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Diffstat (limited to 'drivers/media/video/saa7164/saa7164-cards.c')
-rw-r--r--drivers/media/video/saa7164/saa7164-cards.c624
1 files changed, 624 insertions, 0 deletions
diff --git a/drivers/media/video/saa7164/saa7164-cards.c b/drivers/media/video/saa7164/saa7164-cards.c
new file mode 100644
index 00000000000..a3c299405f4
--- /dev/null
+++ b/drivers/media/video/saa7164/saa7164-cards.c
@@ -0,0 +1,624 @@
+/*
+ * 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;
+}
+
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-19 15:44:28 +0000