[PATCH] add imacfb documentation and detection
Add basic Machine detection to imacfb and some Ducumentation bits for
imacfb.
Signed-off-by: Edgar Hucek <hostmaster@ed-soft.at>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/Documentation/fb/imacfb.txt b/Documentation/fb/imacfb.txt
new file mode 100644
index 0000000..7590285
--- /dev/null
+++ b/Documentation/fb/imacfb.txt
@@ -0,0 +1,31 @@
+
+What is imacfb?
+===============
+
+This is a generic EFI platform driver for Intel based Apple computers.
+Imacfb is only for EFI booted Intel Macs.
+
+Supported Hardware
+==================
+
+iMac 17"/20"
+Macbook
+Macbook Pro 15"/17"
+MacMini
+
+How to use it?
+==============
+
+Imacfb does not have any kind of autodetection of your machine.
+You have to add the fillowing kernel parameters in your elilo.conf:
+ Macbook :
+ video=imacfb:macbook
+ MacMini :
+ video=imacfb:mini
+ Macbook Pro 15", iMac 17" :
+ video=imacfb:i17
+ Macbook Pro 17", iMac 20" :
+ video=imacfb:i20
+
+--
+Edgar Hucek <gimli@dark-green.com>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index c40b9b8..702eb93 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -554,7 +554,7 @@
config FB_IMAC
bool "Intel-based Macintosh Framebuffer Support"
- depends on (FB = y) && X86
+ depends on (FB = y) && X86 && EFI
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
diff --git a/drivers/video/imacfb.c b/drivers/video/imacfb.c
index ff233b8..b485bec 100644
--- a/drivers/video/imacfb.c
+++ b/drivers/video/imacfb.c
@@ -18,6 +18,8 @@
#include <linux/screen_info.h>
#include <linux/slab.h>
#include <linux/string.h>
+#include <linux/dmi.h>
+#include <linux/efi.h>
#include <asm/io.h>
@@ -28,7 +30,7 @@
M_I20,
M_MINI,
M_MACBOOK,
- M_NEW
+ M_UNKNOWN
} MAC_TYPE;
/* --------------------------------------------------------------------- */
@@ -52,10 +54,36 @@
};
static int inverse;
-static int model = M_NEW;
+static int model = M_UNKNOWN;
static int manual_height;
static int manual_width;
+static int set_system(struct dmi_system_id *id)
+{
+ printk(KERN_INFO "imacfb: %s detected - set system to %ld\n",
+ id->ident, (long)id->driver_data);
+
+ model = (long)id->driver_data;
+
+ return 0;
+}
+
+static struct dmi_system_id __initdata dmi_system_table[] = {
+ { set_system, "iMac4,1", {
+ DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
+ DMI_MATCH(DMI_BIOS_VERSION,"iMac4,1") }, (void*)M_I17},
+ { set_system, "MacBookPro1,1", {
+ DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
+ DMI_MATCH(DMI_BIOS_VERSION,"MacBookPro1,1") }, (void*)M_I17},
+ { set_system, "MacBook1,1", {
+ DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME,"MacBook1,1")}, (void *)M_MACBOOK},
+ { set_system, "Macmini1,1", {
+ DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME,"Macmini1,1")}, (void *)M_MINI},
+ {},
+};
+
#define DEFAULT_FB_MEM 1024*1024*16
/* --------------------------------------------------------------------- */
@@ -149,7 +177,6 @@
screen_info.lfb_linelength = 1472 * 4;
screen_info.lfb_base = 0x80010000;
break;
- case M_NEW:
case M_I20:
screen_info.lfb_width = 1680;
screen_info.lfb_height = 1050;
@@ -207,6 +234,10 @@
size_remap = size_total;
imacfb_fix.smem_len = size_remap;
+#ifndef __i386__
+ screen_info.imacpm_seg = 0;
+#endif
+
if (!request_mem_region(imacfb_fix.smem_start, size_total, "imacfb")) {
printk(KERN_WARNING
"imacfb: cannot reserve video memory at 0x%lx\n",
@@ -324,8 +355,16 @@
int ret;
char *option = NULL;
- /* ignore error return of fb_get_options */
- fb_get_options("imacfb", &option);
+ if (!efi_enabled)
+ return -ENODEV;
+ if (!dmi_check_system(dmi_system_table))
+ return -ENODEV;
+ if (model == M_UNKNOWN)
+ return -ENODEV;
+
+ if (fb_get_options("imacfb", &option))
+ return -ENODEV;
+
imacfb_setup(option);
ret = platform_driver_register(&imacfb_driver);
