Merge branch 'intelfb-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied...

[pandora-kernel.git] / drivers / video / intelfb / intelfbhw.c

diff --git a/drivers/video/intelfb/intelfbhw.c b/drivers/video/intelfb/intelfbhw.c
index 1a698a7..f887f1e 100644 (file)
--- a/drivers/video/intelfb/intelfbhw.c
+++ b/drivers/video/intelfb/intelfbhw.c
@@ -19,13 +19,11 @@
 
 /* $DHD: intelfb/intelfbhw.c,v 1.9 2003/06/27 15:06:25 dawes Exp $ */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/string.h>
 #include <linux/mm.h>
-#include <linux/tty.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/fb.h>
@@ -371,7 +369,13 @@ intelfbhw_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 
        offset += dinfo->fb.offset << 12;
 
-       OUTREG(DSPABASE, offset);
+       dinfo->vsync.pan_offset = offset;
+       if ((var->activate & FB_ACTIVATE_VBL) && !intelfbhw_enable_irq(dinfo, 0)) {
+               dinfo->vsync.pan_display = 1;
+       } else {
+               dinfo->vsync.pan_display = 0;
+               OUTREG(DSPABASE, offset);
+       }
 
        return 0;
 }
@@ -621,6 +625,7 @@ static int calc_vclock(int index, int m1, int m2, int n, int p1, int p2, int lvd
        return vco / p;
 }
 
+#if REGDUMP
 static void
 intelfbhw_get_p1p2(struct intelfb_info *dinfo, int dpll, int *o_p1, int *o_p2)
 {
@@ -646,6 +651,7 @@ intelfbhw_get_p1p2(struct intelfb_info *dinfo, int dpll, int *o_p1, int *o_p2)
        *o_p1 = p1;
        *o_p2 = p2;
 }
+#endif
 
 
 void
@@ -1965,6 +1971,10 @@ intelfbhw_irq(int irq, void *dev_id, struct pt_regs *fp) {
 
        if (tmp & VSYNC_PIPE_A_INTERRUPT) {
                dinfo->vsync.count++;
+               if (dinfo->vsync.pan_display) {
+                       dinfo->vsync.pan_display = 0;
+                       OUTREG(DSPABASE, dinfo->vsync.pan_offset);
+               }
                wake_up_interruptible(&dinfo->vsync.wait);
                handled = 1;
        }
@@ -2007,6 +2017,10 @@ intelfbhw_disable_irq(struct intelfb_info *dinfo) {
        u16 tmp;
 
        if (test_and_clear_bit(0, &dinfo->irq_flags)) {
+               if (dinfo->vsync.pan_display) {
+                       dinfo->vsync.pan_display = 0;
+                       OUTREG(DSPABASE, dinfo->vsync.pan_offset);
+               }
                spin_lock_irq(&dinfo->int_lock);
                OUTREG16(HWSTAM, 0xffff);
                OUTREG16(IMR, 0xffff);
@@ -2019,3 +2033,36 @@ intelfbhw_disable_irq(struct intelfb_info *dinfo) {
                free_irq(dinfo->pdev->irq, dinfo);
        }
 }
+
+int
+intelfbhw_wait_for_vsync(struct intelfb_info *dinfo, u32 pipe) {
+       struct intelfb_vsync *vsync;
+       unsigned int count;
+       int ret;
+
+       switch (pipe) {
+               case 0:
+                       vsync = &dinfo->vsync;
+                       break;
+               default:
+                       return -ENODEV;
+       }
+
+       ret = intelfbhw_enable_irq(dinfo, 0);
+       if (ret) {
+               return ret;
+       }
+
+       count = vsync->count;
+       ret = wait_event_interruptible_timeout(vsync->wait, count != vsync->count, HZ/10);
+       if (ret < 0) {
+               return ret;
+       }
+       if (ret == 0) {
+               intelfbhw_enable_irq(dinfo, 1);
+               DBG_MSG("wait_for_vsync timed out!\n");
+               return -ETIMEDOUT;
+       }
+
+       return 0;
+}