diff options
Diffstat (limited to 'drivers/media/pci/ivtv/ivtv-yuv.c')
| -rw-r--r-- | drivers/media/pci/ivtv/ivtv-yuv.c | 1282 |
1 files changed, 1282 insertions, 0 deletions
diff --git a/drivers/media/pci/ivtv/ivtv-yuv.c b/drivers/media/pci/ivtv/ivtv-yuv.c new file mode 100644 index 000000000..4ba10c34a --- /dev/null +++ b/drivers/media/pci/ivtv/ivtv-yuv.c @@ -0,0 +1,1282 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + yuv support + + Copyright (C) 2007 Ian Armstrong <ian@iarmst.demon.co.uk> + + */ + +#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 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); + + /* Pin user pages for DMA Xfer */ + y_pages = pin_user_pages_unlocked(y_dma.uaddr, + y_dma.page_count, &dma->map[0], FOLL_FORCE); + uv_pages = 0; /* silence gcc. value is set and consumed only if: */ + if (y_pages == y_dma.page_count) { + uv_pages = pin_user_pages_unlocked(uv_dma.uaddr, + uv_dma.page_count, &dma->map[y_pages], + FOLL_FORCE); + } + + 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) { + unpin_user_pages(&dma->map[y_pages], uv_pages); + 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) { + unpin_user_pages(dma->map, y_pages); + /* + * Inherit the -EFAULT from rc's + * initialization, but allow it to be + * overridden 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"); + unpin_user_pages(dma->map, dma->page_count); + dma->page_count = 0; + return -ENOMEM; + } + dma->SG_length = dma_map_sg(&itv->pdev->dev, dma->SGlist, + dma->page_count, DMA_TO_DEVICE); + + /* 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 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); +} |