From 441cbd8dace80545db2ac43175ac1c097d96f75c Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 26 Oct 2006 15:38:10 +1000 Subject: [PATCH] [POWERPC] Fix various offb issues This patch fixes a few issues in offb: - A test was inverted causing the palette hack to never work (no device node was passed down to the init function) - Some cards seem to have their assigned-addresses property in a random order, thus we need to try using of_get_pci_address() first, which will fail if it's not a PCI device, and fallback to of_get_address() in that case. of_get_pci_address() properly parsees assigned-addresses to test the BAR number and thus will get it right whatever the order is. - Some cards (like GXT4500) provide a linebytes of 0xffffffff in the device-tree which does no good. This patch handles that by using the screen width when that happens. (Also fixes btext.c while at it). - Add detection of the GXT4500 in addition to the GXT2000 for the palette hacks (we use the same hack, palette is linear in register space at offset 0x6000). Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/btext.c | 2 +- drivers/video/offb.c | 36 +++++++++++++++++++++++------------- 2 files changed, 24 insertions(+), 14 deletions(-) diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c index 995fcef156f..93f21aaf7c8 100644 --- a/arch/powerpc/kernel/btext.c +++ b/arch/powerpc/kernel/btext.c @@ -182,7 +182,7 @@ int btext_initialize(struct device_node *np) prop = get_property(np, "linux,bootx-linebytes", NULL); if (prop == NULL) prop = get_property(np, "linebytes", NULL); - if (prop) + if (prop && *prop != 0xffffffffu) pitch = *prop; if (pitch == 1) pitch = 0x1000; diff --git a/drivers/video/offb.c b/drivers/video/offb.c index bad0e98fb3b..9a40bbecf76 100644 --- a/drivers/video/offb.c +++ b/drivers/video/offb.c @@ -157,7 +157,7 @@ static int offb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, out_le32(par->cmap_adr + 0xb4, (red << 16 | green << 8 | blue)); break; case cmap_gxt2000: - out_le32((unsigned __iomem *) par->cmap_adr + regno, + out_le32(((unsigned __iomem *) par->cmap_adr) + regno, (red << 16 | green << 8 | blue)); break; } @@ -213,7 +213,7 @@ static int offb_blank(int blank, struct fb_info *info) out_le32(par->cmap_adr + 0xb4, 0); break; case cmap_gxt2000: - out_le32((unsigned __iomem *) par->cmap_adr + i, + out_le32(((unsigned __iomem *) par->cmap_adr) + i, 0); break; } @@ -226,13 +226,23 @@ static int offb_blank(int blank, struct fb_info *info) static void __iomem *offb_map_reg(struct device_node *np, int index, unsigned long offset, unsigned long size) { - struct resource r; - - if (of_address_to_resource(np, index, &r)) - return 0; - if ((r.start + offset + size) > r.end) - return 0; - return ioremap(r.start + offset, size); + const u32 *addrp; + u64 asize, taddr; + unsigned int flags; + + addrp = of_get_pci_address(np, index, &asize, &flags); + if (addrp == NULL) + addrp = of_get_address(np, index, &asize, &flags); + if (addrp == NULL) + return NULL; + if ((flags & (IORESOURCE_IO | IORESOURCE_MEM)) == 0) + return NULL; + if ((offset + size) > asize) + return NULL; + taddr = of_translate_address(np, addrp); + if (taddr == OF_BAD_ADDR) + return NULL; + return ioremap(taddr + offset, size); } static void __init offb_init_fb(const char *name, const char *full_name, @@ -289,7 +299,6 @@ static void __init offb_init_fb(const char *name, const char *full_name, par->cmap_type = cmap_unknown; if (depth == 8) { - /* Palette hacks disabled for now */ if (dp && !strncmp(name, "ATY,Rage128", 11)) { par->cmap_adr = offb_map_reg(dp, 2, 0, 0x1fff); if (par->cmap_adr) @@ -313,7 +322,8 @@ static void __init offb_init_fb(const char *name, const char *full_name, ioremap(base + 0x7ff000, 0x1000) + 0xcc0; par->cmap_data = par->cmap_adr + 1; par->cmap_type = cmap_m64; - } else if (dp && device_is_compatible(dp, "pci1014,b7")) { + } else if (dp && (device_is_compatible(dp, "pci1014,b7") || + device_is_compatible(dp, "pci1014,21c"))) { par->cmap_adr = offb_map_reg(dp, 0, 0x6000, 0x1000); if (par->cmap_adr) par->cmap_type = cmap_gxt2000; @@ -433,7 +443,7 @@ static void __init offb_init_nodriver(struct device_node *dp, int no_real_node) pp = get_property(dp, "linux,bootx-linebytes", &len); if (pp == NULL) pp = get_property(dp, "linebytes", &len); - if (pp && len == sizeof(u32)) + if (pp && len == sizeof(u32) && (*pp != 0xffffffffu)) pitch = *pp; else pitch = width * ((depth + 7) / 8); @@ -496,7 +506,7 @@ static void __init offb_init_nodriver(struct device_node *dp, int no_real_node) offb_init_fb(no_real_node ? "bootx" : dp->name, no_real_node ? "display" : dp->full_name, width, height, depth, pitch, address, - no_real_node ? dp : NULL); + no_real_node ? NULL : dp); } } -- 2.41.1