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authorwdenk <wdenk>2003-03-06 21:55:29 +0000
committerwdenk <wdenk>2003-03-06 21:55:29 +0000
commit1cb8e980c41e86760fa93de63f4e4cf643bef9d9 (patch)
treee1993fba07dea51d92f1cec4c814a67173c1f8fb /board/trab/vfd.c
parent500545cc6b83958209128bffa825b3c842a21a4e (diff)
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* Patches by David Müller, 31 Jan 2003:
- minimal setup for CardBus bridges - add EEPROM read/write support in the CS8900 driver - add support for the builtin I2C controller in the Samsung s3c24x0 chips - add support for MPL's VCMA9 (Samsung s3c2410 based) board * Patch by Steven Scholz, 04 Feb 2003: add support for RTC DS1307 * Patch by Reinhard Meyer, 5 Feb 2003: fix PLPRCR/SCCR init sequence on 8xx to allow for changes of EBDF by software * Patch by Vladimir Gurevich, 07 Feb 2003: "API-compatibility patch" for 4xx I2C driver
Diffstat (limited to 'board/trab/vfd.c')
-rw-r--r--board/trab/vfd.c45
1 files changed, 23 insertions, 22 deletions
diff --git a/board/trab/vfd.c b/board/trab/vfd.c
index fa1194c..5e601ef 100644
--- a/board/trab/vfd.c
+++ b/board/trab/vfd.c
@@ -55,7 +55,6 @@
#define BLAU 0x0C
#define VIOLETT 0X0D
-ulong vfdbase;
ulong frame_buf_size;
#define frame_buf_offs 4
@@ -86,7 +85,7 @@ void init_grid_ctrl(void)
else
val = ~0;
- for (adr = vfdbase; adr <= (vfdbase+7168); adr += 4) {
+ for (adr = gd->fb_base; adr <= (gd->fb_base+7168); adr += 4) {
(*(volatile ulong*)(adr)) = val;
}
@@ -100,7 +99,7 @@ void init_grid_ctrl(void)
/* wrap arround if offset (see manual S3C2400) */
if (bit>=frame_buf_size*8)
bit = bit - (frame_buf_size * 8);
- adr = vfdbase + (bit/32) * 4 + (3 - (bit%32) / 8);
+ adr = gd->fb_base + (bit/32) * 4 + (3 - (bit%32) / 8);
bit_nr = bit % 8;
bit_nr = (bit_nr > 3) ? bit_nr-4 : bit_nr+4;
temp=(*(volatile unsigned char*)(adr));
@@ -117,7 +116,7 @@ void init_grid_ctrl(void)
/* wrap arround if offset (see manual S3C2400) */
if (bit>=frame_buf_size*8)
bit = bit-(frame_buf_size*8);
- adr = vfdbase+(bit/32)*4+(3-(bit%32)/8);
+ adr = gd->fb_base+(bit/32)*4+(3-(bit%32)/8);
bit_nr = bit%8;
bit_nr = (bit_nr>3)?bit_nr-4:bit_nr+4;
temp=(*(volatile unsigned char*)(adr));
@@ -138,7 +137,7 @@ void init_grid_ctrl(void)
/* wrap arround if offset (see manual S3C2400) */
if (bit>=frame_buf_size*8)
bit = bit - (frame_buf_size * 8);
- adr = vfdbase + (bit/32) * 4 + (3 - (bit%32) / 8);
+ adr = gd->fb_base + (bit/32) * 4 + (3 - (bit%32) / 8);
bit_nr = bit % 8;
bit_nr = (bit_nr > 3) ? bit_nr-4 : bit_nr+4;
temp=(*(volatile unsigned char*)(adr));
@@ -154,7 +153,7 @@ void init_grid_ctrl(void)
/* wrap arround if offset (see manual S3C2400) */
if (bit>=frame_buf_size*8)
bit = bit-(frame_buf_size*8);
- adr = vfdbase+(bit/32)*4+(3-(bit%32)/8);
+ adr = gd->fb_base+(bit/32)*4+(3-(bit%32)/8);
bit_nr = bit%8;
bit_nr = (bit_nr>3)?bit_nr-4:bit_nr+4;
temp=(*(volatile unsigned char*)(adr));
@@ -254,7 +253,7 @@ void create_vfd_table(void)
for(color=0;color<2;color++) {
for(display=0;display<4;display++) {
for(entry=0;entry<2;entry++) {
- unsigned long adr = vfdbase;
+ unsigned long adr = gd->fb_base;
unsigned int bit_nr = 0;
if (vfd_table[x][y][color][display][entry]) {
@@ -266,7 +265,7 @@ void create_vfd_table(void)
*/
if (pixel>=frame_buf_size*8)
pixel = pixel-(frame_buf_size*8);
- adr = vfdbase+(pixel/32)*4+(3-(pixel%32)/8);
+ adr = gd->fb_base+(pixel/32)*4+(3-(pixel%32)/8);
bit_nr = pixel%8;
bit_nr = (bit_nr>3)?bit_nr-4:bit_nr+4;
}
@@ -375,7 +374,7 @@ int vfd_init_clocks(void)
rPCCON = (rPCCON & 0xFFFFFF00)| 0x000000AA;
/* Port-Pins als LCD-Ausgang */
rPDCON = (rPDCON & 0xFFFFFF03)| 0x000000A8;
-#ifdef WITH_VFRAME
+#ifdef CFG_WITH_VFRAME
/* mit VFRAME zum Messen */
rPDCON = (rPDCON & 0xFFFFFF00)| 0x000000AA;
#endif
@@ -385,10 +384,18 @@ int vfd_init_clocks(void)
rLCDCON4 = 0x00000001;
rLCDCON5 = 0x00000440;
rLCDCON1 = 0x00000B75;
+
+ return 0;
}
/*
* initialize LCD-Controller of the S3C2400 for using VFDs
+ *
+ * VFD detection depends on the board revision:
+ * starting from Rev. 200 a type code can be read from the data pins,
+ * driven by some pull-up resistors; all earlier systems must be
+ * manually configured. The type is set in the "vfd_type" environment
+ * variable.
*/
int drv_vfd_init(void)
{
@@ -406,21 +413,15 @@ int drv_vfd_init(void)
/* try to determine display type from the value
* defined by pull-ups
*/
- rPCUP = (rPCUP | 0x000F); /* activate GPC0...GPC3 pullups */
+ rPCUP = (rPCUP & 0xFFF0); /* activate GPC0...GPC3 pullups */
rPCCON = (rPCCON & 0xFFFFFF00); /* configure GPC0...GPC3 as inputs */
+ udelay(10); /* allow signals to settle */
vfd_id = (~rPCDAT) & 0x000F; /* read GPC0...GPC3 port pins */
debug("Detecting Revison of WA4-VFD: ID=0x%X\n", vfd_id);
switch (vfd_id) {
- case 0: /* board revision <= Rev.100 */
-/*-----*/
- gd->vfd_inv_data = 0;
- if (0)
- gd->vfd_type = VFD_TYPE_MN11236;
- else
- gd->vfd_type = VFD_TYPE_T119C;
-/*-----*/
+ case 0: /* board revision < Rev.200 */
if ((tmp = getenv ("vfd_type")) == NULL) {
break;
}
@@ -435,7 +436,7 @@ int drv_vfd_init(void)
gd->vfd_inv_data = 0;
break;
- default: /* default to MN11236, data inverted */
+ default: /* default to MN11236, data inverted */
gd->vfd_type = VFD_TYPE_MN11236;
gd->vfd_inv_data = 1;
setenv ("vfd_type", "MN11236");
@@ -446,7 +447,7 @@ int drv_vfd_init(void)
"unknown",
gd->vfd_inv_data ? ", inverted data" : "");
- vfdbase = gd->fb_base;
+ gd->fb_base = gd->fb_base;
create_vfd_table();
init_grid_ctrl();
@@ -463,9 +464,9 @@ int drv_vfd_init(void)
* see manual S3C2400
*/
/* frame buffer startadr */
- rLCDSADDR1 = vfdbase >> 1;
+ rLCDSADDR1 = gd->fb_base >> 1;
/* frame buffer endadr */
- rLCDSADDR2 = (vfdbase + frame_buf_size) >> 1;
+ rLCDSADDR2 = (gd->fb_base + frame_buf_size) >> 1;
rLCDSADDR3 = ((256/4));
debug ("LCDSADDR1: %lX\n", rLCDSADDR1);