[TC] pmagb-b-fb: Convert to the driver model
This is a set of changes to convert the driver to the driver model. As a side-effect the driver now supports building as a module. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: James Simmons <jsimmons@infradead.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Maciej W. Rozycki
Ralf Baechle
Родитель
4df4db5c6c
Коммит
9084b0058e
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@ -1454,8 +1454,8 @@ config FB_PMAG_BA
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used mainly in the MIPS-based DECstation series.
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config FB_PMAGB_B
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bool "PMAGB-B TURBOchannel framebuffer support"
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depends on (FB = y) && TC
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tristate "PMAGB-B TURBOchannel framebuffer support"
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depends on TC
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select FB_CFB_FILLRECT
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select FB_CFB_COPYAREA
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select FB_CFB_IMAGEBLIT
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@ -11,7 +11,7 @@
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* Michael Engel <engel@unix-ag.org>,
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* Karsten Merker <merker@linuxtag.org> and
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* Harald Koerfgen.
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* Copyright (c) 2005 Maciej W. Rozycki
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* Copyright (c) 2005, 2006 Maciej W. Rozycki
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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@ -25,18 +25,16 @@
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/tc.h>
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#include <linux/types.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include <asm/dec/tc.h>
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#include <video/pmagb-b-fb.h>
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struct pmagbbfb_par {
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struct fb_info *next;
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volatile void __iomem *mmio;
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volatile void __iomem *smem;
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volatile u32 __iomem *sfb;
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@ -47,8 +45,6 @@ struct pmagbbfb_par {
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};
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static struct fb_info *root_pmagbbfb_dev;
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static struct fb_var_screeninfo pmagbbfb_defined __initdata = {
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.bits_per_pixel = 8,
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.red.length = 8,
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@ -190,8 +186,9 @@ static void __init pmagbbfb_osc_setup(struct fb_info *info)
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69197, 66000, 65000, 50350, 36000, 32000, 25175
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};
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struct pmagbbfb_par *par = info->par;
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struct tc_bus *tbus = to_tc_dev(info->device)->bus;
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u32 count0 = 8, count1 = 8, counttc = 16 * 256 + 8;
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u32 freq0, freq1, freqtc = get_tc_speed() / 250;
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u32 freq0, freq1, freqtc = tc_get_speed(tbus) / 250;
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int i, j;
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gp0_write(par, 0); /* select Osc0 */
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@ -249,26 +246,21 @@ static void __init pmagbbfb_osc_setup(struct fb_info *info)
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};
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static int __init pmagbbfb_init_one(int slot)
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static int __init pmagbbfb_probe(struct device *dev)
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{
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char freq0[12], freq1[12];
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struct tc_dev *tdev = to_tc_dev(dev);
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resource_size_t start, len;
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struct fb_info *info;
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struct pmagbbfb_par *par;
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unsigned long base_addr;
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char freq0[12], freq1[12];
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u32 vid_base;
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info = framebuffer_alloc(sizeof(struct pmagbbfb_par), NULL);
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info = framebuffer_alloc(sizeof(struct pmagbbfb_par), dev);
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if (!info)
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return -ENOMEM;
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par = info->par;
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par->slot = slot;
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claim_tc_card(par->slot);
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base_addr = get_tc_base_addr(par->slot);
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par->next = root_pmagbbfb_dev;
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root_pmagbbfb_dev = info;
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dev_set_drvdata(dev, info);
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if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
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goto err_alloc;
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@ -278,16 +270,22 @@ static int __init pmagbbfb_init_one(int slot)
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info->var = pmagbbfb_defined;
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info->flags = FBINFO_DEFAULT;
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/* Request the I/O MEM resource. */
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start = tdev->resource.start;
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len = tdev->resource.end - start + 1;
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if (!request_mem_region(start, len, dev->bus_id))
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goto err_cmap;
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/* MMIO mapping setup. */
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info->fix.mmio_start = base_addr;
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info->fix.mmio_start = start;
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par->mmio = ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len);
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if (!par->mmio)
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goto err_cmap;
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goto err_resource;
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par->sfb = par->mmio + PMAGB_B_SFB;
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par->dac = par->mmio + PMAGB_B_BT459;
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/* Frame buffer mapping setup. */
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info->fix.smem_start = base_addr + PMAGB_B_FBMEM;
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info->fix.smem_start = start + PMAGB_B_FBMEM;
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par->smem = ioremap_nocache(info->fix.smem_start, info->fix.smem_len);
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if (!par->smem)
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goto err_mmio_map;
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@ -302,13 +300,15 @@ static int __init pmagbbfb_init_one(int slot)
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if (register_framebuffer(info) < 0)
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goto err_smem_map;
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get_device(dev);
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snprintf(freq0, sizeof(freq0), "%u.%03uMHz",
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par->osc0 / 1000, par->osc0 % 1000);
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snprintf(freq1, sizeof(freq1), "%u.%03uMHz",
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par->osc1 / 1000, par->osc1 % 1000);
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pr_info("fb%d: %s frame buffer device in slot %d\n",
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info->node, info->fix.id, par->slot);
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pr_info("fb%d: %s frame buffer device at %s\n",
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info->node, info->fix.id, dev->bus_id);
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pr_info("fb%d: Osc0: %s, Osc1: %s, Osc%u selected\n",
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info->node, freq0, par->osc1 ? freq1 : "disabled",
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par->osc1 != 0);
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@ -322,54 +322,68 @@ err_smem_map:
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err_mmio_map:
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iounmap(par->mmio);
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err_resource:
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release_mem_region(start, len);
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err_cmap:
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fb_dealloc_cmap(&info->cmap);
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err_alloc:
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root_pmagbbfb_dev = par->next;
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release_tc_card(par->slot);
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framebuffer_release(info);
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return -ENXIO;
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}
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static void __exit pmagbbfb_exit_one(void)
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static int __exit pmagbbfb_remove(struct device *dev)
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{
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struct fb_info *info = root_pmagbbfb_dev;
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struct tc_dev *tdev = to_tc_dev(dev);
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struct fb_info *info = dev_get_drvdata(dev);
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struct pmagbbfb_par *par = info->par;
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resource_size_t start, len;
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put_device(dev);
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unregister_framebuffer(info);
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iounmap(par->smem);
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iounmap(par->mmio);
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start = tdev->resource.start;
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len = tdev->resource.end - start + 1;
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release_mem_region(start, len);
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fb_dealloc_cmap(&info->cmap);
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root_pmagbbfb_dev = par->next;
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release_tc_card(par->slot);
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framebuffer_release(info);
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return 0;
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}
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/*
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* Initialise the framebuffer.
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* Initialize the framebuffer.
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*/
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static const struct tc_device_id pmagbbfb_tc_table[] = {
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{ "DEC ", "PMAGB-BA" },
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{ }
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};
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MODULE_DEVICE_TABLE(tc, pmagbbfb_tc_table);
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static struct tc_driver pmagbbfb_driver = {
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.id_table = pmagbbfb_tc_table,
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.driver = {
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.name = "pmagbbfb",
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.bus = &tc_bus_type,
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.probe = pmagbbfb_probe,
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.remove = __exit_p(pmagbbfb_remove),
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},
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};
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static int __init pmagbbfb_init(void)
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{
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int count = 0;
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int slot;
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#ifndef MODULE
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if (fb_get_options("pmagbbfb", NULL))
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return -ENXIO;
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while ((slot = search_tc_card("PMAGB-BA")) >= 0) {
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if (pmagbbfb_init_one(slot) < 0)
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break;
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count++;
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}
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return (count > 0) ? 0 : -ENXIO;
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#endif
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return tc_register_driver(&pmagbbfb_driver);
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}
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static void __exit pmagbbfb_exit(void)
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{
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while (root_pmagbbfb_dev)
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pmagbbfb_exit_one();
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tc_unregister_driver(&pmagbbfb_driver);
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}
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