--- /dev/null
+/*
+ * Pixart PAC207BCA library
+ *
+ * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
+ * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
+ * Copyleft (C) 2005 Michel Xhaard mxhaard@magic.fr
+ *
+ * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
+ *
+ * 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
+
+#define MODULE_NAME "pac207"
+
+#include <linux/input.h>
+#include "gspca.h"
+/* Include pac common sof detection functions */
+#include "pac_common.h"
+
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_DESCRIPTION("Pixart PAC207");
+MODULE_LICENSE("GPL");
+
+#define PAC207_CTRL_TIMEOUT 100 /* ms */
+
+#define PAC207_BRIGHTNESS_MIN 0
+#define PAC207_BRIGHTNESS_MAX 255
+#define PAC207_BRIGHTNESS_DEFAULT 46
+#define PAC207_BRIGHTNESS_REG 0x08
+
+#define PAC207_EXPOSURE_MIN 3
+#define PAC207_EXPOSURE_MAX 90 /* 1 sec expo time / 1 fps */
+#define PAC207_EXPOSURE_DEFAULT 5 /* power on default: 3 */
+#define PAC207_EXPOSURE_REG 0x02
+
+#define PAC207_GAIN_MIN 0
+#define PAC207_GAIN_MAX 31
+#define PAC207_GAIN_DEFAULT 7 /* power on default: 9 */
+#define PAC207_GAIN_REG 0x0e
+
+#define PAC207_AUTOGAIN_DEADZONE 30
+
+/* global parameters */
+static int led_invert;
+module_param(led_invert, int, 0644);
+MODULE_PARM_DESC(led_invert, "Invert led");
+
+/* specific webcam descriptor */
+struct sd {
+ struct gspca_dev gspca_dev; /* !! must be the first item */
+
+ struct v4l2_ctrl *brightness;
+
+ u8 mode;
+ u8 sof_read;
+ u8 header_read;
+ u8 autogain_ignore_frames;
+
+ atomic_t avg_lum;
+};
+
+static const struct v4l2_pix_format sif_mode[] = {
+ {176, 144, V4L2_PIX_FMT_PAC207, V4L2_FIELD_NONE,
+ .bytesperline = 176,
+ .sizeimage = (176 + 2) * 144,
+ /* uncompressed, add 2 bytes / line for line header */
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 1},
+ {352, 288, V4L2_PIX_FMT_PAC207, V4L2_FIELD_NONE,
+ .bytesperline = 352,
+ /* compressed, but only when needed (not compressed
+ when the framerate is low) */
+ .sizeimage = (352 + 2) * 288,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 0},
+};
+
+static const __u8 pac207_sensor_init[][8] = {
+ {0x10, 0x12, 0x0d, 0x12, 0x0c, 0x01, 0x29, 0x84},
+ {0x49, 0x64, 0x64, 0x64, 0x04, 0x10, 0xf0, 0x30},
+ {0x00, 0x00, 0x00, 0x70, 0xa0, 0xf8, 0x00, 0x00},
+ {0x32, 0x00, 0x96, 0x00, 0xa2, 0x02, 0xaf, 0x00},
+};
+
+static void pac207_write_regs(struct gspca_dev *gspca_dev, u16 index,
+ const u8 *buffer, u16 length)
+{
+ struct usb_device *udev = gspca_dev->dev;
+ int err;
+
+ if (gspca_dev->usb_err < 0)
+ return;
+
+ memcpy(gspca_dev->usb_buf, buffer, length);
+
+ err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x01,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+ 0x00, index,
+ gspca_dev->usb_buf, length, PAC207_CTRL_TIMEOUT);
+ if (err < 0) {
+ pr_err("Failed to write registers to index 0x%04X, error %d\n",
+ index, err);
+ gspca_dev->usb_err = err;
+ }
+}
+
+static void pac207_write_reg(struct gspca_dev *gspca_dev, u16 index, u16 value)
+{
+ struct usb_device *udev = gspca_dev->dev;
+ int err;
+
+ if (gspca_dev->usb_err < 0)
+ return;
+
+ err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+ value, index, NULL, 0, PAC207_CTRL_TIMEOUT);
+ if (err) {
+ pr_err("Failed to write a register (index 0x%04X, value 0x%02X, error %d)\n",
+ index, value, err);
+ gspca_dev->usb_err = err;
+ }
+}
+
+static int pac207_read_reg(struct gspca_dev *gspca_dev, u16 index)
+{
+ struct usb_device *udev = gspca_dev->dev;
+ int res;
+
+ if (gspca_dev->usb_err < 0)
+ return 0;
+
+ res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+ 0x00, index,
+ gspca_dev->usb_buf, 1, PAC207_CTRL_TIMEOUT);
+ if (res < 0) {
+ pr_err("Failed to read a register (index 0x%04X, error %d)\n",
+ index, res);
+ gspca_dev->usb_err = res;
+ return 0;
+ }
+
+ return gspca_dev->usb_buf[0];
+}
+
+/* this function is called at probe time */
+static int sd_config(struct gspca_dev *gspca_dev,
+ const struct usb_device_id *id)
+{
+ struct cam *cam;
+ u8 idreg[2];
+
+ idreg[0] = pac207_read_reg(gspca_dev, 0x0000);
+ idreg[1] = pac207_read_reg(gspca_dev, 0x0001);
+ idreg[0] = ((idreg[0] & 0x0f) << 4) | ((idreg[1] & 0xf0) >> 4);
+ idreg[1] = idreg[1] & 0x0f;
+ PDEBUG(D_PROBE, "Pixart Sensor ID 0x%02X Chips ID 0x%02X",
+ idreg[0], idreg[1]);
+
+ if (idreg[0] != 0x27) {
+ PDEBUG(D_PROBE, "Error invalid sensor ID!");
+ return -ENODEV;
+ }
+
+ PDEBUG(D_PROBE,
+ "Pixart PAC207BCA Image Processor and Control Chip detected"
+ " (vid/pid 0x%04X:0x%04X)", id->idVendor, id->idProduct);
+
+ cam = &gspca_dev->cam;
+ cam->cam_mode = sif_mode;
+ cam->nmodes = ARRAY_SIZE(sif_mode);
+
+ return 0;
+}
+
+/* this function is called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+ u8 mode;
+
+ /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */
+ if (led_invert)
+ mode = 0x02;
+ else
+ mode = 0x00;
+ pac207_write_reg(gspca_dev, 0x41, mode);
+ pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */
+
+ return gspca_dev->usb_err;
+}
+
+static void setcontrol(struct gspca_dev *gspca_dev, u16 reg, u16 val)
+{
+ pac207_write_reg(gspca_dev, reg, val);
+ pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
+ pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
+}
+
+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 = PAC207_EXPOSURE_DEFAULT;
+ gspca_dev->gain->val = PAC207_GAIN_DEFAULT;
+ sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
+ }
+
+ if (!gspca_dev->streaming)
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ setcontrol(gspca_dev, PAC207_BRIGHTNESS_REG, ctrl->val);
+ break;
+ case V4L2_CID_AUTOGAIN:
+ if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val))
+ setcontrol(gspca_dev, PAC207_EXPOSURE_REG,
+ gspca_dev->exposure->val);
+ if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val))
+ setcontrol(gspca_dev, PAC207_GAIN_REG,
+ gspca_dev->gain->val);
+ 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, 4);
+
+ sd->brightness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_BRIGHTNESS,
+ PAC207_BRIGHTNESS_MIN, PAC207_BRIGHTNESS_MAX,
+ 1, PAC207_BRIGHTNESS_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,
+ PAC207_EXPOSURE_MIN, PAC207_EXPOSURE_MAX,
+ 1, PAC207_EXPOSURE_DEFAULT);
+ gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_GAIN,
+ PAC207_GAIN_MIN, PAC207_GAIN_MAX,
+ 1, PAC207_GAIN_DEFAULT);
+ if (hdl->error) {
+ pr_err("Could not initialize controls\n");
+ return hdl->error;
+ }
+ v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false);
+ return 0;
+}
+
+/* -- start the camera -- */
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ __u8 mode;
+
+ pac207_write_reg(gspca_dev, 0x0f, 0x10); /* Power control (Bit 6-0) */
+ pac207_write_regs(gspca_dev, 0x0002, pac207_sensor_init[0], 8);
+ pac207_write_regs(gspca_dev, 0x000a, pac207_sensor_init[1], 8);
+ pac207_write_regs(gspca_dev, 0x0012, pac207_sensor_init[2], 8);
+ pac207_write_regs(gspca_dev, 0x0042, pac207_sensor_init[3], 8);
+
+ /* Compression Balance */
+ if (gspca_dev->pixfmt.width == 176)
+ pac207_write_reg(gspca_dev, 0x4a, 0xff);
+ else
+ pac207_write_reg(gspca_dev, 0x4a, 0x30);
+ pac207_write_reg(gspca_dev, 0x4b, 0x00); /* Sram test value */
+ pac207_write_reg(gspca_dev, 0x08, v4l2_ctrl_g_ctrl(sd->brightness));
+
+ /* PGA global gain (Bit 4-0) */
+ pac207_write_reg(gspca_dev, 0x0e,
+ v4l2_ctrl_g_ctrl(gspca_dev->gain));
+ pac207_write_reg(gspca_dev, 0x02,
+ v4l2_ctrl_g_ctrl(gspca_dev->exposure)); /* PXCK = 12MHz /n */
+
+ /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */
+ if (led_invert)
+ mode = 0x00;
+ else
+ mode = 0x02;
+ if (gspca_dev->pixfmt.width == 176) { /* 176x144 */
+ mode |= 0x01;
+ PDEBUG(D_STREAM, "pac207_start mode 176x144");
+ } else { /* 352x288 */
+ PDEBUG(D_STREAM, "pac207_start mode 352x288");
+ }
+ pac207_write_reg(gspca_dev, 0x41, mode);
+
+ pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
+ pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
+ msleep(10);
+ pac207_write_reg(gspca_dev, 0x40, 0x01); /* Start ISO pipe */
+
+ sd->sof_read = 0;
+ sd->autogain_ignore_frames = 0;
+ atomic_set(&sd->avg_lum, -1);
+ return gspca_dev->usb_err;
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+ u8 mode;
+
+ /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */
+ if (led_invert)
+ mode = 0x02;
+ else
+ mode = 0x00;
+ pac207_write_reg(gspca_dev, 0x40, 0x00); /* Stop ISO pipe */
+ pac207_write_reg(gspca_dev, 0x41, mode); /* Turn off LED */
+ pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */
+}
+
+
+static void pac207_do_auto_gain(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int avg_lum = atomic_read(&sd->avg_lum);
+
+ if (avg_lum == -1)
+ return;
+
+ if (sd->autogain_ignore_frames > 0)
+ sd->autogain_ignore_frames--;
+ else if (gspca_coarse_grained_expo_autogain(gspca_dev, avg_lum,
+ 90, PAC207_AUTOGAIN_DEADZONE))
+ sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
+}
+
+static void sd_pkt_scan(struct gspca_dev *gspca_dev,
+ u8 *data,
+ int len)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ unsigned char *sof;
+
+ sof = pac_find_sof(gspca_dev, &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);
+ sd->header_read = 0;
+ gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
+ len -= sof - data;
+ data = sof;
+ }
+ if (sd->header_read < 11) {
+ int needed;
+
+ /* get average lumination from frame header (byte 5) */
+ if (sd->header_read < 5) {
+ needed = 5 - sd->header_read;
+ if (len >= needed)
+ atomic_set(&sd->avg_lum, data[needed - 1]);
+ }
+ /* skip the rest of the header */
+ needed = 11 - sd->header_read;
+ if (len <= needed) {
+ sd->header_read += len;
+ return;
+ }
+ data += needed;
+ len -= needed;
+ sd->header_read = 11;
+ }
+
+ gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
+}
+
+#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;
+
+ if (len == 2 && data[0] == 0x5a && data[1] == 0x5a) {
+ 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 */
+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,
+ .dq_callback = pac207_do_auto_gain,
+ .pkt_scan = sd_pkt_scan,
+#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(0x041e, 0x4028)},
+ {USB_DEVICE(0x093a, 0x2460)},
+ {USB_DEVICE(0x093a, 0x2461)},
+ {USB_DEVICE(0x093a, 0x2463)},
+ {USB_DEVICE(0x093a, 0x2464)},
+ {USB_DEVICE(0x093a, 0x2468)},
+ {USB_DEVICE(0x093a, 0x2470)},
+ {USB_DEVICE(0x093a, 0x2471)},
+ {USB_DEVICE(0x093a, 0x2472)},
+ {USB_DEVICE(0x093a, 0x2474)},
+ {USB_DEVICE(0x093a, 0x2476)},
+ {USB_DEVICE(0x145f, 0x013a)},
+ {USB_DEVICE(0x2001, 0xf115)},
+ {}
+};
+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);
Code Review / kvmfornfv.git / blobdiff