diff options
Diffstat (limited to 'drivers/media/video/gspca/spca1528.c')
| -rw-r--r-- | drivers/media/video/gspca/spca1528.c | 605 |
1 files changed, 605 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/spca1528.c b/drivers/media/video/gspca/spca1528.c new file mode 100644 index 00000000000..3f514eb1d99 --- /dev/null +++ b/drivers/media/video/gspca/spca1528.c @@ -0,0 +1,605 @@ +/* + * spca1528 subdriver + * + * Copyright (C) 2010 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 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) { + PDEBUG(D_ERR, "reg_r err %d", 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) { + PDEBUG(D_ERR, "reg_w err %d", 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) { + PDEBUG(D_ERR, "reg_w err %d", ret); + gspca_dev->usb_err = ret; + } +} + +static void wait_status_0(struct gspca_dev *gspca_dev) +{ + int i; + + i = 20; + do { + reg_r(gspca_dev, 0x21, 0x0000, 1); + if (gspca_dev->usb_buf[0] == 0) + return; + msleep(30); + } 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; + + gspca_dev->nbalt = 4; /* use alternate setting 3 */ + + 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); + reg_r(gspca_dev, 0x27, 0x0000, 1); + 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 seems to be 82% */ + jpeg_set_qual(sd->jpeg_hdr, 82); + + /* 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); + 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); + 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 __devinitdata 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 insert / remove -- */ +static int __init sd_mod_init(void) +{ + int ret; + + ret = usb_register(&sd_driver); + if (ret < 0) + return ret; + info("registered"); + return 0; +} +static void __exit sd_mod_exit(void) +{ + usb_deregister(&sd_driver); + info("deregistered"); +} + +module_init(sd_mod_init); +module_exit(sd_mod_exit); |