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Diffstat (limited to 'drivers/media/usb/gspca/mr97310a.c')
-rw-r--r--drivers/media/usb/gspca/mr97310a.c1091
1 files changed, 1091 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/mr97310a.c b/drivers/media/usb/gspca/mr97310a.c
new file mode 100644
index 000000000000..8f4714df5990
--- /dev/null
+++ b/drivers/media/usb/gspca/mr97310a.c
@@ -0,0 +1,1091 @@
+/*
+ * Mars MR97310A library
+ *
+ * The original mr97310a driver, which supported the Aiptek Pencam VGA+, is
+ * Copyright (C) 2009 Kyle Guinn <elyk03@gmail.com>
+ *
+ * Support for the MR97310A cameras in addition to the Aiptek Pencam VGA+
+ * and for the routines for detecting and classifying these various cameras,
+ * is Copyright (C) 2009 Theodore Kilgore <kilgota@auburn.edu>
+ *
+ * Support for the control settings for the CIF cameras is
+ * Copyright (C) 2009 Hans de Goede <hdegoede@redhat.com> and
+ * Thomas Kaiser <thomas@kaiser-linux.li>
+ *
+ * Support for the control settings for the VGA cameras is
+ * Copyright (C) 2009 Theodore Kilgore <kilgota@auburn.edu>
+ *
+ * Several previously unsupported cameras are owned and have been tested by
+ * Hans de Goede <hdegoede@redhat.com> and
+ * Thomas Kaiser <thomas@kaiser-linux.li> and
+ * Theodore Kilgore <kilgota@auburn.edu> and
+ * Edmond Rodriguez <erodrig_97@yahoo.com> and
+ * Aurelien Jacobs <aurel@gnuage.org>
+ *
+ * The MR97311A support in gspca/mars.c has been helpful in understanding some
+ * of the registers in these cameras.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define MODULE_NAME "mr97310a"
+
+#include "gspca.h"
+
+#define CAM_TYPE_CIF 0
+#define CAM_TYPE_VGA 1
+
+#define MR97310A_BRIGHTNESS_DEFAULT 0
+
+#define MR97310A_EXPOSURE_MIN 0
+#define MR97310A_EXPOSURE_MAX 4095
+#define MR97310A_EXPOSURE_DEFAULT 1000
+
+#define MR97310A_GAIN_MIN 0
+#define MR97310A_GAIN_MAX 31
+#define MR97310A_GAIN_DEFAULT 25
+
+#define MR97310A_CONTRAST_MIN 0
+#define MR97310A_CONTRAST_MAX 31
+#define MR97310A_CONTRAST_DEFAULT 23
+
+#define MR97310A_CS_GAIN_MIN 0
+#define MR97310A_CS_GAIN_MAX 0x7ff
+#define MR97310A_CS_GAIN_DEFAULT 0x110
+
+#define MR97310A_CID_CLOCKDIV (V4L2_CTRL_CLASS_USER + 0x1000)
+#define MR97310A_MIN_CLOCKDIV_MIN 3
+#define MR97310A_MIN_CLOCKDIV_MAX 8
+#define MR97310A_MIN_CLOCKDIV_DEFAULT 3
+
+MODULE_AUTHOR("Kyle Guinn <elyk03@gmail.com>,"
+ "Theodore Kilgore <kilgota@auburn.edu>");
+MODULE_DESCRIPTION("GSPCA/Mars-Semi MR97310A USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+/* global parameters */
+static int force_sensor_type = -1;
+module_param(force_sensor_type, int, 0644);
+MODULE_PARM_DESC(force_sensor_type, "Force sensor type (-1 (auto), 0 or 1)");
+
+/* specific webcam descriptor */
+struct sd {
+ struct gspca_dev gspca_dev; /* !! must be the first item */
+ struct { /* exposure/min_clockdiv control cluster */
+ struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *min_clockdiv;
+ };
+ u8 sof_read;
+ u8 cam_type; /* 0 is CIF and 1 is VGA */
+ u8 sensor_type; /* We use 0 and 1 here, too. */
+ u8 do_lcd_stop;
+ u8 adj_colors;
+};
+
+struct sensor_w_data {
+ u8 reg;
+ u8 flags;
+ u8 data[16];
+ int len;
+};
+
+static void sd_stopN(struct gspca_dev *gspca_dev);
+
+static const struct v4l2_pix_format vga_mode[] = {
+ {160, 120, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
+ .bytesperline = 160,
+ .sizeimage = 160 * 120,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 4},
+ {176, 144, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
+ .bytesperline = 176,
+ .sizeimage = 176 * 144,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 3},
+ {320, 240, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
+ .bytesperline = 320,
+ .sizeimage = 320 * 240,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 2},
+ {352, 288, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
+ .bytesperline = 352,
+ .sizeimage = 352 * 288,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 1},
+ {640, 480, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
+ .bytesperline = 640,
+ .sizeimage = 640 * 480,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 0},
+};
+
+/* the bytes to write are in gspca_dev->usb_buf */
+static int mr_write(struct gspca_dev *gspca_dev, int len)
+{
+ int rc;
+
+ rc = usb_bulk_msg(gspca_dev->dev,
+ usb_sndbulkpipe(gspca_dev->dev, 4),
+ gspca_dev->usb_buf, len, NULL, 500);
+ if (rc < 0)
+ pr_err("reg write [%02x] error %d\n",
+ gspca_dev->usb_buf[0], rc);
+ return rc;
+}
+
+/* the bytes are read into gspca_dev->usb_buf */
+static int mr_read(struct gspca_dev *gspca_dev, int len)
+{
+ int rc;
+
+ rc = usb_bulk_msg(gspca_dev->dev,
+ usb_rcvbulkpipe(gspca_dev->dev, 3),
+ gspca_dev->usb_buf, len, NULL, 500);
+ if (rc < 0)
+ pr_err("reg read [%02x] error %d\n",
+ gspca_dev->usb_buf[0], rc);
+ return rc;
+}
+
+static int sensor_write_reg(struct gspca_dev *gspca_dev, u8 reg, u8 flags,
+ const u8 *data, int len)
+{
+ gspca_dev->usb_buf[0] = 0x1f;
+ gspca_dev->usb_buf[1] = flags;
+ gspca_dev->usb_buf[2] = reg;
+ memcpy(gspca_dev->usb_buf + 3, data, len);
+
+ return mr_write(gspca_dev, len + 3);
+}
+
+static int sensor_write_regs(struct gspca_dev *gspca_dev,
+ const struct sensor_w_data *data, int len)
+{
+ int i, rc;
+
+ for (i = 0; i < len; i++) {
+ rc = sensor_write_reg(gspca_dev, data[i].reg, data[i].flags,
+ data[i].data, data[i].len);
+ if (rc < 0)
+ return rc;
+ }
+
+ return 0;
+}
+
+static int sensor_write1(struct gspca_dev *gspca_dev, u8 reg, u8 data)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ u8 buf, confirm_reg;
+ int rc;
+
+ buf = data;
+ if (sd->cam_type == CAM_TYPE_CIF) {
+ rc = sensor_write_reg(gspca_dev, reg, 0x01, &buf, 1);
+ confirm_reg = sd->sensor_type ? 0x13 : 0x11;
+ } else {
+ rc = sensor_write_reg(gspca_dev, reg, 0x00, &buf, 1);
+ confirm_reg = 0x11;
+ }
+ if (rc < 0)
+ return rc;
+
+ buf = 0x01;
+ rc = sensor_write_reg(gspca_dev, confirm_reg, 0x00, &buf, 1);
+ if (rc < 0)
+ return rc;
+
+ return 0;
+}
+
+static int cam_get_response16(struct gspca_dev *gspca_dev, u8 reg, int verbose)
+{
+ int err_code;
+
+ gspca_dev->usb_buf[0] = reg;
+ err_code = mr_write(gspca_dev, 1);
+ if (err_code < 0)
+ return err_code;
+
+ err_code = mr_read(gspca_dev, 16);
+ if (err_code < 0)
+ return err_code;
+
+ if (verbose)
+ PDEBUG(D_PROBE, "Register: %02x reads %02x%02x%02x", reg,
+ gspca_dev->usb_buf[0],
+ gspca_dev->usb_buf[1],
+ gspca_dev->usb_buf[2]);
+
+ return 0;
+}
+
+static int zero_the_pointer(struct gspca_dev *gspca_dev)
+{
+ __u8 *data = gspca_dev->usb_buf;
+ int err_code;
+ u8 status = 0;
+ int tries = 0;
+
+ err_code = cam_get_response16(gspca_dev, 0x21, 0);
+ if (err_code < 0)
+ return err_code;
+
+ data[0] = 0x19;
+ data[1] = 0x51;
+ err_code = mr_write(gspca_dev, 2);
+ if (err_code < 0)
+ return err_code;
+
+ err_code = cam_get_response16(gspca_dev, 0x21, 0);
+ if (err_code < 0)
+ return err_code;
+
+ data[0] = 0x19;
+ data[1] = 0xba;
+ err_code = mr_write(gspca_dev, 2);
+ if (err_code < 0)
+ return err_code;
+
+ err_code = cam_get_response16(gspca_dev, 0x21, 0);
+ if (err_code < 0)
+ return err_code;
+
+ data[0] = 0x19;
+ data[1] = 0x00;
+ err_code = mr_write(gspca_dev, 2);
+ if (err_code < 0)
+ return err_code;
+
+ err_code = cam_get_response16(gspca_dev, 0x21, 0);
+ if (err_code < 0)
+ return err_code;
+
+ data[0] = 0x19;
+ data[1] = 0x00;
+ err_code = mr_write(gspca_dev, 2);
+ if (err_code < 0)
+ return err_code;
+
+ while (status != 0x0a && tries < 256) {
+ err_code = cam_get_response16(gspca_dev, 0x21, 0);
+ status = data[0];
+ tries++;
+ if (err_code < 0)
+ return err_code;
+ }
+ if (status != 0x0a)
+ PDEBUG(D_ERR, "status is %02x", status);
+
+ tries = 0;
+ while (tries < 4) {
+ data[0] = 0x19;
+ data[1] = 0x00;
+ err_code = mr_write(gspca_dev, 2);
+ if (err_code < 0)
+ return err_code;
+
+ err_code = cam_get_response16(gspca_dev, 0x21, 0);
+ status = data[0];
+ tries++;
+ if (err_code < 0)
+ return err_code;
+ }
+
+ data[0] = 0x19;
+ err_code = mr_write(gspca_dev, 1);
+ if (err_code < 0)
+ return err_code;
+
+ err_code = mr_read(gspca_dev, 16);
+ if (err_code < 0)
+ return err_code;
+
+ return 0;
+}
+
+static int stream_start(struct gspca_dev *gspca_dev)
+{
+ gspca_dev->usb_buf[0] = 0x01;
+ gspca_dev->usb_buf[1] = 0x01;
+ return mr_write(gspca_dev, 2);
+}
+
+static void stream_stop(struct gspca_dev *gspca_dev)
+{
+ gspca_dev->usb_buf[0] = 0x01;
+ gspca_dev->usb_buf[1] = 0x00;
+ if (mr_write(gspca_dev, 2) < 0)
+ PDEBUG(D_ERR, "Stream Stop failed");
+}
+
+static void lcd_stop(struct gspca_dev *gspca_dev)
+{
+ gspca_dev->usb_buf[0] = 0x19;
+ gspca_dev->usb_buf[1] = 0x54;
+ if (mr_write(gspca_dev, 2) < 0)
+ PDEBUG(D_ERR, "LCD Stop failed");
+}
+
+static int isoc_enable(struct gspca_dev *gspca_dev)
+{
+ gspca_dev->usb_buf[0] = 0x00;
+ gspca_dev->usb_buf[1] = 0x4d; /* ISOC transferring enable... */
+ return mr_write(gspca_dev, 2);
+}
+
+/* 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;
+ struct cam *cam;
+ int err_code;
+
+ cam = &gspca_dev->cam;
+ cam->cam_mode = vga_mode;
+ cam->nmodes = ARRAY_SIZE(vga_mode);
+ sd->do_lcd_stop = 0;
+
+ /* Several of the supported CIF cameras share the same USB ID but
+ * require different initializations and different control settings.
+ * The same is true of the VGA cameras. Therefore, we are forced
+ * to start the initialization process in order to determine which
+ * camera is present. Some of the supported cameras require the
+ * memory pointer to be set to 0 as the very first item of business
+ * or else they will not stream. So we do that immediately.
+ */
+ err_code = zero_the_pointer(gspca_dev);
+ if (err_code < 0)
+ return err_code;
+
+ err_code = stream_start(gspca_dev);
+ if (err_code < 0)
+ return err_code;
+
+ /* Now, the query for sensor type. */
+ err_code = cam_get_response16(gspca_dev, 0x07, 1);
+ if (err_code < 0)
+ return err_code;
+
+ if (id->idProduct == 0x0110 || id->idProduct == 0x010e) {
+ sd->cam_type = CAM_TYPE_CIF;
+ cam->nmodes--;
+ /*
+ * All but one of the known CIF cameras share the same USB ID,
+ * but two different init routines are in use, and the control
+ * settings are different, too. We need to detect which camera
+ * of the two known varieties is connected!
+ *
+ * A list of known CIF cameras follows. They all report either
+ * 0200 for type 0 or 0300 for type 1.
+ * If you have another to report, please do
+ *
+ * Name sd->sensor_type reported by
+ *
+ * Sakar 56379 Spy-shot 0 T. Kilgore
+ * Innovage 0 T. Kilgore
+ * Vivitar Mini 0 H. De Goede
+ * Vivitar Mini 0 E. Rodriguez
+ * Vivitar Mini 1 T. Kilgore
+ * Elta-Media 8212dc 1 T. Kaiser
+ * Philips dig. keych. 1 T. Kilgore
+ * Trust Spyc@m 100 1 A. Jacobs
+ */
+ switch (gspca_dev->usb_buf[0]) {
+ case 2:
+ sd->sensor_type = 0;
+ break;
+ case 3:
+ sd->sensor_type = 1;
+ break;
+ default:
+ pr_err("Unknown CIF Sensor id : %02x\n",
+ gspca_dev->usb_buf[1]);
+ return -ENODEV;
+ }
+ PDEBUG(D_PROBE, "MR97310A CIF camera detected, sensor: %d",
+ sd->sensor_type);
+ } else {
+ sd->cam_type = CAM_TYPE_VGA;
+
+ /*
+ * Here is a table of the responses to the query for sensor
+ * type, from the known MR97310A VGA cameras. Six different
+ * cameras of which five share the same USB ID.
+ *
+ * Name gspca_dev->usb_buf[] sd->sensor_type
+ * sd->do_lcd_stop
+ * Aiptek Pencam VGA+ 0300 0 1
+ * ION digital 0300 0 1
+ * Argus DC-1620 0450 1 0
+ * Argus QuickClix 0420 1 1
+ * Sakar 77379 Digital 0350 0 1
+ * Sakar 1638x CyberPix 0120 0 2
+ *
+ * Based upon these results, we assume default settings
+ * and then correct as necessary, as follows.
+ *
+ */
+
+ sd->sensor_type = 1;
+ sd->do_lcd_stop = 0;
+ sd->adj_colors = 0;
+ if (gspca_dev->usb_buf[0] == 0x01) {
+ sd->sensor_type = 2;
+ } else if ((gspca_dev->usb_buf[0] != 0x03) &&
+ (gspca_dev->usb_buf[0] != 0x04)) {
+ pr_err("Unknown VGA Sensor id Byte 0: %02x\n",
+ gspca_dev->usb_buf[0]);
+ pr_err("Defaults assumed, may not work\n");
+ pr_err("Please report this\n");
+ }
+ /* Sakar Digital color needs to be adjusted. */
+ if ((gspca_dev->usb_buf[0] == 0x03) &&
+ (gspca_dev->usb_buf[1] == 0x50))
+ sd->adj_colors = 1;
+ if (gspca_dev->usb_buf[0] == 0x04) {
+ sd->do_lcd_stop = 1;
+ switch (gspca_dev->usb_buf[1]) {
+ case 0x50:
+ sd->sensor_type = 0;
+ PDEBUG(D_PROBE, "sensor_type corrected to 0");
+ break;
+ case 0x20:
+ /* Nothing to do here. */
+ break;
+ default:
+ pr_err("Unknown VGA Sensor id Byte 1: %02x\n",
+ gspca_dev->usb_buf[1]);
+ pr_err("Defaults assumed, may not work\n");
+ pr_err("Please report this\n");
+ }
+ }
+ PDEBUG(D_PROBE, "MR97310A VGA camera detected, sensor: %d",
+ sd->sensor_type);
+ }
+ /* Stop streaming as we've started it only to probe the sensor type. */
+ sd_stopN(gspca_dev);
+
+ if (force_sensor_type != -1) {
+ sd->sensor_type = !!force_sensor_type;
+ PDEBUG(D_PROBE, "Forcing sensor type to: %d",
+ sd->sensor_type);
+ }
+
+ return 0;
+}
+
+/* this function is called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+ return 0;
+}
+
+static int start_cif_cam(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ __u8 *data = gspca_dev->usb_buf;
+ int err_code;
+ static const __u8 startup_string[] = {
+ 0x00,
+ 0x0d,
+ 0x01,
+ 0x00, /* Hsize/8 for 352 or 320 */
+ 0x00, /* Vsize/4 for 288 or 240 */
+ 0x13, /* or 0xbb, depends on sensor */
+ 0x00, /* Hstart, depends on res. */
+ 0x00, /* reserved ? */
+ 0x00, /* Vstart, depends on res. and sensor */
+ 0x50, /* 0x54 to get 176 or 160 */
+ 0xc0
+ };
+
+ /* Note: Some of the above descriptions guessed from MR97113A driver */
+
+ memcpy(data, startup_string, 11);
+ if (sd->sensor_type)
+ data[5] = 0xbb;
+
+ switch (gspca_dev->width) {
+ case 160:
+ data[9] |= 0x04; /* reg 8, 2:1 scale down from 320 */
+ /* fall thru */
+ case 320:
+ default:
+ data[3] = 0x28; /* reg 2, H size/8 */
+ data[4] = 0x3c; /* reg 3, V size/4 */
+ data[6] = 0x14; /* reg 5, H start */
+ data[8] = 0x1a + sd->sensor_type; /* reg 7, V start */
+ break;
+ case 176:
+ data[9] |= 0x04; /* reg 8, 2:1 scale down from 352 */
+ /* fall thru */
+ case 352:
+ data[3] = 0x2c; /* reg 2, H size/8 */
+ data[4] = 0x48; /* reg 3, V size/4 */
+ data[6] = 0x06; /* reg 5, H start */
+ data[8] = 0x06 - sd->sensor_type; /* reg 7, V start */
+ break;
+ }
+ err_code = mr_write(gspca_dev, 11);
+ if (err_code < 0)
+ return err_code;
+
+ if (!sd->sensor_type) {
+ static const struct sensor_w_data cif_sensor0_init_data[] = {
+ {0x02, 0x00, {0x03, 0x5a, 0xb5, 0x01,
+ 0x0f, 0x14, 0x0f, 0x10}, 8},
+ {0x0c, 0x00, {0x04, 0x01, 0x01, 0x00, 0x1f}, 5},
+ {0x12, 0x00, {0x07}, 1},
+ {0x1f, 0x00, {0x06}, 1},
+ {0x27, 0x00, {0x04}, 1},
+ {0x29, 0x00, {0x0c}, 1},
+ {0x40, 0x00, {0x40, 0x00, 0x04}, 3},
+ {0x50, 0x00, {0x60}, 1},
+ {0x60, 0x00, {0x06}, 1},
+ {0x6b, 0x00, {0x85, 0x85, 0xc8, 0xc8, 0xc8, 0xc8}, 6},
+ {0x72, 0x00, {0x1e, 0x56}, 2},
+ {0x75, 0x00, {0x58, 0x40, 0xa2, 0x02, 0x31, 0x02,
+ 0x31, 0x80, 0x00}, 9},
+ {0x11, 0x00, {0x01}, 1},
+ {0, 0, {0}, 0}
+ };
+ err_code = sensor_write_regs(gspca_dev, cif_sensor0_init_data,
+ ARRAY_SIZE(cif_sensor0_init_data));
+ } else { /* sd->sensor_type = 1 */
+ static const struct sensor_w_data cif_sensor1_init_data[] = {
+ /* Reg 3,4, 7,8 get set by the controls */
+ {0x02, 0x00, {0x10}, 1},
+ {0x05, 0x01, {0x22}, 1}, /* 5/6 also seen as 65h/32h */
+ {0x06, 0x01, {0x00}, 1},
+ {0x09, 0x02, {0x0e}, 1},
+ {0x0a, 0x02, {0x05}, 1},
+ {0x0b, 0x02, {0x05}, 1},
+ {0x0c, 0x02, {0x0f}, 1},
+ {0x0d, 0x02, {0x07}, 1},
+ {0x0e, 0x02, {0x0c}, 1},
+ {0x0f, 0x00, {0x00}, 1},
+ {0x10, 0x00, {0x06}, 1},
+ {0x11, 0x00, {0x07}, 1},
+ {0x12, 0x00, {0x00}, 1},
+ {0x13, 0x00, {0x01}, 1},
+ {0, 0, {0}, 0}
+ };
+ /* Without this command the cam won't work with USB-UHCI */
+ gspca_dev->usb_buf[0] = 0x0a;
+ gspca_dev->usb_buf[1] = 0x00;
+ err_code = mr_write(gspca_dev, 2);
+ if (err_code < 0)
+ return err_code;
+ err_code = sensor_write_regs(gspca_dev, cif_sensor1_init_data,
+ ARRAY_SIZE(cif_sensor1_init_data));
+ }
+ return err_code;
+}
+
+static int start_vga_cam(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ __u8 *data = gspca_dev->usb_buf;
+ int err_code;
+ static const __u8 startup_string[] =
+ {0x00, 0x0d, 0x01, 0x00, 0x00, 0x2b, 0x00, 0x00,
+ 0x00, 0x50, 0xc0};
+ /* What some of these mean is explained in start_cif_cam(), above */
+
+ memcpy(data, startup_string, 11);
+ if (!sd->sensor_type) {
+ data[5] = 0x00;
+ data[10] = 0x91;
+ }
+ if (sd->sensor_type == 2) {
+ data[5] = 0x00;
+ data[10] = 0x18;
+ }
+
+ switch (gspca_dev->width) {
+ case 160:
+ data[9] |= 0x0c; /* reg 8, 4:1 scale down */
+ /* fall thru */
+ case 320:
+ data[9] |= 0x04; /* reg 8, 2:1 scale down */
+ /* fall thru */
+ case 640:
+ default:
+ data[3] = 0x50; /* reg 2, H size/8 */
+ data[4] = 0x78; /* reg 3, V size/4 */
+ data[6] = 0x04; /* reg 5, H start */
+ data[8] = 0x03; /* reg 7, V start */
+ if (sd->sensor_type == 2) {
+ data[6] = 2;
+ data[8] = 1;
+ }
+ if (sd->do_lcd_stop)
+ data[8] = 0x04; /* Bayer tile shifted */
+ break;
+
+ case 176:
+ data[9] |= 0x04; /* reg 8, 2:1 scale down */
+ /* fall thru */
+ case 352:
+ data[3] = 0x2c; /* reg 2, H size */
+ data[4] = 0x48; /* reg 3, V size */
+ data[6] = 0x94; /* reg 5, H start */
+ data[8] = 0x63; /* reg 7, V start */
+ if (sd->do_lcd_stop)
+ data[8] = 0x64; /* Bayer tile shifted */
+ break;
+ }
+
+ err_code = mr_write(gspca_dev, 11);
+ if (err_code < 0)
+ return err_code;
+
+ if (!sd->sensor_type) {
+ static const struct sensor_w_data vga_sensor0_init_data[] = {
+ {0x01, 0x00, {0x0c, 0x00, 0x04}, 3},
+ {0x14, 0x00, {0x01, 0xe4, 0x02, 0x84}, 4},
+ {0x20, 0x00, {0x00, 0x80, 0x00, 0x08}, 4},
+ {0x25, 0x00, {0x03, 0xa9, 0x80}, 3},
+ {0x30, 0x00, {0x30, 0x18, 0x10, 0x18}, 4},
+ {0, 0, {0}, 0}
+ };
+ err_code = sensor_write_regs(gspca_dev, vga_sensor0_init_data,
+ ARRAY_SIZE(vga_sensor0_init_data));
+ } else if (sd->sensor_type == 1) {
+ static const struct sensor_w_data color_adj[] = {
+ {0x02, 0x00, {0x06, 0x59, 0x0c, 0x16, 0x00,
+ /* adjusted blue, green, red gain correct
+ too much blue from the Sakar Digital */
+ 0x05, 0x01, 0x04}, 8}
+ };
+
+ static const struct sensor_w_data color_no_adj[] = {
+ {0x02, 0x00, {0x06, 0x59, 0x0c, 0x16, 0x00,
+ /* default blue, green, red gain settings */
+ 0x07, 0x00, 0x01}, 8}
+ };
+
+ static const struct sensor_w_data vga_sensor1_init_data[] = {
+ {0x11, 0x04, {0x01}, 1},
+ {0x0a, 0x00, {0x00, 0x01, 0x00, 0x00, 0x01,
+ /* These settings may be better for some cameras */
+ /* {0x0a, 0x00, {0x01, 0x06, 0x00, 0x00, 0x01, */
+ 0x00, 0x0a}, 7},
+ {0x11, 0x04, {0x01}, 1},
+ {0x12, 0x00, {0x00, 0x63, 0x00, 0x70, 0x00, 0x00}, 6},
+ {0x11, 0x04, {0x01}, 1},
+ {0, 0, {0}, 0}
+ };
+
+ if (sd->adj_colors)
+ err_code = sensor_write_regs(gspca_dev, color_adj,
+ ARRAY_SIZE(color_adj));
+ else
+ err_code = sensor_write_regs(gspca_dev, color_no_adj,
+ ARRAY_SIZE(color_no_adj));
+
+ if (err_code < 0)
+ return err_code;
+
+ err_code = sensor_write_regs(gspca_dev, vga_sensor1_init_data,
+ ARRAY_SIZE(vga_sensor1_init_data));
+ } else { /* sensor type == 2 */
+ static const struct sensor_w_data vga_sensor2_init_data[] = {
+
+ {0x01, 0x00, {0x48}, 1},
+ {0x02, 0x00, {0x22}, 1},
+ /* Reg 3 msb and 4 is lsb of the exposure setting*/
+ {0x05, 0x00, {0x10}, 1},
+ {0x06, 0x00, {0x00}, 1},
+ {0x07, 0x00, {0x00}, 1},
+ {0x08, 0x00, {0x00}, 1},
+ {0x09, 0x00, {0x00}, 1},
+ /* The following are used in the gain control
+ * which is BTW completely borked in the OEM driver
+ * The values for each color go from 0 to 0x7ff
+ *{0x0a, 0x00, {0x01}, 1}, green1 gain msb
+ *{0x0b, 0x00, {0x10}, 1}, green1 gain lsb
+ *{0x0c, 0x00, {0x01}, 1}, red gain msb
+ *{0x0d, 0x00, {0x10}, 1}, red gain lsb
+ *{0x0e, 0x00, {0x01}, 1}, blue gain msb
+ *{0x0f, 0x00, {0x10}, 1}, blue gain lsb
+ *{0x10, 0x00, {0x01}, 1}, green2 gain msb
+ *{0x11, 0x00, {0x10}, 1}, green2 gain lsb
+ */
+ {0x12, 0x00, {0x00}, 1},
+ {0x13, 0x00, {0x04}, 1}, /* weird effect on colors */
+ {0x14, 0x00, {0x00}, 1},
+ {0x15, 0x00, {0x06}, 1},
+ {0x16, 0x00, {0x01}, 1},
+ {0x17, 0x00, {0xe2}, 1}, /* vertical alignment */
+ {0x18, 0x00, {0x02}, 1},
+ {0x19, 0x00, {0x82}, 1}, /* don't mess with */
+ {0x1a, 0x00, {0x00}, 1},
+ {0x1b, 0x00, {0x20}, 1},
+ /* {0x1c, 0x00, {0x17}, 1}, contrast control */
+ {0x1d, 0x00, {0x80}, 1}, /* moving causes a mess */
+ {0x1e, 0x00, {0x08}, 1}, /* moving jams the camera */
+ {0x1f, 0x00, {0x0c}, 1},
+ {0x20, 0x00, {0x00}, 1},
+ {0, 0, {0}, 0}
+ };
+ err_code = sensor_write_regs(gspca_dev, vga_sensor2_init_data,
+ ARRAY_SIZE(vga_sensor2_init_data));
+ }
+ return err_code;
+}
+
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int err_code;
+
+ sd->sof_read = 0;
+
+ /* Some of the VGA cameras require the memory pointer
+ * to be set to 0 again. We have been forced to start the
+ * stream in sd_config() to detect the hardware, and closed it.
+ * Thus, we need here to do a completely fresh and clean start. */
+ err_code = zero_the_pointer(gspca_dev);
+ if (err_code < 0)
+ return err_code;
+
+ err_code = stream_start(gspca_dev);
+ if (err_code < 0)
+ return err_code;
+
+ if (sd->cam_type == CAM_TYPE_CIF) {
+ err_code = start_cif_cam(gspca_dev);
+ } else {
+ err_code = start_vga_cam(gspca_dev);
+ }
+ if (err_code < 0)
+ return err_code;
+
+ return isoc_enable(gspca_dev);
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ stream_stop(gspca_dev);
+ /* Not all the cams need this, but even if not, probably a good idea */
+ zero_the_pointer(gspca_dev);
+ if (sd->do_lcd_stop)
+ lcd_stop(gspca_dev);
+}
+
+static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ u8 sign_reg = 7; /* This reg and the next one used on CIF cams. */
+ u8 value_reg = 8; /* VGA cams seem to use regs 0x0b and 0x0c */
+ static const u8 quick_clix_table[] =
+ /* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 */
+ { 0, 4, 8, 12, 1, 2, 3, 5, 6, 9, 7, 10, 13, 11, 14, 15};
+ if (sd->cam_type == CAM_TYPE_VGA) {
+ sign_reg += 4;
+ value_reg += 4;
+ }
+
+ /* Note register 7 is also seen as 0x8x or 0xCx in some dumps */
+ if (val > 0) {
+ sensor_write1(gspca_dev, sign_reg, 0x00);
+ } else {
+ sensor_write1(gspca_dev, sign_reg, 0x01);
+ val = 257 - val;
+ }
+ /* Use lookup table for funky Argus QuickClix brightness */
+ if (sd->do_lcd_stop)
+ val = quick_clix_table[val];
+
+ sensor_write1(gspca_dev, value_reg, val);
+}
+
+static void setexposure(struct gspca_dev *gspca_dev, s32 expo, s32 min_clockdiv)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int exposure = MR97310A_EXPOSURE_DEFAULT;
+ u8 buf[2];
+
+ if (sd->cam_type == CAM_TYPE_CIF && sd->sensor_type == 1) {
+ /* This cam does not like exposure settings < 300,
+ so scale 0 - 4095 to 300 - 4095 */
+ exposure = (expo * 9267) / 10000 + 300;
+ sensor_write1(gspca_dev, 3, exposure >> 4);
+ sensor_write1(gspca_dev, 4, exposure & 0x0f);
+ } else if (sd->sensor_type == 2) {
+ exposure = expo;
+ exposure >>= 3;
+ sensor_write1(gspca_dev, 3, exposure >> 8);
+ sensor_write1(gspca_dev, 4, exposure & 0xff);
+ } else {
+ /* We have both a clock divider and an exposure register.
+ We first calculate the clock divider, as that determines
+ the maximum exposure and then we calculate the exposure
+ register setting (which goes from 0 - 511).
+
+ Note our 0 - 4095 exposure is mapped to 0 - 511
+ milliseconds exposure time */
+ u8 clockdiv = (60 * expo + 7999) / 8000;
+
+ /* Limit framerate to not exceed usb bandwidth */
+ if (clockdiv < min_clockdiv && gspca_dev->width >= 320)
+ clockdiv = min_clockdiv;
+ else if (clockdiv < 2)
+ clockdiv = 2;
+
+ if (sd->cam_type == CAM_TYPE_VGA && clockdiv < 4)
+ clockdiv = 4;
+
+ /* Frame exposure time in ms = 1000 * clockdiv / 60 ->
+ exposure = (sd->exposure / 8) * 511 / (1000 * clockdiv / 60) */
+ exposure = (60 * 511 * expo) / (8000 * clockdiv);
+ if (exposure > 511)
+ exposure = 511;
+
+ /* exposure register value is reversed! */
+ exposure = 511 - exposure;
+
+ buf[0] = exposure & 0xff;
+ buf[1] = exposure >> 8;
+ sensor_write_reg(gspca_dev, 0x0e, 0, buf, 2);
+ sensor_write1(gspca_dev, 0x02, clockdiv);
+ }
+}
+
+static void setgain(struct gspca_dev *gspca_dev, s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ u8 gainreg;
+
+ if (sd->cam_type == CAM_TYPE_CIF && sd->sensor_type == 1)
+ sensor_write1(gspca_dev, 0x0e, val);
+ else if (sd->cam_type == CAM_TYPE_VGA && sd->sensor_type == 2)
+ for (gainreg = 0x0a; gainreg < 0x11; gainreg += 2) {
+ sensor_write1(gspca_dev, gainreg, val >> 8);
+ sensor_write1(gspca_dev, gainreg + 1, val & 0xff);
+ }
+ else
+ sensor_write1(gspca_dev, 0x10, val);
+}
+
+static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
+{
+ sensor_write1(gspca_dev, 0x1c, val);
+}
+
+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 (!gspca_dev->streaming)
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ setbrightness(gspca_dev, ctrl->val);
+ break;
+ case V4L2_CID_CONTRAST:
+ setcontrast(gspca_dev, ctrl->val);
+ break;
+ case V4L2_CID_EXPOSURE:
+ setexposure(gspca_dev, sd->exposure->val,
+ sd->min_clockdiv ? sd->min_clockdiv->val : 0);
+ break;
+ case V4L2_CID_GAIN:
+ setgain(gspca_dev, ctrl->val);
+ break;
+ }
+ return gspca_dev->usb_err;
+}
+
+static const struct v4l2_ctrl_ops sd_ctrl_ops = {
+ .s_ctrl = sd_s_ctrl,
+};
+
+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;
+ static const struct v4l2_ctrl_config clockdiv = {
+ .ops = &sd_ctrl_ops,
+ .id = MR97310A_CID_CLOCKDIV,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Minimum Clock Divider",
+ .min = MR97310A_MIN_CLOCKDIV_MIN,
+ .max = MR97310A_MIN_CLOCKDIV_MAX,
+ .step = 1,
+ .def = MR97310A_MIN_CLOCKDIV_DEFAULT,
+ };
+ bool has_brightness = false;
+ bool has_argus_brightness = false;
+ bool has_contrast = false;
+ bool has_gain = false;
+ bool has_cs_gain = false;
+ bool has_exposure = false;
+ bool has_clockdiv = false;
+
+ gspca_dev->vdev.ctrl_handler = hdl;
+ v4l2_ctrl_handler_init(hdl, 4);
+
+ /* Setup controls depending on camera type */
+ if (sd->cam_type == CAM_TYPE_CIF) {
+ /* No brightness for sensor_type 0 */
+ if (sd->sensor_type == 0)
+ has_exposure = has_gain = has_clockdiv = true;
+ else
+ has_exposure = has_gain = has_brightness = true;
+ } else {
+ /* All controls need to be disabled if VGA sensor_type is 0 */
+ if (sd->sensor_type == 0)
+ ; /* no controls! */
+ else if (sd->sensor_type == 2)
+ has_exposure = has_cs_gain = has_contrast = true;
+ else if (sd->do_lcd_stop)
+ has_exposure = has_gain = has_argus_brightness =
+ has_clockdiv = true;
+ else
+ has_exposure = has_gain = has_brightness =
+ has_clockdiv = true;
+ }
+
+ /* Separate brightness control description for Argus QuickClix as it has
+ * different limits from the other mr97310a cameras, and separate gain
+ * control for Sakar CyberPix camera. */
+ /*
+ * This control is disabled for CIF type 1 and VGA type 0 cameras.
+ * It does not quite act linearly for the Argus QuickClix camera,
+ * but it does control brightness. The values are 0 - 15 only, and
+ * the table above makes them act consecutively.
+ */
+ if (has_brightness)
+ v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, -254, 255, 1,
+ MR97310A_BRIGHTNESS_DEFAULT);
+ else if (has_argus_brightness)
+ v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 15, 1,
+ MR97310A_BRIGHTNESS_DEFAULT);
+ if (has_contrast)
+ v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_CONTRAST, MR97310A_CONTRAST_MIN,
+ MR97310A_CONTRAST_MAX, 1, MR97310A_CONTRAST_DEFAULT);
+ if (has_gain)
+ v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_GAIN, MR97310A_GAIN_MIN, MR97310A_GAIN_MAX,
+ 1, MR97310A_GAIN_DEFAULT);
+ else if (has_cs_gain)
+ v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_GAIN,
+ MR97310A_CS_GAIN_MIN, MR97310A_CS_GAIN_MAX,
+ 1, MR97310A_CS_GAIN_DEFAULT);
+ if (has_exposure)
+ sd->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_EXPOSURE, MR97310A_EXPOSURE_MIN,
+ MR97310A_EXPOSURE_MAX, 1, MR97310A_EXPOSURE_DEFAULT);
+ if (has_clockdiv)
+ sd->min_clockdiv = v4l2_ctrl_new_custom(hdl, &clockdiv, NULL);
+
+ if (hdl->error) {
+ pr_err("Could not initialize controls\n");
+ return hdl->error;
+ }
+ if (has_exposure && has_clockdiv)
+ v4l2_ctrl_cluster(2, &sd->exposure);
+ return 0;
+}
+
+/* Include pac common sof detection functions */
+#include "pac_common.h"
+
+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;
+ unsigned char *sof;
+
+ sof = pac_find_sof(&sd->sof_read, data, len);
+ if (sof) {
+ int n;
+
+ /* finish decoding current frame */
+ n = sof - data;
+ if (n > sizeof pac_sof_marker)
+ n -= sizeof pac_sof_marker;
+ else
+ n = 0;
+ gspca_frame_add(gspca_dev, LAST_PACKET,
+ data, n);
+ /* Start next frame. */
+ gspca_frame_add(gspca_dev, FIRST_PACKET,
+ pac_sof_marker, sizeof pac_sof_marker);
+ len -= sof - data;
+ data = sof;
+ }
+ gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
+}
+
+/* sub-driver description */
+static const struct sd_desc sd_desc = {
+ .name = MODULE_NAME,
+ .config = sd_config,
+ .init = sd_init,
+ .init_controls = sd_init_controls,
+ .start = sd_start,
+ .stopN = sd_stopN,
+ .pkt_scan = sd_pkt_scan,
+};
+
+/* -- module initialisation -- */
+static const struct usb_device_id device_table[] = {
+ {USB_DEVICE(0x08ca, 0x0110)}, /* Trust Spyc@m 100 */
+ {USB_DEVICE(0x08ca, 0x0111)}, /* Aiptek Pencam VGA+ */
+ {USB_DEVICE(0x093a, 0x010f)}, /* All other known MR97310A VGA cams */
+ {USB_DEVICE(0x093a, 0x010e)}, /* All known MR97310A CIF cams */
+ {}
+};
+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,
+ .reset_resume = gspca_resume,
+#endif
+};
+
+module_usb_driver(sd_driver);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.