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[PATCH] sstfb: add sysfs interface

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Modify the sstfb (Voodoo1/2) driver:

- fix a memleak when removing the sstfb module

- fix sstfb to use the fbdev default videomode database

- add module option "mode_option" to set initial screen mode

- add sysfs-interface to turn VGA-passthrough on/off via
  /sys/class/graphics/fbX/vgapass

- remove old debug functions from ioctl interface

Signed-off-by: Helge Deller <deller@gmx.de>
Acked-By: James Simmons <jsimmons@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Helge Deller 2006-12-13 00:35:55 -08:00 committed by Linus Torvalds
parent 3161986224
commit 0743b86800
2 changed files with 114 additions and 234 deletions
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335
drivers/video/sstfb.c
View file

@ -21,6 +21,11 @@
* Remove never finished and bogus 24/32bit support
* Clean up macro abuse
* Minor tidying for format.
* 12/2006 Helge Deller <deller@gmx.de>
* add /sys/class/graphics/fbX/vgapass sysfs-interface
* add module option "mode_option" to set initial screen mode
* use fbdev default videomode database
* remove debug functions from ioctl
*/
/*
@ -65,19 +70,10 @@
*
* sstfb specific ioctls:
* toggle vga (0x46db) : toggle vga_pass_through
* fill fb (0x46dc) : fills fb
* test disp (0x46de) : draws a test image
*/
#undef SST_DEBUG
/*
Default video mode .
0 800x600@60 took from glide
1 640x480@75 took from glide
2 1024x768@76 std fb.mode
3 640x480@60 glide default */
#define DEFAULT_MODE 3
/*
* Includes
@ -92,20 +88,24 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <asm/ioctl.h>
#include <asm/uaccess.h>
#include <video/sstfb.h>
/* initialized by setup */
static int vgapass; /* enable Vga passthrough cable */
static int vgapass; /* enable VGA passthrough cable */
static int mem; /* mem size in MB, 0 = autodetect */
static int clipping = 1; /* use clipping (slower, safer) */
static int gfxclk; /* force FBI freq in Mhz . Dangerous */
static int slowpci; /* slow PCI settings */
static char *mode_option __devinitdata;
/*
Possible default video modes: 800x600@60, 640x480@75, 1024x768@76, 640x480@60
*/
#define DEFAULT_VIDEO_MODE "640x480@60"
static char *mode_option __devinitdata = DEFAULT_VIDEO_MODE;
enum {
ID_VOODOO1 = 0,
@ -119,48 +119,11 @@ static struct sst_spec voodoo_spec[] __devinitdata = {
{ .name = "Voodoo2", .default_gfx_clock = 75000, .max_gfxclk = 85 },
};
static struct fb_var_screeninfo sstfb_default =
#if ( DEFAULT_MODE == 0 )
{ /* 800x600@60, 16 bpp .borowed from glide/sst1/include/sst1init.h */
800, 600, 800, 600, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, 0,
25000, 86, 41, 23, 1, 127, 4,
0, FB_VMODE_NONINTERLACED };
#elif ( DEFAULT_MODE == 1 )
{/* 640x480@75, 16 bpp .borowed from glide/sst1/include/sst1init.h */
640, 480, 640, 480, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, 0,
31746, 118, 17, 16, 1, 63, 3,
0, FB_VMODE_NONINTERLACED };
#elif ( DEFAULT_MODE == 2 )
{ /* 1024x768@76 took from my /etc/fb.modes */
1024, 768, 1024, 768,0, 0, 16,0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, 0,
11764, 208, 8, 36, 16, 120, 3 ,
0, FB_VMODE_NONINTERLACED };
#elif ( DEFAULT_MODE == 3 )
{ /* 640x480@60 , 16bpp glide default ?*/
640, 480, 640, 480, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, 0,
39721 , 38, 26 , 25 ,18 , 96 ,2,
0, FB_VMODE_NONINTERLACED };
#elif
#error "Invalid DEFAULT_MODE value !"
#endif
/*
* debug functions
*/
static void sstfb_drawdebugimage(struct fb_info *info);
static int sstfb_dump_regs(struct fb_info *info);
#if (SST_DEBUG_REG > 0)
static void sst_dbg_print_read_reg(u32 reg, u32 val) {
const char *regname;
@ -726,51 +689,77 @@ static int sstfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
return 0;
}
static int sstfb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
static void sstfb_setvgapass( struct fb_info *info, int enable )
{
struct sstfb_par *par = info->par;
struct pci_dev *sst_dev = par->dev;
u32 fbiinit0, tmp, val;
u_long p;
u32 fbiinit0, tmp;
enable = enable ? 1:0;
if (par->vgapass == enable)
return;
par->vgapass = enable;
pci_read_config_dword(sst_dev, PCI_INIT_ENABLE, &tmp);
pci_write_config_dword(sst_dev, PCI_INIT_ENABLE,
tmp | PCI_EN_INIT_WR );
fbiinit0 = sst_read (FBIINIT0);
if (par->vgapass) {
sst_write(FBIINIT0, fbiinit0 & ~DIS_VGA_PASSTHROUGH);
printk(KERN_INFO "fb%d: Enabling VGA pass-through\n", info->node );
} else {
sst_write(FBIINIT0, fbiinit0 | DIS_VGA_PASSTHROUGH);
printk(KERN_INFO "fb%d: Disabling VGA pass-through\n", info->node );
}
pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, tmp);
}
static ssize_t store_vgapass(struct device *device, struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *info = dev_get_drvdata(device);
char ** last = NULL;
int val;
val = simple_strtoul(buf, last, 0);
sstfb_setvgapass(info, val);
return count;
}
static ssize_t show_vgapass(struct device *device, struct device_attribute *attr,
char *buf)
{
struct fb_info *info = dev_get_drvdata(device);
struct sstfb_par *par = info->par;
return snprintf(buf, PAGE_SIZE, "%d\n", par->vgapass);
}
static struct device_attribute device_attrs[] = {
__ATTR(vgapass, S_IRUGO|S_IWUSR, show_vgapass, store_vgapass)
};
static int sstfb_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg)
{
struct sstfb_par *par;
u32 val;
switch (cmd) {
/* dump current FBIINIT values to system log */
case _IO('F', 0xdb): /* 0x46db */
return sstfb_dump_regs(info);
/* fills lfb with #arg pixels */
case _IOW('F', 0xdc, u32): /* 0x46dc */
/* set/get VGA pass_through mode */
case SSTFB_SET_VGAPASS:
if (copy_from_user(&val, (void __user *)arg, sizeof(val)))
return -EFAULT;
if (val > info->fix.smem_len)
val = info->fix.smem_len;
for (p = 0 ; p < val; p += 2)
writew(p >> 6, info->screen_base + p);
sstfb_setvgapass(info, val);
return 0;
/* change VGA pass_through mode */
case _IOW('F', 0xdd, u32): /* 0x46dd */
if (copy_from_user(&val, (void __user *)arg, sizeof(val)))
case SSTFB_GET_VGAPASS:
par = info->par;
val = par->vgapass;
if (copy_to_user((void __user *)arg, &val, sizeof(val)))
return -EFAULT;
pci_read_config_dword(sst_dev, PCI_INIT_ENABLE, &tmp);
pci_write_config_dword(sst_dev, PCI_INIT_ENABLE,
tmp | PCI_EN_INIT_WR );
fbiinit0 = sst_read (FBIINIT0);
if (val)
sst_write(FBIINIT0, fbiinit0 & ~EN_VGA_PASSTHROUGH);
else
sst_write(FBIINIT0, fbiinit0 | EN_VGA_PASSTHROUGH);
pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, tmp);
return 0;
/* draw test image */
case _IO('F', 0xde): /* 0x46de */
f_dprintk("test color display at %d bpp\n",
info->var.bits_per_pixel);
sstfb_drawdebugimage(info);
return 0;
}
return -EINVAL;
}
@ -804,6 +793,7 @@ static void sstfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
/*
* FillRect 2D command (solidfill or invert (via ROP_XOR)) - Voodoo2 only
*/
#if 0
static void sstfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
struct sstfb_par *par = info->par;
@ -825,6 +815,7 @@ static void sstfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
| (BLT_16BPP_FMT << 3) /* | BIT(14) */ | BIT(15) | BIT(16) );
sst_wait_idle();
}
#endif
@ -1156,6 +1147,7 @@ static int __devinit sst_init(struct fb_info *info, struct sstfb_par *par)
struct pll_timing gfx_timings;
struct sst_spec *spec;
int Fout;
int gfx_clock;
spec = &voodoo_spec[par->type];
f_ddprintk(" fbiinit0 fbiinit1 fbiinit2 fbiinit3 fbiinit4 "
@ -1196,15 +1188,15 @@ static int __devinit sst_init(struct fb_info *info, struct sstfb_par *par)
}
/* set graphic clock */
par->gfx_clock = spec->default_gfx_clock;
gfx_clock = spec->default_gfx_clock;
if ((gfxclk >10 ) && (gfxclk < spec->max_gfxclk)) {
printk(KERN_INFO "sstfb: Using supplied graphic freq : %dMHz\n", gfxclk);
par->gfx_clock = gfxclk *1000;
gfx_clock = gfxclk *1000;
} else if (gfxclk) {
printk(KERN_WARNING "sstfb: %dMhz is way out of spec! Using default\n", gfxclk);
}
sst_calc_pll(par->gfx_clock, &Fout, &gfx_timings);
sst_calc_pll(gfx_clock, &Fout, &gfx_timings);
par->dac_sw.set_pll(info, &gfx_timings, GFX_CLOCK);
/* disable fbiinit remap */
@ -1215,10 +1207,11 @@ static int __devinit sst_init(struct fb_info *info, struct sstfb_par *par)
fbiinit0 = FBIINIT0_DEFAULT;
fbiinit1 = FBIINIT1_DEFAULT;
fbiinit4 = FBIINIT4_DEFAULT;
if (vgapass)
fbiinit0 &= ~EN_VGA_PASSTHROUGH;
par->vgapass = vgapass;
if (par->vgapass)
fbiinit0 &= ~DIS_VGA_PASSTHROUGH;
else
fbiinit0 |= EN_VGA_PASSTHROUGH;
fbiinit0 |= DIS_VGA_PASSTHROUGH;
if (slowpci) {
fbiinit1 |= SLOW_PCI_WRITES;
fbiinit4 |= SLOW_PCI_READS;
@ -1267,7 +1260,7 @@ static void __devexit sst_shutdown(struct fb_info *info)
/* TODO maybe shutdown the dac, vrefresh and so on... */
pci_write_config_dword(dev, PCI_INIT_ENABLE,
PCI_EN_INIT_WR);
sst_unset_bits(FBIINIT0, FBI_RESET | FIFO_RESET | EN_VGA_PASSTHROUGH);
sst_unset_bits(FBIINIT0, FBI_RESET | FIFO_RESET | DIS_VGA_PASSTHROUGH);
pci_write_config_dword(dev, PCI_VCLK_DISABLE,0);
/* maybe keep fbiinit* and PCI_INIT_enable in the fb_info struct
* from start ? */
@ -1278,8 +1271,7 @@ static void __devexit sst_shutdown(struct fb_info *info)
/*
* Interface to the world
*/
#ifndef MODULE
static int __init sstfb_setup(char *options)
static int __devinit sstfb_setup(char *options)
{
char *this_opt;
@ -1312,7 +1304,7 @@ static int __init sstfb_setup(char *options)
}
return 0;
}
#endif
static struct fb_ops sstfb_ops = {
.owner = THIS_MODULE,
@ -1416,15 +1408,10 @@ static int __devinit sstfb_probe(struct pci_dev *pdev,
*/
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)) {
printk(KERN_ERR "sstfb: can't set supplied video mode. Using default\n");
info->var = sstfb_default;
} else
info->var = sstfb_default;
fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 16);
if (sstfb_check_var(&info->var, info)) {
printk(KERN_ERR "sstfb: invalid default video mode.\n");
printk(KERN_ERR "sstfb: invalid video mode.\n");
goto fail;
}
@ -1442,10 +1429,11 @@ static int __devinit sstfb_probe(struct pci_dev *pdev,
goto fail;
}
if (1) /* set to 0 to see an initial bitmap instead */
sstfb_clear_screen(info);
else
sstfb_drawdebugimage(info);
sstfb_clear_screen(info);
if (device_create_file(info->dev, &device_attrs[0]))
printk(KERN_WARNING "sstfb: can't create sysfs entry.\n");
printk(KERN_INFO "fb%d: %s frame buffer device at 0x%p\n",
info->node, fix->id, info->screen_base);
@ -1453,6 +1441,7 @@ static int __devinit sstfb_probe(struct pci_dev *pdev,
return 0;
fail:
fb_dealloc_cmap(&info->cmap);
iounmap(info->screen_base);
fail_fb_remap:
iounmap(par->mmio_vbase);
@ -1473,21 +1462,23 @@ static void __devexit sstfb_remove(struct pci_dev *pdev)
info = pci_get_drvdata(pdev);
par = info->par;
device_remove_file(info->dev, &device_attrs[0]);
sst_shutdown(info);
unregister_framebuffer(info);
iounmap(info->screen_base);
iounmap(par->mmio_vbase);
release_mem_region(info->fix.smem_start, 0x400000);
release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
fb_dealloc_cmap(&info->cmap);
unregister_framebuffer(info);
framebuffer_release(info);
}
static struct pci_device_id sstfb_id_tbl[] = {
{ PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, ID_VOODOO1 },
{ PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO2,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, ID_VOODOO2 },
static const struct pci_device_id sstfb_id_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO ),
.driver_data = ID_VOODOO1, },
{ PCI_DEVICE(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO2),
.driver_data = ID_VOODOO2, },
{ 0 },
};
@ -1501,142 +1492,23 @@ static struct pci_driver sstfb_driver = {
static int __devinit sstfb_init(void)
{
#ifndef MODULE
char *option = NULL;
if (fb_get_options("sstfb", &option))
return -ENODEV;
sstfb_setup(option);
#endif
return pci_register_driver(&sstfb_driver);
}
#ifdef MODULE
static void __devexit sstfb_exit(void)
{
pci_unregister_driver(&sstfb_driver);
}
#endif
/*
* testing and debugging functions
*/
static int sstfb_dump_regs(struct fb_info *info)
{
#ifdef SST_DEBUG
static struct { u32 reg ; const char *reg_name;} pci_regs[] = {
{ PCI_INIT_ENABLE, "initenable"},
{ PCI_VCLK_ENABLE, "enable vclk"},
{ PCI_VCLK_DISABLE, "disable vclk"},
};
static struct { u32 reg ; const char *reg_name;} sst_regs[] = {
{FBIINIT0,"fbiinit0"},
{FBIINIT1,"fbiinit1"},
{FBIINIT2,"fbiinit2"},
{FBIINIT3,"fbiinit3"},
{FBIINIT4,"fbiinit4"},
{FBIINIT5,"fbiinit5"},
{FBIINIT6,"fbiinit6"},
{FBIINIT7,"fbiinit7"},
{LFBMODE,"lfbmode"},
{FBZMODE,"fbzmode"},
};
const int pci_s = ARRAY_SIZE(pci_regs);
const int sst_s = ARRAY_SIZE(sst_regs);
struct sstfb_par *par = info->par;
struct pci_dev *dev = par->dev;
u32 pci_res[pci_s];
u32 sst_res[sst_s];
int i;
for (i=0; i<pci_s; i++) {
pci_read_config_dword(dev, pci_regs[i].reg, &pci_res[i]);
}
for (i=0; i<sst_s; i++) {
sst_res[i] = sst_read(sst_regs[i].reg);
}
dprintk("hardware register dump:\n");
for (i=0; i<pci_s; i++) {
dprintk("%s %0#10x\n", pci_regs[i].reg_name, pci_res[i]);
}
for (i=0; i<sst_s; i++) {
dprintk("%s %0#10x\n", sst_regs[i].reg_name, sst_res[i]);
}
return 0;
#else
return -EINVAL;
#endif
}
static void sstfb_fillrect_softw( struct fb_info *info, const struct fb_fillrect *rect)
{
u8 __iomem *fbbase_virt = info->screen_base;
int x, y, w = info->var.bits_per_pixel == 16 ? 2 : 4;
u32 color = rect->color, height = rect->height;
u8 __iomem *p;
if (w==2) color |= color<<16;
for (y=rect->dy; height; y++, height--) {
p = fbbase_virt + y*info->fix.line_length + rect->dx*w;
x = rect->width;
if (w==2) x>>=1;
while (x) {
writel(color, p);
p += 4;
x--;
}
}
}
static void sstfb_drawrect_XY( struct fb_info *info, int x, int y,
int w, int h, int color, int hwfunc)
{
struct fb_fillrect rect;
rect.dx = x;
rect.dy = y;
rect.height = h;
rect.width = w;
rect.color = color;
rect.rop = ROP_COPY;
if (hwfunc)
sstfb_fillrect(info, &rect);
else
sstfb_fillrect_softw(info, &rect);
}
/* print some squares on the fb */
static void sstfb_drawdebugimage(struct fb_info *info)
{
static int idx;
/* clear screen */
sstfb_clear_screen(info);
idx = (idx+1) & 1;
/* white rect */
sstfb_drawrect_XY(info, 0, 0, 50, 50, 0xffff, idx);
/* blue rect */
sstfb_drawrect_XY(info, 50, 50, 50, 50, 0x001f, idx);
/* green rect */
sstfb_drawrect_XY(info, 100, 100, 80, 80, 0x07e0, idx);
/* red rect */
sstfb_drawrect_XY(info, 250, 250, 120, 100, 0xf800, idx);
}
module_init(sstfb_init);
#ifdef MODULE
module_exit(sstfb_exit);
#endif
MODULE_AUTHOR("(c) 2000,2002 Ghozlane Toumi <gtoumi@laposte.net>");
MODULE_DESCRIPTION("FBDev driver for 3dfx Voodoo Graphics and Voodoo2 based video boards");
@ -1652,3 +1524,6 @@ 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)");
module_param(mode_option, charp, 0);
MODULE_PARM_DESC(mode_option, "Initial video mode (default=" DEFAULT_VIDEO_MODE ")");

13
include/video/sstfb.h
View file

@ -119,7 +119,7 @@
#define BACKPORCH 0x0208
#define VIDEODIMENSIONS 0x020c
#define FBIINIT0 0x0210 /* misc+fifo controls */
# define EN_VGA_PASSTHROUGH BIT(0)
# define DIS_VGA_PASSTHROUGH BIT(0)
# define FBI_RESET BIT(1)
# define FIFO_RESET BIT(2)
#define FBIINIT1 0x0214 /* PCI + video controls */
@ -251,7 +251,7 @@
# define DACREG_ICS_CLK1_A 0 /* bit4 */
/* sst default init registers */
#define FBIINIT0_DEFAULT EN_VGA_PASSTHROUGH
#define FBIINIT0_DEFAULT DIS_VGA_PASSTHROUGH
#define FBIINIT1_DEFAULT \
( \
@ -296,6 +296,11 @@
*
*/
/* ioctl to enable/disable VGA passthrough */
#define SSTFB_SET_VGAPASS _IOW('F', 0xdd, __u32)
#define SSTFB_GET_VGAPASS _IOR('F', 0xdd, __u32)
/* used to know witch clock to set */
enum {
VID_CLOCK=0,
@ -317,7 +322,7 @@ struct pll_timing {
};
struct dac_switch {
char * name;
const char *name;
int (*detect) (struct fb_info *info);
int (*set_pll) (struct fb_info *info, const struct pll_timing *t, const int clock);
void (*set_vidmod) (struct fb_info *info, const int bpp);
@ -345,7 +350,7 @@ struct sstfb_par {
struct pci_dev *dev;
int type;
u8 revision;
int gfx_clock; /* status */
u8 vgapass; /* VGA pass through: 1=enabled, 0=disabled */
};
#endif /* _SSTFB_H_ */