summaryrefslogtreecommitdiffstats
path: root/drivers/media/usb/gspca/se401.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/usb/gspca/se401.c')
-rw-r--r--drivers/media/usb/gspca/se401.c730
1 files changed, 730 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/se401.c b/drivers/media/usb/gspca/se401.c
new file mode 100644
index 0000000000..e087cfb598
--- /dev/null
+++ b/drivers/media/usb/gspca/se401.c
@@ -0,0 +1,730 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * GSPCA Endpoints (formerly known as AOX) se401 USB Camera sub Driver
+ *
+ * Copyright (C) 2011 Hans de Goede <hdegoede@redhat.com>
+ *
+ * Based on the v4l1 se401 driver which is:
+ *
+ * Copyright (c) 2000 Jeroen B. Vreeken (pe1rxq@amsat.org)
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define MODULE_NAME "se401"
+
+#define BULK_SIZE 4096
+#define PACKET_SIZE 1024
+#define READ_REQ_SIZE 64
+#define MAX_MODES ((READ_REQ_SIZE - 6) / 4)
+/* The se401 compression algorithm uses a fixed quant factor, which
+ can be configured by setting the high nibble of the SE401_OPERATINGMODE
+ feature. This needs to exactly match what is in libv4l! */
+#define SE401_QUANT_FACT 8
+
+#include <linux/input.h>
+#include <linux/slab.h>
+#include "gspca.h"
+#include "se401.h"
+
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_DESCRIPTION("Endpoints se401");
+MODULE_LICENSE("GPL");
+
+/* exposure change state machine states */
+enum {
+ EXPO_CHANGED,
+ EXPO_DROP_FRAME,
+ EXPO_NO_CHANGE,
+};
+
+/* specific webcam descriptor */
+struct sd {
+ struct gspca_dev gspca_dev; /* !! must be the first item */
+ struct { /* exposure/freq control cluster */
+ struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *freq;
+ };
+ bool has_brightness;
+ struct v4l2_pix_format fmts[MAX_MODES];
+ int pixels_read;
+ int packet_read;
+ u8 packet[PACKET_SIZE];
+ u8 restart_stream;
+ u8 button_state;
+ u8 resetlevel;
+ u8 resetlevel_frame_count;
+ int resetlevel_adjust_dir;
+ int expo_change_state;
+};
+
+
+static void se401_write_req(struct gspca_dev *gspca_dev, u16 req, u16 value,
+ int silent)
+{
+ int err;
+
+ if (gspca_dev->usb_err < 0)
+ return;
+
+ err = usb_control_msg(gspca_dev->dev,
+ usb_sndctrlpipe(gspca_dev->dev, 0), req,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ value, 0, NULL, 0, 1000);
+ if (err < 0) {
+ if (!silent)
+ pr_err("write req failed req %#04x val %#04x error %d\n",
+ req, value, err);
+ gspca_dev->usb_err = err;
+ }
+}
+
+static void se401_read_req(struct gspca_dev *gspca_dev, u16 req, int silent)
+{
+ int err;
+
+ if (gspca_dev->usb_err < 0)
+ return;
+
+ if (USB_BUF_SZ < READ_REQ_SIZE) {
+ pr_err("USB_BUF_SZ too small!!\n");
+ gspca_dev->usb_err = -ENOBUFS;
+ return;
+ }
+
+ err = usb_control_msg(gspca_dev->dev,
+ usb_rcvctrlpipe(gspca_dev->dev, 0), req,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, 0, gspca_dev->usb_buf, READ_REQ_SIZE, 1000);
+ if (err < 0) {
+ if (!silent)
+ pr_err("read req failed req %#04x error %d\n",
+ req, err);
+ gspca_dev->usb_err = err;
+ /*
+ * Make sure the buffer is zeroed to avoid uninitialized
+ * values.
+ */
+ memset(gspca_dev->usb_buf, 0, READ_REQ_SIZE);
+ }
+}
+
+static void se401_set_feature(struct gspca_dev *gspca_dev,
+ u16 selector, u16 param)
+{
+ int err;
+
+ if (gspca_dev->usb_err < 0)
+ return;
+
+ err = usb_control_msg(gspca_dev->dev,
+ usb_sndctrlpipe(gspca_dev->dev, 0),
+ SE401_REQ_SET_EXT_FEATURE,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ param, selector, NULL, 0, 1000);
+ if (err < 0) {
+ pr_err("set feature failed sel %#04x param %#04x error %d\n",
+ selector, param, err);
+ gspca_dev->usb_err = err;
+ }
+}
+
+static int se401_get_feature(struct gspca_dev *gspca_dev, u16 selector)
+{
+ int err;
+
+ if (gspca_dev->usb_err < 0)
+ return gspca_dev->usb_err;
+
+ if (USB_BUF_SZ < 2) {
+ pr_err("USB_BUF_SZ too small!!\n");
+ gspca_dev->usb_err = -ENOBUFS;
+ return gspca_dev->usb_err;
+ }
+
+ err = usb_control_msg(gspca_dev->dev,
+ usb_rcvctrlpipe(gspca_dev->dev, 0),
+ SE401_REQ_GET_EXT_FEATURE,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, selector, gspca_dev->usb_buf, 2, 1000);
+ if (err < 0) {
+ pr_err("get feature failed sel %#04x error %d\n",
+ selector, err);
+ gspca_dev->usb_err = err;
+ return err;
+ }
+ return gspca_dev->usb_buf[0] | (gspca_dev->usb_buf[1] << 8);
+}
+
+static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
+{
+ /* HDG: this does not seem to do anything on my cam */
+ se401_write_req(gspca_dev, SE401_REQ_SET_BRT, val, 0);
+}
+
+static void setgain(struct gspca_dev *gspca_dev, s32 val)
+{
+ u16 gain = 63 - val;
+
+ /* red color gain */
+ se401_set_feature(gspca_dev, HV7131_REG_ARCG, gain);
+ /* green color gain */
+ se401_set_feature(gspca_dev, HV7131_REG_AGCG, gain);
+ /* blue color gain */
+ se401_set_feature(gspca_dev, HV7131_REG_ABCG, gain);
+}
+
+static void setexposure(struct gspca_dev *gspca_dev, s32 val, s32 freq)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int integration = val << 6;
+ u8 expose_h, expose_m, expose_l;
+
+ /* Do this before the set_feature calls, for proper timing wrt
+ the interrupt driven pkt_scan. Note we may still race but that
+ is not a big issue, the expo change state machine is merely for
+ avoiding underexposed frames getting send out, if one sneaks
+ through so be it */
+ sd->expo_change_state = EXPO_CHANGED;
+
+ if (freq == V4L2_CID_POWER_LINE_FREQUENCY_50HZ)
+ integration = integration - integration % 106667;
+ if (freq == V4L2_CID_POWER_LINE_FREQUENCY_60HZ)
+ integration = integration - integration % 88889;
+
+ expose_h = (integration >> 16);
+ expose_m = (integration >> 8);
+ expose_l = integration;
+
+ /* integration time low */
+ se401_set_feature(gspca_dev, HV7131_REG_TITL, expose_l);
+ /* integration time mid */
+ se401_set_feature(gspca_dev, HV7131_REG_TITM, expose_m);
+ /* integration time high */
+ se401_set_feature(gspca_dev, HV7131_REG_TITU, expose_h);
+}
+
+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 = &gspca_dev->cam;
+ u8 *cd = gspca_dev->usb_buf;
+ int i, j, n;
+ int widths[MAX_MODES], heights[MAX_MODES];
+
+ /* Read the camera descriptor */
+ se401_read_req(gspca_dev, SE401_REQ_GET_CAMERA_DESCRIPTOR, 1);
+ if (gspca_dev->usb_err) {
+ /* Sometimes after being idle for a while the se401 won't
+ respond and needs a good kicking */
+ usb_reset_device(gspca_dev->dev);
+ gspca_dev->usb_err = 0;
+ se401_read_req(gspca_dev, SE401_REQ_GET_CAMERA_DESCRIPTOR, 0);
+ }
+
+ /* Some cameras start with their LED on */
+ se401_write_req(gspca_dev, SE401_REQ_LED_CONTROL, 0, 0);
+ if (gspca_dev->usb_err)
+ return gspca_dev->usb_err;
+
+ if (cd[1] != 0x41) {
+ pr_err("Wrong descriptor type\n");
+ return -ENODEV;
+ }
+
+ if (!(cd[2] & SE401_FORMAT_BAYER)) {
+ pr_err("Bayer format not supported!\n");
+ return -ENODEV;
+ }
+
+ if (cd[3])
+ pr_info("ExtraFeatures: %d\n", cd[3]);
+
+ n = cd[4] | (cd[5] << 8);
+ if (n > MAX_MODES) {
+ pr_err("Too many frame sizes\n");
+ return -ENODEV;
+ }
+
+ for (i = 0; i < n ; i++) {
+ widths[i] = cd[6 + i * 4 + 0] | (cd[6 + i * 4 + 1] << 8);
+ heights[i] = cd[6 + i * 4 + 2] | (cd[6 + i * 4 + 3] << 8);
+ }
+
+ for (i = 0; i < n ; i++) {
+ sd->fmts[i].width = widths[i];
+ sd->fmts[i].height = heights[i];
+ sd->fmts[i].field = V4L2_FIELD_NONE;
+ sd->fmts[i].colorspace = V4L2_COLORSPACE_SRGB;
+ sd->fmts[i].priv = 1;
+
+ /* janggu compression only works for 1/4th or 1/16th res */
+ for (j = 0; j < n; j++) {
+ if (widths[j] / 2 == widths[i] &&
+ heights[j] / 2 == heights[i]) {
+ sd->fmts[i].priv = 2;
+ break;
+ }
+ }
+ /* 1/16th if available too is better then 1/4th, because
+ we then use a larger area of the sensor */
+ for (j = 0; j < n; j++) {
+ if (widths[j] / 4 == widths[i] &&
+ heights[j] / 4 == heights[i]) {
+ sd->fmts[i].priv = 4;
+ break;
+ }
+ }
+
+ if (sd->fmts[i].priv == 1) {
+ /* Not a 1/4th or 1/16th res, use bayer */
+ sd->fmts[i].pixelformat = V4L2_PIX_FMT_SBGGR8;
+ sd->fmts[i].bytesperline = widths[i];
+ sd->fmts[i].sizeimage = widths[i] * heights[i];
+ pr_info("Frame size: %dx%d bayer\n",
+ widths[i], heights[i]);
+ } else {
+ /* Found a match use janggu compression */
+ sd->fmts[i].pixelformat = V4L2_PIX_FMT_SE401;
+ sd->fmts[i].bytesperline = 0;
+ sd->fmts[i].sizeimage = widths[i] * heights[i] * 3;
+ pr_info("Frame size: %dx%d 1/%dth janggu\n",
+ widths[i], heights[i],
+ sd->fmts[i].priv * sd->fmts[i].priv);
+ }
+ }
+
+ cam->cam_mode = sd->fmts;
+ cam->nmodes = n;
+ cam->bulk = 1;
+ cam->bulk_size = BULK_SIZE;
+ cam->bulk_nurbs = 4;
+ sd->resetlevel = 0x2d; /* Set initial resetlevel */
+
+ /* See if the camera supports brightness */
+ se401_read_req(gspca_dev, SE401_REQ_GET_BRT, 1);
+ sd->has_brightness = !!gspca_dev->usb_err;
+ gspca_dev->usb_err = 0;
+
+ return 0;
+}
+
+/* this function is called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+ return 0;
+}
+
+/* function called at start time before URB creation */
+static int sd_isoc_init(struct gspca_dev *gspca_dev)
+{
+ gspca_dev->alt = 1; /* Ignore the bogus isoc alt settings */
+
+ return gspca_dev->usb_err;
+}
+
+/* -- start the camera -- */
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *)gspca_dev;
+ int mult = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
+ int mode = 0;
+
+ se401_write_req(gspca_dev, SE401_REQ_CAMERA_POWER, 1, 1);
+ if (gspca_dev->usb_err) {
+ /* Sometimes after being idle for a while the se401 won't
+ respond and needs a good kicking */
+ usb_reset_device(gspca_dev->dev);
+ gspca_dev->usb_err = 0;
+ se401_write_req(gspca_dev, SE401_REQ_CAMERA_POWER, 1, 0);
+ }
+ se401_write_req(gspca_dev, SE401_REQ_LED_CONTROL, 1, 0);
+
+ se401_set_feature(gspca_dev, HV7131_REG_MODE_B, 0x05);
+
+ /* set size + mode */
+ se401_write_req(gspca_dev, SE401_REQ_SET_WIDTH,
+ gspca_dev->pixfmt.width * mult, 0);
+ se401_write_req(gspca_dev, SE401_REQ_SET_HEIGHT,
+ gspca_dev->pixfmt.height * mult, 0);
+ /*
+ * HDG: disabled this as it does not seem to do anything
+ * se401_write_req(gspca_dev, SE401_REQ_SET_OUTPUT_MODE,
+ * SE401_FORMAT_BAYER, 0);
+ */
+
+ switch (mult) {
+ case 1: /* Raw bayer */
+ mode = 0x03; break;
+ case 2: /* 1/4th janggu */
+ mode = SE401_QUANT_FACT << 4; break;
+ case 4: /* 1/16th janggu */
+ mode = (SE401_QUANT_FACT << 4) | 0x02; break;
+ }
+ se401_set_feature(gspca_dev, SE401_OPERATINGMODE, mode);
+
+ se401_set_feature(gspca_dev, HV7131_REG_ARLV, sd->resetlevel);
+
+ sd->packet_read = 0;
+ sd->pixels_read = 0;
+ sd->restart_stream = 0;
+ sd->resetlevel_frame_count = 0;
+ sd->resetlevel_adjust_dir = 0;
+ sd->expo_change_state = EXPO_NO_CHANGE;
+
+ se401_write_req(gspca_dev, SE401_REQ_START_CONTINUOUS_CAPTURE, 0, 0);
+
+ return gspca_dev->usb_err;
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+ se401_write_req(gspca_dev, SE401_REQ_STOP_CONTINUOUS_CAPTURE, 0, 0);
+ se401_write_req(gspca_dev, SE401_REQ_LED_CONTROL, 0, 0);
+ se401_write_req(gspca_dev, SE401_REQ_CAMERA_POWER, 0, 0);
+}
+
+static void sd_dq_callback(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *)gspca_dev;
+ unsigned int ahrc, alrc;
+ int oldreset, adjust_dir;
+
+ /* Restart the stream if requested do so by pkt_scan */
+ if (sd->restart_stream) {
+ sd_stopN(gspca_dev);
+ sd_start(gspca_dev);
+ sd->restart_stream = 0;
+ }
+
+ /* Automatically adjust sensor reset level
+ Hyundai have some really nice docs about this and other sensor
+ related stuff on their homepage: www.hei.co.kr */
+ sd->resetlevel_frame_count++;
+ if (sd->resetlevel_frame_count < 20)
+ return;
+
+ /* For some reason this normally read-only register doesn't get reset
+ to zero after reading them just once... */
+ se401_get_feature(gspca_dev, HV7131_REG_HIREFNOH);
+ se401_get_feature(gspca_dev, HV7131_REG_HIREFNOL);
+ se401_get_feature(gspca_dev, HV7131_REG_LOREFNOH);
+ se401_get_feature(gspca_dev, HV7131_REG_LOREFNOL);
+ ahrc = 256*se401_get_feature(gspca_dev, HV7131_REG_HIREFNOH) +
+ se401_get_feature(gspca_dev, HV7131_REG_HIREFNOL);
+ alrc = 256*se401_get_feature(gspca_dev, HV7131_REG_LOREFNOH) +
+ se401_get_feature(gspca_dev, HV7131_REG_LOREFNOL);
+
+ /* Not an exact science, but it seems to work pretty well... */
+ oldreset = sd->resetlevel;
+ if (alrc > 10) {
+ while (alrc >= 10 && sd->resetlevel < 63) {
+ sd->resetlevel++;
+ alrc /= 2;
+ }
+ } else if (ahrc > 20) {
+ while (ahrc >= 20 && sd->resetlevel > 0) {
+ sd->resetlevel--;
+ ahrc /= 2;
+ }
+ }
+ /* Detect ping-pong-ing and halve adjustment to avoid overshoot */
+ if (sd->resetlevel > oldreset)
+ adjust_dir = 1;
+ else
+ adjust_dir = -1;
+ if (sd->resetlevel_adjust_dir &&
+ sd->resetlevel_adjust_dir != adjust_dir)
+ sd->resetlevel = oldreset + (sd->resetlevel - oldreset) / 2;
+
+ if (sd->resetlevel != oldreset) {
+ sd->resetlevel_adjust_dir = adjust_dir;
+ se401_set_feature(gspca_dev, HV7131_REG_ARLV, sd->resetlevel);
+ }
+
+ sd->resetlevel_frame_count = 0;
+}
+
+static void sd_complete_frame(struct gspca_dev *gspca_dev, u8 *data, int len)
+{
+ struct sd *sd = (struct sd *)gspca_dev;
+
+ switch (sd->expo_change_state) {
+ case EXPO_CHANGED:
+ /* The exposure was changed while this frame
+ was being send, so this frame is ok */
+ sd->expo_change_state = EXPO_DROP_FRAME;
+ break;
+ case EXPO_DROP_FRAME:
+ /* The exposure was changed while this frame
+ was being captured, drop it! */
+ gspca_dev->last_packet_type = DISCARD_PACKET;
+ sd->expo_change_state = EXPO_NO_CHANGE;
+ break;
+ case EXPO_NO_CHANGE:
+ break;
+ }
+ gspca_frame_add(gspca_dev, LAST_PACKET, data, len);
+}
+
+static void sd_pkt_scan_janggu(struct gspca_dev *gspca_dev, u8 *data, int len)
+{
+ struct sd *sd = (struct sd *)gspca_dev;
+ int imagesize = gspca_dev->pixfmt.width * gspca_dev->pixfmt.height;
+ int i, plen, bits, pixels, info, count;
+
+ if (sd->restart_stream)
+ return;
+
+ /* Sometimes a 1024 bytes garbage bulk packet is send between frames */
+ if (gspca_dev->last_packet_type == LAST_PACKET && len == 1024) {
+ gspca_dev->last_packet_type = DISCARD_PACKET;
+ return;
+ }
+
+ i = 0;
+ while (i < len) {
+ /* Read header if not already be present from prev bulk pkt */
+ if (sd->packet_read < 4) {
+ count = 4 - sd->packet_read;
+ if (count > len - i)
+ count = len - i;
+ memcpy(&sd->packet[sd->packet_read], &data[i], count);
+ sd->packet_read += count;
+ i += count;
+ if (sd->packet_read < 4)
+ break;
+ }
+ bits = sd->packet[3] + (sd->packet[2] << 8);
+ pixels = sd->packet[1] + ((sd->packet[0] & 0x3f) << 8);
+ info = (sd->packet[0] & 0xc0) >> 6;
+ plen = ((bits + 47) >> 4) << 1;
+ /* Sanity checks */
+ if (plen > 1024) {
+ pr_err("invalid packet len %d restarting stream\n",
+ plen);
+ goto error;
+ }
+ if (info == 3) {
+ pr_err("unknown frame info value restarting stream\n");
+ goto error;
+ }
+
+ /* Read (remainder of) packet contents */
+ count = plen - sd->packet_read;
+ if (count > len - i)
+ count = len - i;
+ memcpy(&sd->packet[sd->packet_read], &data[i], count);
+ sd->packet_read += count;
+ i += count;
+ if (sd->packet_read < plen)
+ break;
+
+ sd->pixels_read += pixels;
+ sd->packet_read = 0;
+
+ switch (info) {
+ case 0: /* Frame data */
+ gspca_frame_add(gspca_dev, INTER_PACKET, sd->packet,
+ plen);
+ break;
+ case 1: /* EOF */
+ if (sd->pixels_read != imagesize) {
+ pr_err("frame size %d expected %d\n",
+ sd->pixels_read, imagesize);
+ goto error;
+ }
+ sd_complete_frame(gspca_dev, sd->packet, plen);
+ return; /* Discard the rest of the bulk packet !! */
+ case 2: /* SOF */
+ gspca_frame_add(gspca_dev, FIRST_PACKET, sd->packet,
+ plen);
+ sd->pixels_read = pixels;
+ break;
+ }
+ }
+ return;
+
+error:
+ sd->restart_stream = 1;
+ /* Give userspace a 0 bytes frame, so our dq callback gets
+ called and it can restart the stream */
+ gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
+ gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
+}
+
+static void sd_pkt_scan_bayer(struct gspca_dev *gspca_dev, u8 *data, int len)
+{
+ struct cam *cam = &gspca_dev->cam;
+ int imagesize = cam->cam_mode[gspca_dev->curr_mode].sizeimage;
+
+ if (gspca_dev->image_len == 0) {
+ gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
+ return;
+ }
+
+ if (gspca_dev->image_len + len >= imagesize) {
+ sd_complete_frame(gspca_dev, data, len);
+ return;
+ }
+
+ gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
+}
+
+static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, int len)
+{
+ int mult = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
+
+ if (len == 0)
+ return;
+
+ if (mult == 1) /* mult == 1 means raw bayer */
+ sd_pkt_scan_bayer(gspca_dev, data, len);
+ else
+ sd_pkt_scan_janggu(gspca_dev, data, len);
+}
+
+#if IS_ENABLED(CONFIG_INPUT)
+static int sd_int_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, int len)
+{
+ struct sd *sd = (struct sd *)gspca_dev;
+ u8 state;
+
+ if (len != 2)
+ return -EINVAL;
+
+ switch (data[0]) {
+ case 0:
+ case 1:
+ state = data[0];
+ break;
+ default:
+ return -EINVAL;
+ }
+ if (sd->button_state != state) {
+ input_report_key(gspca_dev->input_dev, KEY_CAMERA, state);
+ input_sync(gspca_dev->input_dev);
+ sd->button_state = state;
+ }
+
+ return 0;
+}
+#endif
+
+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_GAIN:
+ setgain(gspca_dev, ctrl->val);
+ break;
+ case V4L2_CID_EXPOSURE:
+ setexposure(gspca_dev, ctrl->val, sd->freq->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;
+
+ gspca_dev->vdev.ctrl_handler = hdl;
+ v4l2_ctrl_handler_init(hdl, 4);
+ if (sd->has_brightness)
+ v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 255, 1, 15);
+ /* max is really 63 but > 50 is not pretty */
+ v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_GAIN, 0, 50, 1, 25);
+ sd->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_EXPOSURE, 0, 32767, 1, 15000);
+ sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
+ V4L2_CID_POWER_LINE_FREQUENCY,
+ V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0, 0);
+
+ if (hdl->error) {
+ pr_err("Could not initialize controls\n");
+ return hdl->error;
+ }
+ v4l2_ctrl_cluster(2, &sd->exposure);
+ return 0;
+}
+
+/* sub-driver description */
+static const struct sd_desc sd_desc = {
+ .name = MODULE_NAME,
+ .config = sd_config,
+ .init = sd_init,
+ .init_controls = sd_init_controls,
+ .isoc_init = sd_isoc_init,
+ .start = sd_start,
+ .stopN = sd_stopN,
+ .dq_callback = sd_dq_callback,
+ .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(0x03e8, 0x0004)}, /* Endpoints/Aox SE401 */
+ {USB_DEVICE(0x0471, 0x030b)}, /* Philips PCVC665K */
+ {USB_DEVICE(0x047d, 0x5001)}, /* Kensington 67014 */
+ {USB_DEVICE(0x047d, 0x5002)}, /* Kensington 6701(5/7) */
+ {USB_DEVICE(0x047d, 0x5003)}, /* Kensington 67016 */
+ {}
+};
+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 int sd_pre_reset(struct usb_interface *intf)
+{
+ return 0;
+}
+
+static int sd_post_reset(struct usb_interface *intf)
+{
+ return 0;
+}
+
+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
+ .pre_reset = sd_pre_reset,
+ .post_reset = sd_post_reset,
+};
+
+module_usb_driver(sd_driver);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 23:12:45 +0000