/* tcx.c: TCX 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) 1996 Eddie C. Dost (ecd@skynet.be)
#include <linux/mm.h>
#include <asm/io.h>
-#include <asm/sbus.h>
-#include <asm/oplib.h>
+#include <asm/prom.h>
+#include <asm/of_device.h>
#include <asm/fbio.h>
#include "sbuslib.h"
/* The contents are unknown */
struct tcx_tec {
- volatile u32 tec_matrix;
- volatile u32 tec_clip;
- volatile u32 tec_vdc;
+ u32 tec_matrix;
+ u32 tec_clip;
+ u32 tec_vdc;
};
struct tcx_thc {
- volatile u32 thc_rev;
+ 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_hs; /* hsync timing */
+ u32 thc_hsdvs;
+ u32 thc_hd;
+ u32 thc_vs; /* vsync timing */
+ u32 thc_vd;
+ u32 thc_refresh;
+ 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 */
+ u32 thc_cursxy; /* cursor x,y position (16 bits each) */
+ u32 thc_cursmask[32]; /* cursor mask bits */
+ 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;
+ u32 addr;
+ u32 color_map;
+ u32 control;
+ u32 cursor;
};
#define TCX_MMAP_ENTRIES 14
struct bt_regs __iomem *bt;
struct tcx_thc __iomem *thc;
struct tcx_tec __iomem *tec;
- volatile u32 __iomem *cplane;
+ u32 __iomem *cplane;
u32 flags;
#define TCX_FLAG_BLANKED 0x00000001
unsigned long physbase;
+ unsigned long which_io;
unsigned long fbsize;
struct sbus_mmap_map mmap_map[TCX_MMAP_ENTRIES];
int lowdepth;
-
- struct sbus_dev *sdev;
};
/* 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;
+ u32 __iomem *p, *pend;
if (par->lowdepth)
return;
return sbusfb_mmap_helper(par->mmap_map,
par->physbase, par->fbsize,
- par->sdev->reg_addrs[0].which_io,
- vma);
+ par->which_io, vma);
}
static int tcx_ioctl(struct fb_info *info, unsigned int cmd,
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)
+static void tcx_unmap_regs(struct of_device *op, struct fb_info *info,
+ struct tcx_par *par)
{
- struct all_info *all;
- int linebytes, i;
+ if (par->tec)
+ of_iounmap(&op->resource[7],
+ par->tec, sizeof(struct tcx_tec));
+ if (par->thc)
+ of_iounmap(&op->resource[9],
+ par->thc, sizeof(struct tcx_thc));
+ if (par->bt)
+ of_iounmap(&op->resource[8],
+ par->bt, sizeof(struct bt_regs));
+ if (par->cplane)
+ of_iounmap(&op->resource[4],
+ par->cplane, par->fbsize * sizeof(u32));
+ if (info->screen_base)
+ of_iounmap(&op->resource[0],
+ info->screen_base, par->fbsize);
+}
- 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);
- all->info.var.red.length = 8;
- all->info.var.green.length = 8;
- all->info.var.blue.length = 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");
+static int __devinit tcx_init_one(struct of_device *op)
+{
+ struct device_node *dp = op->node;
+ struct fb_info *info;
+ struct tcx_par *par;
+ int linebytes, i, err;
+
+ info = framebuffer_alloc(sizeof(struct tcx_par), &op->dev);
+
+ err = -ENOMEM;
+ if (!info)
+ goto out_err;
+ par = info->par;
+
+ spin_lock_init(&par->lock);
+
+ par->lowdepth =
+ (of_find_property(dp, "tcx-8-bit", NULL) != NULL);
+
+ sbusfb_fill_var(&info->var, dp->node, 8);
+ info->var.red.length = 8;
+ info->var.green.length = 8;
+ info->var.blue.length = 8;
+
+ linebytes = of_getintprop_default(dp, "linebytes",
+ info->var.xres);
+ par->fbsize = PAGE_ALIGN(linebytes * info->var.yres);
+
+ par->tec = of_ioremap(&op->resource[7], 0,
+ sizeof(struct tcx_tec), "tcx tec");
+ par->thc = of_ioremap(&op->resource[9], 0,
+ sizeof(struct tcx_thc), "tcx thc");
+ par->bt = of_ioremap(&op->resource[8], 0,
+ sizeof(struct bt_regs), "tcx dac");
+ info->screen_base = of_ioremap(&op->resource[0], 0,
+ par->fbsize, "tcx ram");
+ if (!par->tec || !par->thc ||
+ !par->bt || !info->screen_base)
+ goto out_unmap_regs;
+
+ memcpy(&par->mmap_map, &__tcx_mmap_map, sizeof(par->mmap_map));
+ if (!par->lowdepth) {
+ par->cplane = of_ioremap(&op->resource[4], 0,
+ par->fbsize * sizeof(u32),
+ "tcx cplane");
+ if (!par->cplane)
+ goto out_unmap_regs;
} 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;
+ par->mmap_map[1].size = SBUS_MMAP_EMPTY;
+ par->mmap_map[4].size = SBUS_MMAP_EMPTY;
+ par->mmap_map[5].size = SBUS_MMAP_EMPTY;
+ par->mmap_map[6].size = SBUS_MMAP_EMPTY;
}
- all->par.physbase = 0;
+ par->physbase = op->resource[0].start;
+ par->which_io = op->resource[0].flags & IORESOURCE_BITS;
+
for (i = 0; i < TCX_MMAP_ENTRIES; i++) {
int j;
j = i;
break;
};
- all->par.mmap_map[i].poff = sdev->reg_addrs[j].phys_addr;
+ par->mmap_map[i].poff = op->resource[j].start;
}
- 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;
+ info->flags = FBINFO_DEFAULT;
+ info->fbops = &tcx_ops;
/* 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(FB_BLANK_UNBLANK, &all->info);
-
- if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
- printk(KERN_ERR "tcx: Could not allocate color map.\n");
- kfree(all);
- return;
- }
+ sbus_writel(0x04 << 24, &par->bt->addr); /* color planes */
+ sbus_writel(0xff << 24, &par->bt->control);
+ sbus_writel(0x05 << 24, &par->bt->addr);
+ sbus_writel(0x00 << 24, &par->bt->control);
+ sbus_writel(0x06 << 24, &par->bt->addr); /* overlay plane */
+ sbus_writel(0x73 << 24, &par->bt->control);
+ sbus_writel(0x07 << 24, &par->bt->addr);
+ sbus_writel(0x00 << 24, &par->bt->control);
+
+ tcx_reset(info);
- fb_set_cmap(&all->info.cmap, &all->info);
- tcx_init_fix(&all->info, linebytes);
+ tcx_blank(FB_BLANK_UNBLANK, info);
- if (register_framebuffer(&all->info) < 0) {
- printk(KERN_ERR "tcx: Could not register framebuffer.\n");
- fb_dealloc_cmap(&all->info.cmap);
- kfree(all);
- return;
- }
+ if (fb_alloc_cmap(&info->cmap, 256, 0))
+ goto out_unmap_regs;
+
+ fb_set_cmap(&info->cmap, info);
+ tcx_init_fix(info, linebytes);
+
+ err = register_framebuffer(info);
+ if (err < 0)
+ goto out_dealloc_cmap;
+
+ dev_set_drvdata(&op->dev, info);
- list_add(&all->list, &tcx_list);
+ printk("%s: TCX at %lx:%lx, %s\n",
+ dp->full_name,
+ par->which_io,
+ par->physbase,
+ par->lowdepth ? "8-bit only" : "24-bit depth");
- 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");
+ return 0;
+
+out_dealloc_cmap:
+ fb_dealloc_cmap(&info->cmap);
+
+out_unmap_regs:
+ tcx_unmap_regs(op, info, par);
+
+out_err:
+ return err;
}
-int __init tcx_init(void)
+static int __devinit tcx_probe(struct of_device *dev, const struct of_device_id *match)
{
- struct sbus_bus *sbus;
- struct sbus_dev *sdev;
+ struct of_device *op = to_of_device(&dev->dev);
- if (fb_get_options("tcxfb", NULL))
- return -ENODEV;
+ return tcx_init_one(op);
+}
- for_all_sbusdev(sdev, sbus) {
- if (!strcmp(sdev->prom_name, "SUNW,tcx"))
- tcx_init_one(sdev);
- }
+static int __devexit tcx_remove(struct of_device *op)
+{
+ struct fb_info *info = dev_get_drvdata(&op->dev);
+ struct tcx_par *par = info->par;
+
+ unregister_framebuffer(info);
+ fb_dealloc_cmap(&info->cmap);
+
+ tcx_unmap_regs(op, info, par);
+
+ framebuffer_release(info);
+
+ dev_set_drvdata(&op->dev, NULL);
return 0;
}
-void __exit tcx_exit(void)
-{
- struct list_head *pos, *tmp;
+static struct of_device_id tcx_match[] = {
+ {
+ .name = "SUNW,tcx",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tcx_match);
- list_for_each_safe(pos, tmp, &tcx_list) {
- struct all_info *all = list_entry(pos, typeof(*all), list);
+static struct of_platform_driver tcx_driver = {
+ .name = "tcx",
+ .match_table = tcx_match,
+ .probe = tcx_probe,
+ .remove = __devexit_p(tcx_remove),
+};
- unregister_framebuffer(&all->info);
- fb_dealloc_cmap(&all->info.cmap);
- kfree(all);
- }
+int __init tcx_init(void)
+{
+ if (fb_get_options("tcxfb", NULL))
+ return -ENODEV;
+
+ return of_register_driver(&tcx_driver, &of_bus_type);
}
-int __init
-tcx_setup(char *arg)
+void __exit tcx_exit(void)
{
- /* No cmdline options yet... */
- return 0;
+ of_unregister_driver(&tcx_driver);
}
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_AUTHOR("David S. Miller <davem@davemloft.net>");
+MODULE_VERSION("2.0");
MODULE_LICENSE("GPL");
Code Review / linux-2.6.git / blobdiff