diff options
Diffstat (limited to 'drivers/video/pmagb-b-fb.c')
| -rw-r--r-- | drivers/video/pmagb-b-fb.c | 98 |
1 files changed, 56 insertions, 42 deletions
diff --git a/drivers/video/pmagb-b-fb.c b/drivers/video/pmagb-b-fb.c index a06a064ad75..7a0ce7d5af6 100644 --- a/drivers/video/pmagb-b-fb.c +++ b/drivers/video/pmagb-b-fb.c @@ -11,7 +11,7 @@ * 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 * * 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 @@ -25,18 +25,16 @@ #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/pmagb-b-fb.h> struct pmagbbfb_par { - struct fb_info *next; volatile void __iomem *mmio; volatile void __iomem *smem; volatile u32 __iomem *sfb; @@ -47,8 +45,6 @@ struct pmagbbfb_par { }; -static struct fb_info *root_pmagbbfb_dev; - static struct fb_var_screeninfo pmagbbfb_defined __initdata = { .bits_per_pixel = 8, .red.length = 8, @@ -190,8 +186,9 @@ static void __init pmagbbfb_osc_setup(struct fb_info *info) 69197, 66000, 65000, 50350, 36000, 32000, 25175 }; struct pmagbbfb_par *par = info->par; + struct tc_bus *tbus = to_tc_dev(info->device)->bus; u32 count0 = 8, count1 = 8, counttc = 16 * 256 + 8; - u32 freq0, freq1, freqtc = get_tc_speed() / 250; + u32 freq0, freq1, freqtc = tc_get_speed(tbus) / 250; int i, j; gp0_write(par, 0); /* select Osc0 */ @@ -249,26 +246,21 @@ static void __init pmagbbfb_osc_setup(struct fb_info *info) }; -static int __init pmagbbfb_init_one(int slot) +static int __init pmagbbfb_probe(struct device *dev) { - char freq0[12], freq1[12]; + struct tc_dev *tdev = to_tc_dev(dev); + resource_size_t start, len; struct fb_info *info; struct pmagbbfb_par *par; - unsigned long base_addr; + char freq0[12], freq1[12]; u32 vid_base; - info = framebuffer_alloc(sizeof(struct pmagbbfb_par), NULL); + info = framebuffer_alloc(sizeof(struct pmagbbfb_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_pmagbbfb_dev; - root_pmagbbfb_dev = info; + dev_set_drvdata(dev, info); if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) goto err_alloc; @@ -278,16 +270,22 @@ static int __init pmagbbfb_init_one(int slot) info->var = pmagbbfb_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->sfb = par->mmio + PMAGB_B_SFB; par->dac = par->mmio + PMAGB_B_BT459; /* Frame buffer mapping setup. */ - info->fix.smem_start = base_addr + PMAGB_B_FBMEM; + info->fix.smem_start = start + PMAGB_B_FBMEM; par->smem = ioremap_nocache(info->fix.smem_start, info->fix.smem_len); if (!par->smem) goto err_mmio_map; @@ -302,13 +300,15 @@ static int __init pmagbbfb_init_one(int slot) if (register_framebuffer(info) < 0) goto err_smem_map; + get_device(dev); + snprintf(freq0, sizeof(freq0), "%u.%03uMHz", par->osc0 / 1000, par->osc0 % 1000); snprintf(freq1, sizeof(freq1), "%u.%03uMHz", par->osc1 / 1000, par->osc1 % 1000); - pr_info("fb%d: %s frame buffer device in slot %d\n", - info->node, info->fix.id, par->slot); + pr_info("fb%d: %s frame buffer device at %s\n", + info->node, info->fix.id, dev->bus_id); pr_info("fb%d: Osc0: %s, Osc1: %s, Osc%u selected\n", info->node, freq0, par->osc1 ? freq1 : "disabled", par->osc1 != 0); @@ -322,54 +322,68 @@ 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_pmagbbfb_dev = par->next; - release_tc_card(par->slot); framebuffer_release(info); return -ENXIO; } -static void __exit pmagbbfb_exit_one(void) +static int __exit pmagbbfb_remove(struct device *dev) { - struct fb_info *info = root_pmagbbfb_dev; + struct tc_dev *tdev = to_tc_dev(dev); + struct fb_info *info = dev_get_drvdata(dev); struct pmagbbfb_par *par = info->par; + resource_size_t start, len; + put_device(dev); unregister_framebuffer(info); iounmap(par->smem); iounmap(par->mmio); + start = tdev->resource.start; + len = tdev->resource.end - start + 1; + release_mem_region(start, len); fb_dealloc_cmap(&info->cmap); - root_pmagbbfb_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 pmagbbfb_tc_table[] = { + { "DEC ", "PMAGB-BA" }, + { } +}; +MODULE_DEVICE_TABLE(tc, pmagbbfb_tc_table); + +static struct tc_driver pmagbbfb_driver = { + .id_table = pmagbbfb_tc_table, + .driver = { + .name = "pmagbbfb", + .bus = &tc_bus_type, + .probe = pmagbbfb_probe, + .remove = __exit_p(pmagbbfb_remove), + }, +}; + static int __init pmagbbfb_init(void) { - int count = 0; - int slot; - +#ifndef MODULE if (fb_get_options("pmagbbfb", NULL)) return -ENXIO; - - while ((slot = search_tc_card("PMAGB-BA")) >= 0) { - if (pmagbbfb_init_one(slot) < 0) - break; - count++; - } - return (count > 0) ? 0 : -ENXIO; +#endif + return tc_register_driver(&pmagbbfb_driver); } static void __exit pmagbbfb_exit(void) { - while (root_pmagbbfb_dev) - pmagbbfb_exit_one(); + tc_unregister_driver(&pmagbbfb_driver); } |