/*
* HP300 Topcat framebuffer support (derived from macfb of all things)
* Phil Blundell <philb@gnu.org> 1998
- * DIO-II, colour map and Catseye support by
- * Kars de Jong <jongk@linux-m68k.org>, May 2004.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/fb.h>
#include <linux/dio.h>
-
#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <asm/blinken.h>
+#include <asm/hwtest.h>
-static struct fb_info fb_info = {
- .fix = {
- .id = "HP300 ",
- .type = FB_TYPE_PACKED_PIXELS,
- .visual = FB_VISUAL_PSEUDOCOLOR,
- .accel = FB_ACCEL_NONE,
- }
-};
+static struct fb_info fb_info;
-static unsigned long fb_regs;
-static unsigned char fb_bitmask;
+unsigned long fb_regs;
+unsigned char fb_bitmask;
-#define TC_NBLANK 0x4080
#define TC_WEN 0x4088
#define TC_REN 0x408c
#define TC_FBEN 0x4090
-#define TC_PRR 0x40ea
-
-/* These defines match the X window system */
-#define RR_CLEAR 0x0
-#define RR_COPY 0x3
-#define RR_NOOP 0x5
-#define RR_XOR 0x6
-#define RR_INVERT 0xa
-#define RR_COPYINVERTED 0xc
-#define RR_SET 0xf
+#define TC_NBLANK 0x4080
/* blitter regs */
#define BUSY 0x4044
#define WWIDTH 0x4102
#define WMOVE 0x409c
+static struct fb_fix_screeninfo hpfb_fix __initdata = {
+ .id = "HP300 Topcat",
+ .smem_len = 1024*768,
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_PSEUDOCOLOR,
+ .line_length = 1024,
+ .accel = FB_ACCEL_NONE,
+};
+
static struct fb_var_screeninfo hpfb_defined = {
- .red = {
- .length = 8,
- },
- .green = {
- .length = 8,
- },
- .blue = {
- .length = 8,
- },
+ .xres = 1024,
+ .yres = 768,
+ .xres_virtual = 1024,
+ .yres_virtual = 786,
+ .bits_per_pixel = 1,
+ .red = {0,2,0}, /* R */
+ .green = {0,2,0}, /* G */
+ .blue = {0,2,0}, /* B */
.activate = FB_ACTIVATE_NOW,
- .height = -1,
- .width = -1,
+ .height = 274,
+ .width = 195, /* 14" monitor */
+ .accel_flags = FB_ACCEL_NONE,
.vmode = FB_VMODE_NONINTERLACED,
};
+/*
+ * Set the palette. This may not work on all boards but only experimentation
+ * will tell.
+ * XXX Doesn't work at all.
+ */
static int hpfb_setcolreg(unsigned regno, unsigned red, unsigned green,
- unsigned blue, unsigned transp,
- struct fb_info *info)
+ unsigned blue, unsigned transp,
+ struct fb_info *info)
{
- /* use MSBs */
- unsigned char _red =red>>8;
- unsigned char _green=green>>8;
- unsigned char _blue =blue>>8;
- unsigned char _regno=regno;
-
- /*
- * Set a single color register. The values supplied are
- * already rounded down to the hardware's capabilities
- * (according to the entries in the `var' structure). Return
- * != 0 for invalid regno.
- */
-
- if (regno >= info->cmap.len)
- return 1;
-
while (in_be16(fb_regs + 0x6002) & 0x4) udelay(1);
-
- out_be16(fb_regs + 0x60ba, 0xff);
-
- out_be16(fb_regs + 0x60b2, _red);
- out_be16(fb_regs + 0x60b4, _green);
- out_be16(fb_regs + 0x60b6, _blue);
- out_be16(fb_regs + 0x60b8, ~_regno);
+ out_be16(fb_regs + 0x60f0, 0);
+ out_be16(fb_regs + 0x60b8, regno);
+ out_be16(fb_regs + 0x60b2, red);
+ out_be16(fb_regs + 0x60b4, green);
+ out_be16(fb_regs + 0x60b6, blue);
out_be16(fb_regs + 0x60f0, 0xff);
-
udelay(100);
-
- while (in_be16(fb_regs + 0x6002) & 0x4) udelay(1);
- out_be16(fb_regs + 0x60b2, 0);
- out_be16(fb_regs + 0x60b4, 0);
- out_be16(fb_regs + 0x60b6, 0);
- out_be16(fb_regs + 0x60b8, 0);
-
- return 0;
-}
-
-/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
-
-static int hpfb_blank(int blank, struct fb_info *info)
-{
- out_8(fb_regs + TC_NBLANK, (blank ? 0x00 : fb_bitmask));
-
+ out_be16(fb_regs + 0x60ba, 0xffff);
return 0;
}
-static void topcat_blit(int x0, int y0, int x1, int y1, int w, int h, int rr)
+void hpfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
- if (rr >= 0) {
- while (in_8(fb_regs + BUSY) & fb_bitmask)
- ;
- }
- out_8(fb_regs + TC_FBEN, fb_bitmask);
- if (rr >= 0) {
- out_8(fb_regs + TC_WEN, fb_bitmask);
- out_8(fb_regs + WMRR, rr);
- }
- out_be16(fb_regs + SOURCE_X, x0);
- out_be16(fb_regs + SOURCE_Y, y0);
- out_be16(fb_regs + DEST_X, x1);
- out_be16(fb_regs + DEST_Y, y1);
- out_be16(fb_regs + WWIDTH, w);
- out_be16(fb_regs + WHEIGHT, h);
+ while (in_8(fb_regs + BUSY) & fb_bitmask);
+ out_8(fb_regs + WMRR, 0x3);
+ out_be16(fb_regs + SOURCE_X, area->sx);
+ out_be16(fb_regs + SOURCE_Y, area->sy);
+ out_be16(fb_regs + DEST_X, area->dx);
+ out_be16(fb_regs + DEST_Y, area->dy);
+ out_be16(fb_regs + WHEIGHT, area->height);
+ out_be16(fb_regs + WWIDTH, area->width);
out_8(fb_regs + WMOVE, fb_bitmask);
}
-static void hpfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
-{
- topcat_blit(area->sx, area->sy, area->dx, area->dy, area->width, area->height, RR_COPY);
-}
-
-static void hpfb_fillrect(struct fb_info *p, const struct fb_fillrect *region)
-{
- u8 clr;
-
- clr = region->color & 0xff;
-
- while (in_8(fb_regs + BUSY) & fb_bitmask)
- ;
-
- /* Foreground */
- out_8(fb_regs + TC_WEN, fb_bitmask & clr);
- out_8(fb_regs + WMRR, (region->rop == ROP_COPY ? RR_SET : RR_INVERT));
-
- /* Background */
- out_8(fb_regs + TC_WEN, fb_bitmask & ~clr);
- out_8(fb_regs + WMRR, (region->rop == ROP_COPY ? RR_CLEAR : RR_NOOP));
-
- topcat_blit(region->dx, region->dy, region->dx, region->dy, region->width, region->height, -1);
-}
-
-static int hpfb_sync(struct fb_info *info)
-{
- /*
- * Since we also access the framebuffer directly, we have to wait
- * until the block mover is finished
- */
- while (in_8(fb_regs + BUSY) & fb_bitmask)
- ;
-
- out_8(fb_regs + TC_WEN, fb_bitmask);
- out_8(fb_regs + TC_PRR, RR_COPY);
- out_8(fb_regs + TC_FBEN, fb_bitmask);
-
- return 0;
-}
-
static struct fb_ops hpfb_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = hpfb_setcolreg,
- .fb_blank = hpfb_blank,
- .fb_fillrect = hpfb_fillrect,
+ .fb_fillrect = cfb_fillrect,
.fb_copyarea = hpfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_cursor = soft_cursor,
- .fb_sync = hpfb_sync,
};
-/* Common to all HP framebuffers */
-#define HPFB_FBWMSB 0x05 /* Frame buffer width */
-#define HPFB_FBWLSB 0x07
-#define HPFB_FBHMSB 0x09 /* Frame buffer height */
-#define HPFB_FBHLSB 0x0b
-#define HPFB_DWMSB 0x0d /* Display width */
-#define HPFB_DWLSB 0x0f
-#define HPFB_DHMSB 0x11 /* Display height */
-#define HPFB_DHLSB 0x13
-#define HPFB_NUMPLANES 0x5b /* Number of colour planes */
-#define HPFB_FBOMSB 0x5d /* Frame buffer offset */
-#define HPFB_FBOLSB 0x5f
+#define TOPCAT_FBOMSB 0x5d
+#define TOPCAT_FBOLSB 0x5f
-static int __init hpfb_init_one(unsigned long phys_base, unsigned long virt_base)
+int __init hpfb_init_one(unsigned long base)
{
- unsigned long fboff, fb_width, fb_height, fb_start;
-
- fb_regs = virt_base;
- fboff = (in_8(fb_regs + HPFB_FBOMSB) << 8) | in_8(fb_regs + HPFB_FBOLSB);
-
- fb_info.fix.smem_start = (in_8(fb_regs + fboff) << 16);
-
- if (phys_base >= DIOII_BASE) {
- fb_info.fix.smem_start += phys_base;
- }
-
- if (DIO_SECID(fb_regs) != DIO_ID2_TOPCAT) {
- /* This is the magic incantation the HP X server uses to make Catseye boards work. */
- while (in_be16(fb_regs+0x4800) & 1)
- ;
- out_be16(fb_regs+0x4800, 0); /* Catseye status */
- out_be16(fb_regs+0x4510, 0); /* VB */
- out_be16(fb_regs+0x4512, 0); /* TCNTRL */
- out_be16(fb_regs+0x4514, 0); /* ACNTRL */
- out_be16(fb_regs+0x4516, 0); /* PNCNTRL */
- out_be16(fb_regs+0x4206, 0x90); /* RUG Command/Status */
- out_be16(fb_regs+0x60a2, 0); /* Overlay Mask */
- out_be16(fb_regs+0x60bc, 0); /* Ram Select */
- }
-
- /*
- * Fill in the available video resolution
- */
- fb_width = (in_8(fb_regs + HPFB_FBWMSB) << 8) | in_8(fb_regs + HPFB_FBWLSB);
- fb_info.fix.line_length = fb_width;
- fb_height = (in_8(fb_regs + HPFB_FBHMSB) << 8) | in_8(fb_regs + HPFB_FBHLSB);
- fb_info.fix.smem_len = fb_width * fb_height;
- fb_start = (unsigned long)ioremap_writethrough(fb_info.fix.smem_start,
- fb_info.fix.smem_len);
- hpfb_defined.xres = (in_8(fb_regs + HPFB_DWMSB) << 8) | in_8(fb_regs + HPFB_DWLSB);
- hpfb_defined.yres = (in_8(fb_regs + HPFB_DHMSB) << 8) | in_8(fb_regs + HPFB_DHLSB);
- hpfb_defined.xres_virtual = hpfb_defined.xres;
- hpfb_defined.yres_virtual = hpfb_defined.yres;
- hpfb_defined.bits_per_pixel = in_8(fb_regs + HPFB_NUMPLANES);
+ unsigned long fboff;
- printk(KERN_INFO "hpfb: framebuffer at 0x%lx, mapped to 0x%lx, size %dk\n",
- fb_info.fix.smem_start, fb_start, fb_info.fix.smem_len/1024);
- printk(KERN_INFO "hpfb: mode is %dx%dx%d, linelength=%d\n",
- hpfb_defined.xres, hpfb_defined.yres, hpfb_defined.bits_per_pixel, fb_info.fix.line_length);
+ if (fb_get_options("hpfb", NULL))
+ return -ENODEV;
- /*
+ fboff = (in_8(base + TOPCAT_FBOMSB) << 8) | in_8(base + TOPCAT_FBOLSB);
+
+ hpfb_fix.smem_start = 0xf0000000 | (in_8(base + fboff) << 16);
+ fb_regs = base;
+
+#if 0
+ /* This is the magic incantation NetBSD uses to make Catseye boards work. */
+ out_8(base+0x4800, 0);
+ out_8(base+0x4510, 0);
+ out_8(base+0x4512, 0);
+ out_8(base+0x4514, 0);
+ out_8(base+0x4516, 0);
+ out_8(base+0x4206, 0x90);
+#endif
+ /*
* Give the hardware a bit of a prod and work out how many bits per
* pixel are supported.
*/
- out_8(fb_regs + TC_WEN, 0xff);
- out_8(fb_regs + TC_PRR, RR_COPY);
- out_8(fb_regs + TC_FBEN, 0xff);
- out_8(fb_start, 0xff);
- fb_bitmask = in_8(fb_start);
- out_8(fb_start, 0);
+
+ out_8(base + TC_WEN, 0xff);
+ out_8(base + TC_FBEN, 0xff);
+ out_8(hpfb_fix.smem_start, 0xff);
+ fb_bitmask = in_8(hpfb_fix.smem_start);
/*
* Enable reading/writing of all the planes.
*/
- out_8(fb_regs + TC_WEN, fb_bitmask);
- out_8(fb_regs + TC_PRR, RR_COPY);
- out_8(fb_regs + TC_REN, fb_bitmask);
- out_8(fb_regs + TC_FBEN, fb_bitmask);
-
- /*
- * Clear the screen.
- */
- topcat_blit(0, 0, 0, 0, fb_width, fb_height, RR_CLEAR);
+ out_8(base + TC_WEN, fb_bitmask);
+ out_8(base + TC_REN, fb_bitmask);
+ out_8(base + TC_FBEN, fb_bitmask);
+ out_8(base + TC_NBLANK, 0x1);
/*
* Let there be consoles..
*/
- if (DIO_SECID(fb_regs) == DIO_ID2_TOPCAT)
- strcat(fb_info.fix.id, "Topcat");
- else
- strcat(fb_info.fix.id, "Catseye");
fb_info.fbops = &hpfb_ops;
fb_info.flags = FBINFO_DEFAULT;
fb_info.var = hpfb_defined;
- fb_info.screen_base = (char *)fb_start;
+ fb_info.fix = hpfb_fix;
+ fb_info.screen_base = (char *)hpfb_fix.smem_start; // FIXME
- fb_alloc_cmap(&fb_info.cmap, 1 << hpfb_defined.bits_per_pixel, 0);
+ fb_alloc_cmap(&fb_info.cmap, 256, 0);
- if (register_framebuffer(&fb_info) < 0) {
- fb_dealloc_cmap(&fb_info.cmap);
+ if (register_framebuffer(&fb_info) < 0)
return 1;
- }
-
- printk(KERN_INFO "fb%d: %s frame buffer device\n",
- fb_info.node, fb_info.fix.id);
-
return 0;
}
/*
* Initialise the framebuffer
*/
-static int __devinit hpfb_dio_probe(struct dio_dev * d, const struct dio_device_id * ent)
-{
- unsigned long paddr, vaddr;
-
- paddr = d->resource.start;
- if (!request_mem_region(d->resource.start, d->resource.end - d->resource.start, d->name))
- return -EBUSY;
-
- if (d->scode >= DIOII_SCBASE) {
- vaddr = (unsigned long)ioremap(paddr, d->resource.end - d->resource.start);
- } else {
- vaddr = paddr + DIO_VIRADDRBASE;
- }
- printk(KERN_INFO "Topcat found at DIO select code %d "
- "(secondary id %02x)\n", d->scode, (d->id >> 8) & 0xff);
- if (hpfb_init_one(paddr, vaddr)) {
- if (d->scode >= DIOII_SCBASE)
- iounmap((void *)vaddr);
- return -ENOMEM;
- }
- return 0;
-}
-
-static void __devexit hpfb_remove_one(struct dio_dev *d)
-{
- unregister_framebuffer(&fb_info);
- if (d->scode >= DIOII_SCBASE)
- iounmap((void *)fb_regs);
- release_mem_region(d->resource.start, d->resource.end - d->resource.start);
-}
-
-static struct dio_device_id hpfb_dio_tbl[] = {
- { DIO_ENCODE_ID(DIO_ID_FBUFFER, DIO_ID2_LRCATSEYE) },
- { DIO_ENCODE_ID(DIO_ID_FBUFFER, DIO_ID2_HRCCATSEYE) },
- { DIO_ENCODE_ID(DIO_ID_FBUFFER, DIO_ID2_HRMCATSEYE) },
- { DIO_ENCODE_ID(DIO_ID_FBUFFER, DIO_ID2_TOPCAT) },
- { 0 }
-};
-
-static struct dio_driver hpfb_driver = {
- .name = "hpfb",
- .id_table = hpfb_dio_tbl,
- .probe = hpfb_dio_probe,
- .remove = __devexit_p(hpfb_remove_one),
-};
int __init hpfb_init(void)
{
unsigned int sid;
- mm_segment_t fs;
- unsigned char i;
- int err;
/* Topcats can be on the internal IO bus or real DIO devices.
- * The internal variant sits at 0x560000; it has primary
+ * The internal variant sits at 0xf0560000; it has primary
* and secondary ID registers just like the DIO version.
* So we merge the two detection routines.
*
* Perhaps this #define should be in a global header file:
* I believe it's common to all internal fbs, not just topcat.
*/
-#define INTFBVADDR 0xf0560000
-#define INTFBPADDR 0x560000
-
- if (!MACH_IS_HP300)
- return -ENXIO;
-
- if (fb_get_options("hpfb", NULL))
- return -ENODEV;
+#define INTFBADDR 0xf0560000
- dio_module_init(&hpfb_driver);
+ if (hwreg_present((void *)INTFBADDR) &&
+ (DIO_ID(INTFBADDR) == DIO_ID_FBUFFER) &&
+ topcat_sid_ok(sid = DIO_SECID(INTFBADDR))) {
+ printk("Internal Topcat found (secondary id %02x)\n", sid);
+ hpfb_init_one(INTFBADDR);
+ } else {
+ int sc = dio_find(DIO_ID_FBUFFER);
- fs = get_fs();
- set_fs(KERNEL_DS);
- err = get_user(i, (unsigned char *)INTFBVADDR + DIO_IDOFF);
- set_fs(fs);
+ if (sc) {
+ unsigned long addr = (unsigned long)dio_scodetoviraddr(sc);
+ unsigned int sid = DIO_SECID(addr);
- if (!err && (i == DIO_ID_FBUFFER) && topcat_sid_ok(sid = DIO_SECID(INTFBVADDR))) {
- if (!request_mem_region(INTFBPADDR, DIO_DEVSIZE, "Internal Topcat"))
- return -EBUSY;
- printk(KERN_INFO "Internal Topcat found (secondary id %02x)\n", sid);
- if (hpfb_init_one(INTFBPADDR, INTFBVADDR)) {
- return -ENOMEM;
+ if (topcat_sid_ok(sid)) {
+ printk("Topcat found at DIO select code %02x "
+ "(secondary id %02x)\n", sc, sid);
+ hpfb_init_one(addr);
+ }
}
}
return 0;
}
-void __exit hpfb_cleanup_module(void)
-{
- dio_unregister_driver(&hpfb_driver);
-}
-
module_init(hpfb_init);
-module_exit(hpfb_cleanup_module);
-
MODULE_LICENSE("GPL");