Staging: go7007: add sensoray 2250/2251 support

This is the driver for the Sensoray 2250/2251 USB devices added to
go7007 driver.
Signed-off-by: NPete Eberlein <pete@sensoray.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/go7007/Kconfig

@@ -25,3 +25,13 @@ config VIDEO_GO7007_USB
 	  To compile this driver as a module, choose M here: the
 	  module will be called go7007-usb
 
+config VIDEO_GO7007_USB_S2250_BOARD
+	tristate "Sensoray 2250/2251 support"
+	depends on VIDEO_GO7007_USB && DVB_USB
+	default N
+	---help---
+	  This is a video4linux driver for the Sensoray 2250/2251 device
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called s2250-board
+

drivers/staging/go7007/Makefile

@@ -5,14 +5,23 @@
 
 obj-$(CONFIG_VIDEO_GO7007) += go7007.o
 obj-$(CONFIG_VIDEO_GO7007_USB) += go7007-usb.o
+obj-$(CONFIG_VIDEO_GO7007_USB_S2250_BOARD) += s2250.o
 
-go7007-objs += go7007-v4l2.o go7007-driver.o go7007-i2c.o go7007-fw.o snd-go7007.o
+go7007-objs += go7007-v4l2.o go7007-driver.o go7007-i2c.o go7007-fw.o \
+		snd-go7007.o wis-saa7113.o
 
+s2250-objs += s2250-board.o s2250-loader.o
 
-#ifneq ($(SAA7134_BUILD),)
-#obj-m += saa7134-go7007.o
+# Uncompile when the saa7134 patches get into upstream
+#ifneq ($(CONFIG_VIDEO_SAA7134),)
+#obj-$(CONFIG_VIDEO_SAA7134) += saa7134-go7007.o
+#EXTRA_CFLAGS += -Idrivers/media/video/saa7134
 #endif
 
+ifneq ($(CONFIG_VIDEO_GO7007_USB_S2250_BOARD),)
+EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-usb
+endif
+
 EXTRA_CFLAGS += -Idrivers/staging/saa7134
 EXTRA_CFLAGS += -Idrivers/media/dvb/frontends
 EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core

drivers/staging/go7007/go7007-driver.c

@@ -217,6 +217,9 @@ static int init_i2c_module(struct i2c_adapter *adapter, int id, int addr)
 	case I2C_DRIVERID_WIS_OV7640:
 		modname = "wis-ov7640";
 		break;
+	case I2C_DRIVERID_S2250:
+		modname = "s2250-board";
+		break;
 	default:
 		modname = NULL;
 		break;

drivers/staging/go7007/go7007-priv.h

@@ -40,6 +40,7 @@ struct go7007;
 #define GO7007_BOARDID_LIFEVIEW_LR192	21 /* TV Walker Ultra */
 #define GO7007_BOARDID_ENDURA		22
 #define GO7007_BOARDID_ADLINK_MPG24	23
+#define GO7007_BOARDID_SENSORAY_2250	24 /* Sensoray 2250/2251 */
 
 /* Various characteristics of each board */
 #define GO7007_BOARD_HAS_AUDIO		(1<<0)

drivers/staging/go7007/go7007-usb.c

@@ -398,6 +398,41 @@ static struct go7007_usb_board board_adlink_mpg24 = {
 	},
 };
 
+static struct go7007_usb_board board_sensoray_2250 = {
+	.flags		= GO7007_USB_EZUSB | GO7007_USB_EZUSB_I2C,
+	.main_info	= {
+		.firmware	 = "go7007tv.bin",
+		.audio_flags	 = GO7007_AUDIO_I2S_MODE_1 |
+					GO7007_AUDIO_I2S_MASTER |
+					GO7007_AUDIO_WORD_16,
+		.flags		 = GO7007_BOARD_HAS_AUDIO,
+		.audio_rate	 = 48000,
+		.audio_bclk_div	 = 8,
+		.audio_main_div	 = 2,
+		.hpi_buffer_cap  = 7,
+		.sensor_flags	 = GO7007_SENSOR_656 |
+					GO7007_SENSOR_TV,
+		.num_i2c_devs	 = 1,
+		.i2c_devs	 = {
+			{
+				.id	= I2C_DRIVERID_S2250,
+				.addr	= 0x34,
+			},
+		},
+		.num_inputs	 = 2,
+		.inputs 	 = {
+			{
+				.video_input	= 0,
+				.name		= "Composite",
+			},
+			{
+				.video_input	= 1,
+				.name		= "S-Video",
+			},
+		},
+	},
+};
+
 static struct usb_device_id go7007_usb_id_table[] = {
 	{
 		.match_flags	= USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION |
@@ -491,6 +526,14 @@ static struct usb_device_id go7007_usb_id_table[] = {
 		.bcdDevice_hi	= 0x1,
 		.driver_info	= (kernel_ulong_t)GO7007_BOARDID_LIFEVIEW_LR192,
 	},
+	{
+		.match_flags	= USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION,
+		.idVendor	= 0x1943,  /* Vendor ID Sensoray */
+		.idProduct	= 0x2250,  /* Product ID of 2250/2251 */
+		.bcdDevice_lo	= 0x1,
+		.bcdDevice_hi	= 0x1,
+		.driver_info	= (kernel_ulong_t)GO7007_BOARDID_SENSORAY_2250,
+	},
 	{ }					/* Terminating entry */
 };
 
@@ -965,6 +1008,11 @@ static int go7007_usb_probe(struct usb_interface *intf,
 		name = "Lifeview TV Walker Ultra";
 		board = &board_lifeview_lr192;
 		break;
+	case GO7007_BOARDID_SENSORAY_2250:
+		printk(KERN_INFO "Sensoray 2250 found\n");
+		name = "Sensoray 2250/2251\n";
+		board = &board_sensoray_2250;
+		break;
 	default:
 		printk(KERN_ERR "go7007-usb: unknown board ID %d!\n",
 				(unsigned int)id->driver_info);

drivers/staging/go7007/s2250-board.c

+/*
+ * Copyright (C) 2008 Sensoray Company Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include "go7007-priv.h"
+#include "wis-i2c.h"
+
+extern int s2250loader_init(void);
+extern void s2250loader_cleanup(void);
+
+#define TLV320_ADDRESS      0x34
+#define S2250_VIDDEC        0x86
+#define VPX322_ADDR_ANALOGCONTROL1	0x02
+#define VPX322_ADDR_BRIGHTNESS0		0x0127
+#define VPX322_ADDR_BRIGHTNESS1		0x0131
+#define VPX322_ADDR_CONTRAST0		0x0128
+#define VPX322_ADDR_CONTRAST1		0x0132
+#define VPX322_ADDR_HUE			0x00dc
+#define VPX322_ADDR_SAT	 	        0x0030
+
+struct go7007_usb_board {
+	unsigned int flags;
+	struct go7007_board_info main_info;
+};
+
+struct go7007_usb {
+	struct go7007_usb_board *board;
+	struct semaphore i2c_lock;
+	struct usb_device *usbdev;
+	struct urb *video_urbs[8];
+	struct urb *audio_urbs[8];
+	struct urb *intr_urb;
+};
+
+static unsigned char aud_regs[] = {
+	0x1e, 0x00,
+	0x00, 0x17,
+	0x02, 0x17,
+	0x04, 0xf9,
+	0x06, 0xf9,
+	0x08, 0x02,
+	0x0a, 0x00,
+	0x0c, 0x00,
+	0x0a, 0x00,
+	0x0c, 0x00,
+	0x0e, 0x02,
+	0x10, 0x00,
+	0x12, 0x01,
+	0x00, 0x00,
+};
+
+
+static unsigned char vid_regs[] = {
+	0xF2, 0x0f,
+	0xAA, 0x00,
+	0xF8, 0xff,
+	0x00, 0x00,
+};
+
+static u16 vid_regs_fp[] = {
+	0x028, 0x067,
+	0x120, 0x016,
+	0x121, 0xcF2,
+	0x122, 0x0F2,
+	0x123, 0x00c,
+	0x124, 0x2d0,
+	0x125, 0x2e0,
+	0x126, 0x004,
+	0x128, 0x1E0,
+	0x12A, 0x016,
+	0x12B, 0x0F2,
+	0x12C, 0x0F2,
+	0x12D, 0x00c,
+	0x12E, 0x2d0,
+	0x12F, 0x2e0,
+	0x130, 0x004,
+	0x132, 0x1E0,
+	0x140, 0x060,
+	0x153, 0x00C,
+	0x154, 0x200,
+	0x150, 0x801,
+	0x000, 0x000
+};
+
+/* PAL specific values */
+static u16 vid_regs_fp_pal[] =
+{
+	0x120, 0x017,
+	0x121, 0xd22,
+	0x122, 0x122,
+	0x12A, 0x017,
+	0x12B, 0x122,
+	0x12C, 0x122,
+	0x140, 0x060,
+	0x000, 0x000,
+};
+
+struct s2250 {
+	int std;
+	int input;
+	int brightness;
+	int contrast;
+	int saturation;
+	int hue;
+	int reg12b_val;
+	int audio_input;
+};
+
+/* from go7007-usb.c which is Copyright (C) 2005-2006 Micronas USA Inc.*/
+static int go7007_usb_vendor_request(struct go7007 *go, u16 request,
+	u16 value, u16 index, void *transfer_buffer, int length, int in)
+{
+	struct go7007_usb *usb = go->hpi_context;
+	int timeout = 5000;
+
+	if (in) {
+		return usb_control_msg(usb->usbdev,
+				usb_rcvctrlpipe(usb->usbdev, 0), request,
+				USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+				value, index, transfer_buffer, length, timeout);
+	} else {
+		return usb_control_msg(usb->usbdev,
+				usb_sndctrlpipe(usb->usbdev, 0), request,
+				USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+				value, index, transfer_buffer, length, timeout);
+	}
+}
+/* end from go7007-usb.c which is Copyright (C) 2005-2006 Micronas USA Inc.*/
+
+static int write_reg(struct i2c_client *client, u8 reg, u8 value)
+{
+	struct go7007 *go = i2c_get_adapdata(client->adapter);
+	struct go7007_usb *usb = go->hpi_context;
+	int rc;
+	int dev_addr = client->addr;
+	u8 *buf;
+
+	if (go == NULL)
+		return -ENODEV;
+
+	if (go->status == STATUS_SHUTDOWN)
+		return -EBUSY;
+
+	buf = kzalloc(16, GFP_KERNEL);
+	if (buf == NULL)
+		return -ENOMEM;
+
+	if (down_interruptible(&usb->i2c_lock) != 0) {
+		printk(KERN_INFO "i2c lock failed\n");
+		return -EINTR;
+	}
+	rc = go7007_usb_vendor_request(go, 0x55, dev_addr,
+				       (reg<<8 | value),
+				       buf,
+				       16, 1);
+
+	up(&usb->i2c_lock);
+	kfree(buf);
+	return rc;
+}
+
+static int write_reg_fp(struct i2c_client *client, u16 addr, u16 val)
+{
+	struct go7007 *go = i2c_get_adapdata(client->adapter);
+	struct go7007_usb *usb = go->hpi_context;
+	u8 *buf;
+	struct s2250 *dec = i2c_get_clientdata(client);
+
+	if (go == NULL)
+		return -ENODEV;
+
+	if (go->status == STATUS_SHUTDOWN)
+		return -EBUSY;
+
+	buf = kzalloc(16, GFP_KERNEL);
+
+	if (buf == NULL)
+		return -ENOMEM;
+
+
+
+	memset(buf, 0xcd, 6);
+
+	if (down_interruptible(&usb->i2c_lock) != 0) {
+		printk(KERN_INFO "i2c lock failed\n");
+		return -EINTR;
+	}
+	if (go7007_usb_vendor_request(go, 0x57, addr, val, buf, 16, 1) < 0)
+		return -EFAULT;
+
+	up(&usb->i2c_lock);
+	if (buf[0] == 0) {
+		unsigned int subaddr, val_read;
+
+		subaddr = (buf[4] << 8) + buf[5];
+		val_read = (buf[2] << 8) + buf[3];
+		if (val_read != val) {
+			printk(KERN_INFO "invalid fp write %x %x\n",
+			       val_read, val);
+			return -EFAULT;
+		}
+		if (subaddr != addr) {
+			printk(KERN_INFO "invalid fp write addr %x %x\n",
+			       subaddr, addr);
+			return -EFAULT;
+		}
+	} else
+		return -EFAULT;
+
+	/* save last 12b value */
+	if (addr == 0x12b)
+		dec->reg12b_val = val;
+
+	return 0;
+}
+
+static int write_regs(struct i2c_client *client, u8 *regs)
+{
+	int i;
+
+	for (i = 0; !((regs[i] == 0x00) && (regs[i+1] == 0x00)); i += 2) {
+		if (write_reg(client, regs[i], regs[i+1]) < 0) {
+			printk(KERN_INFO "s2250: failed\n");
+			return -1;
+		}
+	}
+	return 0;
+}
+
+static int write_regs_fp(struct i2c_client *client, u16 *regs)
+{
+	int i;
+
+	for (i = 0; !((regs[i] == 0x00) && (regs[i+1] == 0x00)); i += 2) {
+		if (write_reg_fp(client, regs[i], regs[i+1]) < 0) {
+			printk(KERN_INFO "s2250: failed fp\n");
+			return -1;
+		}
+	}
+	return 0;
+}
+
+
+static int s2250_command(struct i2c_client *client,
+			 unsigned int cmd, void *arg)
+{
+	struct s2250 *dec = i2c_get_clientdata(client);
+
+	switch (cmd) {
+	case VIDIOC_S_INPUT:
+	{
+		int vidsys;
+		int *input = arg;
+
+		vidsys = (dec->std == V4L2_STD_NTSC) ? 0x01 : 0x00;
+		if (*input == 0) {
+			/* composite */
+			write_reg_fp(client, 0x20, 0x020 | vidsys);
+			write_reg_fp(client, 0x21, 0x662);
+			write_reg_fp(client, 0x140, 0x060);
+		} else {
+			/* S-Video */
+			write_reg_fp(client, 0x20, 0x040 | vidsys);
+			write_reg_fp(client, 0x21, 0x666);
+			write_reg_fp(client, 0x140, 0x060);
+		}
+		dec->input = *input;
+		break;
+	}
+	case VIDIOC_S_STD:
+	{
+		v4l2_std_id *std = arg;
+		u16 vidsource;
+
+		vidsource = (dec->input == 1) ? 0x040 : 0x020;
+		dec->std = *std;
+		switch (dec->std) {
+		case V4L2_STD_NTSC:
+			write_regs_fp(client, vid_regs_fp);
+			write_reg_fp(client, 0x20, vidsource | 1);
+			break;
+		case V4L2_STD_PAL:
+			write_regs_fp(client, vid_regs_fp);
+			write_regs_fp(client, vid_regs_fp_pal);
+			write_reg_fp(client, 0x20, vidsource);
+			break;
+		default:
+			return -EINVAL;
+		}
+		break;
+	}
+	case VIDIOC_QUERYCTRL:
+	{
+		struct v4l2_queryctrl *ctrl = arg;
+		static const u32 user_ctrls[] = {
+			V4L2_CID_BRIGHTNESS,
+			V4L2_CID_CONTRAST,
+			V4L2_CID_SATURATION,
+			V4L2_CID_HUE,
+			0
+		};
+		static const u32 *ctrl_classes[] = {
+			user_ctrls,
+			NULL
+		};
+
+		ctrl->id = v4l2_ctrl_next(ctrl_classes, ctrl->id);
+		switch (ctrl->id) {
+		case V4L2_CID_BRIGHTNESS:
+			v4l2_ctrl_query_fill(ctrl, 0, 100, 1, 50);
+			break;
+		case V4L2_CID_CONTRAST:
+			v4l2_ctrl_query_fill(ctrl, 0, 100, 1, 50);
+			break;
+		case V4L2_CID_SATURATION:
+			v4l2_ctrl_query_fill(ctrl, 0, 100, 1, 50);
+			break;
+		case V4L2_CID_HUE:
+			v4l2_ctrl_query_fill(ctrl, -50, 50, 1, 0);
+			break;
+		default:
+			ctrl->name[0] = '\0';
+			return -EINVAL;
+		}
+		break;
+	}
+	case VIDIOC_S_CTRL:
+	{
+		struct v4l2_control *ctrl = arg;
+		int value1;
+
+		switch (ctrl->id) {
+		case V4L2_CID_BRIGHTNESS:
+			printk(KERN_INFO "s2250: future setting\n");
+			return -EINVAL;
+		case V4L2_CID_CONTRAST:
+			printk(KERN_INFO "s2250: future setting\n");
+			return -EINVAL;
+			break;
+		case V4L2_CID_SATURATION:
+			if (ctrl->value > 127)
+				dec->saturation = 127;
+			else if (ctrl->value < 0)
+				dec->saturation = 0;
+			else
+				dec->saturation = ctrl->value;
+
+			value1 = dec->saturation * 4140 / 100;
+			if (value1 > 4094)
+				value1 = 4094;
+			write_reg_fp(client, VPX322_ADDR_SAT, value1);
+			break;
+		case V4L2_CID_HUE:
+			if (ctrl->value > 50)
+				dec->hue = 50;
+			else if (ctrl->value < -50)
+				dec->hue = -50;
+			else
+				dec->hue = ctrl->value;
+			/* clamp the hue range */
+			value1 = dec->hue * 280 / 50;
+			write_reg_fp(client, VPX322_ADDR_HUE, value1);
+			break;
+		}
+		break;
+	}
+	case VIDIOC_G_CTRL:
+	{
+		struct v4l2_control *ctrl = arg;
+
+		switch (ctrl->id) {
+		case V4L2_CID_BRIGHTNESS:
+			ctrl->value = dec->brightness;
+			break;
+		case V4L2_CID_CONTRAST:
+			ctrl->value = dec->contrast;
+			break;
+		case V4L2_CID_SATURATION:
+			ctrl->value = dec->saturation;
+			break;
+		case V4L2_CID_HUE:
+			ctrl->value = dec->hue;
+			break;
+		}
+		break;
+	}
+	case VIDIOC_S_FMT:
+	{
+		struct v4l2_format *fmt = arg;
+		if (fmt->fmt.pix.height < 640) {
+			write_reg_fp(client, 0x12b, dec->reg12b_val | 0x400);
+			write_reg_fp(client, 0x140, 0x060);
+		} else {
+			write_reg_fp(client, 0x12b, dec->reg12b_val & ~0x400);
+			write_reg_fp(client, 0x140, 0x060);
+		}
+		return 0;
+	}
+	case VIDIOC_G_AUDIO:
+	{
+		struct v4l2_audio *audio = arg;
+
+		memset(audio, 0, sizeof(*audio));
+		audio->index = dec->audio_input;
+		/* fall through */
+	}
+	case VIDIOC_ENUMAUDIO:
+	{
+		struct v4l2_audio *audio = arg;
+
+		switch (audio->index) {
+		case 0:
+			strcpy(audio->name, "Line In");
+			break;
+		case 1:
+			strcpy(audio->name, "Mic");
+			break;
+		case 2:
+			strcpy(audio->name, "Mic Boost");
+			break;
+		default:
+			audio->name[0] = '\0';
+			return 0;
+		}
+		audio->capability = V4L2_AUDCAP_STEREO;
+		audio->mode = 0;
+		return 0;
+	}
+	case VIDIOC_S_AUDIO:
+	{
+		struct v4l2_audio *audio = arg;
+
+		client->addr = TLV320_ADDRESS;
+		switch (audio->index) {
+		case 0:
+			write_reg(client, 0x08, 0x02); /* Line In */
+			break;
+		case 1:
+			write_reg(client, 0x08, 0x04); /* Mic */
+			break;
+		case 2:
+			write_reg(client, 0x08, 0x05); /* Mic Boost */
+			break;
+		default:
+			return -EINVAL;
+		}
+		dec->audio_input = audio->index;
+		return 0;
+	}
+
+	default:
+		printk(KERN_INFO "s2250: unknown command 0x%x\n", cmd);
+		break;
+	}
+	return 0;
+}
+
+static struct i2c_driver s2250_driver;
+
+static struct i2c_client s2250_client_templ = {
+	.name		= "Sensoray 2250",
+	.driver		= &s2250_driver,
+};
+
+static int s2250_detect(struct i2c_adapter *adapter, int addr, int kind)
+{
+	struct i2c_client *client;
+	struct s2250 *dec;
+	u8 *data;
+	struct go7007 *go = i2c_get_adapdata(adapter);
+	struct go7007_usb *usb = go->hpi_context;
+
+	client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+	if (client == NULL)
+		return -ENOMEM;
+	memcpy(client, &s2250_client_templ,
+	       sizeof(s2250_client_templ));
+	client->adapter = adapter;
+
+	dec = kmalloc(sizeof(struct s2250), GFP_KERNEL);
+	if (dec == NULL) {
+		kfree(client);
+		return -ENOMEM;
+	}
+
+	dec->std = V4L2_STD_NTSC;
+	dec->brightness = 50;
+	dec->contrast = 50;
+	dec->saturation = 50;
+	dec->hue = 0;
+	client->addr = TLV320_ADDRESS;
+	i2c_set_clientdata(client, dec);
+
+	printk(KERN_DEBUG
+	       "s2250: initializing video decoder on %s\n",
+	       adapter->name);
+
+	/* initialize the audio */
+	client->addr = TLV320_ADDRESS;
+	if (write_regs(client, aud_regs) < 0) {
+		printk(KERN_ERR
+		       "s2250: error initializing audio\n");
+		kfree(client);
+		kfree(dec);
+		return 0;
+	}
+	client->addr = S2250_VIDDEC;
+	i2c_set_clientdata(client, dec);
+
+	if (write_regs(client, vid_regs) < 0) {
+		printk(KERN_ERR
+		       "s2250: error initializing decoder\n");
+		kfree(client);
+		kfree(dec);
+		return 0;
+	}
+	if (write_regs_fp(client, vid_regs_fp) < 0) {
+		printk(KERN_ERR
+		       "s2250: error initializing decoder\n");
+		kfree(client);
+		kfree(dec);
+		return 0;
+	}
+	/* set default channel */
+	/* composite */
+	write_reg_fp(client, 0x20, 0x020 | 1);
+	write_reg_fp(client, 0x21, 0x662);
+	write_reg_fp(client, 0x140, 0x060);
+
+	/* set default audio input */
+	dec->audio_input = 0;
+	write_reg(client, 0x08, 0x02); /* Line In */
+
+	if (down_interruptible(&usb->i2c_lock) == 0) {
+		data = kzalloc(16, GFP_KERNEL);
+		if (data != NULL) {
+			int rc;
+			rc = go7007_usb_vendor_request(go, 0x41, 0, 0,
+						       data, 16, 1);
+			if (rc > 0) {
+				u8 mask;
+				data[0] = 0;
+				mask = 1<<5;
+				data[0] &= ~mask;
+				data[1] |= mask;
+				go7007_usb_vendor_request(go, 0x40, 0,
+							  (data[1]<<8)
+							  + data[1],
+							  data, 16, 0);
+			}
+			kfree(data);
+		}
+		up(&usb->i2c_lock);
+	}
+
+	i2c_attach_client(client);
+	printk("s2250: initialized successfully\n");
+	return 0;
+}
+
+static int s2250_detach(struct i2c_client *client)
+{
+	struct s2250 *dec = i2c_get_clientdata(client);
+	int r;
+
+	r = i2c_detach_client(client);
+	if (r < 0)
+		return r;
+
+	kfree(client);
+	kfree(dec);
+	return 0;
+}
+
+static struct i2c_driver s2250_driver = {
+	.driver = {
+		.name	= "Sensoray 2250 board driver",
+	},
+	.id		= I2C_DRIVERID_S2250,
+	.detach_client	= s2250_detach,
+	.command	= s2250_command,
+};
+
+static int __init s2250_init(void)
+{
+	int r;
+
+	r = s2250loader_init();
+	if (r < 0)
+		return r;
+
+	r = i2c_add_driver(&s2250_driver);
+	if (r < 0)
+		return r;
+	return wis_i2c_add_driver(s2250_driver.id, s2250_detect);
+}
+
+static void __exit s2250_cleanup(void)
+{
+	wis_i2c_del_driver(s2250_detect);
+	i2c_del_driver(&s2250_driver);
+
+	s2250loader_cleanup();
+}
+
+module_init(s2250_init);
+module_exit(s2250_cleanup);
+
+MODULE_AUTHOR("");
+MODULE_DESCRIPTION("Board driver for Sensoryray 2250");
+MODULE_LICENSE("GPL v2");

drivers/staging/go7007/s2250-loader.c

+/*
+ * Copyright (C) 2008 Sensoray Company Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <dvb-usb.h>
+
+#define S2250_LOADER_FIRMWARE	"s2250_loader.fw"
+#define S2250_FIRMWARE		"s2250.fw"
+
+typedef struct device_extension_s {
+    struct kref     kref;
+    int minor;
+    struct usb_device *usbdev;
+} device_extension_t, *pdevice_extension_t;
+
+#define USB_s2250loader_MAJOR 240
+#define USB_s2250loader_MINOR_BASE 0
+#define MAX_DEVICES 256
+
+static pdevice_extension_t s2250_dev_table[MAX_DEVICES];
+static DECLARE_MUTEX(s2250_dev_table_mutex);
+
+#define to_s2250loader_dev_common(d) container_of(d, device_extension_t, kref)
+static void s2250loader_delete(struct kref *kref)
+{
+	pdevice_extension_t s = to_s2250loader_dev_common(kref);
+	s2250_dev_table[s->minor] = NULL;
+	kfree(s);
+}
+
+static int s2250loader_probe(struct usb_interface *interface,
+				const struct usb_device_id *id)
+{
+	struct usb_device *usbdev;
+	int minor, ret;
+	pdevice_extension_t s = NULL;
+	const struct firmware *fw;
+
+	usbdev = usb_get_dev(interface_to_usbdev(interface));
+	if (!usbdev) {
+		printk(KERN_ERR "Enter s2250loader_probe failed\n");
+		return -1;
+	}
+	printk(KERN_INFO "Enter s2250loader_probe 2.6 kernel\n");
+	printk(KERN_INFO "vendor id 0x%x, device id 0x%x devnum:%d\n",
+	   usbdev->descriptor.idVendor, usbdev->descriptor.idProduct,
+	   usbdev->devnum);
+
+	if (usbdev->descriptor.bNumConfigurations != 1) {
+		printk(KERN_ERR "can't handle multiple config\n");
+		return -1;
+	}
+	down(&s2250_dev_table_mutex);
+
+	for (minor = 0; minor < MAX_DEVICES; minor++) {
+		if (s2250_dev_table[minor] == NULL)
+			break;
+	}
+
+	if (minor < 0 || minor >= MAX_DEVICES) {
+		printk(KERN_ERR "Invalid minor: %d\n", minor);
+		goto failed;
+	}
+
+	/* Allocate dev data structure */
+	s = kmalloc(sizeof(device_extension_t), GFP_KERNEL);
+	if (s == NULL) {
+		printk(KERN_ERR "Out of memory\n");
+		goto failed;
+	}
+	s2250_dev_table[minor] = s;
+
+	printk(KERN_INFO "s2250loader_probe: Device %d on Bus %d Minor %d\n",
+		usbdev->devnum, usbdev->bus->busnum, minor);
+
+	memset(s, 0, sizeof(device_extension_t));
+	s->usbdev = usbdev;
+	printk(KERN_INFO "loading 2250 loader\n");
+
+	kref_init(&(s->kref));
+
+	up(&s2250_dev_table_mutex);
+
+	if (request_firmware(&fw, S2250_LOADER_FIRMWARE, &usbdev->dev)) {
+		printk(KERN_ERR
+			"s2250: unable to load firmware from file \"%s\"\n",
+			S2250_LOADER_FIRMWARE);
+		goto failed2;
+	}
+	ret = usb_cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
+	release_firmware(fw);
+	if (0 != ret) {
+		printk(KERN_ERR "loader download failed\n");
+		goto failed2;
+	}
+
+	if (request_firmware(&fw, S2250_FIRMWARE, &usbdev->dev)) {
+		printk(KERN_ERR
+			"s2250: unable to load firmware from file \"%s\"\n",
+			S2250_FIRMWARE);
+		goto failed2;
+	}
+	ret = usb_cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
+	release_firmware(fw);
+	if (0 != ret) {
+		printk(KERN_ERR "firmware_s2250 download failed\n");
+		goto failed2;
+	}
+
+	usb_set_intfdata(interface, s);
+	return 0;
+
+failed:
+	up(&s2250_dev_table_mutex);
+failed2:
+	if (s)
+		kref_put(&(s->kref), s2250loader_delete);
+
+	printk(KERN_ERR "probe failed\n");
+	return -1;
+}
+
+static void s2250loader_disconnect(struct usb_interface *interface)
+{
+	pdevice_extension_t s = usb_get_intfdata(interface);
+	printk(KERN_INFO "s2250: disconnect\n");
+	lock_kernel();
+	s = usb_get_intfdata(interface);
+	usb_set_intfdata(interface, NULL);
+	kref_put(&(s->kref), s2250loader_delete);
+	unlock_kernel();
+}
+
+static struct usb_device_id s2250loader_ids[] = {
+	{USB_DEVICE(0x1943, 0xa250)},
+	{}                          /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, s2250loader_ids);
+
+static struct usb_driver s2250loader_driver = {
+	.name		= "s2250-loader",
+	.probe		= s2250loader_probe,
+	.disconnect	= s2250loader_disconnect,
+	.id_table	= s2250loader_ids,
+};
+
+int s2250loader_init(void)
+{
+	int r;
+	unsigned i = 0;
+
+	for (i = 0; i < MAX_DEVICES; i++)
+		s2250_dev_table[i] = NULL;
+
+	r = usb_register(&s2250loader_driver);
+	if (r) {
+		printk(KERN_ERR "usb_register failed. Error number %d\n", r);
+		return -1;
+	}
+
+	printk(KERN_INFO "s2250loader_init: driver registered\n");
+	return 0;
+}
+EXPORT_SYMBOL(s2250loader_init);
+
+void s2250loader_cleanup(void)
+{
+	printk(KERN_INFO "s2250loader_cleanup\n");
+	usb_deregister(&s2250loader_driver);
+}
+EXPORT_SYMBOL(s2250loader_cleanup);

drivers/staging/go7007/wis-i2c.h

@@ -23,6 +23,7 @@
 #define	I2C_DRIVERID_WIS_SAA7113	0xf0f4
 #define	I2C_DRIVERID_WIS_OV7640		0xf0f5
 #define	I2C_DRIVERID_WIS_TW2804		0xf0f6
+#define	I2C_DRIVERID_S2250		0xf0f7
 #define	I2C_ALGO_GO7007			0xf00000
 #define	I2C_ALGO_GO7007_USB		0xf10000