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-rw-r--r--drivers/video/offb.c284
1 files changed, 118 insertions, 166 deletions
diff --git a/drivers/video/offb.c b/drivers/video/offb.c
index bfeb11bd471..71ce1fa45cf 100644
--- a/drivers/video/offb.c
+++ b/drivers/video/offb.c
@@ -97,14 +97,43 @@ static int offb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info)
{
struct offb_par *par = (struct offb_par *) info->par;
+ int i, depth;
+ u32 *pal = info->pseudo_palette;
- if (!par->cmap_adr || regno > 255)
+ depth = info->var.bits_per_pixel;
+ if (depth == 16)
+ depth = (info->var.green.length == 5) ? 15 : 16;
+
+ if (regno > 255 ||
+ (depth == 16 && regno > 63) ||
+ (depth == 15 && regno > 31))
return 1;
+ if (regno < 16) {
+ switch (depth) {
+ case 15:
+ pal[regno] = (regno << 10) | (regno << 5) | regno;
+ break;
+ case 16:
+ pal[regno] = (regno << 11) | (regno << 5) | regno;
+ break;
+ case 24:
+ pal[regno] = (regno << 16) | (regno << 8) | regno;
+ break;
+ case 32:
+ i = (regno << 8) | regno;
+ pal[regno] = (i << 16) | i;
+ break;
+ }
+ }
+
red >>= 8;
green >>= 8;
blue >>= 8;
+ if (!par->cmap_adr)
+ return 0;
+
switch (par->cmap_type) {
case cmap_m64:
writeb(regno, par->cmap_adr);
@@ -141,20 +170,6 @@ static int offb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
break;
}
- if (regno < 16)
- switch (info->var.bits_per_pixel) {
- case 16:
- ((u16 *) (info->pseudo_palette))[regno] =
- (regno << 10) | (regno << 5) | regno;
- break;
- case 32:
- {
- int i = (regno << 8) | regno;
- ((u32 *) (info->pseudo_palette))[regno] =
- (i << 16) | i;
- break;
- }
- }
return 0;
}
@@ -223,81 +238,9 @@ int __init offb_init(void)
{
struct device_node *dp = NULL, *boot_disp = NULL;
-#if defined(CONFIG_BOOTX_TEXT) && defined(CONFIG_PPC32)
- struct device_node *macos_display = NULL;
-#endif
if (fb_get_options("offb", NULL))
return -ENODEV;
-#if defined(CONFIG_BOOTX_TEXT) && defined(CONFIG_PPC32)
- /* If we're booted from BootX... */
- if (boot_infos != 0) {
- unsigned long addr =
- (unsigned long) boot_infos->dispDeviceBase;
- u32 *addrp;
- u64 daddr, dsize;
- unsigned int flags;
-
- /* find the device node corresponding to the macos display */
- while ((dp = of_find_node_by_type(dp, "display"))) {
- int i;
-
- /*
- * Look for an AAPL,address property first.
- */
- unsigned int na;
- unsigned int *ap =
- (unsigned int *)get_property(dp, "AAPL,address",
- &na);
- if (ap != 0) {
- for (na /= sizeof(unsigned int); na > 0;
- --na, ++ap)
- if (*ap <= addr &&
- addr < *ap + 0x1000000) {
- macos_display = dp;
- goto foundit;
- }
- }
-
- /*
- * See if the display address is in one of the address
- * ranges for this display.
- */
- i = 0;
- for (;;) {
- addrp = of_get_address(dp, i++, &dsize, &flags);
- if (addrp == NULL)
- break;
- if (!(flags & IORESOURCE_MEM))
- continue;
- daddr = of_translate_address(dp, addrp);
- if (daddr == OF_BAD_ADDR)
- continue;
- if (daddr <= addr && addr < (daddr + dsize)) {
- macos_display = dp;
- goto foundit;
- }
- }
- foundit:
- if (macos_display) {
- printk(KERN_INFO "MacOS display is %s\n",
- dp->full_name);
- break;
- }
- }
-
- /* initialize it */
- offb_init_fb(macos_display ? macos_display->
- name : "MacOS display",
- macos_display ? macos_display->
- full_name : "MacOS display",
- boot_infos->dispDeviceRect[2],
- boot_infos->dispDeviceRect[3],
- boot_infos->dispDeviceDepth,
- boot_infos->dispDeviceRowBytes, addr, NULL);
- }
-#endif /* defined(CONFIG_BOOTX_TEXT) && defined(CONFIG_PPC32) */
-
for (dp = NULL; (dp = of_find_node_by_type(dp, "display"));) {
if (get_property(dp, "linux,opened", NULL) &&
get_property(dp, "linux,boot-display", NULL)) {
@@ -317,94 +260,93 @@ int __init offb_init(void)
static void __init offb_init_nodriver(struct device_node *dp)
{
- int *pp, i;
unsigned int len;
- int width = 640, height = 480, depth = 8, pitch;
- unsigned int flags, rsize, *up;
- u64 address = OF_BAD_ADDR;
- u32 *addrp;
+ int i, width = 640, height = 480, depth = 8, pitch = 640;
+ unsigned int flags, rsize, addr_prop = 0;
+ unsigned long max_size = 0;
+ u64 rstart, address = OF_BAD_ADDR;
+ u32 *pp, *addrp, *up;
u64 asize;
- if ((pp = (int *) get_property(dp, "depth", &len)) != NULL
- && len == sizeof(int))
+ pp = (u32 *)get_property(dp, "linux,bootx-depth", &len);
+ if (pp == NULL)
+ pp = (u32 *)get_property(dp, "depth", &len);
+ if (pp && len == sizeof(u32))
depth = *pp;
- if ((pp = (int *) get_property(dp, "width", &len)) != NULL
- && len == sizeof(int))
+
+ pp = (u32 *)get_property(dp, "linux,bootx-width", &len);
+ if (pp == NULL)
+ pp = (u32 *)get_property(dp, "width", &len);
+ if (pp && len == sizeof(u32))
width = *pp;
- if ((pp = (int *) get_property(dp, "height", &len)) != NULL
- && len == sizeof(int))
+
+ pp = (u32 *)get_property(dp, "linux,bootx-height", &len);
+ if (pp == NULL)
+ pp = (u32 *)get_property(dp, "height", &len);
+ if (pp && len == sizeof(u32))
height = *pp;
- if ((pp = (int *) get_property(dp, "linebytes", &len)) != NULL
- && len == sizeof(int)) {
+
+ pp = (u32 *)get_property(dp, "linux,bootx-linebytes", &len);
+ if (pp == NULL)
+ pp = (u32 *)get_property(dp, "linebytes", &len);
+ if (pp && len == sizeof(u32))
pitch = *pp;
- if (pitch == 1)
- pitch = 0x1000;
- } else
- pitch = width;
-
- rsize = (unsigned long)pitch * (unsigned long)height *
- (unsigned long)(depth / 8);
-
- /* Try to match device to a PCI device in order to get a properly
- * translated address rather then trying to decode the open firmware
- * stuff in various incorrect ways
- */
-#ifdef CONFIG_PCI
- /* First try to locate the PCI device if any */
- {
- struct pci_dev *pdev = NULL;
-
- for_each_pci_dev(pdev) {
- if (dp == pci_device_to_OF_node(pdev))
- break;
- }
- if (pdev) {
- for (i = 0; i < 6 && address == OF_BAD_ADDR; i++) {
- if ((pci_resource_flags(pdev, i) &
- IORESOURCE_MEM) &&
- (pci_resource_len(pdev, i) >= rsize))
- address = pci_resource_start(pdev, i);
- }
- pci_dev_put(pdev);
- }
- }
-#endif /* CONFIG_PCI */
-
- /* This one is dodgy, we may drop it ... */
- if (address == OF_BAD_ADDR &&
- (up = (unsigned *) get_property(dp, "address", &len)) != NULL &&
- len == sizeof(unsigned int))
- address = (u64) * up;
-
- if (address == OF_BAD_ADDR) {
- for (i = 0; (addrp = of_get_address(dp, i, &asize, &flags))
- != NULL; i++) {
- if (!(flags & IORESOURCE_MEM))
- continue;
- if (asize >= pitch * height * depth / 8)
- break;
- }
- if (addrp == NULL) {
- printk(KERN_ERR
- "no framebuffer address found for %s\n",
- dp->full_name);
- return;
- }
- address = of_translate_address(dp, addrp);
- if (address == OF_BAD_ADDR) {
- printk(KERN_ERR
- "can't translate framebuffer address for %s\n",
- dp->full_name);
- return;
+ else
+ pitch = width * ((depth + 7) / 8);
+
+ rsize = (unsigned long)pitch * (unsigned long)height;
+
+ /* Ok, now we try to figure out the address of the framebuffer.
+ *
+ * Unfortunately, Open Firmware doesn't provide a standard way to do
+ * so. All we can do is a dodgy heuristic that happens to work in
+ * practice. On most machines, the "address" property contains what
+ * we need, though not on Matrox cards found in IBM machines. What I've
+ * found that appears to give good results is to go through the PCI
+ * ranges and pick one that is both big enough and if possible encloses
+ * the "address" property. If none match, we pick the biggest
+ */
+ up = (u32 *)get_property(dp, "linux,bootx-addr", &len);
+ if (up == NULL)
+ up = (u32 *)get_property(dp, "address", &len);
+ if (up && len == sizeof(u32))
+ addr_prop = *up;
+
+ for (i = 0; (addrp = of_get_address(dp, i, &asize, &flags))
+ != NULL; i++) {
+ int match_addrp = 0;
+
+ if (!(flags & IORESOURCE_MEM))
+ continue;
+ if (asize < rsize)
+ continue;
+ rstart = of_translate_address(dp, addrp);
+ if (rstart == OF_BAD_ADDR)
+ continue;
+ if (addr_prop && (rstart <= addr_prop) &&
+ ((rstart + asize) >= (addr_prop + rsize)))
+ match_addrp = 1;
+ if (match_addrp) {
+ address = addr_prop;
+ break;
}
+ if (rsize > max_size) {
+ max_size = rsize;
+ address = OF_BAD_ADDR;
+ }
+ if (address == OF_BAD_ADDR)
+ address = rstart;
+ }
+ if (address == OF_BAD_ADDR && addr_prop)
+ address = (u64)addr_prop;
+ if (address != OF_BAD_ADDR) {
/* kludge for valkyrie */
if (strcmp(dp->name, "valkyrie") == 0)
address += 0x1000;
+ offb_init_fb(dp->name, dp->full_name, width, height, depth,
+ pitch, address, dp);
}
- offb_init_fb(dp->name, dp->full_name, width, height, depth,
- pitch, address, dp);
-
}
static void __init offb_init_fb(const char *name, const char *full_name,
@@ -412,7 +354,7 @@ static void __init offb_init_fb(const char *name, const char *full_name,
int pitch, unsigned long address,
struct device_node *dp)
{
- unsigned long res_size = pitch * height * depth / 8;
+ unsigned long res_size = pitch * height * (depth + 7) / 8;
struct offb_par *par = &default_par;
unsigned long res_start = address;
struct fb_fix_screeninfo *fix;
@@ -426,7 +368,7 @@ static void __init offb_init_fb(const char *name, const char *full_name,
printk(KERN_INFO
"Using unsupported %dx%d %s at %lx, depth=%d, pitch=%d\n",
width, height, name, address, depth, pitch);
- if (depth != 8 && depth != 16 && depth != 32) {
+ if (depth != 8 && depth != 15 && depth != 16 && depth != 32) {
printk(KERN_ERR "%s: can't use depth = %d\n", full_name,
depth);
release_mem_region(res_start, res_size);
@@ -502,7 +444,6 @@ static void __init offb_init_fb(const char *name, const char *full_name,
: */ FB_VISUAL_TRUECOLOR;
var->xoffset = var->yoffset = 0;
- var->bits_per_pixel = depth;
switch (depth) {
case 8:
var->bits_per_pixel = 8;
@@ -515,7 +456,7 @@ static void __init offb_init_fb(const char *name, const char *full_name,
var->transp.offset = 0;
var->transp.length = 0;
break;
- case 16: /* RGB 555 */
+ case 15: /* RGB 555 */
var->bits_per_pixel = 16;
var->red.offset = 10;
var->red.length = 5;
@@ -526,6 +467,17 @@ static void __init offb_init_fb(const char *name, const char *full_name,
var->transp.offset = 0;
var->transp.length = 0;
break;
+ case 16: /* RGB 565 */
+ var->bits_per_pixel = 16;
+ var->red.offset = 11;
+ var->red.length = 5;
+ var->green.offset = 5;
+ var->green.length = 6;
+ var->blue.offset = 0;
+ var->blue.length = 5;
+ var->transp.offset = 0;
+ var->transp.length = 0;
+ break;
case 32: /* RGB 888 */
var->bits_per_pixel = 32;
var->red.offset = 16;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-22 01:44:30 +0000