diff options
Diffstat (limited to 'drivers/media/video/gspca/w996Xcf.c')
| -rw-r--r-- | drivers/media/video/gspca/w996Xcf.c | 567 |
1 files changed, 0 insertions, 567 deletions
diff --git a/drivers/media/video/gspca/w996Xcf.c b/drivers/media/video/gspca/w996Xcf.c deleted file mode 100644 index 9e3a909e0a00..000000000000 --- a/drivers/media/video/gspca/w996Xcf.c +++ /dev/null @@ -1,567 +0,0 @@ -/** - * - * GSPCA sub driver for W996[78]CF JPEG USB Dual Mode Camera Chip. - * - * Copyright (C) 2009 Hans de Goede <hdegoede@redhat.com> - * - * This module is adapted from the in kernel v4l1 w9968cf driver: - * - * Copyright (C) 2002-2004 by Luca Risolia <luca.risolia@studio.unibo.it> - * - * 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 - * - */ - -/* Note this is not a stand alone driver, it gets included in ov519.c, this - is a bit of a hack, but it needs the driver code for a lot of different - ov sensors which is already present in ov519.c (the old v4l1 driver used - the ovchipcam framework). When we have the time we really should move - the sensor drivers to v4l2 sub drivers, and properly split of this - driver from ov519.c */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#define W9968CF_I2C_BUS_DELAY 4 /* delay in us for I2C bit r/w operations */ - -#define Y_QUANTABLE (&sd->jpeg_hdr[JPEG_QT0_OFFSET]) -#define UV_QUANTABLE (&sd->jpeg_hdr[JPEG_QT1_OFFSET]) - -static const struct v4l2_pix_format w9968cf_vga_mode[] = { - {160, 120, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE, - .bytesperline = 160 * 2, - .sizeimage = 160 * 120 * 2, - .colorspace = V4L2_COLORSPACE_JPEG}, - {176, 144, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE, - .bytesperline = 176 * 2, - .sizeimage = 176 * 144 * 2, - .colorspace = V4L2_COLORSPACE_JPEG}, - {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, - .bytesperline = 320 * 2, - .sizeimage = 320 * 240 * 2, - .colorspace = V4L2_COLORSPACE_JPEG}, - {352, 288, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, - .bytesperline = 352 * 2, - .sizeimage = 352 * 288 * 2, - .colorspace = V4L2_COLORSPACE_JPEG}, - {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, - .bytesperline = 640 * 2, - .sizeimage = 640 * 480 * 2, - .colorspace = V4L2_COLORSPACE_JPEG}, -}; - -static void reg_w(struct sd *sd, u16 index, u16 value); - -/*-------------------------------------------------------------------------- - Write 64-bit data to the fast serial bus registers. - Return 0 on success, -1 otherwise. - --------------------------------------------------------------------------*/ -static void w9968cf_write_fsb(struct sd *sd, u16* data) -{ - struct usb_device *udev = sd->gspca_dev.dev; - u16 value; - int ret; - - if (sd->gspca_dev.usb_err < 0) - return; - - value = *data++; - memcpy(sd->gspca_dev.usb_buf, data, 6); - - ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0, - USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, - value, 0x06, sd->gspca_dev.usb_buf, 6, 500); - if (ret < 0) { - pr_err("Write FSB registers failed (%d)\n", ret); - sd->gspca_dev.usb_err = ret; - } -} - -/*-------------------------------------------------------------------------- - Write data to the serial bus control register. - Return 0 on success, a negative number otherwise. - --------------------------------------------------------------------------*/ -static void w9968cf_write_sb(struct sd *sd, u16 value) -{ - int ret; - - if (sd->gspca_dev.usb_err < 0) - return; - - /* We don't use reg_w here, as that would cause all writes when - bitbanging i2c to be logged, making the logs impossible to read */ - ret = usb_control_msg(sd->gspca_dev.dev, - usb_sndctrlpipe(sd->gspca_dev.dev, 0), - 0, - USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - value, 0x01, NULL, 0, 500); - - udelay(W9968CF_I2C_BUS_DELAY); - - if (ret < 0) { - pr_err("Write SB reg [01] %04x failed\n", value); - sd->gspca_dev.usb_err = ret; - } -} - -/*-------------------------------------------------------------------------- - Read data from the serial bus control register. - Return 0 on success, a negative number otherwise. - --------------------------------------------------------------------------*/ -static int w9968cf_read_sb(struct sd *sd) -{ - int ret; - - if (sd->gspca_dev.usb_err < 0) - return -1; - - /* We don't use reg_r here, as the w9968cf is special and has 16 - bit registers instead of 8 bit */ - ret = usb_control_msg(sd->gspca_dev.dev, - usb_rcvctrlpipe(sd->gspca_dev.dev, 0), - 1, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0, 0x01, sd->gspca_dev.usb_buf, 2, 500); - if (ret >= 0) { - ret = sd->gspca_dev.usb_buf[0] | - (sd->gspca_dev.usb_buf[1] << 8); - } else { - pr_err("Read SB reg [01] failed\n"); - sd->gspca_dev.usb_err = ret; - } - - udelay(W9968CF_I2C_BUS_DELAY); - - return ret; -} - -/*-------------------------------------------------------------------------- - Upload quantization tables for the JPEG compression. - This function is called by w9968cf_start_transfer(). - Return 0 on success, a negative number otherwise. - --------------------------------------------------------------------------*/ -static void w9968cf_upload_quantizationtables(struct sd *sd) -{ - u16 a, b; - int i, j; - - reg_w(sd, 0x39, 0x0010); /* JPEG clock enable */ - - for (i = 0, j = 0; i < 32; i++, j += 2) { - a = Y_QUANTABLE[j] | ((unsigned)(Y_QUANTABLE[j + 1]) << 8); - b = UV_QUANTABLE[j] | ((unsigned)(UV_QUANTABLE[j + 1]) << 8); - reg_w(sd, 0x40 + i, a); - reg_w(sd, 0x60 + i, b); - } - reg_w(sd, 0x39, 0x0012); /* JPEG encoder enable */ -} - -/**************************************************************************** - * Low-level I2C I/O functions. * - * The adapter supports the following I2C transfer functions: * - * i2c_adap_fastwrite_byte_data() (at 400 kHz bit frequency only) * - * i2c_adap_read_byte_data() * - * i2c_adap_read_byte() * - ****************************************************************************/ - -static void w9968cf_smbus_start(struct sd *sd) -{ - w9968cf_write_sb(sd, 0x0011); /* SDE=1, SDA=0, SCL=1 */ - w9968cf_write_sb(sd, 0x0010); /* SDE=1, SDA=0, SCL=0 */ -} - -static void w9968cf_smbus_stop(struct sd *sd) -{ - w9968cf_write_sb(sd, 0x0010); /* SDE=1, SDA=0, SCL=0 */ - w9968cf_write_sb(sd, 0x0011); /* SDE=1, SDA=0, SCL=1 */ - w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */ -} - -static void w9968cf_smbus_write_byte(struct sd *sd, u8 v) -{ - u8 bit; - int sda; - - for (bit = 0 ; bit < 8 ; bit++) { - sda = (v & 0x80) ? 2 : 0; - v <<= 1; - /* SDE=1, SDA=sda, SCL=0 */ - w9968cf_write_sb(sd, 0x10 | sda); - /* SDE=1, SDA=sda, SCL=1 */ - w9968cf_write_sb(sd, 0x11 | sda); - /* SDE=1, SDA=sda, SCL=0 */ - w9968cf_write_sb(sd, 0x10 | sda); - } -} - -static void w9968cf_smbus_read_byte(struct sd *sd, u8 *v) -{ - u8 bit; - - /* No need to ensure SDA is high as we are always called after - read_ack which ends with SDA high */ - *v = 0; - for (bit = 0 ; bit < 8 ; bit++) { - *v <<= 1; - /* SDE=1, SDA=1, SCL=1 */ - w9968cf_write_sb(sd, 0x0013); - *v |= (w9968cf_read_sb(sd) & 0x0008) ? 1 : 0; - /* SDE=1, SDA=1, SCL=0 */ - w9968cf_write_sb(sd, 0x0012); - } -} - -static void w9968cf_smbus_write_nack(struct sd *sd) -{ - /* No need to ensure SDA is high as we are always called after - read_byte which ends with SDA high */ - w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */ - w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */ -} - -static void w9968cf_smbus_read_ack(struct sd *sd) -{ - int sda; - - /* Ensure SDA is high before raising clock to avoid a spurious stop */ - w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */ - w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */ - sda = w9968cf_read_sb(sd); - w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */ - if (sda >= 0 && (sda & 0x08)) { - PDEBUG(D_USBI, "Did not receive i2c ACK"); - sd->gspca_dev.usb_err = -EIO; - } -} - -/* SMBus protocol: S Addr Wr [A] Subaddr [A] Value [A] P */ -static void w9968cf_i2c_w(struct sd *sd, u8 reg, u8 value) -{ - u16* data = (u16 *)sd->gspca_dev.usb_buf; - - data[0] = 0x082f | ((sd->sensor_addr & 0x80) ? 0x1500 : 0x0); - data[0] |= (sd->sensor_addr & 0x40) ? 0x4000 : 0x0; - data[1] = 0x2082 | ((sd->sensor_addr & 0x40) ? 0x0005 : 0x0); - data[1] |= (sd->sensor_addr & 0x20) ? 0x0150 : 0x0; - data[1] |= (sd->sensor_addr & 0x10) ? 0x5400 : 0x0; - data[2] = 0x8208 | ((sd->sensor_addr & 0x08) ? 0x0015 : 0x0); - data[2] |= (sd->sensor_addr & 0x04) ? 0x0540 : 0x0; - data[2] |= (sd->sensor_addr & 0x02) ? 0x5000 : 0x0; - data[3] = 0x1d20 | ((sd->sensor_addr & 0x02) ? 0x0001 : 0x0); - data[3] |= (sd->sensor_addr & 0x01) ? 0x0054 : 0x0; - - w9968cf_write_fsb(sd, data); - - data[0] = 0x8208 | ((reg & 0x80) ? 0x0015 : 0x0); - data[0] |= (reg & 0x40) ? 0x0540 : 0x0; - data[0] |= (reg & 0x20) ? 0x5000 : 0x0; - data[1] = 0x0820 | ((reg & 0x20) ? 0x0001 : 0x0); - data[1] |= (reg & 0x10) ? 0x0054 : 0x0; - data[1] |= (reg & 0x08) ? 0x1500 : 0x0; - data[1] |= (reg & 0x04) ? 0x4000 : 0x0; - data[2] = 0x2082 | ((reg & 0x04) ? 0x0005 : 0x0); - data[2] |= (reg & 0x02) ? 0x0150 : 0x0; - data[2] |= (reg & 0x01) ? 0x5400 : 0x0; - data[3] = 0x001d; - - w9968cf_write_fsb(sd, data); - - data[0] = 0x8208 | ((value & 0x80) ? 0x0015 : 0x0); - data[0] |= (value & 0x40) ? 0x0540 : 0x0; - data[0] |= (value & 0x20) ? 0x5000 : 0x0; - data[1] = 0x0820 | ((value & 0x20) ? 0x0001 : 0x0); - data[1] |= (value & 0x10) ? 0x0054 : 0x0; - data[1] |= (value & 0x08) ? 0x1500 : 0x0; - data[1] |= (value & 0x04) ? 0x4000 : 0x0; - data[2] = 0x2082 | ((value & 0x04) ? 0x0005 : 0x0); - data[2] |= (value & 0x02) ? 0x0150 : 0x0; - data[2] |= (value & 0x01) ? 0x5400 : 0x0; - data[3] = 0xfe1d; - - w9968cf_write_fsb(sd, data); - - PDEBUG(D_USBO, "i2c 0x%02x -> [0x%02x]", value, reg); -} - -/* SMBus protocol: S Addr Wr [A] Subaddr [A] P S Addr+1 Rd [A] [Value] NA P */ -static int w9968cf_i2c_r(struct sd *sd, u8 reg) -{ - int ret = 0; - u8 value; - - /* Fast serial bus data control disable */ - w9968cf_write_sb(sd, 0x0013); /* don't change ! */ - - w9968cf_smbus_start(sd); - w9968cf_smbus_write_byte(sd, sd->sensor_addr); - w9968cf_smbus_read_ack(sd); - w9968cf_smbus_write_byte(sd, reg); - w9968cf_smbus_read_ack(sd); - w9968cf_smbus_stop(sd); - w9968cf_smbus_start(sd); - w9968cf_smbus_write_byte(sd, sd->sensor_addr + 1); - w9968cf_smbus_read_ack(sd); - w9968cf_smbus_read_byte(sd, &value); - /* signal we don't want to read anymore, the v4l1 driver used to - send an ack here which is very wrong! (and then fixed - the issues this gave by retrying reads) */ - w9968cf_smbus_write_nack(sd); - w9968cf_smbus_stop(sd); - - /* Fast serial bus data control re-enable */ - w9968cf_write_sb(sd, 0x0030); - - if (sd->gspca_dev.usb_err >= 0) { - ret = value; - PDEBUG(D_USBI, "i2c [0x%02X] -> 0x%02X", reg, value); - } else - PDEBUG(D_ERR, "i2c read [0x%02x] failed", reg); - - return ret; -} - -/*-------------------------------------------------------------------------- - Turn on the LED on some webcams. A beep should be heard too. - Return 0 on success, a negative number otherwise. - --------------------------------------------------------------------------*/ -static void w9968cf_configure(struct sd *sd) -{ - reg_w(sd, 0x00, 0xff00); /* power-down */ - reg_w(sd, 0x00, 0xbf17); /* reset everything */ - reg_w(sd, 0x00, 0xbf10); /* normal operation */ - reg_w(sd, 0x01, 0x0010); /* serial bus, SDS high */ - reg_w(sd, 0x01, 0x0000); /* serial bus, SDS low */ - reg_w(sd, 0x01, 0x0010); /* ..high 'beep-beep' */ - reg_w(sd, 0x01, 0x0030); /* Set sda scl to FSB mode */ - - sd->stopped = 1; -} - -static void w9968cf_init(struct sd *sd) -{ - unsigned long hw_bufsize = sd->sif ? (352 * 288 * 2) : (640 * 480 * 2), - y0 = 0x0000, - u0 = y0 + hw_bufsize / 2, - v0 = u0 + hw_bufsize / 4, - y1 = v0 + hw_bufsize / 4, - u1 = y1 + hw_bufsize / 2, - v1 = u1 + hw_bufsize / 4; - - reg_w(sd, 0x00, 0xff00); /* power off */ - reg_w(sd, 0x00, 0xbf10); /* power on */ - - reg_w(sd, 0x03, 0x405d); /* DRAM timings */ - reg_w(sd, 0x04, 0x0030); /* SDRAM timings */ - - reg_w(sd, 0x20, y0 & 0xffff); /* Y buf.0, low */ - reg_w(sd, 0x21, y0 >> 16); /* Y buf.0, high */ - reg_w(sd, 0x24, u0 & 0xffff); /* U buf.0, low */ - reg_w(sd, 0x25, u0 >> 16); /* U buf.0, high */ - reg_w(sd, 0x28, v0 & 0xffff); /* V buf.0, low */ - reg_w(sd, 0x29, v0 >> 16); /* V buf.0, high */ - - reg_w(sd, 0x22, y1 & 0xffff); /* Y buf.1, low */ - reg_w(sd, 0x23, y1 >> 16); /* Y buf.1, high */ - reg_w(sd, 0x26, u1 & 0xffff); /* U buf.1, low */ - reg_w(sd, 0x27, u1 >> 16); /* U buf.1, high */ - reg_w(sd, 0x2a, v1 & 0xffff); /* V buf.1, low */ - reg_w(sd, 0x2b, v1 >> 16); /* V buf.1, high */ - - reg_w(sd, 0x32, y1 & 0xffff); /* JPEG buf 0 low */ - reg_w(sd, 0x33, y1 >> 16); /* JPEG buf 0 high */ - - reg_w(sd, 0x34, y1 & 0xffff); /* JPEG buf 1 low */ - reg_w(sd, 0x35, y1 >> 16); /* JPEG bug 1 high */ - - reg_w(sd, 0x36, 0x0000);/* JPEG restart interval */ - reg_w(sd, 0x37, 0x0804);/*JPEG VLE FIFO threshold*/ - reg_w(sd, 0x38, 0x0000);/* disable hw up-scaling */ - reg_w(sd, 0x3f, 0x0000); /* JPEG/MCTL test data */ -} - -static void w9968cf_set_crop_window(struct sd *sd) -{ - int start_cropx, start_cropy, x, y, fw, fh, cw, ch, - max_width, max_height; - - if (sd->sif) { - max_width = 352; - max_height = 288; - } else { - max_width = 640; - max_height = 480; - } - - if (sd->sensor == SEN_OV7620) { - /* - * Sigh, this is dependend on the clock / framerate changes - * made by the frequency control, sick. - * - * Note we cannot use v4l2_ctrl_g_ctrl here, as we get called - * from ov519.c:setfreq() with the ctrl lock held! - */ - if (sd->freq->val == 1) { - start_cropx = 277; - start_cropy = 37; - } else { - start_cropx = 105; - start_cropy = 37; - } - } else { - start_cropx = 320; - start_cropy = 35; - } - - /* Work around to avoid FP arithmetics */ - #define SC(x) ((x) << 10) - - /* Scaling factors */ - fw = SC(sd->gspca_dev.width) / max_width; - fh = SC(sd->gspca_dev.height) / max_height; - - cw = (fw >= fh) ? max_width : SC(sd->gspca_dev.width) / fh; - ch = (fw >= fh) ? SC(sd->gspca_dev.height) / fw : max_height; - - sd->sensor_width = max_width; - sd->sensor_height = max_height; - - x = (max_width - cw) / 2; - y = (max_height - ch) / 2; - - reg_w(sd, 0x10, start_cropx + x); - reg_w(sd, 0x11, start_cropy + y); - reg_w(sd, 0x12, start_cropx + x + cw); - reg_w(sd, 0x13, start_cropy + y + ch); -} - -static void w9968cf_mode_init_regs(struct sd *sd) -{ - int val, vs_polarity, hs_polarity; - - w9968cf_set_crop_window(sd); - - reg_w(sd, 0x14, sd->gspca_dev.width); - reg_w(sd, 0x15, sd->gspca_dev.height); - - /* JPEG width & height */ - reg_w(sd, 0x30, sd->gspca_dev.width); - reg_w(sd, 0x31, sd->gspca_dev.height); - - /* Y & UV frame buffer strides (in WORD) */ - if (w9968cf_vga_mode[sd->gspca_dev.curr_mode].pixelformat == - V4L2_PIX_FMT_JPEG) { - reg_w(sd, 0x2c, sd->gspca_dev.width / 2); - reg_w(sd, 0x2d, sd->gspca_dev.width / 4); - } else - reg_w(sd, 0x2c, sd->gspca_dev.width); - - reg_w(sd, 0x00, 0xbf17); /* reset everything */ - reg_w(sd, 0x00, 0xbf10); /* normal operation */ - - /* Transfer size in WORDS (for UYVY format only) */ - val = sd->gspca_dev.width * sd->gspca_dev.height; - reg_w(sd, 0x3d, val & 0xffff); /* low bits */ - reg_w(sd, 0x3e, val >> 16); /* high bits */ - - if (w9968cf_vga_mode[sd->gspca_dev.curr_mode].pixelformat == - V4L2_PIX_FMT_JPEG) { - /* We may get called multiple times (usb isoc bw negotiat.) */ - jpeg_define(sd->jpeg_hdr, sd->gspca_dev.height, - sd->gspca_dev.width, 0x22); /* JPEG 420 */ - jpeg_set_qual(sd->jpeg_hdr, v4l2_ctrl_g_ctrl(sd->jpegqual)); - w9968cf_upload_quantizationtables(sd); - v4l2_ctrl_grab(sd->jpegqual, true); - } - - /* Video Capture Control Register */ - if (sd->sensor == SEN_OV7620) { - /* Seems to work around a bug in the image sensor */ - vs_polarity = 1; - hs_polarity = 1; - } else { - vs_polarity = 1; - hs_polarity = 0; - } - - val = (vs_polarity << 12) | (hs_polarity << 11); - - /* NOTE: We may not have enough memory to do double buffering while - doing compression (amount of memory differs per model cam). - So we use the second image buffer also as jpeg stream buffer - (see w9968cf_init), and disable double buffering. */ - if (w9968cf_vga_mode[sd->gspca_dev.curr_mode].pixelformat == - V4L2_PIX_FMT_JPEG) { - /* val |= 0x0002; YUV422P */ - val |= 0x0003; /* YUV420P */ - } else - val |= 0x0080; /* Enable HW double buffering */ - - /* val |= 0x0020; enable clamping */ - /* val |= 0x0008; enable (1-2-1) filter */ - /* val |= 0x000c; enable (2-3-6-3-2) filter */ - - val |= 0x8000; /* capt. enable */ - - reg_w(sd, 0x16, val); - - sd->gspca_dev.empty_packet = 0; -} - -static void w9968cf_stop0(struct sd *sd) -{ - v4l2_ctrl_grab(sd->jpegqual, false); - reg_w(sd, 0x39, 0x0000); /* disable JPEG encoder */ - reg_w(sd, 0x16, 0x0000); /* stop video capture */ -} - -/* The w9968cf docs say that a 0 sized packet means EOF (and also SOF - for the next frame). This seems to simply not be true when operating - in JPEG mode, in this case there may be empty packets within the - frame. So in JPEG mode use the JPEG SOI marker to detect SOF. - - Note to make things even more interesting the w9968cf sends *PLANAR* jpeg, - to be precise it sends: SOI, SOF, DRI, SOS, Y-data, SOS, U-data, SOS, - V-data, EOI. */ -static void w9968cf_pkt_scan(struct gspca_dev *gspca_dev, - u8 *data, /* isoc packet */ - int len) /* iso packet length */ -{ - struct sd *sd = (struct sd *) gspca_dev; - - if (w9968cf_vga_mode[gspca_dev->curr_mode].pixelformat == - V4L2_PIX_FMT_JPEG) { - if (len >= 2 && - data[0] == 0xff && - data[1] == 0xd8) { - gspca_frame_add(gspca_dev, LAST_PACKET, - NULL, 0); - gspca_frame_add(gspca_dev, FIRST_PACKET, - sd->jpeg_hdr, JPEG_HDR_SZ); - /* Strip the ff d8, our own header (which adds - huffman and quantization tables) already has this */ - len -= 2; - data += 2; - } - } else { - /* In UYVY mode an empty packet signals EOF */ - if (gspca_dev->empty_packet) { - gspca_frame_add(gspca_dev, LAST_PACKET, - NULL, 0); - gspca_frame_add(gspca_dev, FIRST_PACKET, - NULL, 0); - gspca_dev->empty_packet = 0; - } - } - gspca_frame_add(gspca_dev, INTER_PACKET, data, len); -} |