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76bbbceeb1c80e68c8e4e0899bd5eee5be4dcdf9
lcdproc/server/drivers/stv5730.c
T
marschap 6a1511bb72 * coding style harmonization in servers/ 
- explicitely declare void arguments
  - make a few string args const
* better support for shorter displays in server screen
* make target to create top level tag file
2007-04-02 21:29:53 +00:00

644 lines
18 KiB
C
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//////////////////////////////////////////////////////////////////////////
// This is a driver for the STV5730A on-screen display chip in con- //
// junction with a parallel port interface. Check //
// http://www.usblcd.de/lcdproc/ for where to buy iand how to build //
// the hardware. //
// The STV3730 displays 11 rows with 28 characters. The characters are //
// fixed and can not be reprogrammed. Luckily the chraracter set con- //
// tains a heartbeat icon and some characters that can be used as //
// hbars / vbars. //
// //
// Moved the delay timing code by Charles Steinkuehler to timing.h. //
// Guillaume Filion <gfk@logidac.com>, December 2001 //
// //
// (C) 2001 Robin Adams ( robin@adams-online.de ) //
// //
// This driver is released under the GPL. See file COPYING in this //
// package for further details. //
//////////////////////////////////////////////////////////////////////////
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#include <string.h>
#include <sys/errno.h>
//#include <sys/io.h>
#include <time.h>
#include "port.h"
#include "timing.h"
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "shared/str.h"
#include "lcd.h"
#include "stv5730.h"
#include "report.h"
#ifndef LPTPORT
#define LPTPORT 0x378
#endif
#define STV5730_TEST_O 0x01
#define STV5730_BAR 0x02
#define STV5730_CLK 0x04
#define STV5730_CSN 0x08
#define STV5730_DATA 0x10
#define STV5730_TEST_I 0x40
#define STV5730_MUTE 0x80
// If it doesn't work try increasing this value
#define IODELAY 400
// Change that to NTSC if you are from the US...
#define PAL
#define STV5730_HGT 11
#define STV5730_WID 28
#define STV5730_ATTRIB 0x800
#define STV5730_REG_ZOOM 0xCC
#define STV5730_REG_COLOR 0xCD
#define STV5730_REG_CONTROL 0xCE
#define STV5730_REG_POSITION 0xCF
#define STV5730_REG_MODE 0xD0
// Choose Colors: FLINE: First line text color, TEXT: Text color, CBACK: Character Background Color
// CBORD: Character Border Color, SBACK: Screen Background color
// 0:Black, 1: Blue, 2:Green, 3: Cyan, 4: Red, 5: Magenta, 6: Yellow, 7: White
#define STV5730_COL_FLINE 4
#define STV5730_COL_TEXT 1
#define STV5730_COL_CBACK 3
#define STV5730_COL_CBORD 0
#define STV5730_COL_SBACK 2
typedef struct driver_private_data {
unsigned int port;
unsigned int charattrib;
unsigned int flags;
char *framebuf;
} PrivateData;
// Vars for the server core
MODULE_EXPORT char *api_version = API_VERSION;
MODULE_EXPORT int stay_in_foreground = 0;
MODULE_EXPORT int supports_multiple = 0;
MODULE_EXPORT char *symbol_prefix = "stv5730_";
// Translation map ascii->stv5730 charset
unsigned char stv5730_to_ascii[256] =
{ 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x27, 0x0B, 0x27, 0x28,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x26, 0x26,
0x62, 0x78, 0x61, 0x70,
0x6c, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
0x17, 0x18, 0x19, 0x1A,
0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x0B,
0x0B, 0x0B, 0x0B, 0x72,
0x0B, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34,
0x35, 0x36, 0x37, 0x38,
0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x40, 0x41, 0x42, 0x43, 0x6E,
0x6C, 0x71, 0x79, 0x7F,
0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0B, 0x0B, 0x77
};
//static void stv5730_upause(int delayCalls);
#define stv5730_upause timing_uPause
/////////////////////////////////////////////////////////////////
// This function returns true if a powered and working STV5730
// hardware is present at p->port
static int
stv5730_detect (unsigned int port)
{
int i;
for (i = 0; i < 10; i++) {
port_out(port, STV5730_TEST_O);
stv5730_upause(IODELAY);
if ((port_in(port + 1) & STV5730_TEST_I) == 0)
return -1;
port_out(port, 0);
stv5730_upause(IODELAY);
if ((port_in(port + 1) & STV5730_TEST_I) != 0)
return -1;
}
return 0;
}
/////////////////////////////////////////////////////////////////
// returns 0 if a valid video signal is connected to the video
// input
static int
stv5730_is_mute (unsigned int port)
{
stv5730_upause(IODELAY);
return ((port_in(port + 1) & STV5730_MUTE) ? 0 : 1);
}
/////////////////////////////////////////////////////////////////
// stv5730_write16bit, stv5730_write8bit, stv5730_write0bit
// this family of functions write commands or data to the stv5730
// 8 bit writes repeat the high byte, 0 byte writes repeat the last
// written word
static void
stv5730_write16bit (unsigned int port, unsigned int flags, unsigned int value)
{
int i;
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + flags);
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + STV5730_CLK + flags);
stv5730_upause(IODELAY);
port_out(port, STV5730_CLK + flags);
for (i = 15; i >= 0; i--) {
char databit = ((value & (1 << i)) != 0) ? STV5730_DATA : 0;
port_out(port, databit + STV5730_CLK + flags);
stv5730_upause(IODELAY);
port_out(port, databit + flags);
stv5730_upause(IODELAY);
port_out(port, databit + STV5730_CLK + flags);
stv5730_upause(IODELAY);
}
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + STV5730_CLK + flags);
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + flags);
stv5730_upause(IODELAY);
}
static void
stv5730_write8bit (unsigned int port, unsigned int flags, unsigned int value)
{
int i;
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + flags);
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + STV5730_CLK + flags);
stv5730_upause(IODELAY);
port_out(port, STV5730_CLK + flags);
for (i = 7; i >= 0; i--) {
char databit = ((value & (1 << i)) != 0) ? STV5730_DATA : 0;
port_out(port, databit + STV5730_CLK + flags);
stv5730_upause(IODELAY);
port_out(port, databit + flags);
stv5730_upause(IODELAY);
port_out(port, databit + STV5730_CLK + flags);
stv5730_upause(IODELAY);
}
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + STV5730_CLK + flags);
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + flags);
}
static void
stv5730_write0bit (unsigned int port, unsigned int flags)
{
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + flags);
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + STV5730_CLK + flags);
stv5730_upause(IODELAY);
port_out(port, STV5730_CLK + flags);
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + STV5730_CLK + flags);
stv5730_upause(IODELAY);
port_out(port, STV5730_CSN + flags);
}
/////////////////////////////////////////////////////////////////
// sets the memory pointer inside the stv5730 to the position
// row, col.
static void
stv5730_locate (unsigned int port, unsigned int flags, int row, int col)
{
if (row < 0 || row >= STV5730_HGT || col < 0 || col >= STV5730_WID)
return;
stv5730_write16bit(port, flags, (row << 8) + col);
}
/////////////////////////////////////////////////////////////////
// draws char z from fontmap to the framebuffer at position
// x,y. These are zero-based textmode positions.
// We need a conversion map to translate from ascii to the
// non-standard STV5730 charset.
//
static void
stv5730_drawchar2fb (Driver *drvthis, int x, int y, unsigned char z)
{
PrivateData *p = drvthis->private_data;
if ((x >= 0) && (x < STV5730_WID) && (y >= 0) && (y < STV5730_HGT))
p->framebuf[(y * STV5730_WID) + x] = stv5730_to_ascii[(unsigned int) z];
}
/////////////////////////////////////////////////////////////////
// This initialises the stuff. We support supplying port as
// a command line argument.
//
MODULE_EXPORT int
stv5730_init (Driver *drvthis)
{
PrivateData *p;
int i;
/* Allocate and store private data */
p = (PrivateData *) calloc(1, sizeof(PrivateData));
if (p == NULL)
return -1;
if (drvthis->store_private_ptr(drvthis, p))
return -1;
/* initialize private data */
p->port = LPTPORT;
p->charattrib = STV5730_ATTRIB;
p->flags = 0;
p->framebuf = NULL;
/* Read config file */
/* What port to use */
p->port = drvthis->config_get_int(drvthis->name, "Port", 0, LPTPORT);
/* End of config file parsing */
if (timing_init() == -1) {
report(RPT_ERR, "%s: timing_init() failed (%s)", drvthis->name, strerror(errno));
return -1;
}
// Initialize the Port and the stv5730
if (port_access(p->port) || port_access(p->port + 1)) {
report(RPT_ERR,
"%s: cannot get IO-permission for 0x%03X! Are we running as root?",
drvthis->name, p->port);
return -1;
}
if (stv5730_detect(p->port)) {
report(RPT_ERR, "%s: no STV5730 hardware found at 0x%03X ",
drvthis->name, p->port);
return -1;
}
port_out(p->port, 0);
// Reset the STV5730
stv5730_write16bit(p->port, p->flags, 0x3000);
stv5730_write16bit(p->port, p->flags, 0x3000);
stv5730_write16bit(p->port, p->flags, 0x00db);
stv5730_write16bit(p->port, p->flags, 0x1000);
// Setup Mode + Control Register for video detection
stv5730_write16bit(p->port, p->flags, STV5730_REG_MODE);
stv5730_write16bit(p->port, p->flags, 0x1576);
stv5730_write16bit(p->port, p->flags, STV5730_REG_CONTROL);
stv5730_write16bit(p->port, p->flags, 0x1FF4);
report(RPT_INFO, "%s: detecting video signal: ", drvthis->name);
usleep (50000);
if (stv5730_is_mute(p->port)) {
report(RPT_INFO, "%s: no video signal found; using full page mode", drvthis->name);
// Setup Mode + Control for full page mode
p->charattrib = STV5730_ATTRIB;
stv5730_write16bit(p->port, p->flags, STV5730_REG_MODE);
stv5730_write16bit(p->port, p->flags, 0x15A6);
stv5730_write16bit(p->port, p->flags, STV5730_REG_CONTROL);
#ifdef PAL
stv5730_write16bit(p->port, p->flags, 0x1FD5);
#endif
#ifdef NTSC
stv5730_write16bit(p->port, p->flags, 0x1ED4);
#endif
}
else {
report(RPT_INFO, "%s: video signal found, using mixed mode (B&W)", drvthis->name);
// Setup Mode + Control for mixed mode, disable color
p->charattrib = 0;
stv5730_write16bit(p->port, p->flags, STV5730_REG_MODE);
stv5730_write16bit(p->port, p->flags, 0x1576);
stv5730_write16bit(p->port, p->flags, STV5730_REG_CONTROL);
#ifdef PAL
stv5730_write16bit(p->port, p->flags, 0x1DD4);
#endif
#ifdef NTSC
stv5730_write16bit(p->port, p->flags, 0x1CF4);
#endif
}
// Position Register
stv5730_write16bit(p->port, p->flags, STV5730_REG_POSITION);
stv5730_write16bit(p->port, p->flags, 0x1000 + 64 * 30 + 30);
// Color Register
stv5730_write16bit(p->port, p->flags, STV5730_REG_COLOR);
stv5730_write16bit(p->port, p->flags, 0x1000 + (STV5730_COL_SBACK << 9) +
(STV5730_COL_CBORD << 6) + STV5730_COL_CBACK);
// Zoom Register: Zoom first line
stv5730_write16bit(p->port, p->flags, STV5730_REG_ZOOM);
stv5730_write16bit(p->port, p->flags, 0x1000 + 4);
// Set the Row Attributes
for (i = 0; i <= 10; i++) {
stv5730_write16bit(p->port, p->flags, 0x00C0 + i);
stv5730_write16bit(p->port, p->flags, 0x10C0);
}
// Allocate our own framebuffer
p->framebuf = malloc(STV5730_WID * STV5730_HGT);
if (p->framebuf == NULL) {
report(RPT_ERR, "%s: unable to allocate framebuffer", drvthis->name);
stv5730_close(drvthis);
return -1;
}
// clear screen
memset(p->framebuf, 0, STV5730_WID * STV5730_HGT);
report(RPT_DEBUG, "%s: init() done", drvthis->name);
return 1;
}
/////////////////////////////////////////////////////////////////
// Frees the framebuffer and exits the driver.
//
MODULE_EXPORT void
stv5730_close (Driver *drvthis)
{
PrivateData *p = drvthis->private_data;
if (p != NULL) {
if (p->framebuf != NULL)
free(p->framebuf);
free(p);
}
drvthis->store_private_ptr(drvthis, NULL);
}
/////////////////////////////////////////////////////////////////
// Returns the display width
//
MODULE_EXPORT int
stv5730_width (Driver *drvthis)
{
return STV5730_WID;
}
/////////////////////////////////////////////////////////////////
// Returns the display height
//
MODULE_EXPORT int
stv5730_height (Driver *drvthis)
{
return STV5730_HGT;
}
/////////////////////////////////////////////////////////////////
// Returns the number of pixels a character is wide
//
MODULE_EXPORT int
stv5730_cellwidth (Driver *drvthis)
{
return 4;
}
/////////////////////////////////////////////////////////////////
// Returns the number of pixels a character is high
//
MODULE_EXPORT int
stv5730_cellheight (Driver *drvthis)
{
return 6;
}
// cellwidth and cellheight are only needed for old_vbar.
// Therefor these values are now hardcoded into these functions.
// When old_vbar is not used anymore, these two functions can be removed.
/////////////////////////////////////////////////////////////////
// Clears the screen
//
MODULE_EXPORT void
stv5730_clear (Driver *drvthis)
{
PrivateData *p = drvthis->private_data;
memset(p->framebuf, 0x0B, STV5730_WID * STV5730_HGT);
}
/////////////////////////////////////////////////////////////////
//
// Flushes all output to the lcd...
//
MODULE_EXPORT void
stv5730_flush (Driver *drvthis)
{
PrivateData *p = drvthis->private_data;
int i, j, atr;
stv5730_locate(p->port, p->flags, 0, 0);
for (i = 0; i < STV5730_HGT; i++) {
if (i == 0)
atr = (STV5730_COL_FLINE << 8);
else
atr = (STV5730_COL_TEXT << 8);
stv5730_write16bit(p->port, p->flags, 0x1000 + atr + p->framebuf[i * STV5730_WID] +
p->charattrib);
for (j = 1; j < STV5730_WID; j++) {
if (p->framebuf[j + (i * STV5730_WID) - 1] !=
p->framebuf[j + (i * STV5730_WID)])
stv5730_write8bit(p->port, p->flags, p->framebuf[j + (i * STV5730_WID)]);
else
stv5730_write0bit(p->port, p->flags);
}
}
}
/////////////////////////////////////////////////////////////////
// Prints a string on the screen, at position (x,y). The
// upper-left is (1,1), and the lower right should be (28,11).
//
MODULE_EXPORT void
stv5730_string (Driver *drvthis, int x, int y, const char string[])
{
//PrivateData *p = drvthis->private_data;
int i;
x--; // Convert 1-based coords to 0-based...
y--;
for (i = 0; string[i] != '\0'; i++)
stv5730_drawchar2fb(drvthis, x + i, y, string[i]);
}
/////////////////////////////////////////////////////////////////
// Writes char c at position x,y into the framebuffer.
// x and y are 1-based textmode coordinates.
//
MODULE_EXPORT void
stv5730_chr (Driver *drvthis, int x, int y, char c)
{
//PrivateData *p = drvthis->private_data;
y--;
x--;
stv5730_drawchar2fb(drvthis, x, y, c);
}
/////////////////////////////////////////////////////////////////
// This function draws ugly big numbers. We could use the zoom
// feature of the stv5730 if we'd know when big numbers start
// and stop.
MODULE_EXPORT void
stv5730_num (Driver *drvthis, int x, int num)
{
//PrivateData *p = drvthis->private_data;
int i, j;
x--;
if ((x >= STV5730_WID) || (num < 0) || (num > 10))
return;
for (j = 1; j < 10; j++) {
if (num != 10) {
for (i = 0; i < 3; i++)
stv5730_drawchar2fb(drvthis, x + i, j, '0' + num);
}
else {
stv5730_drawchar2fb(drvthis, x, j, ':');
}
}
}
/////////////////////////////////////////////////////////////////
// Draws a vertical bar from the bottom up to the last 7 rows of the
// framebuffer at 1-based position x. len is given in pixels.
//
MODULE_EXPORT void
stv5730_old_vbar (Driver *drvthis, int x, int len)
{
PrivateData *p = drvthis->private_data;
int i;
x--;
if (x < 0 || len < 0 || (len / 6) >= STV5730_WID)
return;
for (i = 0; i <= len; i += 6) {
if (len >= (i + 6)) /* 6 = cellheight */
p->framebuf[((10 - (i / 6)) * STV5730_WID) + x] = 0x77;
else
p->framebuf[((10 - (i / 6)) * STV5730_WID) + x] = 0x72 + (len % 6);
}
}
/////////////////////////////////////////////////////////////////
// Draws a horizontal bar from left to right at 1-based position
// x,y into the framebuffer. len is given in pixels.
// It uses the STV5730 'channel-tuning' chars(0x64-0x68) to do
// this.
MODULE_EXPORT void
stv5730_old_hbar (Driver *drvthis, int x, int y, int len)
{
PrivateData *p = drvthis->private_data;
int i;
x--;
y--;
if (y < 0 || y >= STV5730_HGT || x < 0 || len < 0
|| (x + (len / 5)) >= STV5730_WID)
return;
for (i = 0; i <= len; i += 5) {
if (len >= (i + 4)) /* 4 = cellwidth */
p->framebuf[(y * STV5730_WID) + x + (i / 5)] = 0x64;
else
p->framebuf[(y * STV5730_WID) + x + (i / 5)] = 0x65 + (len % 5);
}
}
/////////////////////////////////////////////////////////////////
// Reprogrammes character dest to contain an icon given by
// which.
// The STV5730 has no programmable chars. The charset is very
// limited, it doesn't even contain a '%' char. But wait...
// It contains a heartbeat char ! :-)
MODULE_EXPORT void
stv5730_old_icon (Driver *drvthis, int which, char dest)
{
//PrivateData *p = drvthis->private_data;
switch (which) {
case 0: // 0:empty Heart
stv5730_to_ascii[(int) dest] = 0x71;
break;
case 1: // 1:Filled Heart
stv5730_to_ascii[(int) dest] = 0x0B;
break;
case 2: // 2:Ellipsis
stv5730_to_ascii[(int) dest] = 0x5F;
break;
default:
stv5730_to_ascii[(int) dest] = 0x0B;
break;
}
}
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