diff options
Diffstat (limited to 'drivers/video/pmag-ba-fb.c')
| -rw-r--r-- | drivers/video/pmag-ba-fb.c | 95 |
1 files changed, 54 insertions, 41 deletions
diff --git a/drivers/video/pmag-ba-fb.c b/drivers/video/pmag-ba-fb.c index f5361cd..264d372 100644 --- a/drivers/video/pmag-ba-fb.c +++ b/drivers/video/pmag-ba-fb.c @@ -15,7 +15,8 @@ * Michael Engel <engel@unix-ag.org>, * Karsten Merker <merker@linuxtag.org> and * Harald Koerfgen. - * Copyright (c) 2005 Maciej W. Rozycki + * Copyright (c) 2005, 2006 Maciej W. Rozycki + * Copyright (c) 2005 James Simmons * * This file is subject to the terms and conditions of the GNU General * Public License. See the file COPYING in the main directory of this @@ -28,26 +29,21 @@ #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> +#include <linux/tc.h> #include <linux/types.h> #include <asm/io.h> #include <asm/system.h> -#include <asm/dec/tc.h> - #include <video/pmag-ba-fb.h> struct pmagbafb_par { - struct fb_info *next; volatile void __iomem *mmio; volatile u32 __iomem *dac; - int slot; }; -static struct fb_info *root_pmagbafb_dev; - static struct fb_var_screeninfo pmagbafb_defined __initdata = { .xres = 1024, .yres = 864, @@ -145,24 +141,19 @@ static void __init pmagbafb_erase_cursor(struct fb_info *info) } -static int __init pmagbafb_init_one(int slot) +static int __init pmagbafb_probe(struct device *dev) { + struct tc_dev *tdev = to_tc_dev(dev); + resource_size_t start, len; struct fb_info *info; struct pmagbafb_par *par; - unsigned long base_addr; - info = framebuffer_alloc(sizeof(struct pmagbafb_par), NULL); + info = framebuffer_alloc(sizeof(struct pmagbafb_par), dev); if (!info) return -ENOMEM; par = info->par; - par->slot = slot; - claim_tc_card(par->slot); - - base_addr = get_tc_base_addr(par->slot); - - par->next = root_pmagbafb_dev; - root_pmagbafb_dev = info; + dev_set_drvdata(dev, info); if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) goto err_alloc; @@ -172,15 +163,21 @@ static int __init pmagbafb_init_one(int slot) info->var = pmagbafb_defined; info->flags = FBINFO_DEFAULT; + /* Request the I/O MEM resource. */ + start = tdev->resource.start; + len = tdev->resource.end - start + 1; + if (!request_mem_region(start, len, dev->bus_id)) + goto err_cmap; + /* MMIO mapping setup. */ - info->fix.mmio_start = base_addr; + info->fix.mmio_start = start; par->mmio = ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len); if (!par->mmio) - goto err_cmap; + goto err_resource; par->dac = par->mmio + PMAG_BA_BT459; /* Frame buffer mapping setup. */ - info->fix.smem_start = base_addr + PMAG_BA_FBMEM; + info->fix.smem_start = start + PMAG_BA_FBMEM; info->screen_base = ioremap_nocache(info->fix.smem_start, info->fix.smem_len); if (!info->screen_base) @@ -192,8 +189,10 @@ static int __init pmagbafb_init_one(int slot) if (register_framebuffer(info) < 0) goto err_smem_map; - pr_info("fb%d: %s frame buffer device in slot %d\n", - info->node, info->fix.id, par->slot); + get_device(dev); + + pr_info("fb%d: %s frame buffer device at %s\n", + info->node, info->fix.id, dev->bus_id); return 0; @@ -204,54 +203,68 @@ err_smem_map: err_mmio_map: iounmap(par->mmio); +err_resource: + release_mem_region(start, len); + err_cmap: fb_dealloc_cmap(&info->cmap); err_alloc: - root_pmagbafb_dev = par->next; - release_tc_card(par->slot); framebuffer_release(info); return -ENXIO; } -static void __exit pmagbafb_exit_one(void) +static int __exit pmagbafb_remove(struct device *dev) { - struct fb_info *info = root_pmagbafb_dev; + struct tc_dev *tdev = to_tc_dev(dev); + struct fb_info *info = dev_get_drvdata(dev); struct pmagbafb_par *par = info->par; + resource_size_t start, len; + put_device(dev); unregister_framebuffer(info); iounmap(info->screen_base); iounmap(par->mmio); + start = tdev->resource.start; + len = tdev->resource.end - start + 1; + release_mem_region(start, len); fb_dealloc_cmap(&info->cmap); - root_pmagbafb_dev = par->next; - release_tc_card(par->slot); framebuffer_release(info); + return 0; } /* - * Initialise the framebuffer. + * Initialize the framebuffer. */ +static const struct tc_device_id pmagbafb_tc_table[] = { + { "DEC ", "PMAG-BA " }, + { } +}; +MODULE_DEVICE_TABLE(tc, pmagbafb_tc_table); + +static struct tc_driver pmagbafb_driver = { + .id_table = pmagbafb_tc_table, + .driver = { + .name = "pmagbafb", + .bus = &tc_bus_type, + .probe = pmagbafb_probe, + .remove = __exit_p(pmagbafb_remove), + }, +}; + static int __init pmagbafb_init(void) { - int count = 0; - int slot; - +#ifndef MODULE if (fb_get_options("pmagbafb", NULL)) return -ENXIO; - - while ((slot = search_tc_card("PMAG-BA")) >= 0) { - if (pmagbafb_init_one(slot) < 0) - break; - count++; - } - return (count > 0) ? 0 : -ENXIO; +#endif + return tc_register_driver(&pmagbafb_driver); } static void __exit pmagbafb_exit(void) { - while (root_pmagbafb_dev) - pmagbafb_exit_one(); + tc_unregister_driver(&pmagbafb_driver); } |