drivers/media/dvb/ttpci/budget-patch.c - kernel/msm-4.19 - Gitiles

 /*
  * budget-patch.c: driver for Budget Patch,
  * hardware modification of DVB-S cards enabling full TS
  *
  * Written by Emard <emard@softhome.net>
  *
  * Original idea by Roberto Deza <rdeza@unav.es>
  *
  * Special thanks to Holger Waechtler, Michael Hunold, Marian Durkovic
  * and Metzlerbros
  *
  * 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.
  * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
  *
  *
  * the project's page is at http://www.linuxtv.org/dvb/
  */

 #include "av7110.h"
 #include "av7110_hw.h"
 #include "budget.h"
 #include "stv0299.h"
 #include "ves1x93.h"
 #include "tda8083.h"

 #include "bsru6.h"

 #define budget_patch budget

 static struct saa7146_extension budget_extension;

 MAKE_BUDGET_INFO(ttbp, "TT-Budget/Patch DVB-S 1.x PCI", BUDGET_PATCH);
 //MAKE_BUDGET_INFO(satel,"TT-Budget/Patch SATELCO PCI", BUDGET_TT_HW_DISEQC);

 static struct pci_device_id pci_tbl[] = {
 	MAKE_EXTENSION_PCI(ttbp,0x13c2, 0x0000),
 //        MAKE_EXTENSION_PCI(satel, 0x13c2, 0x1013),
 	{
 		.vendor    = 0,
 	}
 };

 /* those lines are for budget-patch to be tried
 ** on a true budget card and observe the
 ** behaviour of VSYNC generated by rps1.
 ** this code was shamelessly copy/pasted from budget.c
 */
 static void gpio_Set22K (struct budget *budget, int state)
 {
 	struct saa7146_dev *dev=budget->dev;
 	dprintk(2, "budget: %p\n", budget);
 	saa7146_setgpio(dev, 3, (state ? SAA7146_GPIO_OUTHI : SAA7146_GPIO_OUTLO));
 }

 /* Diseqc functions only for TT Budget card */
 /* taken from the Skyvision DVB driver by
    Ralph Metzler <rjkm@metzlerbros.de> */

 static void DiseqcSendBit (struct budget *budget, int data)
 {
 	struct saa7146_dev *dev=budget->dev;
 	dprintk(2, "budget: %p\n", budget);

 	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTHI);
 	udelay(data ? 500 : 1000);
 	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO);
 	udelay(data ? 1000 : 500);
 }

 static void DiseqcSendByte (struct budget *budget, int data)
 {
 	int i, par=1, d;

 	dprintk(2, "budget: %p\n", budget);

 	for (i=7; i>=0; i--) {
 		d = (data>>i)&1;
 		par ^= d;
 		DiseqcSendBit(budget, d);
 	}

 	DiseqcSendBit(budget, par);
 }

 static int SendDiSEqCMsg (struct budget *budget, int len, u8 *msg, unsigned long burst)
 {
 	struct saa7146_dev *dev=budget->dev;
 	int i;

 	dprintk(2, "budget: %p\n", budget);

 	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO);
 	mdelay(16);

 	for (i=0; i<len; i++)
 		DiseqcSendByte(budget, msg[i]);

 	mdelay(16);

 	if (burst!=-1) {
 		if (burst)
 			DiseqcSendByte(budget, 0xff);
 		else {
 			saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTHI);
 			udelay(12500);
 			saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO);
 		}
 		msleep(20);
 	}

 	return 0;
 }

 /* shamelessly copy/pasted from budget.c
 */
 static int budget_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
 {
 	struct budget* budget = (struct budget*) fe->dvb->priv;

 	switch (tone) {
 	case SEC_TONE_ON:
 		gpio_Set22K (budget, 1);
 		break;

 	case SEC_TONE_OFF:
 		gpio_Set22K (budget, 0);
 		break;

 	default:
 		return -EINVAL;
 	}

 	return 0;
 }

 static int budget_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd)
 {
 	struct budget* budget = (struct budget*) fe->dvb->priv;

 	SendDiSEqCMsg (budget, cmd->msg_len, cmd->msg, 0);

 	return 0;
 }

 static int budget_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd)
 {
 	struct budget* budget = (struct budget*) fe->dvb->priv;

 	SendDiSEqCMsg (budget, 0, NULL, minicmd);

 	return 0;
 }

 static int budget_av7110_send_fw_cmd(struct budget_patch *budget, u16* buf, int length)
 {
 	int i;

 	dprintk(2, "budget: %p\n", budget);

 	for (i = 2; i < length; i++)
 	{
 		  ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND + 2*i, 2, (u32) buf[i], 0,0);
 		  msleep(5);
 	}
 	if (length)
 		  ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND + 2, 2, (u32) buf[1], 0,0);
 	else
 		  ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND + 2, 2, 0, 0,0);
 	msleep(5);
 	ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND, 2, (u32) buf[0], 0,0);
 	msleep(5);
 	return 0;
 }

 static void av7110_set22k(struct budget_patch *budget, int state)
 {
 	u16 buf[2] = {( COMTYPE_AUDIODAC << 8) | (state ? ON22K : OFF22K), 0};

 	dprintk(2, "budget: %p\n", budget);
 	budget_av7110_send_fw_cmd(budget, buf, 2);
 }

 static int av7110_send_diseqc_msg(struct budget_patch *budget, int len, u8 *msg, int burst)
 {
 	int i;
 	u16 buf[18] = { ((COMTYPE_AUDIODAC << 8) | SendDiSEqC),
 		16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

 	dprintk(2, "budget: %p\n", budget);

 	if (len>10)
 		len=10;

 	buf[1] = len+2;
 	buf[2] = len;

 	if (burst != -1)
 		buf[3]=burst ? 0x01 : 0x00;
 	else
 		buf[3]=0xffff;

 	for (i=0; i<len; i++)
 		buf[i+4]=msg[i];

 	budget_av7110_send_fw_cmd(budget, buf, 18);
 	return 0;
 }

 static int budget_patch_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
 {
 	struct budget_patch* budget = (struct budget_patch*) fe->dvb->priv;

 	switch (tone) {
 	case SEC_TONE_ON:
 		av7110_set22k (budget, 1);
 		break;

 	case SEC_TONE_OFF:
 		av7110_set22k (budget, 0);
 		break;

 	default:
 		return -EINVAL;
 	}

 	return 0;
 }

 static int budget_patch_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd)
 {
 	struct budget_patch* budget = (struct budget_patch*) fe->dvb->priv;

 	av7110_send_diseqc_msg (budget, cmd->msg_len, cmd->msg, 0);

 	return 0;
 }

 static int budget_patch_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd)
 {
 	struct budget_patch* budget = (struct budget_patch*) fe->dvb->priv;

 	av7110_send_diseqc_msg (budget, 0, NULL, minicmd);

 	return 0;
 }

 static int alps_bsrv2_tuner_set_params(struct dvb_frontend* fe, struct dvb_frontend_parameters* params)
 {
 	struct budget_patch* budget = (struct budget_patch*) fe->dvb->priv;
 	u8 pwr = 0;
 	u8 buf[4];
 	struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
 	u32 div = (params->frequency + 479500) / 125;

 	if (params->frequency > 2000000) pwr = 3;
 	else if (params->frequency > 1800000) pwr = 2;
 	else if (params->frequency > 1600000) pwr = 1;
 	else if (params->frequency > 1200000) pwr = 0;
 	else if (params->frequency >= 1100000) pwr = 1;
 	else pwr = 2;

 	buf[0] = (div >> 8) & 0x7f;
 	buf[1] = div & 0xff;
 	buf[2] = ((div & 0x18000) >> 10) | 0x95;
 	buf[3] = (pwr << 6) | 0x30;

 	// NOTE: since we're using a prescaler of 2, we set the
 	// divisor frequency to 62.5kHz and divide by 125 above

 	if (fe->ops.i2c_gate_ctrl)
 		fe->ops.i2c_gate_ctrl(fe, 1);
 	if (i2c_transfer (&budget->i2c_adap, &msg, 1) != 1)
 		return -EIO;
 	return 0;
 }

 static struct ves1x93_config alps_bsrv2_config = {
 	.demod_address = 0x08,
 	.xin = 90100000UL,
 	.invert_pwm = 0,
 };

 static int grundig_29504_451_tuner_set_params(struct dvb_frontend* fe, struct dvb_frontend_parameters* params)
 {
 	struct budget_patch* budget = (struct budget_patch*) fe->dvb->priv;
 	u32 div;
 	u8 data[4];
 	struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };

 	div = params->frequency / 125;
 	data[0] = (div >> 8) & 0x7f;
 	data[1] = div & 0xff;
 	data[2] = 0x8e;
 	data[3] = 0x00;

 	if (fe->ops.i2c_gate_ctrl)
 		fe->ops.i2c_gate_ctrl(fe, 1);
 	if (i2c_transfer (&budget->i2c_adap, &msg, 1) != 1)
 		return -EIO;
 	return 0;
 }

 static struct tda8083_config grundig_29504_451_config = {
 	.demod_address = 0x68,
 };

 static void frontend_init(struct budget_patch* budget)
 {
 	switch(budget->dev->pci->subsystem_device) {
 	case 0x0000: // Hauppauge/TT WinTV DVB-S rev1.X
 	case 0x1013: // SATELCO Multimedia PCI

 		// try the ALPS BSRV2 first of all
 		budget->dvb_frontend = ves1x93_attach(&alps_bsrv2_config, &budget->i2c_adap);
 		if (budget->dvb_frontend) {
 			budget->dvb_frontend->ops.tuner_ops.set_params = alps_bsrv2_tuner_set_params;
 			budget->dvb_frontend->ops.diseqc_send_master_cmd = budget_patch_diseqc_send_master_cmd;
 			budget->dvb_frontend->ops.diseqc_send_burst = budget_patch_diseqc_send_burst;
 			budget->dvb_frontend->ops.set_tone = budget_patch_set_tone;
 			break;
 		}

 		// try the ALPS BSRU6 now
 		budget->dvb_frontend = stv0299_attach(&alps_bsru6_config, &budget->i2c_adap);
 		if (budget->dvb_frontend) {
 			budget->dvb_frontend->ops.tuner_ops.set_params = alps_bsru6_tuner_set_params;
 			budget->dvb_frontend->tuner_priv = &budget->i2c_adap;

 			budget->dvb_frontend->ops.diseqc_send_master_cmd = budget_diseqc_send_master_cmd;
 			budget->dvb_frontend->ops.diseqc_send_burst = budget_diseqc_send_burst;
 			budget->dvb_frontend->ops.set_tone = budget_set_tone;
 			break;
 		}

 		// Try the grundig 29504-451
 		budget->dvb_frontend = tda8083_attach(&grundig_29504_451_config, &budget->i2c_adap);
 		if (budget->dvb_frontend) {
 			budget->dvb_frontend->ops.tuner_ops.set_params = grundig_29504_451_tuner_set_params;
 			budget->dvb_frontend->ops.diseqc_send_master_cmd = budget_diseqc_send_master_cmd;
 			budget->dvb_frontend->ops.diseqc_send_burst = budget_diseqc_send_burst;
 			budget->dvb_frontend->ops.set_tone = budget_set_tone;
 			break;
 		}
 		break;
 	}

 	if (budget->dvb_frontend == NULL) {
 		printk("dvb-ttpci: A frontend driver was not found for device %04x/%04x subsystem %04x/%04x\n",
 		       budget->dev->pci->vendor,
 		       budget->dev->pci->device,
 		       budget->dev->pci->subsystem_vendor,
 		       budget->dev->pci->subsystem_device);
 	} else {
 		if (dvb_register_frontend(&budget->dvb_adapter, budget->dvb_frontend)) {
 			printk("budget-av: Frontend registration failed!\n");
 			if (budget->dvb_frontend->ops.release)
 				budget->dvb_frontend->ops.release(budget->dvb_frontend);
 			budget->dvb_frontend = NULL;
 		}
 	}
 }

 /* written by Emard */
 static int budget_patch_attach (struct saa7146_dev* dev, struct saa7146_pci_extension_data *info)
 {
 	struct budget_patch *budget;
 	int err;
 	int count = 0;
 	int detected = 0;

 #define PATCH_RESET 0
 #define RPS_IRQ 0
 #define HPS_SETUP 0
 #if PATCH_RESET
 	saa7146_write(dev, MC1, MASK_31);
 	msleep(40);
 #endif
 #if HPS_SETUP
 	// initialize registers. Better to have it like this
 	// than leaving something unconfigured
 	saa7146_write(dev, DD1_STREAM_B, 0);
 	// port B VSYNC at rising edge
 	saa7146_write(dev, DD1_INIT, 0x00000200);  // have this in budget-core too!
 	saa7146_write(dev, BRS_CTRL, 0x00000000);  // VBI

 	// debi config
 	// saa7146_write(dev, DEBI_CONFIG, MASK_30|MASK_28|MASK_18);

 	// zero all HPS registers
 	saa7146_write(dev, HPS_H_PRESCALE, 0);                  // r68
 	saa7146_write(dev, HPS_H_SCALE, 0);                     // r6c
 	saa7146_write(dev, BCS_CTRL, 0);                        // r70
 	saa7146_write(dev, HPS_V_SCALE, 0);                     // r60
 	saa7146_write(dev, HPS_V_GAIN, 0);                      // r64
 	saa7146_write(dev, CHROMA_KEY_RANGE, 0);                // r74
 	saa7146_write(dev, CLIP_FORMAT_CTRL, 0);                // r78
 	// Set HPS prescaler for port B input
 	saa7146_write(dev, HPS_CTRL, (1<<30) | (0<<29) | (1<<28) | (0<<12) );
 	saa7146_write(dev, MC2,
 	  0 * (MASK_08 | MASK_24)  |   // BRS control
 	  0 * (MASK_09 | MASK_25)  |   // a
 	  0 * (MASK_10 | MASK_26)  |   // b
 	  1 * (MASK_06 | MASK_22)  |   // HPS_CTRL1
 	  1 * (MASK_05 | MASK_21)  |   // HPS_CTRL2
 	  0 * (MASK_01 | MASK_15)      // DEBI
 	   );
 #endif
 	// Disable RPS1 and RPS0
 	saa7146_write(dev, MC1, ( MASK_29 | MASK_28));
 	// RPS1 timeout disable
 	saa7146_write(dev, RPS_TOV1, 0);

 	// code for autodetection
 	// will wait for VBI_B event (vertical blank at port B)
 	// and will reset GPIO3 after VBI_B is detected.
 	// (GPIO3 should be raised high by CPU to
 	// test if GPIO3 will generate vertical blank signal
 	// in budget patch GPIO3 is connected to VSYNC_B
 	count = 0;
 #if 0
 	WRITE_RPS1(cpu_to_le32(CMD_UPLOAD |
 	  MASK_10 | MASK_09 | MASK_08 | MASK_06 | MASK_05 | MASK_04 | MASK_03 | MASK_02 ));
 #endif
 	WRITE_RPS1(cpu_to_le32(CMD_PAUSE | EVT_VBI_B));
 	WRITE_RPS1(cpu_to_le32(CMD_WR_REG_MASK | (GPIO_CTRL>>2)));
 	WRITE_RPS1(cpu_to_le32(GPIO3_MSK));
 	WRITE_RPS1(cpu_to_le32(SAA7146_GPIO_OUTLO<<24));
 #if RPS_IRQ
 	// issue RPS1 interrupt to increment counter
 	WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
 	// at least a NOP is neede between two interrupts
 	WRITE_RPS1(cpu_to_le32(CMD_NOP));
 	// interrupt again
 	WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
 #endif
 	WRITE_RPS1(cpu_to_le32(CMD_STOP));

 #if RPS_IRQ
 	// set event counter 1 source as RPS1 interrupt (0x03)          (rE4 p53)
 	// use 0x03 to track RPS1 interrupts - increase by 1 every gpio3 is toggled
 	// use 0x15 to track VPE  interrupts - increase by 1 every vpeirq() is called
 	saa7146_write(dev, EC1SSR, (0x03<<2) | 3 );
 	// set event counter 1 treshold to maximum allowed value        (rEC p55)
 	saa7146_write(dev, ECT1R,  0x3fff );
 #endif
 	// Fix VSYNC level
 	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO);
 	// Set RPS1 Address register to point to RPS code               (r108 p42)
 	saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle);
 	// Enable RPS1,                                                 (rFC p33)
 	saa7146_write(dev, MC1, (MASK_13 | MASK_29 ));


 	mdelay(50);
 	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTHI);
 	mdelay(150);


 	if( (saa7146_read(dev, GPIO_CTRL) & 0x10000000) == 0)
 		detected = 1;

 #if RPS_IRQ
 	printk("Event Counter 1 0x%04x\n", saa7146_read(dev, EC1R) & 0x3fff );
 #endif
 	// Disable RPS1
 	saa7146_write(dev, MC1, ( MASK_29 ));

 	if(detected == 0)
 		printk("budget-patch not detected or saa7146 in non-default state.\n"
 		       "try enabling ressetting of 7146 with MASK_31 in MC1 register\n");

 	else
 		printk("BUDGET-PATCH DETECTED.\n");


 /*      OLD (Original design by Roberto Deza):
 **      This code will setup the SAA7146_RPS1 to generate a square
 **      wave on GPIO3, changing when a field (TS_HEIGHT/2 "lines" of
 **      TS_WIDTH packets) has been acquired on SAA7146_D1B video port;
 **      then, this GPIO3 output which is connected to the D1B_VSYNC
 **      input, will trigger the acquisition of the alternate field
 **      and so on.
 **      Currently, the TT_budget / WinTV_Nova cards have two ICs
 **      (74HCT4040, LVC74) for the generation of this VSYNC signal,
 **      which seems that can be done perfectly without this :-)).
 */

 /*      New design (By Emard)
 **      this rps1 code will copy internal HS event to GPIO3 pin.
 **      GPIO3 is in budget-patch hardware connectd to port B VSYNC

 **      HS is an internal event of 7146, accessible with RPS
 **      and temporarily raised high every n lines
 **      (n in defined in the RPS_THRESH1 counter threshold)
 **      I think HS is raised high on the beginning of the n-th line
 **      and remains high until this n-th line that triggered
 **      it is completely received. When the receiption of n-th line
 **      ends, HS is lowered.

 **      To transmit data over DMA, 7146 needs changing state at
 **      port B VSYNC pin. Any changing of port B VSYNC will
 **      cause some DMA data transfer, with more or less packets loss.
 **      It depends on the phase and frequency of VSYNC and
 **      the way of 7146 is instructed to trigger on port B (defined
 **      in DD1_INIT register, 3rd nibble from the right valid
 **      numbers are 0-7, see datasheet)
 **
 **      The correct triggering can minimize packet loss,
 **      dvbtraffic should give this stable bandwidths:
 **        22k transponder = 33814 kbit/s
 **      27.5k transponder = 38045 kbit/s
 **      by experiment it is found that the best results
 **      (stable bandwidths and almost no packet loss)
 **      are obtained using DD1_INIT triggering number 2
 **      (Va at rising edge of VS Fa = HS x VS-failing forced toggle)
 **      and a VSYNC phase that occurs in the middle of DMA transfer
 **      (about byte 188*512=96256 in the DMA window).
 **
 **      Phase of HS is still not clear to me how to control,
 **      It just happens to be so. It can be seen if one enables
 **      RPS_IRQ and print Event Counter 1 in vpeirq(). Every
 **      time RPS_INTERRUPT is called, the Event Counter 1 will
 **      increment. That's how the 7146 is programmed to do event
 **      counting in this budget-patch.c
 **      I *think* HPS setting has something to do with the phase
 **      of HS but I cant be 100% sure in that.

 **      hardware debug note: a working budget card (including budget patch)
 **      with vpeirq() interrupt setup in mode "0x90" (every 64K) will
 **      generate 3 interrupts per 25-Hz DMA frame of 2*188*512 bytes
 **      and that means 3*25=75 Hz of interrupt freqency, as seen by
 **      watch cat /proc/interrupts
 **
 **      If this frequency is 3x lower (and data received in the DMA
 **      buffer don't start with 0x47, but in the middle of packets,
 **      whose lengths appear to be like 188 292 188 104 etc.
 **      this means VSYNC line is not connected in the hardware.
 **      (check soldering pcb and pins)
 **      The same behaviour of missing VSYNC can be duplicated on budget
 **      cards, by seting DD1_INIT trigger mode 7 in 3rd nibble.
 */

 	// Setup RPS1 "program" (p35)
 	count = 0;


 	// Wait Source Line Counter Threshold                           (p36)
 	WRITE_RPS1(cpu_to_le32(CMD_PAUSE | EVT_HS));
 	// Set GPIO3=1                                                  (p42)
 	WRITE_RPS1(cpu_to_le32(CMD_WR_REG_MASK | (GPIO_CTRL>>2)));
 	WRITE_RPS1(cpu_to_le32(GPIO3_MSK));
 	WRITE_RPS1(cpu_to_le32(SAA7146_GPIO_OUTHI<<24));
 #if RPS_IRQ
 	// issue RPS1 interrupt
 	WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
 #endif
 	// Wait reset Source Line Counter Threshold                     (p36)
 	WRITE_RPS1(cpu_to_le32(CMD_PAUSE | RPS_INV | EVT_HS));
 	// Set GPIO3=0                                                  (p42)
 	WRITE_RPS1(cpu_to_le32(CMD_WR_REG_MASK | (GPIO_CTRL>>2)));
 	WRITE_RPS1(cpu_to_le32(GPIO3_MSK));
 	WRITE_RPS1(cpu_to_le32(SAA7146_GPIO_OUTLO<<24));
 #if RPS_IRQ
 	// issue RPS1 interrupt
 	WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
 #endif
 	// Jump to begin of RPS program                                 (p37)
 	WRITE_RPS1(cpu_to_le32(CMD_JUMP));
 	WRITE_RPS1(cpu_to_le32(dev->d_rps1.dma_handle));

 	// Fix VSYNC level
 	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO);
 	// Set RPS1 Address register to point to RPS code               (r108 p42)
 	saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle);

 	if (!(budget = kmalloc (sizeof(struct budget_patch), GFP_KERNEL)))
 		return -ENOMEM;

 	dprintk(2, "budget: %p\n", budget);

 	if ((err = ttpci_budget_init (budget, dev, info, THIS_MODULE))) {
 		kfree (budget);
 		return err;
 	}

 	// Set Source Line Counter Threshold, using BRS                 (rCC p43)
 	// It generates HS event every TS_HEIGHT lines
 	// this is related to TS_WIDTH set in register
 	// NUM_LINE_BYTE3 in budget-core.c. If NUM_LINE_BYTE
 	// low 16 bits are set to TS_WIDTH bytes (TS_WIDTH=2*188
 	//,then RPS_THRESH1
 	// should be set to trigger every TS_HEIGHT (512) lines.
 	//
 	saa7146_write(dev, RPS_THRESH1, budget->buffer_height | MASK_12 );

 	// saa7146_write(dev, RPS_THRESH0, ((TS_HEIGHT/2)<<16) |MASK_28| (TS_HEIGHT/2) |MASK_12 );
 	// Enable RPS1                                                  (rFC p33)
 	saa7146_write(dev, MC1, (MASK_13 | MASK_29));


 	dev->ext_priv = budget;

 	budget->dvb_adapter.priv = budget;
 	frontend_init(budget);

 	ttpci_budget_init_hooks(budget);

 	return 0;
 }

 static int budget_patch_detach (struct saa7146_dev* dev)
 {
 	struct budget_patch *budget = (struct budget_patch*) dev->ext_priv;
 	int err;

 	if (budget->dvb_frontend) dvb_unregister_frontend(budget->dvb_frontend);

 	err = ttpci_budget_deinit (budget);

 	kfree (budget);

 	return err;
 }

 static int __init budget_patch_init(void)
 {
 	return saa7146_register_extension(&budget_extension);
 }

 static void __exit budget_patch_exit(void)
 {
 	saa7146_unregister_extension(&budget_extension);
 }

 static struct saa7146_extension budget_extension = {
 	.name           = "budget_patch dvb\0",
 	.flags          = 0,

 	.module         = THIS_MODULE,
 	.pci_tbl        = pci_tbl,
 	.attach         = budget_patch_attach,
 	.detach         = budget_patch_detach,

 	.irq_mask       = MASK_10,
 	.irq_func       = ttpci_budget_irq10_handler,
 };

 module_init(budget_patch_init);
 module_exit(budget_patch_exit);

 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Emard, Roberto Deza, Holger Waechtler, Michael Hunold, others");
 MODULE_DESCRIPTION("Driver for full TS modified DVB-S SAA7146+AV7110 "
 		   "based so-called Budget Patch cards");
	/*
	* budget-patch.c: driver for Budget Patch,
	* hardware modification of DVB-S cards enabling full TS
	*
	* Written by Emard <emard@softhome.net>
	*
	* Original idea by Roberto Deza <rdeza@unav.es>
	*
	* Special thanks to Holger Waechtler, Michael Hunold, Marian Durkovic
	* and Metzlerbros
	*
	* 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.
	* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
	*
	*
	* the project's page is at http://www.linuxtv.org/dvb/
	*/

	#include "av7110.h"
	#include "av7110_hw.h"
	#include "budget.h"
	#include "stv0299.h"
	#include "ves1x93.h"
	#include "tda8083.h"

	#include "bsru6.h"

	#define budget_patch budget

	static struct saa7146_extension budget_extension;

	MAKE_BUDGET_INFO(ttbp, "TT-Budget/Patch DVB-S 1.x PCI", BUDGET_PATCH);
	//MAKE_BUDGET_INFO(satel,"TT-Budget/Patch SATELCO PCI", BUDGET_TT_HW_DISEQC);

	static struct pci_device_id pci_tbl[] = {
	MAKE_EXTENSION_PCI(ttbp,0x13c2, 0x0000),
	// MAKE_EXTENSION_PCI(satel, 0x13c2, 0x1013),
	{
	.vendor = 0,
	}
	};

	/* those lines are for budget-patch to be tried
	** on a true budget card and observe the
	** behaviour of VSYNC generated by rps1.
	** this code was shamelessly copy/pasted from budget.c
	*/
	static void gpio_Set22K (struct budget *budget, int state)
	{
	struct saa7146_dev *dev=budget->dev;
	dprintk(2, "budget: %p\n", budget);
	saa7146_setgpio(dev, 3, (state ? SAA7146_GPIO_OUTHI : SAA7146_GPIO_OUTLO));
	}

	/* Diseqc functions only for TT Budget card */
	/* taken from the Skyvision DVB driver by
	Ralph Metzler <rjkm@metzlerbros.de> */

	static void DiseqcSendBit (struct budget *budget, int data)
	{
	struct saa7146_dev *dev=budget->dev;
	dprintk(2, "budget: %p\n", budget);

	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTHI);
	udelay(data ? 500 : 1000);
	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO);
	udelay(data ? 1000 : 500);
	}

	static void DiseqcSendByte (struct budget *budget, int data)
	{
	int i, par=1, d;

	dprintk(2, "budget: %p\n", budget);

	for (i=7; i>=0; i--) {
	d = (data>>i)&1;
	par ^= d;
	DiseqcSendBit(budget, d);
	}

	DiseqcSendBit(budget, par);
	}

	static int SendDiSEqCMsg (struct budget budget, int len, u8 msg, unsigned long burst)
	{
	struct saa7146_dev *dev=budget->dev;
	int i;

	dprintk(2, "budget: %p\n", budget);

	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO);
	mdelay(16);

	for (i=0; i<len; i++)
	DiseqcSendByte(budget, msg[i]);

	mdelay(16);

	if (burst!=-1) {
	if (burst)
	DiseqcSendByte(budget, 0xff);
	else {
	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTHI);
	udelay(12500);
	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO);
	}
	msleep(20);
	}

	return 0;
	}

	/* shamelessly copy/pasted from budget.c
	*/
	static int budget_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
	{
	struct budget* budget = (struct budget*) fe->dvb->priv;

	switch (tone) {
	case SEC_TONE_ON:
	gpio_Set22K (budget, 1);
	break;

	case SEC_TONE_OFF:
	gpio_Set22K (budget, 0);
	break;

	default:
	return -EINVAL;
	}

	return 0;
	}

	static int budget_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd)
	{
	struct budget* budget = (struct budget*) fe->dvb->priv;

	SendDiSEqCMsg (budget, cmd->msg_len, cmd->msg, 0);

	return 0;
	}

	static int budget_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd)
	{
	struct budget* budget = (struct budget*) fe->dvb->priv;

	SendDiSEqCMsg (budget, 0, NULL, minicmd);

	return 0;
	}

	static int budget_av7110_send_fw_cmd(struct budget_patch budget, u16 buf, int length)
	{
	int i;

	dprintk(2, "budget: %p\n", budget);

	for (i = 2; i < length; i++)
	{
	ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND + 2*i, 2, (u32) buf[i], 0,0);
	msleep(5);
	}
	if (length)
	ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND + 2, 2, (u32) buf[1], 0,0);
	else
	ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND + 2, 2, 0, 0,0);
	msleep(5);
	ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND, 2, (u32) buf[0], 0,0);
	msleep(5);
	return 0;
	}

	static void av7110_set22k(struct budget_patch *budget, int state)
	{
	u16 buf[2] = {( COMTYPE_AUDIODAC << 8) \| (state ? ON22K : OFF22K), 0};

	dprintk(2, "budget: %p\n", budget);
	budget_av7110_send_fw_cmd(budget, buf, 2);
	}

	static int av7110_send_diseqc_msg(struct budget_patch budget, int len, u8 msg, int burst)
	{
	int i;
	u16 buf[18] = { ((COMTYPE_AUDIODAC << 8) \| SendDiSEqC),
	16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

	dprintk(2, "budget: %p\n", budget);

	if (len>10)
	len=10;

	buf[1] = len+2;
	buf[2] = len;

	if (burst != -1)
	buf[3]=burst ? 0x01 : 0x00;
	else
	buf[3]=0xffff;

	for (i=0; i<len; i++)
	buf[i+4]=msg[i];

	budget_av7110_send_fw_cmd(budget, buf, 18);
	return 0;
	}

	static int budget_patch_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
	{
	struct budget_patch* budget = (struct budget_patch*) fe->dvb->priv;

	switch (tone) {
	case SEC_TONE_ON:
	av7110_set22k (budget, 1);
	break;

	case SEC_TONE_OFF:
	av7110_set22k (budget, 0);
	break;

	default:
	return -EINVAL;
	}

	return 0;
	}

	static int budget_patch_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd)
	{
	struct budget_patch* budget = (struct budget_patch*) fe->dvb->priv;

	av7110_send_diseqc_msg (budget, cmd->msg_len, cmd->msg, 0);

	return 0;
	}

	static int budget_patch_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd)
	{
	struct budget_patch* budget = (struct budget_patch*) fe->dvb->priv;

	av7110_send_diseqc_msg (budget, 0, NULL, minicmd);

	return 0;
	}

	static int alps_bsrv2_tuner_set_params(struct dvb_frontend* fe, struct dvb_frontend_parameters* params)
	{
	struct budget_patch* budget = (struct budget_patch*) fe->dvb->priv;
	u8 pwr = 0;
	u8 buf[4];
	struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
	u32 div = (params->frequency + 479500) / 125;

	if (params->frequency > 2000000) pwr = 3;
	else if (params->frequency > 1800000) pwr = 2;
	else if (params->frequency > 1600000) pwr = 1;
	else if (params->frequency > 1200000) pwr = 0;
	else if (params->frequency >= 1100000) pwr = 1;
	else pwr = 2;

	buf[0] = (div >> 8) & 0x7f;
	buf[1] = div & 0xff;
	buf[2] = ((div & 0x18000) >> 10) \| 0x95;
	buf[3] = (pwr << 6) \| 0x30;

	// NOTE: since we're using a prescaler of 2, we set the
	// divisor frequency to 62.5kHz and divide by 125 above

	if (fe->ops.i2c_gate_ctrl)
	fe->ops.i2c_gate_ctrl(fe, 1);
	if (i2c_transfer (&budget->i2c_adap, &msg, 1) != 1)
	return -EIO;
	return 0;
	}

	static struct ves1x93_config alps_bsrv2_config = {
	.demod_address = 0x08,
	.xin = 90100000UL,
	.invert_pwm = 0,
	};

	static int grundig_29504_451_tuner_set_params(struct dvb_frontend* fe, struct dvb_frontend_parameters* params)
	{
	struct budget_patch* budget = (struct budget_patch*) fe->dvb->priv;
	u32 div;
	u8 data[4];
	struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };

	div = params->frequency / 125;
	data[0] = (div >> 8) & 0x7f;
	data[1] = div & 0xff;
	data[2] = 0x8e;
	data[3] = 0x00;

	if (fe->ops.i2c_gate_ctrl)
	fe->ops.i2c_gate_ctrl(fe, 1);
	if (i2c_transfer (&budget->i2c_adap, &msg, 1) != 1)
	return -EIO;
	return 0;
	}

	static struct tda8083_config grundig_29504_451_config = {
	.demod_address = 0x68,
	};

	static void frontend_init(struct budget_patch* budget)
	{
	switch(budget->dev->pci->subsystem_device) {
	case 0x0000: // Hauppauge/TT WinTV DVB-S rev1.X
	case 0x1013: // SATELCO Multimedia PCI

	// try the ALPS BSRV2 first of all
	budget->dvb_frontend = ves1x93_attach(&alps_bsrv2_config, &budget->i2c_adap);
	if (budget->dvb_frontend) {
	budget->dvb_frontend->ops.tuner_ops.set_params = alps_bsrv2_tuner_set_params;
	budget->dvb_frontend->ops.diseqc_send_master_cmd = budget_patch_diseqc_send_master_cmd;
	budget->dvb_frontend->ops.diseqc_send_burst = budget_patch_diseqc_send_burst;
	budget->dvb_frontend->ops.set_tone = budget_patch_set_tone;
	break;
	}

	// try the ALPS BSRU6 now
	budget->dvb_frontend = stv0299_attach(&alps_bsru6_config, &budget->i2c_adap);
	if (budget->dvb_frontend) {
	budget->dvb_frontend->ops.tuner_ops.set_params = alps_bsru6_tuner_set_params;
	budget->dvb_frontend->tuner_priv = &budget->i2c_adap;

	budget->dvb_frontend->ops.diseqc_send_master_cmd = budget_diseqc_send_master_cmd;
	budget->dvb_frontend->ops.diseqc_send_burst = budget_diseqc_send_burst;
	budget->dvb_frontend->ops.set_tone = budget_set_tone;
	break;
	}

	// Try the grundig 29504-451
	budget->dvb_frontend = tda8083_attach(&grundig_29504_451_config, &budget->i2c_adap);
	if (budget->dvb_frontend) {
	budget->dvb_frontend->ops.tuner_ops.set_params = grundig_29504_451_tuner_set_params;
	budget->dvb_frontend->ops.diseqc_send_master_cmd = budget_diseqc_send_master_cmd;
	budget->dvb_frontend->ops.diseqc_send_burst = budget_diseqc_send_burst;
	budget->dvb_frontend->ops.set_tone = budget_set_tone;
	break;
	}
	break;
	}

	if (budget->dvb_frontend == NULL) {
	printk("dvb-ttpci: A frontend driver was not found for device %04x/%04x subsystem %04x/%04x\n",
	budget->dev->pci->vendor,
	budget->dev->pci->device,
	budget->dev->pci->subsystem_vendor,
	budget->dev->pci->subsystem_device);
	} else {
	if (dvb_register_frontend(&budget->dvb_adapter, budget->dvb_frontend)) {
	printk("budget-av: Frontend registration failed!\n");
	if (budget->dvb_frontend->ops.release)
	budget->dvb_frontend->ops.release(budget->dvb_frontend);
	budget->dvb_frontend = NULL;
	}
	}
	}

	/* written by Emard */
	static int budget_patch_attach (struct saa7146_dev* dev, struct saa7146_pci_extension_data *info)
	{
	struct budget_patch *budget;
	int err;
	int count = 0;
	int detected = 0;

	#define PATCH_RESET 0
	#define RPS_IRQ 0
	#define HPS_SETUP 0
	#if PATCH_RESET
	saa7146_write(dev, MC1, MASK_31);
	msleep(40);
	#endif
	#if HPS_SETUP
	// initialize registers. Better to have it like this
	// than leaving something unconfigured
	saa7146_write(dev, DD1_STREAM_B, 0);
	// port B VSYNC at rising edge
	saa7146_write(dev, DD1_INIT, 0x00000200); // have this in budget-core too!
	saa7146_write(dev, BRS_CTRL, 0x00000000); // VBI

	// debi config
	// saa7146_write(dev, DEBI_CONFIG, MASK_30\|MASK_28\|MASK_18);

	// zero all HPS registers
	saa7146_write(dev, HPS_H_PRESCALE, 0); // r68
	saa7146_write(dev, HPS_H_SCALE, 0); // r6c
	saa7146_write(dev, BCS_CTRL, 0); // r70
	saa7146_write(dev, HPS_V_SCALE, 0); // r60
	saa7146_write(dev, HPS_V_GAIN, 0); // r64
	saa7146_write(dev, CHROMA_KEY_RANGE, 0); // r74
	saa7146_write(dev, CLIP_FORMAT_CTRL, 0); // r78
	// Set HPS prescaler for port B input
	saa7146_write(dev, HPS_CTRL, (1<<30) \| (0<<29) \| (1<<28) \| (0<<12) );
	saa7146_write(dev, MC2,
	0 * (MASK_08 \| MASK_24) \| // BRS control
	0 * (MASK_09 \| MASK_25) \| // a
	0 * (MASK_10 \| MASK_26) \| // b
	1 * (MASK_06 \| MASK_22) \| // HPS_CTRL1
	1 * (MASK_05 \| MASK_21) \| // HPS_CTRL2
	0 * (MASK_01 \| MASK_15) // DEBI
	);
	#endif
	// Disable RPS1 and RPS0
	saa7146_write(dev, MC1, ( MASK_29 \| MASK_28));
	// RPS1 timeout disable
	saa7146_write(dev, RPS_TOV1, 0);

	// code for autodetection
	// will wait for VBI_B event (vertical blank at port B)
	// and will reset GPIO3 after VBI_B is detected.
	// (GPIO3 should be raised high by CPU to
	// test if GPIO3 will generate vertical blank signal
	// in budget patch GPIO3 is connected to VSYNC_B
	count = 0;
	#if 0
	WRITE_RPS1(cpu_to_le32(CMD_UPLOAD \|
	MASK_10 \| MASK_09 \| MASK_08 \| MASK_06 \| MASK_05 \| MASK_04 \| MASK_03 \| MASK_02 ));
	#endif
	WRITE_RPS1(cpu_to_le32(CMD_PAUSE \| EVT_VBI_B));
	WRITE_RPS1(cpu_to_le32(CMD_WR_REG_MASK \| (GPIO_CTRL>>2)));
	WRITE_RPS1(cpu_to_le32(GPIO3_MSK));
	WRITE_RPS1(cpu_to_le32(SAA7146_GPIO_OUTLO<<24));
	#if RPS_IRQ
	// issue RPS1 interrupt to increment counter
	WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
	// at least a NOP is neede between two interrupts
	WRITE_RPS1(cpu_to_le32(CMD_NOP));
	// interrupt again
	WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
	#endif
	WRITE_RPS1(cpu_to_le32(CMD_STOP));

	#if RPS_IRQ
	// set event counter 1 source as RPS1 interrupt (0x03) (rE4 p53)
	// use 0x03 to track RPS1 interrupts - increase by 1 every gpio3 is toggled
	// use 0x15 to track VPE interrupts - increase by 1 every vpeirq() is called
	saa7146_write(dev, EC1SSR, (0x03<<2) \| 3 );
	// set event counter 1 treshold to maximum allowed value (rEC p55)
	saa7146_write(dev, ECT1R, 0x3fff );
	#endif
	// Fix VSYNC level
	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO);
	// Set RPS1 Address register to point to RPS code (r108 p42)
	saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle);
	// Enable RPS1, (rFC p33)
	saa7146_write(dev, MC1, (MASK_13 \| MASK_29 ));


	mdelay(50);
	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTHI);
	mdelay(150);


	if( (saa7146_read(dev, GPIO_CTRL) & 0x10000000) == 0)
	detected = 1;

	#if RPS_IRQ
	printk("Event Counter 1 0x%04x\n", saa7146_read(dev, EC1R) & 0x3fff );
	#endif
	// Disable RPS1
	saa7146_write(dev, MC1, ( MASK_29 ));

	if(detected == 0)
	printk("budget-patch not detected or saa7146 in non-default state.\n"
	"try enabling ressetting of 7146 with MASK_31 in MC1 register\n");

	else
	printk("BUDGET-PATCH DETECTED.\n");


	/* OLD (Original design by Roberto Deza):
	** This code will setup the SAA7146_RPS1 to generate a square
	** wave on GPIO3, changing when a field (TS_HEIGHT/2 "lines" of
	** TS_WIDTH packets) has been acquired on SAA7146_D1B video port;
	** then, this GPIO3 output which is connected to the D1B_VSYNC
	** input, will trigger the acquisition of the alternate field
	** and so on.
	** Currently, the TT_budget / WinTV_Nova cards have two ICs
	** (74HCT4040, LVC74) for the generation of this VSYNC signal,
	** which seems that can be done perfectly without this :-)).
	*/

	/* New design (By Emard)
	** this rps1 code will copy internal HS event to GPIO3 pin.
	** GPIO3 is in budget-patch hardware connectd to port B VSYNC

	** HS is an internal event of 7146, accessible with RPS
	** and temporarily raised high every n lines
	** (n in defined in the RPS_THRESH1 counter threshold)
	** I think HS is raised high on the beginning of the n-th line
	** and remains high until this n-th line that triggered
	** it is completely received. When the receiption of n-th line
	** ends, HS is lowered.

	** To transmit data over DMA, 7146 needs changing state at
	** port B VSYNC pin. Any changing of port B VSYNC will
	** cause some DMA data transfer, with more or less packets loss.
	** It depends on the phase and frequency of VSYNC and
	** the way of 7146 is instructed to trigger on port B (defined
	** in DD1_INIT register, 3rd nibble from the right valid
	** numbers are 0-7, see datasheet)
	**
	** The correct triggering can minimize packet loss,
	** dvbtraffic should give this stable bandwidths:
	** 22k transponder = 33814 kbit/s
	** 27.5k transponder = 38045 kbit/s
	** by experiment it is found that the best results
	** (stable bandwidths and almost no packet loss)
	** are obtained using DD1_INIT triggering number 2
	** (Va at rising edge of VS Fa = HS x VS-failing forced toggle)
	** and a VSYNC phase that occurs in the middle of DMA transfer
	** (about byte 188*512=96256 in the DMA window).
	**
	** Phase of HS is still not clear to me how to control,
	** It just happens to be so. It can be seen if one enables
	** RPS_IRQ and print Event Counter 1 in vpeirq(). Every
	** time RPS_INTERRUPT is called, the Event Counter 1 will
	** increment. That's how the 7146 is programmed to do event
	** counting in this budget-patch.c
	** I think HPS setting has something to do with the phase
	** of HS but I cant be 100% sure in that.

	** hardware debug note: a working budget card (including budget patch)
	** with vpeirq() interrupt setup in mode "0x90" (every 64K) will
	** generate 3 interrupts per 25-Hz DMA frame of 2188512 bytes
	** and that means 3*25=75 Hz of interrupt freqency, as seen by
	** watch cat /proc/interrupts
	**
	** If this frequency is 3x lower (and data received in the DMA
	** buffer don't start with 0x47, but in the middle of packets,
	** whose lengths appear to be like 188 292 188 104 etc.
	** this means VSYNC line is not connected in the hardware.
	** (check soldering pcb and pins)
	** The same behaviour of missing VSYNC can be duplicated on budget
	** cards, by seting DD1_INIT trigger mode 7 in 3rd nibble.
	*/

	// Setup RPS1 "program" (p35)
	count = 0;


	// Wait Source Line Counter Threshold (p36)
	WRITE_RPS1(cpu_to_le32(CMD_PAUSE \| EVT_HS));
	// Set GPIO3=1 (p42)
	WRITE_RPS1(cpu_to_le32(CMD_WR_REG_MASK \| (GPIO_CTRL>>2)));
	WRITE_RPS1(cpu_to_le32(GPIO3_MSK));
	WRITE_RPS1(cpu_to_le32(SAA7146_GPIO_OUTHI<<24));
	#if RPS_IRQ
	// issue RPS1 interrupt
	WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
	#endif
	// Wait reset Source Line Counter Threshold (p36)
	WRITE_RPS1(cpu_to_le32(CMD_PAUSE \| RPS_INV \| EVT_HS));
	// Set GPIO3=0 (p42)
	WRITE_RPS1(cpu_to_le32(CMD_WR_REG_MASK \| (GPIO_CTRL>>2)));
	WRITE_RPS1(cpu_to_le32(GPIO3_MSK));
	WRITE_RPS1(cpu_to_le32(SAA7146_GPIO_OUTLO<<24));
	#if RPS_IRQ
	// issue RPS1 interrupt
	WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
	#endif
	// Jump to begin of RPS program (p37)
	WRITE_RPS1(cpu_to_le32(CMD_JUMP));
	WRITE_RPS1(cpu_to_le32(dev->d_rps1.dma_handle));

	// Fix VSYNC level
	saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO);
	// Set RPS1 Address register to point to RPS code (r108 p42)
	saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle);

	if (!(budget = kmalloc (sizeof(struct budget_patch), GFP_KERNEL)))
	return -ENOMEM;

	dprintk(2, "budget: %p\n", budget);

	if ((err = ttpci_budget_init (budget, dev, info, THIS_MODULE))) {
	kfree (budget);
	return err;
	}

	// Set Source Line Counter Threshold, using BRS (rCC p43)
	// It generates HS event every TS_HEIGHT lines
	// this is related to TS_WIDTH set in register
	// NUM_LINE_BYTE3 in budget-core.c. If NUM_LINE_BYTE
	// low 16 bits are set to TS_WIDTH bytes (TS_WIDTH=2*188
	//,then RPS_THRESH1
	// should be set to trigger every TS_HEIGHT (512) lines.
	//
	saa7146_write(dev, RPS_THRESH1, budget->buffer_height \| MASK_12 );

	// saa7146_write(dev, RPS_THRESH0, ((TS_HEIGHT/2)<<16) \|MASK_28\| (TS_HEIGHT/2) \|MASK_12 );
	// Enable RPS1 (rFC p33)
	saa7146_write(dev, MC1, (MASK_13 \| MASK_29));


	dev->ext_priv = budget;

	budget->dvb_adapter.priv = budget;
	frontend_init(budget);

	ttpci_budget_init_hooks(budget);

	return 0;
	}

	static int budget_patch_detach (struct saa7146_dev* dev)
	{
	struct budget_patch budget = (struct budget_patch) dev->ext_priv;
	int err;

	if (budget->dvb_frontend) dvb_unregister_frontend(budget->dvb_frontend);

	err = ttpci_budget_deinit (budget);

	kfree (budget);

	return err;
	}

	static int __init budget_patch_init(void)
	{
	return saa7146_register_extension(&budget_extension);
	}

	static void __exit budget_patch_exit(void)
	{
	saa7146_unregister_extension(&budget_extension);
	}

	static struct saa7146_extension budget_extension = {
	.name = "budget_patch dvb\0",
	.flags = 0,

	.module = THIS_MODULE,
	.pci_tbl = pci_tbl,
	.attach = budget_patch_attach,
	.detach = budget_patch_detach,

	.irq_mask = MASK_10,
	.irq_func = ttpci_budget_irq10_handler,
	};

	module_init(budget_patch_init);
	module_exit(budget_patch_exit);

	MODULE_LICENSE("GPL");
	MODULE_AUTHOR("Emard, Roberto Deza, Holger Waechtler, Michael Hunold, others");
	MODULE_DESCRIPTION("Driver for full TS modified DVB-S SAA7146+AV7110 "
	"based so-called Budget Patch cards");