/* cg14.c: CGFOURTEEN frame buffer driver
*
- * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 2003 David S. Miller (davem@redhat.com)
* Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
* Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx)
*
#include <linux/mm.h>
#include <asm/io.h>
-#include <asm/prom.h>
-#include <asm/of_device.h>
+#include <asm/sbus.h>
+#include <asm/oplib.h>
#include <asm/fbio.h>
#include "sbuslib.h"
#define CG14_MCR_PIXMODE_32 3
struct cg14_regs{
- u8 mcr; /* Master Control Reg */
- u8 ppr; /* Packed Pixel Reg */
- u8 tms[2]; /* Test Mode Status Regs */
- u8 msr; /* Master Status Reg */
- u8 fsr; /* Fault Status Reg */
- u8 rev; /* Revision & Impl */
- u8 ccr; /* Clock Control Reg */
- u32 tmr; /* Test Mode Read Back */
- u8 mod; /* Monitor Operation Data Reg */
- u8 acr; /* Aux Control */
+ volatile u8 mcr; /* Master Control Reg */
+ volatile u8 ppr; /* Packed Pixel Reg */
+ volatile u8 tms[2]; /* Test Mode Status Regs */
+ volatile u8 msr; /* Master Status Reg */
+ volatile u8 fsr; /* Fault Status Reg */
+ volatile u8 rev; /* Revision & Impl */
+ volatile u8 ccr; /* Clock Control Reg */
+ volatile u32 tmr; /* Test Mode Read Back */
+ volatile u8 mod; /* Monitor Operation Data Reg */
+ volatile u8 acr; /* Aux Control */
u8 xxx0[6];
- u16 hct; /* Hor Counter */
- u16 vct; /* Vert Counter */
- u16 hbs; /* Hor Blank Start */
- u16 hbc; /* Hor Blank Clear */
- u16 hss; /* Hor Sync Start */
- u16 hsc; /* Hor Sync Clear */
- u16 csc; /* Composite Sync Clear */
- u16 vbs; /* Vert Blank Start */
- u16 vbc; /* Vert Blank Clear */
- u16 vss; /* Vert Sync Start */
- u16 vsc; /* Vert Sync Clear */
- u16 xcs;
- u16 xcc;
- u16 fsa; /* Fault Status Address */
- u16 adr; /* Address Registers */
+ volatile u16 hct; /* Hor Counter */
+ volatile u16 vct; /* Vert Counter */
+ volatile u16 hbs; /* Hor Blank Start */
+ volatile u16 hbc; /* Hor Blank Clear */
+ volatile u16 hss; /* Hor Sync Start */
+ volatile u16 hsc; /* Hor Sync Clear */
+ volatile u16 csc; /* Composite Sync Clear */
+ volatile u16 vbs; /* Vert Blank Start */
+ volatile u16 vbc; /* Vert Blank Clear */
+ volatile u16 vss; /* Vert Sync Start */
+ volatile u16 vsc; /* Vert Sync Clear */
+ volatile u16 xcs;
+ volatile u16 xcc;
+ volatile u16 fsa; /* Fault Status Address */
+ volatile u16 adr; /* Address Registers */
u8 xxx1[0xce];
- u8 pcg[0x100]; /* Pixel Clock Generator */
- u32 vbr; /* Frame Base Row */
- u32 vmcr; /* VBC Master Control */
- u32 vcr; /* VBC refresh */
- u32 vca; /* VBC Config */
+ volatile u8 pcg[0x100]; /* Pixel Clock Generator */
+ volatile u32 vbr; /* Frame Base Row */
+ volatile u32 vmcr; /* VBC Master Control */
+ volatile u32 vcr; /* VBC refresh */
+ volatile u32 vca; /* VBC Config */
};
#define CG14_CCR_ENABLE 0x04
#define CG14_CCR_SELECT 0x02 /* HW/Full screen */
struct cg14_cursor {
- u32 cpl0[32]; /* Enable plane 0 */
- u32 cpl1[32]; /* Color selection plane */
- u8 ccr; /* Cursor Control Reg */
+ volatile u32 cpl0[32]; /* Enable plane 0 */
+ volatile u32 cpl1[32]; /* Color selection plane */
+ volatile u8 ccr; /* Cursor Control Reg */
u8 xxx0[3];
- u16 cursx; /* Cursor x,y position */
- u16 cursy; /* Cursor x,y position */
- u32 color0;
- u32 color1;
+ volatile u16 cursx; /* Cursor x,y position */
+ volatile u16 cursy; /* Cursor x,y position */
+ volatile u32 color0;
+ volatile u32 color1;
u32 xxx1[0x1bc];
- u32 cpl0i[32]; /* Enable plane 0 autoinc */
- u32 cpl1i[32]; /* Color selection autoinc */
+ volatile u32 cpl0i[32]; /* Enable plane 0 autoinc */
+ volatile u32 cpl1i[32]; /* Color selection autoinc */
};
struct cg14_dac {
- u8 addr; /* Address Register */
+ volatile u8 addr; /* Address Register */
u8 xxx0[255];
- u8 glut; /* Gamma table */
+ volatile u8 glut; /* Gamma table */
u8 xxx1[255];
- u8 select; /* Register Select */
+ volatile u8 select; /* Register Select */
u8 xxx2[255];
- u8 mode; /* Mode Register */
+ volatile u8 mode; /* Mode Register */
};
struct cg14_xlut{
- u8 x_xlut [256];
- u8 x_xlutd [256];
+ volatile u8 x_xlut [256];
+ volatile u8 x_xlutd [256];
u8 xxx0[0x600];
- u8 x_xlut_inc [256];
- u8 x_xlutd_inc [256];
+ volatile u8 x_xlut_inc [256];
+ volatile u8 x_xlutd_inc [256];
};
/* Color look up table (clut) */
int mode;
int ramsize;
+ struct sbus_dev *sdev;
};
static void __cg14_reset(struct cg14_par *par)
* Initialisation
*/
-static void cg14_init_fix(struct fb_info *info, int linebytes, struct device_node *dp)
+static void cg14_init_fix(struct fb_info *info, int linebytes)
{
- const char *name = dp->name;
+ struct cg14_par *par = (struct cg14_par *)info->par;
+ const char *name;
+
+ name = "cgfourteen";
+ if (par->sdev)
+ name = par->sdev->prom_name;
strlcpy(info->fix.id, name, sizeof(info->fix.id));
struct all_info {
struct fb_info info;
struct cg14_par par;
+ struct list_head list;
};
+static LIST_HEAD(cg14_list);
-static void cg14_unmap_regs(struct all_info *all)
-{
- if (all->par.regs)
- of_iounmap(all->par.regs, sizeof(struct cg14_regs));
- if (all->par.clut)
- of_iounmap(all->par.clut, sizeof(struct cg14_clut));
- if (all->par.cursor)
- of_iounmap(all->par.cursor, sizeof(struct cg14_cursor));
- if (all->info.screen_base)
- of_iounmap(all->info.screen_base, all->par.fbsize);
-}
-
-static int __devinit cg14_init_one(struct of_device *op)
+static void cg14_init_one(struct sbus_dev *sdev, int node, int parent_node)
{
- struct device_node *dp = op->node;
struct all_info *all;
- int is_8mb, linebytes, i, err;
+ unsigned long phys, rphys;
+ u32 bases[6];
+ int is_8mb, linebytes, i;
+
+ if (!sdev) {
+ if (prom_getproperty(node, "address",
+ (char *) &bases[0], sizeof(bases)) <= 0
+ || !bases[0]) {
+ printk(KERN_ERR "cg14: Device is not mapped.\n");
+ return;
+ }
+ if (__get_iospace(bases[0]) != __get_iospace(bases[1])) {
+ printk(KERN_ERR "cg14: I/O spaces don't match.\n");
+ return;
+ }
+ }
+
+ all = kmalloc(sizeof(*all), GFP_KERNEL);
+ if (!all) {
+ printk(KERN_ERR "cg14: Cannot allocate memory.\n");
+ return;
+ }
+ memset(all, 0, sizeof(*all));
- all = kzalloc(sizeof(*all), GFP_KERNEL);
- if (!all)
- return -ENOMEM;
+ INIT_LIST_HEAD(&all->list);
spin_lock_init(&all->par.lock);
- sbusfb_fill_var(&all->info.var, dp->node, 8);
+ sbusfb_fill_var(&all->info.var, node, 8);
all->info.var.red.length = 8;
all->info.var.green.length = 8;
all->info.var.blue.length = 8;
- linebytes = of_getintprop_default(dp, "linebytes",
- all->info.var.xres);
+ linebytes = prom_getintdefault(node, "linebytes",
+ all->info.var.xres);
all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
- if (!strcmp(dp->parent->name, "sbus") ||
- !strcmp(dp->parent->name, "sbi")) {
- all->par.physbase = op->resource[0].start;
- all->par.iospace = op->resource[0].flags & IORESOURCE_BITS;
+ all->par.sdev = sdev;
+ if (sdev) {
+ rphys = sdev->reg_addrs[0].phys_addr;
+ all->par.physbase = phys = sdev->reg_addrs[1].phys_addr;
+ all->par.iospace = sdev->reg_addrs[0].which_io;
+
+ all->par.regs = sbus_ioremap(&sdev->resource[0], 0,
+ sizeof(struct cg14_regs),
+ "cg14 regs");
+ all->par.clut = sbus_ioremap(&sdev->resource[0], CG14_CLUT1,
+ sizeof(struct cg14_clut),
+ "cg14 clut");
+ all->par.cursor = sbus_ioremap(&sdev->resource[0], CG14_CURSORREGS,
+ sizeof(struct cg14_cursor),
+ "cg14 cursor");
+ all->info.screen_base = sbus_ioremap(&sdev->resource[1], 0,
+ all->par.fbsize, "cg14 ram");
} else {
- all->par.physbase = op->resource[1].start;
- all->par.iospace = op->resource[0].flags & IORESOURCE_BITS;
+ rphys = __get_phys(bases[0]);
+ all->par.physbase = phys = __get_phys(bases[1]);
+ all->par.iospace = __get_iospace(bases[0]);
+ all->par.regs = (struct cg14_regs __iomem *)(unsigned long)bases[0];
+ all->par.clut = (struct cg14_clut __iomem *)((unsigned long)bases[0] +
+ CG14_CLUT1);
+ all->par.cursor =
+ (struct cg14_cursor __iomem *)((unsigned long)bases[0] +
+ CG14_CURSORREGS);
+
+ all->info.screen_base = (char __iomem *)(unsigned long)bases[1];
}
- all->par.regs = of_ioremap(&op->resource[0], 0,
- sizeof(struct cg14_regs), "cg14 regs");
- all->par.clut = of_ioremap(&op->resource[0], CG14_CLUT1,
- sizeof(struct cg14_clut), "cg14 clut");
- all->par.cursor = of_ioremap(&op->resource[0], CG14_CURSORREGS,
- sizeof(struct cg14_cursor), "cg14 cursor");
+ prom_getproperty(node, "reg", (char *) &bases[0], sizeof(bases));
+ is_8mb = (bases[5] == 0x800000);
- all->info.screen_base = of_ioremap(&op->resource[1], 0,
- all->par.fbsize, "cg14 ram");
+ if (sizeof(all->par.mmap_map) != sizeof(__cg14_mmap_map)) {
+ extern void __cg14_mmap_sized_wrongly(void);
- if (!all->par.regs || !all->par.clut || !all->par.cursor ||
- !all->info.screen_base)
- cg14_unmap_regs(all);
-
- is_8mb = (((op->resource[1].end - op->resource[1].start) + 1) ==
- (8 * 1024 * 1024));
-
- BUILD_BUG_ON(sizeof(all->par.mmap_map) != sizeof(__cg14_mmap_map));
+ __cg14_mmap_sized_wrongly();
+ }
- memcpy(&all->par.mmap_map, &__cg14_mmap_map,
- sizeof(all->par.mmap_map));
-
+ memcpy(&all->par.mmap_map, &__cg14_mmap_map, sizeof(all->par.mmap_map));
for (i = 0; i < CG14_MMAP_ENTRIES; i++) {
struct sbus_mmap_map *map = &all->par.mmap_map[i];
if (!map->size)
break;
if (map->poff & 0x80000000)
- map->poff = (map->poff & 0x7fffffff) +
- (op->resource[0].start -
- op->resource[1].start);
+ map->poff = (map->poff & 0x7fffffff) + rphys - phys;
if (is_8mb &&
map->size >= 0x100000 &&
map->size <= 0x400000)
__cg14_reset(&all->par);
if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
- cg14_unmap_regs(all);
+ printk(KERN_ERR "cg14: Could not allocate color map.\n");
kfree(all);
- return -ENOMEM;
+ return;
}
fb_set_cmap(&all->info.cmap, &all->info);
- cg14_init_fix(&all->info, linebytes, dp);
+ cg14_init_fix(&all->info, linebytes);
- err = register_framebuffer(&all->info);
- if (err < 0) {
+ if (register_framebuffer(&all->info) < 0) {
+ printk(KERN_ERR "cg14: Could not register framebuffer.\n");
fb_dealloc_cmap(&all->info.cmap);
- cg14_unmap_regs(all);
kfree(all);
- return err;
+ return;
}
- dev_set_drvdata(&op->dev, all);
-
- printk("%s: cgfourteen at %lx:%lx, %dMB\n",
- dp->full_name,
- all->par.iospace, all->par.physbase,
- all->par.ramsize >> 20);
-
- return 0;
-}
+ list_add(&all->list, &cg14_list);
-static int __devinit cg14_probe(struct of_device *dev, const struct of_device_id *match)
-{
- struct of_device *op = to_of_device(&dev->dev);
+ printk("cg14: cgfourteen at %lx:%lx, %dMB\n",
+ all->par.iospace, all->par.physbase, all->par.ramsize >> 20);
- return cg14_init_one(op);
}
-static int __devexit cg14_remove(struct of_device *dev)
+int __init cg14_init(void)
{
- struct all_info *all = dev_get_drvdata(&dev->dev);
-
- unregister_framebuffer(&all->info);
- fb_dealloc_cmap(&all->info.cmap);
-
- cg14_unmap_regs(all);
+ struct sbus_bus *sbus;
+ struct sbus_dev *sdev;
- kfree(all);
+ if (fb_get_options("cg14fb", NULL))
+ return -ENODEV;
- dev_set_drvdata(&dev->dev, NULL);
+#ifdef CONFIG_SPARC32
+ {
+ int root, node;
+
+ root = prom_getchild(prom_root_node);
+ root = prom_searchsiblings(root, "obio");
+ if (root) {
+ node = prom_searchsiblings(prom_getchild(root),
+ "cgfourteen");
+ if (node)
+ cg14_init_one(NULL, node, root);
+ }
+ }
+#endif
+ for_all_sbusdev(sdev, sbus) {
+ if (!strcmp(sdev->prom_name, "cgfourteen"))
+ cg14_init_one(sdev, sdev->prom_node, sbus->prom_node);
+ }
return 0;
}
-static struct of_device_id cg14_match[] = {
- {
- .name = "cgfourteen",
- },
- {},
-};
-MODULE_DEVICE_TABLE(of, cg14_match);
-
-static struct of_platform_driver cg14_driver = {
- .name = "cg14",
- .match_table = cg14_match,
- .probe = cg14_probe,
- .remove = __devexit_p(cg14_remove),
-};
-
-int __init cg14_init(void)
+void __exit cg14_exit(void)
{
- if (fb_get_options("cg14fb", NULL))
- return -ENODEV;
+ struct list_head *pos, *tmp;
- return of_register_driver(&cg14_driver, &of_bus_type);
+ list_for_each_safe(pos, tmp, &cg14_list) {
+ struct all_info *all = list_entry(pos, typeof(*all), list);
+
+ unregister_framebuffer(&all->info);
+ fb_dealloc_cmap(&all->info.cmap);
+ kfree(all);
+ }
}
-void __exit cg14_exit(void)
+int __init
+cg14_setup(char *arg)
{
- of_unregister_driver(&cg14_driver);
+ /* No cmdline options yet... */
+ return 0;
}
module_init(cg14_init);
+
+#ifdef MODULE
module_exit(cg14_exit);
+#endif
MODULE_DESCRIPTION("framebuffer driver for CGfourteen chipsets");
-MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
-MODULE_VERSION("2.0");
+MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
MODULE_LICENSE("GPL");
git://git.onelab.eu / linux-2.6.git / blobdiff