reg_w(gspca_dev, 0x00, 0x0001, 0x2067); |
| reg_w(gspca_dev, 0x00, 0x00d0, 0x206b); |
| reg_w(gspca_dev, 0x00, 0x0000, 0x206c); |
| reg_w(gspca_dev, 0x00, 0x0001, 0x2069); |
| msleep(8); |
| reg_w(gspca_dev, 0x00, 0x00c0, 0x206b); |
| reg_w(gspca_dev, 0x00, 0x0000, 0x206c); |
| reg_w(gspca_dev, 0x00, 0x0001, 0x2069); |
| |
| reg_r(gspca_dev, 0x20, 0x0000, 1); |
| reg_r(gspca_dev, 0x20, 0x0000, 5); |
| reg_r(gspca_dev, 0x23, 0x0000, 64); |
| PDEBUG(D_PROBE, "%s%s", &gspca_dev->usb_buf[0x1c], |
| &gspca_dev->usb_buf[0x30]); |
| reg_r(gspca_dev, 0x23, 0x0001, 64); |
| return gspca_dev->usb_err; |
| } |
| |
| /* function called at start time before URB creation */ |
| static int sd_isoc_init(struct gspca_dev *gspca_dev) |
| { |
| u8 mode; |
| |
| reg_r(gspca_dev, 0x00, 0x2520, 1); |
| wait_status_0(gspca_dev); |
| reg_w(gspca_dev, 0xc5, 0x0003, 0x0000); |
| wait_status_1(gspca_dev); |
| |
| wait_status_0(gspca_dev); |
| mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv; |
| reg_wb(gspca_dev, 0x25, 0x0000, 0x0004, mode); |
| reg_r(gspca_dev, 0x25, 0x0004, 1); |
| reg_wb(gspca_dev, 0x27, 0x0000, 0x0000, 0x06); /* 420 */ |
| reg_r(gspca_dev, 0x27, 0x0000, 1); |
| |
| /* not useful.. |
| gspca_dev->alt = 4; * use alternate setting 3 */ |
| |
| return gspca_dev->usb_err; |
| } |
| |
| /* -- start the camera -- */ |
| static int sd_start(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| /* initialize the JPEG header */ |
| jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width, |
| 0x22); /* JPEG 411 */ |
| |
| /* the JPEG quality shall be 85% */ |
| jpeg_set_qual(sd->jpeg_hdr, 85); |
| |
| /* set the controls */ |
| setbrightness(gspca_dev); |
| setcontrast(gspca_dev); |
| sethue(gspca_dev); |
| setcolor(gspca_dev); |
| setsharpness(gspca_dev); |
| |
| msleep(5); |
| reg_r(gspca_dev, 0x00, 0x2520, 1); |
| msleep(8); |
| |
| /* start the capture */ |
| wait_status_0(gspca_dev); |
| reg_w(gspca_dev, 0x31, 0x0000, 0x0004); /* start request */ |
| wait_status_1(gspca_dev); |
| wait_status_0(gspca_dev); |
| msleep(200); |
| |
| sd->pkt_seq = 0; |
| return gspca_dev->usb_err; |
| } |
| |
| static void sd_stopN(struct gspca_dev *gspca_dev) |
| { |
| /* stop the capture */ |
| wait_status_0(gspca_dev); |
| reg_w(gspca_dev, 0x31, 0x0000, 0x0000); /* stop request */ |
| wait_status_1(gspca_dev); |
| wait_status_0(gspca_dev); |
| } |
| |
| /* move a packet adding 0x00 after 0xff */ |
| static void add_packet(struct gspca_dev *gspca_dev, |
| u8 *data, |
| int len) |
| { |
| int i; |
| |
| i = 0; |
| do { |
| if (data[i] == 0xff) { |
| gspca_frame_add(gspca_dev, INTER_PACKET, |
| data, i + 1); |
| len -= i; |
| data += i; |
| *data = 0x00; |
| i = 0; |
| } |
| } while (++i < len); |
| gspca_frame_add(gspca_dev, INTER_PACKET, data, len); |
| } |
| |
| static void sd_pkt_scan(struct gspca_dev *gspca_dev, |
| u8 *data, /* isoc packet */ |
| int len) /* iso packet length */ |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| static const u8 ffd9[] = {0xff, 0xd9}; |
| |
| /* image packets start with: |
| * 02 8n |
| * with <n> bit: |
| * 0x01: even (0) / odd (1) image |
| * 0x02: end of image when set |
| */ |
| if (len < 3) |
| return; /* empty packet */ |
| if (*data == 0x02) { |
| if (data[1] & 0x02) { |
| sd->pkt_seq = !(data[1] & 1); |
| add_packet(gspca_dev, data + 2, len - 2); |
| gspca_frame_add(gspca_dev, LAST_PACKET, |
| ffd9, 2); |
| return; |
| } |
| if ((data[1] & 1) != sd->pkt_seq) |
| goto err; |
| if (gspca_dev->last_packet_type == LAST_PACKET) |
| gspca_frame_add(gspca_dev, FIRST_PACKET, |
| sd->jpeg_hdr, JPEG_HDR_SZ); |
| add_packet(gspca_dev, data + 2, len - 2); |
| return; |
| } |
| err: |
| gspca_dev->last_packet_type = DISCARD_PACKET; |
| } |
| |
| static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| sd->brightness = val; |
| if (gspca_dev->streaming) |
| setbrightness(gspca_dev); |
| return gspca_dev->usb_err; |
| } |
| |
| static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| *val = sd->brightness; |
| return 0; |
| } |
| |
| static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| sd->contrast = val; |
| if (gspca_dev->streaming) |
| setcontrast(gspca_dev); |
| return gspca_dev->usb_err; |
| } |
| |
| static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| *val = sd->contrast; |
| return 0; |
| } |
| |
| static int sd_sethue(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| sd->hue = val; |
| if (gspca_dev->streaming) |
| sethue(gspca_dev); |
| return gspca_dev->usb_err; |
| } |
| |
| static int sd_gethue(struct gspca_dev *gspca_dev, __s32 *val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| *val = sd->hue; |
| return 0; |
| } |
| |
| static int sd_setcolor(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| sd->color = val; |
| if (gspca_dev->streaming) |
| setcolor(gspca_dev); |
| return gspca_dev->usb_err; |
| } |
| |
| static int sd_getcolor(struct gspca_dev *gspca_dev, __s32 *val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| *val = sd->color; |
| return 0; |
| } |
| |
| static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| sd->sharpness = val; |
| if (gspca_dev->streaming) |
| setsharpness(gspca_dev); |
| return gspca_dev->usb_err; |
| } |
| |
| static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| *val = sd->sharpness; |
| return 0; |
| } |
| |
| /* sub-driver description */ |
| static const struct sd_desc sd_desc = { |
| .name = MODULE_NAME, |
| .ctrls = sd_ctrls, |
| .nctrls = ARRAY_SIZE(sd_ctrls), |
| .config = sd_config, |
| .init = sd_init, |
| .isoc_init = sd_isoc_init, |
| .start = sd_start, |
| .stopN = sd_stopN, |
| .pkt_scan = sd_pkt_scan, |
| }; |
| |
| /* -- module initialisation -- */ |
| static const struct usb_device_id device_table[] = { |
| {USB_DEVICE(0x04fc, 0x1528)}, |
| {} |
| }; |
| MODULE_DEVICE_TABLE(usb, device_table); |
| |
| /* -- device connect -- */ |
| static int sd_probe(struct usb_interface *intf, |
| const struct usb_device_id *id) |
| { |
| /* the video interface for isochronous transfer is 1 */ |
| if (intf->cur_altsetting->desc.bInterfaceNumber != 1) |
| return -ENODEV; |
| |
| return gspca_dev_probe2(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, |
| #endif |
| }; |
| |
| module_usb_driver(sd_driver); |
