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path: root/drivers/media/video/gspca/pac7302.c
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Diffstat (limited to 'drivers/media/video/gspca/pac7302.c')
-rw-r--r--drivers/media/video/gspca/pac7302.c1272
1 files changed, 1272 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/pac7302.c b/drivers/media/video/gspca/pac7302.c
new file mode 100644
index 000000000000..74acceea8094
--- /dev/null
+++ b/drivers/media/video/gspca/pac7302.c
@@ -0,0 +1,1272 @@
+/*
+ * Pixart PAC7302 library
+ * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
+ *
+ * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
+ *
+ * Separated from Pixart PAC7311 library by Márton Németh <nm127@freemail.hu>
+ *
+ * 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
+ */
+
+/* Some documentation about various registers as determined by trial and error.
+ When the register addresses differ between the 7202 and the 7311 the 2
+ different addresses are written as 7302addr/7311addr, when one of the 2
+ addresses is a - sign that register description is not valid for the
+ matching IC.
+
+ Register page 1:
+
+ Address Description
+ -/0x08 Unknown compressor related, must always be 8 except when not
+ in 640x480 resolution and page 4 reg 2 <= 3 then set it to 9 !
+ -/0x1b Auto white balance related, bit 0 is AWB enable (inverted)
+ bits 345 seem to toggle per color gains on/off (inverted)
+ 0x78 Global control, bit 6 controls the LED (inverted)
+ -/0x80 JPEG compression ratio ? Best not touched
+
+ Register page 3/4:
+
+ Address Description
+ 0x02 Clock divider 2-63, fps =~ 60 / val. Must be a multiple of 3 on
+ the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?
+ -/0x0f Master gain 1-245, low value = high gain
+ 0x10/- Master gain 0-31
+ -/0x10 Another gain 0-15, limited influence (1-2x gain I guess)
+ 0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused
+ -/0x27 Seems to toggle various gains on / off, Setting bit 7 seems to
+ completely disable the analog amplification block. Set to 0x68
+ for max gain, 0x14 for minimal gain.
+
+ The registers are accessed in the following functions:
+
+ Page | Register | Function
+ -----+------------+---------------------------------------------------
+ 0 | 0x0f..0x20 | setcolors()
+ 0 | 0xa2..0xab | setbrightcont()
+ 0 | 0xc5 | setredbalance()
+ 0 | 0xc6 | setwhitebalance()
+ 0 | 0xc7 | setbluebalance()
+ 0 | 0xdc | setbrightcont(), setcolors()
+ 3 | 0x02 | setexposure()
+ 3 | 0x10 | setgain()
+ 3 | 0x11 | setcolors(), setgain(), setexposure(), sethvflip()
+ 3 | 0x21 | sethvflip()
+*/
+
+#define MODULE_NAME "pac7302"
+
+#include <media/v4l2-chip-ident.h>
+#include "gspca.h"
+
+MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li");
+MODULE_DESCRIPTION("Pixart PAC7302");
+MODULE_LICENSE("GPL");
+
+/* specific webcam descriptor for pac7302 */
+struct sd {
+ struct gspca_dev gspca_dev; /* !! must be the first item */
+
+ unsigned char brightness;
+ unsigned char contrast;
+ unsigned char colors;
+ unsigned char white_balance;
+ unsigned char red_balance;
+ unsigned char blue_balance;
+ unsigned char gain;
+ unsigned char exposure;
+ unsigned char autogain;
+ __u8 hflip;
+ __u8 vflip;
+
+ u8 sof_read;
+ u8 autogain_ignore_frames;
+
+ atomic_t avg_lum;
+};
+
+/* 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_setcolors(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setwhitebalance(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getwhitebalance(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setredbalance(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getredbalance(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setbluebalance(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getbluebalance(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
+
+static struct ctrl sd_ctrls[] = {
+/* This control is pac7302 only */
+ {
+ {
+ .id = V4L2_CID_BRIGHTNESS,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Brightness",
+ .minimum = 0,
+#define BRIGHTNESS_MAX 0x20
+ .maximum = BRIGHTNESS_MAX,
+ .step = 1,
+#define BRIGHTNESS_DEF 0x10
+ .default_value = BRIGHTNESS_DEF,
+ },
+ .set = sd_setbrightness,
+ .get = sd_getbrightness,
+ },
+/* This control is for both the 7302 and the 7311 */
+ {
+ {
+ .id = V4L2_CID_CONTRAST,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Contrast",
+ .minimum = 0,
+#define CONTRAST_MAX 255
+ .maximum = CONTRAST_MAX,
+ .step = 1,
+#define CONTRAST_DEF 127
+ .default_value = CONTRAST_DEF,
+ },
+ .set = sd_setcontrast,
+ .get = sd_getcontrast,
+ },
+/* This control is pac7302 only */
+ {
+ {
+ .id = V4L2_CID_SATURATION,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Saturation",
+ .minimum = 0,
+#define COLOR_MAX 255
+ .maximum = COLOR_MAX,
+ .step = 1,
+#define COLOR_DEF 127
+ .default_value = COLOR_DEF,
+ },
+ .set = sd_setcolors,
+ .get = sd_getcolors,
+ },
+ {
+ {
+ .id = V4L2_CID_WHITE_BALANCE_TEMPERATURE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "White Balance",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 1,
+#define WHITEBALANCE_DEF 4
+ .default_value = WHITEBALANCE_DEF,
+ },
+ .set = sd_setwhitebalance,
+ .get = sd_getwhitebalance,
+ },
+ {
+ {
+ .id = V4L2_CID_RED_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Red",
+ .minimum = 0,
+ .maximum = 3,
+ .step = 1,
+#define REDBALANCE_DEF 1
+ .default_value = REDBALANCE_DEF,
+ },
+ .set = sd_setredbalance,
+ .get = sd_getredbalance,
+ },
+ {
+ {
+ .id = V4L2_CID_BLUE_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Blue",
+ .minimum = 0,
+ .maximum = 3,
+ .step = 1,
+#define BLUEBALANCE_DEF 1
+ .default_value = BLUEBALANCE_DEF,
+ },
+ .set = sd_setbluebalance,
+ .get = sd_getbluebalance,
+ },
+/* All controls below are for both the 7302 and the 7311 */
+ {
+ {
+ .id = V4L2_CID_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Gain",
+ .minimum = 0,
+#define GAIN_MAX 255
+ .maximum = GAIN_MAX,
+ .step = 1,
+#define GAIN_DEF 127
+#define GAIN_KNEE 255 /* Gain seems to cause little noise on the pac73xx */
+ .default_value = GAIN_DEF,
+ },
+ .set = sd_setgain,
+ .get = sd_getgain,
+ },
+ {
+ {
+ .id = V4L2_CID_EXPOSURE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Exposure",
+ .minimum = 0,
+#define EXPOSURE_MAX 255
+ .maximum = EXPOSURE_MAX,
+ .step = 1,
+#define EXPOSURE_DEF 16 /* 32 ms / 30 fps */
+#define EXPOSURE_KNEE 50 /* 100 ms / 10 fps */
+ .default_value = EXPOSURE_DEF,
+ },
+ .set = sd_setexposure,
+ .get = sd_getexposure,
+ },
+ {
+ {
+ .id = V4L2_CID_AUTOGAIN,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Auto Gain",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+#define AUTOGAIN_DEF 1
+ .default_value = AUTOGAIN_DEF,
+ },
+ .set = sd_setautogain,
+ .get = sd_getautogain,
+ },
+ {
+ {
+ .id = V4L2_CID_HFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Mirror",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+#define HFLIP_DEF 0
+ .default_value = HFLIP_DEF,
+ },
+ .set = sd_sethflip,
+ .get = sd_gethflip,
+ },
+ {
+ {
+ .id = V4L2_CID_VFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Vflip",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+#define VFLIP_DEF 0
+ .default_value = VFLIP_DEF,
+ },
+ .set = sd_setvflip,
+ .get = sd_getvflip,
+ },
+};
+
+static const struct v4l2_pix_format vga_mode[] = {
+ {640, 480, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
+ .bytesperline = 640,
+ .sizeimage = 640 * 480 * 3 / 8 + 590,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .priv = 0},
+};
+
+#define LOAD_PAGE3 255
+#define LOAD_PAGE4 254
+#define END_OF_SEQUENCE 0
+
+/* pac 7302 */
+static const __u8 init_7302[] = {
+/* index,value */
+ 0xff, 0x01, /* page 1 */
+ 0x78, 0x00, /* deactivate */
+ 0xff, 0x01,
+ 0x78, 0x40, /* led off */
+};
+static const __u8 start_7302[] = {
+/* index, len, [value]* */
+ 0xff, 1, 0x00, /* page 0 */
+ 0x00, 12, 0x01, 0x40, 0x40, 0x40, 0x01, 0xe0, 0x02, 0x80,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x0d, 24, 0x03, 0x01, 0x00, 0xb5, 0x07, 0xcb, 0x00, 0x00,
+ 0x07, 0xc8, 0x00, 0xea, 0x07, 0xcf, 0x07, 0xf7,
+ 0x07, 0x7e, 0x01, 0x0b, 0x00, 0x00, 0x00, 0x11,
+ 0x26, 2, 0xaa, 0xaa,
+ 0x2e, 1, 0x31,
+ 0x38, 1, 0x01,
+ 0x3a, 3, 0x14, 0xff, 0x5a,
+ 0x43, 11, 0x00, 0x0a, 0x18, 0x11, 0x01, 0x2c, 0x88, 0x11,
+ 0x00, 0x54, 0x11,
+ 0x55, 1, 0x00,
+ 0x62, 4, 0x10, 0x1e, 0x1e, 0x18,
+ 0x6b, 1, 0x00,
+ 0x6e, 3, 0x08, 0x06, 0x00,
+ 0x72, 3, 0x00, 0xff, 0x00,
+ 0x7d, 23, 0x01, 0x01, 0x58, 0x46, 0x50, 0x3c, 0x50, 0x3c,
+ 0x54, 0x46, 0x54, 0x56, 0x52, 0x50, 0x52, 0x50,
+ 0x56, 0x64, 0xa4, 0x00, 0xda, 0x00, 0x00,
+ 0xa2, 10, 0x22, 0x2c, 0x3c, 0x54, 0x69, 0x7c, 0x9c, 0xb9,
+ 0xd2, 0xeb,
+ 0xaf, 1, 0x02,
+ 0xb5, 2, 0x08, 0x08,
+ 0xb8, 2, 0x08, 0x88,
+ 0xc4, 4, 0xae, 0x01, 0x04, 0x01,
+ 0xcc, 1, 0x00,
+ 0xd1, 11, 0x01, 0x30, 0x49, 0x5e, 0x6f, 0x7f, 0x8e, 0xa9,
+ 0xc1, 0xd7, 0xec,
+ 0xdc, 1, 0x01,
+ 0xff, 1, 0x01, /* page 1 */
+ 0x12, 3, 0x02, 0x00, 0x01,
+ 0x3e, 2, 0x00, 0x00,
+ 0x76, 5, 0x01, 0x20, 0x40, 0x00, 0xf2,
+ 0x7c, 1, 0x00,
+ 0x7f, 10, 0x4b, 0x0f, 0x01, 0x2c, 0x02, 0x58, 0x03, 0x20,
+ 0x02, 0x00,
+ 0x96, 5, 0x01, 0x10, 0x04, 0x01, 0x04,
+ 0xc8, 14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00,
+ 0x07, 0x00, 0x01, 0x07, 0x04, 0x01,
+ 0xd8, 1, 0x01,
+ 0xdb, 2, 0x00, 0x01,
+ 0xde, 7, 0x00, 0x01, 0x04, 0x04, 0x00, 0x00, 0x00,
+ 0xe6, 4, 0x00, 0x00, 0x00, 0x01,
+ 0xeb, 1, 0x00,
+ 0xff, 1, 0x02, /* page 2 */
+ 0x22, 1, 0x00,
+ 0xff, 1, 0x03, /* page 3 */
+ 0, LOAD_PAGE3, /* load the page 3 */
+ 0x11, 1, 0x01,
+ 0xff, 1, 0x02, /* page 2 */
+ 0x13, 1, 0x00,
+ 0x22, 4, 0x1f, 0xa4, 0xf0, 0x96,
+ 0x27, 2, 0x14, 0x0c,
+ 0x2a, 5, 0xc8, 0x00, 0x18, 0x12, 0x22,
+ 0x64, 8, 0x00, 0x00, 0xf0, 0x01, 0x14, 0x44, 0x44, 0x44,
+ 0x6e, 1, 0x08,
+ 0xff, 1, 0x01, /* page 1 */
+ 0x78, 1, 0x00,
+ 0, END_OF_SEQUENCE /* end of sequence */
+};
+
+#define SKIP 0xaa
+/* page 3 - the value SKIP says skip the index - see reg_w_page() */
+static const __u8 page3_7302[] = {
+ 0x90, 0x40, 0x03, 0x50, 0xc2, 0x01, 0x14, 0x16,
+ 0x14, 0x12, 0x00, 0x00, 0x00, 0x02, 0x33, 0x00,
+ 0x0f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x47, 0x01, 0xb3, 0x01, 0x00,
+ 0x00, 0x08, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x21,
+ 0x00, 0x00, 0x00, 0x54, 0xf4, 0x02, 0x52, 0x54,
+ 0xa4, 0xb8, 0xe0, 0x2a, 0xf6, 0x00, 0x00, 0x00,
+ 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0xfc, 0x00, 0xf2, 0x1f, 0x04, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0xc0, 0xc0, 0x10, 0x00, 0x00,
+ 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x40, 0xff, 0x03, 0x19, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xc8, 0xc8,
+ 0xc8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50,
+ 0x08, 0x10, 0x24, 0x40, 0x00, 0x00, 0x00, 0x00,
+ 0x01, 0x00, 0x02, 0x47, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x02, 0xfa, 0x00, 0x64, 0x5a, 0x28, 0x00,
+ 0x00
+};
+
+static int reg_w_buf(struct gspca_dev *gspca_dev,
+ __u8 index,
+ const char *buffer, int len)
+{
+ int ret;
+
+ memcpy(gspca_dev->usb_buf, buffer, len);
+ ret = usb_control_msg(gspca_dev->dev,
+ usb_sndctrlpipe(gspca_dev->dev, 0),
+ 1, /* request */
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, /* value */
+ index, gspca_dev->usb_buf, len,
+ 500);
+ if (ret < 0)
+ PDEBUG(D_ERR, "reg_w_buf(): "
+ "Failed to write registers to index 0x%x, error %i",
+ index, ret);
+ return ret;
+}
+
+
+static int reg_w(struct gspca_dev *gspca_dev,
+ __u8 index,
+ __u8 value)
+{
+ int ret;
+
+ gspca_dev->usb_buf[0] = value;
+ ret = usb_control_msg(gspca_dev->dev,
+ usb_sndctrlpipe(gspca_dev->dev, 0),
+ 0, /* request */
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, index, gspca_dev->usb_buf, 1,
+ 500);
+ if (ret < 0)
+ PDEBUG(D_ERR, "reg_w(): "
+ "Failed to write register to index 0x%x, value 0x%x, error %i",
+ index, value, ret);
+ return ret;
+}
+
+static int reg_w_seq(struct gspca_dev *gspca_dev,
+ const __u8 *seq, int len)
+{
+ int ret = 0;
+ while (--len >= 0) {
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, seq[0], seq[1]);
+ seq += 2;
+ }
+ return ret;
+}
+
+/* load the beginning of a page */
+static int reg_w_page(struct gspca_dev *gspca_dev,
+ const __u8 *page, int len)
+{
+ int index;
+ int ret = 0;
+
+ for (index = 0; index < len; index++) {
+ if (page[index] == SKIP) /* skip this index */
+ continue;
+ gspca_dev->usb_buf[0] = page[index];
+ ret = usb_control_msg(gspca_dev->dev,
+ usb_sndctrlpipe(gspca_dev->dev, 0),
+ 0, /* request */
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, index, gspca_dev->usb_buf, 1,
+ 500);
+ if (ret < 0) {
+ PDEBUG(D_ERR, "reg_w_page(): "
+ "Failed to write register to index 0x%x, "
+ "value 0x%x, error %i",
+ index, page[index], ret);
+ break;
+ }
+ }
+ return ret;
+}
+
+/* output a variable sequence */
+static int reg_w_var(struct gspca_dev *gspca_dev,
+ const __u8 *seq,
+ const __u8 *page3, unsigned int page3_len,
+ const __u8 *page4, unsigned int page4_len)
+{
+ int index, len;
+ int ret = 0;
+
+ for (;;) {
+ index = *seq++;
+ len = *seq++;
+ switch (len) {
+ case END_OF_SEQUENCE:
+ return ret;
+ case LOAD_PAGE4:
+ ret = reg_w_page(gspca_dev, page4, page4_len);
+ break;
+ case LOAD_PAGE3:
+ ret = reg_w_page(gspca_dev, page3, page3_len);
+ break;
+ default:
+ if (len > USB_BUF_SZ) {
+ PDEBUG(D_ERR|D_STREAM,
+ "Incorrect variable sequence");
+ return -EINVAL;
+ }
+ while (len > 0) {
+ if (len < 8) {
+ ret = reg_w_buf(gspca_dev,
+ index, seq, len);
+ if (ret < 0)
+ return ret;
+ seq += len;
+ break;
+ }
+ ret = reg_w_buf(gspca_dev, index, seq, 8);
+ seq += 8;
+ index += 8;
+ len -= 8;
+ }
+ }
+ if (ret < 0)
+ return ret;
+ }
+ /* not reached */
+}
+
+/* this function is called at probe time for pac7302 */
+static int sd_config(struct gspca_dev *gspca_dev,
+ const struct usb_device_id *id)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct cam *cam;
+
+ cam = &gspca_dev->cam;
+
+ PDEBUG(D_CONF, "Find Sensor PAC7302");
+ cam->cam_mode = vga_mode; /* only 640x480 */
+ cam->nmodes = ARRAY_SIZE(vga_mode);
+
+ sd->brightness = BRIGHTNESS_DEF;
+ sd->contrast = CONTRAST_DEF;
+ sd->colors = COLOR_DEF;
+ sd->white_balance = WHITEBALANCE_DEF;
+ sd->red_balance = REDBALANCE_DEF;
+ sd->blue_balance = BLUEBALANCE_DEF;
+ sd->gain = GAIN_DEF;
+ sd->exposure = EXPOSURE_DEF;
+ sd->autogain = AUTOGAIN_DEF;
+ sd->hflip = HFLIP_DEF;
+ sd->vflip = VFLIP_DEF;
+ return 0;
+}
+
+/* This function is used by pac7302 only */
+static int setbrightcont(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int i, v;
+ int ret;
+ static const __u8 max[10] =
+ {0x29, 0x33, 0x42, 0x5a, 0x6e, 0x80, 0x9f, 0xbb,
+ 0xd4, 0xec};
+ static const __u8 delta[10] =
+ {0x35, 0x33, 0x33, 0x2f, 0x2a, 0x25, 0x1e, 0x17,
+ 0x11, 0x0b};
+
+ ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ for (i = 0; i < 10; i++) {
+ v = max[i];
+ v += (sd->brightness - BRIGHTNESS_MAX)
+ * 150 / BRIGHTNESS_MAX; /* 200 ? */
+ v -= delta[i] * sd->contrast / CONTRAST_MAX;
+ if (v < 0)
+ v = 0;
+ else if (v > 0xff)
+ v = 0xff;
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xa2 + i, v);
+ }
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xdc, 0x01);
+ return ret;
+}
+
+/* This function is used by pac7302 only */
+static int setcolors(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int i, v;
+ int ret;
+ static const int a[9] =
+ {217, -212, 0, -101, 170, -67, -38, -315, 355};
+ static const int b[9] =
+ {19, 106, 0, 19, 106, 1, 19, 106, 1};
+
+ ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x11, 0x01);
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ for (i = 0; i < 9; i++) {
+ v = a[i] * sd->colors / COLOR_MAX + b[i];
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x0f + 2 * i, (v >> 8) & 0x07);
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x0f + 2 * i + 1, v);
+ }
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xdc, 0x01);
+ PDEBUG(D_CONF|D_STREAM, "color: %i", sd->colors);
+ return ret;
+}
+
+static int setwhitebalance(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int ret;
+
+ ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xc6, sd->white_balance);
+
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xdc, 0x01);
+ PDEBUG(D_CONF|D_STREAM, "white_balance: %i", sd->white_balance);
+ return ret;
+}
+
+static int setredbalance(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int ret;
+
+ ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xc5, sd->red_balance);
+
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xdc, 0x01);
+ PDEBUG(D_CONF|D_STREAM, "red_balance: %i", sd->red_balance);
+ return ret;
+}
+
+static int setbluebalance(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int ret;
+
+ ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xc7, sd->blue_balance);
+
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xdc, 0x01);
+ PDEBUG(D_CONF|D_STREAM, "blue_balance: %i", sd->blue_balance);
+ return ret;
+}
+
+static int setgain(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int ret;
+
+ ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x10, sd->gain >> 3);
+
+ /* load registers to sensor (Bit 0, auto clear) */
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x11, 0x01);
+ return ret;
+}
+
+static int setexposure(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int ret;
+ __u8 reg;
+
+ /* register 2 of frame 3/4 contains the clock divider configuring the
+ no fps according to the formula: 60 / reg. sd->exposure is the
+ desired exposure time in ms. */
+ reg = 120 * sd->exposure / 1000;
+ if (reg < 2)
+ reg = 2;
+ else if (reg > 63)
+ reg = 63;
+
+ /* On the pac7302 reg2 MUST be a multiple of 3, so round it to
+ the nearest multiple of 3, except when between 6 and 12? */
+ if (reg < 6 || reg > 12)
+ reg = ((reg + 1) / 3) * 3;
+ ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x02, reg);
+
+ /* load registers to sensor (Bit 0, auto clear) */
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x11, 0x01);
+ return ret;
+}
+
+static int sethvflip(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int ret;
+ __u8 data;
+
+ ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
+ data = (sd->hflip ? 0x08 : 0x00) | (sd->vflip ? 0x04 : 0x00);
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x21, data);
+ /* load registers to sensor (Bit 0, auto clear) */
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x11, 0x01);
+ return ret;
+}
+
+/* this function is called at probe and resume time for pac7302 */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+ return reg_w_seq(gspca_dev, init_7302, sizeof(init_7302)/2);
+}
+
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int ret = 0;
+
+ sd->sof_read = 0;
+
+ ret = reg_w_var(gspca_dev, start_7302,
+ page3_7302, sizeof(page3_7302),
+ NULL, 0);
+ if (0 <= ret)
+ ret = setbrightcont(gspca_dev);
+ if (0 <= ret)
+ ret = setcolors(gspca_dev);
+ if (0 <= ret)
+ ret = setwhitebalance(gspca_dev);
+ if (0 <= ret)
+ ret = setredbalance(gspca_dev);
+ if (0 <= ret)
+ ret = setbluebalance(gspca_dev);
+ if (0 <= ret)
+ ret = setgain(gspca_dev);
+ if (0 <= ret)
+ ret = setexposure(gspca_dev);
+ if (0 <= ret)
+ ret = sethvflip(gspca_dev);
+
+ /* only resolution 640x480 is supported for pac7302 */
+
+ sd->sof_read = 0;
+ sd->autogain_ignore_frames = 0;
+ atomic_set(&sd->avg_lum, -1);
+
+ /* start stream */
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xff, 0x01);
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x78, 0x01);
+
+ return ret;
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+ int ret;
+
+ /* stop stream */
+ ret = reg_w(gspca_dev, 0xff, 0x01);
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x78, 0x00);
+}
+
+/* called on streamoff with alt 0 and on disconnect for pac7302 */
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+ int ret;
+
+ if (!gspca_dev->present)
+ return;
+ ret = reg_w(gspca_dev, 0xff, 0x01);
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0x78, 0x40);
+}
+
+/* Include pac common sof detection functions */
+#include "pac_common.h"
+
+static void do_autogain(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int avg_lum = atomic_read(&sd->avg_lum);
+ int desired_lum, deadzone;
+
+ if (avg_lum == -1)
+ return;
+
+ desired_lum = 270 + sd->brightness * 4;
+ /* Hack hack, with the 7202 the first exposure step is
+ pretty large, so if we're about to make the first
+ exposure increase make the deadzone large to avoid
+ oscilating */
+ if (desired_lum > avg_lum && sd->gain == GAIN_DEF &&
+ sd->exposure > EXPOSURE_DEF &&
+ sd->exposure < 42)
+ deadzone = 90;
+ else
+ deadzone = 30;
+
+ if (sd->autogain_ignore_frames > 0)
+ sd->autogain_ignore_frames--;
+ else if (gspca_auto_gain_n_exposure(gspca_dev, avg_lum, desired_lum,
+ deadzone, GAIN_KNEE, EXPOSURE_KNEE))
+ sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
+}
+
+/* JPEG header, part 1 */
+static const unsigned char pac_jpeg_header1[] = {
+ 0xff, 0xd8, /* SOI: Start of Image */
+
+ 0xff, 0xc0, /* SOF0: Start of Frame (Baseline DCT) */
+ 0x00, 0x11, /* length = 17 bytes (including this length field) */
+ 0x08 /* Precision: 8 */
+ /* 2 bytes is placed here: number of image lines */
+ /* 2 bytes is placed here: samples per line */
+};
+
+/* JPEG header, continued */
+static const unsigned char pac_jpeg_header2[] = {
+ 0x03, /* Number of image components: 3 */
+ 0x01, 0x21, 0x00, /* ID=1, Subsampling 1x1, Quantization table: 0 */
+ 0x02, 0x11, 0x01, /* ID=2, Subsampling 2x1, Quantization table: 1 */
+ 0x03, 0x11, 0x01, /* ID=3, Subsampling 2x1, Quantization table: 1 */
+
+ 0xff, 0xda, /* SOS: Start Of Scan */
+ 0x00, 0x0c, /* length = 12 bytes (including this length field) */
+ 0x03, /* number of components: 3 */
+ 0x01, 0x00, /* selector 1, table 0x00 */
+ 0x02, 0x11, /* selector 2, table 0x11 */
+ 0x03, 0x11, /* selector 3, table 0x11 */
+ 0x00, 0x3f, /* Spectral selection: 0 .. 63 */
+ 0x00 /* Successive approximation: 0 */
+};
+
+static void pac_start_frame(struct gspca_dev *gspca_dev,
+ struct gspca_frame *frame,
+ __u16 lines, __u16 samples_per_line)
+{
+ unsigned char tmpbuf[4];
+
+ gspca_frame_add(gspca_dev, FIRST_PACKET,
+ pac_jpeg_header1, sizeof(pac_jpeg_header1));
+
+ tmpbuf[0] = lines >> 8;
+ tmpbuf[1] = lines & 0xff;
+ tmpbuf[2] = samples_per_line >> 8;
+ tmpbuf[3] = samples_per_line & 0xff;
+
+ gspca_frame_add(gspca_dev, INTER_PACKET,
+ tmpbuf, sizeof(tmpbuf));
+ gspca_frame_add(gspca_dev, INTER_PACKET,
+ pac_jpeg_header2, sizeof(pac_jpeg_header2));
+}
+
+/* this function is run at interrupt level */
+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;
+ struct gspca_frame *frame;
+ unsigned char *sof;
+
+ sof = pac_find_sof(&sd->sof_read, data, len);
+ if (sof) {
+ int n, lum_offset, footer_length;
+
+ frame = gspca_get_i_frame(gspca_dev);
+ if (frame == NULL) {
+ gspca_dev->last_packet_type = DISCARD_PACKET;
+ return;
+ }
+
+ /* 6 bytes after the FF D9 EOF marker a number of lumination
+ bytes are send corresponding to different parts of the
+ image, the 14th and 15th byte after the EOF seem to
+ correspond to the center of the image */
+ lum_offset = 61 + sizeof pac_sof_marker;
+ footer_length = 74;
+
+ /* Finish decoding current frame */
+ n = (sof - data) - (footer_length + sizeof pac_sof_marker);
+ if (n < 0) {
+ frame->data_end += n;
+ n = 0;
+ }
+ gspca_frame_add(gspca_dev, INTER_PACKET,
+ data, n);
+ if (gspca_dev->last_packet_type != DISCARD_PACKET &&
+ frame->data_end[-2] == 0xff &&
+ frame->data_end[-1] == 0xd9)
+ gspca_frame_add(gspca_dev, LAST_PACKET,
+ NULL, 0);
+
+ n = sof - data;
+ len -= n;
+ data = sof;
+
+ /* Get average lumination */
+ if (gspca_dev->last_packet_type == LAST_PACKET &&
+ n >= lum_offset)
+ atomic_set(&sd->avg_lum, data[-lum_offset] +
+ data[-lum_offset + 1]);
+ else
+ atomic_set(&sd->avg_lum, -1);
+
+ /* Start the new frame with the jpeg header */
+ /* The PAC7302 has the image rotated 90 degrees */
+ pac_start_frame(gspca_dev, frame,
+ gspca_dev->width, gspca_dev->height);
+ }
+ gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
+}
+
+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)
+ setbrightcont(gspca_dev);
+ return 0;
+}
+
+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) {
+ setbrightcont(gspca_dev);
+ }
+ return 0;
+}
+
+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_setcolors(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->colors = val;
+ if (gspca_dev->streaming)
+ setcolors(gspca_dev);
+ return 0;
+}
+
+static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->colors;
+ return 0;
+}
+
+static int sd_setwhitebalance(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int ret = 0;
+
+ sd->white_balance = val;
+ if (gspca_dev->streaming)
+ ret = setwhitebalance(gspca_dev);
+ if (0 <= ret)
+ ret = 0;
+ return ret;
+}
+
+static int sd_getwhitebalance(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->white_balance;
+ return 0;
+}
+
+static int sd_setredbalance(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int ret = 0;
+
+ sd->red_balance = val;
+ if (gspca_dev->streaming)
+ ret = setredbalance(gspca_dev);
+ if (0 <= ret)
+ ret = 0;
+ return ret;
+}
+
+static int sd_getredbalance(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->red_balance;
+ return 0;
+}
+
+static int sd_setbluebalance(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int ret = 0;
+
+ sd->blue_balance = val;
+ if (gspca_dev->streaming)
+ ret = setbluebalance(gspca_dev);
+ if (0 <= ret)
+ ret = 0;
+ return ret;
+}
+
+static int sd_getbluebalance(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->blue_balance;
+ return 0;
+}
+
+static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->gain = val;
+ if (gspca_dev->streaming)
+ setgain(gspca_dev);
+ return 0;
+}
+
+static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->gain;
+ return 0;
+}
+
+static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->exposure = val;
+ if (gspca_dev->streaming)
+ setexposure(gspca_dev);
+ return 0;
+}
+
+static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->exposure;
+ return 0;
+}
+
+static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->autogain = val;
+ /* when switching to autogain set defaults to make sure
+ we are on a valid point of the autogain gain /
+ exposure knee graph, and give this change time to
+ take effect before doing autogain. */
+ if (sd->autogain) {
+ sd->exposure = EXPOSURE_DEF;
+ sd->gain = GAIN_DEF;
+ if (gspca_dev->streaming) {
+ sd->autogain_ignore_frames =
+ PAC_AUTOGAIN_IGNORE_FRAMES;
+ setexposure(gspca_dev);
+ setgain(gspca_dev);
+ }
+ }
+
+ return 0;
+}
+
+static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->autogain;
+ return 0;
+}
+
+static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->hflip = val;
+ if (gspca_dev->streaming)
+ sethvflip(gspca_dev);
+ return 0;
+}
+
+static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->hflip;
+ return 0;
+}
+
+static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->vflip = val;
+ if (gspca_dev->streaming)
+ sethvflip(gspca_dev);
+ return 0;
+}
+
+static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->vflip;
+ return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int sd_dbg_s_register(struct gspca_dev *gspca_dev,
+ struct v4l2_dbg_register *reg)
+{
+ int ret = -EINVAL;
+ __u8 index;
+ __u8 value;
+
+ /* reg->reg: bit0..15: reserved for register index (wIndex is 16bit
+ long on the USB bus)
+ */
+ if (reg->match.type == V4L2_CHIP_MATCH_HOST &&
+ reg->match.addr == 0 &&
+ (reg->reg < 0x000000ff) &&
+ (reg->val <= 0x000000ff)
+ ) {
+ /* Currently writing to page 0 is only supported. */
+ /* reg_w() only supports 8bit index */
+ index = reg->reg & 0x000000ff;
+ value = reg->val & 0x000000ff;
+
+ /* Note that there shall be no access to other page
+ by any other function between the page swith and
+ the actual register write */
+ ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, index, value);
+
+ if (0 <= ret)
+ ret = reg_w(gspca_dev, 0xdc, 0x01);
+ }
+ return ret;
+}
+
+static int sd_chip_ident(struct gspca_dev *gspca_dev,
+ struct v4l2_dbg_chip_ident *chip)
+{
+ int ret = -EINVAL;
+
+ if (chip->match.type == V4L2_CHIP_MATCH_HOST &&
+ chip->match.addr == 0) {
+ chip->revision = 0;
+ chip->ident = V4L2_IDENT_UNKNOWN;
+ ret = 0;
+ }
+ return ret;
+}
+#endif
+
+/* sub-driver description for pac7302 */
+static struct sd_desc sd_desc = {
+ .name = MODULE_NAME,
+ .ctrls = sd_ctrls,
+ .nctrls = ARRAY_SIZE(sd_ctrls),
+ .config = sd_config,
+ .init = sd_init,
+ .start = sd_start,
+ .stopN = sd_stopN,
+ .stop0 = sd_stop0,
+ .pkt_scan = sd_pkt_scan,
+ .dq_callback = do_autogain,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .set_register = sd_dbg_s_register,
+ .get_chip_ident = sd_chip_ident,
+#endif
+};
+
+/* -- module initialisation -- */
+static __devinitdata struct usb_device_id device_table[] = {
+ {USB_DEVICE(0x06f8, 0x3009)},
+ {USB_DEVICE(0x093a, 0x2620)},
+ {USB_DEVICE(0x093a, 0x2621)},
+ {USB_DEVICE(0x093a, 0x2622)},
+ {USB_DEVICE(0x093a, 0x2624)},
+ {USB_DEVICE(0x093a, 0x2626)},
+ {USB_DEVICE(0x093a, 0x2628)},
+ {USB_DEVICE(0x093a, 0x2629)},
+ {USB_DEVICE(0x093a, 0x262a)},
+ {USB_DEVICE(0x093a, 0x262c)},
+ {}
+};
+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,
+#endif
+};
+
+/* -- module insert / remove -- */
+static int __init sd_mod_init(void)
+{
+ int ret;
+ ret = usb_register(&sd_driver);
+ if (ret < 0)
+ return ret;
+ PDEBUG(D_PROBE, "registered");
+ return 0;
+}
+static void __exit sd_mod_exit(void)
+{
+ usb_deregister(&sd_driver);
+ PDEBUG(D_PROBE, "deregistered");
+}
+
+module_init(sd_mod_init);
+module_exit(sd_mod_exit);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-25 23:35:21 +0300