--- /dev/null
+/*
+ * Zoran ZR36060 basic configuration functions
+ *
+ * Copyright (C) 2002 Laurent Pinchart <laurent.pinchart@skynet.be>
+ *
+ * $Id: zr36060.c,v 1.1.2.22 2003/05/06 09:35:36 rbultje Exp $
+ *
+ * ------------------------------------------------------------------------
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * ------------------------------------------------------------------------
+ */
+
+#define ZR060_VERSION "v0.7"
+
+#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 <asm/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");
+
+/* 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
+zr36060_read (struct zr36060 *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
+zr36060_write(struct zr36060 *ptr,
+ u16 reg,
+ u8 value)
+{
+ //dprintk(4, "%s: writing 0x%02x to 0x%04x\n",ptr->name,value,reg);
+ dprintk(4, "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
+ 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
+zr36060_read_status (struct zr36060 *ptr)
+{
+ ptr->status = zr36060_read(ptr, ZR060_CFSR);
+
+ zr36060_read(ptr, 0);
+ return ptr->status;
+}
+
+/* =========================================================================
+ Local helper function:
+
+ scale factor read
+ ========================================================================= */
+
+/* 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) & 0xFF);
+
+ /* leave 0 selected for an eventually GO from master */
+ zr36060_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
+zr36060_wait_end (struct zr36060 *ptr)
+{
+ int i = 0;
+
+ while (zr36060_read_status(ptr) & ZR060_CFSR_Busy) {
+ 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->status);
+ break;
+ }
+ }
+}
+
+/* =========================================================================
+ Local helper function:
+
+ basic test of "connectivity", writes/reads to/from memory the SOF marker
+ ========================================================================= */
+
+static int
+zr36060_basic_test (struct zr36060 *ptr)
+{
+ if ((zr36060_read(ptr, ZR060_IDR_DEV) != 0x33) &&
+ (zr36060_read(ptr, ZR060_IDR_REV) != 0x01)) {
+ dprintk(1,
+ KERN_ERR
+ "%s: attach failed, can't connect to jpeg processor!\n",
+ ptr->name);
+ return -ENXIO;
+ }
+
+ zr36060_wait_end(ptr);
+ if (ptr->status & ZR060_CFSR_Busy) {
+ 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
+zr36060_pushit (struct zr36060 *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) {
+ 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[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 zr36060_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 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 };
+
+/* =========================================================================
+ 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
+zr36060_set_sof (struct zr36060 *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 zr36060
+ 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)] = 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)
+{
+ 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)] = (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] = 0x3f;
+ 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)
+{
+ 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 zr36060_pushit(ptr, ZR060_DRI_IDX, 6, dri_data);
+}
+
+/* =========================================================================
+ Setup function:
+
+ 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;
+
+ if (ptr->mode == CODEC_DO_COMPRESSION) {
+ dprintk(2, "%s: COMPRESSION SETUP\n", ptr->name);
+
+ zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SyncRst);
+
+ /* 060 communicates with 067 in master mode */
+ zr36060_write(ptr, ZR060_CIR, ZR060_CIR_CodeMstr);
+
+ /* 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, 0x00);
+ zr36060_write(ptr, ZR060_TCR_HI, 0x00);
+ zr36060_write(ptr, ZR060_TCR_LO, 0x00);
+
+ /* 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 & 0xff);
+
+ zr36060_write(ptr, ZR060_AF_HI, 0xff);
+ zr36060_write(ptr, ZR060_AF_M, 0xff);
+ zr36060_write(ptr, ZR060_AF_LO, 0xff);
+
+ /* 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, 0xff);
+ zr36060_write(ptr, ZR060_APP_IDX + 1, 0xe0 + ptr->app.appn);
+ zr36060_write(ptr, ZR060_APP_IDX + 2, 0x00);
+ 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, 0xff);
+ zr36060_write(ptr, ZR060_COM_IDX + 1, 0xfe);
+ zr36060_write(ptr, ZR060_COM_IDX + 2, 0x00);
+ 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;
+ dprintk(3,
+ "%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 & 0xff);
+ tmp = bitcnt & 0xffff;
+ zr36060_write(ptr, ZR060_TCV_NET_ML, tmp >> 8);
+ zr36060_write(ptr, ZR060_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);
+ zr36060_write(ptr, ZR060_TCV_DATA_HI, tmp >> 8);
+ zr36060_write(ptr, ZR060_TCV_DATA_MH, tmp & 0xff);
+ tmp = bitcnt & 0xffff;
+ zr36060_write(ptr, ZR060_TCV_DATA_ML, tmp >> 8);
+ zr36060_write(ptr, ZR060_TCV_DATA_LO, tmp & 0xff);
+
+ /* 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 {
+ dprintk(2, "%s: EXPANSION SETUP\n", ptr->name);
+
+ zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SyncRst);
+
+ /* 060 communicates with 067 in master mode */
+ zr36060_write(ptr, ZR060_CIR, ZR060_CIR_CodeMstr);
+
+ /* Decompression */
+ zr36060_write(ptr, ZR060_CMR, 0);
+
+ /* Must be zero */
+ zr36060_write(ptr, ZR060_MBZ, 0x00);
+ zr36060_write(ptr, ZR060_TCR_HI, 0x00);
+ zr36060_write(ptr, ZR060_TCR_LO, 0x00);
+
+ /* 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_FIExt);
+ //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_SyncRst | ZR060_LOAD_Load);
+ zr36060_wait_end(ptr);
+ dprintk(2, "%s: Status after table preload: 0x%02x\n", ptr->name,
+ ptr->status);
+
+ if (ptr->status & ZR060_CFSR_Busy) {
+ dprintk(1, KERN_ERR "%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 compression/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;
+
+ 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;
+ 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,
+ struct tvnorm *norm,
+ struct vfe_settings *cap,
+ struct vfe_polarity *pol)
+{
+ struct zr36060 *ptr = (struct zr36060 *) codec->data;
+ u32 reg;
+ int size;
+
+ dprintk(2, "%s: set_video %d/%d-%dx%d (%%%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 & 0xff);
+ ptr->height = cap->height / (cap->decimation >> 8);
+
+ zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SyncRst);
+
+ /* 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_VSPol : 0)
+ | (!pol->hsync_pol ? ZR060_VPR_HSPol : 0)
+ | (pol->field_pol ? ZR060_VPR_FIPol : 0)
+ | (pol->blank_pol ? ZR060_VPR_BLPol : 0)
+ | (pol->subimg_pol ? ZR060_VPR_SImgPol : 0)
+ | (pol->poe_pol ? ZR060_VPR_PoePol : 0)
+ | (pol->pvalid_pol ? ZR060_VPR_PValPol : 0)
+ | (pol->vclk_pol ? ZR060_VPR_VCLKPol : 0);
+ zr36060_write(ptr, ZR060_VPR, reg);
+
+ reg = 0;
+ switch (cap->decimation & 0xff) {
+ default:
+ case 1:
+ break;
+
+ case 2:
+ reg |= ZR060_SR_HScale2;
+ break;
+
+ case 4:
+ reg |= ZR060_SR_HScale4;
+ break;
+ }
+
+ switch (cap->decimation >> 8) {
+ default:
+ case 1:
+ break;
+
+ case 2:
+ reg |= ZR060_SR_VScale;
+ break;
+ }
+ zr36060_write(ptr, ZR060_SR, reg);
+
+ zr36060_write(ptr, ZR060_BCR_Y, 0x00);
+ zr36060_write(ptr, ZR060_BCR_U, 0x80);
+ zr36060_write(ptr, ZR060_BCR_V, 0x80);
+
+ /* sync generator */
+
+ reg = norm->Ht - 1; /* Vtotal */
+ zr36060_write(ptr, ZR060_SGR_VTOTAL_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SGR_VTOTAL_LO, (reg >> 0) & 0xff);
+
+ reg = norm->Wt - 1; /* Htotal */
+ zr36060_write(ptr, ZR060_SGR_HTOTAL_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SGR_HTOTAL_LO, (reg >> 0) & 0xff);
+
+ reg = 6 - 1; /* VsyncSize */
+ zr36060_write(ptr, ZR060_SGR_VSYNC, reg);
+
+ //reg = 30 - 1; /* HsyncSize */
+///*CP*/ reg = (zr->params.norm == 1 ? 57 : 68);
+ reg = 68;
+ zr36060_write(ptr, ZR060_SGR_HSYNC, reg);
+
+ reg = norm->VStart - 1; /* BVstart */
+ zr36060_write(ptr, ZR060_SGR_BVSTART, reg);
+
+ reg += norm->Ha / 2; /* BVend */
+ zr36060_write(ptr, ZR060_SGR_BVEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SGR_BVEND_LO, (reg >> 0) & 0xff);
+
+ reg = norm->HStart - 1; /* BHstart */
+ zr36060_write(ptr, ZR060_SGR_BHSTART, reg);
+
+ reg += norm->Wa; /* BHend */
+ zr36060_write(ptr, ZR060_SGR_BHEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SGR_BHEND_LO, (reg >> 0) & 0xff);
+
+ /* active area */
+ reg = cap->y + norm->VStart; /* Vstart */
+ zr36060_write(ptr, ZR060_AAR_VSTART_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_AAR_VSTART_LO, (reg >> 0) & 0xff);
+
+ reg += cap->height; /* Vend */
+ zr36060_write(ptr, ZR060_AAR_VEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_AAR_VEND_LO, (reg >> 0) & 0xff);
+
+ reg = cap->x + norm->HStart; /* Hstart */
+ zr36060_write(ptr, ZR060_AAR_HSTART_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_AAR_HSTART_LO, (reg >> 0) & 0xff);
+
+ reg += cap->width; /* Hend */
+ zr36060_write(ptr, ZR060_AAR_HEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_AAR_HEND_LO, (reg >> 0) & 0xff);
+
+ /* subimage area */
+ reg = norm->VStart - 4; /* SVstart */
+ zr36060_write(ptr, ZR060_SWR_VSTART_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SWR_VSTART_LO, (reg >> 0) & 0xff);
+
+ reg += norm->Ha / 2 + 8; /* SVend */
+ zr36060_write(ptr, ZR060_SWR_VEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SWR_VEND_LO, (reg >> 0) & 0xff);
+
+ reg = norm->HStart /*+ 64 */ - 4; /* SHstart */
+ zr36060_write(ptr, ZR060_SWR_HSTART_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SWR_HSTART_LO, (reg >> 0) & 0xff);
+
+ reg += norm->Wa + 8; /* SHend */
+ zr36060_write(ptr, ZR060_SWR_HEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SWR_HEND_LO, (reg >> 0) & 0xff);
+
+ 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;
+ 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;
+ 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;
+
+ 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;
+
+ 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;
+ int res;
+
+ dprintk(2, "zr36060: initializing MJPEG subsystem #%d.\n",
+ zr36060_codecs);
+
+ if (zr36060_codecs == MAX_CODECS) {
+ dprintk(1,
+ KERN_ERR "zr36060: Can't attach more codecs!\n");
+ return -ENOSPC;
+ }
+ //mem structure init
+ codec->data = ptr = kzalloc(sizeof(struct zr36060), GFP_KERNEL);
+ if (NULL == ptr) {
+ dprintk(1, KERN_ERR "zr36060: Can't get enough memory!\n");
+ 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 = 0x100;
+ 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);
+
+ dprintk(1, KERN_INFO "%s: codec attached and running\n",
+ ptr->name);
+
+ return 0;
+}
+
+static const struct videocodec zr36060_codec = {
+ .owner = THIS_MODULE,
+ .name = "zr36060",
+ .magic = 0L, // 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
+};
+
+/* =========================================================================
+ HOOK IN DRIVER AS KERNEL MODULE
+ ========================================================================= */
+
+static int __init
+zr36060_init_module (void)
+{
+ //dprintk(1, "zr36060 driver %s\n",ZR060_VERSION);
+ zr36060_codecs = 0;
+ return videocodec_register(&zr36060_codec);
+}
+
+static void __exit
+zr36060_cleanup_module (void)
+{
+ if (zr36060_codecs) {
+ dprintk(1,
+ "zr36060: something's wrong - %d codecs left somehow.\n",
+ zr36060_codecs);
+ }
+
+ /* however, we can't just stay alive */
+ videocodec_unregister(&zr36060_codec);
+}
+
+module_init(zr36060_init_module);
+module_exit(zr36060_cleanup_module);
+
+MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@skynet.be>");
+MODULE_DESCRIPTION("Driver module for ZR36060 jpeg processors "
+ ZR060_VERSION);
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff