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Diffstat (limited to 'drivers/media/video/ivtv/ivtv-yuv.c')
-rw-r--r--drivers/media/video/ivtv/ivtv-yuv.c1129
1 files changed, 1129 insertions, 0 deletions
diff --git a/drivers/media/video/ivtv/ivtv-yuv.c b/drivers/media/video/ivtv/ivtv-yuv.c
new file mode 100644
index 000000000000..bcea09542e5a
--- /dev/null
+++ b/drivers/media/video/ivtv/ivtv-yuv.c
@@ -0,0 +1,1129 @@
+/*
+ yuv support
+
+ Copyright (C) 2007 Ian Armstrong <ian@iarmst.demon.co.uk>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "ivtv-driver.h"
+#include "ivtv-queue.h"
+#include "ivtv-udma.h"
+#include "ivtv-irq.h"
+#include "ivtv-yuv.h"
+
+static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
+ struct ivtv_dma_frame *args)
+{
+ struct ivtv_dma_page_info y_dma;
+ struct ivtv_dma_page_info uv_dma;
+
+ int i;
+ int y_pages, uv_pages;
+
+ unsigned long y_buffer_offset, uv_buffer_offset;
+ int y_decode_height, uv_decode_height, y_size;
+ int frame = atomic_read(&itv->yuv_info.next_fill_frame);
+
+ y_buffer_offset = IVTV_DEC_MEM_START + yuv_offset[frame];
+ uv_buffer_offset = y_buffer_offset + IVTV_YUV_BUFFER_UV_OFFSET;
+
+ y_decode_height = uv_decode_height = args->src.height + args->src.top;
+
+ if (y_decode_height < 512-16)
+ y_buffer_offset += 720 * 16;
+
+ if (y_decode_height & 15)
+ y_decode_height = (y_decode_height + 16) & ~15;
+
+ if (uv_decode_height & 31)
+ uv_decode_height = (uv_decode_height + 32) & ~31;
+
+ y_size = 720 * y_decode_height;
+
+ /* Still in USE */
+ if (dma->SG_length || dma->page_count) {
+ IVTV_DEBUG_WARN("prep_user_dma: SG_length %d page_count %d still full?\n",
+ dma->SG_length, dma->page_count);
+ return -EBUSY;
+ }
+
+ ivtv_udma_get_page_info (&y_dma, (unsigned long)args->y_source, 720 * y_decode_height);
+ ivtv_udma_get_page_info (&uv_dma, (unsigned long)args->uv_source, 360 * uv_decode_height);
+
+ /* Get user pages for DMA Xfer */
+ down_read(&current->mm->mmap_sem);
+ y_pages = get_user_pages(current, current->mm, y_dma.uaddr, y_dma.page_count, 0, 1, &dma->map[0], NULL);
+ uv_pages = get_user_pages(current, current->mm, uv_dma.uaddr, uv_dma.page_count, 0, 1, &dma->map[y_pages], NULL);
+ up_read(&current->mm->mmap_sem);
+
+ dma->page_count = y_dma.page_count + uv_dma.page_count;
+
+ if (y_pages + uv_pages != dma->page_count) {
+ IVTV_DEBUG_WARN("failed to map user pages, returned %d instead of %d\n",
+ y_pages + uv_pages, dma->page_count);
+
+ for (i = 0; i < dma->page_count; i++) {
+ put_page(dma->map[i]);
+ }
+ dma->page_count = 0;
+ return -EINVAL;
+ }
+
+ /* Fill & map SG List */
+ ivtv_udma_fill_sg_list (dma, &uv_dma, ivtv_udma_fill_sg_list (dma, &y_dma, 0));
+ dma->SG_length = pci_map_sg(itv->dev, dma->SGlist, dma->page_count, PCI_DMA_TODEVICE);
+
+ /* Fill SG Array with new values */
+ ivtv_udma_fill_sg_array (dma, y_buffer_offset, uv_buffer_offset, y_size);
+
+ /* If we've offset the y plane, ensure top area is blanked */
+ if (args->src.height + args->src.top < 512-16) {
+ if (itv->yuv_info.blanking_dmaptr) {
+ dma->SGarray[dma->SG_length].size = cpu_to_le32(720*16);
+ dma->SGarray[dma->SG_length].src = cpu_to_le32(itv->yuv_info.blanking_dmaptr);
+ dma->SGarray[dma->SG_length].dst = cpu_to_le32(IVTV_DEC_MEM_START + yuv_offset[frame]);
+ dma->SG_length++;
+ }
+ }
+
+ /* Tag SG Array with Interrupt Bit */
+ dma->SGarray[dma->SG_length - 1].size |= cpu_to_le32(0x80000000);
+
+ ivtv_udma_sync_for_device(itv);
+ return 0;
+}
+
+/* We rely on a table held in the firmware - Quick check. */
+int ivtv_yuv_filter_check(struct ivtv *itv)
+{
+ int i, offset_y, offset_uv;
+
+ for (i=0, offset_y = 16, offset_uv = 4; i<16; i++, offset_y += 24, offset_uv += 12) {
+ if ((read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + offset_y) != i << 16) ||
+ (read_dec(IVTV_YUV_VERTICAL_FILTER_OFFSET + offset_uv) != i << 16)) {
+ IVTV_WARN ("YUV filter table not found in firmware.\n");
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static void ivtv_yuv_filter(struct ivtv *itv, int h_filter, int v_filter_1, int v_filter_2)
+{
+ int filter_index, filter_line;
+
+ /* If any filter is -1, then don't update it */
+ if (h_filter > -1) {
+ if (h_filter > 4) h_filter = 4;
+ filter_index = h_filter * 384;
+ filter_line = 0;
+ while (filter_line < 16) {
+ write_reg(read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + filter_index), 0x02804);
+ write_reg(read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + filter_index), 0x0281c);
+ filter_index += 4;
+ write_reg(read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + filter_index), 0x02808);
+ write_reg(read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + filter_index), 0x02820);
+ filter_index += 4;
+ write_reg(read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + filter_index), 0x0280c);
+ write_reg(read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + filter_index), 0x02824);
+ filter_index += 4;
+ write_reg(read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + filter_index), 0x02810);
+ write_reg(read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + filter_index), 0x02828);
+ filter_index += 4;
+ write_reg(read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + filter_index), 0x02814);
+ write_reg(read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + filter_index), 0x0282c);
+ filter_index += 8;
+ write_reg(0, 0x02818);
+ write_reg(0, 0x02830);
+ filter_line ++;
+ }
+ IVTV_DEBUG_YUV("h_filter -> %d\n",h_filter);
+ }
+
+ if (v_filter_1 > -1) {
+ if (v_filter_1 > 4) v_filter_1 = 4;
+ filter_index = v_filter_1 * 192;
+ filter_line = 0;
+ while (filter_line < 16) {
+ write_reg(read_dec(IVTV_YUV_VERTICAL_FILTER_OFFSET + filter_index), 0x02900);
+ filter_index += 4;
+ write_reg(read_dec(IVTV_YUV_VERTICAL_FILTER_OFFSET + filter_index), 0x02904);
+ filter_index += 8;
+ write_reg(0, 0x02908);
+ filter_line ++;
+ }
+ IVTV_DEBUG_YUV("v_filter_1 -> %d\n",v_filter_1);
+ }
+
+ if (v_filter_2 > -1) {
+ if (v_filter_2 > 4) v_filter_2 = 4;
+ filter_index = v_filter_2 * 192;
+ filter_line = 0;
+ while (filter_line < 16) {
+ write_reg(read_dec(IVTV_YUV_VERTICAL_FILTER_OFFSET + filter_index), 0x0290c);
+ filter_index += 4;
+ write_reg(read_dec(IVTV_YUV_VERTICAL_FILTER_OFFSET + filter_index), 0x02910);
+ filter_index += 8;
+ write_reg(0, 0x02914);
+ filter_line ++;
+ }
+ IVTV_DEBUG_YUV("v_filter_2 -> %d\n",v_filter_2);
+ }
+}
+
+static void ivtv_yuv_handle_horizontal(struct ivtv *itv, struct yuv_frame_info *window)
+{
+ u32 reg_2834, reg_2838, reg_283c;
+ u32 reg_2844, reg_2854, reg_285c;
+ u32 reg_2864, reg_2874, reg_2890;
+ u32 reg_2870, reg_2870_base, reg_2870_offset;
+ int x_cutoff;
+ int h_filter;
+ u32 master_width;
+
+ IVTV_DEBUG_WARN( "Need to adjust to width %d src_w %d dst_w %d src_x %d dst_x %d\n",
+ window->tru_w, window->src_w, window->dst_w,window->src_x, window->dst_x);
+
+ /* How wide is the src image */
+ x_cutoff = window->src_w + window->src_x;
+
+ /* Set the display width */
+ reg_2834 = window->dst_w;
+ reg_2838 = reg_2834;
+
+ /* Set the display position */
+ reg_2890 = window->dst_x;
+
+ /* Index into the image horizontally */
+ reg_2870 = 0;
+
+ /* 2870 is normally fudged to align video coords with osd coords.
+ If running full screen, it causes an unwanted left shift
+ Remove the fudge if we almost fill the screen.
+ Gradually adjust the offset to avoid the video 'snapping'
+ left/right if it gets dragged through this region.
+ Only do this if osd is full width. */
+ if (window->vis_w == 720) {
+ if ((window->tru_x - window->pan_x > -1) && (window->tru_x - window->pan_x <= 40) && (window->dst_w >= 680)){
+ reg_2870 = 10 - (window->tru_x - window->pan_x) / 4;
+ }
+ else if ((window->tru_x - window->pan_x < 0) && (window->tru_x - window->pan_x >= -20) && (window->dst_w >= 660)) {
+ reg_2870 = (10 + (window->tru_x - window->pan_x) / 2);
+ }
+
+ if (window->dst_w >= window->src_w)
+ reg_2870 = reg_2870 << 16 | reg_2870;
+ else
+ reg_2870 = ((reg_2870 & ~1) << 15) | (reg_2870 & ~1);
+ }
+
+ if (window->dst_w < window->src_w)
+ reg_2870 = 0x000d000e - reg_2870;
+ else
+ reg_2870 = 0x0012000e - reg_2870;
+
+ /* We're also using 2870 to shift the image left (src_x & negative dst_x) */
+ reg_2870_offset = (window->src_x*((window->dst_w << 21)/window->src_w))>>19;
+
+ if (window->dst_w >= window->src_w) {
+ x_cutoff &= ~1;
+ master_width = (window->src_w * 0x00200000) / (window->dst_w);
+ if (master_width * window->dst_w != window->src_w * 0x00200000) master_width ++;
+ reg_2834 = (reg_2834 << 16) | x_cutoff;
+ reg_2838 = (reg_2838 << 16) | x_cutoff;
+ reg_283c = master_width >> 2;
+ reg_2844 = master_width >> 2;
+ reg_2854 = master_width;
+ reg_285c = master_width >> 1;
+ reg_2864 = master_width >> 1;
+
+ /* We also need to factor in the scaling
+ (src_w - dst_w) / (src_w / 4) */
+ if (window->dst_w > window->src_w)
+ reg_2870_base = ((window->dst_w - window->src_w)<<16) / (window->src_w <<14);
+ else
+ reg_2870_base = 0;
+
+ reg_2870 += (((reg_2870_offset << 14) & 0xFFFF0000) | reg_2870_offset >> 2) + (reg_2870_base << 17 | reg_2870_base);
+ reg_2874 = 0;
+ }
+ else if (window->dst_w < window->src_w / 2) {
+ master_width = (window->src_w * 0x00080000) / window->dst_w;
+ if (master_width * window->dst_w != window->src_w * 0x00080000) master_width ++;
+ reg_2834 = (reg_2834 << 16) | x_cutoff;
+ reg_2838 = (reg_2838 << 16) | x_cutoff;
+ reg_283c = master_width >> 2;
+ reg_2844 = master_width >> 1;
+ reg_2854 = master_width;
+ reg_285c = master_width >> 1;
+ reg_2864 = master_width >> 1;
+ reg_2870 += (((reg_2870_offset << 15) & 0xFFFF0000) | reg_2870_offset);
+ reg_2870 += (5 - (((window->src_w + window->src_w / 2) - 1) / window->dst_w)) << 16;
+ reg_2874 = 0x00000012;
+ }
+ else {
+ master_width = (window->src_w * 0x00100000) / window->dst_w;
+ if (master_width * window->dst_w != window->src_w * 0x00100000) master_width ++;
+ reg_2834 = (reg_2834 << 16) | x_cutoff;
+ reg_2838 = (reg_2838 << 16) | x_cutoff;
+ reg_283c = master_width >> 2;
+ reg_2844 = master_width >> 1;
+ reg_2854 = master_width;
+ reg_285c = master_width >> 1;
+ reg_2864 = master_width >> 1;
+ reg_2870 += (((reg_2870_offset << 14) & 0xFFFF0000) | reg_2870_offset >> 1);
+ reg_2870 += (5 - (((window->src_w * 3) - 1) / window->dst_w)) << 16;
+ reg_2874 = 0x00000001;
+ }
+
+ /* Select the horizontal filter */
+ if (window->src_w == window->dst_w) {
+ /* An exact size match uses filter 0 */
+ h_filter = 0;
+ }
+ else {
+ /* Figure out which filter to use */
+ h_filter = ((window->src_w << 16) / window->dst_w) >> 15;
+ h_filter = (h_filter >> 1) + (h_filter & 1);
+ /* Only an exact size match can use filter 0 */
+ if (h_filter == 0) h_filter = 1;
+ }
+
+ write_reg(reg_2834, 0x02834);
+ write_reg(reg_2838, 0x02838);
+ IVTV_DEBUG_YUV("Update reg 0x2834 %08x->%08x 0x2838 %08x->%08x\n",itv->yuv_info.reg_2834, reg_2834, itv->yuv_info.reg_2838, reg_2838);
+
+ write_reg(reg_283c, 0x0283c);
+ write_reg(reg_2844, 0x02844);
+
+ IVTV_DEBUG_YUV("Update reg 0x283c %08x->%08x 0x2844 %08x->%08x\n",itv->yuv_info.reg_283c, reg_283c, itv->yuv_info.reg_2844, reg_2844);
+
+ write_reg(0x00080514, 0x02840);
+ write_reg(0x00100514, 0x02848);
+ IVTV_DEBUG_YUV("Update reg 0x2840 %08x->%08x 0x2848 %08x->%08x\n",itv->yuv_info.reg_2840, 0x00080514, itv->yuv_info.reg_2848, 0x00100514);
+
+ write_reg(reg_2854, 0x02854);
+ IVTV_DEBUG_YUV("Update reg 0x2854 %08x->%08x \n",itv->yuv_info.reg_2854, reg_2854);
+
+ write_reg(reg_285c, 0x0285c);
+ write_reg(reg_2864, 0x02864);
+ IVTV_DEBUG_YUV("Update reg 0x285c %08x->%08x 0x2864 %08x->%08x\n",itv->yuv_info.reg_285c, reg_285c, itv->yuv_info.reg_2864, reg_2864);
+
+ write_reg(reg_2874, 0x02874);
+ IVTV_DEBUG_YUV("Update reg 0x2874 %08x->%08x\n",itv->yuv_info.reg_2874, reg_2874);
+
+ write_reg(reg_2870, 0x02870);
+ IVTV_DEBUG_YUV("Update reg 0x2870 %08x->%08x\n",itv->yuv_info.reg_2870, reg_2870);
+
+ write_reg( reg_2890,0x02890);
+ IVTV_DEBUG_YUV("Update reg 0x2890 %08x->%08x\n",itv->yuv_info.reg_2890, reg_2890);
+
+ /* Only update the filter if we really need to */
+ if (h_filter != itv->yuv_info.h_filter) {
+ ivtv_yuv_filter (itv,h_filter,-1,-1);
+ itv->yuv_info.h_filter = h_filter;
+ }
+}
+
+static void ivtv_yuv_handle_vertical(struct ivtv *itv, struct yuv_frame_info *window)
+{
+ u32 master_height;
+ u32 reg_2918, reg_291c, reg_2920, reg_2928;
+ u32 reg_2930, reg_2934, reg_293c;
+ u32 reg_2940, reg_2944, reg_294c;
+ u32 reg_2950, reg_2954, reg_2958, reg_295c;
+ u32 reg_2960, reg_2964, reg_2968, reg_296c;
+ u32 reg_289c;
+ u32 src_y_major_y, src_y_minor_y;
+ u32 src_y_major_uv, src_y_minor_uv;
+ u32 reg_2964_base, reg_2968_base;
+ int v_filter_1, v_filter_2;
+
+ IVTV_DEBUG_WARN("Need to adjust to height %d src_h %d dst_h %d src_y %d dst_y %d\n",
+ window->tru_h, window->src_h, window->dst_h,window->src_y, window->dst_y);
+
+ /* What scaling mode is being used... */
+ if (window->interlaced_y) {
+ IVTV_DEBUG_YUV("Scaling mode Y: Interlaced\n");
+ }
+ else {
+ IVTV_DEBUG_YUV("Scaling mode Y: Progressive\n");
+ }
+
+ if (window->interlaced_uv) {
+ IVTV_DEBUG_YUV("Scaling mode UV: Interlaced\n");
+ }
+ else {
+ IVTV_DEBUG_YUV("Scaling mode UV: Progressive\n");
+ }
+
+ /* What is the source video being treated as... */
+ if (itv->yuv_info.frame_interlaced) {
+ IVTV_DEBUG_WARN("Source video: Interlaced\n");
+ }
+ else {
+ IVTV_DEBUG_WARN("Source video: Non-interlaced\n");
+ }
+
+ /* We offset into the image using two different index methods, so split
+ the y source coord into two parts. */
+ if (window->src_y < 8) {
+ src_y_minor_uv = window->src_y;
+ src_y_major_uv = 0;
+ }
+ else {
+ src_y_minor_uv = 8;
+ src_y_major_uv = window->src_y - 8;
+ }
+
+ src_y_minor_y = src_y_minor_uv;
+ src_y_major_y = src_y_major_uv;
+
+ if (window->offset_y) src_y_minor_y += 16;
+
+ if (window->interlaced_y)
+ reg_2918 = (window->dst_h << 16) | (window->src_h + src_y_minor_y);
+ else
+ reg_2918 = (window->dst_h << 16) | ((window->src_h + src_y_minor_y) << 1);
+
+ if (window->interlaced_uv)
+ reg_291c = (window->dst_h << 16) | ((window->src_h + src_y_minor_uv) >> 1);
+ else
+ reg_291c = (window->dst_h << 16) | (window->src_h + src_y_minor_uv);
+
+ reg_2964_base = (src_y_minor_y * ((window->dst_h << 16)/window->src_h)) >> 14;
+ reg_2968_base = (src_y_minor_uv * ((window->dst_h << 16)/window->src_h)) >> 14;
+
+ if (window->dst_h / 2 >= window->src_h && !window->interlaced_y) {
+ master_height = (window->src_h * 0x00400000) / window->dst_h;
+ if ((window->src_h * 0x00400000) - (master_height * window->dst_h) >= window->dst_h / 2) master_height ++;
+ reg_2920 = master_height >> 2;
+ reg_2928 = master_height >> 3;
+ reg_2930 = master_height;
+ reg_2940 = master_height >> 1;
+ reg_2964_base >>= 3;
+ reg_2968_base >>= 3;
+ reg_296c = 0x00000000;
+ }
+ else if (window->dst_h >= window->src_h) {
+ master_height = (window->src_h * 0x00400000) / window->dst_h;
+ master_height = (master_height >> 1) + (master_height & 1);
+ reg_2920 = master_height >> 2;
+ reg_2928 = master_height >> 2;
+ reg_2930 = master_height;
+ reg_2940 = master_height >> 1;
+ reg_296c = 0x00000000;
+ if (window->interlaced_y) {
+ reg_2964_base >>= 3;
+ }
+ else {
+ reg_296c ++;
+ reg_2964_base >>= 2;
+ }
+ if (window->interlaced_uv) reg_2928 >>= 1;
+ reg_2968_base >>= 3;
+ }
+ else if (window->dst_h >= window->src_h / 2) {
+ master_height = (window->src_h * 0x00200000) / window->dst_h;
+ master_height = (master_height >> 1) + (master_height & 1);
+ reg_2920 = master_height >> 2;
+ reg_2928 = master_height >> 2;
+ reg_2930 = master_height;
+ reg_2940 = master_height;
+ reg_296c = 0x00000101;
+ if (window->interlaced_y) {
+ reg_2964_base >>= 2;
+ }
+ else {
+ reg_296c ++;
+ reg_2964_base >>= 1;
+ }
+ if (window->interlaced_uv) reg_2928 >>= 1;
+ reg_2968_base >>= 2;
+ }
+ else {
+ master_height = (window->src_h * 0x00100000) / window->dst_h;
+ master_height = (master_height >> 1) + (master_height & 1);
+ reg_2920 = master_height >> 2;
+ reg_2928 = master_height >> 2;
+ reg_2930 = master_height;
+ reg_2940 = master_height;
+ reg_2964_base >>= 1;
+ reg_2968_base >>= 2;
+ reg_296c = 0x00000102;
+ }
+
+ /* FIXME These registers change depending on scaled / unscaled output
+ We really need to work out what they should be */
+ if (window->src_h == window->dst_h){
+ reg_2934 = 0x00020000;
+ reg_293c = 0x00100000;
+ reg_2944 = 0x00040000;
+ reg_294c = 0x000b0000;
+ }
+ else {
+ reg_2934 = 0x00000FF0;
+ reg_293c = 0x00000FF0;
+ reg_2944 = 0x00000FF0;
+ reg_294c = 0x00000FF0;
+ }
+
+ /* The first line to be displayed */
+ reg_2950 = 0x00010000 + src_y_major_y;
+ if (window->interlaced_y) reg_2950 += 0x00010000;
+ reg_2954 = reg_2950 + 1;
+
+ reg_2958 = 0x00010000 + (src_y_major_y >> 1);
+ if (window->interlaced_uv) reg_2958 += 0x00010000;
+ reg_295c = reg_2958 + 1;
+
+ if (itv->yuv_info.decode_height == 480)
+ reg_289c = 0x011e0017;
+ else
+ reg_289c = 0x01500017;
+
+ if (window->dst_y < 0)
+ reg_289c = (reg_289c - ((window->dst_y & ~1)<<15))-(window->dst_y >>1);
+ else
+ reg_289c = (reg_289c + ((window->dst_y & ~1)<<15))+(window->dst_y >>1);
+
+ /* How much of the source to decode.
+ Take into account the source offset */
+ reg_2960 = ((src_y_minor_y + window->src_h + src_y_major_y) - 1 ) |
+ ((((src_y_minor_uv + window->src_h + src_y_major_uv) - 1) & ~1) << 15);
+
+ /* Calculate correct value for register 2964 */
+ if (window->src_h == window->dst_h)
+ reg_2964 = 1;
+ else {
+ reg_2964 = 2 + ((window->dst_h << 1) / window->src_h);
+ reg_2964 = (reg_2964 >> 1) + (reg_2964 & 1);
+ }
+ reg_2968 = (reg_2964 << 16) + reg_2964 + (reg_2964 >> 1);
+ reg_2964 = (reg_2964 << 16) + reg_2964 + (reg_2964 * 46 / 94);
+
+ /* Okay, we've wasted time working out the correct value,
+ but if we use it, it fouls the the window alignment.
+ Fudge it to what we want... */
+ reg_2964 = 0x00010001 + ((reg_2964 & 0x0000FFFF) - (reg_2964 >> 16));
+ reg_2968 = 0x00010001 + ((reg_2968 & 0x0000FFFF) - (reg_2968 >> 16));
+
+ /* Deviate further from what it should be. I find the flicker headache
+ inducing so try to reduce it slightly. Leave 2968 as-is otherwise
+ colours foul. */
+ if ((reg_2964 != 0x00010001) && (window->dst_h / 2 <= window->src_h))
+ reg_2964 = (reg_2964 & 0xFFFF0000) + ((reg_2964 & 0x0000FFFF)/2);
+
+ if (!window->interlaced_y) reg_2964 -= 0x00010001;
+ if (!window->interlaced_uv) reg_2968 -= 0x00010001;
+
+ reg_2964 += ((reg_2964_base << 16) | reg_2964_base);
+ reg_2968 += ((reg_2968_base << 16) | reg_2968_base);
+
+ /* Select the vertical filter */
+ if (window->src_h == window->dst_h) {
+ /* An exact size match uses filter 0/1 */
+ v_filter_1 = 0;
+ v_filter_2 = 1;
+ }
+ else {
+ /* Figure out which filter to use */
+ v_filter_1 = ((window->src_h << 16) / window->dst_h) >> 15;
+ v_filter_1 = (v_filter_1 >> 1) + (v_filter_1 & 1);
+ /* Only an exact size match can use filter 0 */
+ if (v_filter_1 == 0) v_filter_1 = 1;
+ v_filter_2 = v_filter_1;
+ }
+
+ write_reg(reg_2934, 0x02934);
+ write_reg(reg_293c, 0x0293c);
+ IVTV_DEBUG_YUV("Update reg 0x2934 %08x->%08x 0x293c %08x->%08x\n",itv->yuv_info.reg_2934, reg_2934, itv->yuv_info.reg_293c, reg_293c);
+ write_reg(reg_2944, 0x02944);
+ write_reg(reg_294c, 0x0294c);
+ IVTV_DEBUG_YUV("Update reg 0x2944 %08x->%08x 0x294c %08x->%08x\n",itv->yuv_info.reg_2944, reg_2944, itv->yuv_info.reg_294c, reg_294c);
+
+ /* Ensure 2970 is 0 (does it ever change ?) */
+/* write_reg(0,0x02970); */
+/* IVTV_DEBUG_YUV("Update reg 0x2970 %08x->%08x\n",itv->yuv_info.reg_2970, 0); */
+
+ write_reg(reg_2930, 0x02938);
+ write_reg(reg_2930, 0x02930);
+ IVTV_DEBUG_YUV("Update reg 0x2930 %08x->%08x 0x2938 %08x->%08x\n",itv->yuv_info.reg_2930, reg_2930, itv->yuv_info.reg_2938, reg_2930);
+
+ write_reg(reg_2928, 0x02928);
+ write_reg(reg_2928+0x514, 0x0292C);
+ IVTV_DEBUG_YUV("Update reg 0x2928 %08x->%08x 0x292c %08x->%08x\n",itv->yuv_info.reg_2928, reg_2928, itv->yuv_info.reg_292c, reg_2928+0x514);
+
+ write_reg(reg_2920, 0x02920);
+ write_reg(reg_2920+0x514, 0x02924);
+ IVTV_DEBUG_YUV("Update reg 0x2920 %08x->%08x 0x2924 %08x->%08x\n",itv->yuv_info.reg_2920, reg_2920, itv->yuv_info.reg_2924, 0x514+reg_2920);
+
+ write_reg (reg_2918,0x02918);
+ write_reg (reg_291c,0x0291C);
+ IVTV_DEBUG_YUV("Update reg 0x2918 %08x->%08x 0x291C %08x->%08x\n",itv->yuv_info.reg_2918,reg_2918,itv->yuv_info.reg_291c,reg_291c);
+
+ write_reg(reg_296c, 0x0296c);
+ IVTV_DEBUG_YUV("Update reg 0x296c %08x->%08x\n",itv->yuv_info.reg_296c, reg_296c);
+
+ write_reg(reg_2940, 0x02948);
+ write_reg(reg_2940, 0x02940);
+ IVTV_DEBUG_YUV("Update reg 0x2940 %08x->%08x 0x2948 %08x->%08x\n",itv->yuv_info.reg_2940, reg_2940, itv->yuv_info.reg_2948, reg_2940);
+
+ write_reg(reg_2950, 0x02950);
+ write_reg(reg_2954, 0x02954);
+ IVTV_DEBUG_YUV("Update reg 0x2950 %08x->%08x 0x2954 %08x->%08x\n",itv->yuv_info.reg_2950, reg_2950, itv->yuv_info.reg_2954, reg_2954);
+
+ write_reg(reg_2958, 0x02958);
+ write_reg(reg_295c, 0x0295C);
+ IVTV_DEBUG_YUV("Update reg 0x2958 %08x->%08x 0x295C %08x->%08x\n",itv->yuv_info.reg_2958, reg_2958, itv->yuv_info.reg_295c, reg_295c);
+
+ write_reg(reg_2960, 0x02960);
+ IVTV_DEBUG_YUV("Update reg 0x2960 %08x->%08x \n",itv->yuv_info.reg_2960, reg_2960);
+
+ write_reg(reg_2964, 0x02964);
+ write_reg(reg_2968, 0x02968);
+ IVTV_DEBUG_YUV("Update reg 0x2964 %08x->%08x 0x2968 %08x->%08x\n",itv->yuv_info.reg_2964, reg_2964, itv->yuv_info.reg_2968, reg_2968);
+
+ write_reg( reg_289c,0x0289c);
+ IVTV_DEBUG_YUV("Update reg 0x289c %08x->%08x\n",itv->yuv_info.reg_289c, reg_289c);
+
+ /* Only update filter 1 if we really need to */
+ if (v_filter_1 != itv->yuv_info.v_filter_1) {
+ ivtv_yuv_filter (itv,-1,v_filter_1,-1);
+ itv->yuv_info.v_filter_1 = v_filter_1;
+ }
+
+ /* Only update filter 2 if we really need to */
+ if (v_filter_2 != itv->yuv_info.v_filter_2) {
+ ivtv_yuv_filter (itv,-1,-1,v_filter_2);
+ itv->yuv_info.v_filter_2 = v_filter_2;
+ }
+
+ itv->yuv_info.frame_interlaced_last = itv->yuv_info.frame_interlaced;
+}
+
+/* Modify the supplied coordinate information to fit the visible osd area */
+static u32 ivtv_yuv_window_setup (struct ivtv *itv, struct yuv_frame_info *window)
+{
+ int osd_crop, lace_threshold;
+ u32 osd_scale;
+ u32 yuv_update = 0;
+
+ lace_threshold = itv->yuv_info.lace_threshold;
+ if (lace_threshold < 0)
+ lace_threshold = itv->yuv_info.decode_height - 1;
+
+ /* Work out the lace settings */
+ switch (itv->yuv_info.lace_mode) {
+ case IVTV_YUV_MODE_PROGRESSIVE: /* Progressive mode */
+ itv->yuv_info.frame_interlaced = 0;
+ if (window->tru_h < 512 || (window->tru_h > 576 && window->tru_h < 1021))
+ window->interlaced_y = 0;
+ else
+ window->interlaced_y = 1;
+
+ if (window->tru_h < 1021 && (window->dst_h >= window->src_h /2))
+ window->interlaced_uv = 0;
+ else
+ window->interlaced_uv = 1;
+ break;
+
+ case IVTV_YUV_MODE_AUTO:
+ if (window->tru_h <= lace_threshold || window->tru_h > 576 || window->tru_w > 720){
+ itv->yuv_info.frame_interlaced = 0;
+ if ((window->tru_h < 512) ||
+ (window->tru_h > 576 && window->tru_h < 1021) ||
+ (window->tru_w > 720 && window->tru_h < 1021))
+ window->interlaced_y = 0;
+ else
+ window->interlaced_y = 1;
+
+ if (window->tru_h < 1021 && (window->dst_h >= window->src_h /2))
+ window->interlaced_uv = 0;
+ else
+ window->interlaced_uv = 1;
+ }
+ else {
+ itv->yuv_info.frame_interlaced = 1;
+ window->interlaced_y = 1;
+ window->interlaced_uv = 1;
+ }
+ break;
+
+ case IVTV_YUV_MODE_INTERLACED: /* Interlace mode */
+ default:
+ itv->yuv_info.frame_interlaced = 1;
+ window->interlaced_y = 1;
+ window->interlaced_uv = 1;
+ break;
+ }
+
+ /* Sorry, but no negative coords for src */
+ if (window->src_x < 0) window->src_x = 0;
+ if (window->src_y < 0) window->src_y = 0;
+
+ /* Can only reduce width down to 1/4 original size */
+ if ((osd_crop = window->src_w - ( 4 * window->dst_w )) > 0) {
+ window->src_x += osd_crop / 2;
+ window->src_w = (window->src_w - osd_crop) & ~3;
+ window->dst_w = window->src_w / 4;
+ window->dst_w += window->dst_w & 1;
+ }
+
+ /* Can only reduce height down to 1/4 original size */
+ if (window->src_h / window->dst_h >= 2) {
+ /* Overflow may be because we're running progressive, so force mode switch */
+ window->interlaced_y = 1;
+ /* Make sure we're still within limits for interlace */
+ if ((osd_crop = window->src_h - ( 4 * window->dst_h )) > 0) {
+ /* If we reach here we'll have to force the height. */
+ window->src_y += osd_crop / 2;
+ window->src_h = (window->src_h - osd_crop) & ~3;
+ window->dst_h = window->src_h / 4;
+ window->dst_h += window->dst_h & 1;
+ }
+ }
+
+ /* If there's nothing to safe to display, we may as well stop now */
+ if ((int)window->dst_w <= 2 || (int)window->dst_h <= 2 || (int)window->src_w <= 2 || (int)window->src_h <= 2) {
+ return 0;
+ }
+
+ /* Ensure video remains inside OSD area */
+ osd_scale = (window->src_h << 16) / window->dst_h;
+
+ if ((osd_crop = window->pan_y - window->dst_y) > 0) {
+ /* Falls off the upper edge - crop */
+ window->src_y += (osd_scale * osd_crop) >> 16;
+ window->src_h -= (osd_scale * osd_crop) >> 16;
+ window->dst_h -= osd_crop;
+ window->dst_y = 0;
+ }
+ else {
+ window->dst_y -= window->pan_y;
+ }
+
+ if ((osd_crop = window->dst_h + window->dst_y - window->vis_h) > 0) {
+ /* Falls off the lower edge - crop */
+ window->dst_h -= osd_crop;
+ window->src_h -= (osd_scale * osd_crop) >> 16;
+ }
+
+ osd_scale = (window->src_w << 16) / window->dst_w;
+
+ if ((osd_crop = window->pan_x - window->dst_x) > 0) {
+ /* Fall off the left edge - crop */
+ window->src_x += (osd_scale * osd_crop) >> 16;
+ window->src_w -= (osd_scale * osd_crop) >> 16;
+ window->dst_w -= osd_crop;
+ window->dst_x = 0;
+ }
+ else {
+ window->dst_x -= window->pan_x;
+ }
+
+ if ((osd_crop = window->dst_w + window->dst_x - window->vis_w) > 0) {
+ /* Falls off the right edge - crop */
+ window->dst_w -= osd_crop;
+ window->src_w -= (osd_scale * osd_crop) >> 16;
+ }
+
+ /* The OSD can be moved. Track to it */
+ window->dst_x += itv->yuv_info.osd_x_offset;
+ window->dst_y += itv->yuv_info.osd_y_offset;
+
+ /* Width & height for both src & dst must be even.
+ Same for coordinates. */
+ window->dst_w &= ~1;
+ window->dst_x &= ~1;
+
+ window->src_w += window->src_x & 1;
+ window->src_x &= ~1;
+
+ window->src_w &= ~1;
+ window->dst_w &= ~1;
+
+ window->dst_h &= ~1;
+ window->dst_y &= ~1;
+
+ window->src_h += window->src_y & 1;
+ window->src_y &= ~1;
+
+ window->src_h &= ~1;
+ window->dst_h &= ~1;
+
+ /* Due to rounding, we may have reduced the output size to <1/4 of the source
+ Check again, but this time just resize. Don't change source coordinates */
+ if (window->dst_w < window->src_w / 4) {
+ window->src_w &= ~3;
+ window->dst_w = window->src_w / 4;
+ window->dst_w += window->dst_w & 1;
+ }
+ if (window->dst_h < window->src_h / 4) {
+ window->src_h &= ~3;
+ window->dst_h = window->src_h / 4;
+ window->dst_h += window->dst_h & 1;
+ }
+
+ /* Check again. If there's nothing to safe to display, stop now */
+ if ((int)window->dst_w <= 2 || (int)window->dst_h <= 2 || (int)window->src_w <= 2 || (int)window->src_h <= 2) {
+ return 0;
+ }
+
+ /* Both x offset & width are linked, so they have to be done together */
+ if ((itv->yuv_info.old_frame_info.dst_w != window->dst_w) ||
+ (itv->yuv_info.old_frame_info.src_w != window->src_w) ||
+ (itv->yuv_info.old_frame_info.dst_x != window->dst_x) ||
+ (itv->yuv_info.old_frame_info.src_x != window->src_x) ||
+ (itv->yuv_info.old_frame_info.pan_x != window->pan_x) ||
+ (itv->yuv_info.old_frame_info.vis_w != window->vis_w)) {
+ yuv_update |= IVTV_YUV_UPDATE_HORIZONTAL;
+ }
+
+ if ((itv->yuv_info.old_frame_info.src_h != window->src_h) ||
+ (itv->yuv_info.old_frame_info.dst_h != window->dst_h) ||
+ (itv->yuv_info.old_frame_info.dst_y != window->dst_y) ||
+ (itv->yuv_info.old_frame_info.src_y != window->src_y) ||
+ (itv->yuv_info.old_frame_info.pan_y != window->pan_y) ||
+ (itv->yuv_info.old_frame_info.vis_h != window->vis_h) ||
+ (itv->yuv_info.old_frame_info.interlaced_y != window->interlaced_y) ||
+ (itv->yuv_info.old_frame_info.interlaced_uv != window->interlaced_uv)) {
+ yuv_update |= IVTV_YUV_UPDATE_VERTICAL;
+ }
+
+ return yuv_update;
+}
+
+/* Update the scaling register to the requested value */
+void ivtv_yuv_work_handler (struct ivtv *itv)
+{
+ struct yuv_frame_info window;
+ u32 yuv_update;
+
+ int frame = itv->yuv_info.update_frame;
+
+/* IVTV_DEBUG_YUV("Update yuv registers for frame %d\n",frame); */
+ memcpy(&window, &itv->yuv_info.new_frame_info[frame], sizeof (window));
+
+ /* Update the osd pan info */
+ window.pan_x = itv->yuv_info.osd_x_pan;
+ window.pan_y = itv->yuv_info.osd_y_pan;
+ window.vis_w = itv->yuv_info.osd_vis_w;
+ window.vis_h = itv->yuv_info.osd_vis_h;
+
+ /* Calculate the display window coordinates. Exit if nothing left */
+ if (!(yuv_update = ivtv_yuv_window_setup (itv, &window)))
+ return;
+
+ /* Update horizontal settings */
+ if (yuv_update & IVTV_YUV_UPDATE_HORIZONTAL)
+ ivtv_yuv_handle_horizontal(itv, &window);
+
+ if (yuv_update & IVTV_YUV_UPDATE_VERTICAL)
+ ivtv_yuv_handle_vertical(itv, &window);
+
+ memcpy(&itv->yuv_info.old_frame_info, &window, sizeof (itv->yuv_info.old_frame_info));
+}
+
+static void ivtv_yuv_init (struct ivtv *itv)
+{
+ 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;
+
+ /* 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;
+
+ /* 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;
+ 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;
+ if (!itv->yuv_info.osd_vis_h) itv->yuv_info.osd_vis_h = itv->yuv_info.decode_height - itv->yuv_info.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);
+ }
+ else {
+ itv->yuv_info.blanking_dmaptr = 0;
+ IVTV_DEBUG_WARN ("Failed to allocate yuv blanking buffer\n");
+ }
+
+ IVTV_DEBUG_WARN("Enable video output\n");
+ write_reg_sync(0x00108080, 0x2898);
+
+ /* 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);
+}
+
+int ivtv_yuv_prep_frame(struct ivtv *itv, struct ivtv_dma_frame *args)
+{
+ DEFINE_WAIT(wait);
+ int rc = 0;
+ int got_sig = 0;
+ int frame, next_fill_frame, last_fill_frame;
+
+ IVTV_DEBUG_INFO("yuv_prep_frame\n");
+
+ if (atomic_read(&itv->yuv_info.next_dma_frame) == -1) ivtv_yuv_init(itv);
+
+ frame = atomic_read(&itv->yuv_info.next_fill_frame);
+ next_fill_frame = (frame + 1) & 0x3;
+ last_fill_frame = (atomic_read(&itv->yuv_info.next_dma_frame)+1) & 0x3;
+
+ if (next_fill_frame != last_fill_frame && last_fill_frame != frame) {
+ /* Buffers are full - Overwrite the last frame */
+ next_fill_frame = frame;
+ frame = (frame - 1) & 3;
+ }
+
+ /* Take a snapshot of the yuv coordinate information */
+ itv->yuv_info.new_frame_info[frame].src_x = args->src.left;
+ itv->yuv_info.new_frame_info[frame].src_y = args->src.top;
+ itv->yuv_info.new_frame_info[frame].src_w = args->src.width;
+ itv->yuv_info.new_frame_info[frame].src_h = args->src.height;
+ itv->yuv_info.new_frame_info[frame].dst_x = args->dst.left;
+ itv->yuv_info.new_frame_info[frame].dst_y = args->dst.top;
+ itv->yuv_info.new_frame_info[frame].dst_w = args->dst.width;
+ itv->yuv_info.new_frame_info[frame].dst_h = args->dst.height;
+ itv->yuv_info.new_frame_info[frame].tru_x = args->dst.left;
+ itv->yuv_info.new_frame_info[frame].tru_w = args->src_width;
+ itv->yuv_info.new_frame_info[frame].tru_h = args->src_height;
+
+ /* Are we going to offset the Y plane */
+ if (args->src.height + args->src.top < 512-16)
+ itv->yuv_info.new_frame_info[frame].offset_y = 1;
+ else
+ itv->yuv_info.new_frame_info[frame].offset_y = 0;
+
+ /* Snapshot the osd pan info */
+ itv->yuv_info.new_frame_info[frame].pan_x = itv->yuv_info.osd_x_pan;
+ itv->yuv_info.new_frame_info[frame].pan_y = itv->yuv_info.osd_y_pan;
+ itv->yuv_info.new_frame_info[frame].vis_w = itv->yuv_info.osd_vis_w;
+ itv->yuv_info.new_frame_info[frame].vis_h = itv->yuv_info.osd_vis_h;
+
+ itv->yuv_info.new_frame_info[frame].update = 0;
+ itv->yuv_info.new_frame_info[frame].interlaced_y = 0;
+ itv->yuv_info.new_frame_info[frame].interlaced_uv = 0;
+
+ if (memcmp (&itv->yuv_info.old_frame_info_args, &itv->yuv_info.new_frame_info[frame],
+ sizeof (itv->yuv_info.new_frame_info[frame]))) {
+ memcpy(&itv->yuv_info.old_frame_info_args, &itv->yuv_info.new_frame_info[frame], sizeof (itv->yuv_info.old_frame_info_args));
+ itv->yuv_info.new_frame_info[frame].update = 1;
+/* IVTV_DEBUG_YUV ("Requesting register update for frame %d\n",frame); */
+ }
+
+ /* DMA the frame */
+ mutex_lock(&itv->udma.lock);
+
+ if ((rc = ivtv_yuv_prep_user_dma(itv, &itv->udma, args)) != 0) {
+ mutex_unlock(&itv->udma.lock);
+ return rc;
+ }
+
+ ivtv_udma_prepare(itv);
+ prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);
+ /* if no UDMA is pending and no UDMA is in progress, then the DMA
+ is finished */
+ while (itv->i_flags & (IVTV_F_I_UDMA_PENDING | IVTV_F_I_UDMA)) {
+ /* don't interrupt if the DMA is in progress but break off
+ a still pending DMA. */
+ got_sig = signal_pending(current);
+ if (got_sig && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags))
+ break;
+ got_sig = 0;
+ schedule();
+ }
+ finish_wait(&itv->dma_waitq, &wait);
+
+ /* Unmap Last DMA Xfer */
+ ivtv_udma_unmap(itv);
+
+ if (got_sig) {
+ IVTV_DEBUG_INFO("User stopped YUV UDMA\n");
+ mutex_unlock(&itv->udma.lock);
+ return -EINTR;
+ }
+
+ atomic_set(&itv->yuv_info.next_fill_frame, next_fill_frame);
+
+ mutex_unlock(&itv->udma.lock);
+ return rc;
+}
+
+void ivtv_yuv_close(struct ivtv *itv)
+{
+ int h_filter, v_filter_1, v_filter_2;
+
+ IVTV_DEBUG_YUV("ivtv_yuv_close\n");
+ ivtv_waitq(&itv->vsync_waitq);
+
+ atomic_set(&itv->yuv_info.next_dma_frame, -1);
+ atomic_set(&itv->yuv_info.next_fill_frame, 0);
+
+ /* Reset registers we have changed so mpeg playback works */
+
+ /* If we fully restore this register, the display may remain active.
+ Restore, but set one bit to blank the video. Firmware will always
+ clear this bit when needed, so not a problem. */
+ write_reg(itv->yuv_info.reg_2898 | 0x01000000, 0x2898);
+
+ write_reg(itv->yuv_info.reg_2834, 0x02834);
+ write_reg(itv->yuv_info.reg_2838, 0x02838);
+ write_reg(itv->yuv_info.reg_283c, 0x0283c);
+ write_reg(itv->yuv_info.reg_2840, 0x02840);
+ write_reg(itv->yuv_info.reg_2844, 0x02844);
+ write_reg(itv->yuv_info.reg_2848, 0x02848);
+ write_reg(itv->yuv_info.reg_2854, 0x02854);
+ write_reg(itv->yuv_info.reg_285c, 0x0285c);
+ write_reg(itv->yuv_info.reg_2864, 0x02864);
+ write_reg(itv->yuv_info.reg_2870, 0x02870);
+ write_reg(itv->yuv_info.reg_2874, 0x02874);
+ write_reg(itv->yuv_info.reg_2890, 0x02890);
+ write_reg(itv->yuv_info.reg_289c, 0x0289c);
+
+ write_reg(itv->yuv_info.reg_2918, 0x02918);
+ write_reg(itv->yuv_info.reg_291c, 0x0291c);
+ write_reg(itv->yuv_info.reg_2920, 0x02920);
+ write_reg(itv->yuv_info.reg_2924, 0x02924);
+ write_reg(itv->yuv_info.reg_2928, 0x02928);
+ write_reg(itv->yuv_info.reg_292c, 0x0292c);
+ write_reg(itv->yuv_info.reg_2930, 0x02930);
+ write_reg(itv->yuv_info.reg_2934, 0x02934);
+ write_reg(itv->yuv_info.reg_2938, 0x02938);
+ write_reg(itv->yuv_info.reg_293c, 0x0293c);
+ write_reg(itv->yuv_info.reg_2940, 0x02940);
+ write_reg(itv->yuv_info.reg_2944, 0x02944);
+ write_reg(itv->yuv_info.reg_2948, 0x02948);
+ write_reg(itv->yuv_info.reg_294c, 0x0294c);
+ write_reg(itv->yuv_info.reg_2950, 0x02950);
+ write_reg(itv->yuv_info.reg_2954, 0x02954);
+ write_reg(itv->yuv_info.reg_2958, 0x02958);
+ write_reg(itv->yuv_info.reg_295c, 0x0295c);
+ write_reg(itv->yuv_info.reg_2960, 0x02960);
+ write_reg(itv->yuv_info.reg_2964, 0x02964);
+ write_reg(itv->yuv_info.reg_2968, 0x02968);
+ write_reg(itv->yuv_info.reg_296c, 0x0296c);
+ write_reg(itv->yuv_info.reg_2970, 0x02970);
+
+ /* Prepare to restore filters */
+
+ /* First the horizontal filter */
+ if ((itv->yuv_info.reg_2834 & 0x0000FFFF) == (itv->yuv_info.reg_2834 >> 16)) {
+ /* An exact size match uses filter 0 */
+ h_filter = 0;
+ }
+ else {
+ /* Figure out which filter to use */
+ h_filter = ((itv->yuv_info.reg_2834 << 16) / (itv->yuv_info.reg_2834 >> 16)) >> 15;
+ h_filter = (h_filter >> 1) + (h_filter & 1);
+ /* Only an exact size match can use filter 0. */
+ if (h_filter < 1) h_filter = 1;
+ }
+
+ /* Now the vertical filter */
+ if ((itv->yuv_info.reg_2918 & 0x0000FFFF) == (itv->yuv_info.reg_2918 >> 16)) {
+ /* An exact size match uses filter 0/1 */
+ v_filter_1 = 0;
+ v_filter_2 = 1;
+ }
+ else {
+ /* Figure out which filter to use */
+ v_filter_1 = ((itv->yuv_info.reg_2918 << 16) / (itv->yuv_info.reg_2918 >> 16)) >> 15;
+ v_filter_1 = (v_filter_1 >> 1) + (v_filter_1 & 1);
+ /* Only an exact size match can use filter 0 */
+ if (v_filter_1 == 0) v_filter_1 = 1;
+ v_filter_2 = v_filter_1;
+ }
+
+ /* Now restore the filters */
+ ivtv_yuv_filter (itv,h_filter,v_filter_1,v_filter_2);
+
+ /* and clear a few registers */
+ write_reg(0, 0x02814);
+ write_reg(0, 0x0282c);
+ write_reg(0, 0x02904);
+ write_reg(0, 0x02910);
+
+ /* Release the blanking buffer */
+ if (itv->yuv_info.blanking_ptr) {
+ kfree (itv->yuv_info.blanking_ptr);
+ itv->yuv_info.blanking_ptr = NULL;
+ pci_unmap_single(itv->dev, itv->yuv_info.blanking_dmaptr, 720*16, PCI_DMA_TODEVICE);
+ }
+
+ /* Invalidate the old dimension information */
+ itv->yuv_info.old_frame_info.src_w = 0;
+ itv->yuv_info.old_frame_info.src_h = 0;
+ itv->yuv_info.old_frame_info_args.src_w = 0;
+ itv->yuv_info.old_frame_info_args.src_h = 0;
+
+ /* All done. */
+ clear_bit(IVTV_F_I_DECODING_YUV, &itv->i_flags);
+}
+