V4L/DVB (8152): Initial release of gspca with only one driver.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 562 insertions, 0 deletions

diff --git a/drivers/media/video/gspca/stk014.c b/drivers/media/video/gspca/stk014.c
new file mode 100644
index 00000000000..8fd4ff01362
--- /dev/null
+++ b/drivers/media/video/gspca/stk014.c
@@ -0,0 +1,562 @@
+/*
+ * Syntek DV4000 (STK014) subdriver
+ *
+ * Copyright (C) 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
+ * 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 MODULE_NAME "stk014"
+
+#include "gspca.h"
+#include "jpeg.h"
+
+#define DRIVER_VERSION_NUMBER	KERNEL_VERSION(0, 0, 22)
+static const char version[] = "0.0.22";
+
+MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
+MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+/* specific webcam descriptor */
+struct sd {
+	struct gspca_dev gspca_dev;	/* !! must be the first item */
+
+	unsigned char brightness;
+	unsigned char contrast;
+	unsigned char colors;
+};
+
+/* global parameters */
+static int lightfreq = 50;
+static int sd_quant = 7;		/* <= 4 KO - 7: good (enough!) */
+
+/* V4L2 controls supported by the driver */
+static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
+
+static struct ctrl sd_ctrls[] = {
+#define SD_BRIGHTNESS 0
+	{
+	    {
+		.id      = V4L2_CID_BRIGHTNESS,
+		.type    = V4L2_CTRL_TYPE_INTEGER,
+		.name    = "Brightness",
+		.minimum = 0,
+		.maximum = 255,
+		.step    = 1,
+		.default_value = 127,
+	    },
+	    .set = sd_setbrightness,
+	    .get = sd_getbrightness,
+	},
+#define SD_CONTRAST 1
+	{
+	    {
+		.id      = V4L2_CID_CONTRAST,
+		.type    = V4L2_CTRL_TYPE_INTEGER,
+		.name    = "Contrast",
+		.minimum = 0,
+		.maximum = 255,
+		.step    = 1,
+		.default_value = 127,
+	    },
+	    .set = sd_setcontrast,
+	    .get = sd_getcontrast,
+	},
+#define SD_COLOR 2
+	{
+	    {
+		.id      = V4L2_CID_SATURATION,
+		.type    = V4L2_CTRL_TYPE_INTEGER,
+		.name    = "Saturation",
+		.minimum = 0,
+		.maximum = 255,
+		.step    = 1,
+		.default_value = 127,
+	    },
+	    .set = sd_setcolors,
+	    .get = sd_getcolors,
+	},
+};
+
+static struct cam_mode vga_mode[] = {
+	{V4L2_PIX_FMT_JPEG, 320, 240},
+	{V4L2_PIX_FMT_JPEG, 640, 480},
+};
+
+/* -- read a register -- */
+static int reg_read(struct gspca_dev *gspca_dev,
+			__u16 index, __u8 *buf)
+{
+	int ret;
+	struct usb_device *dev = gspca_dev->dev;
+
+	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+			0x00,
+			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			0x00,
+			index,
+			buf, 1,
+			500);
+	if (ret < 0)
+		PDEBUG(D_ERR, "reg_read err %d", ret);
+	return ret;
+}
+
+/* -- write a register -- */
+static int reg_write(struct gspca_dev *gspca_dev,
+			__u16 index, __u16 value)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	int ret;
+
+	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+			0x01,
+			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			value,
+			index,
+			NULL,
+			0,
+			500);
+	if (ret < 0)
+		PDEBUG(D_ERR, "reg_write err %d", ret);
+	return ret;
+}
+
+/* -- get a value -- */
+static int rcv_val(struct gspca_dev *gspca_dev,
+			int ads,
+			int len)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	int alen, ret;
+	unsigned char bulk_buf[4];
+
+	reg_write(gspca_dev, 0x634, (ads >> 16) & 0xff);
+	reg_write(gspca_dev, 0x635, (ads >> 8) & 0xff);
+	reg_write(gspca_dev, 0x636, ads & 0xff);
+	reg_write(gspca_dev, 0x637, 0);
+	reg_write(gspca_dev, 0x638, len & 0xff);
+	reg_write(gspca_dev, 0x639, len >> 8);
+	reg_write(gspca_dev, 0x63a, 0);
+	reg_write(gspca_dev, 0x63b, 0);
+	reg_write(gspca_dev, 0x630, 5);
+	if (len > sizeof bulk_buf)
+		return -1;
+	ret = usb_bulk_msg(dev,
+			usb_rcvbulkpipe(dev, 5),
+			bulk_buf,
+			len,
+			&alen,
+			500);	/* timeout in milliseconds */
+	return ret;
+}
+
+/* -- send a value -- */
+static int snd_val(struct gspca_dev *gspca_dev,
+			int ads,
+			unsigned int val)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	int alen, ret;
+	__u8 value, seq;
+	unsigned char bulk_buf[4];
+
+	if (ads == 0x003f08) {
+		ret = reg_read(gspca_dev, 0x0704, &value);
+		if (ret < 0)
+			goto ko;
+		ret = reg_read(gspca_dev, 0x0705, &seq);
+		if (ret < 0)
+			goto ko;
+		ret = reg_read(gspca_dev, 0x0650, &value);
+		if (ret < 0)
+			goto ko;
+		reg_write(gspca_dev, 0x654, seq);
+	} else
+		reg_write(gspca_dev, 0x654, (ads >> 16) & 0xff);
+	reg_write(gspca_dev, 0x655, (ads >> 8) & 0xff);
+	reg_write(gspca_dev, 0x656, ads & 0xff);
+	reg_write(gspca_dev, 0x657, 0);
+	reg_write(gspca_dev, 0x658, 0x04);	/* size */
+	reg_write(gspca_dev, 0x659, 0);
+	reg_write(gspca_dev, 0x65a, 0);
+	reg_write(gspca_dev, 0x65b, 0);
+	reg_write(gspca_dev, 0x650, 5);
+	bulk_buf[0] = (val >> 24) & 0xff;
+	bulk_buf[1] = (val >> 16) & 0xff;
+	bulk_buf[2] = (val >> 8) & 0xff;
+	bulk_buf[3] = val & 0xff;
+	ret = usb_bulk_msg(dev,
+			usb_sndbulkpipe(dev, 6),
+			bulk_buf,
+			4,
+			&alen,
+			500);	/* timeout in milliseconds */
+	if (ret < 0)
+		goto ko;
+	if (ads == 0x003f08) {
+		seq += 4;
+		seq &= 0x3f;
+		reg_write(gspca_dev, 0x705, seq);
+	}
+	return ret;
+ko:
+	PDEBUG(D_ERR, "snd_val err %d", ret);
+	return ret;
+}
+
+/* set a camera parameter */
+static int set_par(struct gspca_dev *gspca_dev,
+		   int parval)
+{
+	return snd_val(gspca_dev, 0x003f08, parval);
+}
+
+static void setbrightness(struct gspca_dev *gspca_dev)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	int parval;
+
+	PDEBUG(D_CONF, "brightness: %d", sd->brightness);
+	parval = 0x06000000		/* whiteness */
+		+ (sd->brightness << 16);
+	set_par(gspca_dev, parval);
+}
+
+static void setcontrast(struct gspca_dev *gspca_dev)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	int parval;
+
+	PDEBUG(D_CONF, "contrast: %d", sd->contrast);
+	parval = 0x07000000		/* contrast */
+		+ (sd->contrast << 16);
+	set_par(gspca_dev, parval);
+}
+
+static void setcolors(struct gspca_dev *gspca_dev)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	int parval;
+
+	PDEBUG(D_CONF, "saturation: %d",
+		sd->colors);
+	parval = 0x08000000		/* saturation */
+		+ (sd->colors << 16);
+	set_par(gspca_dev, parval);
+}
+
+/* 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 = &gspca_dev->cam;
+
+	cam->dev_name = (char *) id->driver_info;
+	cam->epaddr = 0x02;
+	gspca_dev->cam.cam_mode = vga_mode;
+	gspca_dev->cam.nmodes = sizeof vga_mode / sizeof vga_mode[0];
+	sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
+	sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
+	sd->colors = sd_ctrls[SD_COLOR].qctrl.default_value;
+	return 0;
+}
+
+/* this function is called at open time */
+static int sd_open(struct gspca_dev *gspca_dev)
+{
+	__u8 value;
+	int ret;
+
+	/* check if the device responds */
+	usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
+	ret = reg_read(gspca_dev, 0x0740, &value);
+	if (ret < 0)
+		return ret;
+	if (value != 0xff) {
+		PDEBUG(D_ERR|D_STREAM, "init reg: 0x%02x", value);
+		return -1;
+	}
+	return 0;
+}
+
+/* -- start the camera -- */
+static void sd_start(struct gspca_dev *gspca_dev)
+{
+	__u8 dum;
+	int ret, value;
+
+	/* work on alternate 1 */
+	usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
+
+	set_par(gspca_dev, 0x10000000);
+	set_par(gspca_dev, 0x00000000);
+	set_par(gspca_dev, 0x8002e001);
+	set_par(gspca_dev, 0x14000000);
+	if (gspca_dev->width > 320)
+		value = 0x8002e001;		/* 640x480 */
+	else
+		value = 0x4001f000;		/* 320x240 */
+	set_par(gspca_dev, value);
+	ret = usb_set_interface(gspca_dev->dev,
+					gspca_dev->iface,
+					gspca_dev->alt);
+	if (ret < 0)
+		goto out;
+	ret = reg_read(gspca_dev, 0x0630, &dum);
+	if (ret < 0)
+		goto out;
+	rcv_val(gspca_dev, 0x000020, 4);	/* << (value ff ff ff ff) */
+	ret = reg_read(gspca_dev, 0x0650, &dum);
+	if (ret < 0)
+		goto out;
+	snd_val(gspca_dev, 0x000020, 0xffffffff);
+	reg_write(gspca_dev, 0x0620, 0);
+	reg_write(gspca_dev, 0x0630, 0);
+	reg_write(gspca_dev, 0x0640, 0);
+	reg_write(gspca_dev, 0x0650, 0);
+	reg_write(gspca_dev, 0x0660, 0);
+	setbrightness(gspca_dev);		/* whiteness */
+	setcontrast(gspca_dev);			/* contrast */
+	setcolors(gspca_dev);			/* saturation */
+	set_par(gspca_dev, 0x09800000);		/* Red ? */
+	set_par(gspca_dev, 0x0a800000);		/* Green ? */
+	set_par(gspca_dev, 0x0b800000);		/* Blue ? */
+	set_par(gspca_dev, 0x0d030000);		/* Gamma ? */
+	set_par(gspca_dev, lightfreq == 60
+			? 0x33780000		/* 60 Hz */
+			: 0x33640000);		/* 50 Hz */
+
+	/* start the video flow */
+	set_par(gspca_dev, 0x01000000);
+	set_par(gspca_dev, 0x01000000);
+	PDEBUG(D_STREAM, "camera started alt: 0x%02x", gspca_dev->alt);
+	return;
+out:
+	PDEBUG(D_ERR|D_STREAM, "camera start err %d", ret);
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	__u8 value;
+
+	set_par(gspca_dev, 0x02000000);
+	set_par(gspca_dev, 0x02000000);
+	usb_set_interface(dev, gspca_dev->iface, 1);
+	reg_read(gspca_dev, 0x0630, &value);
+	rcv_val(gspca_dev, 0x000020, 4);	/* << (value ff ff ff ff) */
+	reg_read(gspca_dev, 0x0650, &value);
+	snd_val(gspca_dev, 0x000020, 0xffffffff);
+	reg_write(gspca_dev, 0x0620, 0);
+	reg_write(gspca_dev, 0x0630, 0);
+	reg_write(gspca_dev, 0x0640, 0);
+	reg_write(gspca_dev, 0x0650, 0);
+	reg_write(gspca_dev, 0x0660, 0);
+	PDEBUG(D_STREAM, "camera stopped");
+}
+
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+}
+
+static void sd_close(struct gspca_dev *gspca_dev)
+{
+}
+
+static void sd_pkt_scan(struct gspca_dev *gspca_dev,
+			struct gspca_frame *frame,	/* target */
+			unsigned char *data,		/* isoc packet */
+			int len)			/* iso packet length */
+{
+	int l;
+
+	/* a frame starts with:
+	 *	- 0xff 0xfe
+	 *	- 0x08 0x00	// length (little endian ?!)
+	 *	- 4 bytes = size of whole frame (big endian - including header)
+	 *	- 0x00 0x0c
+	 *	- 0xff 0xd8
+	 *	- ..	JPEG image with escape sequences (ff 00)
+	 */
+	if (data[0] == 0xff && data[1] == 0xfe) {
+		if (gspca_dev->last_packet_type == INTER_PACKET) {
+			PDEBUG(D_ERR|D_FRAM, "sof actual l: %d init l: %d",
+				frame->data_end - frame->data,
+				frame->v4l2_buf.bytesused);
+		}
+
+		/* put the JPEG headaer */
+		jpeg_put_header(gspca_dev, frame, sd_quant, 0x22);
+
+		/* beginning of the frame */
+#define STKHDRSZ 12
+		l = (data[4] << 24)		/* frame size */
+			+ (data[5] << 16)
+			+ (data[6] << 8)
+			+ data[7]
+			- STKHDRSZ
+			+ (frame->data_end - frame->data)
+			+ 2;			/* EOF (ff d9) */
+		gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+				data + STKHDRSZ, len - STKHDRSZ);
+#undef STKHDRSZ
+		frame->v4l2_buf.bytesused = l;
+		return;
+	}
+	if (gspca_dev->last_packet_type != INTER_PACKET) {
+		if (gspca_dev->last_packet_type == LAST_PACKET) {
+			PDEBUG(D_ERR|D_PACK, "mof actual l: %d init l: %d",
+				frame->data_end - frame->data,
+				frame->v4l2_buf.bytesused);
+		}
+		return;
+	}
+
+	/* intermediate packet */
+	l = frame->data_end - frame->data;
+	if (len < frame->v4l2_buf.bytesused - 2 - l) {
+		gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+				data, len);
+		return;
+	}
+
+	/* last packet */
+	if (len > frame->v4l2_buf.bytesused - 2 - l)
+		len = frame->v4l2_buf.bytesused - 2 - l;
+	gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
+	gspca_frame_add(gspca_dev, LAST_PACKET, frame, "\xff\xd9", 2);
+}
+
+static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	sd->brightness = val;
+	if (gspca_dev->streaming)
+		setbrightness(gspca_dev);
+	return 0;
+}
+
+static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	*val = sd->brightness;
+	return 0;
+}
+
+static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	sd->contrast = val;
+	if (gspca_dev->streaming)
+		setcontrast(gspca_dev);
+	return 0;
+}
+
+static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	*val = sd->contrast;
+	return 0;
+}
+
+static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	sd->colors = val;
+	if (gspca_dev->streaming)
+		setcolors(gspca_dev);
+	return 0;
+}
+
+static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	*val = sd->colors;
+	return 0;
+}
+
+/* sub-driver description */
+static struct sd_desc sd_desc = {
+	.name = MODULE_NAME,
+	.ctrls = sd_ctrls,
+	.nctrls = sizeof sd_ctrls / sizeof sd_ctrls[0],
+	.config = sd_config,
+	.open = sd_open,
+	.start = sd_start,
+	.stopN = sd_stopN,
+	.stop0 = sd_stop0,
+	.close = sd_close,
+	.pkt_scan = sd_pkt_scan,
+};
+
+/* -- module initialisation -- */
+#define DVNM(name) .driver_info = (kernel_ulong_t) name
+static __devinitdata struct usb_device_id device_table[] = {
+	{USB_DEVICE(0x05e1, 0x0893), DVNM("Syntek DV4000")},
+	{}
+};
+MODULE_DEVICE_TABLE(usb, device_table);
+
+/* -- device connect -- */
+static int sd_probe(struct usb_interface *intf,
+			const struct usb_device_id *id)
+{
+	PDEBUG(D_PROBE, "camera probe");
+	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd));
+}
+
+static struct usb_driver sd_driver = {
+	.name = MODULE_NAME,
+	.id_table = device_table,
+	.probe = sd_probe,
+	.disconnect = gspca_disconnect,
+};
+
+/* -- module insert / remove -- */
+static int __init sd_mod_init(void)
+{
+	if (usb_register(&sd_driver) < 0)
+		return -1;
+	info("v%s registered", version);
+	return 0;
+}
+static void __exit sd_mod_exit(void)
+{
+	usb_deregister(&sd_driver);
+	info("deregistered");
+}
+
+module_init(sd_mod_init);
+module_exit(sd_mod_exit);
+
+module_param(lightfreq, int, 0644);
+MODULE_PARM_DESC(lightfreq, "Light frequency 50 or 60 Hz");
+module_param_named(quant, sd_quant, int, 0644);
+MODULE_PARM_DESC(quant, "Quantization index (0..8)");