Release 4.11 drivers/media/usb/pwc/pwc-ctrl.c

/* Driver for Philips webcam
   Functions that send various control messages to the webcam, including
   video modes.
   (C) 1999-2003 Nemosoft Unv.
   (C) 2004-2006 Luc Saillard (luc@saillard.org)
   (C) 2011 Hans de Goede <hdegoede@redhat.com>

   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
   driver and thus may have bugs that are not present in the original version.
   Please send bug reports and support requests to <luc@saillard.org>.

   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
   driver and thus may have bugs that are not present in the original version.
   Please send bug reports and support requests to <luc@saillard.org>.
   The decompression routines have been implemented by reverse-engineering the
   Nemosoft binary pwcx module. Caveat emptor.

   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
*/

/*
   Changes
   2001/08/03  Alvarado   Added methods for changing white balance and
                          red/green gains
 */

/* Control functions for the cam; brightness, contrast, video mode, etc. */

#ifdef __KERNEL__
#include <linux/uaccess.h>
#endif
#include <asm/errno.h>

#include "pwc.h"
#include "pwc-kiara.h"
#include "pwc-timon.h"
#include "pwc-dec1.h"
#include "pwc-dec23.h"

/* Selectors for status controls used only in this file */

#define GET_STATUS_B00				0x0B00

#define SENSOR_TYPE_FORMATTER1			0x0C00

#define GET_STATUS_3000				0x3000

#define READ_RAW_Y_MEAN_FORMATTER		0x3100

#define SET_POWER_SAVE_MODE_FORMATTER		0x3200

#define MIRROR_IMAGE_FORMATTER			0x3300

#define LED_FORMATTER				0x3400

#define LOWLIGHT				0x3500

#define GET_STATUS_3600				0x3600

#define SENSOR_TYPE_FORMATTER2			0x3700

#define GET_STATUS_3800				0x3800

#define GET_STATUS_4000				0x4000

#define GET_STATUS_4100				0x4100	
/* Get */

#define CTL_STATUS_4200				0x4200	
/* [GS] 1 */

/* Formatters for the Video Endpoint controls [GS]ET_EP_STREAM_CTL */

#define VIDEO_OUTPUT_CONTROL_FORMATTER		0x0100


static const char *size2name[PSZ_MAX] =
{
	"subQCIF",
	"QSIF",
	"QCIF",
	"SIF",
	"CIF",
	"VGA",
};

/********/

/* Entries for the Nala (645/646) camera; the Nala doesn't have compression
   preferences, so you either get compressed or non-compressed streams.

   An alternate value of 0 means this mode is not available at all.
 */


#define PWC_FPS_MAX_NALA 8


struct Nala_table_entry {
	
char alternate;			/* USB alternate setting */
	
int compressed;			/* Compressed yes/no */

	
unsigned char mode[3];		/* precomputed mode table */
};


static unsigned int Nala_fps_vector[PWC_FPS_MAX_NALA] = { 4, 5, 7, 10, 12, 15, 20, 24 };


static struct Nala_table_entry Nala_table[PSZ_MAX][PWC_FPS_MAX_NALA] =
{
#include "pwc-nala.h"
};

/****************************************************************************/



static int recv_control_msg(struct pwc_device *pdev,
	u8 request, u16 value, int recv_count)
{
	int rc;

	rc = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
		request,
		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
		value, pdev->vcinterface,
		pdev->ctrl_buf, recv_count, USB_CTRL_GET_TIMEOUT);
	if (rc < 0)
		PWC_ERROR("recv_control_msg error %d req %02x val %04x\n",
			  rc, request, value);
	return rc;
}

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Martin Fuzzey
49
59.04%
1
33.33%
Hans de Goede
26
31.33%
1
33.33%
Alan Cox
8
9.64%
1
33.33%
Total
83
100.00%
3
100.00%



static inline int send_video_command(struct pwc_device *pdev,
	int index, const unsigned char *buf, int buflen)
{
	int rc;

	memcpy(pdev->ctrl_buf, buf, buflen);

	rc = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
			SET_EP_STREAM_CTL,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			VIDEO_OUTPUT_CONTROL_FORMATTER, index,
			pdev->ctrl_buf, buflen, USB_CTRL_SET_TIMEOUT);
	if (rc >= 0)
		memcpy(pdev->cmd_buf, buf, buflen);
	else
		PWC_ERROR("send_video_command error %d\n", rc);

	return rc;
}

Contributors
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CommitProp
Hans de Goede
41
39.42%
2
50.00%
Martin Fuzzey
33
31.73%
1
25.00%
Alan Cox
30
28.85%
1
25.00%
Total
104
100.00%
4
100.00%



int send_control_msg(struct pwc_device *pdev,
	u8 request, u16 value, void *buf, int buflen)
{
	return usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
			request,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			value, pdev->vcinterface,
			buf, buflen, USB_CTRL_SET_TIMEOUT);
}

Contributors
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Martin Fuzzey
40
66.67%
1
50.00%
Hans de Goede
20
33.33%
1
50.00%
Total
60
100.00%
2
100.00%



static int set_video_mode_Nala(struct pwc_device *pdev, int size, int pixfmt,
			       int frames, int *compression, int send_to_cam)
{
	int fps, ret = 0;
	struct Nala_table_entry *pEntry;
	int frames2frames[31] =
	{ /* closest match of framerate */
	   0,  0,  0,  0,  4,  /*  0-4  */
	   5,  5,  7,  7, 10,  /*  5-9  */
	  10, 10, 12, 12, 15,  /* 10-14 */
	  15, 15, 15, 20, 20,  /* 15-19 */
	  20, 20, 20, 24, 24,  /* 20-24 */
	  24, 24, 24, 24, 24,  /* 25-29 */
	  24                   /* 30    */
	};
	int frames2table[31] =
	{ 0, 0, 0, 0, 0, /*  0-4  */
	  1, 1, 1, 2, 2, /*  5-9  */
	  3, 3, 4, 4, 4, /* 10-14 */
	  5, 5, 5, 5, 5, /* 15-19 */
	  6, 6, 6, 6, 7, /* 20-24 */
	  7, 7, 7, 7, 7, /* 25-29 */
	  7              /* 30    */
	};

	if (size < 0 || size > PSZ_CIF)
		return -EINVAL;
	if (frames < 4)
		frames = 4;
	else if (size > PSZ_QCIF && frames > 15)
		frames = 15;
	else if (frames > 25)
		frames = 25;
	frames = frames2frames[frames];
	fps = frames2table[frames];
	pEntry = &Nala_table[size][fps];
	if (pEntry->alternate == 0)
		return -EINVAL;

	if (send_to_cam)
		ret = send_video_command(pdev, pdev->vendpoint,
					 pEntry->mode, 3);
	if (ret < 0)
		return ret;

	if (pEntry->compressed && pixfmt == V4L2_PIX_FMT_YUV420)
		pwc_dec1_init(pdev, pEntry->mode);

	/* Set various parameters */
	pdev->pixfmt = pixfmt;
	pdev->vframes = frames;
	pdev->valternate = pEntry->alternate;
	pdev->width  = pwc_image_sizes[size][0];
	pdev->height = pwc_image_sizes[size][1];
	pdev->frame_size = (pdev->width * pdev->height * 3) / 2;
	if (pEntry->compressed) {
		if (pdev->release < 5) { /* 4 fold compression */
			pdev->vbandlength = 528;
			pdev->frame_size /= 4;
		}
		else {
			pdev->vbandlength = 704;
			pdev->frame_size /= 3;
		}
	}
	else
		pdev->vbandlength = 0;

	/* Let pwc-if.c:isoc_init know we don't support higher compression */
	*compression = 3;

	return 0;
}


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Alan Cox
362
79.56%
1
9.09%
Hans de Goede
88
19.34%
8
72.73%
Hans Verkuil
3
0.66%
1
9.09%
Luc Saillard
2
0.44%
1
9.09%
Total
455
100.00%
11
100.00%



static int set_video_mode_Timon(struct pwc_device *pdev, int size, int pixfmt,
				int frames, int *compression, int send_to_cam)
{
	const struct Timon_table_entry *pChoose;
	int fps, ret = 0;

	if (size >= PSZ_MAX || *compression < 0 || *compression > 3)
		return -EINVAL;
	if (frames < 5)
		frames = 5;
	else if (size == PSZ_VGA && frames > 15)
		frames = 15;
	else if (frames > 30)
		frames = 30;
	fps = (frames / 5) - 1;

	/* Find a supported framerate with progressively higher compression */
	pChoose = NULL;
	while (*compression <= 3) {
		pChoose = &Timon_table[size][fps][*compression];
		if (pChoose->alternate != 0)
			break;
		(*compression)++;
	}
	if (pChoose == NULL || pChoose->alternate == 0)
		return -ENOENT; /* Not supported. */

	if (send_to_cam)
		ret = send_video_command(pdev, pdev->vendpoint,
					 pChoose->mode, 13);
	if (ret < 0)
		return ret;

	if (pChoose->bandlength > 0 && pixfmt == V4L2_PIX_FMT_YUV420)
		pwc_dec23_init(pdev, pChoose->mode);

	/* Set various parameters */
	pdev->pixfmt = pixfmt;
	pdev->vframes = (fps + 1) * 5;
	pdev->valternate = pChoose->alternate;
	pdev->width  = pwc_image_sizes[size][0];
	pdev->height = pwc_image_sizes[size][1];
	pdev->vbandlength = pChoose->bandlength;
	if (pChoose->bandlength > 0)
		pdev->frame_size = (pChoose->bandlength * pdev->height) / 4;
	else
		pdev->frame_size = (pdev->width * pdev->height * 12) / 8;
	return 0;
}


Contributors
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CommitProp
Alan Cox
221
68.42%
1
11.11%
Hans de Goede
86
26.63%
6
66.67%
Luc Saillard
13
4.02%
1
11.11%
Hans Verkuil
3
0.93%
1
11.11%
Total
323
100.00%
9
100.00%



static int set_video_mode_Kiara(struct pwc_device *pdev, int size, int pixfmt,
				int frames, int *compression, int send_to_cam)
{
	const struct Kiara_table_entry *pChoose = NULL;
	int fps, ret = 0;

	if (size >= PSZ_MAX || *compression < 0 || *compression > 3)
		return -EINVAL;
	if (frames < 5)
		frames = 5;
	else if (size == PSZ_VGA && frames > 15)
		frames = 15;
	else if (frames > 30)
		frames = 30;
	fps = (frames / 5) - 1;

	/* Find a supported framerate with progressively higher compression */
	while (*compression <= 3) {
		pChoose = &Kiara_table[size][fps][*compression];
		if (pChoose->alternate != 0)
			break;
		(*compression)++;
	}
	if (pChoose == NULL || pChoose->alternate == 0)
		return -ENOENT; /* Not supported. */

	/* Firmware bug: video endpoint is 5, but commands are sent to endpoint 4 */
	if (send_to_cam)
		ret = send_video_command(pdev, 4, pChoose->mode, 12);
	if (ret < 0)
		return ret;

	if (pChoose->bandlength > 0 && pixfmt == V4L2_PIX_FMT_YUV420)
		pwc_dec23_init(pdev, pChoose->mode);

	/* All set and go */
	pdev->pixfmt = pixfmt;
	pdev->vframes = (fps + 1) * 5;
	pdev->valternate = pChoose->alternate;
	pdev->width  = pwc_image_sizes[size][0];
	pdev->height = pwc_image_sizes[size][1];
	pdev->vbandlength = pChoose->bandlength;
	if (pdev->vbandlength > 0)
		pdev->frame_size = (pdev->vbandlength * pdev->height) / 4;
	else
		pdev->frame_size = (pdev->width * pdev->height * 12) / 8;
	PWC_TRACE("frame_size=%d, vframes=%d, vsize=%d, vbandlength=%d\n",
	    pdev->frame_size, pdev->vframes, size, pdev->vbandlength);
	return 0;
}

Contributors
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CommitProp
Alan Cox
215
63.42%
1
8.33%
Hans de Goede
86
25.37%
7
58.33%
Luc Saillard
24
7.08%
1
8.33%
Adrian Bunk
10
2.95%
1
8.33%
Hans Verkuil
3
0.88%
1
8.33%
Greg Kroah-Hartman
1
0.29%
1
8.33%
Total
339
100.00%
12
100.00%



int pwc_set_video_mode(struct pwc_device *pdev, int width, int height,
	int pixfmt, int frames, int *compression, int send_to_cam)
{
	int ret, size;

	PWC_DEBUG_FLOW("set_video_mode(%dx%d @ %d, pixfmt %08x).\n",
		       width, height, frames, pixfmt);
	size = pwc_get_size(pdev, width, height);
	PWC_TRACE("decode_size = %d.\n", size);

	if (DEVICE_USE_CODEC1(pdev->type)) {
		ret = set_video_mode_Nala(pdev, size, pixfmt, frames,
					  compression, send_to_cam);
	} else if (DEVICE_USE_CODEC3(pdev->type)) {
		ret = set_video_mode_Kiara(pdev, size, pixfmt, frames,
					   compression, send_to_cam);
	} else {
		ret = set_video_mode_Timon(pdev, size, pixfmt, frames,
					   compression, send_to_cam);
	}
	if (ret < 0) {
		PWC_ERROR("Failed to set video mode %s@%d fps; return code = %d\n", size2name[size], frames, ret);
		return ret;
	}
	pdev->frame_total_size = pdev->frame_size + pdev->frame_header_size + pdev->frame_trailer_size;
	PWC_DEBUG_SIZE("Set resolution to %dx%d\n", pdev->width, pdev->height);
	return 0;
}

Contributors
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CommitProp
Alan Cox
145
72.86%
1
14.29%
Hans de Goede
27
13.57%
4
57.14%
Luc Saillard
25
12.56%
1
14.29%
Hans Verkuil
2
1.01%
1
14.29%
Total
199
100.00%
7
100.00%



static unsigned int pwc_get_fps_Nala(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
	unsigned int i;

	for (i = 0; i < PWC_FPS_MAX_NALA; i++) {
		if (Nala_table[size][i].alternate) {
			if (index--==0) return Nala_fps_vector[i];
		}
	}
	return 0;
}

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69
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1
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static unsigned int pwc_get_fps_Kiara(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
	unsigned int i;

	for (i = 0; i < PWC_FPS_MAX_KIARA; i++) {
		if (Kiara_table[size][i][3].alternate) {
			if (index--==0) return Kiara_fps_vector[i];
		}
	}
	return 0;
}

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72
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1
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72
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1
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static unsigned int pwc_get_fps_Timon(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
	unsigned int i;

	for (i=0; i < PWC_FPS_MAX_TIMON; i++) {
		if (Timon_table[size][i][3].alternate) {
			if (index--==0) return Timon_fps_vector[i];
		}
	}
	return 0;
}

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72
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unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
	unsigned int ret;

	if (DEVICE_USE_CODEC1(pdev->type)) {
		ret = pwc_get_fps_Nala(pdev, index, size);

	} else if (DEVICE_USE_CODEC3(pdev->type)) {
		ret = pwc_get_fps_Kiara(pdev, index, size);

	} else {
		ret = pwc_get_fps_Timon(pdev, index, size);
	}

	return ret;
}

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Luc Saillard
85
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85
100.00%
1
100.00%



int pwc_get_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data)
{
	int ret;

	ret = recv_control_msg(pdev, request, value, 1);
	if (ret < 0)
		return ret;

	*data = pdev->ctrl_buf[0];
	return 0;
}

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Alan Cox
29
50.00%
1
25.00%
Hans de Goede
26
44.83%
2
50.00%
Martin Fuzzey
3
5.17%
1
25.00%
Total
58
100.00%
4
100.00%



int pwc_set_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, u8 data)
{
	int ret;

	pdev->ctrl_buf[0] = data;
	ret = send_control_msg(pdev, request, value, pdev->ctrl_buf, 1);
	if (ret < 0)
		return ret;

	return 0;
}

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Hans de Goede
35
58.33%
3
60.00%
Alan Cox
21
35.00%
1
20.00%
Martin Fuzzey
4
6.67%
1
20.00%
Total
60
100.00%
5
100.00%



int pwc_get_s8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data)
{
	int ret;

	ret = recv_control_msg(pdev, request, value, 1);
	if (ret < 0)
		return ret;

	*data = ((s8 *)pdev->ctrl_buf)[0];
	return 0;
}

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Hans de Goede
38
59.38%
2
66.67%
Alan Cox
26
40.62%
1
33.33%
Total
64
100.00%
3
100.00%



int pwc_get_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data)
{
	int ret;

	ret = recv_control_msg(pdev, request, value, 2);
	if (ret < 0)
		return ret;

	*data = (pdev->ctrl_buf[1] << 8) | pdev->ctrl_buf[0];
	return 0;
}

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Hans de Goede
39
56.52%
2
50.00%
Alan Cox
27
39.13%
1
25.00%
Martin Fuzzey
3
4.35%
1
25.00%
Total
69
100.00%
4
100.00%



int pwc_set_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, u16 data)
{
	int ret;

	pdev->ctrl_buf[0] = data & 0xff;
	pdev->ctrl_buf[1] = data >> 8;
	ret = send_control_msg(pdev, request, value, pdev->ctrl_buf, 2);
	if (ret < 0)
		return ret;

	return 0;
}

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Alan Cox
36
49.32%
1
25.00%
Hans de Goede
33
45.21%
2
50.00%
Martin Fuzzey
4
5.48%
1
25.00%
Total
73
100.00%
4
100.00%



int pwc_button_ctrl(struct pwc_device *pdev, u16 value)
{
	int ret;

	ret = send_control_msg(pdev, SET_STATUS_CTL, value, NULL, 0);
	if (ret < 0)
		return ret;

	return 0;
}

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Alan Cox
20
46.51%
1
33.33%
Hans de Goede
19
44.19%
1
33.33%
Martin Fuzzey
4
9.30%
1
33.33%
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43
100.00%
3
100.00%

/* POWER */


void pwc_camera_power(struct pwc_device *pdev, int power)
{
	int r;

	if (!pdev->power_save)
		return;

	if (pdev->type < 675 || (pdev->type < 730 && pdev->release < 6))
		return;	/* Not supported by Nala or Timon < release 6 */

	if (power)
		pdev->ctrl_buf[0] = 0x00; /* active */
	else
		pdev->ctrl_buf[0] = 0xFF; /* power save */
	r = send_control_msg(pdev, SET_STATUS_CTL,
		SET_POWER_SAVE_MODE_FORMATTER, pdev->ctrl_buf, 1);
	if (r < 0)
		PWC_ERROR("Failed to power %s camera (%d)\n",
			  power ? "on" : "off", r);
}

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Hans de Goede
74
67.89%
2
40.00%
Luc Saillard
16
14.68%
1
20.00%
Alan Cox
15
13.76%
1
20.00%
Martin Fuzzey
4
3.67%
1
20.00%
Total
109
100.00%
5
100.00%



int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value)
{
	int r;

	if (pdev->type < 730)
		return 0;
	on_value /= 100;
	off_value /= 100;
	if (on_value < 0)
		on_value = 0;
	if (on_value > 0xff)
		on_value = 0xff;
	if (off_value < 0)
		off_value = 0;
	if (off_value > 0xff)
		off_value = 0xff;

	pdev->ctrl_buf[0] = on_value;
	pdev->ctrl_buf[1] = off_value;

	r = send_control_msg(pdev,
		SET_STATUS_CTL, LED_FORMATTER, pdev->ctrl_buf, 2);
	if (r < 0)
		PWC_ERROR("Failed to set LED on/off time (%d)\n", r);

	return r;
}

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Hans de Goede
79
61.24%
2
50.00%
Alan Cox
46
35.66%
1
25.00%
Martin Fuzzey
4
3.10%
1
25.00%
Total
129
100.00%
4
100.00%

#ifdef CONFIG_USB_PWC_DEBUG


int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor)
{
	int ret = -1, request;

	if (pdev->type < 675)
		request = SENSOR_TYPE_FORMATTER1;
	else if (pdev->type < 730)
		return -1; /* The Vesta series doesn't have this call */
	else
		request = SENSOR_TYPE_FORMATTER2;

	ret = recv_control_msg(pdev, GET_STATUS_CTL, request, 1);
	if (ret < 0)
		return ret;
	if (pdev->type < 675)
		*sensor = pdev->ctrl_buf[0] | 0x100;
	else
		*sensor = pdev->ctrl_buf[0];
	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hans de Goede
75
68.81%
4
57.14%
Alan Cox
28
25.69%
1
14.29%
Martin Fuzzey
3
2.75%
1
14.29%
Luc Saillard
3
2.75%
1
14.29%
Total
109
100.00%
7
100.00%

#endif
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Alan Cox
1338
48.34%
1
4.35%
Hans de Goede
800
28.90%
13
56.52%
Luc Saillard
453
16.37%
2
8.70%
Martin Fuzzey
151
5.46%
1
4.35%
Hans Verkuil
11
0.40%
1
4.35%
Adrian Bunk
10
0.36%
1
4.35%
Mauro Carvalho Chehab
2
0.07%
1
4.35%
Linus Torvalds
1
0.04%
1
4.35%
Greg Kroah-Hartman
1
0.04%
1
4.35%
Arjan van de Ven
1
0.04%
1
4.35%
Total
2768
100.00%
23
100.00%
Directory: drivers/media/usb/pwc

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