Commit b98fc9a3 authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds

[PATCH] sstfb: cleanups

- Remove 24/32bit unused support (the chips don't do 24/32bit anyway)
- Clean up printk obfuscation
- Clean up lispitus in the if(())()) stuff
- Minor tidying

No functionality changes, may have a crack at hardware scrolling based
on my X driver once the cleanups are in.
Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Cc: Antonino A. Daplas <adaplas@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 3cb340ec
......@@ -17,7 +17,10 @@
* (port driver to new frambuffer infrastructure)
* 01/2003 Helge Deller <deller@gmx.de>
* (initial work on fb hardware acceleration for voodoo2)
*
* 08/2006 Alan Cox <alan@redhat.com>
* Remove never finished and bogus 24/32bit support
* Clean up macro abuse
* Minor tidying for format.
*/
/*
......@@ -40,6 +43,7 @@
through the fifo. warning: issuing a nop command seems to need pci_fifo
-FIXME: in case of failure in the init sequence, be sure we return to a safe
state.
- FIXME: Use accelerator for 2D scroll
-FIXME: 4MB boards have banked memory (FbiInit2 bits 1 & 20)
*/
......@@ -67,9 +71,6 @@
#undef SST_DEBUG
/* enable 24/32 bpp functions ? (completely untested!) */
#undef EN_24_32_BPP
/*
Default video mode .
0 800x600@60 took from glide
......@@ -377,7 +378,11 @@ static void sstfb_clear_screen(struct fb_info *info)
* sstfb_check_var - Optional function. Validates a var passed in.
* @var: frame buffer variable screen structure
* @info: frame buffer structure that represents a single frame buffer
*
* Limit to the abilities of a single chip as SLI is not supported
* by this driver.
*/
static int sstfb_check_var(struct fb_var_screeninfo *var,
struct fb_info *info)
{
......@@ -390,7 +395,7 @@ static int sstfb_check_var(struct fb_var_screeninfo *var,
unsigned int freq;
if (sst_calc_pll(PICOS2KHZ(var->pixclock), &freq, &par->pll)) {
eprintk("Pixclock at %ld KHZ out of range\n",
printk(KERN_ERR "sstfb: Pixclock at %ld KHZ out of range\n",
PICOS2KHZ(var->pixclock));
return -EINVAL;
}
......@@ -409,27 +414,15 @@ static int sstfb_check_var(struct fb_var_screeninfo *var,
case 0 ... 16 :
var->bits_per_pixel = 16;
break;
#ifdef EN_24_32_BPP
case 17 ... 24 :
var->bits_per_pixel = 24;
break;
case 25 ... 32 :
var->bits_per_pixel = 32;
break;
#endif
default :
eprintk("Unsupported bpp %d\n", var->bits_per_pixel);
printk(KERN_ERR "sstfb: Unsupported bpp %d\n", var->bits_per_pixel);
return -EINVAL;
}
/* validity tests */
if ((var->xres <= 1) || (yDim <= 0 )
|| (var->hsync_len <= 1)
|| (hSyncOff <= 1)
|| (var->left_margin <= 2)
|| (vSyncOn <= 0)
|| (vSyncOff <= 0)
|| (vBackPorch <= 0)) {
if (var->xres <= 1 || yDim <= 0 || var->hsync_len <= 1 ||
hSyncOff <= 1 || var->left_margin <= 2 || vSyncOn <= 0 ||
vSyncOff <= 0 || vBackPorch <= 0) {
return -EINVAL;
}
......@@ -437,21 +430,17 @@ static int sstfb_check_var(struct fb_var_screeninfo *var,
/* Voodoo 2 limits */
tiles_in_X = (var->xres + 63 ) / 64 * 2;
if (((var->xres - 1) >= POW2(11)) || (yDim >= POW2(11))) {
eprintk("Unsupported resolution %dx%d\n",
if (var->xres > POW2(11) || yDim >= POW2(11)) {
printk(KERN_ERR "sstfb: Unsupported resolution %dx%d\n",
var->xres, var->yres);
return -EINVAL;
}
if (((var->hsync_len-1) >= POW2(9))
|| ((hSyncOff-1) >= POW2(11))
|| ((var->left_margin - 2) >= POW2(9))
|| (vSyncOn >= POW2(13))
|| (vSyncOff >= POW2(13))
|| (vBackPorch >= POW2(9))
|| (tiles_in_X >= POW2(6))
|| (tiles_in_X <= 0)) {
eprintk("Unsupported Timings\n");
if (var->hsync_len > POW2(9) || hSyncOff > POW2(11) ||
var->left_margin - 2 >= POW2(9) || vSyncOn >= POW2(13) ||
vSyncOff >= POW2(13) || vBackPorch >= POW2(9) ||
tiles_in_X >= POW2(6) || tiles_in_X <= 0) {
printk(KERN_ERR "sstfb: Unsupported timings\n");
return -EINVAL;
}
} else {
......@@ -459,24 +448,20 @@ static int sstfb_check_var(struct fb_var_screeninfo *var,
tiles_in_X = (var->xres + 63 ) / 64;
if (var->vmode) {
eprintk("Interlace/Doublescan not supported %#x\n",
printk(KERN_ERR "sstfb: Interlace/doublescan not supported %#x\n",
var->vmode);
return -EINVAL;
}
if (((var->xres - 1) >= POW2(10)) || (var->yres >= POW2(10))) {
eprintk("Unsupported resolution %dx%d\n",
if (var->xres > POW2(10) || var->yres >= POW2(10)) {
printk(KERN_ERR "sstfb: Unsupported resolution %dx%d\n",
var->xres, var->yres);
return -EINVAL;
}
if (((var->hsync_len - 1) >= POW2(8))
|| ((hSyncOff-1) >= POW2(10))
|| ((var->left_margin - 2) >= POW2(8))
|| (vSyncOn >= POW2(12))
|| (vSyncOff >= POW2(12))
|| (vBackPorch >= POW2(8))
|| (tiles_in_X >= POW2(4))
|| (tiles_in_X <= 0)) {
eprintk("Unsupported Timings\n");
if (var->hsync_len > POW2(8) || hSyncOff - 1 > POW2(10) ||
var->left_margin - 2 >= POW2(8) || vSyncOn >= POW2(12) ||
vSyncOff >= POW2(12) || vBackPorch >= POW2(8) ||
tiles_in_X >= POW2(4) || tiles_in_X <= 0) {
printk(KERN_ERR "sstfb: Unsupported timings\n");
return -EINVAL;
}
}
......@@ -486,8 +471,8 @@ static int sstfb_check_var(struct fb_var_screeninfo *var,
real_length = tiles_in_X * (IS_VOODOO2(par) ? 32 : 64 )
* ((var->bits_per_pixel == 16) ? 2 : 4);
if ((real_length * yDim) > info->fix.smem_len) {
eprintk("Not enough video memory\n");
if (real_length * yDim > info->fix.smem_len) {
printk(KERN_ERR "sstfb: Not enough video memory\n");
return -ENOMEM;
}
......@@ -515,20 +500,6 @@ static int sstfb_check_var(struct fb_var_screeninfo *var,
var->blue.offset = 0;
var->transp.offset = 0;
break;
#ifdef EN_24_32_BPP
case 24: /* RGB 888 LfbMode 4 */
case 32: /* ARGB 8888 LfbMode 5 */
var->red.length = 8;
var->green.length = 8;
var->blue.length = 8;
var->transp.length = 0;
var->red.offset = 16;
var->green.offset = 8;
var->blue.offset = 0;
var->transp.offset = 0; /* in 24bpp we fake a 32 bpp mode */
break;
#endif
default:
return -EINVAL;
}
......@@ -653,13 +624,6 @@ static int sstfb_set_par(struct fb_info *info)
case 16:
fbiinit1 |= SEL_SOURCE_VCLK_2X_SEL;
break;
#ifdef EN_24_32_BPP
case 24:
case 32:
/* sst_set_bits(FBIINIT1, SEL_SOURCE_VCLK_2X_DIV2 | EN_24BPP);*/
fbiinit1 |= SEL_SOURCE_VCLK_2X_SEL | EN_24BPP;
break;
#endif
default:
return -EINVAL;
}
......@@ -690,14 +654,6 @@ static int sstfb_set_par(struct fb_info *info)
case 16:
lfbmode = LFB_565;
break;
#ifdef EN_24_32_BPP
case 24:
lfbmode = LFB_888;
break;
case 32:
lfbmode = LFB_8888;
break;
#endif
default:
return -EINVAL;
}
......@@ -789,8 +745,7 @@ static int sstfb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
return -EFAULT;
if (val > info->fix.smem_len)
val = info->fix.smem_len;
printk("filling %#x \n", val);
for (p=0 ; p<val; p+=2)
for (p = 0 ; p < val; p += 2)
writew(p >> 6, info->screen_base + p);
return 0;
......@@ -802,13 +757,10 @@ static int sstfb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
pci_write_config_dword(sst_dev, PCI_INIT_ENABLE,
tmp | PCI_EN_INIT_WR );
fbiinit0 = sst_read (FBIINIT0);
if (val) {
if (val)
sst_write(FBIINIT0, fbiinit0 & ~EN_VGA_PASSTHROUGH);
iprintk("Disabling VGA pass-through\n");
} else {
else
sst_write(FBIINIT0, fbiinit0 | EN_VGA_PASSTHROUGH);
iprintk("Enabling VGA pass-through\n");
}
pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, tmp);
return 0;
......@@ -884,9 +836,9 @@ static int __devinit sst_get_memsize(struct fb_info *info, __u32 *memsize)
u8 __iomem *fbbase_virt = info->screen_base;
/* force memsize */
if ((mem >= 1 ) && (mem <= 4)) {
if (mem >= 1 && mem <= 4) {
*memsize = (mem * 0x100000);
iprintk("supplied memsize: %#x\n", *memsize);
printk(KERN_INFO "supplied memsize: %#x\n", *memsize);
return 1;
}
......@@ -927,7 +879,7 @@ static int __devinit sst_detect_att(struct fb_info *info)
struct sstfb_par *par = info->par;
int i, mir, dir;
for (i=0; i<3; i++) {
for (i = 0; i < 3; i++) {
sst_dac_write(DACREG_WMA, 0); /* backdoor */
sst_dac_read(DACREG_RMR); /* read 4 times RMR */
sst_dac_read(DACREG_RMR);
......@@ -940,7 +892,7 @@ static int __devinit sst_detect_att(struct fb_info *info)
/*the 7th, device ID register */
dir = sst_dac_read(DACREG_RMR);
f_ddprintk("mir: %#x, dir: %#x\n", mir, dir);
if ((mir == DACREG_MIR_ATT ) && (dir == DACREG_DIR_ATT)) {
if (mir == DACREG_MIR_ATT && dir == DACREG_DIR_ATT) {
return 1;
}
}
......@@ -1134,12 +1086,6 @@ static void sst_set_vidmod_att_ti(struct fb_info *info, const int bpp)
case 16:
sst_dac_write(DACREG_RMR, (cr0 & 0x0f) | DACREG_CR0_16BPP);
break;
#ifdef EN_24_32_BPP
case 24:
case 32:
sst_dac_write(DACREG_RMR, (cr0 & 0x0f) | DACREG_CR0_24BPP);
break;
#endif
default:
dprintk("%s: bad depth '%u'\n", __FUNCTION__, bpp);
break;
......@@ -1154,12 +1100,6 @@ static void sst_set_vidmod_ics(struct fb_info *info, const int bpp)
case 16:
sst_dac_write(DACREG_ICS_CMD, DACREG_ICS_CMD_16BPP);
break;
#ifdef EN_24_32_BPP
case 24:
case 32:
sst_dac_write(DACREG_ICS_CMD, DACREG_ICS_CMD_24BPP);
break;
#endif
default:
dprintk("%s: bad depth '%u'\n", __FUNCTION__, bpp);
break;
......@@ -1250,7 +1190,7 @@ static int __devinit sst_init(struct fb_info *info, struct sstfb_par *par)
PCI_EN_INIT_WR | PCI_REMAP_DAC );
/* detect dac type */
if (!sst_detect_dactype(info, par)) {
eprintk("Unknown dac type\n");
printk(KERN_ERR "sstfb: unknown dac type.\n");
//FIXME watch it: we are not in a safe state, bad bad bad.
return 0;
}
......@@ -1258,10 +1198,10 @@ static int __devinit sst_init(struct fb_info *info, struct sstfb_par *par)
/* set graphic clock */
par->gfx_clock = spec->default_gfx_clock;
if ((gfxclk >10 ) && (gfxclk < spec->max_gfxclk)) {
iprintk("Using supplied graphic freq : %dMHz\n", gfxclk);
printk(KERN_INFO "sstfb: Using supplied graphic freq : %dMHz\n", gfxclk);
par->gfx_clock = gfxclk *1000;
} else if (gfxclk) {
wprintk ("%dMhz is way out of spec! Using default\n", gfxclk);
printk(KERN_WARNING "sstfb: %dMhz is way out of spec! Using default\n", gfxclk);
}
sst_calc_pll(par->gfx_clock, &Fout, &gfx_timings);
......@@ -1396,7 +1336,7 @@ static int __devinit sstfb_probe(struct pci_dev *pdev,
/* Enable device in PCI config. */
if ((err=pci_enable_device(pdev))) {
eprintk("cannot enable device\n");
printk(KERN_ERR "cannot enable device\n");
return err;
}
......@@ -1422,39 +1362,39 @@ static int __devinit sstfb_probe(struct pci_dev *pdev,
fix->smem_start = fix->mmio_start + 0x400000;
if (!request_mem_region(fix->mmio_start, fix->mmio_len, "sstfb MMIO")) {
eprintk("cannot reserve mmio memory\n");
printk(KERN_ERR "sstfb: cannot reserve mmio memory\n");
goto fail_mmio_mem;
}
if (!request_mem_region(fix->smem_start, 0x400000,"sstfb FB")) {
eprintk("cannot reserve fb memory\n");
printk(KERN_ERR "sstfb: cannot reserve fb memory\n");
goto fail_fb_mem;
}
par->mmio_vbase = ioremap_nocache(fix->mmio_start,
fix->mmio_len);
if (!par->mmio_vbase) {
eprintk("cannot remap register area %#lx\n",
printk(KERN_ERR "sstfb: cannot remap register area %#lx\n",
fix->mmio_start);
goto fail_mmio_remap;
}
info->screen_base = ioremap_nocache(fix->smem_start, 0x400000);
if (!info->screen_base) {
eprintk("cannot remap framebuffer %#lx\n",
printk(KERN_ERR "sstfb: cannot remap framebuffer %#lx\n",
fix->smem_start);
goto fail_fb_remap;
}
if (!sst_init(info, par)) {
eprintk("Init failed\n");
printk(KERN_ERR "sstfb: Init failed\n");
goto fail;
}
sst_get_memsize(info, &fix->smem_len);
strlcpy(fix->id, spec->name, sizeof(fix->id));
iprintk("%s (revision %d) with %s dac\n",
printk(KERN_INFO "%s (revision %d) with %s dac\n",
fix->id, par->revision, par->dac_sw.name);
iprintk("framebuffer at %#lx, mapped to 0x%p, size %dMB\n",
printk(KERN_INFO "framebuffer at %#lx, mapped to 0x%p, size %dMB\n",
fix->smem_start, info->screen_base,
fix->smem_len >> 20);
......@@ -1471,24 +1411,25 @@ static int __devinit sstfb_probe(struct pci_dev *pdev,
fix->accel = FB_ACCEL_NONE; /* FIXME */
/*
* According to the specs, the linelength must be of 1024 *pixels*
* and the 24bpp mode is in fact a 32 bpp mode.
* and the 24bpp mode is in fact a 32 bpp mode (and both are in
* fact dithered to 16bit).
*/
fix->line_length = 2048; /* default value, for 24 or 32bit: 4096 */
if ( mode_option &&
fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 16)) {
eprintk("can't set supplied video mode. Using default\n");
printk(KERN_ERR "sstfb: can't set supplied video mode. Using default\n");
info->var = sstfb_default;
} else
info->var = sstfb_default;
if (sstfb_check_var(&info->var, info)) {
eprintk("invalid default video mode.\n");
printk(KERN_ERR "sstfb: invalid default video mode.\n");
goto fail;
}
if (sstfb_set_par(info)) {
eprintk("can't set default video mode.\n");
printk(KERN_ERR "sstfb: can't set default video mode.\n");
goto fail;
}
......@@ -1497,7 +1438,7 @@ static int __devinit sstfb_probe(struct pci_dev *pdev,
/* register fb */
info->device = &pdev->dev;
if (register_framebuffer(info) < 0) {
eprintk("can't register framebuffer.\n");
printk(KERN_ERR "sstfb: can't register framebuffer.\n");
goto fail;
}
......@@ -1711,4 +1652,3 @@ module_param(gfxclk, int, 0);
MODULE_PARM_DESC(gfxclk, "Force graphic chip frequency in MHz. DANGEROUS. (default=auto)");
module_param(slowpci, bool, 0);
MODULE_PARM_DESC(slowpci, "Uses slow PCI settings (0 or 1) (default=0)");
......@@ -68,10 +68,6 @@
# define print_var(X,Y...)
#endif
#define eprintk(X...) printk(KERN_ERR "sstfb: " X)
#define iprintk(X...) printk(KERN_INFO "sstfb: " X)
#define wprintk(X...) printk(KERN_WARNING "sstfb: " X)
#define BIT(x) (1ul<<(x))
#define POW2(x) (1ul<<(x))
......
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