| /* |
| * Driver for the NXP SAA7164 PCIe bridge |
| * |
| * Copyright (c) 2009 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, |
| .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, |
| .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, |
| .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, |
| .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, |
| .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, |
| .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(10); |
| |
| 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; |
| } |
| |