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path: root/drivers/video/fbdev/matrox/matroxfb_crtc2.c
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Diffstat (limited to 'drivers/video/fbdev/matrox/matroxfb_crtc2.c')
-rw-r--r--drivers/video/fbdev/matrox/matroxfb_crtc2.c739
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 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 01:44:26 +0000