diff options
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-yuv.c')
-rw-r--r-- | drivers/media/video/ivtv/ivtv-yuv.c | 1296 |
1 files changed, 0 insertions, 1296 deletions
diff --git a/drivers/media/video/ivtv/ivtv-yuv.c b/drivers/media/video/ivtv/ivtv-yuv.c deleted file mode 100644 index 2ad65eb29832..000000000000 --- a/drivers/media/video/ivtv/ivtv-yuv.c +++ /dev/null @@ -1,1296 +0,0 @@ -/* - 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-udma.h" -#include "ivtv-yuv.h" - -/* YUV buffer offsets */ -const u32 yuv_offset[IVTV_YUV_BUFFERS] = { - 0x001a8600, - 0x00240400, - 0x002d8200, - 0x00370000, - 0x00029000, - 0x000C0E00, - 0x006B0400, - 0x00748200 -}; - -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; - struct yuv_playback_info *yi = &itv->yuv_info; - u8 frame = yi->draw_frame; - struct yuv_frame_info *f = &yi->new_frame_info[frame]; - int i; - int y_pages, uv_pages; - unsigned long y_buffer_offset, uv_buffer_offset; - int y_decode_height, uv_decode_height, y_size; - - y_buffer_offset = IVTV_DECODER_OFFSET + yuv_offset[frame]; - uv_buffer_offset = y_buffer_offset + IVTV_YUV_BUFFER_UV_OFFSET; - - y_decode_height = uv_decode_height = f->src_h + f->src_y; - - if (f->offset_y) - 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(¤t->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 = 0; /* silence gcc. value is set and consumed only if: */ - if (y_pages == y_dma.page_count) { - uv_pages = get_user_pages(current, current->mm, - uv_dma.uaddr, uv_dma.page_count, 0, 1, - &dma->map[y_pages], NULL); - } - up_read(¤t->mm->mmap_sem); - - if (y_pages != y_dma.page_count || uv_pages != uv_dma.page_count) { - int rc = -EFAULT; - - if (y_pages == y_dma.page_count) { - IVTV_DEBUG_WARN - ("failed to map uv user pages, returned %d " - "expecting %d\n", uv_pages, uv_dma.page_count); - - if (uv_pages >= 0) { - for (i = 0; i < uv_pages; i++) - put_page(dma->map[y_pages + i]); - rc = -EFAULT; - } else { - rc = uv_pages; - } - } else { - IVTV_DEBUG_WARN - ("failed to map y user pages, returned %d " - "expecting %d\n", y_pages, y_dma.page_count); - } - if (y_pages >= 0) { - for (i = 0; i < y_pages; i++) - put_page(dma->map[i]); - /* - * Inherit the -EFAULT from rc's - * initialization, but allow it to be - * overriden by uv_pages above if it was an - * actual errno. - */ - } else { - rc = y_pages; - } - return rc; - } - - dma->page_count = y_pages + uv_pages; - - /* Fill & map SG List */ - if (ivtv_udma_fill_sg_list (dma, &uv_dma, ivtv_udma_fill_sg_list (dma, &y_dma, 0)) < 0) { - IVTV_DEBUG_WARN("could not allocate bounce buffers for highmem userspace buffers\n"); - for (i = 0; i < dma->page_count; i++) { - put_page(dma->map[i]); - } - dma->page_count = 0; - return -ENOMEM; - } - dma->SG_length = pci_map_sg(itv->pdev, 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 (f->offset_y && yi->blanking_dmaptr) { - dma->SGarray[dma->SG_length].size = cpu_to_le32(720*16); - dma->SGarray[dma->SG_length].src = cpu_to_le32(yi->blanking_dmaptr); - dma->SGarray[dma->SG_length].dst = cpu_to_le32(IVTV_DECODER_OFFSET + 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, y, uv; - - for (i = 0, y = 16, uv = 4; i < 16; i++, y += 24, uv += 12) { - if ((read_dec(IVTV_YUV_HORIZONTAL_FILTER_OFFSET + y) != i << 16) || - (read_dec(IVTV_YUV_VERTICAL_FILTER_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) -{ - u32 i, line; - - /* If any filter is -1, then don't update it */ - if (h_filter > -1) { - if (h_filter > 4) - h_filter = 4; - i = IVTV_YUV_HORIZONTAL_FILTER_OFFSET + (h_filter * 384); - for (line = 0; line < 16; line++) { - write_reg(read_dec(i), 0x02804); - write_reg(read_dec(i), 0x0281c); - i += 4; - write_reg(read_dec(i), 0x02808); - write_reg(read_dec(i), 0x02820); - i += 4; - write_reg(read_dec(i), 0x0280c); - write_reg(read_dec(i), 0x02824); - i += 4; - write_reg(read_dec(i), 0x02810); - write_reg(read_dec(i), 0x02828); - i += 4; - write_reg(read_dec(i), 0x02814); - write_reg(read_dec(i), 0x0282c); - i += 8; - write_reg(0, 0x02818); - write_reg(0, 0x02830); - } - IVTV_DEBUG_YUV("h_filter -> %d\n", h_filter); - } - - if (v_filter_1 > -1) { - if (v_filter_1 > 4) - v_filter_1 = 4; - i = IVTV_YUV_VERTICAL_FILTER_OFFSET + (v_filter_1 * 192); - for (line = 0; line < 16; line++) { - write_reg(read_dec(i), 0x02900); - i += 4; - write_reg(read_dec(i), 0x02904); - i += 8; - write_reg(0, 0x02908); - } - 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; - i = IVTV_YUV_VERTICAL_FILTER_OFFSET + (v_filter_2 * 192); - for (line = 0; line < 16; line++) { - write_reg(read_dec(i), 0x0290c); - i += 4; - write_reg(read_dec(i), 0x02910); - i += 8; - write_reg(0, 0x02914); - } - IVTV_DEBUG_YUV("v_filter_2 -> %d\n", v_filter_2); - } -} - -static void ivtv_yuv_handle_horizontal(struct ivtv *itv, struct yuv_frame_info *f) -{ - struct yuv_playback_info *yi = &itv->yuv_info; - 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 - ("Adjust to width %d src_w %d dst_w %d src_x %d dst_x %d\n", - f->tru_w, f->src_w, f->dst_w, f->src_x, f->dst_x); - - /* How wide is the src image */ - x_cutoff = f->src_w + f->src_x; - - /* Set the display width */ - reg_2834 = f->dst_w; - reg_2838 = reg_2834; - - /* Set the display position */ - reg_2890 = f->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 (f->vis_w == 720) { - if ((f->tru_x - f->pan_x > -1) && (f->tru_x - f->pan_x <= 40) && (f->dst_w >= 680)) - reg_2870 = 10 - (f->tru_x - f->pan_x) / 4; - else if ((f->tru_x - f->pan_x < 0) && (f->tru_x - f->pan_x >= -20) && (f->dst_w >= 660)) - reg_2870 = (10 + (f->tru_x - f->pan_x) / 2); - - if (f->dst_w >= f->src_w) - reg_2870 = reg_2870 << 16 | reg_2870; - else - reg_2870 = ((reg_2870 & ~1) << 15) | (reg_2870 & ~1); - } - - if (f->dst_w < f->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 = (f->src_x * ((f->dst_w << 21) / f->src_w)) >> 19; - - if (f->dst_w >= f->src_w) { - x_cutoff &= ~1; - master_width = (f->src_w * 0x00200000) / (f->dst_w); - if (master_width * f->dst_w != f->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 (f->dst_w > f->src_w) - reg_2870_base = ((f->dst_w - f->src_w)<<16) / (f->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 (f->dst_w < f->src_w / 2) { - master_width = (f->src_w * 0x00080000) / f->dst_w; - if (master_width * f->dst_w != f->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 - (((f->src_w + f->src_w / 2) - 1) / f->dst_w)) << 16; - reg_2874 = 0x00000012; - } else { - master_width = (f->src_w * 0x00100000) / f->dst_w; - if (master_width * f->dst_w != f->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 - (((f->src_w * 3) - 1) / f->dst_w)) << 16; - reg_2874 = 0x00000001; - } - - /* Select the horizontal filter */ - if (f->src_w == f->dst_w) { - /* An exact size match uses filter 0 */ - h_filter = 0; - } else { - /* Figure out which filter to use */ - h_filter = ((f->src_w << 16) / f->dst_w) >> 15; - h_filter = (h_filter >> 1) + (h_filter & 1); - /* Only an exact size match can use filter 0 */ - h_filter += !h_filter; - } - - write_reg(reg_2834, 0x02834); - write_reg(reg_2838, 0x02838); - IVTV_DEBUG_YUV("Update reg 0x2834 %08x->%08x 0x2838 %08x->%08x\n", - yi->reg_2834, reg_2834, yi->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", - yi->reg_283c, reg_283c, yi->reg_2844, reg_2844); - - write_reg(0x00080514, 0x02840); - write_reg(0x00100514, 0x02848); - IVTV_DEBUG_YUV("Update reg 0x2840 %08x->%08x 0x2848 %08x->%08x\n", - yi->reg_2840, 0x00080514, yi->reg_2848, 0x00100514); - - write_reg(reg_2854, 0x02854); - IVTV_DEBUG_YUV("Update reg 0x2854 %08x->%08x \n", - yi->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", - yi->reg_285c, reg_285c, yi->reg_2864, reg_2864); - - write_reg(reg_2874, 0x02874); - IVTV_DEBUG_YUV("Update reg 0x2874 %08x->%08x\n", - yi->reg_2874, reg_2874); - - write_reg(reg_2870, 0x02870); - IVTV_DEBUG_YUV("Update reg 0x2870 %08x->%08x\n", - yi->reg_2870, reg_2870); - - write_reg(reg_2890, 0x02890); - IVTV_DEBUG_YUV("Update reg 0x2890 %08x->%08x\n", - yi->reg_2890, reg_2890); - - /* Only update the filter if we really need to */ - if (h_filter != yi->h_filter) { - ivtv_yuv_filter(itv, h_filter, -1, -1); - yi->h_filter = h_filter; - } -} - -static void ivtv_yuv_handle_vertical(struct ivtv *itv, struct yuv_frame_info *f) -{ - struct yuv_playback_info *yi = &itv->yuv_info; - 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_major_y, src_minor_y; - u32 src_major_uv, src_minor_uv; - u32 reg_2964_base, reg_2968_base; - int v_filter_1, v_filter_2; - - IVTV_DEBUG_WARN - ("Adjust to height %d src_h %d dst_h %d src_y %d dst_y %d\n", - f->tru_h, f->src_h, f->dst_h, f->src_y, f->dst_y); - - /* What scaling mode is being used... */ - IVTV_DEBUG_YUV("Scaling mode Y: %s\n", - f->interlaced_y ? "Interlaced" : "Progressive"); - - IVTV_DEBUG_YUV("Scaling mode UV: %s\n", - f->interlaced_uv ? "Interlaced" : "Progressive"); - - /* What is the source video being treated as... */ - IVTV_DEBUG_WARN("Source video: %s\n", - f->interlaced ? "Interlaced" : "Progressive"); - - /* We offset into the image using two different index methods, so split - the y source coord into two parts. */ - if (f->src_y < 8) { - src_minor_uv = f->src_y; - src_major_uv = 0; - } else { - src_minor_uv = 8; - src_major_uv = f->src_y - 8; - } - - src_minor_y = src_minor_uv; - src_major_y = src_major_uv; - - if (f->offset_y) - src_minor_y += 16; - - if (f->interlaced_y) - reg_2918 = (f->dst_h << 16) | (f->src_h + src_minor_y); - else - reg_2918 = (f->dst_h << 16) | ((f->src_h + src_minor_y) << 1); - - 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 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_KERNEL|__GFP_NOWARN); - if (yi->blanking_ptr) { - yi->blanking_dmaptr = pci_map_single(itv->pdev, yi->blanking_ptr, 720*16, PCI_DMA_TODEVICE); - } 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; - pci_unmap_single(itv->pdev, yi->blanking_dmaptr, 720*16, PCI_DMA_TODEVICE); - } - - /* 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); -} |