diff options
Diffstat (limited to 'drivers/staging/media/zoran/zr36050.c')
| -rw-r--r-- | drivers/staging/media/zoran/zr36050.c | 843 |
1 files changed, 0 insertions, 843 deletions
diff --git a/drivers/staging/media/zoran/zr36050.c b/drivers/staging/media/zoran/zr36050.c deleted file mode 100644 index c62af27f2683..000000000000 --- a/drivers/staging/media/zoran/zr36050.c +++ /dev/null @@ -1,843 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Zoran ZR36050 basic configuration functions - * - * Copyright (C) 2001 Wolfgang Scherr <scherr@net4you.at> - */ - -#define ZR050_VERSION "v0.7.1" - -#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 "zr36050.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 zr36050_codecs; - -/* debugging is available via module parameter */ -static int debug; -module_param(debug, int, 0); -MODULE_PARM_DESC(debug, "Debug level (0-4)"); - -#define dprintk(num, format, args...) \ - do { \ - if (debug >= num) \ - printk(format, ##args); \ - } while (0) - -/* ========================================================================= - Local hardware I/O functions: - - read/write via codec layer (registers are located in the master device) - ========================================================================= */ - -/* read and write functions */ -static u8 zr36050_read(struct zr36050 *ptr, u16 reg) -{ - u8 value = 0; - - /* just in case something is wrong... */ - if (ptr->codec->master_data->readreg) - value = (ptr->codec->master_data->readreg(ptr->codec, reg)) & 0xFF; - else - dprintk(1, - KERN_ERR "%s: invalid I/O setup, nothing read!\n", ptr->name); - - dprintk(4, "%s: reading from 0x%04x: %02x\n", ptr->name, reg, value); - - return value; -} - -static void zr36050_write(struct zr36050 *ptr, u16 reg, u8 value) -{ - dprintk(4, "%s: writing 0x%02x to 0x%04x\n", ptr->name, value, reg); - - /* just in case something is wrong... */ - if (ptr->codec->master_data->writereg) - ptr->codec->master_data->writereg(ptr->codec, reg, value); - else - dprintk(1, - KERN_ERR - "%s: invalid I/O setup, nothing written!\n", - ptr->name); -} - -/* ========================================================================= - Local helper function: - - status read - ========================================================================= */ - -/* status is kept in datastructure */ -static u8 zr36050_read_status1(struct zr36050 *ptr) -{ - ptr->status1 = zr36050_read(ptr, ZR050_STATUS_1); - - zr36050_read(ptr, 0); - return ptr->status1; -} - -/* ========================================================================= - Local helper function: - - scale factor read - ========================================================================= */ - -/* scale factor is kept in datastructure */ -static u16 zr36050_read_scalefactor(struct zr36050 *ptr) -{ - ptr->scalefact = (zr36050_read(ptr, ZR050_SF_HI) << 8) | - (zr36050_read(ptr, ZR050_SF_LO) & 0xFF); - - /* leave 0 selected for an eventually GO from master */ - zr36050_read(ptr, 0); - return ptr->scalefact; -} - -/* ========================================================================= - Local helper function: - - wait if codec is ready to proceed (end of processing) or time is over - ========================================================================= */ - -static void zr36050_wait_end(struct zr36050 *ptr) -{ - int i = 0; - - while (!(zr36050_read_status1(ptr) & 0x4)) { - udelay(1); - if (i++ > 200000) { // 200ms, there is for sure something wrong!!! - dprintk(1, - "%s: timeout at wait_end (last status: 0x%02x)\n", - ptr->name, ptr->status1); - break; - } - } -} - -/* ========================================================================= - Local helper function: - - basic test of "connectivity", writes/reads to/from memory the SOF marker - ========================================================================= */ - -static int zr36050_basic_test(struct zr36050 *ptr) -{ - zr36050_write(ptr, ZR050_SOF_IDX, 0x00); - zr36050_write(ptr, ZR050_SOF_IDX + 1, 0x00); - if ((zr36050_read(ptr, ZR050_SOF_IDX) | - zr36050_read(ptr, ZR050_SOF_IDX + 1)) != 0x0000) { - dprintk(1, - KERN_ERR - "%s: attach failed, can't connect to jpeg processor!\n", - ptr->name); - return -ENXIO; - } - zr36050_write(ptr, ZR050_SOF_IDX, 0xff); - zr36050_write(ptr, ZR050_SOF_IDX + 1, 0xc0); - if (((zr36050_read(ptr, ZR050_SOF_IDX) << 8) | - zr36050_read(ptr, ZR050_SOF_IDX + 1)) != 0xffc0) { - dprintk(1, - KERN_ERR - "%s: attach failed, can't connect to jpeg processor!\n", - ptr->name); - return -ENXIO; - } - - zr36050_wait_end(ptr); - if ((ptr->status1 & 0x4) == 0) { - dprintk(1, - KERN_ERR - "%s: attach failed, jpeg processor failed (end flag)!\n", - ptr->name); - return -EBUSY; - } - - return 0; /* looks good! */ -} - -/* ========================================================================= - Local helper function: - - simple loop for pushing the init datasets - ========================================================================= */ - -static int zr36050_pushit(struct zr36050 *ptr, u16 startreg, u16 len, const char *data) -{ - int i = 0; - - dprintk(4, "%s: write data block to 0x%04x (len=%d)\n", ptr->name, - startreg, len); - while (i < len) - zr36050_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 zr36050 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 zr36050_dqt[0x86] = { - 0xff, 0xdb, //Marker: DQT - 0x00, 0x84, //Length: 2*65+2 - 0x00, //Pq,Tq first table - 0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e, - 0x0d, 0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28, - 0x1a, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25, - 0x1d, 0x28, 0x3a, 0x33, 0x3d, 0x3c, 0x39, 0x33, - 0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40, 0x44, - 0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0x51, 0x57, - 0x5f, 0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71, - 0x79, 0x70, 0x64, 0x78, 0x5c, 0x65, 0x67, 0x63, - 0x01, //Pq,Tq second table - 0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2f, 0x1a, - 0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63, - 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, - 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, - 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, - 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, - 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, - 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63 -}; - -static const char zr36050_dht[0x1a4] = { - 0xff, 0xc4, //Marker: DHT - 0x01, 0xa2, //Length: 2*AC, 2*DC - 0x00, //DC first table - 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, - 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, - 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, - 0x01, //DC second table - 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, - 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, - 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, - 0x10, //AC first table - 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, - 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, - 0x01, 0x7D, 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, - 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, - 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1, - 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24, - 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, - 0x18, 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, - 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, - 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, - 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, - 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, - 0x79, 0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, - 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, - 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, - 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, - 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, - 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, - 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, - 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, - 0xF8, 0xF9, 0xFA, - 0x11, //AC second table - 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, - 0x07, 0x05, 0x04, 0x04, 0x00, 0x01, - 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, - 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, - 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, - 0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, - 0x72, 0xD1, 0x0A, 0x16, 0x24, 0x34, 0xE1, 0x25, - 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A, - 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, - 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, - 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, - 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, - 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, - 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, - 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, - 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, - 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, - 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, - 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, - 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, - 0xF9, 0xFA -}; - -/* jpeg baseline setup, this is just fixed in this driver (YUV pictures) */ -#define NO_OF_COMPONENTS 0x3 //Y,U,V -#define BASELINE_PRECISION 0x8 //MCU size (?) -static const char zr36050_tq[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; //table idx's QT -static const char zr36050_td[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; //table idx's DC -static const char zr36050_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 zr36050_decimation_h[8] = { 2, 1, 1, 0, 0, 0, 0, 0 }; -static const char zr36050_decimation_v[8] = { 1, 1, 1, 0, 0, 0, 0, 0 }; - -/* ========================================================================= - Local helper functions: - - calculation and setup of parameter-dependent JPEG baseline segments - (needed for compression only) - ========================================================================= */ - -/* ------------------------------------------------------------------------- */ - -/* SOF (start of frame) segment depends on width, height and sampling ratio - of each color component */ - -static int zr36050_set_sof(struct zr36050 *ptr) -{ - char sof_data[34]; // max. size of register set - int i; - - dprintk(3, "%s: write SOF (%dx%d, %d components)\n", ptr->name, - ptr->width, ptr->height, NO_OF_COMPONENTS); - sof_data[0] = 0xff; - sof_data[1] = 0xc0; - sof_data[2] = 0x00; - sof_data[3] = (3 * NO_OF_COMPONENTS) + 8; - sof_data[4] = BASELINE_PRECISION; // only '8' possible with zr36050 - sof_data[5] = (ptr->height) >> 8; - sof_data[6] = (ptr->height) & 0xff; - sof_data[7] = (ptr->width) >> 8; - sof_data[8] = (ptr->width) & 0xff; - 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)] = zr36050_tq[i]; // Q table selection - } - return zr36050_pushit(ptr, ZR050_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 zr36050_set_sos(struct zr36050 *ptr) -{ - char sos_data[16]; // max. size of register set - int i; - - dprintk(3, "%s: write SOS\n", ptr->name); - sos_data[0] = 0xff; - sos_data[1] = 0xda; - sos_data[2] = 0x00; - 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)] = (zr36050_td[i] << 4) | zr36050_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] = 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) { - pr_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) { - pr_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, const 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->h_start, norm->v_start, - 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 - ptr = kzalloc(sizeof(*ptr), GFP_KERNEL); - codec->data = ptr; - if (!ptr) - 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"); |