diff options
Diffstat (limited to 'drivers/video/fbdev/matrox/matroxfb_crtc2.c')
| -rw-r--r-- | drivers/video/fbdev/matrox/matroxfb_crtc2.c | 739 |
1 files changed, 739 insertions, 0 deletions
diff --git a/drivers/video/fbdev/matrox/matroxfb_crtc2.c b/drivers/video/fbdev/matrox/matroxfb_crtc2.c new file mode 100644 index 000000000000..02796a4317a9 --- /dev/null +++ b/drivers/video/fbdev/matrox/matroxfb_crtc2.c @@ -0,0 +1,739 @@ +/* + * + * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200, G400 and G450. + * + * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz> + * + * Portions Copyright (c) 2001 Matrox Graphics Inc. + * + * Version: 1.65 2002/08/14 + * + */ + +#include "matroxfb_maven.h" +#include "matroxfb_crtc2.h" +#include "matroxfb_misc.h" +#include "matroxfb_DAC1064.h" +#include <linux/matroxfb.h> +#include <linux/slab.h> +#include <linux/uaccess.h> + +/* **************************************************** */ + +static int mem = 8192; + +module_param(mem, int, 0); +MODULE_PARM_DESC(mem, "Memory size reserved for dualhead (default=8MB)"); + +/* **************************************************** */ + +static int matroxfb_dh_setcolreg(unsigned regno, unsigned red, unsigned green, + unsigned blue, unsigned transp, struct fb_info* info) { + u_int32_t col; +#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) + + if (regno >= 16) + return 1; + if (m2info->fbcon.var.grayscale) { + /* gray = 0.30*R + 0.59*G + 0.11*B */ + red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8; + } + red = CNVT_TOHW(red, m2info->fbcon.var.red.length); + green = CNVT_TOHW(green, m2info->fbcon.var.green.length); + blue = CNVT_TOHW(blue, m2info->fbcon.var.blue.length); + transp = CNVT_TOHW(transp, m2info->fbcon.var.transp.length); + + col = (red << m2info->fbcon.var.red.offset) | + (green << m2info->fbcon.var.green.offset) | + (blue << m2info->fbcon.var.blue.offset) | + (transp << m2info->fbcon.var.transp.offset); + + switch (m2info->fbcon.var.bits_per_pixel) { + case 16: + m2info->cmap[regno] = col | (col << 16); + break; + case 32: + m2info->cmap[regno] = col; + break; + } + return 0; +#undef m2info +} + +static void matroxfb_dh_restore(struct matroxfb_dh_fb_info* m2info, + struct my_timming* mt, + int mode, + unsigned int pos) { + u_int32_t tmp; + u_int32_t datactl; + struct matrox_fb_info *minfo = m2info->primary_dev; + + switch (mode) { + case 15: + tmp = 0x00200000; + break; + case 16: + tmp = 0x00400000; + break; +/* case 32: */ + default: + tmp = 0x00800000; + break; + } + tmp |= 0x00000001; /* enable CRTC2 */ + datactl = 0; + if (minfo->outputs[1].src == MATROXFB_SRC_CRTC2) { + if (minfo->devflags.g450dac) { + tmp |= 0x00000006; /* source from secondary pixel PLL */ + /* no vidrst when in monitor mode */ + if (minfo->outputs[1].mode != MATROXFB_OUTPUT_MODE_MONITOR) { + tmp |= 0xC0001000; /* Enable H/V vidrst */ + } + } else { + tmp |= 0x00000002; /* source from VDOCLK */ + tmp |= 0xC0000000; /* enable vvidrst & hvidrst */ + /* MGA TVO is our clock source */ + } + } else if (minfo->outputs[0].src == MATROXFB_SRC_CRTC2) { + tmp |= 0x00000004; /* source from pixclock */ + /* PIXPLL is our clock source */ + } + if (minfo->outputs[0].src == MATROXFB_SRC_CRTC2) { + tmp |= 0x00100000; /* connect CRTC2 to DAC */ + } + if (mt->interlaced) { + tmp |= 0x02000000; /* interlaced, second field is bigger, as G450 apparently ignores it */ + mt->VDisplay >>= 1; + mt->VSyncStart >>= 1; + mt->VSyncEnd >>= 1; + mt->VTotal >>= 1; + } + if ((mt->HTotal & 7) == 2) { + datactl |= 0x00000010; + mt->HTotal &= ~7; + } + tmp |= 0x10000000; /* 0x10000000 is VIDRST polarity */ + mga_outl(0x3C14, ((mt->HDisplay - 8) << 16) | (mt->HTotal - 8)); + mga_outl(0x3C18, ((mt->HSyncEnd - 8) << 16) | (mt->HSyncStart - 8)); + mga_outl(0x3C1C, ((mt->VDisplay - 1) << 16) | (mt->VTotal - 1)); + mga_outl(0x3C20, ((mt->VSyncEnd - 1) << 16) | (mt->VSyncStart - 1)); + mga_outl(0x3C24, ((mt->VSyncStart) << 16) | (mt->HSyncStart)); /* preload */ + { + u_int32_t linelen = m2info->fbcon.var.xres_virtual * (m2info->fbcon.var.bits_per_pixel >> 3); + if (tmp & 0x02000000) { + /* field #0 is smaller, so... */ + mga_outl(0x3C2C, pos); /* field #1 vmemory start */ + mga_outl(0x3C28, pos + linelen); /* field #0 vmemory start */ + linelen <<= 1; + m2info->interlaced = 1; + } else { + mga_outl(0x3C28, pos); /* vmemory start */ + m2info->interlaced = 0; + } + mga_outl(0x3C40, linelen); + } + mga_outl(0x3C4C, datactl); /* data control */ + if (tmp & 0x02000000) { + int i; + + mga_outl(0x3C10, tmp & ~0x02000000); + for (i = 0; i < 2; i++) { + unsigned int nl; + unsigned int lastl = 0; + + while ((nl = mga_inl(0x3C48) & 0xFFF) >= lastl) { + lastl = nl; + } + } + } + mga_outl(0x3C10, tmp); + minfo->hw.crtc2.ctl = tmp; + + tmp = mt->VDisplay << 16; /* line compare */ + if (mt->sync & FB_SYNC_HOR_HIGH_ACT) + tmp |= 0x00000100; + if (mt->sync & FB_SYNC_VERT_HIGH_ACT) + tmp |= 0x00000200; + mga_outl(0x3C44, tmp); +} + +static void matroxfb_dh_disable(struct matroxfb_dh_fb_info* m2info) { + struct matrox_fb_info *minfo = m2info->primary_dev; + + mga_outl(0x3C10, 0x00000004); /* disable CRTC2, CRTC1->DAC1, PLL as clock source */ + minfo->hw.crtc2.ctl = 0x00000004; +} + +static void matroxfb_dh_pan_var(struct matroxfb_dh_fb_info* m2info, + struct fb_var_screeninfo* var) { + unsigned int pos; + unsigned int linelen; + unsigned int pixelsize; + struct matrox_fb_info *minfo = m2info->primary_dev; + + m2info->fbcon.var.xoffset = var->xoffset; + m2info->fbcon.var.yoffset = var->yoffset; + pixelsize = m2info->fbcon.var.bits_per_pixel >> 3; + linelen = m2info->fbcon.var.xres_virtual * pixelsize; + pos = m2info->fbcon.var.yoffset * linelen + m2info->fbcon.var.xoffset * pixelsize; + pos += m2info->video.offbase; + if (m2info->interlaced) { + mga_outl(0x3C2C, pos); + mga_outl(0x3C28, pos + linelen); + } else { + mga_outl(0x3C28, pos); + } +} + +static int matroxfb_dh_decode_var(struct matroxfb_dh_fb_info* m2info, + struct fb_var_screeninfo* var, + int *visual, + int *video_cmap_len, + int *mode) { + unsigned int mask; + unsigned int memlen; + unsigned int vramlen; + + switch (var->bits_per_pixel) { + case 16: mask = 0x1F; + break; + case 32: mask = 0x0F; + break; + default: return -EINVAL; + } + vramlen = m2info->video.len_usable; + if (var->yres_virtual < var->yres) + var->yres_virtual = var->yres; + if (var->xres_virtual < var->xres) + var->xres_virtual = var->xres; + var->xres_virtual = (var->xres_virtual + mask) & ~mask; + if (var->yres_virtual > 32767) + return -EINVAL; + memlen = var->xres_virtual * var->yres_virtual * (var->bits_per_pixel >> 3); + if (memlen > vramlen) + return -EINVAL; + if (var->xoffset + var->xres > var->xres_virtual) + var->xoffset = var->xres_virtual - var->xres; + if (var->yoffset + var->yres > var->yres_virtual) + var->yoffset = var->yres_virtual - var->yres; + + var->xres &= ~7; + var->left_margin &= ~7; + var->right_margin &= ~7; + var->hsync_len &= ~7; + + *mode = var->bits_per_pixel; + if (var->bits_per_pixel == 16) { + if (var->green.length == 5) { + var->red.offset = 10; + var->red.length = 5; + var->green.offset = 5; + var->green.length = 5; + var->blue.offset = 0; + var->blue.length = 5; + var->transp.offset = 15; + var->transp.length = 1; + *mode = 15; + } else { + var->red.offset = 11; + var->red.length = 5; + var->green.offset = 5; + var->green.length = 6; + var->blue.offset = 0; + var->blue.length = 5; + var->transp.offset = 0; + var->transp.length = 0; + } + } else { + var->red.offset = 16; + var->red.length = 8; + var->green.offset = 8; + var->green.length = 8; + var->blue.offset = 0; + var->blue.length = 8; + var->transp.offset = 24; + var->transp.length = 8; + } + *visual = FB_VISUAL_TRUECOLOR; + *video_cmap_len = 16; + return 0; +} + +static int matroxfb_dh_open(struct fb_info* info, int user) { +#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) + struct matrox_fb_info *minfo = m2info->primary_dev; + + if (minfo) { + int err; + + if (minfo->dead) { + return -ENXIO; + } + err = minfo->fbops.fb_open(&minfo->fbcon, user); + if (err) { + return err; + } + } + return 0; +#undef m2info +} + +static int matroxfb_dh_release(struct fb_info* info, int user) { +#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) + int err = 0; + struct matrox_fb_info *minfo = m2info->primary_dev; + + if (minfo) { + err = minfo->fbops.fb_release(&minfo->fbcon, user); + } + return err; +#undef m2info +} + +/* + * This function is called before the register_framebuffer so + * no locking is needed. + */ +static void matroxfb_dh_init_fix(struct matroxfb_dh_fb_info *m2info) +{ + struct fb_fix_screeninfo *fix = &m2info->fbcon.fix; + + strcpy(fix->id, "MATROX DH"); + + fix->smem_start = m2info->video.base; + fix->smem_len = m2info->video.len_usable; + fix->ypanstep = 1; + fix->ywrapstep = 0; + fix->xpanstep = 8; /* TBD */ + fix->mmio_start = m2info->mmio.base; + fix->mmio_len = m2info->mmio.len; + fix->accel = 0; /* no accel... */ +} + +static int matroxfb_dh_check_var(struct fb_var_screeninfo* var, struct fb_info* info) { +#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) + int visual; + int cmap_len; + int mode; + + return matroxfb_dh_decode_var(m2info, var, &visual, &cmap_len, &mode); +#undef m2info +} + +static int matroxfb_dh_set_par(struct fb_info* info) { +#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) + int visual; + int cmap_len; + int mode; + int err; + struct fb_var_screeninfo* var = &info->var; + struct matrox_fb_info *minfo = m2info->primary_dev; + + if ((err = matroxfb_dh_decode_var(m2info, var, &visual, &cmap_len, &mode)) != 0) + return err; + /* cmap */ + { + m2info->fbcon.screen_base = vaddr_va(m2info->video.vbase); + m2info->fbcon.fix.visual = visual; + m2info->fbcon.fix.type = FB_TYPE_PACKED_PIXELS; + m2info->fbcon.fix.type_aux = 0; + m2info->fbcon.fix.line_length = (var->xres_virtual * var->bits_per_pixel) >> 3; + } + { + struct my_timming mt; + unsigned int pos; + int out; + int cnt; + + matroxfb_var2my(&m2info->fbcon.var, &mt); + mt.crtc = MATROXFB_SRC_CRTC2; + /* CRTC2 delay */ + mt.delay = 34; + + pos = (m2info->fbcon.var.yoffset * m2info->fbcon.var.xres_virtual + m2info->fbcon.var.xoffset) * m2info->fbcon.var.bits_per_pixel >> 3; + pos += m2info->video.offbase; + cnt = 0; + down_read(&minfo->altout.lock); + for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { + if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) { + cnt++; + if (minfo->outputs[out].output->compute) { + minfo->outputs[out].output->compute(minfo->outputs[out].data, &mt); + } + } + } + minfo->crtc2.pixclock = mt.pixclock; + minfo->crtc2.mnp = mt.mnp; + up_read(&minfo->altout.lock); + if (cnt) { + matroxfb_dh_restore(m2info, &mt, mode, pos); + } else { + matroxfb_dh_disable(m2info); + } + DAC1064_global_init(minfo); + DAC1064_global_restore(minfo); + down_read(&minfo->altout.lock); + for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { + if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2 && + minfo->outputs[out].output->program) { + minfo->outputs[out].output->program(minfo->outputs[out].data); + } + } + for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { + if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2 && + minfo->outputs[out].output->start) { + minfo->outputs[out].output->start(minfo->outputs[out].data); + } + } + up_read(&minfo->altout.lock); + } + m2info->initialized = 1; + return 0; +#undef m2info +} + +static int matroxfb_dh_pan_display(struct fb_var_screeninfo* var, struct fb_info* info) { +#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) + matroxfb_dh_pan_var(m2info, var); + return 0; +#undef m2info +} + +static int matroxfb_dh_get_vblank(const struct matroxfb_dh_fb_info* m2info, struct fb_vblank* vblank) { + struct matrox_fb_info *minfo = m2info->primary_dev; + + matroxfb_enable_irq(minfo, 0); + memset(vblank, 0, sizeof(*vblank)); + vblank->flags = FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VBLANK; + /* mask out reserved bits + field number (odd/even) */ + vblank->vcount = mga_inl(0x3C48) & 0x000007FF; + /* compatibility stuff */ + if (vblank->vcount >= m2info->fbcon.var.yres) + vblank->flags |= FB_VBLANK_VBLANKING; + if (test_bit(0, &minfo->irq_flags)) { + vblank->flags |= FB_VBLANK_HAVE_COUNT; + /* Only one writer, aligned int value... + it should work without lock and without atomic_t */ + vblank->count = minfo->crtc2.vsync.cnt; + } + return 0; +} + +static int matroxfb_dh_ioctl(struct fb_info *info, + unsigned int cmd, + unsigned long arg) +{ +#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) + struct matrox_fb_info *minfo = m2info->primary_dev; + + DBG(__func__) + + switch (cmd) { + case FBIOGET_VBLANK: + { + struct fb_vblank vblank; + int err; + + err = matroxfb_dh_get_vblank(m2info, &vblank); + if (err) + return err; + if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank))) + return -EFAULT; + return 0; + } + case FBIO_WAITFORVSYNC: + { + u_int32_t crt; + + if (get_user(crt, (u_int32_t __user *)arg)) + return -EFAULT; + + if (crt != 0) + return -ENODEV; + return matroxfb_wait_for_sync(minfo, 1); + } + case MATROXFB_SET_OUTPUT_MODE: + case MATROXFB_GET_OUTPUT_MODE: + case MATROXFB_GET_ALL_OUTPUTS: + { + return minfo->fbcon.fbops->fb_ioctl(&minfo->fbcon, cmd, arg); + } + case MATROXFB_SET_OUTPUT_CONNECTION: + { + u_int32_t tmp; + int out; + int changes; + + if (get_user(tmp, (u_int32_t __user *)arg)) + return -EFAULT; + for (out = 0; out < 32; out++) { + if (tmp & (1 << out)) { + if (out >= MATROXFB_MAX_OUTPUTS) + return -ENXIO; + if (!minfo->outputs[out].output) + return -ENXIO; + switch (minfo->outputs[out].src) { + case MATROXFB_SRC_NONE: + case MATROXFB_SRC_CRTC2: + break; + default: + return -EBUSY; + } + } + } + if (minfo->devflags.panellink) { + if (tmp & MATROXFB_OUTPUT_CONN_DFP) + return -EINVAL; + if ((minfo->outputs[2].src == MATROXFB_SRC_CRTC1) && tmp) + return -EBUSY; + } + changes = 0; + for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { + if (tmp & (1 << out)) { + if (minfo->outputs[out].src != MATROXFB_SRC_CRTC2) { + changes = 1; + minfo->outputs[out].src = MATROXFB_SRC_CRTC2; + } + } else if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) { + changes = 1; + minfo->outputs[out].src = MATROXFB_SRC_NONE; + } + } + if (!changes) + return 0; + matroxfb_dh_set_par(info); + return 0; + } + case MATROXFB_GET_OUTPUT_CONNECTION: + { + u_int32_t conn = 0; + int out; + + for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { + if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) { + conn |= 1 << out; + } + } + if (put_user(conn, (u_int32_t __user *)arg)) + return -EFAULT; + return 0; + } + case MATROXFB_GET_AVAILABLE_OUTPUTS: + { + u_int32_t tmp = 0; + int out; + + for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { + if (minfo->outputs[out].output) { + switch (minfo->outputs[out].src) { + case MATROXFB_SRC_NONE: + case MATROXFB_SRC_CRTC2: + tmp |= 1 << out; + break; + } + } + } + if (minfo->devflags.panellink) { + tmp &= ~MATROXFB_OUTPUT_CONN_DFP; + if (minfo->outputs[2].src == MATROXFB_SRC_CRTC1) { + tmp = 0; + } + } + if (put_user(tmp, (u_int32_t __user *)arg)) + return -EFAULT; + return 0; + } + } + return -ENOTTY; +#undef m2info +} + +static int matroxfb_dh_blank(int blank, struct fb_info* info) { +#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) + switch (blank) { + case 1: + case 2: + case 3: + case 4: + default:; + } + /* do something... */ + return 0; +#undef m2info +} + +static struct fb_ops matroxfb_dh_ops = { + .owner = THIS_MODULE, + .fb_open = matroxfb_dh_open, + .fb_release = matroxfb_dh_release, + .fb_check_var = matroxfb_dh_check_var, + .fb_set_par = matroxfb_dh_set_par, + .fb_setcolreg = matroxfb_dh_setcolreg, + .fb_pan_display =matroxfb_dh_pan_display, + .fb_blank = matroxfb_dh_blank, + .fb_ioctl = matroxfb_dh_ioctl, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, +}; + +static struct fb_var_screeninfo matroxfb_dh_defined = { + 640,480,640,480,/* W,H, virtual W,H */ + 0,0, /* offset */ + 32, /* depth */ + 0, /* gray */ + {0,0,0}, /* R */ + {0,0,0}, /* G */ + {0,0,0}, /* B */ + {0,0,0}, /* alpha */ + 0, /* nonstd */ + FB_ACTIVATE_NOW, + -1,-1, /* display size */ + 0, /* accel flags */ + 39721L,48L,16L,33L,10L, + 96L,2,0, /* no sync info */ + FB_VMODE_NONINTERLACED, +}; + +static int matroxfb_dh_regit(const struct matrox_fb_info *minfo, + struct matroxfb_dh_fb_info *m2info) +{ +#define minfo (m2info->primary_dev) + void* oldcrtc2; + + m2info->fbcon.fbops = &matroxfb_dh_ops; + m2info->fbcon.flags = FBINFO_FLAG_DEFAULT; + m2info->fbcon.flags |= FBINFO_HWACCEL_XPAN | + FBINFO_HWACCEL_YPAN; + m2info->fbcon.pseudo_palette = m2info->cmap; + fb_alloc_cmap(&m2info->fbcon.cmap, 256, 1); + + if (mem < 64) + mem *= 1024; + if (mem < 64*1024) + mem *= 1024; + mem &= ~0x00000FFF; /* PAGE_MASK? */ + if (minfo->video.len_usable + mem <= minfo->video.len) + m2info->video.offbase = minfo->video.len - mem; + else if (minfo->video.len < mem) { + return -ENOMEM; + } else { /* check yres on first head... */ + m2info->video.borrowed = mem; + minfo->video.len_usable -= mem; + m2info->video.offbase = minfo->video.len_usable; + } + m2info->video.base = minfo->video.base + m2info->video.offbase; + m2info->video.len = m2info->video.len_usable = m2info->video.len_maximum = mem; + m2info->video.vbase.vaddr = vaddr_va(minfo->video.vbase) + m2info->video.offbase; + m2info->mmio.base = minfo->mmio.base; + m2info->mmio.vbase = minfo->mmio.vbase; + m2info->mmio.len = minfo->mmio.len; + + matroxfb_dh_init_fix(m2info); + if (register_framebuffer(&m2info->fbcon)) { + return -ENXIO; + } + if (!m2info->initialized) + fb_set_var(&m2info->fbcon, &matroxfb_dh_defined); + down_write(&minfo->crtc2.lock); + oldcrtc2 = minfo->crtc2.info; + minfo->crtc2.info = m2info; + up_write(&minfo->crtc2.lock); + if (oldcrtc2) { + printk(KERN_ERR "matroxfb_crtc2: Internal consistency check failed: crtc2 already present: %p\n", + oldcrtc2); + } + return 0; +#undef minfo +} + +/* ************************** */ + +static int matroxfb_dh_registerfb(struct matroxfb_dh_fb_info* m2info) { +#define minfo (m2info->primary_dev) + if (matroxfb_dh_regit(minfo, m2info)) { + printk(KERN_ERR "matroxfb_crtc2: secondary head failed to register\n"); + return -1; + } + printk(KERN_INFO "matroxfb_crtc2: secondary head of fb%u was registered as fb%u\n", + minfo->fbcon.node, m2info->fbcon.node); + m2info->fbcon_registered = 1; + return 0; +#undef minfo +} + +static void matroxfb_dh_deregisterfb(struct matroxfb_dh_fb_info* m2info) { +#define minfo (m2info->primary_dev) + if (m2info->fbcon_registered) { + int id; + struct matroxfb_dh_fb_info* crtc2; + + down_write(&minfo->crtc2.lock); + crtc2 = minfo->crtc2.info; + if (crtc2 == m2info) + minfo->crtc2.info = NULL; + up_write(&minfo->crtc2.lock); + if (crtc2 != m2info) { + printk(KERN_ERR "matroxfb_crtc2: Internal consistency check failed: crtc2 mismatch at unload: %p != %p\n", + crtc2, m2info); + printk(KERN_ERR "matroxfb_crtc2: Expect kernel crash after module unload.\n"); + return; + } + id = m2info->fbcon.node; + unregister_framebuffer(&m2info->fbcon); + /* return memory back to primary head */ + minfo->video.len_usable += m2info->video.borrowed; + printk(KERN_INFO "matroxfb_crtc2: fb%u unregistered\n", id); + m2info->fbcon_registered = 0; + } +#undef minfo +} + +static void* matroxfb_crtc2_probe(struct matrox_fb_info* minfo) { + struct matroxfb_dh_fb_info* m2info; + + /* hardware is CRTC2 incapable... */ + if (!minfo->devflags.crtc2) + return NULL; + m2info = kzalloc(sizeof(*m2info), GFP_KERNEL); + if (!m2info) { + printk(KERN_ERR "matroxfb_crtc2: Not enough memory for CRTC2 control structs\n"); + return NULL; + } + m2info->primary_dev = minfo; + if (matroxfb_dh_registerfb(m2info)) { + kfree(m2info); + printk(KERN_ERR "matroxfb_crtc2: CRTC2 framebuffer failed to register\n"); + return NULL; + } + return m2info; +} + +static void matroxfb_crtc2_remove(struct matrox_fb_info* minfo, void* crtc2) { + matroxfb_dh_deregisterfb(crtc2); + kfree(crtc2); +} + +static struct matroxfb_driver crtc2 = { + .name = "Matrox G400 CRTC2", + .probe = matroxfb_crtc2_probe, + .remove = matroxfb_crtc2_remove }; + +static int matroxfb_crtc2_init(void) { + if (fb_get_options("matrox_crtc2fb", NULL)) + return -ENODEV; + + matroxfb_register_driver(&crtc2); + return 0; +} + +static void matroxfb_crtc2_exit(void) { + matroxfb_unregister_driver(&crtc2); +} + +MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>"); +MODULE_DESCRIPTION("Matrox G400 CRTC2 driver"); +MODULE_LICENSE("GPL"); +module_init(matroxfb_crtc2_init); +module_exit(matroxfb_crtc2_exit); +/* we do not have __setup() yet */ |
