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path: root/drivers/media/usb/gspca/stv06xx/stv06xx_st6422.c
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Diffstat (limited to 'drivers/media/usb/gspca/stv06xx/stv06xx_st6422.c')
-rw-r--r--drivers/media/usb/gspca/stv06xx/stv06xx_st6422.c285
1 files changed, 285 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/stv06xx/stv06xx_st6422.c b/drivers/media/usb/gspca/stv06xx/stv06xx_st6422.c
new file mode 100644
index 00000000000..8a57990dfe0
--- /dev/null
+++ b/drivers/media/usb/gspca/stv06xx/stv06xx_st6422.c
@@ -0,0 +1,285 @@
+/*
+ * Support for the sensor part which is integrated (I think) into the
+ * st6422 stv06xx alike bridge, as its integrated there are no i2c writes
+ * but instead direct bridge writes.
+ *
+ * Copyright (c) 2009 Hans de Goede <hdegoede@redhat.com>
+ *
+ * Strongly based on qc-usb-messenger, which is:
+ * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
+ * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
+ * Copyright (c) 2002, 2003 Tuukka Toivonen
+ *
+ * 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
+ * (at your option) 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
+
+#include "stv06xx_st6422.h"
+
+static struct v4l2_pix_format st6422_mode[] = {
+ /* Note we actually get 124 lines of data, of which we skip the 4st
+ 4 as they are garbage */
+ {
+ 162,
+ 120,
+ V4L2_PIX_FMT_SGRBG8,
+ V4L2_FIELD_NONE,
+ .sizeimage = 162 * 120,
+ .bytesperline = 162,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 1
+ },
+ /* Note we actually get 248 lines of data, of which we skip the 4st
+ 4 as they are garbage, and we tell the app it only gets the
+ first 240 of the 244 lines it actually gets, so that it ignores
+ the last 4. */
+ {
+ 324,
+ 240,
+ V4L2_PIX_FMT_SGRBG8,
+ V4L2_FIELD_NONE,
+ .sizeimage = 324 * 244,
+ .bytesperline = 324,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 0
+ },
+};
+
+/* V4L2 controls supported by the driver */
+static int setbrightness(struct sd *sd, s32 val);
+static int setcontrast(struct sd *sd, s32 val);
+static int setgain(struct sd *sd, u8 gain);
+static int setexposure(struct sd *sd, s16 expo);
+
+static int st6422_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;
+ int err = -EINVAL;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ err = setbrightness(sd, ctrl->val);
+ break;
+ case V4L2_CID_CONTRAST:
+ err = setcontrast(sd, ctrl->val);
+ break;
+ case V4L2_CID_GAIN:
+ err = setgain(sd, ctrl->val);
+ break;
+ case V4L2_CID_EXPOSURE:
+ err = setexposure(sd, ctrl->val);
+ break;
+ }
+
+ /* commit settings */
+ if (err >= 0)
+ err = stv06xx_write_bridge(sd, 0x143f, 0x01);
+ sd->gspca_dev.usb_err = err;
+ return err;
+}
+
+static const struct v4l2_ctrl_ops st6422_ctrl_ops = {
+ .s_ctrl = st6422_s_ctrl,
+};
+
+static int st6422_init_controls(struct sd *sd)
+{
+ struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
+
+ v4l2_ctrl_handler_init(hdl, 4);
+ v4l2_ctrl_new_std(hdl, &st6422_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 31, 1, 3);
+ v4l2_ctrl_new_std(hdl, &st6422_ctrl_ops,
+ V4L2_CID_CONTRAST, 0, 15, 1, 11);
+ v4l2_ctrl_new_std(hdl, &st6422_ctrl_ops,
+ V4L2_CID_EXPOSURE, 0, 1023, 1, 256);
+ v4l2_ctrl_new_std(hdl, &st6422_ctrl_ops,
+ V4L2_CID_GAIN, 0, 255, 1, 64);
+
+ return hdl->error;
+}
+
+static int st6422_probe(struct sd *sd)
+{
+ if (sd->bridge != BRIDGE_ST6422)
+ return -ENODEV;
+
+ pr_info("st6422 sensor detected\n");
+
+ sd->gspca_dev.cam.cam_mode = st6422_mode;
+ sd->gspca_dev.cam.nmodes = ARRAY_SIZE(st6422_mode);
+ return 0;
+}
+
+static int st6422_init(struct sd *sd)
+{
+ int err = 0, i;
+
+ const u16 st6422_bridge_init[][2] = {
+ { STV_ISO_ENABLE, 0x00 }, /* disable capture */
+ { 0x1436, 0x00 },
+ { 0x1432, 0x03 }, /* 0x00-0x1F brightness */
+ { 0x143a, 0xf9 }, /* 0x00-0x0F contrast */
+ { 0x0509, 0x38 }, /* R */
+ { 0x050a, 0x38 }, /* G */
+ { 0x050b, 0x38 }, /* B */
+ { 0x050c, 0x2a },
+ { 0x050d, 0x01 },
+
+
+ { 0x1431, 0x00 }, /* 0x00-0x07 ??? */
+ { 0x1433, 0x34 }, /* 160x120, 0x00-0x01 night filter */
+ { 0x1438, 0x18 }, /* 640x480 */
+/* 18 bayes */
+/* 10 compressed? */
+
+ { 0x1439, 0x00 },
+/* anti-noise? 0xa2 gives a perfect image */
+
+ { 0x143b, 0x05 },
+ { 0x143c, 0x00 }, /* 0x00-0x01 - ??? */
+
+
+/* shutter time 0x0000-0x03FF */
+/* low value give good picures on moving objects (but requires much light) */
+/* high value gives good picures in darkness (but tends to be overexposed) */
+ { 0x143e, 0x01 },
+ { 0x143d, 0x00 },
+
+ { 0x1442, 0xe2 },
+/* write: 1x1x xxxx */
+/* read: 1x1x xxxx */
+/* bit 5 == button pressed and hold if 0 */
+/* write 0xe2,0xea */
+
+/* 0x144a */
+/* 0x00 init */
+/* bit 7 == button has been pressed, but not handled */
+
+/* interrupt */
+/* if(urb->iso_frame_desc[i].status == 0x80) { */
+/* if(urb->iso_frame_desc[i].status == 0x88) { */
+
+ { 0x1500, 0xd0 },
+ { 0x1500, 0xd0 },
+ { 0x1500, 0x50 }, /* 0x00 - 0xFF 0x80 == compr ? */
+
+ { 0x1501, 0xaf },
+/* high val-> light area gets darker */
+/* low val -> light area gets lighter */
+ { 0x1502, 0xc2 },
+/* high val-> light area gets darker */
+/* low val -> light area gets lighter */
+ { 0x1503, 0x45 },
+/* high val-> light area gets darker */
+/* low val -> light area gets lighter */
+ { 0x1505, 0x02 },
+/* 2 : 324x248 80352 bytes */
+/* 7 : 248x162 40176 bytes */
+/* c+f: 162*124 20088 bytes */
+
+ { 0x150e, 0x8e },
+ { 0x150f, 0x37 },
+ { 0x15c0, 0x00 },
+ { 0x15c3, 0x08 }, /* 0x04/0x14 ... test pictures ??? */
+
+
+ { 0x143f, 0x01 }, /* commit settings */
+
+ };
+
+ for (i = 0; i < ARRAY_SIZE(st6422_bridge_init) && !err; i++) {
+ err = stv06xx_write_bridge(sd, st6422_bridge_init[i][0],
+ st6422_bridge_init[i][1]);
+ }
+
+ return err;
+}
+
+static int setbrightness(struct sd *sd, s32 val)
+{
+ /* val goes from 0 -> 31 */
+ return stv06xx_write_bridge(sd, 0x1432, val);
+}
+
+static int setcontrast(struct sd *sd, s32 val)
+{
+ /* Val goes from 0 -> 15 */
+ return stv06xx_write_bridge(sd, 0x143a, val | 0xf0);
+}
+
+static int setgain(struct sd *sd, u8 gain)
+{
+ int err;
+
+ /* Set red, green, blue, gain */
+ err = stv06xx_write_bridge(sd, 0x0509, gain);
+ if (err < 0)
+ return err;
+
+ err = stv06xx_write_bridge(sd, 0x050a, gain);
+ if (err < 0)
+ return err;
+
+ err = stv06xx_write_bridge(sd, 0x050b, gain);
+ if (err < 0)
+ return err;
+
+ /* 2 mystery writes */
+ err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
+ if (err < 0)
+ return err;
+
+ return stv06xx_write_bridge(sd, 0x050d, 0x01);
+}
+
+static int setexposure(struct sd *sd, s16 expo)
+{
+ int err;
+
+ err = stv06xx_write_bridge(sd, 0x143d, expo & 0xff);
+ if (err < 0)
+ return err;
+
+ return stv06xx_write_bridge(sd, 0x143e, expo >> 8);
+}
+
+static int st6422_start(struct sd *sd)
+{
+ int err;
+ struct cam *cam = &sd->gspca_dev.cam;
+
+ if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
+ err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
+ else
+ err = stv06xx_write_bridge(sd, 0x1505, 0x02);
+ if (err < 0)
+ return err;
+
+ /* commit settings */
+ err = stv06xx_write_bridge(sd, 0x143f, 0x01);
+ return (err < 0) ? err : 0;
+}
+
+static int st6422_stop(struct sd *sd)
+{
+ PDEBUG(D_STREAM, "Halting stream");
+
+ return 0;
+}
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