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, 379 insertions, 0 deletions

diff --git a/drivers/video/p9100.c b/drivers/video/p9100.c
new file mode 100644
index 00000000000..7808a01493a
--- /dev/null
+++ b/drivers/video/p9100.c
@@ -0,0 +1,379 @@
+/* p9100.c: P9100 frame buffer driver
+ *
+ * Copyright (C) 2003 David S. Miller (davem@redhat.com)
+ * Copyright 1999 Derrick J Brashear (shadow@dementia.org)
+ *
+ * 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 p9100_setcolreg(unsigned, unsigned, unsigned, unsigned,
+			   unsigned, struct fb_info *);
+static int p9100_blank(int, struct fb_info *);
+
+static int p9100_mmap(struct fb_info *, struct file *, struct vm_area_struct *);
+static int p9100_ioctl(struct inode *, struct file *, unsigned int,
+		       unsigned long, struct fb_info *);
+
+/*
+ *  Frame buffer operations
+ */
+
+static struct fb_ops p9100_ops = {
+	.owner			= THIS_MODULE,
+	.fb_setcolreg		= p9100_setcolreg,
+	.fb_blank		= p9100_blank,
+	.fb_fillrect		= cfb_fillrect,
+	.fb_copyarea		= cfb_copyarea,
+	.fb_imageblit		= cfb_imageblit,
+	.fb_mmap		= p9100_mmap,
+	.fb_ioctl		= p9100_ioctl,
+	.fb_cursor		= soft_cursor,
+};
+
+/* P9100 control registers */
+#define P9100_SYSCTL_OFF	0x0UL
+#define P9100_VIDEOCTL_OFF	0x100UL
+#define P9100_VRAMCTL_OFF 	0x180UL
+#define P9100_RAMDAC_OFF 	0x200UL
+#define P9100_VIDEOCOPROC_OFF 	0x400UL
+
+/* P9100 command registers */
+#define P9100_CMD_OFF 0x0UL
+
+/* P9100 framebuffer memory */
+#define P9100_FB_OFF 0x0UL
+
+/* 3 bits: 2=8bpp 3=16bpp 5=32bpp 7=24bpp */
+#define SYS_CONFIG_PIXELSIZE_SHIFT 26 
+
+#define SCREENPAINT_TIMECTL1_ENABLE_VIDEO 0x20 /* 0 = off, 1 = on */
+
+struct p9100_regs {
+	/* Registers for the system control */
+	volatile u32 sys_base;
+	volatile u32 sys_config;
+	volatile u32 sys_intr;
+	volatile u32 sys_int_ena;
+	volatile u32 sys_alt_rd;
+	volatile u32 sys_alt_wr;
+	volatile u32 sys_xxx[58];
+
+	/* Registers for the video control */
+	volatile u32 vid_base;
+	volatile u32 vid_hcnt;
+	volatile u32 vid_htotal;
+	volatile u32 vid_hsync_rise;
+	volatile u32 vid_hblank_rise;
+	volatile u32 vid_hblank_fall;
+	volatile u32 vid_hcnt_preload;
+	volatile u32 vid_vcnt;
+	volatile u32 vid_vlen;
+	volatile u32 vid_vsync_rise;
+	volatile u32 vid_vblank_rise;
+	volatile u32 vid_vblank_fall;
+	volatile u32 vid_vcnt_preload;
+	volatile u32 vid_screenpaint_addr;
+	volatile u32 vid_screenpaint_timectl1;
+	volatile u32 vid_screenpaint_qsfcnt;
+	volatile u32 vid_screenpaint_timectl2;
+	volatile u32 vid_xxx[15];
+
+	/* Registers for the video control */
+	volatile u32 vram_base;
+	volatile u32 vram_memcfg;
+	volatile u32 vram_refresh_pd;
+	volatile u32 vram_refresh_cnt;
+	volatile u32 vram_raslo_max;
+	volatile u32 vram_raslo_cur;
+	volatile u32 pwrup_cfg;
+	volatile u32 vram_xxx[25];
+
+	/* Registers for IBM RGB528 Palette */
+	volatile u32 ramdac_cmap_wridx; 
+	volatile u32 ramdac_palette_data;
+	volatile u32 ramdac_pixel_mask;
+	volatile u32 ramdac_palette_rdaddr;
+	volatile u32 ramdac_idx_lo;
+	volatile u32 ramdac_idx_hi;
+	volatile u32 ramdac_idx_data;
+	volatile u32 ramdac_idx_ctl;
+	volatile u32 ramdac_xxx[1784];
+};
+
+struct p9100_cmd_parameng {
+	volatile u32 parameng_status;
+	volatile u32 parameng_bltcmd;
+	volatile u32 parameng_quadcmd;
+};
+
+struct p9100_par {
+	spinlock_t		lock;
+	struct p9100_regs	__iomem *regs;
+
+	u32			flags;
+#define P9100_FLAG_BLANKED	0x00000001
+
+	unsigned long		physbase;
+	unsigned long		fbsize;
+
+	struct sbus_dev		*sdev;
+	struct list_head	list;
+};
+
+/**
+ *      p9100_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 p9100_setcolreg(unsigned regno,
+			   unsigned red, unsigned green, unsigned blue,
+			   unsigned transp, struct fb_info *info)
+{
+	struct p9100_par *par = (struct p9100_par *) info->par;
+	struct p9100_regs __iomem *regs = par->regs;
+	unsigned long flags;
+
+	if (regno >= 256)
+		return 1;
+
+	red >>= 8;
+	green >>= 8;
+	blue >>= 8;
+
+	spin_lock_irqsave(&par->lock, flags);
+
+	sbus_writel((regno << 16), &regs->ramdac_cmap_wridx);
+	sbus_writel((red << 16), &regs->ramdac_palette_data);
+	sbus_writel((green << 16), &regs->ramdac_palette_data);
+	sbus_writel((blue << 16), &regs->ramdac_palette_data);
+
+	spin_unlock_irqrestore(&par->lock, flags);
+
+	return 0;
+}
+
+/**
+ *      p9100_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
+p9100_blank(int blank, struct fb_info *info)
+{
+	struct p9100_par *par = (struct p9100_par *) info->par;
+	struct p9100_regs __iomem *regs = par->regs;
+	unsigned long flags;
+	u32 val;
+
+	spin_lock_irqsave(&par->lock, flags);
+
+	switch (blank) {
+	case FB_BLANK_UNBLANK: /* Unblanking */
+		val = sbus_readl(&regs->vid_screenpaint_timectl1);
+		val |= SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
+		sbus_writel(val, &regs->vid_screenpaint_timectl1);
+		par->flags &= ~P9100_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_readl(&regs->vid_screenpaint_timectl1);
+		val &= ~SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
+		sbus_writel(val, &regs->vid_screenpaint_timectl1);
+		par->flags |= P9100_FLAG_BLANKED;
+		break;
+	}
+
+	spin_unlock_irqrestore(&par->lock, flags);
+
+	return 0;
+}
+
+static struct sbus_mmap_map p9100_mmap_map[] = {
+	{ CG3_MMAP_OFFSET,	0,		SBUS_MMAP_FBSIZE(1) },
+	{ 0,			0,		0		    }
+};
+
+static int p9100_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
+{
+	struct p9100_par *par = (struct p9100_par *)info->par;
+
+	return sbusfb_mmap_helper(p9100_mmap_map,
+				  par->physbase, par->fbsize,
+				  par->sdev->reg_addrs[0].which_io,
+				  vma);
+}
+
+static int p9100_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+		       unsigned long arg, struct fb_info *info)
+{
+	struct p9100_par *par = (struct p9100_par *) info->par;
+
+	/* Make it look like a cg3. */
+	return sbusfb_ioctl_helper(cmd, arg, info,
+				   FBTYPE_SUN3COLOR, 8, par->fbsize);
+}
+
+/*
+ *  Initialisation
+ */
+
+static void
+p9100_init_fix(struct fb_info *info, int linebytes)
+{
+	struct p9100_par *par = (struct p9100_par *)info->par;
+
+	strlcpy(info->fix.id, par->sdev->prom_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_CGTHREE;
+}
+
+struct all_info {
+	struct fb_info info;
+	struct p9100_par par;
+	struct list_head list;
+};
+static LIST_HEAD(p9100_list);
+
+static void p9100_init_one(struct sbus_dev *sdev)
+{
+	struct all_info *all;
+	int linebytes;
+
+	all = kmalloc(sizeof(*all), GFP_KERNEL);
+	if (!all) {
+		printk(KERN_ERR "p9100: 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;
+
+	/* This is the framebuffer and the only resource apps can mmap.  */
+	all->par.physbase = sdev->reg_addrs[2].phys_addr;
+
+	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.regs = sbus_ioremap(&sdev->resource[0], 0,
+			     sizeof(struct p9100_regs), "p9100 regs");
+
+	all->info.flags = FBINFO_DEFAULT;
+	all->info.fbops = &p9100_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[2], 0,
+				     all->par.fbsize, "p9100 ram");
+	all->info.par = &all->par;
+
+	p9100_blank(0, &all->info);
+
+	if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
+		printk(KERN_ERR "p9100: Could not allocate color map.\n");
+		kfree(all);
+		return;
+	}
+
+	p9100_init_fix(&all->info, linebytes);
+
+	if (register_framebuffer(&all->info) < 0) {
+		printk(KERN_ERR "p9100: Could not register framebuffer.\n");
+		fb_dealloc_cmap(&all->info.cmap);
+		kfree(all);
+		return;
+	}
+
+	list_add(&all->list, &p9100_list);
+
+	printk("p9100: %s at %lx:%lx\n",
+	       sdev->prom_name,
+	       (long) sdev->reg_addrs[0].which_io,
+	       (long) sdev->reg_addrs[0].phys_addr);
+}
+
+int __init p9100_init(void)
+{
+	struct sbus_bus *sbus;
+	struct sbus_dev *sdev;
+
+	if (fb_get_options("p9100fb", NULL))
+		return -ENODEV;
+
+	for_all_sbusdev(sdev, sbus) {
+		if (!strcmp(sdev->prom_name, "p9100"))
+			p9100_init_one(sdev);
+	}
+
+	return 0;
+}
+
+void __exit p9100_exit(void)
+{
+	struct list_head *pos, *tmp;
+
+	list_for_each_safe(pos, tmp, &p9100_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
+p9100_setup(char *arg)
+{
+	/* No cmdline options yet... */
+	return 0;
+}
+
+module_init(p9100_init);
+
+#ifdef MODULE
+module_exit(p9100_exit);
+#endif
+
+MODULE_DESCRIPTION("framebuffer driver for P9100 chipsets");
+MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
+MODULE_LICENSE("GPL");