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, 504 insertions, 0 deletions

diff --git a/drivers/video/tcx.c b/drivers/video/tcx.c
new file mode 100644
index 0000000..e2fa9e1
--- /dev/null
+++ b/drivers/video/tcx.c
@@ -0,0 +1,504 @@
+/* tcx.c: TCX 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) 1996 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>
+
+#include "sbuslib.h"
+
+/*
+ * Local functions.
+ */
+
+static int tcx_setcolreg(unsigned, unsigned, unsigned, unsigned,
+			 unsigned, struct fb_info *);
+static int tcx_blank(int, struct fb_info *);
+
+static int tcx_mmap(struct fb_info *, struct file *, struct vm_area_struct *);
+static int tcx_ioctl(struct inode *, struct file *, unsigned int,
+		     unsigned long, struct fb_info *);
+
+/*
+ *  Frame buffer operations
+ */
+
+static struct fb_ops tcx_ops = {
+	.owner			= THIS_MODULE,
+	.fb_setcolreg		= tcx_setcolreg,
+	.fb_blank		= tcx_blank,
+	.fb_fillrect		= cfb_fillrect,
+	.fb_copyarea		= cfb_copyarea,
+	.fb_imageblit		= cfb_imageblit,
+	.fb_mmap		= tcx_mmap,
+	.fb_ioctl		= tcx_ioctl,
+	.fb_cursor		= soft_cursor,
+};
+
+/* THC definitions */
+#define TCX_THC_MISC_REV_SHIFT       16
+#define TCX_THC_MISC_REV_MASK        15
+#define TCX_THC_MISC_VSYNC_DIS       (1 << 25)
+#define TCX_THC_MISC_HSYNC_DIS       (1 << 24)
+#define TCX_THC_MISC_RESET           (1 << 12)
+#define TCX_THC_MISC_VIDEO           (1 << 10)
+#define TCX_THC_MISC_SYNC            (1 << 9)
+#define TCX_THC_MISC_VSYNC           (1 << 8)
+#define TCX_THC_MISC_SYNC_ENAB       (1 << 7)
+#define TCX_THC_MISC_CURS_RES        (1 << 6)
+#define TCX_THC_MISC_INT_ENAB        (1 << 5)
+#define TCX_THC_MISC_INT             (1 << 4)
+#define TCX_THC_MISC_INIT            0x9f
+#define TCX_THC_REV_REV_SHIFT        20
+#define TCX_THC_REV_REV_MASK         15
+#define TCX_THC_REV_MINREV_SHIFT     28
+#define TCX_THC_REV_MINREV_MASK      15
+
+/* The contents are unknown */
+struct tcx_tec {
+	volatile u32 tec_matrix;
+	volatile u32 tec_clip;
+	volatile u32 tec_vdc;
+};
+
+struct tcx_thc {
+	volatile u32 thc_rev;
+        u32 thc_pad0[511];
+	volatile u32 thc_hs;		/* hsync timing */
+	volatile u32 thc_hsdvs;
+	volatile u32 thc_hd;
+	volatile u32 thc_vs;		/* vsync timing */
+	volatile u32 thc_vd;
+	volatile u32 thc_refresh;
+	volatile u32 thc_misc;
+	u32 thc_pad1[56];
+	volatile u32 thc_cursxy;	/* cursor x,y position (16 bits each) */
+	volatile u32 thc_cursmask[32];	/* cursor mask bits */
+	volatile u32 thc_cursbits[32];	/* what to show where mask enabled */
+};
+
+struct bt_regs {
+	volatile u32 addr;
+	volatile u32 color_map;
+	volatile u32 control;
+	volatile u32 cursor;
+};
+
+#define TCX_MMAP_ENTRIES 14
+
+struct tcx_par {
+	spinlock_t		lock;
+	struct bt_regs		__iomem *bt;
+	struct tcx_thc		__iomem *thc;
+	struct tcx_tec		__iomem *tec;
+	volatile u32		__iomem *cplane;
+
+	u32			flags;
+#define TCX_FLAG_BLANKED	0x00000001
+
+	unsigned long		physbase;
+	unsigned long		fbsize;
+
+	struct sbus_mmap_map	mmap_map[TCX_MMAP_ENTRIES];
+	int			lowdepth;
+
+	struct sbus_dev		*sdev;
+	struct list_head	list;
+};
+
+/* Reset control plane so that WID is 8-bit plane. */
+static void __tcx_set_control_plane (struct tcx_par *par)
+{
+	volatile u32 __iomem *p, *pend;
+        
+	if (par->lowdepth)
+		return;
+
+	p = par->cplane;
+	if (p == NULL)
+		return;
+	for (pend = p + par->fbsize; p < pend; p++) {
+		u32 tmp = sbus_readl(p);
+
+		tmp &= 0xffffff;
+		sbus_writel(tmp, p);
+	}
+}
+                                                
+static void tcx_reset (struct fb_info *info)
+{
+	struct tcx_par *par = (struct tcx_par *) info->par;
+	unsigned long flags;
+
+	spin_lock_irqsave(&par->lock, flags);
+	__tcx_set_control_plane(par);
+	spin_unlock_irqrestore(&par->lock, flags);
+}
+
+/**
+ *      tcx_setcolreg - Optional function. Sets a color register.
+ *      @regno: boolean, 0 copy local, 1 get_user() function
+ *      @red: frame buffer colormap structure
+ *      @green: The green value which can be up to 16 bits wide
+ *      @blue:  The blue value which can be up to 16 bits wide.
+ *      @transp: If supported the alpha value which can be up to 16 bits wide.
+ *      @info: frame buffer info structure
+ */
+static int tcx_setcolreg(unsigned regno,
+			 unsigned red, unsigned green, unsigned blue,
+			 unsigned transp, struct fb_info *info)
+{
+	struct tcx_par *par = (struct tcx_par *) info->par;
+	struct bt_regs __iomem *bt = par->bt;
+	unsigned long flags;
+
+	if (regno >= 256)
+		return 1;
+
+	red >>= 8;
+	green >>= 8;
+	blue >>= 8;
+
+	spin_lock_irqsave(&par->lock, flags);
+
+	sbus_writel(regno << 24, &bt->addr);
+	sbus_writel(red << 24, &bt->color_map);
+	sbus_writel(green << 24, &bt->color_map);
+	sbus_writel(blue << 24, &bt->color_map);
+
+	spin_unlock_irqrestore(&par->lock, flags);
+
+	return 0;
+}
+
+/**
+ *      tcx_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
+tcx_blank(int blank, struct fb_info *info)
+{
+	struct tcx_par *par = (struct tcx_par *) info->par;
+	struct tcx_thc __iomem *thc = par->thc;
+	unsigned long flags;
+	u32 val;
+
+	spin_lock_irqsave(&par->lock, flags);
+
+	val = sbus_readl(&thc->thc_misc);
+
+	switch (blank) {
+	case FB_BLANK_UNBLANK: /* Unblanking */
+		val &= ~(TCX_THC_MISC_VSYNC_DIS |
+			 TCX_THC_MISC_HSYNC_DIS);
+		val |= TCX_THC_MISC_VIDEO;
+		par->flags &= ~TCX_FLAG_BLANKED;
+		break;
+
+	case FB_BLANK_NORMAL: /* Normal blanking */
+		val &= ~TCX_THC_MISC_VIDEO;
+		par->flags |= TCX_FLAG_BLANKED;
+		break;
+
+	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
+		val |= TCX_THC_MISC_VSYNC_DIS;
+		break;
+	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
+		val |= TCX_THC_MISC_HSYNC_DIS;
+		break;
+
+	case FB_BLANK_POWERDOWN: /* Poweroff */
+		break;
+	};
+
+	sbus_writel(val, &thc->thc_misc);
+
+	spin_unlock_irqrestore(&par->lock, flags);
+
+	return 0;
+}
+
+static struct sbus_mmap_map __tcx_mmap_map[TCX_MMAP_ENTRIES] = {
+	{
+		.voff	= TCX_RAM8BIT,
+		.size	= SBUS_MMAP_FBSIZE(1)
+	},
+	{
+		.voff	= TCX_RAM24BIT,
+		.size	= SBUS_MMAP_FBSIZE(4)
+	},
+	{
+		.voff	= TCX_UNK3,
+		.size	= SBUS_MMAP_FBSIZE(8)
+	},
+	{
+		.voff	= TCX_UNK4,
+		.size	= SBUS_MMAP_FBSIZE(8)
+	},
+	{
+		.voff	= TCX_CONTROLPLANE,
+		.size	= SBUS_MMAP_FBSIZE(4)
+	},
+	{
+		.voff	= TCX_UNK6,
+		.size	= SBUS_MMAP_FBSIZE(8)
+	},
+	{
+		.voff	= TCX_UNK7,
+		.size	= SBUS_MMAP_FBSIZE(8)
+	},
+	{
+		.voff	= TCX_TEC,
+		.size	= PAGE_SIZE
+	},
+	{
+		.voff	= TCX_BTREGS,
+		.size	= PAGE_SIZE
+	},
+	{
+		.voff	= TCX_THC,
+		.size	= PAGE_SIZE
+	},
+	{
+		.voff	= TCX_DHC,
+		.size	= PAGE_SIZE
+	},
+	{
+		.voff	= TCX_ALT,
+		.size	= PAGE_SIZE
+	},
+	{
+		.voff	= TCX_UNK2,
+		.size	= 0x20000
+	},
+	{ .size = 0 }
+};
+
+static int tcx_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
+{
+	struct tcx_par *par = (struct tcx_par *)info->par;
+
+	return sbusfb_mmap_helper(par->mmap_map,
+				  par->physbase, par->fbsize,
+				  par->sdev->reg_addrs[0].which_io,
+				  vma);
+}
+
+static int tcx_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+		     unsigned long arg, struct fb_info *info)
+{
+	struct tcx_par *par = (struct tcx_par *) info->par;
+
+	return sbusfb_ioctl_helper(cmd, arg, info,
+				   FBTYPE_TCXCOLOR,
+				   (par->lowdepth ? 8 : 24),
+				   par->fbsize);
+}
+
+/*
+ *  Initialisation
+ */
+
+static void
+tcx_init_fix(struct fb_info *info, int linebytes)
+{
+	struct tcx_par *par = (struct tcx_par *)info->par;
+	const char *tcx_name;
+
+	if (par->lowdepth)
+		tcx_name = "TCX8";
+	else
+		tcx_name = "TCX24";
+
+	strlcpy(info->fix.id, tcx_name, sizeof(info->fix.id));
+
+	info->fix.type = FB_TYPE_PACKED_PIXELS;
+	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+
+	info->fix.line_length = linebytes;
+
+	info->fix.accel = FB_ACCEL_SUN_TCX;
+}
+
+struct all_info {
+	struct fb_info info;
+	struct tcx_par par;
+	struct list_head list;
+};
+static LIST_HEAD(tcx_list);
+
+static void tcx_init_one(struct sbus_dev *sdev)
+{
+	struct all_info *all;
+	int linebytes, i;
+
+	all = kmalloc(sizeof(*all), GFP_KERNEL);
+	if (!all) {
+		printk(KERN_ERR "tcx: 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;
+
+	all->par.lowdepth = prom_getbool(sdev->prom_node, "tcx-8-bit");
+
+	sbusfb_fill_var(&all->info.var, sdev->prom_node, 8);
+
+	linebytes = prom_getintdefault(sdev->prom_node, "linebytes",
+				       all->info.var.xres);
+	all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
+
+	all->par.tec = sbus_ioremap(&sdev->resource[7], 0,
+			     sizeof(struct tcx_tec), "tcx tec");
+	all->par.thc = sbus_ioremap(&sdev->resource[9], 0,
+			     sizeof(struct tcx_thc), "tcx thc");
+	all->par.bt = sbus_ioremap(&sdev->resource[8], 0,
+			     sizeof(struct bt_regs), "tcx dac");
+	memcpy(&all->par.mmap_map, &__tcx_mmap_map, sizeof(all->par.mmap_map));
+	if (!all->par.lowdepth) {
+		all->par.cplane = sbus_ioremap(&sdev->resource[4], 0,
+				     all->par.fbsize * sizeof(u32), "tcx cplane");
+	} else {
+		all->par.mmap_map[1].size = SBUS_MMAP_EMPTY;
+		all->par.mmap_map[4].size = SBUS_MMAP_EMPTY;
+		all->par.mmap_map[5].size = SBUS_MMAP_EMPTY;
+		all->par.mmap_map[6].size = SBUS_MMAP_EMPTY;
+	}
+
+	all->par.physbase = 0;
+	for (i = 0; i < TCX_MMAP_ENTRIES; i++) {
+		int j;
+
+		switch (i) {
+		case 10:
+			j = 12;
+			break;
+
+		case 11: case 12:
+			j = i - 1;
+			break;
+
+		default:
+			j = i;
+			break;
+		};
+		all->par.mmap_map[i].poff = sdev->reg_addrs[j].phys_addr;
+	}
+
+	all->info.flags = FBINFO_DEFAULT;
+	all->info.fbops = &tcx_ops;
+#ifdef CONFIG_SPARC32
+	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(&sdev->resource[0], 0,
+				     all->par.fbsize, "tcx ram");
+	all->info.par = &all->par;
+
+	/* Initialize brooktree DAC. */
+	sbus_writel(0x04 << 24, &all->par.bt->addr);         /* color planes */
+	sbus_writel(0xff << 24, &all->par.bt->control);
+	sbus_writel(0x05 << 24, &all->par.bt->addr);
+	sbus_writel(0x00 << 24, &all->par.bt->control);
+	sbus_writel(0x06 << 24, &all->par.bt->addr);         /* overlay plane */
+	sbus_writel(0x73 << 24, &all->par.bt->control);
+	sbus_writel(0x07 << 24, &all->par.bt->addr);
+	sbus_writel(0x00 << 24, &all->par.bt->control);
+
+	tcx_reset(&all->info);
+
+	tcx_blank(0, &all->info);
+
+	if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
+		printk(KERN_ERR "tcx: Could not allocate color map.\n");
+		kfree(all);
+		return;
+	}
+
+	tcx_init_fix(&all->info, linebytes);
+
+	if (register_framebuffer(&all->info) < 0) {
+		printk(KERN_ERR "tcx: Could not register framebuffer.\n");
+		fb_dealloc_cmap(&all->info.cmap);
+		kfree(all);
+		return;
+	}
+
+	list_add(&all->list, &tcx_list);
+
+	printk("tcx: %s at %lx:%lx, %s\n",
+	       sdev->prom_name,
+	       (long) sdev->reg_addrs[0].which_io,
+	       (long) sdev->reg_addrs[0].phys_addr,
+	       all->par.lowdepth ? "8-bit only" : "24-bit depth");
+}
+
+int __init tcx_init(void)
+{
+	struct sbus_bus *sbus;
+	struct sbus_dev *sdev;
+
+	if (fb_get_options("tcxfb", NULL))
+		return -ENODEV;
+
+	for_all_sbusdev(sdev, sbus) {
+		if (!strcmp(sdev->prom_name, "tcx"))
+			tcx_init_one(sdev);
+	}
+
+	return 0;
+}
+
+void __exit tcx_exit(void)
+{
+	struct list_head *pos, *tmp;
+
+	list_for_each_safe(pos, tmp, &tcx_list) {
+		struct all_info *all = list_entry(pos, typeof(*all), list);
+
+		unregister_framebuffer(&all->info);
+		fb_dealloc_cmap(&all->info.cmap);
+		kfree(all);
+	}
+}
+
+int __init
+tcx_setup(char *arg)
+{
+	/* No cmdline options yet... */
+	return 0;
+}
+
+module_init(tcx_init);
+
+#ifdef MODULE
+module_exit(tcx_exit);
+#endif
+
+MODULE_DESCRIPTION("framebuffer driver for TCX chipsets");
+MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
+MODULE_LICENSE("GPL");