X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fmedia%2Fusb%2Fgspca%2Fstv0680.c;fp=kernel%2Fdrivers%2Fmedia%2Fusb%2Fgspca%2Fstv0680.c;h=7f94ec74282e3ea42b0c423130419b038a5e3edd;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git

diff --git a/kernel/drivers/media/usb/gspca/stv0680.c b/kernel/drivers/media/usb/gspca/stv0680.c
new file mode 100644
index 000000000..7f94ec742
--- /dev/null
+++ b/kernel/drivers/media/usb/gspca/stv0680.c
@@ -0,0 +1,353 @@
+/*
+ * STV0680 USB Camera Driver
+ *
+ * Copyright (C) 2009 Hans de Goede <hdegoede@redhat.com>
+ *
+ * This module is adapted from the in kernel v4l1 stv680 driver:
+ *
+ *  STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net)
+ *
+ * Thanks to STMicroelectronics for information on the usb commands, and
+ * to Steve Miller at STM for his help and encouragement while I was
+ * writing this driver.
+ *
+ * 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 "stv0680"
+
+#include "gspca.h"
+
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_DESCRIPTION("STV0680 USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+/* specific webcam descriptor */
+struct sd {
+	struct gspca_dev gspca_dev;		/* !! must be the first item */
+	struct v4l2_pix_format mode;
+	u8 orig_mode;
+	u8 video_mode;
+	u8 current_mode;
+};
+
+static int stv_sndctrl(struct gspca_dev *gspca_dev, int set, u8 req, u16 val,
+		       int size)
+{
+	int ret = -1;
+	u8 req_type = 0;
+	unsigned int pipe = 0;
+
+	switch (set) {
+	case 0: /*  0xc1  */
+		req_type = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
+		pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
+		break;
+	case 1: /*  0x41  */
+		req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
+		pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
+		break;
+	case 2:	/*  0x80  */
+		req_type = USB_DIR_IN | USB_RECIP_DEVICE;
+		pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
+		break;
+	case 3:	/*  0x40  */
+		req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+		pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
+		break;
+	}
+
+	ret = usb_control_msg(gspca_dev->dev, pipe,
+			      req, req_type,
+			      val, 0, gspca_dev->usb_buf, size, 500);
+
+	if ((ret < 0) && (req != 0x0a))
+		pr_err("usb_control_msg error %i, request = 0x%x, error = %i\n",
+		       set, req, ret);
+
+	return ret;
+}
+
+static int stv0680_handle_error(struct gspca_dev *gspca_dev, int ret)
+{
+	stv_sndctrl(gspca_dev, 0, 0x80, 0, 0x02); /* Get Last Error */
+	PERR("last error: %i,  command = 0x%x",
+	       gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
+	return ret;
+}
+
+static int stv0680_get_video_mode(struct gspca_dev *gspca_dev)
+{
+	/* Note not sure if this init of usb_buf is really necessary */
+	memset(gspca_dev->usb_buf, 0, 8);
+	gspca_dev->usb_buf[0] = 0x0f;
+
+	if (stv_sndctrl(gspca_dev, 0, 0x87, 0, 0x08) != 0x08) {
+		PERR("Get_Camera_Mode failed");
+		return stv0680_handle_error(gspca_dev, -EIO);
+	}
+
+	return gspca_dev->usb_buf[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */
+}
+
+static int stv0680_set_video_mode(struct gspca_dev *gspca_dev, u8 mode)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	if (sd->current_mode == mode)
+		return 0;
+
+	memset(gspca_dev->usb_buf, 0, 8);
+	gspca_dev->usb_buf[0] = mode;
+
+	if (stv_sndctrl(gspca_dev, 3, 0x07, 0x0100, 0x08) != 0x08) {
+		PERR("Set_Camera_Mode failed");
+		return stv0680_handle_error(gspca_dev, -EIO);
+	}
+
+	/* Verify we got what we've asked for */
+	if (stv0680_get_video_mode(gspca_dev) != mode) {
+		PERR("Error setting camera video mode!");
+		return -EIO;
+	}
+
+	sd->current_mode = mode;
+
+	return 0;
+}
+
+/* this function is called at probe time */
+static int sd_config(struct gspca_dev *gspca_dev,
+			const struct usb_device_id *id)
+{
+	int ret;
+	struct sd *sd = (struct sd *) gspca_dev;
+	struct cam *cam = &gspca_dev->cam;
+
+	/* Give the camera some time to settle, otherwise initialization will
+	   fail on hotplug, and yes it really needs a full second. */
+	msleep(1000);
+
+	/* ping camera to be sure STV0680 is present */
+	if (stv_sndctrl(gspca_dev, 0, 0x88, 0x5678, 0x02) != 0x02 ||
+	    gspca_dev->usb_buf[0] != 0x56 || gspca_dev->usb_buf[1] != 0x78) {
+		PERR("STV(e): camera ping failed!!");
+		return stv0680_handle_error(gspca_dev, -ENODEV);
+	}
+
+	/* get camera descriptor */
+	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x09) != 0x09)
+		return stv0680_handle_error(gspca_dev, -ENODEV);
+
+	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x22) != 0x22 ||
+	    gspca_dev->usb_buf[7] != 0xa0 || gspca_dev->usb_buf[8] != 0x23) {
+		PERR("Could not get descriptor 0200.");
+		return stv0680_handle_error(gspca_dev, -ENODEV);
+	}
+	if (stv_sndctrl(gspca_dev, 0, 0x8a, 0, 0x02) != 0x02)
+		return stv0680_handle_error(gspca_dev, -ENODEV);
+	if (stv_sndctrl(gspca_dev, 0, 0x8b, 0, 0x24) != 0x24)
+		return stv0680_handle_error(gspca_dev, -ENODEV);
+	if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
+		return stv0680_handle_error(gspca_dev, -ENODEV);
+
+	if (!(gspca_dev->usb_buf[7] & 0x09)) {
+		PERR("Camera supports neither CIF nor QVGA mode");
+		return -ENODEV;
+	}
+	if (gspca_dev->usb_buf[7] & 0x01)
+		PDEBUG(D_PROBE, "Camera supports CIF mode");
+	if (gspca_dev->usb_buf[7] & 0x02)
+		PDEBUG(D_PROBE, "Camera supports VGA mode");
+	if (gspca_dev->usb_buf[7] & 0x04)
+		PDEBUG(D_PROBE, "Camera supports QCIF mode");
+	if (gspca_dev->usb_buf[7] & 0x08)
+		PDEBUG(D_PROBE, "Camera supports QVGA mode");
+
+	if (gspca_dev->usb_buf[7] & 0x01)
+		sd->video_mode = 0x00; /* CIF */
+	else
+		sd->video_mode = 0x03; /* QVGA */
+
+	/* FW rev, ASIC rev, sensor ID  */
+	PDEBUG(D_PROBE, "Firmware rev is %i.%i",
+	       gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
+	PDEBUG(D_PROBE, "ASIC rev is %i.%i",
+	       gspca_dev->usb_buf[2], gspca_dev->usb_buf[3]);
+	PDEBUG(D_PROBE, "Sensor ID is %i",
+	       (gspca_dev->usb_buf[4]*16) + (gspca_dev->usb_buf[5]>>4));
+
+
+	ret = stv0680_get_video_mode(gspca_dev);
+	if (ret < 0)
+		return ret;
+	sd->current_mode = sd->orig_mode = ret;
+
+	ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
+	if (ret < 0)
+		return ret;
+
+	/* Get mode details */
+	if (stv_sndctrl(gspca_dev, 0, 0x8f, 0, 0x10) != 0x10)
+		return stv0680_handle_error(gspca_dev, -EIO);
+
+	cam->bulk = 1;
+	cam->bulk_nurbs = 1; /* The cam cannot handle more */
+	cam->bulk_size = (gspca_dev->usb_buf[0] << 24) |
+			 (gspca_dev->usb_buf[1] << 16) |
+			 (gspca_dev->usb_buf[2] << 8) |
+			 (gspca_dev->usb_buf[3]);
+	sd->mode.width = (gspca_dev->usb_buf[4] << 8) |
+			 (gspca_dev->usb_buf[5]);  /* 322, 356, 644 */
+	sd->mode.height = (gspca_dev->usb_buf[6] << 8) |
+			  (gspca_dev->usb_buf[7]); /* 242, 292, 484 */
+	sd->mode.pixelformat = V4L2_PIX_FMT_STV0680;
+	sd->mode.field = V4L2_FIELD_NONE;
+	sd->mode.bytesperline = sd->mode.width;
+	sd->mode.sizeimage = cam->bulk_size;
+	sd->mode.colorspace = V4L2_COLORSPACE_SRGB;
+
+	/* origGain = gspca_dev->usb_buf[12]; */
+
+	cam->cam_mode = &sd->mode;
+	cam->nmodes = 1;
+
+
+	ret = stv0680_set_video_mode(gspca_dev, sd->orig_mode);
+	if (ret < 0)
+		return ret;
+
+	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0100, 0x12) != 0x12 ||
+	    gspca_dev->usb_buf[8] != 0x53 || gspca_dev->usb_buf[9] != 0x05) {
+		pr_err("Could not get descriptor 0100\n");
+		return stv0680_handle_error(gspca_dev, -EIO);
+	}
+
+	return 0;
+}
+
+/* this function is called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+	return 0;
+}
+
+/* -- start the camera -- */
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+	int ret;
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
+	if (ret < 0)
+		return ret;
+
+	if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
+		return stv0680_handle_error(gspca_dev, -EIO);
+
+	/* Start stream at:
+	   0x0000 = CIF (352x288)
+	   0x0100 = VGA (640x480)
+	   0x0300 = QVGA (320x240) */
+	if (stv_sndctrl(gspca_dev, 1, 0x09, sd->video_mode << 8, 0x0) != 0x0)
+		return stv0680_handle_error(gspca_dev, -EIO);
+
+	return 0;
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+	/* This is a high priority command; it stops all lower order cmds */
+	if (stv_sndctrl(gspca_dev, 1, 0x04, 0x0000, 0x0) != 0x0)
+		stv0680_handle_error(gspca_dev, -EIO);
+}
+
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	if (!sd->gspca_dev.present)
+		return;
+
+	stv0680_set_video_mode(gspca_dev, sd->orig_mode);
+}
+
+static void sd_pkt_scan(struct gspca_dev *gspca_dev,
+			u8 *data,
+			int len)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	/* Every now and then the camera sends a 16 byte packet, no idea
+	   what it contains, but it is not image data, when this
+	   happens the frame received before this packet is corrupt,
+	   so discard it. */
+	if (len != sd->mode.sizeimage) {
+		gspca_dev->last_packet_type = DISCARD_PACKET;
+		return;
+	}
+
+	/* Finish the previous frame, we do this upon reception of the next
+	   packet, even though it is already complete so that the strange 16
+	   byte packets send after a corrupt frame can discard it. */
+	gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
+
+	/* Store the just received frame */
+	gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
+}
+
+/* sub-driver description */
+static const struct sd_desc sd_desc = {
+	.name = MODULE_NAME,
+	.config = sd_config,
+	.init = sd_init,
+	.start = sd_start,
+	.stopN = sd_stopN,
+	.stop0 = sd_stop0,
+	.pkt_scan = sd_pkt_scan,
+};
+
+/* -- module initialisation -- */
+static const struct usb_device_id device_table[] = {
+	{USB_DEVICE(0x0553, 0x0202)},
+	{USB_DEVICE(0x041e, 0x4007)},
+	{}
+};
+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);