From 181cec4348da40331b3e8ab365732c025ec149b2 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Wed, 27 Apr 2011 19:24:15 +0200 Subject: Import upstream version 0.11.0~svn1143 --- drv_T6963.c | 576 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 576 insertions(+) create mode 100644 drv_T6963.c (limited to 'drv_T6963.c') diff --git a/drv_T6963.c b/drv_T6963.c new file mode 100644 index 0000000..40fd6db --- /dev/null +++ b/drv_T6963.c @@ -0,0 +1,576 @@ +/* $Id: drv_T6963.c 1136 2010-11-28 16:07:16Z mzuther $ + * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_T6963.c $ + * + * new style driver for T6963-based displays + * + * Copyright (C) 2003 Michael Reinelt + * Copyright (C) 2004 The LCD4Linux Team + * + * This file is part of LCD4Linux. + * + * LCD4Linux 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, or (at your option) + * any later version. + * + * LCD4Linux 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. + * + */ + +/* + * + * exported fuctions: + * + * struct DRIVER drv_T6963 + * + */ + +#include "config.h" + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "debug.h" +#include "cfg.h" +#include "qprintf.h" +#include "udelay.h" +#include "plugin.h" +#include "drv.h" +#include "drv_generic_graphic.h" +#include "drv_generic_parport.h" + +#ifdef WITH_DMALLOC +#include +#endif + +static char Name[] = "T6963"; +static int Model; + +typedef struct { + int type; + char *name; +} MODEL; + +static MODEL Models[] = { + {0x01, "T6963"}, + {0xff, "Unknown"} +}; + + +/* font width of display */ +static int CELL; + +/* text rows/columns */ +static int TROWS, TCOLS; + +/* SingleScan or DualScan */ +static int DualScan = 0; + +/* Timings */ +static int T_ACC, T_OH, T_PW, T_DH, T_CDS; + +/* soft-wiring */ +static unsigned char SIGNAL_CE; +static unsigned char SIGNAL_CD; +static unsigned char SIGNAL_RD; +static unsigned char SIGNAL_WR; + +unsigned char *Buffer1, *Buffer2; + +static int bug = 0; + + +/****************************************/ +/*** hardware dependant functions ***/ +/****************************************/ + +/* perform normal status check */ +static void drv_T6_status1(void) +{ + int n; + + /* turn off data line drivers */ + drv_generic_parport_direction(1); + + /* lower CE and RD */ + drv_generic_parport_control(SIGNAL_CE | SIGNAL_RD, 0); + + /* Access Time */ + ndelay(T_ACC); + + /* wait for STA0=1 and STA1=1 */ + n = 0; + do { + rep_nop(); + if (++n > 1000) { + debug("hang in status1"); + bug = 1; + break; + } + } while ((drv_generic_parport_read() & 0x03) != 0x03); + + /* rise RD and CE */ + drv_generic_parport_control(SIGNAL_RD | SIGNAL_CE, SIGNAL_RD | SIGNAL_CE); + + /* Output Hold Time */ + ndelay(T_OH); + + /* turn on data line drivers */ + drv_generic_parport_direction(0); +} + + +/* perform status check in "auto mode" */ +static void drv_T6_status2(void) +{ + int n; + + /* turn off data line drivers */ + drv_generic_parport_direction(1); + + /* lower RD and CE */ + drv_generic_parport_control(SIGNAL_RD | SIGNAL_CE, 0); + + /* Access Time */ + ndelay(T_ACC); + + /* wait for STA3=1 */ + n = 0; + do { + rep_nop(); + if (++n > 1000) { + debug("hang in status2"); + bug = 1; + break; + } + } while ((drv_generic_parport_read() & 0x08) != 0x08); + + /* rise RD and CE */ + drv_generic_parport_control(SIGNAL_RD | SIGNAL_CE, SIGNAL_RD | SIGNAL_CE); + + /* Output Hold Time */ + ndelay(T_OH); + + /* turn on data line drivers */ + drv_generic_parport_direction(0); +} + + +static void drv_T6_write_cmd(const unsigned char cmd) +{ + /* wait until the T6963 is idle */ + drv_T6_status1(); + + /* put data on DB1..DB8 */ + drv_generic_parport_data(cmd); + + /* lower WR and CE */ + drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, 0); + + /* Pulse width */ + ndelay(T_PW); + + /* rise WR and CE */ + drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE); + + /* Data Hold Time */ + ndelay(T_DH); +} + + +static void drv_T6_write_data(const unsigned char data) +{ + /* wait until the T6963 is idle */ + drv_T6_status1(); + + /* put data on DB1..DB8 */ + drv_generic_parport_data(data); + + /* lower C/D */ + drv_generic_parport_control(SIGNAL_CD, 0); + + /* C/D Setup Time */ + ndelay(T_CDS); + + /* lower WR and CE */ + drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, 0); + + /* Pulse Width */ + ndelay(T_PW); + + /* rise WR and CE */ + drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE); + + /* Data Hold Time */ + ndelay(T_DH); + + /* rise CD */ + drv_generic_parport_control(SIGNAL_CD, SIGNAL_CD); +} + + +static void drv_T6_write_auto(const unsigned char data) +{ + /* wait until the T6963 is idle */ + drv_T6_status2(); + + /* put data on DB1..DB8 */ + drv_generic_parport_data(data); + + /* lower C/D */ + drv_generic_parport_control(SIGNAL_CD, 0); + + /* C/D Setup Time */ + ndelay(T_CDS); + + /* lower WR and CE */ + drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, 0); + + /* Pulse Width */ + ndelay(T_PW); + + /* rise WR and CE */ + drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE); + + /* Data Hold Time */ + ndelay(T_DH); + + /* rise CD */ + drv_generic_parport_control(SIGNAL_CD, SIGNAL_CD); +} + + +#if 0 /* not used */ +static void drv_T6_send_byte(const unsigned char cmd, const unsigned char data) +{ + drv_T6_write_data(data); + drv_T6_write_cmd(cmd); +} +#endif + +static void drv_T6_send_word(const unsigned char cmd, const unsigned short data) +{ + drv_T6_write_data(data & 0xff); + drv_T6_write_data(data >> 8); + drv_T6_write_cmd(cmd); +} + + +static void drv_T6_clear(const unsigned short addr, const int len) +{ + int i; + + drv_T6_send_word(0x24, addr); /* Set Adress Pointer */ + drv_T6_write_cmd(0xb0); /* Set Data Auto Write */ + for (i = 0; i < len; i++) { + drv_T6_write_auto(0x0); + if (bug) { + bug = 0; + debug("bug occurred at byte %d of %d", i, len); + } + } + drv_T6_status2(); + drv_T6_write_cmd(0xb2); /* Auto Reset */ +} + + +static void drv_T6_copy(const unsigned short addr, const unsigned char *data, const int len) +{ + int i; + + drv_T6_send_word(0x24, addr); /* Set Adress Pointer */ + drv_T6_write_cmd(0xb0); /* Set Data Auto Write */ + for (i = 0; i < len; i++) { + drv_T6_write_auto(*(data++)); + if (bug) { + bug = 0; + debug("bug occurred at byte %d of %d, addr=%d", i, len, addr); + } + } + drv_T6_status2(); + drv_T6_write_cmd(0xb2); /* Auto Reset */ +} + + +static void drv_T6_blit(const int row, const int col, const int height, const int width) +{ + int r, c, a, b; + int i, j, e, n; + int base; + + for (r = row; r < row + height; r++) { + for (c = col; c < col + width; c++) { + unsigned char mask = 1 << (CELL - 1 - c % CELL); + if (drv_generic_graphic_black(r, c)) { + /* set bit */ + Buffer1[(r * DCOLS + c) / CELL] |= mask; + } else { + /* clear bit */ + Buffer1[(r * DCOLS + c) / CELL] &= ~mask; + } + } + a = (r * DCOLS + col) / CELL; + b = (r * DCOLS + col + width + CELL - 1) / CELL; + for (i = a; i <= b; i++) { + if (Buffer1[i] == Buffer2[i]) + continue; + for (j = i, e = 0; i <= b; i++) { + if (Buffer1[i] == Buffer2[i]) { + if (++e > 4) + break; + } else { + e = 0; + } + } + if (DualScan && r >= DROWS / 2) { + base = 0x8200 - DCOLS * DROWS / 2 / CELL; + } else { + base = 0x0200; + } + n = i - j - e + 1; + memcpy(Buffer2 + j, Buffer1 + j, n); + drv_T6_copy(base + j, Buffer1 + j, n); + } + } +} + + +static int drv_T6_start(const char *section) +{ + char *model, *s; + + model = cfg_get(section, "Model", "generic"); + if (model != NULL && *model != '\0') { + int i; + for (i = 0; Models[i].type != 0xff; i++) { + if (strcasecmp(Models[i].name, model) == 0) + break; + } + if (Models[i].type == 0xff) { + error("%s: %s.Model '%s' is unknown from %s", Name, section, model, cfg_source()); + return -1; + } + Model = i; + } else { + error("%s: empty '%s.Model' entry from %s", Name, section, cfg_source()); + return -1; + } + + /* read display size from config */ + s = cfg_get(section, "Size", NULL); + if (s == NULL || *s == '\0') { + error("%s: no '%s.Size' entry from %s", Name, section, cfg_source()); + return -1; + } + + DROWS = -1; + DCOLS = -1; + if (sscanf(s, "%dx%d", &DCOLS, &DROWS) != 2 || DCOLS < 1 || DROWS < 1) { + error("%s: bad Size '%s' from %s", Name, s, cfg_source()); + return -1; + } + + if (sscanf(s = cfg_get(section, "font", "6x8"), "%dx%d", &XRES, &YRES) != 2 || XRES < 1 || YRES < 1) { + error("%s: bad %s.Font '%s' from %s", Name, section, s, cfg_source()); + free(s); + return -1; + } + free(s); + + + /* get font width of display */ + cfg_number(section, "Cell", 6, 5, 8, &CELL); + + TROWS = DROWS / 8; /* text rows */ + TCOLS = DCOLS / CELL; /* text columns */ + + /* get DualScan mode */ + cfg_number(section, "DualScan", 0, 0, 1, &DualScan); + + info("%s: %dx%d %sScan %d bits/cell", Name, DCOLS, DROWS, DualScan ? "Dual" : "Single", CELL); + + Buffer1 = malloc(TCOLS * DROWS); + if (Buffer1 == NULL) { + error("%s: framebuffer #1 could not be allocated: malloc() failed", Name); + return -1; + } + + Buffer2 = malloc(TCOLS * DROWS); + if (Buffer2 == NULL) { + error("%s: framebuffer #2 could not be allocated: malloc() failed", Name); + return -1; + } + + memset(Buffer1, 0, TCOLS * DROWS * sizeof(*Buffer1)); + memset(Buffer2, 0, TCOLS * DROWS * sizeof(*Buffer2)); + + if (drv_generic_parport_open(section, Name) != 0) { + error("%s: could not initialize parallel port!", Name); + return -1; + } + + /* soft-wiring */ + if ((SIGNAL_CE = drv_generic_parport_wire_ctrl("CE", "STROBE")) == 0xff) + return -1; + if ((SIGNAL_CD = drv_generic_parport_wire_ctrl("CD", "SLCTIN")) == 0xff) + return -1; + if ((SIGNAL_RD = drv_generic_parport_wire_ctrl("RD", "AUTOFD")) == 0xff) + return -1; + if ((SIGNAL_WR = drv_generic_parport_wire_ctrl("WR", "INIT")) == 0xff) + return -1; + + /* timings */ + T_ACC = timing(Name, section, "ACC", 150, "ns"); /* Access Time */ + T_OH = timing(Name, section, "OH", 50, "ns"); /* Output Hold Time */ + T_PW = timing(Name, section, "PW", 80, "ns"); /* CE, RD, WR Pulse Width */ + T_DH = timing(Name, section, "DH", 40, "ns"); /* Data Hold Time */ + T_CDS = timing(Name, section, "CDS", 100, "ns"); /* C/D Setup Time */ + + + /* rise CE, CD, RD and WR */ + drv_generic_parport_control(SIGNAL_CE | SIGNAL_CD | SIGNAL_RD | SIGNAL_WR, + SIGNAL_CE | SIGNAL_CD | SIGNAL_RD | SIGNAL_WR); + /* set direction: write */ + drv_generic_parport_direction(0); + + + /* initialize display */ + + drv_T6_send_word(0x40, 0x0000); /* Set Text Home Address */ + drv_T6_send_word(0x41, TCOLS); /* Set Text Area */ + + drv_T6_send_word(0x42, 0x0200); /* Set Graphic Home Address */ + drv_T6_send_word(0x43, TCOLS); /* Set Graphic Area */ + + drv_T6_write_cmd(0x80); /* Mode Set: OR mode, Internal CG RAM mode */ + drv_T6_send_word(0x22, 0x0002); /* Set Offset Register */ + drv_T6_write_cmd(0x98); /* Set Display Mode: Curser off, Text off, Graphics on */ + drv_T6_write_cmd(0xa0); /* Set Cursor Pattern: 1 line cursor */ + drv_T6_send_word(0x21, 0x0000); /* Set Cursor Pointer to (0,0) */ + + + /* clear display */ + + if (DualScan) { + /* upper half */ + drv_T6_clear(0x0000, TCOLS * TROWS / 2); /* clear text area */ + drv_T6_clear(0x0200, TCOLS * TROWS * 8 / 2); /* clear graphic area */ + /* lower half */ + drv_T6_clear(0x8000, TCOLS * TROWS / 2); /* clear text area */ + drv_T6_clear(0x8200, TCOLS * TROWS * 8 / 2); /* clear graphic area */ + } else { + drv_T6_clear(0x0000, TCOLS * TROWS); /* clear text area */ + drv_T6_clear(0x0200, TCOLS * TROWS * 8); /* clear graphic area */ + } + + return 0; +} + + +/****************************************/ +/*** plugins ***/ +/****************************************/ + +/* none at the moment... */ + + +/****************************************/ +/*** exported functions ***/ +/****************************************/ + + +/* list models */ +int drv_T6_list(void) +{ + int i; + + for (i = 0; Models[i].type != 0xff; i++) { + printf("%s ", Models[i].name); + } + return 0; +} + + +/* initialize driver & display */ +int drv_T6_init(const char *section, const int quiet) +{ + int ret; + + info("%s: %s", Name, "$Rev: 1136 $"); + + /* real worker functions */ + drv_generic_graphic_real_blit = drv_T6_blit; + + /* start display */ + if ((ret = drv_T6_start(section)) != 0) + return ret; + + /* initialize generic graphic driver */ + if ((ret = drv_generic_graphic_init(section, Name)) != 0) + return ret; + + if (!quiet) { + char buffer[40]; + qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS); + if (drv_generic_graphic_greet(buffer, NULL)) { + sleep(3); + drv_generic_graphic_clear(); + } + } + + /* register plugins */ + /* none at the moment... */ + + + return 0; +} + + +/* close driver & display */ +int drv_T6_quit(const int quiet) +{ + + info("%s: shutting down.", Name); + + drv_generic_graphic_clear(); + + if (!quiet) { + drv_generic_graphic_greet("goodbye!", NULL); + } + + drv_generic_graphic_quit(); + drv_generic_parport_close(); + + if (Buffer1) { + free(Buffer1); + Buffer1 = NULL; + } + + if (Buffer2) { + free(Buffer2); + Buffer2 = NULL; + } + + return (0); +} + + +DRIVER drv_T6963 = { + .name = Name, + .list = drv_T6_list, + .init = drv_T6_init, + .quit = drv_T6_quit, +}; -- cgit v1.2.3