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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Add very basic XVR-1000 framebuffer driver. qlogicpti: Remove slash in QlogicPTI irq name
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Original file line number | Diff line number | Diff line change |
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/* sunxvr1000.c: Sun XVR-1000 driver for sparc64 systems | ||
* | ||
* Copyright (C) 2010 David S. Miller (davem@davemloft.net) | ||
*/ | ||
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#include <linux/module.h> | ||
#include <linux/kernel.h> | ||
#include <linux/slab.h> | ||
#include <linux/fb.h> | ||
#include <linux/init.h> | ||
#include <linux/of_device.h> | ||
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struct gfb_info { | ||
struct fb_info *info; | ||
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char __iomem *fb_base; | ||
unsigned long fb_base_phys; | ||
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struct device_node *of_node; | ||
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unsigned int width; | ||
unsigned int height; | ||
unsigned int depth; | ||
unsigned int fb_size; | ||
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u32 pseudo_palette[16]; | ||
}; | ||
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static int __devinit gfb_get_props(struct gfb_info *gp) | ||
{ | ||
gp->width = of_getintprop_default(gp->of_node, "width", 0); | ||
gp->height = of_getintprop_default(gp->of_node, "height", 0); | ||
gp->depth = of_getintprop_default(gp->of_node, "depth", 32); | ||
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if (!gp->width || !gp->height) { | ||
printk(KERN_ERR "gfb: Critical properties missing for %s\n", | ||
gp->of_node->full_name); | ||
return -EINVAL; | ||
} | ||
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return 0; | ||
} | ||
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static int gfb_setcolreg(unsigned regno, | ||
unsigned red, unsigned green, unsigned blue, | ||
unsigned transp, struct fb_info *info) | ||
{ | ||
u32 value; | ||
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if (regno < 16) { | ||
red >>= 8; | ||
green >>= 8; | ||
blue >>= 8; | ||
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value = (blue << 16) | (green << 8) | red; | ||
((u32 *)info->pseudo_palette)[regno] = value; | ||
} | ||
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return 0; | ||
} | ||
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static struct fb_ops gfb_ops = { | ||
.owner = THIS_MODULE, | ||
.fb_setcolreg = gfb_setcolreg, | ||
.fb_fillrect = cfb_fillrect, | ||
.fb_copyarea = cfb_copyarea, | ||
.fb_imageblit = cfb_imageblit, | ||
}; | ||
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static int __devinit gfb_set_fbinfo(struct gfb_info *gp) | ||
{ | ||
struct fb_info *info = gp->info; | ||
struct fb_var_screeninfo *var = &info->var; | ||
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info->flags = FBINFO_DEFAULT; | ||
info->fbops = &gfb_ops; | ||
info->screen_base = gp->fb_base; | ||
info->screen_size = gp->fb_size; | ||
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info->pseudo_palette = gp->pseudo_palette; | ||
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/* Fill fix common fields */ | ||
strlcpy(info->fix.id, "gfb", sizeof(info->fix.id)); | ||
info->fix.smem_start = gp->fb_base_phys; | ||
info->fix.smem_len = gp->fb_size; | ||
info->fix.type = FB_TYPE_PACKED_PIXELS; | ||
if (gp->depth == 32 || gp->depth == 24) | ||
info->fix.visual = FB_VISUAL_TRUECOLOR; | ||
else | ||
info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | ||
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var->xres = gp->width; | ||
var->yres = gp->height; | ||
var->xres_virtual = var->xres; | ||
var->yres_virtual = var->yres; | ||
var->bits_per_pixel = gp->depth; | ||
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var->red.offset = 0; | ||
var->red.length = 8; | ||
var->green.offset = 8; | ||
var->green.length = 8; | ||
var->blue.offset = 16; | ||
var->blue.length = 8; | ||
var->transp.offset = 0; | ||
var->transp.length = 0; | ||
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if (fb_alloc_cmap(&info->cmap, 256, 0)) { | ||
printk(KERN_ERR "gfb: Cannot allocate color map.\n"); | ||
return -ENOMEM; | ||
} | ||
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return 0; | ||
} | ||
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static int __devinit gfb_probe(struct of_device *op, | ||
const struct of_device_id *match) | ||
{ | ||
struct device_node *dp = op->node; | ||
struct fb_info *info; | ||
struct gfb_info *gp; | ||
int err; | ||
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info = framebuffer_alloc(sizeof(struct gfb_info), &op->dev); | ||
if (!info) { | ||
printk(KERN_ERR "gfb: Cannot allocate fb_info\n"); | ||
err = -ENOMEM; | ||
goto err_out; | ||
} | ||
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gp = info->par; | ||
gp->info = info; | ||
gp->of_node = dp; | ||
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gp->fb_base_phys = op->resource[6].start; | ||
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err = gfb_get_props(gp); | ||
if (err) | ||
goto err_release_fb; | ||
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/* Framebuffer length is the same regardless of resolution. */ | ||
info->fix.line_length = 16384; | ||
gp->fb_size = info->fix.line_length * gp->height; | ||
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gp->fb_base = of_ioremap(&op->resource[6], 0, | ||
gp->fb_size, "gfb fb"); | ||
if (!gp->fb_base) | ||
goto err_release_fb; | ||
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err = gfb_set_fbinfo(gp); | ||
if (err) | ||
goto err_unmap_fb; | ||
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printk("gfb: Found device at %s\n", dp->full_name); | ||
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err = register_framebuffer(info); | ||
if (err < 0) { | ||
printk(KERN_ERR "gfb: Could not register framebuffer %s\n", | ||
dp->full_name); | ||
goto err_unmap_fb; | ||
} | ||
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dev_set_drvdata(&op->dev, info); | ||
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return 0; | ||
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err_unmap_fb: | ||
of_iounmap(&op->resource[6], gp->fb_base, gp->fb_size); | ||
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err_release_fb: | ||
framebuffer_release(info); | ||
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err_out: | ||
return err; | ||
} | ||
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static int __devexit gfb_remove(struct of_device *op) | ||
{ | ||
struct fb_info *info = dev_get_drvdata(&op->dev); | ||
struct gfb_info *gp = info->par; | ||
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unregister_framebuffer(info); | ||
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iounmap(gp->fb_base); | ||
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of_iounmap(&op->resource[6], gp->fb_base, gp->fb_size); | ||
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framebuffer_release(info); | ||
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dev_set_drvdata(&op->dev, NULL); | ||
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return 0; | ||
} | ||
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static const struct of_device_id gfb_match[] = { | ||
{ | ||
.name = "SUNW,gfb", | ||
}, | ||
{}, | ||
}; | ||
MODULE_DEVICE_TABLE(of, ffb_match); | ||
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static struct of_platform_driver gfb_driver = { | ||
.name = "gfb", | ||
.match_table = gfb_match, | ||
.probe = gfb_probe, | ||
.remove = __devexit_p(gfb_remove), | ||
}; | ||
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static int __init gfb_init(void) | ||
{ | ||
if (fb_get_options("gfb", NULL)) | ||
return -ENODEV; | ||
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return of_register_driver(&gfb_driver, &of_bus_type); | ||
} | ||
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static void __exit gfb_exit(void) | ||
{ | ||
of_unregister_driver(&gfb_driver); | ||
} | ||
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module_init(gfb_init); | ||
module_exit(gfb_exit); | ||
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MODULE_DESCRIPTION("framebuffer driver for Sun XVR-1000 graphics"); | ||
MODULE_AUTHOR("David S. Miller <davem@davemloft.net>"); | ||
MODULE_VERSION("1.0"); | ||
MODULE_LICENSE("GPL"); |