7400516ab4
Move the go7007 driver away from the legacy i2c binding model, which is going away really soon now. The I2C addresses of the audio and video chips in s2250-board didn't look quite right, apparently they were left-aligned values when Linux wants right-aligned values, so I fixed them too. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Greg Kroah-Hartman <gregkh@suse.de>
683 lines
17 KiB
C
683 lines
17 KiB
C
/*
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* Copyright (C) 2005-2006 Micronas USA Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License (Version 2) as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/sched.h>
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#include <linux/spinlock.h>
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#include <linux/unistd.h>
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#include <linux/time.h>
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#include <linux/mm.h>
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#include <linux/vmalloc.h>
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#include <linux/device.h>
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#include <linux/i2c.h>
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#include <linux/firmware.h>
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#include <linux/semaphore.h>
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#include <linux/uaccess.h>
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#include <asm/system.h>
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#include <linux/videodev2.h>
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#include <media/tuner.h>
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#include <media/v4l2-common.h>
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#include "go7007-priv.h"
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#include "wis-i2c.h"
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/*
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* Wait for an interrupt to be delivered from the GO7007SB and return
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* the associated value and data.
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*
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* Must be called with the hw_lock held.
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*/
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int go7007_read_interrupt(struct go7007 *go, u16 *value, u16 *data)
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{
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go->interrupt_available = 0;
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go->hpi_ops->read_interrupt(go);
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if (wait_event_timeout(go->interrupt_waitq,
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go->interrupt_available, 5*HZ) < 0) {
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printk(KERN_ERR "go7007: timeout waiting for read interrupt\n");
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return -1;
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}
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if (!go->interrupt_available)
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return -1;
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go->interrupt_available = 0;
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*value = go->interrupt_value & 0xfffe;
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*data = go->interrupt_data;
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return 0;
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}
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EXPORT_SYMBOL(go7007_read_interrupt);
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/*
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* Read a register/address on the GO7007SB.
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*
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* Must be called with the hw_lock held.
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*/
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int go7007_read_addr(struct go7007 *go, u16 addr, u16 *data)
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{
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int count = 100;
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u16 value;
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if (go7007_write_interrupt(go, 0x0010, addr) < 0)
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return -EIO;
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while (count-- > 0) {
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if (go7007_read_interrupt(go, &value, data) == 0 &&
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value == 0xa000)
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return 0;
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}
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return -EIO;
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}
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EXPORT_SYMBOL(go7007_read_addr);
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/*
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* Send the boot firmware to the encoder, which just wakes it up and lets
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* us talk to the GPIO pins and on-board I2C adapter.
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*
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* Must be called with the hw_lock held.
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*/
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static int go7007_load_encoder(struct go7007 *go)
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{
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const struct firmware *fw_entry;
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char fw_name[] = "go7007fw.bin";
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void *bounce;
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int fw_len, rv = 0;
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u16 intr_val, intr_data;
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if (request_firmware(&fw_entry, fw_name, go->dev)) {
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printk(KERN_ERR
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"go7007: unable to load firmware from file \"%s\"\n",
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fw_name);
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return -1;
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}
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if (fw_entry->size < 16 || memcmp(fw_entry->data, "WISGO7007FW", 11)) {
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printk(KERN_ERR "go7007: file \"%s\" does not appear to be "
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"go7007 firmware\n", fw_name);
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release_firmware(fw_entry);
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return -1;
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}
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fw_len = fw_entry->size - 16;
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bounce = kmalloc(fw_len, GFP_KERNEL);
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if (bounce == NULL) {
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printk(KERN_ERR "go7007: unable to allocate %d bytes for "
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"firmware transfer\n", fw_len);
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release_firmware(fw_entry);
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return -1;
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}
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memcpy(bounce, fw_entry->data + 16, fw_len);
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release_firmware(fw_entry);
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if (go7007_interface_reset(go) < 0 ||
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go7007_send_firmware(go, bounce, fw_len) < 0 ||
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go7007_read_interrupt(go, &intr_val, &intr_data) < 0 ||
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(intr_val & ~0x1) != 0x5a5a) {
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printk(KERN_ERR "go7007: error transferring firmware\n");
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rv = -1;
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}
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kfree(bounce);
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return rv;
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}
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/*
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* Boot the encoder and register the I2C adapter if requested. Do the
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* minimum initialization necessary, since the board-specific code may
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* still need to probe the board ID.
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*
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* Must NOT be called with the hw_lock held.
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*/
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int go7007_boot_encoder(struct go7007 *go, int init_i2c)
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{
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int ret;
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down(&go->hw_lock);
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ret = go7007_load_encoder(go);
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up(&go->hw_lock);
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if (ret < 0)
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return -1;
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if (!init_i2c)
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return 0;
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if (go7007_i2c_init(go) < 0)
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return -1;
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go->i2c_adapter_online = 1;
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return 0;
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}
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EXPORT_SYMBOL(go7007_boot_encoder);
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/*
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* Configure any hardware-related registers in the GO7007, such as GPIO
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* pins and bus parameters, which are board-specific. This assumes
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* the boot firmware has already been downloaded.
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*
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* Must be called with the hw_lock held.
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*/
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static int go7007_init_encoder(struct go7007 *go)
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{
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if (go->board_info->audio_flags & GO7007_AUDIO_I2S_MASTER) {
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go7007_write_addr(go, 0x1000, 0x0811);
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go7007_write_addr(go, 0x1000, 0x0c11);
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}
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if (go->board_id == GO7007_BOARDID_MATRIX_REV) {
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/* Set GPIO pin 0 to be an output (audio clock control) */
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go7007_write_addr(go, 0x3c82, 0x0001);
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go7007_write_addr(go, 0x3c80, 0x00fe);
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}
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return 0;
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}
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/*
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* Send the boot firmware to the GO7007 and configure the registers. This
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* is the only way to stop the encoder once it has started streaming video.
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*
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* Must be called with the hw_lock held.
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*/
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int go7007_reset_encoder(struct go7007 *go)
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{
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if (go7007_load_encoder(go) < 0)
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return -1;
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return go7007_init_encoder(go);
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}
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/*
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* Attempt to instantiate an I2C client by ID, probably loading a module.
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*/
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static int init_i2c_module(struct i2c_adapter *adapter, const char *type,
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int id, int addr)
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{
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struct i2c_board_info info;
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char *modname;
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switch (id) {
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case I2C_DRIVERID_WIS_SAA7115:
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modname = "wis-saa7115";
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break;
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case I2C_DRIVERID_WIS_SAA7113:
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modname = "wis-saa7113";
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break;
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case I2C_DRIVERID_WIS_UDA1342:
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modname = "wis-uda1342";
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break;
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case I2C_DRIVERID_WIS_SONY_TUNER:
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modname = "wis-sony-tuner";
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break;
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case I2C_DRIVERID_WIS_TW9903:
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modname = "wis-tw9903";
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break;
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case I2C_DRIVERID_WIS_TW2804:
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modname = "wis-tw2804";
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break;
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case I2C_DRIVERID_WIS_OV7640:
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modname = "wis-ov7640";
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break;
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case I2C_DRIVERID_S2250:
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modname = "s2250-board";
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break;
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default:
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modname = NULL;
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break;
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}
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if (modname != NULL)
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request_module(modname);
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memset(&info, 0, sizeof(struct i2c_board_info));
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info.addr = addr;
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strlcpy(info.type, type, I2C_NAME_SIZE);
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if (!i2c_new_device(adapter, &info))
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return 0;
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if (modname != NULL)
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printk(KERN_INFO
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"go7007: probing for module %s failed\n", modname);
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else
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printk(KERN_INFO
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"go7007: sensor %u seems to be unsupported!\n", id);
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return -1;
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}
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/*
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* Finalize the GO7007 hardware setup, register the on-board I2C adapter
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* (if used on this board), load the I2C client driver for the sensor
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* (SAA7115 or whatever) and other devices, and register the ALSA and V4L2
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* interfaces.
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*
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* Must NOT be called with the hw_lock held.
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*/
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int go7007_register_encoder(struct go7007 *go)
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{
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int i, ret;
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printk(KERN_INFO "go7007: registering new %s\n", go->name);
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down(&go->hw_lock);
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ret = go7007_init_encoder(go);
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up(&go->hw_lock);
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if (ret < 0)
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return -1;
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if (!go->i2c_adapter_online &&
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go->board_info->flags & GO7007_BOARD_USE_ONBOARD_I2C) {
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if (go7007_i2c_init(go) < 0)
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return -1;
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go->i2c_adapter_online = 1;
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}
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if (go->i2c_adapter_online) {
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for (i = 0; i < go->board_info->num_i2c_devs; ++i)
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init_i2c_module(&go->i2c_adapter,
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go->board_info->i2c_devs[i].type,
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go->board_info->i2c_devs[i].id,
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go->board_info->i2c_devs[i].addr);
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if (go->board_id == GO7007_BOARDID_ADLINK_MPG24)
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i2c_clients_command(&go->i2c_adapter,
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DECODER_SET_CHANNEL, &go->channel_number);
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}
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if (go->board_info->flags & GO7007_BOARD_HAS_AUDIO) {
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go->audio_enabled = 1;
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go7007_snd_init(go);
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}
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return go7007_v4l2_init(go);
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}
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EXPORT_SYMBOL(go7007_register_encoder);
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/*
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* Send the encode firmware to the encoder, which will cause it
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* to immediately start delivering the video and audio streams.
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*
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* Must be called with the hw_lock held.
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*/
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int go7007_start_encoder(struct go7007 *go)
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{
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u8 *fw;
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int fw_len, rv = 0, i;
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u16 intr_val, intr_data;
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go->modet_enable = 0;
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if (!go->dvd_mode)
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for (i = 0; i < 4; ++i) {
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if (go->modet[i].enable) {
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go->modet_enable = 1;
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continue;
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}
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go->modet[i].pixel_threshold = 32767;
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go->modet[i].motion_threshold = 32767;
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go->modet[i].mb_threshold = 32767;
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}
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if (go7007_construct_fw_image(go, &fw, &fw_len) < 0)
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return -1;
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if (go7007_send_firmware(go, fw, fw_len) < 0 ||
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go7007_read_interrupt(go, &intr_val, &intr_data) < 0) {
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printk(KERN_ERR "go7007: error transferring firmware\n");
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rv = -1;
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goto start_error;
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}
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go->state = STATE_DATA;
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go->parse_length = 0;
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go->seen_frame = 0;
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if (go7007_stream_start(go) < 0) {
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printk(KERN_ERR "go7007: error starting stream transfer\n");
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rv = -1;
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goto start_error;
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}
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start_error:
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kfree(fw);
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return rv;
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}
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/*
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* Store a byte in the current video buffer, if there is one.
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*/
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static inline void store_byte(struct go7007_buffer *gobuf, u8 byte)
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{
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if (gobuf != NULL && gobuf->bytesused < GO7007_BUF_SIZE) {
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unsigned int pgidx = gobuf->offset >> PAGE_SHIFT;
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unsigned int pgoff = gobuf->offset & ~PAGE_MASK;
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*((u8 *)page_address(gobuf->pages[pgidx]) + pgoff) = byte;
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++gobuf->offset;
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++gobuf->bytesused;
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}
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}
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/*
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* Deliver the last video buffer and get a new one to start writing to.
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*/
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static void frame_boundary(struct go7007 *go)
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{
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struct go7007_buffer *gobuf;
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int i;
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if (go->active_buf) {
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if (go->active_buf->modet_active) {
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if (go->active_buf->bytesused + 216 < GO7007_BUF_SIZE) {
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for (i = 0; i < 216; ++i)
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store_byte(go->active_buf,
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go->active_map[i]);
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go->active_buf->bytesused -= 216;
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} else
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go->active_buf->modet_active = 0;
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}
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go->active_buf->state = BUF_STATE_DONE;
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wake_up_interruptible(&go->frame_waitq);
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go->active_buf = NULL;
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}
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list_for_each_entry(gobuf, &go->stream, stream)
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if (gobuf->state == BUF_STATE_QUEUED) {
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gobuf->seq = go->next_seq;
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do_gettimeofday(&gobuf->timestamp);
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go->active_buf = gobuf;
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break;
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}
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++go->next_seq;
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}
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static void write_bitmap_word(struct go7007 *go)
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{
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int x, y, i, stride = ((go->width >> 4) + 7) >> 3;
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for (i = 0; i < 16; ++i) {
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y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4);
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x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4);
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go->active_map[stride * y + (x >> 3)] |=
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(go->modet_word & 1) << (x & 0x7);
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go->modet_word >>= 1;
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}
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}
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/*
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* Parse a chunk of the video stream into frames. The frames are not
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* delimited by the hardware, so we have to parse the frame boundaries
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* based on the type of video stream we're receiving.
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*/
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void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length)
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{
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int i, seq_start_code = -1, frame_start_code = -1;
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spin_lock(&go->spinlock);
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switch (go->format) {
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case GO7007_FORMAT_MPEG4:
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seq_start_code = 0xB0;
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frame_start_code = 0xB6;
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break;
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case GO7007_FORMAT_MPEG1:
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case GO7007_FORMAT_MPEG2:
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seq_start_code = 0xB3;
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frame_start_code = 0x00;
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break;
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}
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for (i = 0; i < length; ++i) {
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if (go->active_buf != NULL &&
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go->active_buf->bytesused >= GO7007_BUF_SIZE - 3) {
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printk(KERN_DEBUG "go7007: dropping oversized frame\n");
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go->active_buf->offset -= go->active_buf->bytesused;
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go->active_buf->bytesused = 0;
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go->active_buf->modet_active = 0;
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go->active_buf = NULL;
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}
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switch (go->state) {
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case STATE_DATA:
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switch (buf[i]) {
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case 0x00:
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go->state = STATE_00;
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break;
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case 0xFF:
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go->state = STATE_FF;
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break;
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default:
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store_byte(go->active_buf, buf[i]);
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break;
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}
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break;
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case STATE_00:
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switch (buf[i]) {
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case 0x00:
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go->state = STATE_00_00;
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break;
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case 0xFF:
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store_byte(go->active_buf, 0x00);
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go->state = STATE_FF;
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break;
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default:
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store_byte(go->active_buf, 0x00);
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store_byte(go->active_buf, buf[i]);
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go->state = STATE_DATA;
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break;
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}
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break;
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case STATE_00_00:
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switch (buf[i]) {
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case 0x00:
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store_byte(go->active_buf, 0x00);
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/* go->state remains STATE_00_00 */
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break;
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case 0x01:
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go->state = STATE_00_00_01;
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break;
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case 0xFF:
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store_byte(go->active_buf, 0x00);
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store_byte(go->active_buf, 0x00);
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go->state = STATE_FF;
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break;
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default:
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store_byte(go->active_buf, 0x00);
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store_byte(go->active_buf, 0x00);
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store_byte(go->active_buf, buf[i]);
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go->state = STATE_DATA;
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break;
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}
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break;
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case STATE_00_00_01:
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/* If this is the start of a new MPEG frame,
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* get a new buffer */
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if ((go->format == GO7007_FORMAT_MPEG1 ||
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go->format == GO7007_FORMAT_MPEG2 ||
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go->format == GO7007_FORMAT_MPEG4) &&
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(buf[i] == seq_start_code ||
|
|
buf[i] == 0xB8 || /* GOP code */
|
|
buf[i] == frame_start_code)) {
|
|
if (go->active_buf == NULL || go->seen_frame)
|
|
frame_boundary(go);
|
|
if (buf[i] == frame_start_code) {
|
|
if (go->active_buf != NULL)
|
|
go->active_buf->frame_offset =
|
|
go->active_buf->offset;
|
|
go->seen_frame = 1;
|
|
} else {
|
|
go->seen_frame = 0;
|
|
}
|
|
}
|
|
/* Handle any special chunk types, or just write the
|
|
* start code to the (potentially new) buffer */
|
|
switch (buf[i]) {
|
|
case 0xF5: /* timestamp */
|
|
go->parse_length = 12;
|
|
go->state = STATE_UNPARSED;
|
|
break;
|
|
case 0xF6: /* vbi */
|
|
go->state = STATE_VBI_LEN_A;
|
|
break;
|
|
case 0xF8: /* MD map */
|
|
go->parse_length = 0;
|
|
memset(go->active_map, 0,
|
|
sizeof(go->active_map));
|
|
go->state = STATE_MODET_MAP;
|
|
break;
|
|
case 0xFF: /* Potential JPEG start code */
|
|
store_byte(go->active_buf, 0x00);
|
|
store_byte(go->active_buf, 0x00);
|
|
store_byte(go->active_buf, 0x01);
|
|
go->state = STATE_FF;
|
|
break;
|
|
default:
|
|
store_byte(go->active_buf, 0x00);
|
|
store_byte(go->active_buf, 0x00);
|
|
store_byte(go->active_buf, 0x01);
|
|
store_byte(go->active_buf, buf[i]);
|
|
go->state = STATE_DATA;
|
|
break;
|
|
}
|
|
break;
|
|
case STATE_FF:
|
|
switch (buf[i]) {
|
|
case 0x00:
|
|
store_byte(go->active_buf, 0xFF);
|
|
go->state = STATE_00;
|
|
break;
|
|
case 0xFF:
|
|
store_byte(go->active_buf, 0xFF);
|
|
/* go->state remains STATE_FF */
|
|
break;
|
|
case 0xD8:
|
|
if (go->format == GO7007_FORMAT_MJPEG)
|
|
frame_boundary(go);
|
|
/* fall through */
|
|
default:
|
|
store_byte(go->active_buf, 0xFF);
|
|
store_byte(go->active_buf, buf[i]);
|
|
go->state = STATE_DATA;
|
|
break;
|
|
}
|
|
break;
|
|
case STATE_VBI_LEN_A:
|
|
go->parse_length = buf[i] << 8;
|
|
go->state = STATE_VBI_LEN_B;
|
|
break;
|
|
case STATE_VBI_LEN_B:
|
|
go->parse_length |= buf[i];
|
|
if (go->parse_length > 0)
|
|
go->state = STATE_UNPARSED;
|
|
else
|
|
go->state = STATE_DATA;
|
|
break;
|
|
case STATE_MODET_MAP:
|
|
if (go->parse_length < 204) {
|
|
if (go->parse_length & 1) {
|
|
go->modet_word |= buf[i];
|
|
write_bitmap_word(go);
|
|
} else
|
|
go->modet_word = buf[i] << 8;
|
|
} else if (go->parse_length == 207 && go->active_buf) {
|
|
go->active_buf->modet_active = buf[i];
|
|
}
|
|
if (++go->parse_length == 208)
|
|
go->state = STATE_DATA;
|
|
break;
|
|
case STATE_UNPARSED:
|
|
if (--go->parse_length == 0)
|
|
go->state = STATE_DATA;
|
|
break;
|
|
}
|
|
}
|
|
|
|
spin_unlock(&go->spinlock);
|
|
}
|
|
EXPORT_SYMBOL(go7007_parse_video_stream);
|
|
|
|
/*
|
|
* Allocate a new go7007 struct. Used by the hardware-specific probe.
|
|
*/
|
|
struct go7007 *go7007_alloc(struct go7007_board_info *board, struct device *dev)
|
|
{
|
|
struct go7007 *go;
|
|
int i;
|
|
|
|
go = kmalloc(sizeof(struct go7007), GFP_KERNEL);
|
|
if (go == NULL)
|
|
return NULL;
|
|
go->dev = dev;
|
|
go->board_info = board;
|
|
go->board_id = 0;
|
|
go->tuner_type = -1;
|
|
go->channel_number = 0;
|
|
go->name[0] = 0;
|
|
init_MUTEX(&go->hw_lock);
|
|
init_waitqueue_head(&go->frame_waitq);
|
|
spin_lock_init(&go->spinlock);
|
|
go->video_dev = NULL;
|
|
go->ref_count = 0;
|
|
go->status = STATUS_INIT;
|
|
memset(&go->i2c_adapter, 0, sizeof(go->i2c_adapter));
|
|
go->i2c_adapter_online = 0;
|
|
go->interrupt_available = 0;
|
|
init_waitqueue_head(&go->interrupt_waitq);
|
|
go->in_use = 0;
|
|
go->input = 0;
|
|
if (board->sensor_flags & GO7007_SENSOR_TV) {
|
|
go->standard = GO7007_STD_NTSC;
|
|
go->width = 720;
|
|
go->height = 480;
|
|
go->sensor_framerate = 30000;
|
|
} else {
|
|
go->standard = GO7007_STD_OTHER;
|
|
go->width = board->sensor_width;
|
|
go->height = board->sensor_height;
|
|
go->sensor_framerate = board->sensor_framerate;
|
|
}
|
|
go->encoder_v_offset = board->sensor_v_offset;
|
|
go->encoder_h_offset = board->sensor_h_offset;
|
|
go->encoder_h_halve = 0;
|
|
go->encoder_v_halve = 0;
|
|
go->encoder_subsample = 0;
|
|
go->streaming = 0;
|
|
go->format = GO7007_FORMAT_MJPEG;
|
|
go->bitrate = 1500000;
|
|
go->fps_scale = 1;
|
|
go->pali = 0;
|
|
go->aspect_ratio = GO7007_RATIO_1_1;
|
|
go->gop_size = 0;
|
|
go->ipb = 0;
|
|
go->closed_gop = 0;
|
|
go->repeat_seqhead = 0;
|
|
go->seq_header_enable = 0;
|
|
go->gop_header_enable = 0;
|
|
go->dvd_mode = 0;
|
|
go->interlace_coding = 0;
|
|
for (i = 0; i < 4; ++i)
|
|
go->modet[i].enable = 0;;
|
|
for (i = 0; i < 1624; ++i)
|
|
go->modet_map[i] = 0;
|
|
go->audio_deliver = NULL;
|
|
go->audio_enabled = 0;
|
|
INIT_LIST_HEAD(&go->stream);
|
|
|
|
return go;
|
|
}
|
|
EXPORT_SYMBOL(go7007_alloc);
|
|
|
|
/*
|
|
* Detach and unregister the encoder. The go7007 struct won't be freed
|
|
* until v4l2 finishes releasing its resources and all associated fds are
|
|
* closed by applications.
|
|
*/
|
|
void go7007_remove(struct go7007 *go)
|
|
{
|
|
if (go->i2c_adapter_online) {
|
|
if (i2c_del_adapter(&go->i2c_adapter) == 0)
|
|
go->i2c_adapter_online = 0;
|
|
else
|
|
printk(KERN_ERR
|
|
"go7007: error removing I2C adapter!\n");
|
|
}
|
|
|
|
if (go->audio_enabled)
|
|
go7007_snd_remove(go);
|
|
go7007_v4l2_remove(go);
|
|
}
|
|
EXPORT_SYMBOL(go7007_remove);
|
|
|
|
MODULE_LICENSE("GPL v2");
|