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906 lines
26 KiB
C
906 lines
26 KiB
C
/*
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* Zoran ZR36050 basic configuration functions
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*
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* Copyright (C) 2001 Wolfgang Scherr <scherr@net4you.at>
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*
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* $Id: zr36050.c,v 1.1.2.11 2003/08/03 14:54:53 rbultje Exp $
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*
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* ------------------------------------------------------------------------
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* ------------------------------------------------------------------------
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*/
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#define ZR050_VERSION "v0.7.1"
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/types.h>
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#include <linux/wait.h>
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/* includes for structures and defines regarding video
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#include<linux/videodev.h> */
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/* I/O commands, error codes */
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#include<asm/io.h>
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//#include<errno.h>
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/* headerfile of this module */
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#include"zr36050.h"
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/* codec io API */
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#include"videocodec.h"
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/* it doesn't make sense to have more than 20 or so,
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just to prevent some unwanted loops */
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#define MAX_CODECS 20
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/* amount of chips attached via this driver */
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static int zr36050_codecs = 0;
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/* debugging is available via module parameter */
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static int debug = 0;
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module_param(debug, int, 0);
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MODULE_PARM_DESC(debug, "Debug level (0-4)");
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#define dprintk(num, format, args...) \
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do { \
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if (debug >= num) \
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printk(format, ##args); \
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} while (0)
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/* =========================================================================
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Local hardware I/O functions:
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read/write via codec layer (registers are located in the master device)
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========================================================================= */
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/* read and write functions */
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static u8
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zr36050_read (struct zr36050 *ptr,
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u16 reg)
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{
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u8 value = 0;
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// just in case something is wrong...
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if (ptr->codec->master_data->readreg)
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value = (ptr->codec->master_data->readreg(ptr->codec,
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reg)) & 0xFF;
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else
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dprintk(1,
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KERN_ERR "%s: invalid I/O setup, nothing read!\n",
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ptr->name);
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dprintk(4, "%s: reading from 0x%04x: %02x\n", ptr->name, reg,
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value);
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return value;
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}
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static void
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zr36050_write (struct zr36050 *ptr,
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u16 reg,
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u8 value)
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{
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dprintk(4, "%s: writing 0x%02x to 0x%04x\n", ptr->name, value,
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reg);
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// just in case something is wrong...
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if (ptr->codec->master_data->writereg)
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ptr->codec->master_data->writereg(ptr->codec, reg, value);
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else
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dprintk(1,
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KERN_ERR
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"%s: invalid I/O setup, nothing written!\n",
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ptr->name);
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}
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/* =========================================================================
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Local helper function:
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status read
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========================================================================= */
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/* status is kept in datastructure */
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static u8
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zr36050_read_status1 (struct zr36050 *ptr)
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{
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ptr->status1 = zr36050_read(ptr, ZR050_STATUS_1);
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zr36050_read(ptr, 0);
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return ptr->status1;
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}
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/* =========================================================================
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Local helper function:
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scale factor read
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========================================================================= */
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/* scale factor is kept in datastructure */
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static u16
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zr36050_read_scalefactor (struct zr36050 *ptr)
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{
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ptr->scalefact = (zr36050_read(ptr, ZR050_SF_HI) << 8) |
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(zr36050_read(ptr, ZR050_SF_LO) & 0xFF);
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/* leave 0 selected for an eventually GO from master */
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zr36050_read(ptr, 0);
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return ptr->scalefact;
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}
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/* =========================================================================
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Local helper function:
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wait if codec is ready to proceed (end of processing) or time is over
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========================================================================= */
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static void
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zr36050_wait_end (struct zr36050 *ptr)
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{
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int i = 0;
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while (!(zr36050_read_status1(ptr) & 0x4)) {
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udelay(1);
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if (i++ > 200000) { // 200ms, there is for sure something wrong!!!
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dprintk(1,
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"%s: timout at wait_end (last status: 0x%02x)\n",
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ptr->name, ptr->status1);
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break;
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}
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}
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}
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/* =========================================================================
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Local helper function:
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basic test of "connectivity", writes/reads to/from memory the SOF marker
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========================================================================= */
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static int
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zr36050_basic_test (struct zr36050 *ptr)
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{
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zr36050_write(ptr, ZR050_SOF_IDX, 0x00);
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zr36050_write(ptr, ZR050_SOF_IDX + 1, 0x00);
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if ((zr36050_read(ptr, ZR050_SOF_IDX) |
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zr36050_read(ptr, ZR050_SOF_IDX + 1)) != 0x0000) {
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dprintk(1,
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KERN_ERR
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"%s: attach failed, can't connect to jpeg processor!\n",
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ptr->name);
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return -ENXIO;
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}
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zr36050_write(ptr, ZR050_SOF_IDX, 0xff);
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zr36050_write(ptr, ZR050_SOF_IDX + 1, 0xc0);
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if (((zr36050_read(ptr, ZR050_SOF_IDX) << 8) |
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zr36050_read(ptr, ZR050_SOF_IDX + 1)) != 0xffc0) {
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dprintk(1,
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KERN_ERR
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"%s: attach failed, can't connect to jpeg processor!\n",
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ptr->name);
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return -ENXIO;
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}
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zr36050_wait_end(ptr);
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if ((ptr->status1 & 0x4) == 0) {
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dprintk(1,
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KERN_ERR
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"%s: attach failed, jpeg processor failed (end flag)!\n",
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ptr->name);
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return -EBUSY;
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}
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return 0; /* looks good! */
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}
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/* =========================================================================
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Local helper function:
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simple loop for pushing the init datasets
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========================================================================= */
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static int
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zr36050_pushit (struct zr36050 *ptr,
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u16 startreg,
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u16 len,
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const char *data)
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{
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int i = 0;
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dprintk(4, "%s: write data block to 0x%04x (len=%d)\n", ptr->name,
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startreg, len);
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while (i < len) {
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zr36050_write(ptr, startreg++, data[i++]);
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}
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return i;
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}
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/* =========================================================================
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Basic datasets:
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jpeg baseline setup data (you find it on lots places in internet, or just
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extract it from any regular .jpg image...)
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Could be variable, but until it's not needed it they are just fixed to save
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memory. Otherwise expand zr36050 structure with arrays, push the values to
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it and initalize from there, as e.g. the linux zr36057/60 driver does it.
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========================================================================= */
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static const char zr36050_dqt[0x86] = {
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0xff, 0xdb, //Marker: DQT
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0x00, 0x84, //Length: 2*65+2
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0x00, //Pq,Tq first table
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0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e,
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0x0d, 0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28,
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0x1a, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25,
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0x1d, 0x28, 0x3a, 0x33, 0x3d, 0x3c, 0x39, 0x33,
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0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40, 0x44,
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0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0x51, 0x57,
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0x5f, 0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71,
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0x79, 0x70, 0x64, 0x78, 0x5c, 0x65, 0x67, 0x63,
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0x01, //Pq,Tq second table
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0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2f, 0x1a,
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0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
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};
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static const char zr36050_dht[0x1a4] = {
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0xff, 0xc4, //Marker: DHT
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0x01, 0xa2, //Length: 2*AC, 2*DC
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0x00, //DC first table
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0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
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0x01, //DC second table
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0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
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0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
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0x10, //AC first table
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0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03,
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0x05, 0x05, 0x04, 0x04, 0x00, 0x00,
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0x01, 0x7D, 0x01, 0x02, 0x03, 0x00, 0x04, 0x11,
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0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61,
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0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1,
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0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24,
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0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17,
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0x18, 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34,
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0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44,
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0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56,
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0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66,
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0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
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0x79, 0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88,
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0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
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0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
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0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9,
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0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8,
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0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
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0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
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0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
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0xF8, 0xF9, 0xFA,
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0x11, //AC second table
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0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04,
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0x07, 0x05, 0x04, 0x04, 0x00, 0x01,
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0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04,
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0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
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0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
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0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62,
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0x72, 0xD1, 0x0A, 0x16, 0x24, 0x34, 0xE1, 0x25,
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0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A,
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0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44,
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0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56,
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0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66,
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0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
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0x79, 0x7A, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
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0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
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0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7,
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0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8,
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0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
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0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8,
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0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
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0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8,
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0xF9, 0xFA
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};
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/* jpeg baseline setup, this is just fixed in this driver (YUV pictures) */
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#define NO_OF_COMPONENTS 0x3 //Y,U,V
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#define BASELINE_PRECISION 0x8 //MCU size (?)
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static const char zr36050_tq[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; //table idx's QT
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static const char zr36050_td[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; //table idx's DC
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static const char zr36050_ta[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; //table idx's AC
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/* horizontal 422 decimation setup (maybe we support 411 or so later, too) */
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static const char zr36050_decimation_h[8] = { 2, 1, 1, 0, 0, 0, 0, 0 };
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static const char zr36050_decimation_v[8] = { 1, 1, 1, 0, 0, 0, 0, 0 };
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/* =========================================================================
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Local helper functions:
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calculation and setup of parameter-dependent JPEG baseline segments
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(needed for compression only)
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========================================================================= */
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/* ------------------------------------------------------------------------- */
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/* SOF (start of frame) segment depends on width, height and sampling ratio
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of each color component */
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static int
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zr36050_set_sof (struct zr36050 *ptr)
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{
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char sof_data[34]; // max. size of register set
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int i;
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dprintk(3, "%s: write SOF (%dx%d, %d components)\n", ptr->name,
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ptr->width, ptr->height, NO_OF_COMPONENTS);
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sof_data[0] = 0xff;
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sof_data[1] = 0xc0;
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sof_data[2] = 0x00;
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sof_data[3] = (3 * NO_OF_COMPONENTS) + 8;
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sof_data[4] = BASELINE_PRECISION; // only '8' possible with zr36050
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sof_data[5] = (ptr->height) >> 8;
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sof_data[6] = (ptr->height) & 0xff;
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sof_data[7] = (ptr->width) >> 8;
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sof_data[8] = (ptr->width) & 0xff;
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sof_data[9] = NO_OF_COMPONENTS;
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for (i = 0; i < NO_OF_COMPONENTS; i++) {
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sof_data[10 + (i * 3)] = i; // index identifier
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sof_data[11 + (i * 3)] = (ptr->h_samp_ratio[i] << 4) | (ptr->v_samp_ratio[i]); // sampling ratios
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sof_data[12 + (i * 3)] = zr36050_tq[i]; // Q table selection
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}
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return zr36050_pushit(ptr, ZR050_SOF_IDX,
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(3 * NO_OF_COMPONENTS) + 10, sof_data);
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}
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/* ------------------------------------------------------------------------- */
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/* SOS (start of scan) segment depends on the used scan components
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of each color component */
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static int
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zr36050_set_sos (struct zr36050 *ptr)
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{
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char sos_data[16]; // max. size of register set
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int i;
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dprintk(3, "%s: write SOS\n", ptr->name);
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sos_data[0] = 0xff;
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sos_data[1] = 0xda;
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sos_data[2] = 0x00;
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sos_data[3] = 2 + 1 + (2 * NO_OF_COMPONENTS) + 3;
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sos_data[4] = NO_OF_COMPONENTS;
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for (i = 0; i < NO_OF_COMPONENTS; i++) {
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sos_data[5 + (i * 2)] = i; // index
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sos_data[6 + (i * 2)] = (zr36050_td[i] << 4) | zr36050_ta[i]; // AC/DC tbl.sel.
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}
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sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 2] = 00; // scan start
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sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 3] = 0x3F;
|
|
sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 4] = 00;
|
|
return zr36050_pushit(ptr, ZR050_SOS1_IDX,
|
|
4 + 1 + (2 * NO_OF_COMPONENTS) + 3,
|
|
sos_data);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
/* DRI (define restart interval) */
|
|
|
|
static int
|
|
zr36050_set_dri (struct zr36050 *ptr)
|
|
{
|
|
char dri_data[6]; // max. size of register set
|
|
|
|
dprintk(3, "%s: write DRI\n", ptr->name);
|
|
dri_data[0] = 0xff;
|
|
dri_data[1] = 0xdd;
|
|
dri_data[2] = 0x00;
|
|
dri_data[3] = 0x04;
|
|
dri_data[4] = ptr->dri >> 8;
|
|
dri_data[5] = ptr->dri & 0xff;
|
|
return zr36050_pushit(ptr, ZR050_DRI_IDX, 6, dri_data);
|
|
}
|
|
|
|
/* =========================================================================
|
|
Setup function:
|
|
|
|
Setup compression/decompression of Zoran's JPEG processor
|
|
( see also zoran 36050 manual )
|
|
|
|
... sorry for the spaghetti code ...
|
|
========================================================================= */
|
|
static void
|
|
zr36050_init (struct zr36050 *ptr)
|
|
{
|
|
int sum = 0;
|
|
long bitcnt, tmp;
|
|
|
|
if (ptr->mode == CODEC_DO_COMPRESSION) {
|
|
dprintk(2, "%s: COMPRESSION SETUP\n", ptr->name);
|
|
|
|
/* 050 communicates with 057 in master mode */
|
|
zr36050_write(ptr, ZR050_HARDWARE, ZR050_HW_MSTR);
|
|
|
|
/* encoding table preload for compression */
|
|
zr36050_write(ptr, ZR050_MODE,
|
|
ZR050_MO_COMP | ZR050_MO_TLM);
|
|
zr36050_write(ptr, ZR050_OPTIONS, 0);
|
|
|
|
/* disable all IRQs */
|
|
zr36050_write(ptr, ZR050_INT_REQ_0, 0);
|
|
zr36050_write(ptr, ZR050_INT_REQ_1, 3); // low 2 bits always 1
|
|
|
|
/* volume control settings */
|
|
/*zr36050_write(ptr, ZR050_MBCV, ptr->max_block_vol);*/
|
|
zr36050_write(ptr, ZR050_SF_HI, ptr->scalefact >> 8);
|
|
zr36050_write(ptr, ZR050_SF_LO, ptr->scalefact & 0xff);
|
|
|
|
zr36050_write(ptr, ZR050_AF_HI, 0xff);
|
|
zr36050_write(ptr, ZR050_AF_M, 0xff);
|
|
zr36050_write(ptr, ZR050_AF_LO, 0xff);
|
|
|
|
/* setup the variable jpeg tables */
|
|
sum += zr36050_set_sof(ptr);
|
|
sum += zr36050_set_sos(ptr);
|
|
sum += zr36050_set_dri(ptr);
|
|
|
|
/* setup the fixed jpeg tables - maybe variable, though -
|
|
* (see table init section above) */
|
|
dprintk(3, "%s: write DQT, DHT, APP\n", ptr->name);
|
|
sum += zr36050_pushit(ptr, ZR050_DQT_IDX,
|
|
sizeof(zr36050_dqt), zr36050_dqt);
|
|
sum += zr36050_pushit(ptr, ZR050_DHT_IDX,
|
|
sizeof(zr36050_dht), zr36050_dht);
|
|
zr36050_write(ptr, ZR050_APP_IDX, 0xff);
|
|
zr36050_write(ptr, ZR050_APP_IDX + 1, 0xe0 + ptr->app.appn);
|
|
zr36050_write(ptr, ZR050_APP_IDX + 2, 0x00);
|
|
zr36050_write(ptr, ZR050_APP_IDX + 3, ptr->app.len + 2);
|
|
sum += zr36050_pushit(ptr, ZR050_APP_IDX + 4, 60,
|
|
ptr->app.data) + 4;
|
|
zr36050_write(ptr, ZR050_COM_IDX, 0xff);
|
|
zr36050_write(ptr, ZR050_COM_IDX + 1, 0xfe);
|
|
zr36050_write(ptr, ZR050_COM_IDX + 2, 0x00);
|
|
zr36050_write(ptr, ZR050_COM_IDX + 3, ptr->com.len + 2);
|
|
sum += zr36050_pushit(ptr, ZR050_COM_IDX + 4, 60,
|
|
ptr->com.data) + 4;
|
|
|
|
/* do the internal huffman table preload */
|
|
zr36050_write(ptr, ZR050_MARKERS_EN, ZR050_ME_DHTI);
|
|
|
|
zr36050_write(ptr, ZR050_GO, 1); // launch codec
|
|
zr36050_wait_end(ptr);
|
|
dprintk(2, "%s: Status after table preload: 0x%02x\n",
|
|
ptr->name, ptr->status1);
|
|
|
|
if ((ptr->status1 & 0x4) == 0) {
|
|
dprintk(1, KERN_ERR "%s: init aborted!\n",
|
|
ptr->name);
|
|
return; // something is wrong, its timed out!!!!
|
|
}
|
|
|
|
/* setup misc. data for compression (target code sizes) */
|
|
|
|
/* size of compressed code to reach without header data */
|
|
sum = ptr->real_code_vol - sum;
|
|
bitcnt = sum << 3; /* need the size in bits */
|
|
|
|
tmp = bitcnt >> 16;
|
|
dprintk(3,
|
|
"%s: code: csize=%d, tot=%d, bit=%ld, highbits=%ld\n",
|
|
ptr->name, sum, ptr->real_code_vol, bitcnt, tmp);
|
|
zr36050_write(ptr, ZR050_TCV_NET_HI, tmp >> 8);
|
|
zr36050_write(ptr, ZR050_TCV_NET_MH, tmp & 0xff);
|
|
tmp = bitcnt & 0xffff;
|
|
zr36050_write(ptr, ZR050_TCV_NET_ML, tmp >> 8);
|
|
zr36050_write(ptr, ZR050_TCV_NET_LO, tmp & 0xff);
|
|
|
|
bitcnt -= bitcnt >> 7; // bits without stuffing
|
|
bitcnt -= ((bitcnt * 5) >> 6); // bits without eob
|
|
|
|
tmp = bitcnt >> 16;
|
|
dprintk(3, "%s: code: nettobit=%ld, highnettobits=%ld\n",
|
|
ptr->name, bitcnt, tmp);
|
|
zr36050_write(ptr, ZR050_TCV_DATA_HI, tmp >> 8);
|
|
zr36050_write(ptr, ZR050_TCV_DATA_MH, tmp & 0xff);
|
|
tmp = bitcnt & 0xffff;
|
|
zr36050_write(ptr, ZR050_TCV_DATA_ML, tmp >> 8);
|
|
zr36050_write(ptr, ZR050_TCV_DATA_LO, tmp & 0xff);
|
|
|
|
/* compression setup with or without bitrate control */
|
|
zr36050_write(ptr, ZR050_MODE,
|
|
ZR050_MO_COMP | ZR050_MO_PASS2 |
|
|
(ptr->bitrate_ctrl ? ZR050_MO_BRC : 0));
|
|
|
|
/* this headers seem to deliver "valid AVI" jpeg frames */
|
|
zr36050_write(ptr, ZR050_MARKERS_EN,
|
|
ZR050_ME_DQT | ZR050_ME_DHT |
|
|
((ptr->app.len > 0) ? ZR050_ME_APP : 0) |
|
|
((ptr->com.len > 0) ? ZR050_ME_COM : 0));
|
|
} else {
|
|
dprintk(2, "%s: EXPANSION SETUP\n", ptr->name);
|
|
|
|
/* 050 communicates with 055 in master mode */
|
|
zr36050_write(ptr, ZR050_HARDWARE,
|
|
ZR050_HW_MSTR | ZR050_HW_CFIS_2_CLK);
|
|
|
|
/* encoding table preload */
|
|
zr36050_write(ptr, ZR050_MODE, ZR050_MO_TLM);
|
|
|
|
/* disable all IRQs */
|
|
zr36050_write(ptr, ZR050_INT_REQ_0, 0);
|
|
zr36050_write(ptr, ZR050_INT_REQ_1, 3); // low 2 bits always 1
|
|
|
|
dprintk(3, "%s: write DHT\n", ptr->name);
|
|
zr36050_pushit(ptr, ZR050_DHT_IDX, sizeof(zr36050_dht),
|
|
zr36050_dht);
|
|
|
|
/* do the internal huffman table preload */
|
|
zr36050_write(ptr, ZR050_MARKERS_EN, ZR050_ME_DHTI);
|
|
|
|
zr36050_write(ptr, ZR050_GO, 1); // launch codec
|
|
zr36050_wait_end(ptr);
|
|
dprintk(2, "%s: Status after table preload: 0x%02x\n",
|
|
ptr->name, ptr->status1);
|
|
|
|
if ((ptr->status1 & 0x4) == 0) {
|
|
dprintk(1, KERN_ERR "%s: init aborted!\n",
|
|
ptr->name);
|
|
return; // something is wrong, its timed out!!!!
|
|
}
|
|
|
|
/* setup misc. data for expansion */
|
|
zr36050_write(ptr, ZR050_MODE, 0);
|
|
zr36050_write(ptr, ZR050_MARKERS_EN, 0);
|
|
}
|
|
|
|
/* adr on selected, to allow GO from master */
|
|
zr36050_read(ptr, 0);
|
|
}
|
|
|
|
/* =========================================================================
|
|
CODEC API FUNCTIONS
|
|
|
|
this functions are accessed by the master via the API structure
|
|
========================================================================= */
|
|
|
|
/* set compression/expansion mode and launches codec -
|
|
this should be the last call from the master before starting processing */
|
|
static int
|
|
zr36050_set_mode (struct videocodec *codec,
|
|
int mode)
|
|
{
|
|
struct zr36050 *ptr = (struct zr36050 *) codec->data;
|
|
|
|
dprintk(2, "%s: set_mode %d call\n", ptr->name, mode);
|
|
|
|
if ((mode != CODEC_DO_EXPANSION) && (mode != CODEC_DO_COMPRESSION))
|
|
return -EINVAL;
|
|
|
|
ptr->mode = mode;
|
|
zr36050_init(ptr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* set picture size (norm is ignored as the codec doesn't know about it) */
|
|
static int
|
|
zr36050_set_video (struct videocodec *codec,
|
|
struct tvnorm *norm,
|
|
struct vfe_settings *cap,
|
|
struct vfe_polarity *pol)
|
|
{
|
|
struct zr36050 *ptr = (struct zr36050 *) codec->data;
|
|
int size;
|
|
|
|
dprintk(2, "%s: set_video %d.%d, %d/%d-%dx%d (0x%x) q%d call\n",
|
|
ptr->name, norm->HStart, norm->VStart,
|
|
cap->x, cap->y, cap->width, cap->height,
|
|
cap->decimation, cap->quality);
|
|
/* if () return -EINVAL;
|
|
* trust the master driver that it knows what it does - so
|
|
* we allow invalid startx/y and norm for now ... */
|
|
ptr->width = cap->width / (cap->decimation & 0xff);
|
|
ptr->height = cap->height / ((cap->decimation >> 8) & 0xff);
|
|
|
|
/* (KM) JPEG quality */
|
|
size = ptr->width * ptr->height;
|
|
size *= 16; /* size in bits */
|
|
/* apply quality setting */
|
|
size = size * cap->quality / 200;
|
|
|
|
/* Minimum: 1kb */
|
|
if (size < 8192)
|
|
size = 8192;
|
|
/* Maximum: 7/8 of code buffer */
|
|
if (size > ptr->total_code_vol * 7)
|
|
size = ptr->total_code_vol * 7;
|
|
|
|
ptr->real_code_vol = size >> 3; /* in bytes */
|
|
|
|
/* Set max_block_vol here (previously in zr36050_init, moved
|
|
* here for consistency with zr36060 code */
|
|
zr36050_write(ptr, ZR050_MBCV, ptr->max_block_vol);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* additional control functions */
|
|
static int
|
|
zr36050_control (struct videocodec *codec,
|
|
int type,
|
|
int size,
|
|
void *data)
|
|
{
|
|
struct zr36050 *ptr = (struct zr36050 *) codec->data;
|
|
int *ival = (int *) data;
|
|
|
|
dprintk(2, "%s: control %d call with %d byte\n", ptr->name, type,
|
|
size);
|
|
|
|
switch (type) {
|
|
case CODEC_G_STATUS: /* get last status */
|
|
if (size != sizeof(int))
|
|
return -EFAULT;
|
|
zr36050_read_status1(ptr);
|
|
*ival = ptr->status1;
|
|
break;
|
|
|
|
case CODEC_G_CODEC_MODE:
|
|
if (size != sizeof(int))
|
|
return -EFAULT;
|
|
*ival = CODEC_MODE_BJPG;
|
|
break;
|
|
|
|
case CODEC_S_CODEC_MODE:
|
|
if (size != sizeof(int))
|
|
return -EFAULT;
|
|
if (*ival != CODEC_MODE_BJPG)
|
|
return -EINVAL;
|
|
/* not needed, do nothing */
|
|
return 0;
|
|
|
|
case CODEC_G_VFE:
|
|
case CODEC_S_VFE:
|
|
/* not needed, do nothing */
|
|
return 0;
|
|
|
|
case CODEC_S_MMAP:
|
|
/* not available, give an error */
|
|
return -ENXIO;
|
|
|
|
case CODEC_G_JPEG_TDS_BYTE: /* get target volume in byte */
|
|
if (size != sizeof(int))
|
|
return -EFAULT;
|
|
*ival = ptr->total_code_vol;
|
|
break;
|
|
|
|
case CODEC_S_JPEG_TDS_BYTE: /* get target volume in byte */
|
|
if (size != sizeof(int))
|
|
return -EFAULT;
|
|
ptr->total_code_vol = *ival;
|
|
/* (Kieran Morrissey)
|
|
* code copied from zr36060.c to ensure proper bitrate */
|
|
ptr->real_code_vol = (ptr->total_code_vol * 6) >> 3;
|
|
break;
|
|
|
|
case CODEC_G_JPEG_SCALE: /* get scaling factor */
|
|
if (size != sizeof(int))
|
|
return -EFAULT;
|
|
*ival = zr36050_read_scalefactor(ptr);
|
|
break;
|
|
|
|
case CODEC_S_JPEG_SCALE: /* set scaling factor */
|
|
if (size != sizeof(int))
|
|
return -EFAULT;
|
|
ptr->scalefact = *ival;
|
|
break;
|
|
|
|
case CODEC_G_JPEG_APP_DATA: { /* get appn marker data */
|
|
struct jpeg_app_marker *app = data;
|
|
|
|
if (size != sizeof(struct jpeg_app_marker))
|
|
return -EFAULT;
|
|
|
|
*app = ptr->app;
|
|
break;
|
|
}
|
|
|
|
case CODEC_S_JPEG_APP_DATA: { /* set appn marker data */
|
|
struct jpeg_app_marker *app = data;
|
|
|
|
if (size != sizeof(struct jpeg_app_marker))
|
|
return -EFAULT;
|
|
|
|
ptr->app = *app;
|
|
break;
|
|
}
|
|
|
|
case CODEC_G_JPEG_COM_DATA: { /* get comment marker data */
|
|
struct jpeg_com_marker *com = data;
|
|
|
|
if (size != sizeof(struct jpeg_com_marker))
|
|
return -EFAULT;
|
|
|
|
*com = ptr->com;
|
|
break;
|
|
}
|
|
|
|
case CODEC_S_JPEG_COM_DATA: { /* set comment marker data */
|
|
struct jpeg_com_marker *com = data;
|
|
|
|
if (size != sizeof(struct jpeg_com_marker))
|
|
return -EFAULT;
|
|
|
|
ptr->com = *com;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
/* =========================================================================
|
|
Exit and unregister function:
|
|
|
|
Deinitializes Zoran's JPEG processor
|
|
========================================================================= */
|
|
|
|
static int
|
|
zr36050_unset (struct videocodec *codec)
|
|
{
|
|
struct zr36050 *ptr = codec->data;
|
|
|
|
if (ptr) {
|
|
/* do wee need some codec deinit here, too ???? */
|
|
|
|
dprintk(1, "%s: finished codec #%d\n", ptr->name,
|
|
ptr->num);
|
|
kfree(ptr);
|
|
codec->data = NULL;
|
|
|
|
zr36050_codecs--;
|
|
return 0;
|
|
}
|
|
|
|
return -EFAULT;
|
|
}
|
|
|
|
/* =========================================================================
|
|
Setup and registry function:
|
|
|
|
Initializes Zoran's JPEG processor
|
|
|
|
Also sets pixel size, average code size, mode (compr./decompr.)
|
|
(the given size is determined by the processor with the video interface)
|
|
========================================================================= */
|
|
|
|
static int
|
|
zr36050_setup (struct videocodec *codec)
|
|
{
|
|
struct zr36050 *ptr;
|
|
int res;
|
|
|
|
dprintk(2, "zr36050: initializing MJPEG subsystem #%d.\n",
|
|
zr36050_codecs);
|
|
|
|
if (zr36050_codecs == MAX_CODECS) {
|
|
dprintk(1,
|
|
KERN_ERR "zr36050: Can't attach more codecs!\n");
|
|
return -ENOSPC;
|
|
}
|
|
//mem structure init
|
|
codec->data = ptr = kzalloc(sizeof(struct zr36050), GFP_KERNEL);
|
|
if (NULL == ptr) {
|
|
dprintk(1, KERN_ERR "zr36050: Can't get enough memory!\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
snprintf(ptr->name, sizeof(ptr->name), "zr36050[%d]",
|
|
zr36050_codecs);
|
|
ptr->num = zr36050_codecs++;
|
|
ptr->codec = codec;
|
|
|
|
//testing
|
|
res = zr36050_basic_test(ptr);
|
|
if (res < 0) {
|
|
zr36050_unset(codec);
|
|
return res;
|
|
}
|
|
//final setup
|
|
memcpy(ptr->h_samp_ratio, zr36050_decimation_h, 8);
|
|
memcpy(ptr->v_samp_ratio, zr36050_decimation_v, 8);
|
|
|
|
ptr->bitrate_ctrl = 0; /* 0 or 1 - fixed file size flag
|
|
* (what is the difference?) */
|
|
ptr->mode = CODEC_DO_COMPRESSION;
|
|
ptr->width = 384;
|
|
ptr->height = 288;
|
|
ptr->total_code_vol = 16000;
|
|
ptr->max_block_vol = 240;
|
|
ptr->scalefact = 0x100;
|
|
ptr->dri = 1;
|
|
|
|
/* no app/com marker by default */
|
|
ptr->app.appn = 0;
|
|
ptr->app.len = 0;
|
|
ptr->com.len = 0;
|
|
|
|
zr36050_init(ptr);
|
|
|
|
dprintk(1, KERN_INFO "%s: codec attached and running\n",
|
|
ptr->name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct videocodec zr36050_codec = {
|
|
.owner = THIS_MODULE,
|
|
.name = "zr36050",
|
|
.magic = 0L, // magic not used
|
|
.flags =
|
|
CODEC_FLAG_JPEG | CODEC_FLAG_HARDWARE | CODEC_FLAG_ENCODER |
|
|
CODEC_FLAG_DECODER,
|
|
.type = CODEC_TYPE_ZR36050,
|
|
.setup = zr36050_setup, // functionality
|
|
.unset = zr36050_unset,
|
|
.set_mode = zr36050_set_mode,
|
|
.set_video = zr36050_set_video,
|
|
.control = zr36050_control,
|
|
// others are not used
|
|
};
|
|
|
|
/* =========================================================================
|
|
HOOK IN DRIVER AS KERNEL MODULE
|
|
========================================================================= */
|
|
|
|
static int __init
|
|
zr36050_init_module (void)
|
|
{
|
|
//dprintk(1, "ZR36050 driver %s\n",ZR050_VERSION);
|
|
zr36050_codecs = 0;
|
|
return videocodec_register(&zr36050_codec);
|
|
}
|
|
|
|
static void __exit
|
|
zr36050_cleanup_module (void)
|
|
{
|
|
if (zr36050_codecs) {
|
|
dprintk(1,
|
|
"zr36050: something's wrong - %d codecs left somehow.\n",
|
|
zr36050_codecs);
|
|
}
|
|
videocodec_unregister(&zr36050_codec);
|
|
}
|
|
|
|
module_init(zr36050_init_module);
|
|
module_exit(zr36050_cleanup_module);
|
|
|
|
MODULE_AUTHOR("Wolfgang Scherr <scherr@net4you.at>");
|
|
MODULE_DESCRIPTION("Driver module for ZR36050 jpeg processors "
|
|
ZR050_VERSION);
|
|
MODULE_LICENSE("GPL");
|