patch-2.1.30 linux/drivers/sbus/char/bwtwo.c

• Lines: 140
• Date: Thu Mar 20 17:11:52 1997
• Orig file: v2.1.29/linux/drivers/sbus/char/bwtwo.c
• Orig date: Mon Dec 30 02:00:04 1996

diff -u --recursive --new-file v2.1.29/linux/drivers/sbus/char/bwtwo.c linux/drivers/sbus/char/bwtwo.c
@@ -1,7 +1,8 @@
-/* $Id: bwtwo.c,v 1.9 1996/12/23 10:15:57 ecd Exp $
+/* $Id: bwtwo.c,v 1.10 1997/03/12 23:25:15 ecd Exp $
  * bwtwo.c: bwtwo console driver
  *
  * Copyright (C) 1996 Miguel de Icaza ([email protected])
+ * Copyright (C) 1997 Eddie C. Dost   ([email protected])
  */
 
 #include <linux/kd.h>
@@ -29,9 +30,30 @@
 	__volatile__ __u8		status;
 	__volatile__ __u8		cursor_start;
 	__volatile__ __u8		cursor_end;
-	__volatile__ __u8		vcontrol[12];
+	__volatile__ __u8		h_blank_start;
+	__volatile__ __u8		h_blank_end;
+	__volatile__ __u8		h_sync_start;
+	__volatile__ __u8		h_sync_end;
+	__volatile__ __u8		comp_sync_end;
+	__volatile__ __u8		v_blank_start_high;
+	__volatile__ __u8		v_blank_start_low;
+	__volatile__ __u8		v_blank_end;
+	__volatile__ __u8		v_sync_start;
+	__volatile__ __u8		v_sync_end;
+	__volatile__ __u8		xfer_holdoff_start;
+	__volatile__ __u8		xfer_holdoff_end;
 };
 
+/* Status Register Constants */
+#define BWTWO_SR_RES_MASK	0x70
+#define BWTWO_SR_1600_1280	0x50
+#define BWTWO_SR_1152_900_76_A	0x40
+#define BWTWO_SR_1152_900_76_B	0x60
+#define BWTWO_SR_ID_MASK	0x0f
+#define BWTWO_SR_ID_MONO	0x02
+#define BWTWO_SR_ID_MONO_ECL	0x03
+#define BWTWO_SR_ID_MSYNC	0x04
+
 /* Control Register Constants */
 #define BWTWO_CTL_ENABLE_INTS   0x80
 #define BWTWO_CTL_ENABLE_VIDEO  0x40
@@ -85,7 +107,44 @@
 	fb->info.bwtwo.regs->control |= BWTWO_CTL_ENABLE_VIDEO;
 }
 
-__initfunc(void bwtwo_setup (fbinfo_t *fb, int slot, uint bwtwo, int bw2_io))
+
+static u8 bw2regs_1600[] __initdata = {
+	0x14, 0x8b,	0x15, 0x28,	0x16, 0x03,	0x17, 0x13,
+	0x18, 0x7b,	0x19, 0x05,	0x1a, 0x34,	0x1b, 0x2e,
+	0x1c, 0x00,	0x1d, 0x0a,	0x1e, 0xff,	0x1f, 0x01,
+	0x10, 0x21,	0
+};
+
+static u8 bw2regs_ecl[] __initdata = {
+	0x14, 0x65,	0x15, 0x1e,	0x16, 0x04,	0x17, 0x0c,
+	0x18, 0x5e,	0x19, 0x03,	0x1a, 0xa7,	0x1b, 0x23,
+	0x1c, 0x00,	0x1d, 0x08,	0x1e, 0xff,	0x1f, 0x01,
+	0x10, 0x20,	0
+};
+
+static u8 bw2regs_analog[] __initdata = {
+	0x14, 0xbb,	0x15, 0x2b,	0x16, 0x03,	0x17, 0x13,
+	0x18, 0xb0,	0x19, 0x03,	0x1a, 0xa6,	0x1b, 0x22,
+	0x1c, 0x01,	0x1d, 0x05,	0x1e, 0xff,	0x1f, 0x01,
+	0x10, 0x20,	0
+};
+
+static u8 bw2regs_76hz[] __initdata = {
+	0x14, 0xb7,	0x15, 0x27,	0x16, 0x03,	0x17, 0x0f,
+	0x18, 0xae,	0x19, 0x03,	0x1a, 0xae,	0x1b, 0x2a,
+	0x1c, 0x01,	0x1d, 0x09,	0x1e, 0xff,	0x1f, 0x01,
+	0x10, 0x24,	0
+};
+
+static u8 bw2regs_66hz[] __initdata = {
+	0x14, 0xbb,	0x15, 0x2b,	0x16, 0x04,	0x17, 0x14,
+	0x18, 0xae,	0x19, 0x03,	0x1a, 0xa8,	0x1b, 0x24,
+	0x1c, 0x01,	0x1d, 0x05,	0x1e, 0xff,	0x1f, 0x01,
+	0x10, 0x20,	0
+};
+
+__initfunc(void bwtwo_setup (fbinfo_t *fb, int slot, uint bwtwo, int bw2_io,
+			     struct linux_sbus_device *sbdp))
 {
 	printk ("bwtwo%d at 0x%8.8x\n", slot, bwtwo);
 	fb->type.fb_cmsize = 0;
@@ -95,9 +154,51 @@
 	fb->reset = 0;
 	fb->blank = bwtwo_blank;
 	fb->unblank = bwtwo_unblank;
+
 	fb->info.bwtwo.regs = sparc_alloc_io ((void *)bwtwo +
 		BWTWO_REGISTER_OFFSET, 0, sizeof (struct bwtwo_regs),
 		"bwtwo_regs", bw2_io, 0);
+
+	if (!prom_getbool(sbdp->prom_node, "width")) {
+		/* Ugh, broken PROM didn't initialize us.
+		 * Let's deal with this ourselves.
+		 */
+		u8 status, mon;
+		u8 *p;
+
+		status = fb->info.bwtwo.regs->status;
+		mon = status & BWTWO_SR_RES_MASK;
+		switch (status & BWTWO_SR_ID_MASK) {
+			case BWTWO_SR_ID_MONO_ECL:
+				if (mon == BWTWO_SR_1600_1280) {
+					p = bw2regs_1600;
+					fb->type.fb_width = 1600;
+					fb->type.fb_height = 1280;
+				} else {
+					p = bw2regs_ecl;
+				}
+				break;
+			case BWTWO_SR_ID_MONO:
+				p = bw2regs_analog;
+				break;
+			case BWTWO_SR_ID_MSYNC:
+				if (mon == BWTWO_SR_1152_900_76_A ||
+				    mon == BWTWO_SR_1152_900_76_B) {
+					p = bw2regs_76hz;
+				} else {
+					p = bw2regs_66hz;
+				}
+				break;
+			default:
+				prom_printf("bwtwo: can't handle SR %02x\n",
+					    status);
+				prom_halt();
+				return; /* fool gcc. */
+		}
+		for ( ; *p; p += 2)
+			((u8 *)fb->info.bwtwo.regs)[p[0]] = p[1];
+	}
+
 	if(!fb->base)
 		fb->base = (unsigned long) sparc_alloc_io((void *)bwtwo, 0,
 		  ((fb->type.fb_depth*fb->type.fb_height*fb->type.fb_width)/8),