Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 428 insertions, 0 deletions

diff --git a/drivers/video/bw2.c b/drivers/video/bw2.c
new file mode 100644
index 00000000000..3d20b2d47d4
--- /dev/null
+++ b/drivers/video/bw2.c
@@ -0,0 +1,428 @@
+/* bw2.c: BWTWO frame buffer driver
+ *
+ * Copyright (C) 2003 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
+ * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
+ *
+ * Driver layout based loosely on tgafb.c, see that file for credits.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/fb.h>
+#include <linux/mm.h>
+
+#include <asm/io.h>
+#include <asm/sbus.h>
+#include <asm/oplib.h>
+#include <asm/fbio.h>
+
+#ifdef CONFIG_SPARC32
+#include <asm/sun4paddr.h>
+#endif
+
+#include "sbuslib.h"
+
+/*
+ * Local functions.
+ */
+
+static int bw2_blank(int, struct fb_info *);
+
+static int bw2_mmap(struct fb_info *, struct file *, struct vm_area_struct *);
+static int bw2_ioctl(struct inode *, struct file *, unsigned int,
+		     unsigned long, struct fb_info *);
+
+/*
+ *  Frame buffer operations
+ */
+
+static struct fb_ops bw2_ops = {
+	.owner			= THIS_MODULE,
+	.fb_blank		= bw2_blank,
+	.fb_fillrect		= cfb_fillrect,
+	.fb_copyarea		= cfb_copyarea,
+	.fb_imageblit		= cfb_imageblit,
+	.fb_mmap		= bw2_mmap,
+	.fb_ioctl		= bw2_ioctl,
+	.fb_cursor		= soft_cursor,
+};
+
+/* OBio addresses for the bwtwo registers */
+#define BWTWO_REGISTER_OFFSET 0x400000
+
+struct bt_regs {
+	volatile u32 addr;
+	volatile u32 color_map;
+	volatile u32 control;
+	volatile u32 cursor;
+};
+
+struct bw2_regs {
+	struct bt_regs	cmap;
+	volatile u8	control;
+	volatile u8	status;
+	volatile u8	cursor_start;
+	volatile u8	cursor_end;
+	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
+#define BWTWO_SR_ID_NOCONN	0x0a
+
+/* Control Register Constants */
+#define BWTWO_CTL_ENABLE_INTS   0x80
+#define BWTWO_CTL_ENABLE_VIDEO  0x40
+#define BWTWO_CTL_ENABLE_TIMING 0x20
+#define BWTWO_CTL_ENABLE_CURCMP 0x10
+#define BWTWO_CTL_XTAL_MASK     0x0C
+#define BWTWO_CTL_DIVISOR_MASK  0x03
+
+/* Status Register Constants */
+#define BWTWO_STAT_PENDING_INT  0x80
+#define BWTWO_STAT_MSENSE_MASK  0x70
+#define BWTWO_STAT_ID_MASK      0x0f
+
+struct bw2_par {
+	spinlock_t		lock;
+	struct bw2_regs		__iomem *regs;
+
+	u32			flags;
+#define BW2_FLAG_BLANKED	0x00000001
+
+	unsigned long		physbase;
+	unsigned long		fbsize;
+
+	struct sbus_dev		*sdev;
+	struct list_head	list;
+};
+
+/**
+ *      bw2_blank - Optional function.  Blanks the display.
+ *      @blank_mode: the blank mode we want.
+ *      @info: frame buffer structure that represents a single frame buffer
+ */
+static int
+bw2_blank(int blank, struct fb_info *info)
+{
+	struct bw2_par *par = (struct bw2_par *) info->par;
+	struct bw2_regs __iomem *regs = par->regs;
+	unsigned long flags;
+	u8 val;
+
+	spin_lock_irqsave(&par->lock, flags);
+
+	switch (blank) {
+	case FB_BLANK_UNBLANK: /* Unblanking */
+		val = sbus_readb(&regs->control);
+		val |= BWTWO_CTL_ENABLE_VIDEO;
+		sbus_writeb(val, &regs->control);
+		par->flags &= ~BW2_FLAG_BLANKED;
+		break;
+
+	case FB_BLANK_NORMAL: /* Normal blanking */
+	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
+	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
+	case FB_BLANK_POWERDOWN: /* Poweroff */
+		val = sbus_readb(&regs->control);
+		val &= ~BWTWO_CTL_ENABLE_VIDEO;
+		sbus_writeb(val, &regs->control);
+		par->flags |= BW2_FLAG_BLANKED;
+		break;
+	}
+
+	spin_unlock_irqrestore(&par->lock, flags);
+
+	return 0;
+}
+
+static struct sbus_mmap_map bw2_mmap_map[] = {
+	{
+		.size = SBUS_MMAP_FBSIZE(1)
+	},
+	{ .size = 0 }
+};
+
+static int bw2_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
+{
+	struct bw2_par *par = (struct bw2_par *)info->par;
+
+	return sbusfb_mmap_helper(bw2_mmap_map,
+				  par->physbase, par->fbsize,
+				  (par->sdev ?
+				   par->sdev->reg_addrs[0].which_io :
+				   0),
+				  vma);
+}
+
+static int bw2_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+		     unsigned long arg, struct fb_info *info)
+{
+	struct bw2_par *par = (struct bw2_par *) info->par;
+
+	return sbusfb_ioctl_helper(cmd, arg, info,
+				   FBTYPE_SUN2BW, 1, par->fbsize);
+}
+
+/*
+ *  Initialisation
+ */
+
+static void
+bw2_init_fix(struct fb_info *info, int linebytes)
+{
+	strlcpy(info->fix.id, "bwtwo", sizeof(info->fix.id));
+
+	info->fix.type = FB_TYPE_PACKED_PIXELS;
+	info->fix.visual = FB_VISUAL_MONO01;
+
+	info->fix.line_length = linebytes;
+
+	info->fix.accel = FB_ACCEL_SUN_BWTWO;
+}
+
+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
+};
+
+static void bw2_do_default_mode(struct bw2_par *par, struct fb_info *info,
+				int *linebytes)
+{
+	u8 status, mon;
+	u8 *p;
+
+	status = sbus_readb(&par->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;
+			info->var.xres = info->var.xres_virtual = 1600;
+			info->var.yres = info->var.yres_virtual = 1280;
+			*linebytes = 1600 / 8;
+		} 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;
+
+	case BWTWO_SR_ID_NOCONN:
+		return;
+
+	default:
+		prom_printf("bw2: can't handle SR %02x\n",
+			    status);
+		prom_halt();
+	}
+	for ( ; *p; p += 2) {
+		u8 __iomem *regp = &((u8 __iomem *)par->regs)[p[0]];
+		sbus_writeb(p[1], regp);
+	}
+}
+
+struct all_info {
+	struct fb_info info;
+	struct bw2_par par;
+	struct list_head list;
+};
+static LIST_HEAD(bw2_list);
+
+static void bw2_init_one(struct sbus_dev *sdev)
+{
+	struct all_info *all;
+	struct resource *resp;
+#ifdef CONFIG_SUN4
+	struct resource res;
+#endif
+	int linebytes;
+
+	all = kmalloc(sizeof(*all), GFP_KERNEL);
+	if (!all) {
+		printk(KERN_ERR "bw2: Cannot allocate memory.\n");
+		return;
+	}
+	memset(all, 0, sizeof(*all));
+
+	INIT_LIST_HEAD(&all->list);
+
+	spin_lock_init(&all->par.lock);
+	all->par.sdev = sdev;
+
+#ifdef CONFIG_SUN4
+	if (!sdev) {
+		all->par.physbase = sun4_bwtwo_physaddr;
+		res.start = sun4_bwtwo_physaddr;
+		res.end = res.start + BWTWO_REGISTER_OFFSET + sizeof(struct bw2_regs) - 1;
+		res.flags = IORESOURCE_IO;
+		resp = &res;
+		all->info.var.xres = all->info.var.xres_virtual = 1152;
+		all->info.var.yres = all->info.var.yres_virtual = 900;
+		all->info.var.bits_per_pixel = 1;
+		linebytes = 1152 / 8;
+	} else
+#else
+	{
+		if (!sdev)
+			BUG();
+		all->par.physbase = sdev->reg_addrs[0].phys_addr;
+		resp = &sdev->resource[0];
+		sbusfb_fill_var(&all->info.var, (sdev ? sdev->prom_node : 0), 1);
+		linebytes = prom_getintdefault(sdev->prom_node, "linebytes",
+					       all->info.var.xres);
+	}
+#endif
+	all->info.var.red.length = all->info.var.green.length =
+		all->info.var.blue.length = all->info.var.bits_per_pixel;
+	all->info.var.red.offset = all->info.var.green.offset =
+		all->info.var.blue.offset = 0;
+
+	all->par.regs = sbus_ioremap(resp, BWTWO_REGISTER_OFFSET,
+			     sizeof(struct bw2_regs), "bw2 regs");
+
+	if (sdev && !prom_getbool(sdev->prom_node, "width"))
+		bw2_do_default_mode(&all->par, &all->info, &linebytes);
+
+	all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
+
+	all->info.flags = FBINFO_DEFAULT;
+	all->info.fbops = &bw2_ops;
+#if defined(CONFIG_SPARC32)
+	if (sdev)
+		all->info.screen_base = (char __iomem *)
+			prom_getintdefault(sdev->prom_node, "address", 0);
+#endif
+	if (!all->info.screen_base)
+		all->info.screen_base =
+			sbus_ioremap(resp, 0, all->par.fbsize, "bw2 ram");
+	all->info.par = &all->par;
+
+	bw2_blank(0, &all->info);
+
+	bw2_init_fix(&all->info, linebytes);
+
+	if (register_framebuffer(&all->info) < 0) {
+		printk(KERN_ERR "bw2: Could not register framebuffer.\n");
+		kfree(all);
+		return;
+	}
+
+	list_add(&all->list, &bw2_list);
+
+	printk("bw2: bwtwo at %lx:%lx\n",
+	       (long) (sdev ? sdev->reg_addrs[0].which_io : 0),
+	       (long) all->par.physbase);
+}
+
+int __init bw2_init(void)
+{
+	struct sbus_bus *sbus;
+	struct sbus_dev *sdev;
+
+	if (fb_get_options("bw2fb", NULL))
+		return -ENODEV;
+
+#ifdef CONFIG_SUN4
+	bw2_init_one(NULL);
+#endif
+	for_all_sbusdev(sdev, sbus) {
+		if (!strcmp(sdev->prom_name, "bwtwo"))
+			bw2_init_one(sdev);
+	}
+
+	return 0;
+}
+
+void __exit bw2_exit(void)
+{
+	struct list_head *pos, *tmp;
+
+	list_for_each_safe(pos, tmp, &bw2_list) {
+		struct all_info *all = list_entry(pos, typeof(*all), list);
+
+		unregister_framebuffer(&all->info);
+		kfree(all);
+	}
+}
+
+int __init
+bw2_setup(char *arg)
+{
+	/* No cmdline options yet... */
+	return 0;
+}
+
+module_init(bw2_init);
+
+#ifdef MODULE
+module_exit(bw2_exit);
+#endif
+
+MODULE_DESCRIPTION("framebuffer driver for BWTWO chipsets");
+MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
+MODULE_LICENSE("GPL");