diff options
Diffstat (limited to 'drivers/video/tcx.c')
-rw-r--r-- | drivers/video/tcx.c | 224 |
1 files changed, 128 insertions, 96 deletions
diff --git a/drivers/video/tcx.c b/drivers/video/tcx.c index 95b9182..6990ab1 100644 --- a/drivers/video/tcx.c +++ b/drivers/video/tcx.c @@ -1,6 +1,6 @@ /* 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) @@ -19,8 +19,8 @@ #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" @@ -77,32 +77,32 @@ static struct fb_ops tcx_ops = { /* 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 @@ -112,24 +112,23 @@ struct tcx_par { 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; @@ -307,8 +306,7 @@ static int tcx_mmap(struct fb_info *info, struct vm_area_struct *vma) 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, @@ -350,48 +348,71 @@ tcx_init_fix(struct fb_info *info, int linebytes) 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 all_info *all) { - struct all_info *all; - int linebytes, i; + if (all->par.tec) + of_iounmap(all->par.tec, sizeof(struct tcx_tec)); + if (all->par.thc) + of_iounmap(all->par.thc, sizeof(struct tcx_thc)); + if (all->par.bt) + of_iounmap(all->par.bt, sizeof(struct bt_regs)); + if (all->par.cplane) + of_iounmap(all->par.cplane, all->par.fbsize * sizeof(u32)); + if (all->info.screen_base) + of_iounmap(all->info.screen_base, all->par.fbsize); +} - all = kmalloc(sizeof(*all), GFP_KERNEL); - if (!all) { - printk(KERN_ERR "tcx: Cannot allocate memory.\n"); - return; - } - memset(all, 0, sizeof(*all)); +static int __devinit tcx_init_one(struct of_device *op) +{ + struct device_node *dp = op->node; + struct all_info *all; + int linebytes, i, err; - INIT_LIST_HEAD(&all->list); + all = kzalloc(sizeof(*all), GFP_KERNEL); + if (!all) + return -ENOMEM; spin_lock_init(&all->par.lock); - all->par.sdev = sdev; - all->par.lowdepth = prom_getbool(sdev->prom_node, "tcx-8-bit"); + all->par.lowdepth = + (of_find_property(dp, "tcx-8-bit", NULL) != NULL); - sbusfb_fill_var(&all->info.var, sdev->prom_node, 8); + sbusfb_fill_var(&all->info.var, dp->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); + linebytes = of_getintprop_default(dp, "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"); + all->par.tec = of_ioremap(&op->resource[7], 0, + sizeof(struct tcx_tec), "tcx tec"); + all->par.thc = of_ioremap(&op->resource[9], 0, + sizeof(struct tcx_thc), "tcx thc"); + all->par.bt = of_ioremap(&op->resource[8], 0, + sizeof(struct bt_regs), "tcx dac"); + all->info.screen_base = of_ioremap(&op->resource[0], 0, + all->par.fbsize, "tcx ram"); + if (!all->par.tec || !all->par.thc || + !all->par.bt || !all->info.screen_base) { + tcx_unmap_regs(all); + kfree(all); + return -ENOMEM; + } + 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"); + all->par.cplane = of_ioremap(&op->resource[4], 0, + all->par.fbsize * sizeof(u32), + "tcx cplane"); + if (!all->par.cplane) { + tcx_unmap_regs(all); + kfree(all); + return -ENOMEM; + } } else { all->par.mmap_map[1].size = SBUS_MMAP_EMPTY; all->par.mmap_map[4].size = SBUS_MMAP_EMPTY; @@ -400,6 +421,8 @@ static void tcx_init_one(struct sbus_dev *sdev) } all->par.physbase = 0; + all->par.which_io = op->resource[0].flags & IORESOURCE_BITS; + for (i = 0; i < TCX_MMAP_ENTRIES; i++) { int j; @@ -416,18 +439,11 @@ static void tcx_init_one(struct sbus_dev *sdev) j = i; break; }; - all->par.mmap_map[i].poff = sdev->reg_addrs[j].phys_addr; + all->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; /* Initialize brooktree DAC. */ @@ -445,72 +461,88 @@ static void tcx_init_one(struct sbus_dev *sdev) 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"); + tcx_unmap_regs(all); kfree(all); - return; + return -ENOMEM; } fb_set_cmap(&all->info.cmap, &all->info); tcx_init_fix(&all->info, linebytes); - if (register_framebuffer(&all->info) < 0) { - printk(KERN_ERR "tcx: Could not register framebuffer.\n"); + err = register_framebuffer(&all->info); + if (err < 0) { fb_dealloc_cmap(&all->info.cmap); + tcx_unmap_regs(all); kfree(all); - return; + return err; } - list_add(&all->list, &tcx_list); + dev_set_drvdata(&op->dev, all); - 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, + printk("%s: TCX at %lx:%lx, %s\n", + dp->full_name, + all->par.which_io, + op->resource[0].start, all->par.lowdepth ? "8-bit only" : "24-bit depth"); + + return 0; } -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 *dev) +{ + struct all_info *all = dev_get_drvdata(&dev->dev); + + unregister_framebuffer(&all->info); + fb_dealloc_cmap(&all->info.cmap); + + tcx_unmap_regs(all); + + kfree(all); + + dev_set_drvdata(&dev->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"); |