// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Zoran ZR36060 basic configuration functions
*
* Copyright ( C ) 2002 Laurent Pinchart < laurent . pinchart @ skynet . be >
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/wait.h>
/* I/O commands, error codes */
#include <linux/io.h>
/* headerfile of this module */
#include "zr36060.h"
/* codec io API */
#include "videocodec.h"
/* it doesn't make sense to have more than 20 or so, just to prevent some unwanted loops */
#define MAX_CODECS 20
/* amount of chips attached via this driver */
static int zr36060_codecs;
static bool low_bitrate;
module_param(low_bitrate, bool , 0 );
MODULE_PARM_DESC(low_bitrate, "Buz compatibility option, halves bitrate" );
/* =========================================================================
* Local hardware I / O functions :
* read / write via codec layer ( registers are located in the master device )
* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
*/
static u8 zr36060_read(struct zr36060 *ptr, u16 reg)
{
u8 value = 0 ;
struct zoran *zr = videocodec_to_zoran(ptr->codec);
// just in case something is wrong...
if (ptr->codec->master_data->readreg)
value = (ptr->codec->master_data->readreg(ptr->codec, reg)) & 0 xff;
else
zrdev_err(zr, "%s: invalid I/O setup, nothing read!\n" , ptr->name);
return value;
}
static void zr36060_write(struct zr36060 *ptr, u16 reg, u8 value)
{
struct zoran *zr = videocodec_to_zoran(ptr->codec);
zrdev_dbg(zr, "0x%02x @0x%04x\n" , value, reg);
// just in case something is wrong...
if (ptr->codec->master_data->writereg)
ptr->codec->master_data->writereg(ptr->codec, reg, value);
else
zrdev_err(zr, "%s: invalid I/O setup, nothing written!\n" , ptr->name);
}
/* =========================================================================
* Local helper function :
* status read
* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
*/
/* status is kept in datastructure */
static u8 zr36060_read_status(struct zr36060 *ptr)
{
ptr->status = zr36060_read(ptr, ZR060_CFSR);
zr36060_read(ptr, 0 );
return ptr->status;
}
/* scale factor is kept in datastructure */
static u16 zr36060_read_scalefactor(struct zr36060 *ptr)
{
ptr->scalefact = (zr36060_read(ptr, ZR060_SF_HI) << 8 ) |
(zr36060_read(ptr, ZR060_SF_LO) & 0 xFF);
/* leave 0 selected for an eventually GO from master */
zr36060_read(ptr, 0 );
return ptr->scalefact;
}
/* wait if codec is ready to proceed (end of processing) or time is over */
static void zr36060_wait_end(struct zr36060 *ptr)
{
struct zoran *zr = videocodec_to_zoran(ptr->codec);
int i = 0 ;
while (zr36060_read_status(ptr) & ZR060_CFSR_BUSY) {
udelay(1 );
if (i++ > 200000 ) { // 200ms, there is for sure something wrong!!!
zrdev_dbg(zr,
"%s: timeout at wait_end (last status: 0x%02x)\n" ,
ptr->name, ptr->status);
break ;
}
}
}
/* Basic test of "connectivity", writes/reads to/from memory the SOF marker */
static int zr36060_basic_test(struct zr36060 *ptr)
{
struct zoran *zr = videocodec_to_zoran(ptr->codec);
if ((zr36060_read(ptr, ZR060_IDR_DEV) != 0 x33) &&
(zr36060_read(ptr, ZR060_IDR_REV) != 0 x01)) {
zrdev_err(zr, "%s: attach failed, can't connect to jpeg processor!\n" , ptr->name);
return -ENXIO;
}
zr36060_wait_end(ptr);
if (ptr->status & ZR060_CFSR_BUSY) {
zrdev_err(zr, "%s: attach failed, jpeg processor failed (end flag)!\n" , ptr->name);
return -EBUSY;
}
return 0 ; /* looks good! */
}
/* simple loop for pushing the init datasets */
static int zr36060_pushit(struct zr36060 *ptr, u16 startreg, u16 len, const char *data)
{
struct zoran *zr = videocodec_to_zoran(ptr->codec);
int i = 0 ;
zrdev_dbg(zr, "%s: write data block to 0x%04x (len=%d)\n" , ptr->name,
startreg, len);
while (i < len)
zr36060_write(ptr, startreg++, data[i++]);
return i;
}
/* =========================================================================
* Basic datasets :
* jpeg baseline setup data ( you find it on lots places in internet , or just
* extract it from any regular . jpg image . . . )
*
* Could be variable , but until it ' s not needed it they are just fixed to save
* memory . Otherwise expand zr36060 structure with arrays , push the values to
* it and initialize from there , as e . g . the linux zr36057 / 60 driver does it .
* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
*/
static const char zr36060_dqt[0 x86] = {
0 xff, 0 xdb, //Marker: DQT
0 x00, 0 x84, //Length: 2*65+2
0 x00, //Pq,Tq first table
0 x10, 0 x0b, 0 x0c, 0 x0e, 0 x0c, 0 x0a, 0 x10, 0 x0e,
0 x0d, 0 x0e, 0 x12, 0 x11, 0 x10, 0 x13, 0 x18, 0 x28,
0 x1a, 0 x18, 0 x16, 0 x16, 0 x18, 0 x31, 0 x23, 0 x25,
0 x1d, 0 x28, 0 x3a, 0 x33, 0 x3d, 0 x3c, 0 x39, 0 x33,
0 x38, 0 x37, 0 x40, 0 x48, 0 x5c, 0 x4e, 0 x40, 0 x44,
0 x57, 0 x45, 0 x37, 0 x38, 0 x50, 0 x6d, 0 x51, 0 x57,
0 x5f, 0 x62, 0 x67, 0 x68, 0 x67, 0 x3e, 0 x4d, 0 x71,
0 x79, 0 x70, 0 x64, 0 x78, 0 x5c, 0 x65, 0 x67, 0 x63,
0 x01, //Pq,Tq second table
0 x11, 0 x12, 0 x12, 0 x18, 0 x15, 0 x18, 0 x2f, 0 x1a,
0 x1a, 0 x2f, 0 x63, 0 x42, 0 x38, 0 x42, 0 x63, 0 x63,
0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63,
0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63,
0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63,
0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63,
0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63,
0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63, 0 x63
};
static const char zr36060_dht[0 x1a4] = {
0 xff, 0 xc4, //Marker: DHT
0 x01, 0 xa2, //Length: 2*AC, 2*DC
0 x00, //DC first table
0 x00, 0 x01, 0 x05, 0 x01, 0 x01, 0 x01, 0 x01, 0 x01,
0 x01, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x01,
0 x02, 0 x03, 0 x04, 0 x05, 0 x06, 0 x07, 0 x08, 0 x09, 0 x0A, 0 x0B,
0 x01, //DC second table
0 x00, 0 x03, 0 x01, 0 x01, 0 x01, 0 x01, 0 x01, 0 x01,
0 x01, 0 x01, 0 x01, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x01,
0 x02, 0 x03, 0 x04, 0 x05, 0 x06, 0 x07, 0 x08, 0 x09, 0 x0A, 0 x0B,
0 x10, //AC first table
0 x00, 0 x02, 0 x01, 0 x03, 0 x03, 0 x02, 0 x04, 0 x03,
0 x05, 0 x05, 0 x04, 0 x04, 0 x00, 0 x00,
0 x01, 0 x7D, 0 x01, 0 x02, 0 x03, 0 x00, 0 x04, 0 x11,
0 x05, 0 x12, 0 x21, 0 x31, 0 x41, 0 x06, 0 x13, 0 x51, 0 x61,
0 x07, 0 x22, 0 x71, 0 x14, 0 x32, 0 x81, 0 x91, 0 xA1,
0 x08, 0 x23, 0 x42, 0 xB1, 0 xC1, 0 x15, 0 x52, 0 xD1, 0 xF0, 0 x24,
0 x33, 0 x62, 0 x72, 0 x82, 0 x09, 0 x0A, 0 x16, 0 x17,
0 x18, 0 x19, 0 x1A, 0 x25, 0 x26, 0 x27, 0 x28, 0 x29, 0 x2A, 0 x34,
0 x35, 0 x36, 0 x37, 0 x38, 0 x39, 0 x3A, 0 x43, 0 x44,
0 x45, 0 x46, 0 x47, 0 x48, 0 x49, 0 x4A, 0 x53, 0 x54, 0 x55, 0 x56,
0 x57, 0 x58, 0 x59, 0 x5A, 0 x63, 0 x64, 0 x65, 0 x66,
0 x67, 0 x68, 0 x69, 0 x6A, 0 x73, 0 x74, 0 x75, 0 x76, 0 x77, 0 x78,
0 x79, 0 x7A, 0 x83, 0 x84, 0 x85, 0 x86, 0 x87, 0 x88,
0 x89, 0 x8A, 0 x92, 0 x93, 0 x94, 0 x95, 0 x96, 0 x97, 0 x98, 0 x99,
0 x9A, 0 xA2, 0 xA3, 0 xA4, 0 xA5, 0 xA6, 0 xA7, 0 xA8,
0 xA9, 0 xAA, 0 xB2, 0 xB3, 0 xB4, 0 xB5, 0 xB6, 0 xB7, 0 xB8, 0 xB9,
0 xBA, 0 xC2, 0 xC3, 0 xC4, 0 xC5, 0 xC6, 0 xC7, 0 xC8,
0 xC9, 0 xCA, 0 xD2, 0 xD3, 0 xD4, 0 xD5, 0 xD6, 0 xD7, 0 xD8, 0 xD9,
0 xDA, 0 xE1, 0 xE2, 0 xE3, 0 xE4, 0 xE5, 0 xE6, 0 xE7,
0 xE8, 0 xE9, 0 xEA, 0 xF1, 0 xF2, 0 xF3, 0 xF4, 0 xF5, 0 xF6, 0 xF7,
0 xF8, 0 xF9, 0 xFA,
0 x11, //AC second table
0 x00, 0 x02, 0 x01, 0 x02, 0 x04, 0 x04, 0 x03, 0 x04,
0 x07, 0 x05, 0 x04, 0 x04, 0 x00, 0 x01,
0 x02, 0 x77, 0 x00, 0 x01, 0 x02, 0 x03, 0 x11, 0 x04,
0 x05, 0 x21, 0 x31, 0 x06, 0 x12, 0 x41, 0 x51, 0 x07, 0 x61, 0 x71,
0 x13, 0 x22, 0 x32, 0 x81, 0 x08, 0 x14, 0 x42, 0 x91,
0 xA1, 0 xB1, 0 xC1, 0 x09, 0 x23, 0 x33, 0 x52, 0 xF0, 0 x15, 0 x62,
0 x72, 0 xD1, 0 x0A, 0 x16, 0 x24, 0 x34, 0 xE1, 0 x25,
0 xF1, 0 x17, 0 x18, 0 x19, 0 x1A, 0 x26, 0 x27, 0 x28, 0 x29, 0 x2A,
0 x35, 0 x36, 0 x37, 0 x38, 0 x39, 0 x3A, 0 x43, 0 x44,
0 x45, 0 x46, 0 x47, 0 x48, 0 x49, 0 x4A, 0 x53, 0 x54, 0 x55, 0 x56,
0 x57, 0 x58, 0 x59, 0 x5A, 0 x63, 0 x64, 0 x65, 0 x66,
0 x67, 0 x68, 0 x69, 0 x6A, 0 x73, 0 x74, 0 x75, 0 x76, 0 x77, 0 x78,
0 x79, 0 x7A, 0 x82, 0 x83, 0 x84, 0 x85, 0 x86, 0 x87,
0 x88, 0 x89, 0 x8A, 0 x92, 0 x93, 0 x94, 0 x95, 0 x96, 0 x97, 0 x98,
0 x99, 0 x9A, 0 xA2, 0 xA3, 0 xA4, 0 xA5, 0 xA6, 0 xA7,
0 xA8, 0 xA9, 0 xAA, 0 xB2, 0 xB3, 0 xB4, 0 xB5, 0 xB6, 0 xB7, 0 xB8,
0 xB9, 0 xBA, 0 xC2, 0 xC3, 0 xC4, 0 xC5, 0 xC6, 0 xC7,
0 xC8, 0 xC9, 0 xCA, 0 xD2, 0 xD3, 0 xD4, 0 xD5, 0 xD6, 0 xD7, 0 xD8,
0 xD9, 0 xDA, 0 xE2, 0 xE3, 0 xE4, 0 xE5, 0 xE6, 0 xE7,
0 xE8, 0 xE9, 0 xEA, 0 xF2, 0 xF3, 0 xF4, 0 xF5, 0 xF6, 0 xF7, 0 xF8,
0 xF9, 0 xFA
};
/* jpeg baseline setup, this is just fixed in this driver (YUV pictures) */
#define NO_OF_COMPONENTS 0 x3 //Y,U,V
#define BASELINE_PRECISION 0 x8 //MCU size (?)
static const char zr36060_tq[8 ] = { 0 , 1 , 1 , 0 , 0 , 0 , 0 , 0 }; //table idx's QT
static const char zr36060_td[8 ] = { 0 , 1 , 1 , 0 , 0 , 0 , 0 , 0 }; //table idx's DC
static const char zr36060_ta[8 ] = { 0 , 1 , 1 , 0 , 0 , 0 , 0 , 0 }; //table idx's AC
/* horizontal 422 decimation setup (maybe we support 411 or so later, too) */
static const char zr36060_decimation_h[8 ] = { 2 , 1 , 1 , 0 , 0 , 0 , 0 , 0 };
static const char zr36060_decimation_v[8 ] = { 1 , 1 , 1 , 0 , 0 , 0 , 0 , 0 };
/*
* SOF ( start of frame ) segment depends on width , height and sampling ratio
* of each color component
*/
static int zr36060_set_sof(struct zr36060 *ptr)
{
struct zoran *zr = videocodec_to_zoran(ptr->codec);
char sof_data[34 ]; // max. size of register set
int i;
zrdev_dbg(zr, "%s: write SOF (%dx%d, %d components)\n" , ptr->name,
ptr->width, ptr->height, NO_OF_COMPONENTS);
sof_data[0 ] = 0 xff;
sof_data[1 ] = 0 xc0;
sof_data[2 ] = 0 x00;
sof_data[3 ] = (3 * NO_OF_COMPONENTS) + 8 ;
sof_data[4 ] = BASELINE_PRECISION; // only '8' possible with zr36060
sof_data[5 ] = (ptr->height) >> 8 ;
sof_data[6 ] = (ptr->height) & 0 xff;
sof_data[7 ] = (ptr->width) >> 8 ;
sof_data[8 ] = (ptr->width) & 0 xff;
sof_data[9 ] = NO_OF_COMPONENTS;
for (i = 0 ; i < NO_OF_COMPONENTS; i++) {
sof_data[10 + (i * 3 )] = i; // index identifier
sof_data[11 + (i * 3 )] = (ptr->h_samp_ratio[i] << 4 ) |
(ptr->v_samp_ratio[i]); // sampling ratios
sof_data[12 + (i * 3 )] = zr36060_tq[i]; // Q table selection
}
return zr36060_pushit(ptr, ZR060_SOF_IDX,
(3 * NO_OF_COMPONENTS) + 10 , sof_data);
}
/* SOS (start of scan) segment depends on the used scan components of each color component */
static int zr36060_set_sos(struct zr36060 *ptr)
{
struct zoran *zr = videocodec_to_zoran(ptr->codec);
char sos_data[16 ]; // max. size of register set
int i;
zrdev_dbg(zr, "%s: write SOS\n" , ptr->name);
sos_data[0 ] = 0 xff;
sos_data[1 ] = 0 xda;
sos_data[2 ] = 0 x00;
sos_data[3 ] = 2 + 1 + (2 * NO_OF_COMPONENTS) + 3 ;
sos_data[4 ] = NO_OF_COMPONENTS;
for (i = 0 ; i < NO_OF_COMPONENTS; i++) {
sos_data[5 + (i * 2 )] = i; // index
sos_data[6 + (i * 2 )] = (zr36060_td[i] << 4 ) |
zr36060_ta[i]; // AC/DC tbl.sel.
}
sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 2 ] = 00 ; // scan start
sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 3 ] = 0 x3f;
sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 4 ] = 00 ;
return zr36060_pushit(ptr, ZR060_SOS_IDX,
4 + 1 + (2 * NO_OF_COMPONENTS) + 3 ,
sos_data);
}
/* DRI (define restart interval) */
static int zr36060_set_dri(struct zr36060 *ptr)
{
struct zoran *zr = videocodec_to_zoran(ptr->codec);
char dri_data[6 ]; // max. size of register set
zrdev_dbg(zr, "%s: write DRI\n" , ptr->name);
dri_data[0 ] = 0 xff;
dri_data[1 ] = 0 xdd;
dri_data[2 ] = 0 x00;
dri_data[3 ] = 0 x04;
dri_data[4 ] = (ptr->dri) >> 8 ;
dri_data[5 ] = (ptr->dri) & 0 xff;
return zr36060_pushit(ptr, ZR060_DRI_IDX, 6 , dri_data);
}
/* Setup compression/decompression of Zoran's JPEG processor ( see also zoran 36060 manual )
* . . . sorry for the spaghetti code . . .
*/
static void zr36060_init(struct zr36060 *ptr)
{
int sum = 0 ;
long bitcnt, tmp;
struct zoran *zr = videocodec_to_zoran(ptr->codec);
if (ptr->mode == CODEC_DO_COMPRESSION) {
zrdev_dbg(zr, "%s: COMPRESSION SETUP\n" , ptr->name);
zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SYNC_RST);
/* 060 communicates with 067 in master mode */
zr36060_write(ptr, ZR060_CIR, ZR060_CIR_CODE_MSTR);
/* Compression with or without variable scale factor */
/*FIXME: What about ptr->bitrate_ctrl? */
zr36060_write(ptr, ZR060_CMR, ZR060_CMR_COMP | ZR060_CMR_PASS2 | ZR060_CMR_BRB);
/* Must be zero */
zr36060_write(ptr, ZR060_MBZ, 0 x00);
zr36060_write(ptr, ZR060_TCR_HI, 0 x00);
zr36060_write(ptr, ZR060_TCR_LO, 0 x00);
/* Disable all IRQs - no DataErr means autoreset */
zr36060_write(ptr, ZR060_IMR, 0 );
/* volume control settings */
zr36060_write(ptr, ZR060_SF_HI, ptr->scalefact >> 8 );
zr36060_write(ptr, ZR060_SF_LO, ptr->scalefact & 0 xff);
zr36060_write(ptr, ZR060_AF_HI, 0 xff);
zr36060_write(ptr, ZR060_AF_M, 0 xff);
zr36060_write(ptr, ZR060_AF_LO, 0 xff);
/* setup the variable jpeg tables */
sum += zr36060_set_sof(ptr);
sum += zr36060_set_sos(ptr);
sum += zr36060_set_dri(ptr);
/* setup the fixed jpeg tables - maybe variable, though - (see table init section above) */
sum += zr36060_pushit(ptr, ZR060_DQT_IDX, sizeof (zr36060_dqt), zr36060_dqt);
sum += zr36060_pushit(ptr, ZR060_DHT_IDX, sizeof (zr36060_dht), zr36060_dht);
zr36060_write(ptr, ZR060_APP_IDX, 0 xff);
zr36060_write(ptr, ZR060_APP_IDX + 1 , 0 xe0 + ptr->app.appn);
zr36060_write(ptr, ZR060_APP_IDX + 2 , 0 x00);
zr36060_write(ptr, ZR060_APP_IDX + 3 , ptr->app.len + 2 );
sum += zr36060_pushit(ptr, ZR060_APP_IDX + 4 , 60 , ptr->app.data) + 4 ;
zr36060_write(ptr, ZR060_COM_IDX, 0 xff);
zr36060_write(ptr, ZR060_COM_IDX + 1 , 0 xfe);
zr36060_write(ptr, ZR060_COM_IDX + 2 , 0 x00);
zr36060_write(ptr, ZR060_COM_IDX + 3 , ptr->com.len + 2 );
sum += zr36060_pushit(ptr, ZR060_COM_IDX + 4 , 60 , ptr->com.data) + 4 ;
/* 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 ;
zrdev_dbg(zr,
"%s: code: csize=%d, tot=%d, bit=%ld, highbits=%ld\n" ,
ptr->name, sum, ptr->real_code_vol, bitcnt, tmp);
zr36060_write(ptr, ZR060_TCV_NET_HI, tmp >> 8 );
zr36060_write(ptr, ZR060_TCV_NET_MH, tmp & 0 xff);
tmp = bitcnt & 0 xffff;
zr36060_write(ptr, ZR060_TCV_NET_ML, tmp >> 8 );
zr36060_write(ptr, ZR060_TCV_NET_LO, tmp & 0 xff);
bitcnt -= bitcnt >> 7 ; // bits without stuffing
bitcnt -= ((bitcnt * 5 ) >> 6 ); // bits without eob
tmp = bitcnt >> 16 ;
zrdev_dbg(zr, "%s: code: nettobit=%ld, highnettobits=%ld\n" ,
ptr->name, bitcnt, tmp);
zr36060_write(ptr, ZR060_TCV_DATA_HI, tmp >> 8 );
zr36060_write(ptr, ZR060_TCV_DATA_MH, tmp & 0 xff);
tmp = bitcnt & 0 xffff;
zr36060_write(ptr, ZR060_TCV_DATA_ML, tmp >> 8 );
zr36060_write(ptr, ZR060_TCV_DATA_LO, tmp & 0 xff);
/* JPEG markers to be included in the compressed stream */
zr36060_write(ptr, ZR060_MER,
ZR060_MER_DQT | ZR060_MER_DHT |
((ptr->com.len > 0 ) ? ZR060_MER_COM : 0 ) |
((ptr->app.len > 0 ) ? ZR060_MER_APP : 0 ));
/* Setup the Video Frontend */
/* Limit pixel range to 16..235 as per CCIR-601 */
zr36060_write(ptr, ZR060_VCR, ZR060_VCR_RANGE);
} else {
zrdev_dbg(zr, "%s: EXPANSION SETUP\n" , ptr->name);
zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SYNC_RST);
/* 060 communicates with 067 in master mode */
zr36060_write(ptr, ZR060_CIR, ZR060_CIR_CODE_MSTR);
/* Decompression */
zr36060_write(ptr, ZR060_CMR, 0 );
/* Must be zero */
zr36060_write(ptr, ZR060_MBZ, 0 x00);
zr36060_write(ptr, ZR060_TCR_HI, 0 x00);
zr36060_write(ptr, ZR060_TCR_LO, 0 x00);
/* Disable all IRQs - no DataErr means autoreset */
zr36060_write(ptr, ZR060_IMR, 0 );
/* setup misc. data for expansion */
zr36060_write(ptr, ZR060_MER, 0 );
/* setup the fixed jpeg tables - maybe variable, though - (see table init section above) */
zr36060_pushit(ptr, ZR060_DHT_IDX, sizeof (zr36060_dht), zr36060_dht);
/* Setup the Video Frontend */
//zr36060_write(ptr, ZR060_VCR, ZR060_VCR_FI_EXT);
//this doesn't seem right and doesn't work...
zr36060_write(ptr, ZR060_VCR, ZR060_VCR_RANGE);
}
/* Load the tables */
zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SYNC_RST | ZR060_LOAD_LOAD);
zr36060_wait_end(ptr);
zrdev_dbg(zr, "%s: Status after table preload: 0x%02x\n" ,
ptr->name, ptr->status);
if (ptr->status & ZR060_CFSR_BUSY) {
zrdev_err(zr, "%s: init aborted!\n" , ptr->name);
return ; // something is wrong, its timed out!!!!
}
}
/* =========================================================================
* CODEC API FUNCTIONS
* this functions are accessed by the master via the API structure
* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
*/
/* set compressiion/expansion mode and launches codec -
* this should be the last call from the master before starting processing
*/
static int zr36060_set_mode(struct videocodec *codec, int mode)
{
struct zr36060 *ptr = (struct zr36060 *)codec->data;
struct zoran *zr = videocodec_to_zoran(codec);
zrdev_dbg(zr, "%s: set_mode %d call\n" , ptr->name, mode);
if (mode != CODEC_DO_EXPANSION && mode != CODEC_DO_COMPRESSION)
return -EINVAL;
ptr->mode = mode;
zr36060_init(ptr);
return 0 ;
}
/* set picture size (norm is ignored as the codec doesn't know about it) */
static int zr36060_set_video(struct videocodec *codec, const struct tvnorm *norm,
struct vfe_settings *cap, struct vfe_polarity *pol)
{
struct zr36060 *ptr = (struct zr36060 *)codec->data;
struct zoran *zr = videocodec_to_zoran(codec);
u32 reg;
int size;
zrdev_dbg(zr, "%s: set_video (%u,%u)/%ux%u (%%%d) call\n" , ptr->name,
cap->x, cap->y, cap->width, cap->height, cap->decimation);
/* 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 & 0 xff);
ptr->height = cap->height / (cap->decimation >> 8 );
zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SYNC_RST);
/* Note that VSPol/HSPol bits in zr36060 have the opposite
* meaning of their zr360x7 counterparts with the same names
* N . b . for VSPol this is only true if FIVEdge = 0 ( default ,
* left unchanged here - in accordance with datasheet ) .
*/
reg = (!pol->vsync_pol ? ZR060_VPR_VS_POL : 0 )
| (!pol->hsync_pol ? ZR060_VPR_HS_POL : 0 )
| (pol->field_pol ? ZR060_VPR_FI_POL : 0 )
| (pol->blank_pol ? ZR060_VPR_BL_POL : 0 )
| (pol->subimg_pol ? ZR060_VPR_S_IMG_POL : 0 )
| (pol->poe_pol ? ZR060_VPR_POE_POL : 0 )
| (pol->pvalid_pol ? ZR060_VPR_P_VAL_POL : 0 )
| (pol->vclk_pol ? ZR060_VPR_VCLK_POL : 0 );
zr36060_write(ptr, ZR060_VPR, reg);
reg = 0 ;
switch (cap->decimation & 0 xff) {
default :
case 1 :
break ;
case 2 :
reg |= ZR060_SR_H_SCALE2;
break ;
case 4 :
reg |= ZR060_SR_H_SCALE4;
break ;
}
switch (cap->decimation >> 8 ) {
default :
case 1 :
break ;
case 2 :
reg |= ZR060_SR_V_SCALE;
break ;
}
zr36060_write(ptr, ZR060_SR, reg);
zr36060_write(ptr, ZR060_BCR_Y, 0 x00);
zr36060_write(ptr, ZR060_BCR_U, 0 x80);
zr36060_write(ptr, ZR060_BCR_V, 0 x80);
/* sync generator */
reg = norm->ht - 1 ; /* Vtotal */
zr36060_write(ptr, ZR060_SGR_VTOTAL_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_SGR_VTOTAL_LO, (reg >> 0 ) & 0 xff);
reg = norm->wt - 1 ; /* Htotal */
zr36060_write(ptr, ZR060_SGR_HTOTAL_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_SGR_HTOTAL_LO, (reg >> 0 ) & 0 xff);
reg = 6 - 1 ; /* VsyncSize */
zr36060_write(ptr, ZR060_SGR_VSYNC, reg);
reg = 68 ;
zr36060_write(ptr, ZR060_SGR_HSYNC, reg);
reg = norm->v_start - 1 ; /* BVstart */
zr36060_write(ptr, ZR060_SGR_BVSTART, reg);
reg += norm->ha / 2 ; /* BVend */
zr36060_write(ptr, ZR060_SGR_BVEND_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_SGR_BVEND_LO, (reg >> 0 ) & 0 xff);
reg = norm->h_start - 1 ; /* BHstart */
zr36060_write(ptr, ZR060_SGR_BHSTART, reg);
reg += norm->wa; /* BHend */
zr36060_write(ptr, ZR060_SGR_BHEND_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_SGR_BHEND_LO, (reg >> 0 ) & 0 xff);
/* active area */
reg = cap->y + norm->v_start; /* Vstart */
zr36060_write(ptr, ZR060_AAR_VSTART_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_AAR_VSTART_LO, (reg >> 0 ) & 0 xff);
reg += cap->height; /* Vend */
zr36060_write(ptr, ZR060_AAR_VEND_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_AAR_VEND_LO, (reg >> 0 ) & 0 xff);
reg = cap->x + norm->h_start; /* Hstart */
zr36060_write(ptr, ZR060_AAR_HSTART_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_AAR_HSTART_LO, (reg >> 0 ) & 0 xff);
reg += cap->width; /* Hend */
zr36060_write(ptr, ZR060_AAR_HEND_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_AAR_HEND_LO, (reg >> 0 ) & 0 xff);
/* subimage area */
reg = norm->v_start - 4 ; /* SVstart */
zr36060_write(ptr, ZR060_SWR_VSTART_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_SWR_VSTART_LO, (reg >> 0 ) & 0 xff);
reg += norm->ha / 2 + 8 ; /* SVend */
zr36060_write(ptr, ZR060_SWR_VEND_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_SWR_VEND_LO, (reg >> 0 ) & 0 xff);
reg = norm->h_start /*+ 64 */ - 4; /* SHstart */
zr36060_write(ptr, ZR060_SWR_HSTART_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_SWR_HSTART_LO, (reg >> 0 ) & 0 xff);
reg += norm->wa + 8 ; /* SHend */
zr36060_write(ptr, ZR060_SWR_HEND_HI, (reg >> 8 ) & 0 xff);
zr36060_write(ptr, ZR060_SWR_HEND_LO, (reg >> 0 ) & 0 xff);
size = ptr->width * ptr->height;
/* Target compressed field size in bits: */
size = size * 16 ; /* uncompressed size in bits */
/* (Ronald) by default, quality = 100 is a compression
* ratio 1 : 2 . Setting low_bitrate ( insmod option ) sets
* it to 1 : 4 ( instead of 1 : 2 , zr36060 max ) as limit because the
* buz can ' t handle more at decimation = 1 . . . Use low_bitrate if
* you have a Buz , unless you know what you ' re doing
*/
size = size * cap->quality / (low_bitrate ? 400 : 200 );
/* Lower limit (arbitrary, 1 KB) */
if (size < 8192 )
size = 8192 ;
/* Upper limit: 7/8 of the code buffers */
if (size > ptr->total_code_vol * 7 )
size = ptr->total_code_vol * 7 ;
ptr->real_code_vol = size >> 3 ; /* in bytes */
/* the MBCVR is the *maximum* block volume, according to the
* JPEG ISO specs , this shouldn ' t be used , since that allows
* for the best encoding quality . So set it to it ' s max value
*/
reg = ptr->max_block_vol;
zr36060_write(ptr, ZR060_MBCVR, reg);
return 0 ;
}
/* additional control functions */
static int zr36060_control(struct videocodec *codec, int type, int size, void *data)
{
struct zr36060 *ptr = (struct zr36060 *)codec->data;
struct zoran *zr = videocodec_to_zoran(codec);
int *ival = (int *)data;
zrdev_dbg(zr, "%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;
zr36060_read_status(ptr);
*ival = ptr->status;
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;
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 = zr36060_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 zr36060_unset(struct videocodec *codec)
{
struct zr36060 *ptr = codec->data;
struct zoran *zr = videocodec_to_zoran(codec);
if (ptr) {
/* do wee need some codec deinit here, too ???? */
zrdev_dbg(zr, "%s: finished codec #%d\n" , ptr->name, ptr->num);
kfree(ptr);
codec->data = NULL;
zr36060_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 zr36060_setup(struct videocodec *codec)
{
struct zr36060 *ptr;
struct zoran *zr = videocodec_to_zoran(codec);
int res;
zrdev_dbg(zr, "zr36060: initializing MJPEG subsystem #%d.\n" ,
zr36060_codecs);
if (zr36060_codecs == MAX_CODECS) {
zrdev_err(zr, "zr36060: Can't attach more codecs!\n" );
return -ENOSPC;
}
//mem structure init
ptr = kzalloc(sizeof (*ptr), GFP_KERNEL);
codec->data = ptr;
if (!ptr)
return -ENOMEM;
snprintf(ptr->name, sizeof (ptr->name), "zr36060[%d]" , zr36060_codecs);
ptr->num = zr36060_codecs++;
ptr->codec = codec;
//testing
res = zr36060_basic_test(ptr);
if (res < 0 ) {
zr36060_unset(codec);
return res;
}
//final setup
memcpy(ptr->h_samp_ratio, zr36060_decimation_h, 8 );
memcpy(ptr->v_samp_ratio, zr36060_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 ; /* CHECKME */
ptr->real_code_vol = (ptr->total_code_vol * 6 ) >> 3 ;
ptr->max_block_vol = 240 ; /* CHECKME, was 120 is 240 */
ptr->scalefact = 0 x100;
ptr->dri = 1 ; /* CHECKME, was 8 is 1 */
/* by default, no COM or APP markers - app should set those */
ptr->com.len = 0 ;
ptr->app.appn = 0 ;
ptr->app.len = 0 ;
zr36060_init(ptr);
zrdev_info(zr, "%s: codec attached and running\n" , ptr->name);
return 0 ;
}
static const struct videocodec zr36060_codec = {
.name = "zr36060" ,
.magic = 0 L, // magic not used
.flags =
CODEC_FLAG_JPEG | CODEC_FLAG_HARDWARE | CODEC_FLAG_ENCODER |
CODEC_FLAG_DECODER | CODEC_FLAG_VFE,
.type = CODEC_TYPE_ZR36060,
.setup = zr36060_setup, // functionality
.unset = zr36060_unset,
.set_mode = zr36060_set_mode,
.set_video = zr36060_set_video,
.control = zr36060_control,
// others are not used
};
int zr36060_init_module(void )
{
zr36060_codecs = 0 ;
return videocodec_register(&zr36060_codec);
}
void zr36060_cleanup_module(void )
{
if (zr36060_codecs) {
pr_debug("zr36060: something's wrong - %d codecs left somehow.\n" ,
zr36060_codecs);
}
/* however, we can't just stay alive */
videocodec_unregister(&zr36060_codec);
}
Messung V0.5 in Prozent C=95 H=94 G=94
¤ Dauer der Verarbeitung: 0.15 Sekunden
(vorverarbeitet am 2026-10-11)
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