--- /dev/null
+/*
+ * Pixart PAC7302 driver
+ *
+ * Copyright (C) 2008-2012 Jean-Francois Moine <http://moinejf.free.fr>
+ * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
+ *
+ * Separated from Pixart PAC7311 library by Márton Németh
+ * Camera button input handling by Márton Németh <nm127@freemail.hu>
+ * Copyright (C) 2009-2010 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.
+ *
+ * Register page 0:
+ *
+ * Address Description
+ * 0x01 Red balance control
+ * 0x02 Green balance control
+ * 0x03 Blue balance control
+ * The Windows driver uses a quadratic approach to map
+ * the settable values (0-200) on register values:
+ * min=0x20, default=0x40, max=0x80
+ * 0x0f-0x20 Color and saturation control
+ * 0xa2-0xab Brightness, contrast and gamma control
+ * 0xb6 Sharpness control (bits 0-4)
+ *
+ * Register page 1:
+ *
+ * Address Description
+ * 0x78 Global control, bit 6 controls the LED (inverted)
+ * 0x80 Compression balance, 2 interesting settings:
+ * 0x0f Default
+ * 0x50 Values >= this switch the camera to a lower compression,
+ * using the same table for both luminance and chrominance.
+ * This gives a sharper picture. Only usable when running
+ * at < 15 fps! Note currently the driver does not use this
+ * as the quality gain is small and the generated JPG-s are
+ * only understood by v4l-utils >= 0.8.9
+ *
+ * Register page 3:
+ *
+ * Address Description
+ * 0x02 Clock divider 3-63, fps = 90 / val. Must be a multiple of 3 on
+ * the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?
+ * 0x03 Variable framerate ctrl reg2==3: 0 -> ~30 fps, 255 -> ~22fps
+ * 0x04 Another var framerate ctrl reg2==3, reg3==0: 0 -> ~30 fps,
+ * 63 -> ~27 fps, the 2 msb's must always be 1 !!
+ * 0x05 Another var framerate ctrl reg2==3, reg3==0, reg4==0xc0:
+ * 1 -> ~30 fps, 2 -> ~20 fps
+ * 0x0e Exposure bits 0-7, 0-448, 0 = use full frame time
+ * 0x0f Exposure bit 8, 0-448, 448 = no exposure at all
+ * 0x10 Gain 0-31
+ * 0x12 Another gain 0-31, unlike 0x10 this one seems to start with an
+ * amplification value of 1 rather then 0 at its lowest setting
+ * 0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused
+ * 0x80 Another framerate control, best left at 1, moving it from 1 to
+ * 2 causes the framerate to become 3/4th of what it was, and
+ * also seems to cause pixel averaging, resulting in an effective
+ * resolution of 320x240 and thus a much blockier image
+ *
+ * The registers are accessed in the following functions:
+ *
+ * Page | Register | Function
+ * -----+------------+---------------------------------------------------
+ * 0 | 0x01 | setredbalance()
+ * 0 | 0x03 | setbluebalance()
+ * 0 | 0x0f..0x20 | setcolors()
+ * 0 | 0xa2..0xab | setbrightcont()
+ * 0 | 0xb6 | setsharpness()
+ * 0 | 0xc6 | setwhitebalance()
+ * 0 | 0xdc | setbrightcont(), setcolors()
+ * 3 | 0x02 | setexposure()
+ * 3 | 0x10, 0x12 | setgain()
+ * 3 | 0x11 | setcolors(), setgain(), setexposure(), sethvflip()
+ * 3 | 0x21 | sethvflip()
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/input.h>
+#include "gspca.h"
+/* Include pac common sof detection functions */
+#include "pac_common.h"
+
+#define PAC7302_RGB_BALANCE_MIN 0
+#define PAC7302_RGB_BALANCE_MAX 200
+#define PAC7302_RGB_BALANCE_DEFAULT 100
+#define PAC7302_GAIN_DEFAULT 15
+#define PAC7302_GAIN_KNEE 42
+#define PAC7302_EXPOSURE_DEFAULT 66 /* 33 ms / 30 fps */
+#define PAC7302_EXPOSURE_KNEE 133 /* 66 ms / 15 fps */
+
+MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>, "
+ "Thomas Kaiser thomas@kaiser-linux.li");
+MODULE_DESCRIPTION("Pixart PAC7302");
+MODULE_LICENSE("GPL");
+
+struct sd {
+ struct gspca_dev gspca_dev; /* !! must be the first item */
+
+ struct { /* brightness / contrast cluster */
+ struct v4l2_ctrl *brightness;
+ struct v4l2_ctrl *contrast;
+ };
+ struct v4l2_ctrl *saturation;
+ struct v4l2_ctrl *white_balance;
+ struct v4l2_ctrl *red_balance;
+ struct v4l2_ctrl *blue_balance;
+ struct { /* flip cluster */
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *vflip;
+ };
+ struct v4l2_ctrl *sharpness;
+ u8 flags;
+#define FL_HFLIP 0x01 /* mirrored by default */
+#define FL_VFLIP 0x02 /* vertical flipped by default */
+
+ u8 sof_read;
+ s8 autogain_ignore_frames;
+
+ atomic_t avg_lum;
+};
+
+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,
+ },
+};
+
+#define LOAD_PAGE3 255
+#define END_OF_SEQUENCE 0
+
+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, 0x00, 0xc0, 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,
+ SKIP, 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 void reg_w_buf(struct gspca_dev *gspca_dev,
+ u8 index,
+ const u8 *buffer, int len)
+{
+ int ret;
+
+ if (gspca_dev->usb_err < 0)
+ return;
+ memcpy(gspca_dev->usb_buf, buffer, len);
+ 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, /* value */
+ index, gspca_dev->usb_buf, len,
+ 500);
+ if (ret < 0) {
+ pr_err("reg_w_buf failed i: %02x error %d\n",
+ index, ret);
+ gspca_dev->usb_err = ret;
+ }
+}
+
+
+static void reg_w(struct gspca_dev *gspca_dev,
+ u8 index,
+ u8 value)
+{
+ int ret;
+
+ if (gspca_dev->usb_err < 0)
+ return;
+ 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) {
+ pr_err("reg_w() failed i: %02x v: %02x error %d\n",
+ index, value, ret);
+ gspca_dev->usb_err = ret;
+ }
+}
+
+static void reg_w_seq(struct gspca_dev *gspca_dev,
+ const u8 *seq, int len)
+{
+ while (--len >= 0) {
+ reg_w(gspca_dev, seq[0], seq[1]);
+ seq += 2;
+ }
+}
+
+/* load the beginning of a page */
+static void reg_w_page(struct gspca_dev *gspca_dev,
+ const u8 *page, int len)
+{
+ int index;
+ int ret = 0;
+
+ if (gspca_dev->usb_err < 0)
+ return;
+ 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) {
+ pr_err("reg_w_page() failed i: %02x v: %02x error %d\n",
+ index, page[index], ret);
+ gspca_dev->usb_err = ret;
+ break;
+ }
+ }
+}
+
+/* output a variable sequence */
+static void reg_w_var(struct gspca_dev *gspca_dev,
+ const u8 *seq,
+ const u8 *page3, unsigned int page3_len)
+{
+ int index, len;
+
+ for (;;) {
+ index = *seq++;
+ len = *seq++;
+ switch (len) {
+ case END_OF_SEQUENCE:
+ return;
+ case LOAD_PAGE3:
+ reg_w_page(gspca_dev, page3, page3_len);
+ break;
+ default:
+ if (len > USB_BUF_SZ) {
+ PERR("Incorrect variable sequence");
+ return;
+ }
+ while (len > 0) {
+ if (len < 8) {
+ reg_w_buf(gspca_dev,
+ index, seq, len);
+ seq += len;
+ break;
+ }
+ reg_w_buf(gspca_dev, index, seq, 8);
+ seq += 8;
+ index += 8;
+ len -= 8;
+ }
+ }
+ }
+ /* 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;
+
+ cam->cam_mode = vga_mode; /* only 640x480 */
+ cam->nmodes = ARRAY_SIZE(vga_mode);
+
+ sd->flags = id->driver_info;
+ return 0;
+}
+
+static void setbrightcont(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int i, v;
+ 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};
+
+ reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ for (i = 0; i < 10; i++) {
+ v = max[i];
+ v += (sd->brightness->val - (s32)sd->brightness->maximum)
+ * 150 / (s32)sd->brightness->maximum; /* 200 ? */
+ v -= delta[i] * sd->contrast->val / (s32)sd->contrast->maximum;
+ if (v < 0)
+ v = 0;
+ else if (v > 0xff)
+ v = 0xff;
+ reg_w(gspca_dev, 0xa2 + i, v);
+ }
+ reg_w(gspca_dev, 0xdc, 0x01);
+}
+
+static void setcolors(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int i, v;
+ 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};
+
+ reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
+ reg_w(gspca_dev, 0x11, 0x01);
+ reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ for (i = 0; i < 9; i++) {
+ v = a[i] * sd->saturation->val / (s32)sd->saturation->maximum;
+ v += b[i];
+ reg_w(gspca_dev, 0x0f + 2 * i, (v >> 8) & 0x07);
+ reg_w(gspca_dev, 0x0f + 2 * i + 1, v);
+ }
+ reg_w(gspca_dev, 0xdc, 0x01);
+}
+
+static void setwhitebalance(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ reg_w(gspca_dev, 0xc6, sd->white_balance->val);
+
+ reg_w(gspca_dev, 0xdc, 0x01);
+}
+
+static u8 rgbbalance_ctrl_to_reg_value(s32 rgb_ctrl_val)
+{
+ const unsigned int k = 1000; /* precision factor */
+ unsigned int norm;
+
+ /* Normed value [0...k] */
+ norm = k * (rgb_ctrl_val - PAC7302_RGB_BALANCE_MIN)
+ / (PAC7302_RGB_BALANCE_MAX - PAC7302_RGB_BALANCE_MIN);
+ /* Qudratic apporach improves control at small (register) values: */
+ return 64 * norm * norm / (k*k) + 32 * norm / k + 32;
+ /* Y = 64*X*X + 32*X + 32
+ * => register values 0x20-0x80; Windows driver uses these limits */
+
+ /* NOTE: for full value range (0x00-0xff) use
+ * Y = 254*X*X + X
+ * => 254 * norm * norm / (k*k) + 1 * norm / k */
+}
+
+static void setredbalance(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ reg_w(gspca_dev, 0x01,
+ rgbbalance_ctrl_to_reg_value(sd->red_balance->val));
+
+ reg_w(gspca_dev, 0xdc, 0x01);
+}
+
+static void setbluebalance(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ reg_w(gspca_dev, 0x03,
+ rgbbalance_ctrl_to_reg_value(sd->blue_balance->val));
+
+ reg_w(gspca_dev, 0xdc, 0x01);
+}
+
+static void setgain(struct gspca_dev *gspca_dev)
+{
+ u8 reg10, reg12;
+
+ if (gspca_dev->gain->val < 32) {
+ reg10 = gspca_dev->gain->val;
+ reg12 = 0;
+ } else {
+ reg10 = 31;
+ reg12 = gspca_dev->gain->val - 31;
+ }
+
+ reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
+ reg_w(gspca_dev, 0x10, reg10);
+ reg_w(gspca_dev, 0x12, reg12);
+
+ /* load registers to sensor (Bit 0, auto clear) */
+ reg_w(gspca_dev, 0x11, 0x01);
+}
+
+static void setexposure(struct gspca_dev *gspca_dev)
+{
+ u8 clockdiv;
+ u16 exposure;
+
+ /*
+ * Register 2 of frame 3 contains the clock divider configuring the
+ * no fps according to the formula: 90 / reg. sd->exposure is the
+ * desired exposure time in 0.5 ms.
+ */
+ clockdiv = (90 * gspca_dev->exposure->val + 1999) / 2000;
+
+ /*
+ * Note clockdiv = 3 also works, but when running at 30 fps, depending
+ * on the scene being recorded, the camera switches to another
+ * quantization table for certain JPEG blocks, and we don't know how
+ * to decompress these blocks. So we cap the framerate at 15 fps.
+ */
+ if (clockdiv < 6)
+ clockdiv = 6;
+ else if (clockdiv > 63)
+ clockdiv = 63;
+
+ /*
+ * Register 2 MUST be a multiple of 3, except when between 6 and 12?
+ * Always round up, otherwise we cannot get the desired frametime
+ * using the partial frame time exposure control.
+ */
+ if (clockdiv < 6 || clockdiv > 12)
+ clockdiv = ((clockdiv + 2) / 3) * 3;
+
+ /*
+ * frame exposure time in ms = 1000 * clockdiv / 90 ->
+ * exposure = (sd->exposure / 2) * 448 / (1000 * clockdiv / 90)
+ */
+ exposure = (gspca_dev->exposure->val * 45 * 448) / (1000 * clockdiv);
+ /* 0 = use full frametime, 448 = no exposure, reverse it */
+ exposure = 448 - exposure;
+
+ reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
+ reg_w(gspca_dev, 0x02, clockdiv);
+ reg_w(gspca_dev, 0x0e, exposure & 0xff);
+ reg_w(gspca_dev, 0x0f, exposure >> 8);
+
+ /* load registers to sensor (Bit 0, auto clear) */
+ reg_w(gspca_dev, 0x11, 0x01);
+}
+
+static void sethvflip(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ u8 data, hflip, vflip;
+
+ hflip = sd->hflip->val;
+ if (sd->flags & FL_HFLIP)
+ hflip = !hflip;
+ vflip = sd->vflip->val;
+ if (sd->flags & FL_VFLIP)
+ vflip = !vflip;
+
+ reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
+ data = (hflip ? 0x08 : 0x00) | (vflip ? 0x04 : 0x00);
+ reg_w(gspca_dev, 0x21, data);
+
+ /* load registers to sensor (Bit 0, auto clear) */
+ reg_w(gspca_dev, 0x11, 0x01);
+}
+
+static void setsharpness(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ reg_w(gspca_dev, 0xb6, sd->sharpness->val);
+
+ reg_w(gspca_dev, 0xdc, 0x01);
+}
+
+/* this function is called at probe and resume time for pac7302 */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+ reg_w_seq(gspca_dev, init_7302, sizeof(init_7302)/2);
+ return gspca_dev->usb_err;
+}
+
+static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct gspca_dev *gspca_dev =
+ container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
+ struct sd *sd = (struct sd *)gspca_dev;
+
+ gspca_dev->usb_err = 0;
+
+ if (ctrl->id == V4L2_CID_AUTOGAIN && ctrl->is_new && ctrl->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. */
+ gspca_dev->exposure->val = PAC7302_EXPOSURE_DEFAULT;
+ gspca_dev->gain->val = PAC7302_GAIN_DEFAULT;
+ sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
+ }
+
+ if (!gspca_dev->streaming)
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ setbrightcont(gspca_dev);
+ break;
+ case V4L2_CID_SATURATION:
+ setcolors(gspca_dev);
+ break;
+ case V4L2_CID_WHITE_BALANCE_TEMPERATURE:
+ setwhitebalance(gspca_dev);
+ break;
+ case V4L2_CID_RED_BALANCE:
+ setredbalance(gspca_dev);
+ break;
+ case V4L2_CID_BLUE_BALANCE:
+ setbluebalance(gspca_dev);
+ break;
+ case V4L2_CID_AUTOGAIN:
+ if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val))
+ setexposure(gspca_dev);
+ if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val))
+ setgain(gspca_dev);
+ break;
+ case V4L2_CID_HFLIP:
+ sethvflip(gspca_dev);
+ break;
+ case V4L2_CID_SHARPNESS:
+ setsharpness(gspca_dev);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return gspca_dev->usb_err;
+}
+
+static const struct v4l2_ctrl_ops sd_ctrl_ops = {
+ .s_ctrl = sd_s_ctrl,
+};
+
+/* this function is called at probe time */
+static int sd_init_controls(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
+
+ gspca_dev->vdev.ctrl_handler = hdl;
+ v4l2_ctrl_handler_init(hdl, 12);
+
+ sd->brightness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 32, 1, 16);
+ sd->contrast = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_CONTRAST, 0, 255, 1, 127);
+
+ sd->saturation = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_SATURATION, 0, 255, 1, 127);
+ sd->white_balance = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_WHITE_BALANCE_TEMPERATURE,
+ 0, 255, 1, 55);
+ sd->red_balance = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_RED_BALANCE,
+ PAC7302_RGB_BALANCE_MIN,
+ PAC7302_RGB_BALANCE_MAX,
+ 1, PAC7302_RGB_BALANCE_DEFAULT);
+ sd->blue_balance = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_BLUE_BALANCE,
+ PAC7302_RGB_BALANCE_MIN,
+ PAC7302_RGB_BALANCE_MAX,
+ 1, PAC7302_RGB_BALANCE_DEFAULT);
+
+ gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
+ gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_EXPOSURE, 0, 1023, 1,
+ PAC7302_EXPOSURE_DEFAULT);
+ gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_GAIN, 0, 62, 1,
+ PAC7302_GAIN_DEFAULT);
+
+ sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+ sd->vflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+
+ sd->sharpness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_SHARPNESS, 0, 15, 1, 8);
+
+ if (hdl->error) {
+ pr_err("Could not initialize controls\n");
+ return hdl->error;
+ }
+
+ v4l2_ctrl_cluster(2, &sd->brightness);
+ v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false);
+ v4l2_ctrl_cluster(2, &sd->hflip);
+ return 0;
+}
+
+/* -- start the camera -- */
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ reg_w_var(gspca_dev, start_7302,
+ page3_7302, sizeof(page3_7302));
+
+ sd->sof_read = 0;
+ sd->autogain_ignore_frames = 0;
+ atomic_set(&sd->avg_lum, 270 + sd->brightness->val);
+
+ /* start stream */
+ reg_w(gspca_dev, 0xff, 0x01);
+ reg_w(gspca_dev, 0x78, 0x01);
+
+ return gspca_dev->usb_err;
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+
+ /* stop stream */
+ reg_w(gspca_dev, 0xff, 0x01);
+ 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)
+{
+ if (!gspca_dev->present)
+ return;
+ reg_w(gspca_dev, 0xff, 0x01);
+ reg_w(gspca_dev, 0x78, 0x40);
+}
+
+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;
+ const int deadzone = 30;
+
+ if (sd->autogain_ignore_frames < 0)
+ return;
+
+ if (sd->autogain_ignore_frames > 0) {
+ sd->autogain_ignore_frames--;
+ } else {
+ desired_lum = 270 + sd->brightness->val;
+
+ if (gspca_expo_autogain(gspca_dev, avg_lum, desired_lum,
+ deadzone, PAC7302_GAIN_KNEE,
+ PAC7302_EXPOSURE_KNEE))
+ sd->autogain_ignore_frames =
+ PAC_AUTOGAIN_IGNORE_FRAMES;
+ }
+}
+
+/* JPEG header */
+static const u8 jpeg_header[] = {
+ 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 */
+ 0x02, 0x80, /* height = 640 (image rotated) */
+ 0x01, 0xe0, /* width = 480 */
+ 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 */
+};
+
+/* 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;
+ u8 *image;
+ u8 *sof;
+
+ sof = pac_find_sof(gspca_dev, &sd->sof_read, data, len);
+ if (sof) {
+ int n, lum_offset, footer_length;
+
+ /*
+ * 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) {
+ gspca_dev->image_len += n;
+ n = 0;
+ } else {
+ gspca_frame_add(gspca_dev, INTER_PACKET, data, n);
+ }
+
+ image = gspca_dev->image;
+ if (image != NULL
+ && image[gspca_dev->image_len - 2] == 0xff
+ && image[gspca_dev->image_len - 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]);
+
+ /* Start the new frame with the jpeg header */
+ /* The PAC7302 has the image rotated 90 degrees */
+ gspca_frame_add(gspca_dev, FIRST_PACKET,
+ jpeg_header, sizeof jpeg_header);
+ }
+ gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int sd_dbg_s_register(struct gspca_dev *gspca_dev,
+ const struct v4l2_dbg_register *reg)
+{
+ u8 index;
+ u8 value;
+
+ /*
+ * reg->reg: bit0..15: reserved for register index (wIndex is 16bit
+ * long on the USB bus)
+ */
+ if (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;
+ value = reg->val;
+
+ /*
+ * Note that there shall be no access to other page
+ * by any other function between the page switch and
+ * the actual register write.
+ */
+ reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
+ reg_w(gspca_dev, index, value);
+
+ reg_w(gspca_dev, 0xdc, 0x01);
+ }
+ return gspca_dev->usb_err;
+}
+#endif
+
+#if IS_ENABLED(CONFIG_INPUT)
+static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
+ u8 *data, /* interrupt packet data */
+ int len) /* interrupt packet length */
+{
+ int ret = -EINVAL;
+ u8 data0, data1;
+
+ if (len == 2) {
+ data0 = data[0];
+ data1 = data[1];
+ if ((data0 == 0x00 && data1 == 0x11) ||
+ (data0 == 0x22 && data1 == 0x33) ||
+ (data0 == 0x44 && data1 == 0x55) ||
+ (data0 == 0x66 && data1 == 0x77) ||
+ (data0 == 0x88 && data1 == 0x99) ||
+ (data0 == 0xaa && data1 == 0xbb) ||
+ (data0 == 0xcc && data1 == 0xdd) ||
+ (data0 == 0xee && data1 == 0xff)) {
+ input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
+ input_sync(gspca_dev->input_dev);
+ input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
+ input_sync(gspca_dev->input_dev);
+ ret = 0;
+ }
+ }
+
+ return ret;
+}
+#endif
+
+/* sub-driver description for pac7302 */
+static const struct sd_desc sd_desc = {
+ .name = KBUILD_MODNAME,
+ .config = sd_config,
+ .init = sd_init,
+ .init_controls = sd_init_controls,
+ .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,
+#endif
+#if IS_ENABLED(CONFIG_INPUT)
+ .int_pkt_scan = sd_int_pkt_scan,
+#endif
+};
+
+/* -- module initialisation -- */
+static const struct usb_device_id device_table[] = {
+ {USB_DEVICE(0x06f8, 0x3009)},
+ {USB_DEVICE(0x06f8, 0x301b)},
+ {USB_DEVICE(0x093a, 0x2620)},
+ {USB_DEVICE(0x093a, 0x2621)},
+ {USB_DEVICE(0x093a, 0x2622), .driver_info = FL_VFLIP},
+ {USB_DEVICE(0x093a, 0x2623), .driver_info = FL_VFLIP},
+ {USB_DEVICE(0x093a, 0x2624), .driver_info = FL_VFLIP},
+ {USB_DEVICE(0x093a, 0x2625)},
+ {USB_DEVICE(0x093a, 0x2626)},
+ {USB_DEVICE(0x093a, 0x2627), .driver_info = FL_VFLIP},
+ {USB_DEVICE(0x093a, 0x2628)},
+ {USB_DEVICE(0x093a, 0x2629), .driver_info = FL_VFLIP},
+ {USB_DEVICE(0x093a, 0x262a)},
+ {USB_DEVICE(0x093a, 0x262c)},
+ {USB_DEVICE(0x145f, 0x013c)},
+ {USB_DEVICE(0x1ae7, 0x2001)}, /* SpeedLink Snappy Mic SL-6825-SBK */
+ {}
+};
+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 = KBUILD_MODNAME,
+ .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);
Code Review / kvmfornfv.git / blobdiff