1283 lines
37 KiB
C
1283 lines
37 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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yuv support
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Copyright (C) 2007 Ian Armstrong <ian@iarmst.demon.co.uk>
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*/
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#include "ivtv-driver.h"
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#include "ivtv-udma.h"
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#include "ivtv-yuv.h"
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/* YUV buffer offsets */
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const u32 yuv_offset[IVTV_YUV_BUFFERS] = {
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0x001a8600,
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0x00240400,
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0x002d8200,
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0x00370000,
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0x00029000,
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0x000C0E00,
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0x006B0400,
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0x00748200
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};
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static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
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struct ivtv_dma_frame *args)
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{
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struct ivtv_dma_page_info y_dma;
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struct ivtv_dma_page_info uv_dma;
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struct yuv_playback_info *yi = &itv->yuv_info;
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u8 frame = yi->draw_frame;
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struct yuv_frame_info *f = &yi->new_frame_info[frame];
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int y_pages, uv_pages;
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unsigned long y_buffer_offset, uv_buffer_offset;
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int y_decode_height, uv_decode_height, y_size;
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y_buffer_offset = IVTV_DECODER_OFFSET + yuv_offset[frame];
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uv_buffer_offset = y_buffer_offset + IVTV_YUV_BUFFER_UV_OFFSET;
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y_decode_height = uv_decode_height = f->src_h + f->src_y;
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if (f->offset_y)
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y_buffer_offset += 720 * 16;
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if (y_decode_height & 15)
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y_decode_height = (y_decode_height + 16) & ~15;
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if (uv_decode_height & 31)
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uv_decode_height = (uv_decode_height + 32) & ~31;
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y_size = 720 * y_decode_height;
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/* Still in USE */
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if (dma->SG_length || dma->page_count) {
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IVTV_DEBUG_WARN
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("prep_user_dma: SG_length %d page_count %d still full?\n",
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dma->SG_length, dma->page_count);
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return -EBUSY;
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}
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ivtv_udma_get_page_info (&y_dma, (unsigned long)args->y_source, 720 * y_decode_height);
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ivtv_udma_get_page_info (&uv_dma, (unsigned long)args->uv_source, 360 * uv_decode_height);
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/* Pin user pages for DMA Xfer */
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y_pages = pin_user_pages_unlocked(y_dma.uaddr,
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y_dma.page_count, &dma->map[0], FOLL_FORCE);
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uv_pages = 0; /* silence gcc. value is set and consumed only if: */
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if (y_pages == y_dma.page_count) {
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uv_pages = pin_user_pages_unlocked(uv_dma.uaddr,
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uv_dma.page_count, &dma->map[y_pages],
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FOLL_FORCE);
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}
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if (y_pages != y_dma.page_count || uv_pages != uv_dma.page_count) {
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int rc = -EFAULT;
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if (y_pages == y_dma.page_count) {
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IVTV_DEBUG_WARN
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("failed to map uv user pages, returned %d expecting %d\n",
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uv_pages, uv_dma.page_count);
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if (uv_pages >= 0) {
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unpin_user_pages(&dma->map[y_pages], uv_pages);
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rc = -EFAULT;
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} else {
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rc = uv_pages;
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}
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} else {
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IVTV_DEBUG_WARN
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("failed to map y user pages, returned %d expecting %d\n",
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y_pages, y_dma.page_count);
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}
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if (y_pages >= 0) {
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unpin_user_pages(dma->map, y_pages);
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/*
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* Inherit the -EFAULT from rc's
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* initialization, but allow it to be
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* overridden by uv_pages above if it was an
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* actual errno.
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*/
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} else {
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rc = y_pages;
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}
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return rc;
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}
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dma->page_count = y_pages + uv_pages;
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/* Fill & map SG List */
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if (ivtv_udma_fill_sg_list (dma, &uv_dma, ivtv_udma_fill_sg_list (dma, &y_dma, 0)) < 0) {
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IVTV_DEBUG_WARN("could not allocate bounce buffers for highmem userspace buffers\n");
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unpin_user_pages(dma->map, dma->page_count);
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dma->page_count = 0;
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return -ENOMEM;
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}
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dma->SG_length = dma_map_sg(&itv->pdev->dev, dma->SGlist,
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dma->page_count, DMA_TO_DEVICE);
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/* Fill SG Array with new values */
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ivtv_udma_fill_sg_array(dma, y_buffer_offset, uv_buffer_offset, y_size);
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/* If we've offset the y plane, ensure top area is blanked */
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if (f->offset_y && yi->blanking_dmaptr) {
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dma->SGarray[dma->SG_length].size = cpu_to_le32(720*16);
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dma->SGarray[dma->SG_length].src = cpu_to_le32(yi->blanking_dmaptr);
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dma->SGarray[dma->SG_length].dst = cpu_to_le32(IVTV_DECODER_OFFSET + yuv_offset[frame]);
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dma->SG_length++;
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}
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/* Tag SG Array with Interrupt Bit */
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dma->SGarray[dma->SG_length - 1].size |= cpu_to_le32(0x80000000);
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ivtv_udma_sync_for_device(itv);
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return 0;
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}
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/* We rely on a table held in the firmware - Quick check. */
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int ivtv_yuv_filter_check(struct ivtv *itv)
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{
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int i, y, uv;
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for (i = 0, y = 16, uv = 4; i < 16; i++, y += 24, uv += 12) {
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if ((read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + y) != i << 16) ||
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(read_dec(IVTV_YUV_VERTICAL_FILTER_OFFSET + uv) != i << 16)) {
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IVTV_WARN ("YUV filter table not found in firmware.\n");
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return -1;
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}
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}
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return 0;
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}
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static void ivtv_yuv_filter(struct ivtv *itv, int h_filter, int v_filter_1, int v_filter_2)
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{
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u32 i, line;
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/* If any filter is -1, then don't update it */
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if (h_filter > -1) {
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if (h_filter > 4)
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h_filter = 4;
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i = IVTV_YUV_HORIZONTAL_FILTER_OFFSET + (h_filter * 384);
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for (line = 0; line < 16; line++) {
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write_reg(read_dec(i), 0x02804);
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write_reg(read_dec(i), 0x0281c);
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i += 4;
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write_reg(read_dec(i), 0x02808);
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write_reg(read_dec(i), 0x02820);
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i += 4;
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write_reg(read_dec(i), 0x0280c);
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write_reg(read_dec(i), 0x02824);
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i += 4;
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write_reg(read_dec(i), 0x02810);
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write_reg(read_dec(i), 0x02828);
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i += 4;
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write_reg(read_dec(i), 0x02814);
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write_reg(read_dec(i), 0x0282c);
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i += 8;
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write_reg(0, 0x02818);
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write_reg(0, 0x02830);
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}
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IVTV_DEBUG_YUV("h_filter -> %d\n", h_filter);
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}
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if (v_filter_1 > -1) {
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if (v_filter_1 > 4)
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v_filter_1 = 4;
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i = IVTV_YUV_VERTICAL_FILTER_OFFSET + (v_filter_1 * 192);
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for (line = 0; line < 16; line++) {
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write_reg(read_dec(i), 0x02900);
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i += 4;
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write_reg(read_dec(i), 0x02904);
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i += 8;
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write_reg(0, 0x02908);
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}
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IVTV_DEBUG_YUV("v_filter_1 -> %d\n", v_filter_1);
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}
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if (v_filter_2 > -1) {
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if (v_filter_2 > 4)
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v_filter_2 = 4;
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i = IVTV_YUV_VERTICAL_FILTER_OFFSET + (v_filter_2 * 192);
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for (line = 0; line < 16; line++) {
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write_reg(read_dec(i), 0x0290c);
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i += 4;
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write_reg(read_dec(i), 0x02910);
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i += 8;
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write_reg(0, 0x02914);
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}
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IVTV_DEBUG_YUV("v_filter_2 -> %d\n", v_filter_2);
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}
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}
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static void ivtv_yuv_handle_horizontal(struct ivtv *itv, struct yuv_frame_info *f)
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{
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struct yuv_playback_info *yi = &itv->yuv_info;
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u32 reg_2834, reg_2838, reg_283c;
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u32 reg_2844, reg_2854, reg_285c;
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u32 reg_2864, reg_2874, reg_2890;
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u32 reg_2870, reg_2870_base, reg_2870_offset;
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int x_cutoff;
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int h_filter;
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u32 master_width;
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IVTV_DEBUG_WARN
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("Adjust to width %d src_w %d dst_w %d src_x %d dst_x %d\n",
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f->tru_w, f->src_w, f->dst_w, f->src_x, f->dst_x);
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/* How wide is the src image */
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x_cutoff = f->src_w + f->src_x;
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/* Set the display width */
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reg_2834 = f->dst_w;
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reg_2838 = reg_2834;
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/* Set the display position */
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reg_2890 = f->dst_x;
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/* Index into the image horizontally */
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reg_2870 = 0;
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/* 2870 is normally fudged to align video coords with osd coords.
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If running full screen, it causes an unwanted left shift
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Remove the fudge if we almost fill the screen.
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Gradually adjust the offset to avoid the video 'snapping'
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left/right if it gets dragged through this region.
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Only do this if osd is full width. */
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if (f->vis_w == 720) {
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if ((f->tru_x - f->pan_x > -1) && (f->tru_x - f->pan_x <= 40) && (f->dst_w >= 680))
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reg_2870 = 10 - (f->tru_x - f->pan_x) / 4;
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else if ((f->tru_x - f->pan_x < 0) && (f->tru_x - f->pan_x >= -20) && (f->dst_w >= 660))
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reg_2870 = (10 + (f->tru_x - f->pan_x) / 2);
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if (f->dst_w >= f->src_w)
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reg_2870 = reg_2870 << 16 | reg_2870;
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else
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reg_2870 = ((reg_2870 & ~1) << 15) | (reg_2870 & ~1);
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}
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if (f->dst_w < f->src_w)
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reg_2870 = 0x000d000e - reg_2870;
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else
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reg_2870 = 0x0012000e - reg_2870;
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/* We're also using 2870 to shift the image left (src_x & negative dst_x) */
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reg_2870_offset = (f->src_x * ((f->dst_w << 21) / f->src_w)) >> 19;
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if (f->dst_w >= f->src_w) {
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x_cutoff &= ~1;
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master_width = (f->src_w * 0x00200000) / (f->dst_w);
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if (master_width * f->dst_w != f->src_w * 0x00200000)
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master_width++;
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reg_2834 = (reg_2834 << 16) | x_cutoff;
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reg_2838 = (reg_2838 << 16) | x_cutoff;
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reg_283c = master_width >> 2;
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reg_2844 = master_width >> 2;
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reg_2854 = master_width;
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reg_285c = master_width >> 1;
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reg_2864 = master_width >> 1;
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/* We also need to factor in the scaling
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(src_w - dst_w) / (src_w / 4) */
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if (f->dst_w > f->src_w)
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reg_2870_base = ((f->dst_w - f->src_w)<<16) / (f->src_w <<14);
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else
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reg_2870_base = 0;
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reg_2870 += (((reg_2870_offset << 14) & 0xFFFF0000) | reg_2870_offset >> 2) + (reg_2870_base << 17 | reg_2870_base);
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reg_2874 = 0;
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} else if (f->dst_w < f->src_w / 2) {
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master_width = (f->src_w * 0x00080000) / f->dst_w;
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if (master_width * f->dst_w != f->src_w * 0x00080000)
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master_width++;
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reg_2834 = (reg_2834 << 16) | x_cutoff;
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reg_2838 = (reg_2838 << 16) | x_cutoff;
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reg_283c = master_width >> 2;
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reg_2844 = master_width >> 1;
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reg_2854 = master_width;
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reg_285c = master_width >> 1;
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reg_2864 = master_width >> 1;
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reg_2870 += ((reg_2870_offset << 15) & 0xFFFF0000) | reg_2870_offset;
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reg_2870 += (5 - (((f->src_w + f->src_w / 2) - 1) / f->dst_w)) << 16;
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reg_2874 = 0x00000012;
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} else {
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master_width = (f->src_w * 0x00100000) / f->dst_w;
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if (master_width * f->dst_w != f->src_w * 0x00100000)
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master_width++;
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reg_2834 = (reg_2834 << 16) | x_cutoff;
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reg_2838 = (reg_2838 << 16) | x_cutoff;
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reg_283c = master_width >> 2;
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reg_2844 = master_width >> 1;
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reg_2854 = master_width;
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reg_285c = master_width >> 1;
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reg_2864 = master_width >> 1;
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reg_2870 += ((reg_2870_offset << 14) & 0xFFFF0000) | reg_2870_offset >> 1;
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reg_2870 += (5 - (((f->src_w * 3) - 1) / f->dst_w)) << 16;
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reg_2874 = 0x00000001;
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}
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/* Select the horizontal filter */
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if (f->src_w == f->dst_w) {
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/* An exact size match uses filter 0 */
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h_filter = 0;
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} else {
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/* Figure out which filter to use */
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h_filter = ((f->src_w << 16) / f->dst_w) >> 15;
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h_filter = (h_filter >> 1) + (h_filter & 1);
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/* Only an exact size match can use filter 0 */
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h_filter += !h_filter;
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}
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write_reg(reg_2834, 0x02834);
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write_reg(reg_2838, 0x02838);
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IVTV_DEBUG_YUV("Update reg 0x2834 %08x->%08x 0x2838 %08x->%08x\n",
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yi->reg_2834, reg_2834, yi->reg_2838, reg_2838);
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write_reg(reg_283c, 0x0283c);
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write_reg(reg_2844, 0x02844);
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IVTV_DEBUG_YUV("Update reg 0x283c %08x->%08x 0x2844 %08x->%08x\n",
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yi->reg_283c, reg_283c, yi->reg_2844, reg_2844);
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write_reg(0x00080514, 0x02840);
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write_reg(0x00100514, 0x02848);
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IVTV_DEBUG_YUV("Update reg 0x2840 %08x->%08x 0x2848 %08x->%08x\n",
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yi->reg_2840, 0x00080514, yi->reg_2848, 0x00100514);
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write_reg(reg_2854, 0x02854);
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IVTV_DEBUG_YUV("Update reg 0x2854 %08x->%08x \n",
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yi->reg_2854, reg_2854);
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write_reg(reg_285c, 0x0285c);
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write_reg(reg_2864, 0x02864);
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IVTV_DEBUG_YUV("Update reg 0x285c %08x->%08x 0x2864 %08x->%08x\n",
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yi->reg_285c, reg_285c, yi->reg_2864, reg_2864);
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write_reg(reg_2874, 0x02874);
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IVTV_DEBUG_YUV("Update reg 0x2874 %08x->%08x\n",
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yi->reg_2874, reg_2874);
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write_reg(reg_2870, 0x02870);
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IVTV_DEBUG_YUV("Update reg 0x2870 %08x->%08x\n",
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yi->reg_2870, reg_2870);
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write_reg(reg_2890, 0x02890);
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IVTV_DEBUG_YUV("Update reg 0x2890 %08x->%08x\n",
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yi->reg_2890, reg_2890);
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/* Only update the filter if we really need to */
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if (h_filter != yi->h_filter) {
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ivtv_yuv_filter(itv, h_filter, -1, -1);
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yi->h_filter = h_filter;
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}
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}
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static void ivtv_yuv_handle_vertical(struct ivtv *itv, struct yuv_frame_info *f)
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{
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struct yuv_playback_info *yi = &itv->yuv_info;
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u32 master_height;
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u32 reg_2918, reg_291c, reg_2920, reg_2928;
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u32 reg_2930, reg_2934, reg_293c;
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u32 reg_2940, reg_2944, reg_294c;
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u32 reg_2950, reg_2954, reg_2958, reg_295c;
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u32 reg_2960, reg_2964, reg_2968, reg_296c;
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u32 reg_289c;
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u32 src_major_y, src_minor_y;
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u32 src_major_uv, src_minor_uv;
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u32 reg_2964_base, reg_2968_base;
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int v_filter_1, v_filter_2;
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IVTV_DEBUG_WARN
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("Adjust to height %d src_h %d dst_h %d src_y %d dst_y %d\n",
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f->tru_h, f->src_h, f->dst_h, f->src_y, f->dst_y);
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/* What scaling mode is being used... */
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IVTV_DEBUG_YUV("Scaling mode Y: %s\n",
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f->interlaced_y ? "Interlaced" : "Progressive");
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IVTV_DEBUG_YUV("Scaling mode UV: %s\n",
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f->interlaced_uv ? "Interlaced" : "Progressive");
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/* What is the source video being treated as... */
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IVTV_DEBUG_WARN("Source video: %s\n",
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f->interlaced ? "Interlaced" : "Progressive");
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/* We offset into the image using two different index methods, so split
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the y source coord into two parts. */
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if (f->src_y < 8) {
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src_minor_uv = f->src_y;
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src_major_uv = 0;
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} else {
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src_minor_uv = 8;
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src_major_uv = f->src_y - 8;
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}
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src_minor_y = src_minor_uv;
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src_major_y = src_major_uv;
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if (f->offset_y)
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src_minor_y += 16;
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if (f->interlaced_y)
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reg_2918 = (f->dst_h << 16) | (f->src_h + src_minor_y);
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else
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reg_2918 = (f->dst_h << 16) | ((f->src_h + src_minor_y) << 1);
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|
|
if (f->interlaced_uv)
|
|
reg_291c = (f->dst_h << 16) | ((f->src_h + src_minor_uv) >> 1);
|
|
else
|
|
reg_291c = (f->dst_h << 16) | (f->src_h + src_minor_uv);
|
|
|
|
reg_2964_base = (src_minor_y * ((f->dst_h << 16) / f->src_h)) >> 14;
|
|
reg_2968_base = (src_minor_uv * ((f->dst_h << 16) / f->src_h)) >> 14;
|
|
|
|
if (f->dst_h / 2 >= f->src_h && !f->interlaced_y) {
|
|
master_height = (f->src_h * 0x00400000) / f->dst_h;
|
|
if ((f->src_h * 0x00400000) - (master_height * f->dst_h) >= f->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 (f->dst_h >= f->src_h) {
|
|
master_height = (f->src_h * 0x00400000) / f->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 (f->interlaced_y) {
|
|
reg_2964_base >>= 3;
|
|
} else {
|
|
reg_296c++;
|
|
reg_2964_base >>= 2;
|
|
}
|
|
if (f->interlaced_uv)
|
|
reg_2928 >>= 1;
|
|
reg_2968_base >>= 3;
|
|
} else if (f->dst_h >= f->src_h / 2) {
|
|
master_height = (f->src_h * 0x00200000) / f->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 (f->interlaced_y) {
|
|
reg_2964_base >>= 2;
|
|
} else {
|
|
reg_296c++;
|
|
reg_2964_base >>= 1;
|
|
}
|
|
if (f->interlaced_uv)
|
|
reg_2928 >>= 1;
|
|
reg_2968_base >>= 2;
|
|
} else {
|
|
master_height = (f->src_h * 0x00100000) / f->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 (f->src_h == f->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_major_y;
|
|
if (f->interlaced_y)
|
|
reg_2950 += 0x00010000;
|
|
reg_2954 = reg_2950 + 1;
|
|
|
|
reg_2958 = 0x00010000 + (src_major_y >> 1);
|
|
if (f->interlaced_uv)
|
|
reg_2958 += 0x00010000;
|
|
reg_295c = reg_2958 + 1;
|
|
|
|
if (yi->decode_height == 480)
|
|
reg_289c = 0x011e0017;
|
|
else
|
|
reg_289c = 0x01500017;
|
|
|
|
if (f->dst_y < 0)
|
|
reg_289c = (reg_289c - ((f->dst_y & ~1)<<15))-(f->dst_y >>1);
|
|
else
|
|
reg_289c = (reg_289c + ((f->dst_y & ~1)<<15))+(f->dst_y >>1);
|
|
|
|
/* How much of the source to decode.
|
|
Take into account the source offset */
|
|
reg_2960 = ((src_minor_y + f->src_h + src_major_y) - 1) |
|
|
(((src_minor_uv + f->src_h + src_major_uv - 1) & ~1) << 15);
|
|
|
|
/* Calculate correct value for register 2964 */
|
|
if (f->src_h == f->dst_h) {
|
|
reg_2964 = 1;
|
|
} else {
|
|
reg_2964 = 2 + ((f->dst_h << 1) / f->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 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) && (f->dst_h / 2 <= f->src_h))
|
|
reg_2964 = (reg_2964 & 0xFFFF0000) + ((reg_2964 & 0x0000FFFF) / 2);
|
|
|
|
if (!f->interlaced_y)
|
|
reg_2964 -= 0x00010001;
|
|
if (!f->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 (f->src_h == f->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 = ((f->src_h << 16) / f->dst_h) >> 15;
|
|
v_filter_1 = (v_filter_1 >> 1) + (v_filter_1 & 1);
|
|
/* Only an exact size match can use filter 0 */
|
|
v_filter_1 += !v_filter_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",
|
|
yi->reg_2934, reg_2934, yi->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",
|
|
yi->reg_2944, reg_2944, yi->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", yi->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",
|
|
yi->reg_2930, reg_2930, yi->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",
|
|
yi->reg_2928, reg_2928, yi->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",
|
|
yi->reg_2920, reg_2920, yi->reg_2924, reg_2920 + 0x514);
|
|
|
|
write_reg(reg_2918, 0x02918);
|
|
write_reg(reg_291c, 0x0291C);
|
|
IVTV_DEBUG_YUV("Update reg 0x2918 %08x->%08x 0x291C %08x->%08x\n",
|
|
yi->reg_2918, reg_2918, yi->reg_291c, reg_291c);
|
|
|
|
write_reg(reg_296c, 0x0296c);
|
|
IVTV_DEBUG_YUV("Update reg 0x296c %08x->%08x\n",
|
|
yi->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",
|
|
yi->reg_2940, reg_2940, yi->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",
|
|
yi->reg_2950, reg_2950, yi->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",
|
|
yi->reg_2958, reg_2958, yi->reg_295c, reg_295c);
|
|
|
|
write_reg(reg_2960, 0x02960);
|
|
IVTV_DEBUG_YUV("Update reg 0x2960 %08x->%08x \n",
|
|
yi->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",
|
|
yi->reg_2964, reg_2964, yi->reg_2968, reg_2968);
|
|
|
|
write_reg(reg_289c, 0x0289c);
|
|
IVTV_DEBUG_YUV("Update reg 0x289c %08x->%08x\n",
|
|
yi->reg_289c, reg_289c);
|
|
|
|
/* Only update filter 1 if we really need to */
|
|
if (v_filter_1 != yi->v_filter_1) {
|
|
ivtv_yuv_filter(itv, -1, v_filter_1, -1);
|
|
yi->v_filter_1 = v_filter_1;
|
|
}
|
|
|
|
/* Only update filter 2 if we really need to */
|
|
if (v_filter_2 != yi->v_filter_2) {
|
|
ivtv_yuv_filter(itv, -1, -1, v_filter_2);
|
|
yi->v_filter_2 = v_filter_2;
|
|
}
|
|
}
|
|
|
|
/* Modify the supplied coordinate information to fit the visible osd area */
|
|
static u32 ivtv_yuv_window_setup(struct ivtv *itv, struct yuv_frame_info *f)
|
|
{
|
|
struct yuv_frame_info *of = &itv->yuv_info.old_frame_info;
|
|
int osd_crop;
|
|
u32 osd_scale;
|
|
u32 yuv_update = 0;
|
|
|
|
/* Sorry, but no negative coords for src */
|
|
if (f->src_x < 0)
|
|
f->src_x = 0;
|
|
if (f->src_y < 0)
|
|
f->src_y = 0;
|
|
|
|
/* Can only reduce width down to 1/4 original size */
|
|
if ((osd_crop = f->src_w - 4 * f->dst_w) > 0) {
|
|
f->src_x += osd_crop / 2;
|
|
f->src_w = (f->src_w - osd_crop) & ~3;
|
|
f->dst_w = f->src_w / 4;
|
|
f->dst_w += f->dst_w & 1;
|
|
}
|
|
|
|
/* Can only reduce height down to 1/4 original size */
|
|
if (f->src_h / f->dst_h >= 2) {
|
|
/* Overflow may be because we're running progressive,
|
|
so force mode switch */
|
|
f->interlaced_y = 1;
|
|
/* Make sure we're still within limits for interlace */
|
|
if ((osd_crop = f->src_h - 4 * f->dst_h) > 0) {
|
|
/* If we reach here we'll have to force the height. */
|
|
f->src_y += osd_crop / 2;
|
|
f->src_h = (f->src_h - osd_crop) & ~3;
|
|
f->dst_h = f->src_h / 4;
|
|
f->dst_h += f->dst_h & 1;
|
|
}
|
|
}
|
|
|
|
/* If there's nothing to safe to display, we may as well stop now */
|
|
if ((int)f->dst_w <= 2 || (int)f->dst_h <= 2 ||
|
|
(int)f->src_w <= 2 || (int)f->src_h <= 2) {
|
|
return IVTV_YUV_UPDATE_INVALID;
|
|
}
|
|
|
|
/* Ensure video remains inside OSD area */
|
|
osd_scale = (f->src_h << 16) / f->dst_h;
|
|
|
|
if ((osd_crop = f->pan_y - f->dst_y) > 0) {
|
|
/* Falls off the upper edge - crop */
|
|
f->src_y += (osd_scale * osd_crop) >> 16;
|
|
f->src_h -= (osd_scale * osd_crop) >> 16;
|
|
f->dst_h -= osd_crop;
|
|
f->dst_y = 0;
|
|
} else {
|
|
f->dst_y -= f->pan_y;
|
|
}
|
|
|
|
if ((osd_crop = f->dst_h + f->dst_y - f->vis_h) > 0) {
|
|
/* Falls off the lower edge - crop */
|
|
f->dst_h -= osd_crop;
|
|
f->src_h -= (osd_scale * osd_crop) >> 16;
|
|
}
|
|
|
|
osd_scale = (f->src_w << 16) / f->dst_w;
|
|
|
|
if ((osd_crop = f->pan_x - f->dst_x) > 0) {
|
|
/* Fall off the left edge - crop */
|
|
f->src_x += (osd_scale * osd_crop) >> 16;
|
|
f->src_w -= (osd_scale * osd_crop) >> 16;
|
|
f->dst_w -= osd_crop;
|
|
f->dst_x = 0;
|
|
} else {
|
|
f->dst_x -= f->pan_x;
|
|
}
|
|
|
|
if ((osd_crop = f->dst_w + f->dst_x - f->vis_w) > 0) {
|
|
/* Falls off the right edge - crop */
|
|
f->dst_w -= osd_crop;
|
|
f->src_w -= (osd_scale * osd_crop) >> 16;
|
|
}
|
|
|
|
if (itv->yuv_info.track_osd) {
|
|
/* The OSD can be moved. Track to it */
|
|
f->dst_x += itv->yuv_info.osd_x_offset;
|
|
f->dst_y += itv->yuv_info.osd_y_offset;
|
|
}
|
|
|
|
/* Width & height for both src & dst must be even.
|
|
Same for coordinates. */
|
|
f->dst_w &= ~1;
|
|
f->dst_x &= ~1;
|
|
|
|
f->src_w += f->src_x & 1;
|
|
f->src_x &= ~1;
|
|
|
|
f->src_w &= ~1;
|
|
f->dst_w &= ~1;
|
|
|
|
f->dst_h &= ~1;
|
|
f->dst_y &= ~1;
|
|
|
|
f->src_h += f->src_y & 1;
|
|
f->src_y &= ~1;
|
|
|
|
f->src_h &= ~1;
|
|
f->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 (f->dst_w < f->src_w / 4) {
|
|
f->src_w &= ~3;
|
|
f->dst_w = f->src_w / 4;
|
|
f->dst_w += f->dst_w & 1;
|
|
}
|
|
if (f->dst_h < f->src_h / 4) {
|
|
f->src_h &= ~3;
|
|
f->dst_h = f->src_h / 4;
|
|
f->dst_h += f->dst_h & 1;
|
|
}
|
|
|
|
/* Check again. If there's nothing to safe to display, stop now */
|
|
if ((int)f->dst_w <= 2 || (int)f->dst_h <= 2 ||
|
|
(int)f->src_w <= 2 || (int)f->src_h <= 2) {
|
|
return IVTV_YUV_UPDATE_INVALID;
|
|
}
|
|
|
|
/* Both x offset & width are linked, so they have to be done together */
|
|
if ((of->dst_w != f->dst_w) || (of->src_w != f->src_w) ||
|
|
(of->dst_x != f->dst_x) || (of->src_x != f->src_x) ||
|
|
(of->pan_x != f->pan_x) || (of->vis_w != f->vis_w)) {
|
|
yuv_update |= IVTV_YUV_UPDATE_HORIZONTAL;
|
|
}
|
|
|
|
if ((of->src_h != f->src_h) || (of->dst_h != f->dst_h) ||
|
|
(of->dst_y != f->dst_y) || (of->src_y != f->src_y) ||
|
|
(of->pan_y != f->pan_y) || (of->vis_h != f->vis_h) ||
|
|
(of->lace_mode != f->lace_mode) ||
|
|
(of->interlaced_y != f->interlaced_y) ||
|
|
(of->interlaced_uv != f->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_playback_info *yi = &itv->yuv_info;
|
|
struct yuv_frame_info f;
|
|
int frame = yi->update_frame;
|
|
u32 yuv_update;
|
|
|
|
IVTV_DEBUG_YUV("Update yuv registers for frame %d\n", frame);
|
|
f = yi->new_frame_info[frame];
|
|
|
|
if (yi->track_osd) {
|
|
/* Snapshot the osd pan info */
|
|
f.pan_x = yi->osd_x_pan;
|
|
f.pan_y = yi->osd_y_pan;
|
|
f.vis_w = yi->osd_vis_w;
|
|
f.vis_h = yi->osd_vis_h;
|
|
} else {
|
|
/* Not tracking the osd, so assume full screen */
|
|
f.pan_x = 0;
|
|
f.pan_y = 0;
|
|
f.vis_w = 720;
|
|
f.vis_h = yi->decode_height;
|
|
}
|
|
|
|
/* Calculate the display window coordinates. Exit if nothing left */
|
|
if (!(yuv_update = ivtv_yuv_window_setup(itv, &f)))
|
|
return;
|
|
|
|
if (yuv_update & IVTV_YUV_UPDATE_INVALID) {
|
|
write_reg(0x01008080, 0x2898);
|
|
} else if (yuv_update) {
|
|
write_reg(0x00108080, 0x2898);
|
|
|
|
if (yuv_update & IVTV_YUV_UPDATE_HORIZONTAL)
|
|
ivtv_yuv_handle_horizontal(itv, &f);
|
|
|
|
if (yuv_update & IVTV_YUV_UPDATE_VERTICAL)
|
|
ivtv_yuv_handle_vertical(itv, &f);
|
|
}
|
|
yi->old_frame_info = f;
|
|
}
|
|
|
|
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 */
|
|
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 */
|
|
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)
|
|
yi->decode_height = 576;
|
|
else
|
|
yi->decode_height = 480;
|
|
|
|
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 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 (yi->osd_vis_h + yi->osd_y_offset > yi->decode_height) {
|
|
/* If output video standard has changed, requested height may
|
|
not be legal */
|
|
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 */
|
|
yi->blanking_ptr = kzalloc(720 * 16, GFP_ATOMIC|__GFP_NOWARN);
|
|
if (yi->blanking_ptr) {
|
|
yi->blanking_dmaptr = dma_map_single(&itv->pdev->dev,
|
|
yi->blanking_ptr,
|
|
720 * 16, DMA_TO_DEVICE);
|
|
} else {
|
|
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(&yi->next_dma_frame, 0);
|
|
}
|
|
|
|
/* Get next available yuv buffer on PVR350 */
|
|
static void ivtv_yuv_next_free(struct ivtv *itv)
|
|
{
|
|
int draw, display;
|
|
struct yuv_playback_info *yi = &itv->yuv_info;
|
|
|
|
if (atomic_read(&yi->next_dma_frame) == -1)
|
|
ivtv_yuv_init(itv);
|
|
|
|
draw = atomic_read(&yi->next_fill_frame);
|
|
display = atomic_read(&yi->next_dma_frame);
|
|
|
|
if (display > draw)
|
|
display -= IVTV_YUV_BUFFERS;
|
|
|
|
if (draw - display >= yi->max_frames_buffered)
|
|
draw = (u8)(draw - 1) % IVTV_YUV_BUFFERS;
|
|
else
|
|
yi->new_frame_info[draw].update = 0;
|
|
|
|
yi->draw_frame = draw;
|
|
}
|
|
|
|
/* Set up frame according to ivtv_dma_frame parameters */
|
|
static void ivtv_yuv_setup_frame(struct ivtv *itv, struct ivtv_dma_frame *args)
|
|
{
|
|
struct yuv_playback_info *yi = &itv->yuv_info;
|
|
u8 frame = yi->draw_frame;
|
|
u8 last_frame = (u8)(frame - 1) % IVTV_YUV_BUFFERS;
|
|
struct yuv_frame_info *nf = &yi->new_frame_info[frame];
|
|
struct yuv_frame_info *of = &yi->new_frame_info[last_frame];
|
|
int lace_threshold = yi->lace_threshold;
|
|
|
|
/* Preserve old update flag in case we're overwriting a queued frame */
|
|
int update = nf->update;
|
|
|
|
/* Take a snapshot of the yuv coordinate information */
|
|
nf->src_x = args->src.left;
|
|
nf->src_y = args->src.top;
|
|
nf->src_w = args->src.width;
|
|
nf->src_h = args->src.height;
|
|
nf->dst_x = args->dst.left;
|
|
nf->dst_y = args->dst.top;
|
|
nf->dst_w = args->dst.width;
|
|
nf->dst_h = args->dst.height;
|
|
nf->tru_x = args->dst.left;
|
|
nf->tru_w = args->src_width;
|
|
nf->tru_h = args->src_height;
|
|
|
|
/* Are we going to offset the Y plane */
|
|
nf->offset_y = (nf->tru_h + nf->src_x < 512 - 16) ? 1 : 0;
|
|
|
|
nf->update = 0;
|
|
nf->interlaced_y = 0;
|
|
nf->interlaced_uv = 0;
|
|
nf->delay = 0;
|
|
nf->sync_field = 0;
|
|
nf->lace_mode = yi->lace_mode & IVTV_YUV_MODE_MASK;
|
|
|
|
if (lace_threshold < 0)
|
|
lace_threshold = yi->decode_height - 1;
|
|
|
|
/* Work out the lace settings */
|
|
switch (nf->lace_mode) {
|
|
case IVTV_YUV_MODE_PROGRESSIVE: /* Progressive mode */
|
|
nf->interlaced = 0;
|
|
if (nf->tru_h < 512 || (nf->tru_h > 576 && nf->tru_h < 1021))
|
|
nf->interlaced_y = 0;
|
|
else
|
|
nf->interlaced_y = 1;
|
|
|
|
if (nf->tru_h < 1021 && (nf->dst_h >= nf->src_h / 2))
|
|
nf->interlaced_uv = 0;
|
|
else
|
|
nf->interlaced_uv = 1;
|
|
break;
|
|
|
|
case IVTV_YUV_MODE_AUTO:
|
|
if (nf->tru_h <= lace_threshold || nf->tru_h > 576 || nf->tru_w > 720) {
|
|
nf->interlaced = 0;
|
|
if ((nf->tru_h < 512) ||
|
|
(nf->tru_h > 576 && nf->tru_h < 1021) ||
|
|
(nf->tru_w > 720 && nf->tru_h < 1021))
|
|
nf->interlaced_y = 0;
|
|
else
|
|
nf->interlaced_y = 1;
|
|
if (nf->tru_h < 1021 && (nf->dst_h >= nf->src_h / 2))
|
|
nf->interlaced_uv = 0;
|
|
else
|
|
nf->interlaced_uv = 1;
|
|
} else {
|
|
nf->interlaced = 1;
|
|
nf->interlaced_y = 1;
|
|
nf->interlaced_uv = 1;
|
|
}
|
|
break;
|
|
|
|
case IVTV_YUV_MODE_INTERLACED: /* Interlace mode */
|
|
default:
|
|
nf->interlaced = 1;
|
|
nf->interlaced_y = 1;
|
|
nf->interlaced_uv = 1;
|
|
break;
|
|
}
|
|
|
|
if (memcmp(&yi->old_frame_info_args, nf, sizeof(*nf))) {
|
|
yi->old_frame_info_args = *nf;
|
|
nf->update = 1;
|
|
IVTV_DEBUG_YUV("Requesting reg update for frame %d\n", frame);
|
|
}
|
|
|
|
nf->update |= update;
|
|
nf->sync_field = yi->lace_sync_field;
|
|
nf->delay = nf->sync_field != of->sync_field;
|
|
}
|
|
|
|
/* Frame is complete & ready for display */
|
|
void ivtv_yuv_frame_complete(struct ivtv *itv)
|
|
{
|
|
atomic_set(&itv->yuv_info.next_fill_frame,
|
|
(itv->yuv_info.draw_frame + 1) % IVTV_YUV_BUFFERS);
|
|
}
|
|
|
|
static int ivtv_yuv_udma_frame(struct ivtv *itv, struct ivtv_dma_frame *args)
|
|
{
|
|
DEFINE_WAIT(wait);
|
|
int rc = 0;
|
|
int got_sig = 0;
|
|
/* 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 (test_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags) ||
|
|
test_bit(IVTV_F_I_UDMA, &itv->i_flags)) {
|
|
/* 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;
|
|
}
|
|
|
|
ivtv_yuv_frame_complete(itv);
|
|
|
|
mutex_unlock(&itv->udma.lock);
|
|
return rc;
|
|
}
|
|
|
|
/* Setup frame according to V4L2 parameters */
|
|
void ivtv_yuv_setup_stream_frame(struct ivtv *itv)
|
|
{
|
|
struct yuv_playback_info *yi = &itv->yuv_info;
|
|
struct ivtv_dma_frame dma_args;
|
|
|
|
ivtv_yuv_next_free(itv);
|
|
|
|
/* Copy V4L2 parameters to an ivtv_dma_frame struct... */
|
|
dma_args.y_source = NULL;
|
|
dma_args.uv_source = NULL;
|
|
dma_args.src.left = 0;
|
|
dma_args.src.top = 0;
|
|
dma_args.src.width = yi->v4l2_src_w;
|
|
dma_args.src.height = yi->v4l2_src_h;
|
|
dma_args.dst = yi->main_rect;
|
|
dma_args.src_width = yi->v4l2_src_w;
|
|
dma_args.src_height = yi->v4l2_src_h;
|
|
|
|
/* ... and use the same setup routine as ivtv_yuv_prep_frame */
|
|
ivtv_yuv_setup_frame(itv, &dma_args);
|
|
|
|
if (!itv->dma_data_req_offset)
|
|
itv->dma_data_req_offset = yuv_offset[yi->draw_frame];
|
|
}
|
|
|
|
/* Attempt to dma a frame from a user buffer */
|
|
int ivtv_yuv_udma_stream_frame(struct ivtv *itv, void __user *src)
|
|
{
|
|
struct yuv_playback_info *yi = &itv->yuv_info;
|
|
struct ivtv_dma_frame dma_args;
|
|
int res;
|
|
|
|
ivtv_yuv_setup_stream_frame(itv);
|
|
|
|
/* We only need to supply source addresses for this */
|
|
dma_args.y_source = src;
|
|
dma_args.uv_source = src + 720 * ((yi->v4l2_src_h + 31) & ~31);
|
|
/* Wait for frame DMA. Note that serialize_lock is locked,
|
|
so to allow other processes to access the driver while
|
|
we are waiting unlock first and later lock again. */
|
|
mutex_unlock(&itv->serialize_lock);
|
|
res = ivtv_yuv_udma_frame(itv, &dma_args);
|
|
mutex_lock(&itv->serialize_lock);
|
|
return res;
|
|
}
|
|
|
|
/* IVTV_IOC_DMA_FRAME ioctl handler */
|
|
int ivtv_yuv_prep_frame(struct ivtv *itv, struct ivtv_dma_frame *args)
|
|
{
|
|
int res;
|
|
|
|
/* IVTV_DEBUG_INFO("yuv_prep_frame\n"); */
|
|
ivtv_yuv_next_free(itv);
|
|
ivtv_yuv_setup_frame(itv, args);
|
|
/* Wait for frame DMA. Note that serialize_lock is locked,
|
|
so to allow other processes to access the driver while
|
|
we are waiting unlock first and later lock again. */
|
|
mutex_unlock(&itv->serialize_lock);
|
|
res = ivtv_yuv_udma_frame(itv, args);
|
|
mutex_lock(&itv->serialize_lock);
|
|
return res;
|
|
}
|
|
|
|
void ivtv_yuv_close(struct ivtv *itv)
|
|
{
|
|
struct yuv_playback_info *yi = &itv->yuv_info;
|
|
int h_filter, v_filter_1, v_filter_2;
|
|
|
|
IVTV_DEBUG_YUV("ivtv_yuv_close\n");
|
|
mutex_unlock(&itv->serialize_lock);
|
|
ivtv_waitq(&itv->vsync_waitq);
|
|
mutex_lock(&itv->serialize_lock);
|
|
|
|
yi->running = 0;
|
|
atomic_set(&yi->next_dma_frame, -1);
|
|
atomic_set(&yi->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(yi->reg_2898 | 0x01000000, 0x2898);
|
|
|
|
write_reg(yi->reg_2834, 0x02834);
|
|
write_reg(yi->reg_2838, 0x02838);
|
|
write_reg(yi->reg_283c, 0x0283c);
|
|
write_reg(yi->reg_2840, 0x02840);
|
|
write_reg(yi->reg_2844, 0x02844);
|
|
write_reg(yi->reg_2848, 0x02848);
|
|
write_reg(yi->reg_2854, 0x02854);
|
|
write_reg(yi->reg_285c, 0x0285c);
|
|
write_reg(yi->reg_2864, 0x02864);
|
|
write_reg(yi->reg_2870, 0x02870);
|
|
write_reg(yi->reg_2874, 0x02874);
|
|
write_reg(yi->reg_2890, 0x02890);
|
|
write_reg(yi->reg_289c, 0x0289c);
|
|
|
|
write_reg(yi->reg_2918, 0x02918);
|
|
write_reg(yi->reg_291c, 0x0291c);
|
|
write_reg(yi->reg_2920, 0x02920);
|
|
write_reg(yi->reg_2924, 0x02924);
|
|
write_reg(yi->reg_2928, 0x02928);
|
|
write_reg(yi->reg_292c, 0x0292c);
|
|
write_reg(yi->reg_2930, 0x02930);
|
|
write_reg(yi->reg_2934, 0x02934);
|
|
write_reg(yi->reg_2938, 0x02938);
|
|
write_reg(yi->reg_293c, 0x0293c);
|
|
write_reg(yi->reg_2940, 0x02940);
|
|
write_reg(yi->reg_2944, 0x02944);
|
|
write_reg(yi->reg_2948, 0x02948);
|
|
write_reg(yi->reg_294c, 0x0294c);
|
|
write_reg(yi->reg_2950, 0x02950);
|
|
write_reg(yi->reg_2954, 0x02954);
|
|
write_reg(yi->reg_2958, 0x02958);
|
|
write_reg(yi->reg_295c, 0x0295c);
|
|
write_reg(yi->reg_2960, 0x02960);
|
|
write_reg(yi->reg_2964, 0x02964);
|
|
write_reg(yi->reg_2968, 0x02968);
|
|
write_reg(yi->reg_296c, 0x0296c);
|
|
write_reg(yi->reg_2970, 0x02970);
|
|
|
|
/* Prepare to restore filters */
|
|
|
|
/* First the horizontal filter */
|
|
if ((yi->reg_2834 & 0x0000FFFF) == (yi->reg_2834 >> 16)) {
|
|
/* An exact size match uses filter 0 */
|
|
h_filter = 0;
|
|
} else {
|
|
/* Figure out which filter to use */
|
|
h_filter = ((yi->reg_2834 << 16) / (yi->reg_2834 >> 16)) >> 15;
|
|
h_filter = (h_filter >> 1) + (h_filter & 1);
|
|
/* Only an exact size match can use filter 0. */
|
|
h_filter += !h_filter;
|
|
}
|
|
|
|
/* Now the vertical filter */
|
|
if ((yi->reg_2918 & 0x0000FFFF) == (yi->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 = ((yi->reg_2918 << 16) / (yi->reg_2918 >> 16)) >> 15;
|
|
v_filter_1 = (v_filter_1 >> 1) + (v_filter_1 & 1);
|
|
/* Only an exact size match can use filter 0 */
|
|
v_filter_1 += !v_filter_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 (yi->blanking_ptr) {
|
|
kfree(yi->blanking_ptr);
|
|
yi->blanking_ptr = NULL;
|
|
dma_unmap_single(&itv->pdev->dev, yi->blanking_dmaptr,
|
|
720 * 16, DMA_TO_DEVICE);
|
|
}
|
|
|
|
/* Invalidate the old dimension information */
|
|
yi->old_frame_info.src_w = 0;
|
|
yi->old_frame_info.src_h = 0;
|
|
yi->old_frame_info_args.src_w = 0;
|
|
yi->old_frame_info_args.src_h = 0;
|
|
|
|
/* All done. */
|
|
clear_bit(IVTV_F_I_DECODING_YUV, &itv->i_flags);
|
|
}
|