*** empty log message ***
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themythos
+63
-28
@@ -1,5 +1,5 @@
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/*
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* Base driver module for Toshiba T6963 based LCD displays. ver 2.0
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* Base driver module for Toshiba T6963 based LCD displays. ver 2.1
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*
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* Parts of this file are based on the kernel driver by Alexander Frink <Alexander.Frink@Uni-Mainz.DE>
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*
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@@ -138,12 +138,12 @@ t6963_init (Driver *drvthis, char *args)
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// Allocate memory for double buffering
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debug (RPT_DEBUG, "T6963: Allocating double buffering...");
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t6963_display_buffer1 = malloc (width * 6);
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t6963_display_buffer2 = malloc (width * 6);
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t6963_display_buffer1 = malloc (width * height);
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t6963_display_buffer2 = malloc (width * height);
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// Clear front and back buffer
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if(t6963_display_buffer1 && t6963_display_buffer2) {
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memset(t6963_display_buffer1, ' ', width * 6);
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memset(t6963_display_buffer1, ' ', width * 6);
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memset(t6963_display_buffer1, ' ', width * height);
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memset(t6963_display_buffer1, ' ', width * height);
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debug (RPT_DEBUG, "T6963: done!");
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} else {
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report (RPT_ERR, "T6963: No memory for double buffering!");
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@@ -151,13 +151,10 @@ t6963_init (Driver *drvthis, char *args)
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return -1;
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}
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/* ------------------- I N I T I A L I Z A T I O N ----------------------- */
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debug (RPT_DEBUG, "T6963: Sending init to display...");
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T6963_CEHI; // disable chip
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T6963_RDHI; // disable reading from LCD
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T6963_WRHI; // disable writing to LCD
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T6963_CDHI; // command/status mode
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t6963_low_set_control(1, 1, 1, 1);
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T6963_DATAOUT; // make 8-bit parallel port an output port
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debug (RPT_DEBUG, "T6963: set graphic/text home adress and area");
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@@ -180,7 +177,7 @@ t6963_init (Driver *drvthis, char *args)
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t6963_low_disable_mode (BLINK_ON);
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t6963_clear (drvthis);
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t6963_graphic_clear (drvthis, 0, 0, width, cellheight * 6);
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t6963_graphic_clear (drvthis, 0, 0, width, cellheight * height);
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t6963_flush(drvthis);
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debug (RPT_DEBUG, "T6963: Initialization done!");
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@@ -195,10 +192,11 @@ t6963_init (Driver *drvthis, char *args)
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MODULE_EXPORT void
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t6963_close (Driver *drvthis)
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{
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DEBUG3 ("Shutting down!\n");
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debug (RPT_INFO, "Shutting down!\n");
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t6963_low_disable_mode (BLINK_ON);
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ioperm(t6963_out_port, 3, 0);
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port_deny_full(t6963_out_port);
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if (framebuf != NULL)
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free (framebuf);
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if (t6963_display_buffer1 != NULL) free (t6963_display_buffer1);
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@@ -266,7 +264,7 @@ t6963_flush (Driver *drvthis)
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int i;
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DEBUG4 ("Flushing %i x %i\n", width, height);
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for (i = 0; i < (width * 6); i++)
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for (i = 0; i < (width * height); i++)
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{
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DEBUG4 ("%i%i|", t6963_display_buffer1[i], t6963_display_buffer2[i]);
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if (t6963_display_buffer1[i] != t6963_display_buffer2[i])
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@@ -436,33 +434,70 @@ t6963_heartbeat (Driver *drvthis, int type)
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}
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/* ---------------------- internal functions ------------------------------------- */
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void
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t6963_low_set_control(char wr, char ce, char cd, char rd)
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{
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unsigned char status = port_in(T6963_CONTROL_PORT); /* TODO: support multiple wirings! */
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if(wr == 1) /* WR = HI */
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status &= 0xfe;
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else if(wr == 0)
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status |= 0x01;
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if(ce == 1) /* CE = HI */
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status &= 0xfd;
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else if(ce == 0)
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status |= 0x02;
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if(cd == 0) /* CD = HI */
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status &= 0xfb;
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else if(cd == 1)
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status |= 0x04;
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if(rd == 1) /* CE = HI */
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status &= 0xf7;
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else if(rd == 0)
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status |= 0x08;
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port_out(T6963_CONTROL_PORT, status);
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}
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void
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t6963_low_dsp_ready (void)
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{
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int i = 0;
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int input;
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T6963_DATAIN;
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do {
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i++;
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t6963_low_set_control(1, 0, 1, -1);
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t6963_low_set_control(1, 0, 1, 0);
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input = port_in(T6963_DATA_PORT);
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t6963_low_set_control(1, 0, 1, -1);
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} while (i < 50000 && (input & 3)!=3);
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T6963_DATAOUT;
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}
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void
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t6963_low_data (u8 byte)
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{
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// lcd_wait_until_ready();
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t6963_low_dsp_ready();
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// port_out(0x80, 0x00);
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T6963_CDLO;
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T6963_WRLO; // activate LCD's write mode
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port_out(T6963_DATA_PORT, byte); // write value to data port
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T6963_CELO; // pulse enable LOW > 80 ns (hah!)
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T6963_CEHI; // return enable HIGH
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T6963_WRHI; // restore Write mode to inactive
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t6963_low_set_control(1, 1, 0, 1);
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t6963_low_set_control(0, 0, 0, 1);
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t6963_low_set_control(1, 1, 1, 1);
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}
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void
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t6963_low_command (u8 byte)
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{
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// lcd_wait_until_ready();
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t6963_low_dsp_ready();
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// port_out(0x80, 0x00);
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port_out(T6963_DATA_PORT, byte); // present data to LCD on PC's port pins
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T6963_CDHI; // control/status mode
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T6963_RDHI; // make sure LCD read mode is off
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T6963_WRLO; // activate LCD write mode
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T6963_CELO; // pulse ChipEnable LOW, > 80 ns, enables LCD I/O
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T6963_CEHI; // disable LCD I/O
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T6963_WRHI; // deactivate write mode
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t6963_low_set_control(1, 1, 1, 1);
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t6963_low_set_control(0, 0, 1, 1);
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t6963_low_set_control(1, 1, 0, 1);
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}
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void
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