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SubjectSGI Visual Workstation fbdev patch

This ports the SGI Visual Workstation fbdev driver to use the
framebuffer_alloc/release api. Please try it.

--- linus-2.6/drivers/video/sgivwfb.c 2004-02-18 20:59:08.000000000 -0800
+++ fbdev-2.6/drivers/video/sgivwfb.c 2004-02-19 16:11:44.000000000 -0800
@@ -22,7 +22,7 @@
#include <asm/mtrr.h>

#define INCLUDE_TIMING_TABLE_DATA
-#define DBE_REG_BASE default_par.regs
+#define DBE_REG_BASE par->regs
#include <video/sgivw.h>

struct sgivw_par {
@@ -44,9 +44,6 @@
extern unsigned long sgivwfb_mem_phys;
extern unsigned long sgivwfb_mem_size;

-static struct sgivw_par default_par;
-static u32 pseudo_palette[17];
-static struct fb_info fb_info;
static int ypan = 0;
static int ywrap = 0;

@@ -162,7 +159,7 @@
* console.
*/

-static void dbe_TurnOffDma(void)
+static void dbe_TurnOffDma(struct sgivw_par *par)
{
unsigned int readVal;
int i;
@@ -367,7 +364,7 @@
/*
* Setup flatpanel related registers.
*/
-static void sgivwfb_setup_flatpanel(struct dbe_timing_info *currentTiming)
+static void sgivwfb_setup_flatpanel(struct sgivw_par *par, struct dbe_timing_info *currentTiming)
{
int fp_wid, fp_hgt, fp_vbs, fp_vbe;
u32 outputVal = 0;
@@ -429,7 +426,7 @@
/* Turn on dotclock PLL */
DBE_SETREG(ctrlstat, 0x20000000);

- dbe_TurnOffDma();
+ dbe_TurnOffDma(par);

/* dbe_CalculateScreenParams(); */
maxPixelsPerTileX = 512 / bytesPerPixel;
@@ -453,7 +450,7 @@
DBE_SETREG(vt_xy, 0x00000000);
udelay(1);
} else
- dbe_TurnOffDma();
+ dbe_TurnOffDma(par);

/* dbe_Initdbe(); */
for (i = 0; i < 256; i++) {
@@ -567,7 +564,7 @@
DBE_SETREG(vt_hcmap, outputVal);

if (flatpanel_id != -1)
- sgivwfb_setup_flatpanel(currentTiming);
+ sgivwfb_setup_flatpanel(par, currentTiming);

outputVal = 0;
temp = currentTiming->vblank_start - currentTiming->vblank_end - 1;
@@ -752,16 +749,30 @@
/*
* Initialisation
*/
-int __init sgivwfb_init(void)
+static void sgivwfb_release(struct device *device)
+{
+}
+
+static int __init sgivwfb_probe(struct device *device)
{
+ struct platform_device *dev = to_platform_device(device);
+ struct sgivw_par *par;
+ struct fb_info *info;
char *monitor;

+ info = framebuffer_alloc(sizeof(struct sgivw_par) + sizeof(u32) * 256, &dev->dev);
+ if (!info)
+ return -ENOMEM;
+ par = info->par;
+
if (!request_mem_region(DBE_REG_PHYS, DBE_REG_SIZE, "sgivwfb")) {
printk(KERN_ERR "sgivwfb: couldn't reserve mmio region\n");
+ framebuffer_release(info);
return -EBUSY;
}
- default_par.regs = (struct asregs *) ioremap_nocache(DBE_REG_PHYS, DBE_REG_SIZE);
- if (!default_par.regs) {
+
+ par->regs = (struct asregs *) ioremap_nocache(DBE_REG_PHYS, DBE_REG_SIZE);
+ if (!par->regs) {
printk(KERN_ERR "sgivwfb: couldn't ioremap registers\n");
goto fail_ioremap_regs;
}
@@ -773,66 +784,110 @@
sgivwfb_fix.ywrapstep = ywrap;
sgivwfb_fix.ypanstep = ypan;

- fb_info.fix = sgivwfb_fix;
+ info->fix = sgivwfb_fix;

switch (flatpanel_id) {
case FLATPANEL_SGI_1600SW:
- fb_info.var = sgivwfb_var1600sw;
+ info->var = sgivwfb_var1600sw;
monitor = "SGI 1600SW flatpanel";
break;
default:
- fb_info.var = sgivwfb_var;
+ info->var = sgivwfb_var;
monitor = "CRT";
}

printk(KERN_INFO "sgivwfb: %s monitor selected\n", monitor);

- fb_info.fbops = &sgivwfb_ops;
- fb_info.pseudo_palette = pseudo_palette;
- fb_info.par = &default_par;
- fb_info.flags = FBINFO_FLAG_DEFAULT;
+ info->fbops = &sgivwfb_ops;
+ info->pseudo_palette = (void *) (par + 1);
+ info->flags = FBINFO_FLAG_DEFAULT;

- fb_info.screen_base = ioremap_nocache((unsigned long) sgivwfb_mem_phys, sgivwfb_mem_size);
- if (!fb_info.screen_base) {
+ info->screen_base = ioremap_nocache((unsigned long) sgivwfb_mem_phys, sgivwfb_mem_size);
+ if (!info->screen_base) {
printk(KERN_ERR "sgivwfb: couldn't ioremap screen_base\n");
goto fail_ioremap_fbmem;
}

- fb_alloc_cmap(&fb_info.cmap, 256, 0);
+ if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
+ goto fail_color_map;

- if (register_framebuffer(&fb_info) < 0) {
+ if (register_framebuffer(info) < 0) {
printk(KERN_ERR "sgivwfb: couldn't register framebuffer\n");
goto fail_register_framebuffer;
}

+ dev_set_drvdata(&dev->dev, info);
+
printk(KERN_INFO "fb%d: SGI DBE frame buffer device, using %ldK of video memory at %#lx\n",
- fb_info.node, sgivwfb_mem_size >> 10, sgivwfb_mem_phys);
+ info->node, sgivwfb_mem_size >> 10, sgivwfb_mem_phys);
return 0;
-
+
fail_register_framebuffer:
- iounmap((char *) fb_info.screen_base);
+ fb_dealloc_cmap(&info->cmap);
+fail_color_map:
+ iounmap((char *) info->screen_base);
fail_ioremap_fbmem:
- iounmap(default_par.regs);
+ iounmap(par->regs);
fail_ioremap_regs:
release_mem_region(DBE_REG_PHYS, DBE_REG_SIZE);
+ framebuffer_release(info);
return -ENXIO;
}

-#ifdef MODULE
-MODULE_LICENSE("GPL");
+static int sgivwfb_remove(struct device *device)
+{
+ struct fb_info *info = dev_get_drvdata(device);
+
+ if (info) {
+ struct sgivw_par *par = info->par;
+
+ unregister_framebuffer(info);
+ dbe_TurnOffDma(par);
+ iounmap(par->regs);
+ iounmap(info->screen_base);
+ release_mem_region(DBE_REG_PHYS, DBE_REG_SIZE);
+ }
+ return 0;
+}
+
+static struct device_driver sgivwfb_driver = {
+ .name = "sgivwfb",
+ .bus = &platform_bus_type,
+ .probe = sgivwfb_probe,
+ .remove = sgivwfb_remove,
+};
+
+static struct platform_device sgivwfb_device = {
+ .name = "sgivwfb",
+ .id = 0,
+ .dev = {
+ .release = sgivwfb_release,
+ }
+};

-int init_module(void)
+int __init sgivwfb_init(void)
{
- return sgivwfb_init();
+ int ret;
+
+ ret = driver_register(&sgivwfb_driver);
+ if (!ret) {
+ ret = platform_device_register(&sgivwfb_device);
+ if (ret)
+ driver_unregister(&sgivwfb_driver);
+ }
+ return ret;
}

-void cleanup_module(void)
+#ifdef MODULE
+MODULE_LICENSE("GPL");
+
+static void __exit sgivwfb_exit(void)
{
- unregister_framebuffer(&fb_info);
- dbe_TurnOffDma();
- iounmap(regs);
- iounmap(&fb_info.screen_base);
- release_mem_region(DBE_REG_PHYS, DBE_REG_SIZE);
+ platform_device_unregister(&sgivwfb_device);
+ driver_unregister(&sgivwfb_driver);
}

+module_init(sgivwfb_init);
+module_exit(sgivwfb_exit);
+
#endif /* MODULE */

-
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