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pm3fb: mtrr support and noaccel option

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This patch adds usage of MTRR registers and two new options: noaccel and
nomtrr.

[bunk@kernel.org: make pm3fb_init() static again]
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Krzysztof Helt
2007-10-16 01:28:33 -07:00
committed by Linus Torvalds
parent 0ddf78491d
commit d5383fcc4c
2 changed files with 118 additions and 2 deletions
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drivers/video/pm2fb.c
+40
View File
@@ -38,6 +38,9 @@
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
#include <video/permedia2.h>
#include <video/cvisionppc.h>
@@ -73,6 +76,11 @@ static char *mode __devinitdata = NULL;
*/
static int lowhsync;
static int lowvsync;
static int noaccel __devinitdata;
/* mtrr option */
#ifdef CONFIG_MTRR
static int nomtrr __devinitdata;
#endif
/*
* The hardware state of the graphics card that isn't part of the
@@ -88,6 +96,7 @@ struct pm2fb_par
u32 mem_control; /* MemControl reg at probe */
u32 boot_address; /* BootAddress reg at probe */
u32 palette[16];
int mtrr_handle;
};
/*
@@ -1316,6 +1325,15 @@ static int __devinit pm2fb_probe(struct pci_dev *pdev,
goto err_exit_mmio;
}
#ifdef CONFIG_MTRR
default_par->mtrr_handle = -1;
if (!nomtrr)
default_par->mtrr_handle =
mtrr_add(pm2fb_fix.smem_start,
pm2fb_fix.smem_len,
MTRR_TYPE_WRCOMB, 1);
#endif
info->fbops = &pm2fb_ops;
info->fix = pm2fb_fix;
info->pseudo_palette = default_par->palette;
@@ -1324,6 +1342,11 @@ static int __devinit pm2fb_probe(struct pci_dev *pdev,
FBINFO_HWACCEL_COPYAREA |
FBINFO_HWACCEL_FILLRECT;
if (noaccel) {
printk(KERN_DEBUG "disabling acceleration\n");
info->flags |= FBINFO_HWACCEL_DISABLED;
}
if (!mode)
mode = "640x480@60";
@@ -1375,6 +1398,11 @@ static void __devexit pm2fb_remove(struct pci_dev *pdev)
unregister_framebuffer(info);
#ifdef CONFIG_MTRR
if (par->mtrr_handle >= 0)
mtrr_del(par->mtrr_handle, info->fix.smem_start,
info->fix.smem_len);
#endif /* CONFIG_MTRR */
iounmap(info->screen_base);
release_mem_region(fix->smem_start, fix->smem_len);
iounmap(par->v_regs);
@@ -1430,6 +1458,12 @@ static int __init pm2fb_setup(char *options)
lowhsync = 1;
} else if(!strcmp(this_opt, "lowvsync")) {
lowvsync = 1;
#ifdef CONFIG_MTRR
} else if (!strncmp(this_opt, "nomtrr", 6)) {
nomtrr = 1;
#endif
} else if (!strncmp(this_opt, "noaccel", 7)) {
noaccel = 1;
} else {
mode = this_opt;
}
@@ -1474,6 +1508,12 @@ module_param(lowhsync, bool, 0);
MODULE_PARM_DESC(lowhsync, "Force horizontal sync low regardless of mode");
module_param(lowvsync, bool, 0);
MODULE_PARM_DESC(lowvsync, "Force vertical sync low regardless of mode");
module_param(noaccel, bool, 0);
MODULE_PARM_DESC(noaccel, "Disable acceleration");
#ifdef CONFIG_MTRR
module_param(nomtrr, bool, 0);
MODULE_PARM_DESC(nomtrr, "Disable MTRR support (0 or 1=disabled) (default=0)");
#endif
MODULE_AUTHOR("Jim Hague <jim.hague@acm.org>");
MODULE_DESCRIPTION("Permedia2 framebuffer device driver");