V4L/DVB (6346): ivtvfb: YUV output size fix when ivtvfb is not loaded
[safe/jmp/linux-2.6] / drivers / media / video / ivtv / ivtv-yuv.c
index 13c3582..9091c48 100644 (file)
@@ -857,95 +857,101 @@ void ivtv_yuv_work_handler (struct ivtv *itv)
 
 static void ivtv_yuv_init (struct ivtv *itv)
 {
+       struct yuv_playback_info *yi = &itv->yuv_info;
+
        IVTV_DEBUG_YUV("ivtv_yuv_init\n");
 
        /* Take a snapshot of the current register settings */
-       itv->yuv_info.reg_2834 = read_reg(0x02834);
-       itv->yuv_info.reg_2838 = read_reg(0x02838);
-       itv->yuv_info.reg_283c = read_reg(0x0283c);
-       itv->yuv_info.reg_2840 = read_reg(0x02840);
-       itv->yuv_info.reg_2844 = read_reg(0x02844);
-       itv->yuv_info.reg_2848 = read_reg(0x02848);
-       itv->yuv_info.reg_2854 = read_reg(0x02854);
-       itv->yuv_info.reg_285c = read_reg(0x0285c);
-       itv->yuv_info.reg_2864 = read_reg(0x02864);
-       itv->yuv_info.reg_2870 = read_reg(0x02870);
-       itv->yuv_info.reg_2874 = read_reg(0x02874);
-       itv->yuv_info.reg_2898 = read_reg(0x02898);
-       itv->yuv_info.reg_2890 = read_reg(0x02890);
-
-       itv->yuv_info.reg_289c = read_reg(0x0289c);
-       itv->yuv_info.reg_2918 = read_reg(0x02918);
-       itv->yuv_info.reg_291c = read_reg(0x0291c);
-       itv->yuv_info.reg_2920 = read_reg(0x02920);
-       itv->yuv_info.reg_2924 = read_reg(0x02924);
-       itv->yuv_info.reg_2928 = read_reg(0x02928);
-       itv->yuv_info.reg_292c = read_reg(0x0292c);
-       itv->yuv_info.reg_2930 = read_reg(0x02930);
-       itv->yuv_info.reg_2934 = read_reg(0x02934);
-       itv->yuv_info.reg_2938 = read_reg(0x02938);
-       itv->yuv_info.reg_293c = read_reg(0x0293c);
-       itv->yuv_info.reg_2940 = read_reg(0x02940);
-       itv->yuv_info.reg_2944 = read_reg(0x02944);
-       itv->yuv_info.reg_2948 = read_reg(0x02948);
-       itv->yuv_info.reg_294c = read_reg(0x0294c);
-       itv->yuv_info.reg_2950 = read_reg(0x02950);
-       itv->yuv_info.reg_2954 = read_reg(0x02954);
-       itv->yuv_info.reg_2958 = read_reg(0x02958);
-       itv->yuv_info.reg_295c = read_reg(0x0295c);
-       itv->yuv_info.reg_2960 = read_reg(0x02960);
-       itv->yuv_info.reg_2964 = read_reg(0x02964);
-       itv->yuv_info.reg_2968 = read_reg(0x02968);
-       itv->yuv_info.reg_296c = read_reg(0x0296c);
-       itv->yuv_info.reg_2970 = read_reg(0x02970);
-
-       itv->yuv_info.v_filter_1 = -1;
-       itv->yuv_info.v_filter_2 = -1;
-       itv->yuv_info.h_filter = -1;
+       yi->reg_2834 = read_reg(0x02834);
+       yi->reg_2838 = read_reg(0x02838);
+       yi->reg_283c = read_reg(0x0283c);
+       yi->reg_2840 = read_reg(0x02840);
+       yi->reg_2844 = read_reg(0x02844);
+       yi->reg_2848 = read_reg(0x02848);
+       yi->reg_2854 = read_reg(0x02854);
+       yi->reg_285c = read_reg(0x0285c);
+       yi->reg_2864 = read_reg(0x02864);
+       yi->reg_2870 = read_reg(0x02870);
+       yi->reg_2874 = read_reg(0x02874);
+       yi->reg_2898 = read_reg(0x02898);
+       yi->reg_2890 = read_reg(0x02890);
+
+       yi->reg_289c = read_reg(0x0289c);
+       yi->reg_2918 = read_reg(0x02918);
+       yi->reg_291c = read_reg(0x0291c);
+       yi->reg_2920 = read_reg(0x02920);
+       yi->reg_2924 = read_reg(0x02924);
+       yi->reg_2928 = read_reg(0x02928);
+       yi->reg_292c = read_reg(0x0292c);
+       yi->reg_2930 = read_reg(0x02930);
+       yi->reg_2934 = read_reg(0x02934);
+       yi->reg_2938 = read_reg(0x02938);
+       yi->reg_293c = read_reg(0x0293c);
+       yi->reg_2940 = read_reg(0x02940);
+       yi->reg_2944 = read_reg(0x02944);
+       yi->reg_2948 = read_reg(0x02948);
+       yi->reg_294c = read_reg(0x0294c);
+       yi->reg_2950 = read_reg(0x02950);
+       yi->reg_2954 = read_reg(0x02954);
+       yi->reg_2958 = read_reg(0x02958);
+       yi->reg_295c = read_reg(0x0295c);
+       yi->reg_2960 = read_reg(0x02960);
+       yi->reg_2964 = read_reg(0x02964);
+       yi->reg_2968 = read_reg(0x02968);
+       yi->reg_296c = read_reg(0x0296c);
+       yi->reg_2970 = read_reg(0x02970);
+
+       yi->v_filter_1 = -1;
+       yi->v_filter_2 = -1;
+       yi->h_filter = -1;
 
        /* Set some valid size info */
-       itv->yuv_info.osd_x_offset = read_reg(0x02a04) & 0x00000FFF;
-       itv->yuv_info.osd_y_offset = (read_reg(0x02a04) >> 16) & 0x00000FFF;
+       yi->osd_x_offset = read_reg(0x02a04) & 0x00000FFF;
+       yi->osd_y_offset = (read_reg(0x02a04) >> 16) & 0x00000FFF;
 
        /* Bit 2 of reg 2878 indicates current decoder output format
           0 : NTSC    1 : PAL */
        if (read_reg(0x2878) & 4)
-               itv->yuv_info.decode_height = 576;
+               yi->decode_height = 576;
        else
-               itv->yuv_info.decode_height = 480;
-
-       /* If no visible size set, assume full size */
-       if (!itv->yuv_info.osd_vis_w)
-               itv->yuv_info.osd_vis_w = 720 - itv->yuv_info.osd_x_offset;
+               yi->decode_height = 480;
 
-       if (!itv->yuv_info.osd_vis_h) {
-               itv->yuv_info.osd_vis_h = itv->yuv_info.decode_height - itv->yuv_info.osd_y_offset;
+       if (!itv->osd_info) {
+               yi->osd_vis_w = 720 - yi->osd_x_offset;
+               yi->osd_vis_h = yi->decode_height - yi->osd_y_offset;
        } else {
-               /* If output video standard has changed, requested height may
-               not be legal */
-               if (itv->yuv_info.osd_vis_h + itv->yuv_info.osd_y_offset > itv->yuv_info.decode_height) {
-                       IVTV_DEBUG_WARN("Clipping yuv output - fb size (%d) exceeds video standard limit (%d)\n",
-                                       itv->yuv_info.osd_vis_h + itv->yuv_info.osd_y_offset,
-                                       itv->yuv_info.decode_height);
-                       itv->yuv_info.osd_vis_h = itv->yuv_info.decode_height - itv->yuv_info.osd_y_offset;
+               /* If no visible size set, assume full size */
+               if (!yi->osd_vis_w)
+                       yi->osd_vis_w = 720 - yi->osd_x_offset;
+
+               if (!yi->osd_vis_h)
+                       yi->osd_vis_h = yi->decode_height - yi->osd_y_offset;
+               else {
+                       /* If output video standard has changed, requested height may
+                       not be legal */
+                       if (yi->osd_vis_h + yi->osd_y_offset > yi->decode_height) {
+                               IVTV_DEBUG_WARN("Clipping yuv output - fb size (%d) exceeds video standard limit (%d)\n",
+                                               yi->osd_vis_h + yi->osd_y_offset,
+                                               yi->decode_height);
+                               yi->osd_vis_h = yi->decode_height - yi->osd_y_offset;
+                       }
                }
        }
 
        /* We need a buffer for blanking when Y plane is offset - non-fatal if we can't get one */
-       itv->yuv_info.blanking_ptr = kzalloc(720*16,GFP_KERNEL);
-       if (itv->yuv_info.blanking_ptr) {
-               itv->yuv_info.blanking_dmaptr = pci_map_single(itv->dev, itv->yuv_info.blanking_ptr, 720*16, PCI_DMA_TODEVICE);
-       }
+       yi->blanking_ptr = kzalloc(720*16, GFP_KERNEL);
+       if (yi->blanking_ptr)
+               yi->blanking_dmaptr = pci_map_single(itv->dev, yi->blanking_ptr, 720*16, PCI_DMA_TODEVICE);
        else {
-               itv->yuv_info.blanking_dmaptr = 0;
-               IVTV_DEBUG_WARN ("Failed to allocate yuv blanking buffer\n");
+               yi->blanking_dmaptr = 0;
+               IVTV_DEBUG_WARN("Failed to allocate yuv blanking buffer\n");
        }
 
        /* Enable YUV decoder output */
        write_reg_sync(0x01, IVTV_REG_VDM);
 
        set_bit(IVTV_F_I_DECODING_YUV, &itv->i_flags);
-       atomic_set(&itv->yuv_info.next_dma_frame,0);
+       atomic_set(&yi->next_dma_frame, 0);
 }
 
 int ivtv_yuv_prep_frame(struct ivtv *itv, struct ivtv_dma_frame *args)