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	Fixed MTP to work with TWRP
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								drivers/media/usb/gspca/mars.c
									
										
									
									
									
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								drivers/media/usb/gspca/mars.c
									
										
									
									
									
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							|  | @ -0,0 +1,440 @@ | |||
| /*
 | ||||
|  *		Mars-Semi MR97311A library | ||||
|  *		Copyright (C) 2005 <bradlch@hotmail.com> | ||||
|  * | ||||
|  * 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 | ||||
|  * 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 "mars" | ||||
| 
 | ||||
| #include "gspca.h" | ||||
| #include "jpeg.h" | ||||
| 
 | ||||
| MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>"); | ||||
| MODULE_DESCRIPTION("GSPCA/Mars USB Camera Driver"); | ||||
| MODULE_LICENSE("GPL"); | ||||
| 
 | ||||
| #define QUALITY 50 | ||||
| 
 | ||||
| /* specific webcam descriptor */ | ||||
| struct sd { | ||||
| 	struct gspca_dev gspca_dev;	/* !! must be the first item */ | ||||
| 
 | ||||
| 	struct v4l2_ctrl *brightness; | ||||
| 	struct v4l2_ctrl *saturation; | ||||
| 	struct v4l2_ctrl *sharpness; | ||||
| 	struct v4l2_ctrl *gamma; | ||||
| 	struct { /* illuminator control cluster */ | ||||
| 		struct v4l2_ctrl *illum_top; | ||||
| 		struct v4l2_ctrl *illum_bottom; | ||||
| 	}; | ||||
| 	u8 jpeg_hdr[JPEG_HDR_SZ]; | ||||
| }; | ||||
| 
 | ||||
| /* V4L2 controls supported by the driver */ | ||||
| static void setbrightness(struct gspca_dev *gspca_dev, s32 val); | ||||
| static void setcolors(struct gspca_dev *gspca_dev, s32 val); | ||||
| static void setgamma(struct gspca_dev *gspca_dev, s32 val); | ||||
| static void setsharpness(struct gspca_dev *gspca_dev, s32 val); | ||||
| 
 | ||||
| static const struct v4l2_pix_format vga_mode[] = { | ||||
| 	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, | ||||
| 		.bytesperline = 320, | ||||
| 		.sizeimage = 320 * 240 * 3 / 8 + 590, | ||||
| 		.colorspace = V4L2_COLORSPACE_JPEG, | ||||
| 		.priv = 2}, | ||||
| 	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, | ||||
| 		.bytesperline = 640, | ||||
| 		.sizeimage = 640 * 480 * 3 / 8 + 590, | ||||
| 		.colorspace = V4L2_COLORSPACE_JPEG, | ||||
| 		.priv = 1}, | ||||
| }; | ||||
| 
 | ||||
| static const __u8 mi_data[0x20] = { | ||||
| /*	 01    02   03     04    05    06    07    08 */ | ||||
| 	0x48, 0x22, 0x01, 0x47, 0x10, 0x00, 0x00, 0x00, | ||||
| /*	 09    0a   0b     0c    0d    0e    0f    10 */ | ||||
| 	0x00, 0x01, 0x30, 0x01, 0x30, 0x01, 0x30, 0x01, | ||||
| /*	 11    12   13     14    15    16    17    18 */ | ||||
| 	0x30, 0x00, 0x04, 0x00, 0x06, 0x01, 0xe2, 0x02, | ||||
| /*	 19    1a   1b     1c    1d    1e    1f    20 */ | ||||
| 	0x82, 0x00, 0x20, 0x17, 0x80, 0x08, 0x0c, 0x00 | ||||
| }; | ||||
| 
 | ||||
| /* write <len> bytes from gspca_dev->usb_buf */ | ||||
| static void reg_w(struct gspca_dev *gspca_dev, | ||||
| 		 int len) | ||||
| { | ||||
| 	int alen, ret; | ||||
| 
 | ||||
| 	if (gspca_dev->usb_err < 0) | ||||
| 		return; | ||||
| 
 | ||||
| 	ret = usb_bulk_msg(gspca_dev->dev, | ||||
| 			usb_sndbulkpipe(gspca_dev->dev, 4), | ||||
| 			gspca_dev->usb_buf, | ||||
| 			len, | ||||
| 			&alen, | ||||
| 			500);	/* timeout in milliseconds */ | ||||
| 	if (ret < 0) { | ||||
| 		pr_err("reg write [%02x] error %d\n", | ||||
| 		       gspca_dev->usb_buf[0], ret); | ||||
| 		gspca_dev->usb_err = ret; | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| static void mi_w(struct gspca_dev *gspca_dev, | ||||
| 		 u8 addr, | ||||
| 		 u8 value) | ||||
| { | ||||
| 	gspca_dev->usb_buf[0] = 0x1f; | ||||
| 	gspca_dev->usb_buf[1] = 0;			/* control byte */ | ||||
| 	gspca_dev->usb_buf[2] = addr; | ||||
| 	gspca_dev->usb_buf[3] = value; | ||||
| 
 | ||||
| 	reg_w(gspca_dev, 4); | ||||
| } | ||||
| 
 | ||||
| static void setbrightness(struct gspca_dev *gspca_dev, s32 val) | ||||
| { | ||||
| 	gspca_dev->usb_buf[0] = 0x61; | ||||
| 	gspca_dev->usb_buf[1] = val; | ||||
| 	reg_w(gspca_dev, 2); | ||||
| } | ||||
| 
 | ||||
| static void setcolors(struct gspca_dev *gspca_dev, s32 val) | ||||
| { | ||||
| 	gspca_dev->usb_buf[0] = 0x5f; | ||||
| 	gspca_dev->usb_buf[1] = val << 3; | ||||
| 	gspca_dev->usb_buf[2] = ((val >> 2) & 0xf8) | 0x04; | ||||
| 	reg_w(gspca_dev, 3); | ||||
| } | ||||
| 
 | ||||
| static void setgamma(struct gspca_dev *gspca_dev, s32 val) | ||||
| { | ||||
| 	gspca_dev->usb_buf[0] = 0x06; | ||||
| 	gspca_dev->usb_buf[1] = val * 0x40; | ||||
| 	reg_w(gspca_dev, 2); | ||||
| } | ||||
| 
 | ||||
| static void setsharpness(struct gspca_dev *gspca_dev, s32 val) | ||||
| { | ||||
| 	gspca_dev->usb_buf[0] = 0x67; | ||||
| 	gspca_dev->usb_buf[1] = val * 4 + 3; | ||||
| 	reg_w(gspca_dev, 2); | ||||
| } | ||||
| 
 | ||||
| static void setilluminators(struct gspca_dev *gspca_dev, bool top, bool bottom) | ||||
| { | ||||
| 	/* both are off if not streaming */ | ||||
| 	gspca_dev->usb_buf[0] = 0x22; | ||||
| 	if (top) | ||||
| 		gspca_dev->usb_buf[1] = 0x76; | ||||
| 	else if (bottom) | ||||
| 		gspca_dev->usb_buf[1] = 0x7a; | ||||
| 	else | ||||
| 		gspca_dev->usb_buf[1] = 0x7e; | ||||
| 	reg_w(gspca_dev, 2); | ||||
| } | ||||
| 
 | ||||
| static int mars_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_ILLUMINATORS_1) { | ||||
| 		/* only one can be on at a time */ | ||||
| 		if (ctrl->is_new && ctrl->val) | ||||
| 			sd->illum_bottom->val = 0; | ||||
| 		if (sd->illum_bottom->is_new && sd->illum_bottom->val) | ||||
| 			sd->illum_top->val = 0; | ||||
| 	} | ||||
| 
 | ||||
| 	if (!gspca_dev->streaming) | ||||
| 		return 0; | ||||
| 
 | ||||
| 	switch (ctrl->id) { | ||||
| 	case V4L2_CID_BRIGHTNESS: | ||||
| 		setbrightness(gspca_dev, ctrl->val); | ||||
| 		break; | ||||
| 	case V4L2_CID_SATURATION: | ||||
| 		setcolors(gspca_dev, ctrl->val); | ||||
| 		break; | ||||
| 	case V4L2_CID_GAMMA: | ||||
| 		setgamma(gspca_dev, ctrl->val); | ||||
| 		break; | ||||
| 	case V4L2_CID_ILLUMINATORS_1: | ||||
| 		setilluminators(gspca_dev, sd->illum_top->val, | ||||
| 					   sd->illum_bottom->val); | ||||
| 		break; | ||||
| 	case V4L2_CID_SHARPNESS: | ||||
| 		setsharpness(gspca_dev, ctrl->val); | ||||
| 		break; | ||||
| 	default: | ||||
| 		return -EINVAL; | ||||
| 	} | ||||
| 	return gspca_dev->usb_err; | ||||
| } | ||||
| 
 | ||||
| static const struct v4l2_ctrl_ops mars_ctrl_ops = { | ||||
| 	.s_ctrl = mars_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, 6); | ||||
| 	sd->brightness = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops, | ||||
| 			V4L2_CID_BRIGHTNESS, 0, 30, 1, 15); | ||||
| 	sd->saturation = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops, | ||||
| 			V4L2_CID_SATURATION, 0, 255, 1, 200); | ||||
| 	sd->gamma = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops, | ||||
| 			V4L2_CID_GAMMA, 0, 3, 1, 1); | ||||
| 	sd->sharpness = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops, | ||||
| 			V4L2_CID_SHARPNESS, 0, 2, 1, 1); | ||||
| 	sd->illum_top = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops, | ||||
| 			V4L2_CID_ILLUMINATORS_1, 0, 1, 1, 0); | ||||
| 	sd->illum_top->flags |= V4L2_CTRL_FLAG_UPDATE; | ||||
| 	sd->illum_bottom = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops, | ||||
| 			V4L2_CID_ILLUMINATORS_2, 0, 1, 1, 0); | ||||
| 	sd->illum_bottom->flags |= V4L2_CTRL_FLAG_UPDATE; | ||||
| 	if (hdl->error) { | ||||
| 		pr_err("Could not initialize controls\n"); | ||||
| 		return hdl->error; | ||||
| 	} | ||||
| 	v4l2_ctrl_cluster(2, &sd->illum_top); | ||||
| 	return 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; | ||||
| 
 | ||||
| 	cam = &gspca_dev->cam; | ||||
| 	cam->cam_mode = vga_mode; | ||||
| 	cam->nmodes = ARRAY_SIZE(vga_mode); | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| /* this function is called at probe and resume time */ | ||||
| static int sd_init(struct gspca_dev *gspca_dev) | ||||
| { | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| static int sd_start(struct gspca_dev *gspca_dev) | ||||
| { | ||||
| 	struct sd *sd = (struct sd *) gspca_dev; | ||||
| 	u8 *data; | ||||
| 	int i; | ||||
| 
 | ||||
| 	/* create the JPEG header */ | ||||
| 	jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height, | ||||
| 			gspca_dev->pixfmt.width, | ||||
| 			0x21);		/* JPEG 422 */ | ||||
| 	jpeg_set_qual(sd->jpeg_hdr, QUALITY); | ||||
| 
 | ||||
| 	data = gspca_dev->usb_buf; | ||||
| 
 | ||||
| 	data[0] = 0x01;		/* address */ | ||||
| 	data[1] = 0x01; | ||||
| 	reg_w(gspca_dev, 2); | ||||
| 
 | ||||
| 	/*
 | ||||
| 	   Initialize the MR97113 chip register | ||||
| 	 */ | ||||
| 	data[0] = 0x00;		/* address */ | ||||
| 	data[1] = 0x0c | 0x01;	/* reg 0 */ | ||||
| 	data[2] = 0x01;		/* reg 1 */ | ||||
| 	data[3] = gspca_dev->pixfmt.width / 8;	/* h_size , reg 2 */ | ||||
| 	data[4] = gspca_dev->pixfmt.height / 8;	/* v_size , reg 3 */ | ||||
| 	data[5] = 0x30;		/* reg 4, MI, PAS5101 :
 | ||||
| 				 *	0x30 for 24mhz , 0x28 for 12mhz */ | ||||
| 	data[6] = 0x02;		/* reg 5, H start - was 0x04 */ | ||||
| 	data[7] = v4l2_ctrl_g_ctrl(sd->gamma) * 0x40;	/* reg 0x06: gamma */ | ||||
| 	data[8] = 0x01;		/* reg 7, V start - was 0x03 */ | ||||
| /*	if (h_size == 320 ) */ | ||||
| /*		data[9]= 0x56;	 * reg 8, 24MHz, 2:1 scale down */ | ||||
| /*	else */ | ||||
| 	data[9] = 0x52;		/* reg 8, 24MHz, no scale down */ | ||||
| /*jfm: from win trace*/ | ||||
| 	data[10] = 0x18; | ||||
| 
 | ||||
| 	reg_w(gspca_dev, 11); | ||||
| 
 | ||||
| 	data[0] = 0x23;		/* address */ | ||||
| 	data[1] = 0x09;		/* reg 35, append frame header */ | ||||
| 
 | ||||
| 	reg_w(gspca_dev, 2); | ||||
| 
 | ||||
| 	data[0] = 0x3c;		/* address */ | ||||
| /*	if (gspca_dev->width == 1280) */ | ||||
| /*		data[1] = 200;	 * reg 60, pc-cam frame size
 | ||||
| 				 *	(unit: 4KB) 800KB */ | ||||
| /*	else */ | ||||
| 	data[1] = 50;		/* 50 reg 60, pc-cam frame size
 | ||||
| 				 *	(unit: 4KB) 200KB */ | ||||
| 	reg_w(gspca_dev, 2); | ||||
| 
 | ||||
| 	/* auto dark-gain */ | ||||
| 	data[0] = 0x5e;		/* address */ | ||||
| 	data[1] = 0;		/* reg 94, Y Gain (auto) */ | ||||
| /*jfm: from win trace*/ | ||||
| 				/* reg 0x5f/0x60 (LE) = saturation */ | ||||
| 				/* h (60): xxxx x100
 | ||||
| 				 * l (5f): xxxx x000 */ | ||||
| 	data[2] = v4l2_ctrl_g_ctrl(sd->saturation) << 3; | ||||
| 	data[3] = ((v4l2_ctrl_g_ctrl(sd->saturation) >> 2) & 0xf8) | 0x04; | ||||
| 	data[4] = v4l2_ctrl_g_ctrl(sd->brightness); /* reg 0x61 = brightness */ | ||||
| 	data[5] = 0x00; | ||||
| 
 | ||||
| 	reg_w(gspca_dev, 6); | ||||
| 
 | ||||
| 	data[0] = 0x67; | ||||
| /*jfm: from win trace*/ | ||||
| 	data[1] = v4l2_ctrl_g_ctrl(sd->sharpness) * 4 + 3; | ||||
| 	data[2] = 0x14; | ||||
| 	reg_w(gspca_dev, 3); | ||||
| 
 | ||||
| 	data[0] = 0x69; | ||||
| 	data[1] = 0x2f; | ||||
| 	data[2] = 0x28; | ||||
| 	data[3] = 0x42; | ||||
| 	reg_w(gspca_dev, 4); | ||||
| 
 | ||||
| 	data[0] = 0x63; | ||||
| 	data[1] = 0x07; | ||||
| 	reg_w(gspca_dev, 2); | ||||
| /*jfm: win trace - many writes here to reg 0x64*/ | ||||
| 
 | ||||
| 	/* initialize the MI sensor */ | ||||
| 	for (i = 0; i < sizeof mi_data; i++) | ||||
| 		mi_w(gspca_dev, i + 1, mi_data[i]); | ||||
| 
 | ||||
| 	data[0] = 0x00; | ||||
| 	data[1] = 0x4d;		/* ISOC transferring enable... */ | ||||
| 	reg_w(gspca_dev, 2); | ||||
| 
 | ||||
| 	setilluminators(gspca_dev, v4l2_ctrl_g_ctrl(sd->illum_top), | ||||
| 				   v4l2_ctrl_g_ctrl(sd->illum_bottom)); | ||||
| 
 | ||||
| 	return gspca_dev->usb_err; | ||||
| } | ||||
| 
 | ||||
| static void sd_stopN(struct gspca_dev *gspca_dev) | ||||
| { | ||||
| 	struct sd *sd = (struct sd *) gspca_dev; | ||||
| 
 | ||||
| 	if (v4l2_ctrl_g_ctrl(sd->illum_top) || | ||||
| 	    v4l2_ctrl_g_ctrl(sd->illum_bottom)) { | ||||
| 		setilluminators(gspca_dev, false, false); | ||||
| 		msleep(20); | ||||
| 	} | ||||
| 
 | ||||
| 	gspca_dev->usb_buf[0] = 1; | ||||
| 	gspca_dev->usb_buf[1] = 0; | ||||
| 	reg_w(gspca_dev, 2); | ||||
| } | ||||
| 
 | ||||
| static void sd_pkt_scan(struct gspca_dev *gspca_dev, | ||||
| 			u8 *data,			/* isoc packet */ | ||||
| 			int len)			/* iso packet length */ | ||||
| { | ||||
| 	struct sd *sd = (struct sd *) gspca_dev; | ||||
| 	int p; | ||||
| 
 | ||||
| 	if (len < 6) { | ||||
| /*		gspca_dev->last_packet_type = DISCARD_PACKET; */ | ||||
| 		return; | ||||
| 	} | ||||
| 	for (p = 0; p < len - 6; p++) { | ||||
| 		if (data[0 + p] == 0xff | ||||
| 		    && data[1 + p] == 0xff | ||||
| 		    && data[2 + p] == 0x00 | ||||
| 		    && data[3 + p] == 0xff | ||||
| 		    && data[4 + p] == 0x96) { | ||||
| 			if (data[5 + p] == 0x64 | ||||
| 			    || data[5 + p] == 0x65 | ||||
| 			    || data[5 + p] == 0x66 | ||||
| 			    || data[5 + p] == 0x67) { | ||||
| 				PDEBUG(D_PACK, "sof offset: %d len: %d", | ||||
| 					p, len); | ||||
| 				gspca_frame_add(gspca_dev, LAST_PACKET, | ||||
| 						data, p); | ||||
| 
 | ||||
| 				/* put the JPEG header */ | ||||
| 				gspca_frame_add(gspca_dev, FIRST_PACKET, | ||||
| 					sd->jpeg_hdr, JPEG_HDR_SZ); | ||||
| 				data += p + 16; | ||||
| 				len -= p + 16; | ||||
| 				break; | ||||
| 			} | ||||
| 		} | ||||
| 	} | ||||
| 	gspca_frame_add(gspca_dev, INTER_PACKET, data, len); | ||||
| } | ||||
| 
 | ||||
| /* 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, | ||||
| 	.pkt_scan = sd_pkt_scan, | ||||
| }; | ||||
| 
 | ||||
| /* -- module initialisation -- */ | ||||
| static const struct usb_device_id device_table[] = { | ||||
| 	{USB_DEVICE(0x093a, 0x050f)}, | ||||
| 	{} | ||||
| }; | ||||
| 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); | ||||
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