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|
/*
* Driver for the NXP SAA7164 PCIe bridge
*
* Copyright (c) 2010 Steven Toth <stoth@kernellabs.com>
*
* 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 <linux/init.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include "saa7164.h"
/* The Bridge API needs to understand register widths (in bytes) for the
* attached I2C devices, so we can simplify the virtual i2c mechansms
* and keep the -i2c.c implementation clean.
*/
#define REGLEN_8bit 1
#define REGLEN_16bit 2
struct saa7164_board saa7164_boards[] = {
[SAA7164_BOARD_UNKNOWN] = {
/* Bridge will not load any firmware, without knowing
* the rev this would be fatal. */
.name = "Unknown",
},
[SAA7164_BOARD_UNKNOWN_REV2] = {
/* Bridge will load the v2 f/w and dump descriptors */
/* Required during new board bringup */
.name = "Generic Rev2",
.chiprev = SAA7164_CHIP_REV2,
},
[SAA7164_BOARD_UNKNOWN_REV3] = {
/* Bridge will load the v2 f/w and dump descriptors */
/* Required during new board bringup */
.name = "Generic Rev3",
.chiprev = SAA7164_CHIP_REV3,
},
[SAA7164_BOARD_HAUPPAUGE_HVR2200] = {
.name = "Hauppauge WinTV-HVR2200",
.porta = SAA7164_MPEG_DVB,
.portb = SAA7164_MPEG_DVB,
.portc = SAA7164_MPEG_ENCODER,
.portd = SAA7164_MPEG_ENCODER,
.porte = SAA7164_MPEG_VBI,
.portf = SAA7164_MPEG_VBI,
.chiprev = SAA7164_CHIP_REV3,
.unit = {{
.id = 0x1d,
.type = SAA7164_UNIT_EEPROM,
.name = "4K EEPROM",
.i2c_bus_nr = SAA7164_I2C_BUS_0,
.i2c_bus_addr = 0xa0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x04,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-1",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x1b,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-2",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x1e,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "TDA10048-1",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0x10 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x1f,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "TDA10048-2",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0x12 >> 1,
.i2c_reg_len = REGLEN_8bit,
} },
},
[SAA7164_BOARD_HAUPPAUGE_HVR2200_2] = {
.name = "Hauppauge WinTV-HVR2200",
.porta = SAA7164_MPEG_DVB,
.portb = SAA7164_MPEG_DVB,
.portc = SAA7164_MPEG_ENCODER,
.portd = SAA7164_MPEG_ENCODER,
.porte = SAA7164_MPEG_VBI,
.portf = SAA7164_MPEG_VBI,
.chiprev = SAA7164_CHIP_REV2,
.unit = {{
.id = 0x06,
.type = SAA7164_UNIT_EEPROM,
.name = "4K EEPROM",
.i2c_bus_nr = SAA7164_I2C_BUS_0,
.i2c_bus_addr = 0xa0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x04,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-1",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x05,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "TDA10048-1",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0x10 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x1e,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-2",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x1f,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "TDA10048-2",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0x12 >> 1,
.i2c_reg_len = REGLEN_8bit,
} },
},
[SAA7164_BOARD_HAUPPAUGE_HVR2200_3] = {
.name = "Hauppauge WinTV-HVR2200",
.porta = SAA7164_MPEG_DVB,
.portb = SAA7164_MPEG_DVB,
.portc = SAA7164_MPEG_ENCODER,
.portd = SAA7164_MPEG_ENCODER,
.porte = SAA7164_MPEG_VBI,
.portf = SAA7164_MPEG_VBI,
.chiprev = SAA7164_CHIP_REV2,
.unit = {{
.id = 0x1d,
.type = SAA7164_UNIT_EEPROM,
.name = "4K EEPROM",
.i2c_bus_nr = SAA7164_I2C_BUS_0,
.i2c_bus_addr = 0xa0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x04,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-1",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x05,
.type = SAA7164_UNIT_ANALOG_DEMODULATOR,
.name = "TDA8290-1",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0x84 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x1b,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-2",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x1c,
.type = SAA7164_UNIT_ANALOG_DEMODULATOR,
.name = "TDA8290-2",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0x84 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x1e,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "TDA10048-1",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0x10 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x1f,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "TDA10048-2",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0x12 >> 1,
.i2c_reg_len = REGLEN_8bit,
} },
},
[SAA7164_BOARD_HAUPPAUGE_HVR2250] = {
.name = "Hauppauge WinTV-HVR2250",
.porta = SAA7164_MPEG_DVB,
.portb = SAA7164_MPEG_DVB,
.portc = SAA7164_MPEG_ENCODER,
.portd = SAA7164_MPEG_ENCODER,
.portc = SAA7164_MPEG_ENCODER,
.portd = SAA7164_MPEG_ENCODER,
.porte = SAA7164_MPEG_VBI,
.portf = SAA7164_MPEG_VBI,
.chiprev = SAA7164_CHIP_REV3,
.unit = {{
.id = 0x22,
.type = SAA7164_UNIT_EEPROM,
.name = "4K EEPROM",
.i2c_bus_nr = SAA7164_I2C_BUS_0,
.i2c_bus_addr = 0xa0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x04,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-1",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x07,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-1 (TOP)",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0x32 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x08,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-1 (QAM)",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0x34 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x1e,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-2",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x20,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-2 (TOP)",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0x32 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x23,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-2 (QAM)",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0x34 >> 1,
.i2c_reg_len = REGLEN_8bit,
} },
},
[SAA7164_BOARD_HAUPPAUGE_HVR2250_2] = {
.name = "Hauppauge WinTV-HVR2250",
.porta = SAA7164_MPEG_DVB,
.portb = SAA7164_MPEG_DVB,
.portc = SAA7164_MPEG_ENCODER,
.portd = SAA7164_MPEG_ENCODER,
.porte = SAA7164_MPEG_VBI,
.portf = SAA7164_MPEG_VBI,
.porte = SAA7164_MPEG_VBI,
.portf = SAA7164_MPEG_VBI,
.chiprev = SAA7164_CHIP_REV3,
.unit = {{
.id = 0x28,
.type = SAA7164_UNIT_EEPROM,
.name = "4K EEPROM",
.i2c_bus_nr = SAA7164_I2C_BUS_0,
.i2c_bus_addr = 0xa0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x04,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-1",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x07,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-1 (TOP)",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0x32 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x08,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-1 (QAM)",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0x34 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x24,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-2",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x26,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-2 (TOP)",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0x32 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x29,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-2 (QAM)",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0x34 >> 1,
.i2c_reg_len = REGLEN_8bit,
} },
},
[SAA7164_BOARD_HAUPPAUGE_HVR2250_3] = {
.name = "Hauppauge WinTV-HVR2250",
.porta = SAA7164_MPEG_DVB,
.portb = SAA7164_MPEG_DVB,
.portc = SAA7164_MPEG_ENCODER,
.portd = SAA7164_MPEG_ENCODER,
.porte = SAA7164_MPEG_VBI,
.portf = SAA7164_MPEG_VBI,
.chiprev = SAA7164_CHIP_REV3,
.unit = {{
.id = 0x26,
.type = SAA7164_UNIT_EEPROM,
.name = "4K EEPROM",
.i2c_bus_nr = SAA7164_I2C_BUS_0,
.i2c_bus_addr = 0xa0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x04,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-1",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x07,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-1 (TOP)",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0x32 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x08,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-1 (QAM)",
.i2c_bus_nr = SAA7164_I2C_BUS_1,
.i2c_bus_addr = 0x34 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x22,
.type = SAA7164_UNIT_TUNER,
.name = "TDA18271-2",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0xc0 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x24,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-2 (TOP)",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0x32 >> 1,
.i2c_reg_len = REGLEN_8bit,
}, {
.id = 0x27,
.type = SAA7164_UNIT_DIGITAL_DEMODULATOR,
.name = "CX24228/S5H1411-2 (QAM)",
.i2c_bus_nr = SAA7164_I2C_BUS_2,
.i2c_bus_addr = 0x34 >> 1,
.i2c_reg_len = REGLEN_8bit,
} },
},
};
const unsigned int saa7164_bcount = ARRAY_SIZE(saa7164_boards);
/* ------------------------------------------------------------------ */
/* PCI subsystem IDs */
struct saa7164_subid saa7164_subids[] = {
{
.subvendor = 0x0070,
.subdevice = 0x8880,
.card = SAA7164_BOARD_HAUPPAUGE_HVR2250,
}, {
.subvendor = 0x0070,
.subdevice = 0x8810,
.card = SAA7164_BOARD_HAUPPAUGE_HVR2250,
}, {
.subvendor = 0x0070,
.subdevice = 0x8980,
.card = SAA7164_BOARD_HAUPPAUGE_HVR2200,
}, {
.subvendor = 0x0070,
.subdevice = 0x8900,
.card = SAA7164_BOARD_HAUPPAUGE_HVR2200_2,
}, {
.subvendor = 0x0070,
.subdevice = 0x8901,
.card = SAA7164_BOARD_HAUPPAUGE_HVR2200_3,
}, {
.subvendor = 0x0070,
.subdevice = 0x88A1,
.card = SAA7164_BOARD_HAUPPAUGE_HVR2250_3,
}, {
.subvendor = 0x0070,
.subdevice = 0x8891,
.card = SAA7164_BOARD_HAUPPAUGE_HVR2250_2,
}, {
.subvendor = 0x0070,
.subdevice = 0x8851,
.card = SAA7164_BOARD_HAUPPAUGE_HVR2250_2,
},
};
const unsigned int saa7164_idcount = ARRAY_SIZE(saa7164_subids);
void saa7164_card_list(struct saa7164_dev *dev)
{
int i;
if (0 == dev->pci->subsystem_vendor &&
0 == dev->pci->subsystem_device) {
printk(KERN_ERR
"%s: Board has no valid PCIe Subsystem ID and can't\n"
"%s: be autodetected. Pass card=<n> insmod option to\n"
"%s: workaround that. Send complaints to the vendor\n"
"%s: of the TV card. Best regards,\n"
"%s: -- tux\n",
dev->name, dev->name, dev->name, dev->name, dev->name);
} else {
printk(KERN_ERR
"%s: Your board isn't known (yet) to the driver.\n"
"%s: Try to pick one of the existing card configs via\n"
"%s: card=<n> insmod option. Updating to the latest\n"
"%s: version might help as well.\n",
dev->name, dev->name, dev->name, dev->name);
}
printk(KERN_ERR "%s: Here are valid choices for the card=<n> insmod "
"option:\n", dev->name);
for (i = 0; i < saa7164_bcount; i++)
printk(KERN_ERR "%s: card=%d -> %s\n",
dev->name, i, saa7164_boards[i].name);
}
/* TODO: clean this define up into the -cards.c structs */
#define PCIEBRIDGE_UNITID 2
void saa7164_gpio_setup(struct saa7164_dev *dev)
{
switch (dev->board) {
case SAA7164_BOARD_HAUPPAUGE_HVR2200:
case SAA7164_BOARD_HAUPPAUGE_HVR2200_2:
case SAA7164_BOARD_HAUPPAUGE_HVR2200_3:
case SAA7164_BOARD_HAUPPAUGE_HVR2250:
case SAA7164_BOARD_HAUPPAUGE_HVR2250_2:
case SAA7164_BOARD_HAUPPAUGE_HVR2250_3:
/*
GPIO 2: s5h1411 / tda10048-1 demod reset
GPIO 3: s5h1411 / tda10048-2 demod reset
GPIO 7: IRBlaster Zilog reset
*/
/* Reset parts by going in and out of reset */
saa7164_api_clear_gpiobit(dev, PCIEBRIDGE_UNITID, 2);
saa7164_api_clear_gpiobit(dev, PCIEBRIDGE_UNITID, 3);
msleep(20);
saa7164_api_set_gpiobit(dev, PCIEBRIDGE_UNITID, 2);
saa7164_api_set_gpiobit(dev, PCIEBRIDGE_UNITID, 3);
break;
}
}
static void hauppauge_eeprom(struct saa7164_dev *dev, u8 *eeprom_data)
{
struct tveeprom tv;
/* TODO: Assumption: eeprom on bus 0 */
tveeprom_hauppauge_analog(&dev->i2c_bus[0].i2c_client, &tv,
eeprom_data);
/* Make sure we support the board model */
switch (tv.model) {
case 88001:
/* Development board - Limit circulation */
/* WinTV-HVR2250 (PCIe, Retail, full-height bracket)
* ATSC/QAM (TDA18271/S5H1411) and basic analog, no IR, FM */
case 88021:
/* WinTV-HVR2250 (PCIe, Retail, full-height bracket)
* ATSC/QAM (TDA18271/S5H1411) and basic analog, MCE CIR, FM */
break;
case 88041:
/* WinTV-HVR2250 (PCIe, Retail, full-height bracket)
* ATSC/QAM (TDA18271/S5H1411) and basic analog, no IR, FM */
break;
case 88061:
/* WinTV-HVR2250 (PCIe, Retail, full-height bracket)
* ATSC/QAM (TDA18271/S5H1411) and basic analog, FM */
break;
case 89519:
case 89609:
/* WinTV-HVR2200 (PCIe, Retail, full-height)
* DVB-T (TDA18271/TDA10048) and basic analog, no IR */
break;
case 89619:
/* WinTV-HVR2200 (PCIe, Retail, half-height)
* DVB-T (TDA18271/TDA10048) and basic analog, no IR */
break;
default:
printk(KERN_ERR "%s: Warning: Unknown Hauppauge model #%d\n",
dev->name, tv.model);
break;
}
printk(KERN_INFO "%s: Hauppauge eeprom: model=%d\n", dev->name,
tv.model);
}
void saa7164_card_setup(struct saa7164_dev *dev)
{
static u8 eeprom[256];
if (dev->i2c_bus[0].i2c_rc == 0) {
if (saa7164_api_read_eeprom(dev, &eeprom[0],
sizeof(eeprom)) < 0)
return;
}
switch (dev->board) {
case SAA7164_BOARD_HAUPPAUGE_HVR2200:
case SAA7164_BOARD_HAUPPAUGE_HVR2200_2:
case SAA7164_BOARD_HAUPPAUGE_HVR2200_3:
case SAA7164_BOARD_HAUPPAUGE_HVR2250:
case SAA7164_BOARD_HAUPPAUGE_HVR2250_2:
case SAA7164_BOARD_HAUPPAUGE_HVR2250_3:
hauppauge_eeprom(dev, &eeprom[0]);
break;
}
}
/* With most other drivers, the kernel expects to communicate with subdrivers
* through i2c. This bridge does not allow that, it does not expose any direct
* access to I2C. Instead we have to communicate through the device f/w for
* register access to 'processing units'. Each unit has a unique
* id, regardless of how the physical implementation occurs across
* the three physical i2c busses. The being said if we want leverge of
* the existing kernel drivers for tuners and demods we have to 'speak i2c',
* to this bridge implements 3 virtual i2c buses. This is a helper function
* for those.
*
* Description: Translate the kernels notion of an i2c address and bus into
* the appropriate unitid.
*/
int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr)
{
/* For a given bus and i2c device address, return the saa7164 unique
* unitid. < 0 on error */
struct saa7164_dev *dev = bus->dev;
struct saa7164_unit *unit;
int i;
for (i = 0; i < SAA7164_MAX_UNITS; i++) {
unit = &saa7164_boards[dev->board].unit[i];
if (unit->type == SAA7164_UNIT_UNDEFINED)
continue;
if ((bus->nr == unit->i2c_bus_nr) &&
(addr == unit->i2c_bus_addr))
return unit->id;
}
return -1;
}
/* The 7164 API needs to know the i2c register length in advance.
* this is a helper function. Based on a specific chip addr and bus return the
* reg length.
*/
int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr)
{
/* For a given bus and i2c device address, return the
* saa7164 registry address width. < 0 on error
*/
struct saa7164_dev *dev = bus->dev;
struct saa7164_unit *unit;
int i;
for (i = 0; i < SAA7164_MAX_UNITS; i++) {
unit = &saa7164_boards[dev->board].unit[i];
if (unit->type == SAA7164_UNIT_UNDEFINED)
continue;
if ((bus->nr == unit->i2c_bus_nr) &&
(addr == unit->i2c_bus_addr))
return unit->i2c_reg_len;
}
return -1;
}
/* TODO: implement a 'findeeprom' functio like the above and fix any other
* eeprom related todo's in -api.c.
*/
/* Translate a unitid into a x readable device name, for display purposes. */
char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid)
{
char *undefed = "UNDEFINED";
char *bridge = "BRIDGE";
struct saa7164_unit *unit;
int i;
if (unitid == 0)
return bridge;
for (i = 0; i < SAA7164_MAX_UNITS; i++) {
unit = &saa7164_boards[dev->board].unit[i];
if (unit->type == SAA7164_UNIT_UNDEFINED)
continue;
if (unitid == unit->id)
return unit->name;
}
return undefed;
}
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