/* bw2.c: BWTWO frame buffer driver
*
- * Copyright (C) 2003 David S. Miller (davem@redhat.com)
+ * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
* 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)
#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 <linux/of_device.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"
/*
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 *);
+static int bw2_mmap(struct fb_info *, struct vm_area_struct *);
+static int bw2_ioctl(struct fb_info *, unsigned int, unsigned long);
/*
* Frame buffer operations
#define BWTWO_REGISTER_OFFSET 0x400000
struct bt_regs {
- volatile u32 addr;
- volatile u32 color_map;
- volatile u32 control;
- volatile u32 cursor;
+ u32 addr;
+ u32 color_map;
+ u32 control;
+ 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;
+ u8 control;
+ u8 status;
+ u8 cursor_start;
+ u8 cursor_end;
+ u8 h_blank_start;
+ u8 h_blank_end;
+ u8 h_sync_start;
+ u8 h_sync_end;
+ u8 comp_sync_end;
+ u8 v_blank_start_high;
+ u8 v_blank_start_low;
+ u8 v_blank_end;
+ u8 v_sync_start;
+ u8 v_sync_end;
+ u8 xfer_holdoff_start;
+ u8 xfer_holdoff_end;
};
/* Status Register Constants */
u32 flags;
#define BW2_FLAG_BLANKED 0x00000001
- unsigned long physbase;
- unsigned long fbsize;
-
- struct sbus_dev *sdev;
- struct list_head list;
+ unsigned long which_io;
};
/**
{ .size = 0 }
};
-static int bw2_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
+static int bw2_mmap(struct fb_info *info, 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),
+ info->fix.smem_start, info->fix.smem_len,
+ par->which_io,
vma);
}
-static int bw2_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg, struct fb_info *info)
+static int bw2_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
{
- struct bw2_par *par = (struct bw2_par *) info->par;
-
return sbusfb_ioctl_helper(cmd, arg, info,
- FBTYPE_SUN2BW, 1, par->fbsize);
+ FBTYPE_SUN2BW, 1, info->fix.smem_len);
}
/*
* Initialisation
*/
-static void
-bw2_init_fix(struct fb_info *info, int linebytes)
+static void __devinit bw2_init_fix(struct fb_info *info, int linebytes)
{
strlcpy(info->fix.id, "bwtwo", sizeof(info->fix.id));
info->fix.accel = FB_ACCEL_SUN_BWTWO;
}
-static u8 bw2regs_1600[] __initdata = {
+static u8 bw2regs_1600[] __devinitdata = {
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 = {
+static u8 bw2regs_ecl[] __devinitdata = {
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 = {
+static u8 bw2regs_analog[] __devinitdata = {
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 = {
+static u8 bw2regs_76hz[] __devinitdata = {
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 = {
+static u8 bw2regs_66hz[] __devinitdata = {
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)
+static int __devinit bw2_do_default_mode(struct bw2_par *par,
+ struct fb_info *info,
+ int *linebytes)
{
u8 status, mon;
u8 *p;
break;
case BWTWO_SR_ID_NOCONN:
- return;
+ return 0;
default:
- prom_printf("bw2: can't handle SR %02x\n",
- status);
- prom_halt();
+ printk(KERN_ERR "bw2: can't handle SR %02x\n",
+ status);
+ return -EINVAL;
}
for ( ; *p; p += 2) {
u8 __iomem *regp = &((u8 __iomem *)par->regs)[p[0]];
sbus_writeb(p[1], regp);
}
+ return 0;
}
-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)
+static int __devinit bw2_probe(struct of_device *op, const struct of_device_id *match)
{
- struct all_info *all;
- struct resource *resp;
-#ifdef CONFIG_SUN4
- struct resource res;
-#endif
- int linebytes;
+ struct device_node *dp = op->node;
+ struct fb_info *info;
+ struct bw2_par *par;
+ int linebytes, err;
- 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;
+ info = framebuffer_alloc(sizeof(struct bw2_par), &op->dev);
- all->par.regs = sbus_ioremap(resp, BWTWO_REGISTER_OFFSET,
- sizeof(struct bw2_regs), "bw2 regs");
+ err = -ENOMEM;
+ if (!info)
+ goto out_err;
+ par = info->par;
- if (sdev && !prom_getbool(sdev->prom_node, "width"))
- bw2_do_default_mode(&all->par, &all->info, &linebytes);
+ spin_lock_init(&par->lock);
- all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
+ info->fix.smem_start = op->resource[0].start;
+ par->which_io = op->resource[0].flags & IORESOURCE_BITS;
- 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;
+ sbusfb_fill_var(&info->var, dp, 1);
+ linebytes = of_getintprop_default(dp, "linebytes",
+ info->var.xres);
- bw2_blank(0, &all->info);
+ info->var.red.length = info->var.green.length =
+ info->var.blue.length = info->var.bits_per_pixel;
+ info->var.red.offset = info->var.green.offset =
+ info->var.blue.offset = 0;
- bw2_init_fix(&all->info, linebytes);
+ par->regs = of_ioremap(&op->resource[0], BWTWO_REGISTER_OFFSET,
+ sizeof(struct bw2_regs), "bw2 regs");
+ if (!par->regs)
+ goto out_release_fb;
- if (register_framebuffer(&all->info) < 0) {
- printk(KERN_ERR "bw2: Could not register framebuffer.\n");
- kfree(all);
- return;
+ if (!of_find_property(dp, "width", NULL)) {
+ err = bw2_do_default_mode(par, info, &linebytes);
+ if (err)
+ goto out_unmap_regs;
}
- list_add(&all->list, &bw2_list);
+ info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
+
+ info->flags = FBINFO_DEFAULT;
+ info->fbops = &bw2_ops;
+
+ info->screen_base = of_ioremap(&op->resource[0], 0,
+ info->fix.smem_len, "bw2 ram");
+ if (!info->screen_base)
+ goto out_unmap_regs;
+
+ bw2_blank(FB_BLANK_UNBLANK, info);
+
+ bw2_init_fix(info, linebytes);
+
+ err = register_framebuffer(info);
+ if (err < 0)
+ goto out_unmap_screen;
+
+ dev_set_drvdata(&op->dev, info);
+
+ printk(KERN_INFO "%s: bwtwo at %lx:%lx\n",
+ dp->full_name, par->which_io, info->fix.smem_start);
+
+ return 0;
+
+out_unmap_screen:
+ of_iounmap(&op->resource[0], info->screen_base, info->fix.smem_len);
+
+out_unmap_regs:
+ of_iounmap(&op->resource[0], par->regs, sizeof(struct bw2_regs));
+
+out_release_fb:
+ framebuffer_release(info);
- printk("bw2: bwtwo at %lx:%lx\n",
- (long) (sdev ? sdev->reg_addrs[0].which_io : 0),
- (long) all->par.physbase);
+out_err:
+ return err;
}
-int __init bw2_init(void)
+static int __devexit bw2_remove(struct of_device *op)
{
- struct sbus_bus *sbus;
- struct sbus_dev *sdev;
+ struct fb_info *info = dev_get_drvdata(&op->dev);
+ struct bw2_par *par = info->par;
- if (fb_get_options("bw2fb", NULL))
- return -ENODEV;
+ unregister_framebuffer(info);
-#ifdef CONFIG_SUN4
- bw2_init_one(NULL);
-#endif
- for_all_sbusdev(sdev, sbus) {
- if (!strcmp(sdev->prom_name, "bwtwo"))
- bw2_init_one(sdev);
- }
+ of_iounmap(&op->resource[0], par->regs, sizeof(struct bw2_regs));
+ of_iounmap(&op->resource[0], info->screen_base, info->fix.smem_len);
+
+ framebuffer_release(info);
+
+ dev_set_drvdata(&op->dev, NULL);
return 0;
}
-void __exit bw2_exit(void)
-{
- struct list_head *pos, *tmp;
+static const struct of_device_id bw2_match[] = {
+ {
+ .name = "bwtwo",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, bw2_match);
- list_for_each_safe(pos, tmp, &bw2_list) {
- struct all_info *all = list_entry(pos, typeof(*all), list);
+static struct of_platform_driver bw2_driver = {
+ .driver = {
+ .name = "bw2",
+ .owner = THIS_MODULE,
+ .of_match_table = bw2_match,
+ },
+ .probe = bw2_probe,
+ .remove = __devexit_p(bw2_remove),
+};
- unregister_framebuffer(&all->info);
- kfree(all);
- }
+static int __init bw2_init(void)
+{
+ if (fb_get_options("bw2fb", NULL))
+ return -ENODEV;
+
+ return of_register_driver(&bw2_driver, &of_bus_type);
}
-int __init
-bw2_setup(char *arg)
+static void __exit bw2_exit(void)
{
- /* No cmdline options yet... */
- return 0;
+ of_unregister_driver(&bw2_driver);
}
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_AUTHOR("David S. Miller <davem@davemloft.net>");
+MODULE_VERSION("2.0");
MODULE_LICENSE("GPL");
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