Release 4.7 drivers/media/pci/cx18/cx18-dvb.c

/*
 *  cx18 functions for DVB support
 *
 *  Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
 *  Copyright (C) 2008  Andy Walls <awalls@md.metrocast.net>
 *
 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "cx18-version.h"
#include "cx18-dvb.h"
#include "cx18-io.h"
#include "cx18-queue.h"
#include "cx18-streams.h"
#include "cx18-cards.h"
#include "cx18-gpio.h"
#include "s5h1409.h"
#include "mxl5005s.h"
#include "s5h1411.h"
#include "tda18271.h"
#include "zl10353.h"

#include <linux/firmware.h>
#include "mt352.h"
#include "mt352_priv.h"
#include "tuner-xc2028.h"


DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);


#define FWFILE "dvb-cx18-mpc718-mt352.fw"


#define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000

#define CX18_CLOCK_ENABLE2		 0xc71024

#define CX18_DMUX_CLK_MASK		 0x0080

/*
 * CX18_CARD_HVR_1600_ESMT
 * CX18_CARD_HVR_1600_SAMSUNG
 */


static struct mxl5005s_config hauppauge_hvr1600_tuner = {
	.i2c_address     = 0xC6 >> 1,
	.if_freq         = IF_FREQ_5380000HZ,
	.xtal_freq       = CRYSTAL_FREQ_16000000HZ,
	.agc_mode        = MXL_SINGLE_AGC,
	.tracking_filter = MXL_TF_C_H,
	.rssi_enable     = MXL_RSSI_ENABLE,
	.cap_select      = MXL_CAP_SEL_ENABLE,
	.div_out         = MXL_DIV_OUT_4,
	.clock_out       = MXL_CLOCK_OUT_DISABLE,
	.output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
	.top		 = MXL5005S_TOP_25P2,
	.mod_mode        = MXL_DIGITAL_MODE,
	.if_mode         = MXL_ZERO_IF,
	.qam_gain        = 0x02,
	.AgcMasterByte   = 0x00,
};


static struct s5h1409_config hauppauge_hvr1600_config = {
	.demod_address = 0x32 >> 1,
	.output_mode   = S5H1409_SERIAL_OUTPUT,
	.gpio          = S5H1409_GPIO_ON,
	.qam_if        = 44000,
	.inversion     = S5H1409_INVERSION_OFF,
	.status_mode   = S5H1409_DEMODLOCKING,
	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
	.hvr1600_opt   = S5H1409_HVR1600_OPTIMIZE
};

/*
 * CX18_CARD_HVR_1600_S5H1411
 */

static struct s5h1411_config hcw_s5h1411_config = {
	.output_mode   = S5H1411_SERIAL_OUTPUT,
	.gpio          = S5H1411_GPIO_OFF,
	.vsb_if        = S5H1411_IF_44000,
	.qam_if        = S5H1411_IF_4000,
	.inversion     = S5H1411_INVERSION_ON,
	.status_mode   = S5H1411_DEMODLOCKING,
	.mpeg_timing   = S5H1411_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
};


static struct tda18271_std_map hauppauge_tda18271_std_map = {
	.atsc_6   = { .if_freq = 5380, .agc_mode = 3, .std = 3,
		      .if_lvl = 6, .rfagc_top = 0x37 },
	.qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 0,
		      .if_lvl = 6, .rfagc_top = 0x37 },
};


static struct tda18271_config hauppauge_tda18271_config = {
	.std_map = &hauppauge_tda18271_std_map,
	.gate    = TDA18271_GATE_DIGITAL,
	.output_opt = TDA18271_OUTPUT_LT_OFF,
};

/*
 * CX18_CARD_LEADTEK_DVR3100H
 */
/* Information/confirmation of proper config values provided by Terry Wu */

static struct zl10353_config leadtek_dvr3100h_demod = {
	.demod_address         = 0x1e >> 1, /* Datasheet suggested straps */
	.if2                   = 45600,     /* 4.560 MHz IF from the XC3028 */
	.parallel_ts           = 1,         /* Not a serial TS */
	.no_tuner              = 1,         /* XC3028 is not behind the gate */
	.disable_i2c_gate_ctrl = 1,         /* Disable the I2C gate */
};

/*
 * CX18_CARD_YUAN_MPC718
 */
/*
 * Due to
 *
 * 1. an absence of information on how to prgram the MT352
 * 2. the Linux mt352 module pushing MT352 initialzation off onto us here
 *
 * We have to use an init sequence that *you* must extract from the Windows
 * driver (yuanrap.sys) and which we load as a firmware.
 *
 * If someone can provide me with a Zarlink MT352 (Intel CE6352?) Design Manual
 * with chip programming details, then I can remove this annoyance.
 */


static int yuan_mpc718_mt352_reqfw(struct cx18_stream *stream,
				   const struct firmware **fw)
{
	struct cx18 *cx = stream->cx;
	const char *fn = FWFILE;
	int ret;

	ret = request_firmware(fw, fn, &cx->pci_dev->dev);
	if (ret)
		CX18_ERR("Unable to open firmware file %s\n", fn);
	else {
		size_t sz = (*fw)->size;
		if (sz < 2 || sz > 64 || (sz % 2) != 0) {
			CX18_ERR("Firmware %s has a bad size: %lu bytes\n",
				 fn, (unsigned long) sz);
			ret = -EILSEQ;
			release_firmware(*fw);
			*fw = NULL;
		}
	}

	if (ret) {
		CX18_ERR("The MPC718 board variant with the MT352 DVB-T"
			  "demodualtor will not work without it\n");
		CX18_ERR("Run 'linux/Documentation/dvb/get_dvb_firmware "
			  "mpc718' if you need the firmware\n");
	}
	return ret;
}

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static int yuan_mpc718_mt352_init(struct dvb_frontend *fe)
{
	struct cx18_dvb *dvb = container_of(fe->dvb,
					    struct cx18_dvb, dvb_adapter);
	struct cx18_stream *stream = dvb->stream;
	const struct firmware *fw = NULL;
	int ret;
	int i;
	u8 buf[3];

	ret = yuan_mpc718_mt352_reqfw(stream, &fw);
	if (ret)
		return ret;

	/* Loop through all the register-value pairs in the firmware file */
	for (i = 0; i < fw->size; i += 2) {
		buf[0] = fw->data[i];
		/* Intercept a few registers we want to set ourselves */
		switch (buf[0]) {
		case TRL_NOMINAL_RATE_0:
			/* Set our custom OFDM bandwidth in the case below */
			break;
		case TRL_NOMINAL_RATE_1:
			/* 6 MHz: 64/7 * 6/8 / 20.48 * 2^16 = 0x55b6.db6 */
			/* 7 MHz: 64/7 * 7/8 / 20.48 * 2^16 = 0x6400 */
			/* 8 MHz: 64/7 * 8/8 / 20.48 * 2^16 = 0x7249.249 */
			buf[1] = 0x72;
			buf[2] = 0x49;
			mt352_write(fe, buf, 3);
			break;
		case INPUT_FREQ_0:
			/* Set our custom IF in the case below */
			break;
		case INPUT_FREQ_1:
			/* 4.56 MHz IF: (20.48 - 4.56)/20.48 * 2^14 = 0x31c0 */
			buf[1] = 0x31;
			buf[2] = 0xc0;
			mt352_write(fe, buf, 3);
			break;
		default:
			/* Pass through the register-value pair from the fw */
			buf[1] = fw->data[i+1];
			mt352_write(fe, buf, 2);
			break;
		}
	}

	buf[0] = (u8) TUNER_GO;
	buf[1] = 0x01; /* Go */
	mt352_write(fe, buf, 2);
	release_firmware(fw);
	return 0;
}

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static struct mt352_config yuan_mpc718_mt352_demod = {
	.demod_address = 0x1e >> 1,
	.adc_clock     = 20480,     /* 20.480 MHz */
	.if2           =  4560,     /*  4.560 MHz */
	.no_tuner      = 1,         /* XC3028 is not behind the gate */
	.demod_init    = yuan_mpc718_mt352_init,
};


static struct zl10353_config yuan_mpc718_zl10353_demod = {
	.demod_address         = 0x1e >> 1, /* Datasheet suggested straps */
	.if2                   = 45600,     /* 4.560 MHz IF from the XC3028 */
	.parallel_ts           = 1,         /* Not a serial TS */
	.no_tuner              = 1,         /* XC3028 is not behind the gate */
	.disable_i2c_gate_ctrl = 1,         /* Disable the I2C gate */
};


static struct zl10353_config gotview_dvd3_zl10353_demod = {
	.demod_address         = 0x1e >> 1, /* Datasheet suggested straps */
	.if2                   = 45600,     /* 4.560 MHz IF from the XC3028 */
	.parallel_ts           = 1,         /* Not a serial TS */
	.no_tuner              = 1,         /* XC3028 is not behind the gate */
	.disable_i2c_gate_ctrl = 1,         /* Disable the I2C gate */
};

static int dvb_register(struct cx18_stream *stream);

/* Kernel DVB framework calls this when the feed needs to start.
 * The CX18 framework should enable the transport DMA handling
 * and queue processing.
 */


static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
{
	struct dvb_demux *demux = feed->demux;
	struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
	struct cx18 *cx;
	int ret;
	u32 v;

	if (!stream)
		return -EINVAL;

	cx = stream->cx;
	CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
			feed->pid, feed->index);

	mutex_lock(&cx->serialize_lock);
	ret = cx18_init_on_first_open(cx);
	mutex_unlock(&cx->serialize_lock);
	if (ret) {
		CX18_ERR("Failed to initialize firmware starting DVB feed\n");
		return ret;
	}
	ret = -EINVAL;

	switch (cx->card->type) {
	case CX18_CARD_HVR_1600_ESMT:
	case CX18_CARD_HVR_1600_SAMSUNG:
	case CX18_CARD_HVR_1600_S5H1411:
		v = cx18_read_reg(cx, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
		v |= 0x00400000; /* Serial Mode */
		v |= 0x00002000; /* Data Length - Byte */
		v |= 0x00010000; /* Error - Polarity */
		v |= 0x00020000; /* Error - Passthru */
		v |= 0x000c0000; /* Error - Ignore */
		cx18_write_reg(cx, v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
		break;

	case CX18_CARD_LEADTEK_DVR3100H:
	case CX18_CARD_YUAN_MPC718:
	case CX18_CARD_GOTVIEW_PCI_DVD3:
	default:
		/* Assumption - Parallel transport - Signalling
                 * undefined or default.
                 */
		break;
	}

	if (!demux->dmx.frontend)
		return -EINVAL;

	mutex_lock(&stream->dvb->feedlock);
	if (stream->dvb->feeding++ == 0) {
		CX18_DEBUG_INFO("Starting Transport DMA\n");
		mutex_lock(&cx->serialize_lock);
		set_bit(CX18_F_S_STREAMING, &stream->s_flags);
		ret = cx18_start_v4l2_encode_stream(stream);
		if (ret < 0) {
			CX18_DEBUG_INFO("Failed to start Transport DMA\n");
			stream->dvb->feeding--;
			if (stream->dvb->feeding == 0)
				clear_bit(CX18_F_S_STREAMING, &stream->s_flags);
		}
		mutex_unlock(&cx->serialize_lock);
	} else
		ret = 0;
	mutex_unlock(&stream->dvb->feedlock);

	return ret;
}

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/* Kernel DVB framework calls this when the feed needs to stop. */


static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
{
	struct dvb_demux *demux = feed->demux;
	struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
	struct cx18 *cx;
	int ret = -EINVAL;

	if (stream) {
		cx = stream->cx;
		CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
				feed->pid, feed->index);

		mutex_lock(&stream->dvb->feedlock);
		if (--stream->dvb->feeding == 0) {
			CX18_DEBUG_INFO("Stopping Transport DMA\n");
			mutex_lock(&cx->serialize_lock);
			ret = cx18_stop_v4l2_encode_stream(stream, 0);
			mutex_unlock(&cx->serialize_lock);
		} else
			ret = 0;
		mutex_unlock(&stream->dvb->feedlock);
	}

	return ret;
}

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int cx18_dvb_register(struct cx18_stream *stream)
{
	struct cx18 *cx = stream->cx;
	struct cx18_dvb *dvb = stream->dvb;
	struct dvb_adapter *dvb_adapter;
	struct dvb_demux *dvbdemux;
	struct dmx_demux *dmx;
	int ret;

	if (!dvb)
		return -EINVAL;

	dvb->enabled = 0;
	dvb->stream = stream;

	ret = dvb_register_adapter(&dvb->dvb_adapter,
			CX18_DRIVER_NAME,
			THIS_MODULE, &cx->pci_dev->dev, adapter_nr);
	if (ret < 0)
		goto err_out;

	dvb_adapter = &dvb->dvb_adapter;

	dvbdemux = &dvb->demux;

	dvbdemux->priv = (void *)stream;

	dvbdemux->filternum = 256;
	dvbdemux->feednum = 256;
	dvbdemux->start_feed = cx18_dvb_start_feed;
	dvbdemux->stop_feed = cx18_dvb_stop_feed;
	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
		DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
	ret = dvb_dmx_init(dvbdemux);
	if (ret < 0)
		goto err_dvb_unregister_adapter;

	dmx = &dvbdemux->dmx;

	dvb->hw_frontend.source = DMX_FRONTEND_0;
	dvb->mem_frontend.source = DMX_MEMORY_FE;
	dvb->dmxdev.filternum = 256;
	dvb->dmxdev.demux = dmx;

	ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
	if (ret < 0)
		goto err_dvb_dmx_release;

	ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
	if (ret < 0)
		goto err_dvb_dmxdev_release;

	ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
	if (ret < 0)
		goto err_remove_hw_frontend;

	ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
	if (ret < 0)
		goto err_remove_mem_frontend;

	ret = dvb_register(stream);
	if (ret < 0)
		goto err_disconnect_frontend;

	dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);

	CX18_INFO("DVB Frontend registered\n");
	CX18_INFO("Registered DVB adapter%d for %s (%d x %d.%02d kB)\n",
		  stream->dvb->dvb_adapter.num, stream->name,
		  stream->buffers, stream->buf_size/1024,
		  (stream->buf_size * 100 / 1024) % 100);

	mutex_init(&dvb->feedlock);
	dvb->enabled = 1;
	return ret;

err_disconnect_frontend:
	dmx->disconnect_frontend(dmx);
err_remove_mem_frontend:
	dmx->remove_frontend(dmx, &dvb->mem_frontend);
err_remove_hw_frontend:
	dmx->remove_frontend(dmx, &dvb->hw_frontend);
err_dvb_dmxdev_release:
	dvb_dmxdev_release(&dvb->dmxdev);
err_dvb_dmx_release:
	dvb_dmx_release(dvbdemux);
err_dvb_unregister_adapter:
	dvb_unregister_adapter(dvb_adapter);
err_out:
	return ret;
}

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void cx18_dvb_unregister(struct cx18_stream *stream)
{
	struct cx18 *cx = stream->cx;
	struct cx18_dvb *dvb = stream->dvb;
	struct dvb_adapter *dvb_adapter;
	struct dvb_demux *dvbdemux;
	struct dmx_demux *dmx;

	CX18_INFO("unregister DVB\n");

	if (dvb == NULL || !dvb->enabled)
		return;

	dvb_adapter = &dvb->dvb_adapter;
	dvbdemux = &dvb->demux;
	dmx = &dvbdemux->dmx;

	dmx->close(dmx);
	dvb_net_release(&dvb->dvbnet);
	dmx->remove_frontend(dmx, &dvb->mem_frontend);
	dmx->remove_frontend(dmx, &dvb->hw_frontend);
	dvb_dmxdev_release(&dvb->dmxdev);
	dvb_dmx_release(dvbdemux);
	dvb_unregister_frontend(dvb->fe);
	dvb_frontend_detach(dvb->fe);
	dvb_unregister_adapter(dvb_adapter);
}

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/* All the DVB attach calls go here, this function get's modified
 * for each new card. cx18_dvb_start_feed() will also need changes.
 */


static int dvb_register(struct cx18_stream *stream)
{
	struct cx18_dvb *dvb = stream->dvb;
	struct cx18 *cx = stream->cx;
	int ret = 0;

	switch (cx->card->type) {
	case CX18_CARD_HVR_1600_ESMT:
	case CX18_CARD_HVR_1600_SAMSUNG:
		dvb->fe = dvb_attach(s5h1409_attach,
			&hauppauge_hvr1600_config,
			&cx->i2c_adap[0]);
		if (dvb->fe != NULL) {
			dvb_attach(mxl5005s_attach, dvb->fe,
				&cx->i2c_adap[0],
				&hauppauge_hvr1600_tuner);
			ret = 0;
		}
		break;
	case CX18_CARD_HVR_1600_S5H1411:
		dvb->fe = dvb_attach(s5h1411_attach,
				     &hcw_s5h1411_config,
				     &cx->i2c_adap[0]);
		if (dvb->fe != NULL)
			dvb_attach(tda18271_attach, dvb->fe,
				   0x60, &cx->i2c_adap[0],
				   &hauppauge_tda18271_config);
		break;
	case CX18_CARD_LEADTEK_DVR3100H:
		dvb->fe = dvb_attach(zl10353_attach,
				     &leadtek_dvr3100h_demod,
				     &cx->i2c_adap[1]);
		if (dvb->fe != NULL) {
			struct dvb_frontend *fe;
			struct xc2028_config cfg = {
				.i2c_adap = &cx->i2c_adap[1],
				.i2c_addr = 0xc2 >> 1,
				.ctrl = NULL,
                        };
			static struct xc2028_ctrl ctrl = {
				.fname   = XC2028_DEFAULT_FIRMWARE,
				.max_len = 64,
				.demod   = XC3028_FE_ZARLINK456,
				.type    = XC2028_AUTO,
                        };

			fe = dvb_attach(xc2028_attach, dvb->fe, &cfg);
			if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
				fe->ops.tuner_ops.set_config(fe, &ctrl);
		}
		break;
	case CX18_CARD_YUAN_MPC718:
		/*
                 * TODO
                 * Apparently, these cards also could instead have a
                 * DiBcom demod supported by one of the db7000 drivers
                 */
		dvb->fe = dvb_attach(mt352_attach,
				     &yuan_mpc718_mt352_demod,
				     &cx->i2c_adap[1]);
		if (dvb->fe == NULL)
			dvb->fe = dvb_attach(zl10353_attach,
					     &yuan_mpc718_zl10353_demod,
					     &cx->i2c_adap[1]);
		if (dvb->fe != NULL) {
			struct dvb_frontend *fe;
			struct xc2028_config cfg = {
				.i2c_adap = &cx->i2c_adap[1],
				.i2c_addr = 0xc2 >> 1,
				.ctrl = NULL,
                        };
			static struct xc2028_ctrl ctrl = {
				.fname   = XC2028_DEFAULT_FIRMWARE,
				.max_len = 64,
				.demod   = XC3028_FE_ZARLINK456,
				.type    = XC2028_AUTO,
                        };

			fe = dvb_attach(xc2028_attach, dvb->fe, &cfg);
			if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
				fe->ops.tuner_ops.set_config(fe, &ctrl);
		}
		break;
	case CX18_CARD_GOTVIEW_PCI_DVD3:
			dvb->fe = dvb_attach(zl10353_attach,
					     &gotview_dvd3_zl10353_demod,
					     &cx->i2c_adap[1]);
		if (dvb->fe != NULL) {
			struct dvb_frontend *fe;
			struct xc2028_config cfg = {
				.i2c_adap = &cx->i2c_adap[1],
				.i2c_addr = 0xc2 >> 1,
				.ctrl = NULL,
                        };
			static struct xc2028_ctrl ctrl = {
				.fname   = XC2028_DEFAULT_FIRMWARE,
				.max_len = 64,
				.demod   = XC3028_FE_ZARLINK456,
				.type    = XC2028_AUTO,
                        };

			fe = dvb_attach(xc2028_attach, dvb->fe, &cfg);
			if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
				fe->ops.tuner_ops.set_config(fe, &ctrl);
		}
		break;
	default:
		/* No Digital Tv Support */
		break;
	}

	if (dvb->fe == NULL) {
		CX18_ERR("frontend initialization failed\n");
		return -1;
	}

	dvb->fe->callback = cx18_reset_tuner_gpio;

	ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
	if (ret < 0) {
		if (dvb->fe->ops.release)
			dvb->fe->ops.release(dvb->fe);
		return ret;
	}

	/*
         * The firmware seems to enable the TS DMUX clock
         * under various circumstances.  However, since we know we
         * might use it, let's just turn it on ourselves here.
         */
	cx18_write_reg_expect(cx,
			      (CX18_DMUX_CLK_MASK << 16) | CX18_DMUX_CLK_MASK,
			      CX18_CLOCK_ENABLE2,
			      CX18_DMUX_CLK_MASK,
			      (CX18_DMUX_CLK_MASK << 16) | CX18_DMUX_CLK_MASK);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
andy walls
andy walls
341
47.89%
2
33.33%
hans verkuil
hans verkuil
174
24.44%
1
16.67%
alexey chernov
alexey chernov
139
19.52%
1
16.67%
devin heitmueller
devin heitmueller
54
7.58%
1
16.67%
steven toth
steven toth
4
0.56%
1
16.67%
Total
712
100.00%
6
100.00%


MODULE_FIRMWARE(FWFILE);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
hans verkuil
hans verkuil
1123
41.67%
1
5.00%
andy walls
andy walls
1093
40.56%
12
60.00%
devin heitmueller
devin heitmueller
206
7.64%
3
15.00%
alexey chernov
alexey chernov
182
6.75%
1
5.00%
steven toth
steven toth
55
2.04%
1
5.00%
jiri slaby
jiri slaby
26
0.96%
1
5.00%
tim gardner
tim gardner
10
0.37%
1
5.00%
Total
2695
100.00%
20
100.00%
  
Directory: drivers/media/pci/cx18

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