diff options
Diffstat (limited to 'drivers/media/common/saa7146/saa7146_hlp.c')
| -rw-r--r-- | drivers/media/common/saa7146/saa7146_hlp.c | 1046 |
1 files changed, 0 insertions, 1046 deletions
diff --git a/drivers/media/common/saa7146/saa7146_hlp.c b/drivers/media/common/saa7146/saa7146_hlp.c deleted file mode 100644 index 6c9946a402ee..000000000000 --- a/drivers/media/common/saa7146/saa7146_hlp.c +++ /dev/null @@ -1,1046 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/kernel.h> -#include <linux/export.h> -#include <media/drv-intf/saa7146_vv.h> - -static void calculate_output_format_register(struct saa7146_dev* saa, u32 palette, u32* clip_format) -{ - /* clear out the necessary bits */ - *clip_format &= 0x0000ffff; - /* set these bits new */ - *clip_format |= (( ((palette&0xf00)>>8) << 30) | ((palette&0x00f) << 24) | (((palette&0x0f0)>>4) << 16)); -} - -static void calculate_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync, u32* hps_ctrl) -{ - *hps_ctrl &= ~(MASK_30 | MASK_31 | MASK_28); - *hps_ctrl |= (source << 30) | (sync << 28); -} - -static void calculate_hxo_and_hyo(struct saa7146_vv *vv, u32* hps_h_scale, u32* hps_ctrl) -{ - int hyo = 0, hxo = 0; - - hyo = vv->standard->v_offset; - hxo = vv->standard->h_offset; - - *hps_h_scale &= ~(MASK_B0 | 0xf00); - *hps_h_scale |= (hxo << 0); - - *hps_ctrl &= ~(MASK_W0 | MASK_B2); - *hps_ctrl |= (hyo << 12); -} - -/* helper functions for the calculation of the horizontal- and vertical - scaling registers, clip-format-register etc ... - these functions take pointers to the (most-likely read-out - original-values) and manipulate them according to the requested - changes. -*/ - -/* hps_coeff used for CXY and CXUV; scale 1/1 -> scale 1/64 */ -static struct { - u16 hps_coeff; - u16 weight_sum; -} hps_h_coeff_tab [] = { - {0x00, 2}, {0x02, 4}, {0x00, 4}, {0x06, 8}, {0x02, 8}, - {0x08, 8}, {0x00, 8}, {0x1E, 16}, {0x0E, 8}, {0x26, 8}, - {0x06, 8}, {0x42, 8}, {0x02, 8}, {0x80, 8}, {0x00, 8}, - {0xFE, 16}, {0xFE, 8}, {0x7E, 8}, {0x7E, 8}, {0x3E, 8}, - {0x3E, 8}, {0x1E, 8}, {0x1E, 8}, {0x0E, 8}, {0x0E, 8}, - {0x06, 8}, {0x06, 8}, {0x02, 8}, {0x02, 8}, {0x00, 8}, - {0x00, 8}, {0xFE, 16}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, - {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, - {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, - {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0x7E, 8}, - {0x7E, 8}, {0x3E, 8}, {0x3E, 8}, {0x1E, 8}, {0x1E, 8}, - {0x0E, 8}, {0x0E, 8}, {0x06, 8}, {0x06, 8}, {0x02, 8}, - {0x02, 8}, {0x00, 8}, {0x00, 8}, {0xFE, 16} -}; - -/* table of attenuation values for horizontal scaling */ -static u8 h_attenuation[] = { 1, 2, 4, 8, 2, 4, 8, 16, 0}; - -/* calculate horizontal scale registers */ -static int calculate_h_scale_registers(struct saa7146_dev *dev, - int in_x, int out_x, int flip_lr, - u32* hps_ctrl, u32* hps_v_gain, u32* hps_h_prescale, u32* hps_h_scale) -{ - /* horizontal prescaler */ - u32 dcgx = 0, xpsc = 0, xacm = 0, cxy = 0, cxuv = 0; - /* horizontal scaler */ - u32 xim = 0, xp = 0, xsci =0; - /* vertical scale & gain */ - u32 pfuv = 0; - - /* helper variables */ - u32 h_atten = 0, i = 0; - - if ( 0 == out_x ) { - return -EINVAL; - } - - /* mask out vanity-bit */ - *hps_ctrl &= ~MASK_29; - - /* calculate prescale-(xspc)-value: [n .. 1/2) : 1 - [1/2 .. 1/3) : 2 - [1/3 .. 1/4) : 3 - ... */ - if (in_x > out_x) { - xpsc = in_x / out_x; - } - else { - /* zooming */ - xpsc = 1; - } - - /* if flip_lr-bit is set, number of pixels after - horizontal prescaling must be < 384 */ - if ( 0 != flip_lr ) { - - /* set vanity bit */ - *hps_ctrl |= MASK_29; - - while (in_x / xpsc >= 384 ) - xpsc++; - } - /* if zooming is wanted, number of pixels after - horizontal prescaling must be < 768 */ - else { - while ( in_x / xpsc >= 768 ) - xpsc++; - } - - /* maximum prescale is 64 (p.69) */ - if ( xpsc > 64 ) - xpsc = 64; - - /* keep xacm clear*/ - xacm = 0; - - /* set horizontal filter parameters (CXY = CXUV) */ - cxy = hps_h_coeff_tab[( (xpsc - 1) < 63 ? (xpsc - 1) : 63 )].hps_coeff; - cxuv = cxy; - - /* calculate and set horizontal fine scale (xsci) */ - - /* bypass the horizontal scaler ? */ - if ( (in_x == out_x) && ( 1 == xpsc ) ) - xsci = 0x400; - else - xsci = ( (1024 * in_x) / (out_x * xpsc) ) + xpsc; - - /* set start phase for horizontal fine scale (xp) to 0 */ - xp = 0; - - /* set xim, if we bypass the horizontal scaler */ - if ( 0x400 == xsci ) - xim = 1; - else - xim = 0; - - /* if the prescaler is bypassed, enable horizontal - accumulation mode (xacm) and clear dcgx */ - if( 1 == xpsc ) { - xacm = 1; - dcgx = 0; - } else { - xacm = 0; - /* get best match in the table of attenuations - for horizontal scaling */ - h_atten = hps_h_coeff_tab[( (xpsc - 1) < 63 ? (xpsc - 1) : 63 )].weight_sum; - - for (i = 0; h_attenuation[i] != 0; i++) { - if (h_attenuation[i] >= h_atten) - break; - } - - dcgx = i; - } - - /* the horizontal scaling increment controls the UV filter - to reduce the bandwidth to improve the display quality, - so set it ... */ - if ( xsci == 0x400) - pfuv = 0x00; - else if ( xsci < 0x600) - pfuv = 0x01; - else if ( xsci < 0x680) - pfuv = 0x11; - else if ( xsci < 0x700) - pfuv = 0x22; - else - pfuv = 0x33; - - - *hps_v_gain &= MASK_W0|MASK_B2; - *hps_v_gain |= (pfuv << 24); - - *hps_h_scale &= ~(MASK_W1 | 0xf000); - *hps_h_scale |= (xim << 31) | (xp << 24) | (xsci << 12); - - *hps_h_prescale |= (dcgx << 27) | ((xpsc-1) << 18) | (xacm << 17) | (cxy << 8) | (cxuv << 0); - - return 0; -} - -static struct { - u16 hps_coeff; - u16 weight_sum; -} hps_v_coeff_tab [] = { - {0x0100, 2}, {0x0102, 4}, {0x0300, 4}, {0x0106, 8}, {0x0502, 8}, - {0x0708, 8}, {0x0F00, 8}, {0x011E, 16}, {0x110E, 16}, {0x1926, 16}, - {0x3906, 16}, {0x3D42, 16}, {0x7D02, 16}, {0x7F80, 16}, {0xFF00, 16}, - {0x01FE, 32}, {0x01FE, 32}, {0x817E, 32}, {0x817E, 32}, {0xC13E, 32}, - {0xC13E, 32}, {0xE11E, 32}, {0xE11E, 32}, {0xF10E, 32}, {0xF10E, 32}, - {0xF906, 32}, {0xF906, 32}, {0xFD02, 32}, {0xFD02, 32}, {0xFF00, 32}, - {0xFF00, 32}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, - {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, - {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, - {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x817E, 64}, - {0x817E, 64}, {0xC13E, 64}, {0xC13E, 64}, {0xE11E, 64}, {0xE11E, 64}, - {0xF10E, 64}, {0xF10E, 64}, {0xF906, 64}, {0xF906, 64}, {0xFD02, 64}, - {0xFD02, 64}, {0xFF00, 64}, {0xFF00, 64}, {0x01FE, 128} -}; - -/* table of attenuation values for vertical scaling */ -static u16 v_attenuation[] = { 2, 4, 8, 16, 32, 64, 128, 256, 0}; - -/* calculate vertical scale registers */ -static int calculate_v_scale_registers(struct saa7146_dev *dev, enum v4l2_field field, - int in_y, int out_y, u32* hps_v_scale, u32* hps_v_gain) -{ - int lpi = 0; - - /* vertical scaling */ - u32 yacm = 0, ysci = 0, yacl = 0, ypo = 0, ype = 0; - /* vertical scale & gain */ - u32 dcgy = 0, cya_cyb = 0; - - /* helper variables */ - u32 v_atten = 0, i = 0; - - /* error, if vertical zooming */ - if ( in_y < out_y ) { - return -EINVAL; - } - - /* linear phase interpolation may be used - if scaling is between 1 and 1/2 (both fields used) - or scaling is between 1/2 and 1/4 (if only one field is used) */ - - if (V4L2_FIELD_HAS_BOTH(field)) { - if( 2*out_y >= in_y) { - lpi = 1; - } - } else if (field == V4L2_FIELD_TOP - || field == V4L2_FIELD_ALTERNATE - || field == V4L2_FIELD_BOTTOM) { - if( 4*out_y >= in_y ) { - lpi = 1; - } - out_y *= 2; - } - if( 0 != lpi ) { - - yacm = 0; - yacl = 0; - cya_cyb = 0x00ff; - - /* calculate scaling increment */ - if ( in_y > out_y ) - ysci = ((1024 * in_y) / (out_y + 1)) - 1024; - else - ysci = 0; - - dcgy = 0; - - /* calculate ype and ypo */ - ype = ysci / 16; - ypo = ype + (ysci / 64); - - } else { - yacm = 1; - - /* calculate scaling increment */ - ysci = (((10 * 1024 * (in_y - out_y - 1)) / in_y) + 9) / 10; - - /* calculate ype and ypo */ - ypo = ype = ((ysci + 15) / 16); - - /* the sequence length interval (yacl) has to be set according - to the prescale value, e.g. [n .. 1/2) : 0 - [1/2 .. 1/3) : 1 - [1/3 .. 1/4) : 2 - ... */ - if ( ysci < 512) { - yacl = 0; - } else { - yacl = ( ysci / (1024 - ysci) ); - } - - /* get filter coefficients for cya, cyb from table hps_v_coeff_tab */ - cya_cyb = hps_v_coeff_tab[ (yacl < 63 ? yacl : 63 ) ].hps_coeff; - - /* get best match in the table of attenuations for vertical scaling */ - v_atten = hps_v_coeff_tab[ (yacl < 63 ? yacl : 63 ) ].weight_sum; - - for (i = 0; v_attenuation[i] != 0; i++) { - if (v_attenuation[i] >= v_atten) - break; - } - - dcgy = i; - } - - /* ypo and ype swapped in spec ? */ - *hps_v_scale |= (yacm << 31) | (ysci << 21) | (yacl << 15) | (ypo << 8 ) | (ype << 1); - - *hps_v_gain &= ~(MASK_W0|MASK_B2); - *hps_v_gain |= (dcgy << 16) | (cya_cyb << 0); - - return 0; -} - -/* simple bubble-sort algorithm with duplicate elimination */ -static int sort_and_eliminate(u32* values, int* count) -{ - int low = 0, high = 0, top = 0; - int cur = 0, next = 0; - - /* sanity checks */ - if( (0 > *count) || (NULL == values) ) { - return -EINVAL; - } - - /* bubble sort the first @count items of the array @values */ - for( top = *count; top > 0; top--) { - for( low = 0, high = 1; high < top; low++, high++) { - if( values[low] > values[high] ) - swap(values[low], values[high]); - } - } - - /* remove duplicate items */ - for( cur = 0, next = 1; next < *count; next++) { - if( values[cur] != values[next]) - values[++cur] = values[next]; - } - - *count = cur + 1; - - return 0; -} - -static void calculate_clipping_registers_rect(struct saa7146_dev *dev, struct saa7146_fh *fh, - struct saa7146_video_dma *vdma2, u32* clip_format, u32* arbtr_ctrl, enum v4l2_field field) -{ - struct saa7146_vv *vv = dev->vv_data; - __le32 *clipping = vv->d_clipping.cpu_addr; - - int width = vv->ov.win.w.width; - int height = vv->ov.win.w.height; - int clipcount = vv->ov.nclips; - - u32 line_list[32]; - u32 pixel_list[32]; - int numdwords = 0; - - int i = 0, j = 0; - int cnt_line = 0, cnt_pixel = 0; - - int x[32], y[32], w[32], h[32]; - - /* clear out memory */ - memset(&line_list[0], 0x00, sizeof(u32)*32); - memset(&pixel_list[0], 0x00, sizeof(u32)*32); - memset(clipping, 0x00, SAA7146_CLIPPING_MEM); - - /* fill the line and pixel-lists */ - for(i = 0; i < clipcount; i++) { - int l = 0, r = 0, t = 0, b = 0; - - x[i] = vv->ov.clips[i].c.left; - y[i] = vv->ov.clips[i].c.top; - w[i] = vv->ov.clips[i].c.width; - h[i] = vv->ov.clips[i].c.height; - - if( w[i] < 0) { - x[i] += w[i]; w[i] = -w[i]; - } - if( h[i] < 0) { - y[i] += h[i]; h[i] = -h[i]; - } - if( x[i] < 0) { - w[i] += x[i]; x[i] = 0; - } - if( y[i] < 0) { - h[i] += y[i]; y[i] = 0; - } - if( 0 != vv->vflip ) { - y[i] = height - y[i] - h[i]; - } - - l = x[i]; - r = x[i]+w[i]; - t = y[i]; - b = y[i]+h[i]; - - /* insert left/right coordinates */ - pixel_list[ 2*i ] = min_t(int, l, width); - pixel_list[(2*i)+1] = min_t(int, r, width); - /* insert top/bottom coordinates */ - line_list[ 2*i ] = min_t(int, t, height); - line_list[(2*i)+1] = min_t(int, b, height); - } - - /* sort and eliminate lists */ - cnt_line = cnt_pixel = 2*clipcount; - sort_and_eliminate( &pixel_list[0], &cnt_pixel ); - sort_and_eliminate( &line_list[0], &cnt_line ); - - /* calculate the number of used u32s */ - numdwords = max_t(int, (cnt_line+1), (cnt_pixel+1))*2; - numdwords = max_t(int, 4, numdwords); - numdwords = min_t(int, 64, numdwords); - - /* fill up cliptable */ - for(i = 0; i < cnt_pixel; i++) { - clipping[2*i] |= cpu_to_le32(pixel_list[i] << 16); - } - for(i = 0; i < cnt_line; i++) { - clipping[(2*i)+1] |= cpu_to_le32(line_list[i] << 16); - } - - /* fill up cliptable with the display infos */ - for(j = 0; j < clipcount; j++) { - - for(i = 0; i < cnt_pixel; i++) { - - if( x[j] < 0) - x[j] = 0; - - if( pixel_list[i] < (x[j] + w[j])) { - - if ( pixel_list[i] >= x[j] ) { - clipping[2*i] |= cpu_to_le32(1 << j); - } - } - } - for(i = 0; i < cnt_line; i++) { - - if( y[j] < 0) - y[j] = 0; - - if( line_list[i] < (y[j] + h[j]) ) { - - if( line_list[i] >= y[j] ) { - clipping[(2*i)+1] |= cpu_to_le32(1 << j); - } - } - } - } - - /* adjust arbitration control register */ - *arbtr_ctrl &= 0xffff00ff; - *arbtr_ctrl |= 0x00001c00; - - vdma2->base_even = vv->d_clipping.dma_handle; - vdma2->base_odd = vv->d_clipping.dma_handle; - vdma2->prot_addr = vv->d_clipping.dma_handle+((sizeof(u32))*(numdwords)); - vdma2->base_page = 0x04; - vdma2->pitch = 0x00; - vdma2->num_line_byte = (0 << 16 | (sizeof(u32))*(numdwords-1) ); - - /* set clipping-mode. this depends on the field(s) used */ - *clip_format &= 0xfffffff7; - if (V4L2_FIELD_HAS_BOTH(field)) { - *clip_format |= 0x00000008; - } else { - *clip_format |= 0x00000000; - } -} - -/* disable clipping */ -static void saa7146_disable_clipping(struct saa7146_dev *dev) -{ - u32 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL); - - /* mask out relevant bits (=lower word)*/ - clip_format &= MASK_W1; - - /* upload clipping-registers*/ - saa7146_write(dev, CLIP_FORMAT_CTRL,clip_format); - saa7146_write(dev, MC2, (MASK_05 | MASK_21)); - - /* disable video dma2 */ - saa7146_write(dev, MC1, MASK_21); -} - -static void saa7146_set_clipping_rect(struct saa7146_fh *fh) -{ - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - enum v4l2_field field = vv->ov.win.field; - struct saa7146_video_dma vdma2; - u32 clip_format; - u32 arbtr_ctrl; - - /* check clipcount, disable clipping if clipcount == 0*/ - if (vv->ov.nclips == 0) { - saa7146_disable_clipping(dev); - return; - } - - clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL); - arbtr_ctrl = saa7146_read(dev, PCI_BT_V1); - - calculate_clipping_registers_rect(dev, fh, &vdma2, &clip_format, &arbtr_ctrl, field); - - /* set clipping format */ - clip_format &= 0xffff0008; - clip_format |= (SAA7146_CLIPPING_RECT << 4); - - /* prepare video dma2 */ - saa7146_write(dev, BASE_EVEN2, vdma2.base_even); - saa7146_write(dev, BASE_ODD2, vdma2.base_odd); - saa7146_write(dev, PROT_ADDR2, vdma2.prot_addr); - saa7146_write(dev, BASE_PAGE2, vdma2.base_page); - saa7146_write(dev, PITCH2, vdma2.pitch); - saa7146_write(dev, NUM_LINE_BYTE2, vdma2.num_line_byte); - - /* prepare the rest */ - saa7146_write(dev, CLIP_FORMAT_CTRL,clip_format); - saa7146_write(dev, PCI_BT_V1, arbtr_ctrl); - - /* upload clip_control-register, clipping-registers, enable video dma2 */ - saa7146_write(dev, MC2, (MASK_05 | MASK_21 | MASK_03 | MASK_19)); - saa7146_write(dev, MC1, (MASK_05 | MASK_21)); -} - -static void saa7146_set_window(struct saa7146_dev *dev, int width, int height, enum v4l2_field field) -{ - struct saa7146_vv *vv = dev->vv_data; - - int source = vv->current_hps_source; - int sync = vv->current_hps_sync; - - u32 hps_v_scale = 0, hps_v_gain = 0, hps_ctrl = 0, hps_h_prescale = 0, hps_h_scale = 0; - - /* set vertical scale */ - hps_v_scale = 0; /* all bits get set by the function-call */ - hps_v_gain = 0; /* fixme: saa7146_read(dev, HPS_V_GAIN);*/ - calculate_v_scale_registers(dev, field, vv->standard->v_field*2, height, &hps_v_scale, &hps_v_gain); - - /* set horizontal scale */ - hps_ctrl = 0; - hps_h_prescale = 0; /* all bits get set in the function */ - hps_h_scale = 0; - calculate_h_scale_registers(dev, vv->standard->h_pixels, width, vv->hflip, &hps_ctrl, &hps_v_gain, &hps_h_prescale, &hps_h_scale); - - /* set hyo and hxo */ - calculate_hxo_and_hyo(vv, &hps_h_scale, &hps_ctrl); - calculate_hps_source_and_sync(dev, source, sync, &hps_ctrl); - - /* write out new register contents */ - saa7146_write(dev, HPS_V_SCALE, hps_v_scale); - saa7146_write(dev, HPS_V_GAIN, hps_v_gain); - saa7146_write(dev, HPS_CTRL, hps_ctrl); - saa7146_write(dev, HPS_H_PRESCALE,hps_h_prescale); - saa7146_write(dev, HPS_H_SCALE, hps_h_scale); - - /* upload shadow-ram registers */ - saa7146_write(dev, MC2, (MASK_05 | MASK_06 | MASK_21 | MASK_22) ); -} - -/* calculate the new memory offsets for a desired position */ -static void saa7146_set_position(struct saa7146_dev *dev, int w_x, int w_y, int w_height, enum v4l2_field field, u32 pixelformat) -{ - struct saa7146_vv *vv = dev->vv_data; - struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev, pixelformat); - - int b_depth = vv->ov_fmt->depth; - int b_bpl = vv->ov_fb.fmt.bytesperline; - /* The unsigned long cast is to remove a 64-bit compile warning since - it looks like a 64-bit address is cast to a 32-bit value, even - though the base pointer is really a 32-bit physical address that - goes into a 32-bit DMA register. - FIXME: might not work on some 64-bit platforms, but see the FIXME - in struct v4l2_framebuffer (videodev2.h) for that. - */ - u32 base = (u32)(unsigned long)vv->ov_fb.base; - - struct saa7146_video_dma vdma1; - - /* calculate memory offsets for picture, look if we shall top-down-flip */ - vdma1.pitch = 2*b_bpl; - if ( 0 == vv->vflip ) { - vdma1.base_even = base + (w_y * (vdma1.pitch/2)) + (w_x * (b_depth / 8)); - vdma1.base_odd = vdma1.base_even + (vdma1.pitch / 2); - vdma1.prot_addr = vdma1.base_even + (w_height * (vdma1.pitch / 2)); - } - else { - vdma1.base_even = base + ((w_y+w_height) * (vdma1.pitch/2)) + (w_x * (b_depth / 8)); - vdma1.base_odd = vdma1.base_even - (vdma1.pitch / 2); - vdma1.prot_addr = vdma1.base_odd - (w_height * (vdma1.pitch / 2)); - } - - if (V4L2_FIELD_HAS_BOTH(field)) { - } else if (field == V4L2_FIELD_ALTERNATE) { - /* fixme */ - vdma1.base_odd = vdma1.prot_addr; - vdma1.pitch /= 2; - } else if (field == V4L2_FIELD_TOP) { - vdma1.base_odd = vdma1.prot_addr; - vdma1.pitch /= 2; - } else if (field == V4L2_FIELD_BOTTOM) { - vdma1.base_odd = vdma1.base_even; - vdma1.base_even = vdma1.prot_addr; - vdma1.pitch /= 2; - } - - if ( 0 != vv->vflip ) { - vdma1.pitch *= -1; - } - - vdma1.base_page = sfmt->swap; - vdma1.num_line_byte = (vv->standard->v_field<<16)+vv->standard->h_pixels; - - saa7146_write_out_dma(dev, 1, &vdma1); -} - -static void saa7146_set_output_format(struct saa7146_dev *dev, unsigned long palette) -{ - u32 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL); - - /* call helper function */ - calculate_output_format_register(dev,palette,&clip_format); - - /* update the hps registers */ - saa7146_write(dev, CLIP_FORMAT_CTRL, clip_format); - saa7146_write(dev, MC2, (MASK_05 | MASK_21)); -} - -/* select input-source */ -void saa7146_set_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync) -{ - struct saa7146_vv *vv = dev->vv_data; - u32 hps_ctrl = 0; - - /* read old state */ - hps_ctrl = saa7146_read(dev, HPS_CTRL); - - hps_ctrl &= ~( MASK_31 | MASK_30 | MASK_28 ); - hps_ctrl |= (source << 30) | (sync << 28); - - /* write back & upload register */ - saa7146_write(dev, HPS_CTRL, hps_ctrl); - saa7146_write(dev, MC2, (MASK_05 | MASK_21)); - - vv->current_hps_source = source; - vv->current_hps_sync = sync; -} -EXPORT_SYMBOL_GPL(saa7146_set_hps_source_and_sync); - -int saa7146_enable_overlay(struct saa7146_fh *fh) -{ - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - - saa7146_set_window(dev, vv->ov.win.w.width, vv->ov.win.w.height, vv->ov.win.field); - saa7146_set_position(dev, vv->ov.win.w.left, vv->ov.win.w.top, vv->ov.win.w.height, vv->ov.win.field, vv->ov_fmt->pixelformat); - saa7146_set_output_format(dev, vv->ov_fmt->trans); - saa7146_set_clipping_rect(fh); - - /* enable video dma1 */ - saa7146_write(dev, MC1, (MASK_06 | MASK_22)); - return 0; -} - -void saa7146_disable_overlay(struct saa7146_fh *fh) -{ - struct saa7146_dev *dev = fh->dev; - - /* disable clipping + video dma1 */ - saa7146_disable_clipping(dev); - saa7146_write(dev, MC1, MASK_22); -} - -void saa7146_write_out_dma(struct saa7146_dev* dev, int which, struct saa7146_video_dma* vdma) -{ - int where = 0; - - if( which < 1 || which > 3) { - return; - } - - /* calculate starting address */ - where = (which-1)*0x18; - - saa7146_write(dev, where, vdma->base_odd); - saa7146_write(dev, where+0x04, vdma->base_even); - saa7146_write(dev, where+0x08, vdma->prot_addr); - saa7146_write(dev, where+0x0c, vdma->pitch); - saa7146_write(dev, where+0x10, vdma->base_page); - saa7146_write(dev, where+0x14, vdma->num_line_byte); - - /* upload */ - saa7146_write(dev, MC2, (MASK_02<<(which-1))|(MASK_18<<(which-1))); -/* - printk("vdma%d.base_even: 0x%08x\n", which,vdma->base_even); - printk("vdma%d.base_odd: 0x%08x\n", which,vdma->base_odd); - printk("vdma%d.prot_addr: 0x%08x\n", which,vdma->prot_addr); - printk("vdma%d.base_page: 0x%08x\n", which,vdma->base_page); - printk("vdma%d.pitch: 0x%08x\n", which,vdma->pitch); - printk("vdma%d.num_line_byte: 0x%08x\n", which,vdma->num_line_byte); -*/ -} - -static int calculate_video_dma_grab_packed(struct saa7146_dev* dev, struct saa7146_buf *buf) -{ - struct saa7146_vv *vv = dev->vv_data; - struct saa7146_video_dma vdma1; - - struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); - - int width = buf->fmt->width; - int height = buf->fmt->height; - int bytesperline = buf->fmt->bytesperline; - enum v4l2_field field = buf->fmt->field; - - int depth = sfmt->depth; - - DEB_CAP("[size=%dx%d,fields=%s]\n", - width, height, v4l2_field_names[field]); - - if( bytesperline != 0) { - vdma1.pitch = bytesperline*2; - } else { - vdma1.pitch = (width*depth*2)/8; - } - vdma1.num_line_byte = ((vv->standard->v_field<<16) + vv->standard->h_pixels); - vdma1.base_page = buf->pt[0].dma | ME1 | sfmt->swap; - - if( 0 != vv->vflip ) { - vdma1.prot_addr = buf->pt[0].offset; - vdma1.base_even = buf->pt[0].offset+(vdma1.pitch/2)*height; - vdma1.base_odd = vdma1.base_even - (vdma1.pitch/2); - } else { - vdma1.base_even = buf->pt[0].offset; - vdma1.base_odd = vdma1.base_even + (vdma1.pitch/2); - vdma1.prot_addr = buf->pt[0].offset+(vdma1.pitch/2)*height; - } - - if (V4L2_FIELD_HAS_BOTH(field)) { - } else if (field == V4L2_FIELD_ALTERNATE) { - /* fixme */ - if ( vv->last_field == V4L2_FIELD_TOP ) { - vdma1.base_odd = vdma1.prot_addr; - vdma1.pitch /= 2; - } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) { - vdma1.base_odd = vdma1.base_even; - vdma1.base_even = vdma1.prot_addr; - vdma1.pitch /= 2; - } - } else if (field == V4L2_FIELD_TOP) { - vdma1.base_odd = vdma1.prot_addr; - vdma1.pitch /= 2; - } else if (field == V4L2_FIELD_BOTTOM) { - vdma1.base_odd = vdma1.base_even; - vdma1.base_even = vdma1.prot_addr; - vdma1.pitch /= 2; - } - - if( 0 != vv->vflip ) { - vdma1.pitch *= -1; - } - - saa7146_write_out_dma(dev, 1, &vdma1); - return 0; -} - -static int calc_planar_422(struct saa7146_vv *vv, struct saa7146_buf *buf, struct saa7146_video_dma *vdma2, struct saa7146_video_dma *vdma3) -{ - int height = buf->fmt->height; - int width = buf->fmt->width; - - vdma2->pitch = width; - vdma3->pitch = width; - - /* fixme: look at bytesperline! */ - - if( 0 != vv->vflip ) { - vdma2->prot_addr = buf->pt[1].offset; - vdma2->base_even = ((vdma2->pitch/2)*height)+buf->pt[1].offset; - vdma2->base_odd = vdma2->base_even - (vdma2->pitch/2); - - vdma3->prot_addr = buf->pt[2].offset; - vdma3->base_even = ((vdma3->pitch/2)*height)+buf->pt[2].offset; - vdma3->base_odd = vdma3->base_even - (vdma3->pitch/2); - } else { - vdma3->base_even = buf->pt[2].offset; - vdma3->base_odd = vdma3->base_even + (vdma3->pitch/2); - vdma3->prot_addr = (vdma3->pitch/2)*height+buf->pt[2].offset; - - vdma2->base_even = buf->pt[1].offset; - vdma2->base_odd = vdma2->base_even + (vdma2->pitch/2); - vdma2->prot_addr = (vdma2->pitch/2)*height+buf->pt[1].offset; - } - - return 0; -} - -static int calc_planar_420(struct saa7146_vv *vv, struct saa7146_buf *buf, struct saa7146_video_dma *vdma2, struct saa7146_video_dma *vdma3) -{ - int height = buf->fmt->height; - int width = buf->fmt->width; - - vdma2->pitch = width/2; - vdma3->pitch = width/2; - - if( 0 != vv->vflip ) { - vdma2->prot_addr = buf->pt[2].offset; - vdma2->base_even = ((vdma2->pitch/2)*height)+buf->pt[2].offset; - vdma2->base_odd = vdma2->base_even - (vdma2->pitch/2); - - vdma3->prot_addr = buf->pt[1].offset; - vdma3->base_even = ((vdma3->pitch/2)*height)+buf->pt[1].offset; - vdma3->base_odd = vdma3->base_even - (vdma3->pitch/2); - - } else { - vdma3->base_even = buf->pt[2].offset; - vdma3->base_odd = vdma3->base_even + (vdma3->pitch); - vdma3->prot_addr = (vdma3->pitch/2)*height+buf->pt[2].offset; - - vdma2->base_even = buf->pt[1].offset; - vdma2->base_odd = vdma2->base_even + (vdma2->pitch); - vdma2->prot_addr = (vdma2->pitch/2)*height+buf->pt[1].offset; - } - return 0; -} - -static int calculate_video_dma_grab_planar(struct saa7146_dev* dev, struct saa7146_buf *buf) -{ - struct saa7146_vv *vv = dev->vv_data; - struct saa7146_video_dma vdma1; - struct saa7146_video_dma vdma2; - struct saa7146_video_dma vdma3; - - struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); - - int width = buf->fmt->width; - int height = buf->fmt->height; - enum v4l2_field field = buf->fmt->field; - - BUG_ON(0 == buf->pt[0].dma); - BUG_ON(0 == buf->pt[1].dma); - BUG_ON(0 == buf->pt[2].dma); - - DEB_CAP("[size=%dx%d,fields=%s]\n", - width, height, v4l2_field_names[field]); - - /* fixme: look at bytesperline! */ - - /* fixme: what happens for user space buffers here?. The offsets are - most likely wrong, this version here only works for page-aligned - buffers, modifications to the pagetable-functions are necessary...*/ - - vdma1.pitch = width*2; - vdma1.num_line_byte = ((vv->standard->v_field<<16) + vv->standard->h_pixels); - vdma1.base_page = buf->pt[0].dma | ME1; - - if( 0 != vv->vflip ) { - vdma1.prot_addr = buf->pt[0].offset; - vdma1.base_even = ((vdma1.pitch/2)*height)+buf->pt[0].offset; - vdma1.base_odd = vdma1.base_even - (vdma1.pitch/2); - } else { - vdma1.base_even = buf->pt[0].offset; - vdma1.base_odd = vdma1.base_even + (vdma1.pitch/2); - vdma1.prot_addr = (vdma1.pitch/2)*height+buf->pt[0].offset; - } - - vdma2.num_line_byte = 0; /* unused */ - vdma2.base_page = buf->pt[1].dma | ME1; - - vdma3.num_line_byte = 0; /* unused */ - vdma3.base_page = buf->pt[2].dma | ME1; - - switch( sfmt->depth ) { - case 12: { - calc_planar_420(vv,buf,&vdma2,&vdma3); - break; - } - case 16: { - calc_planar_422(vv,buf,&vdma2,&vdma3); - break; - } - default: { - return -1; - } - } - - if (V4L2_FIELD_HAS_BOTH(field)) { - } else if (field == V4L2_FIELD_ALTERNATE) { - /* fixme */ - vdma1.base_odd = vdma1.prot_addr; - vdma1.pitch /= 2; - vdma2.base_odd = vdma2.prot_addr; - vdma2.pitch /= 2; - vdma3.base_odd = vdma3.prot_addr; - vdma3.pitch /= 2; - } else if (field == V4L2_FIELD_TOP) { - vdma1.base_odd = vdma1.prot_addr; - vdma1.pitch /= 2; - vdma2.base_odd = vdma2.prot_addr; - vdma2.pitch /= 2; - vdma3.base_odd = vdma3.prot_addr; - vdma3.pitch /= 2; - } else if (field == V4L2_FIELD_BOTTOM) { - vdma1.base_odd = vdma1.base_even; - vdma1.base_even = vdma1.prot_addr; - vdma1.pitch /= 2; - vdma2.base_odd = vdma2.base_even; - vdma2.base_even = vdma2.prot_addr; - vdma2.pitch /= 2; - vdma3.base_odd = vdma3.base_even; - vdma3.base_even = vdma3.prot_addr; - vdma3.pitch /= 2; - } - - if( 0 != vv->vflip ) { - vdma1.pitch *= -1; - vdma2.pitch *= -1; - vdma3.pitch *= -1; - } - - saa7146_write_out_dma(dev, 1, &vdma1); - if( (sfmt->flags & FORMAT_BYTE_SWAP) != 0 ) { - saa7146_write_out_dma(dev, 3, &vdma2); - saa7146_write_out_dma(dev, 2, &vdma3); - } else { - saa7146_write_out_dma(dev, 2, &vdma2); - saa7146_write_out_dma(dev, 3, &vdma3); - } - return 0; -} - -static void program_capture_engine(struct saa7146_dev *dev, int planar) -{ - struct saa7146_vv *vv = dev->vv_data; - int count = 0; - - unsigned long e_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_E_FID_A : CMD_E_FID_B; - unsigned long o_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_O_FID_A : CMD_O_FID_B; - - /* wait for o_fid_a/b / e_fid_a/b toggle only if rps register 0 is not set*/ - WRITE_RPS0(CMD_PAUSE | CMD_OAN | CMD_SIG0 | o_wait); - WRITE_RPS0(CMD_PAUSE | CMD_OAN | CMD_SIG0 | e_wait); - - /* set rps register 0 */ - WRITE_RPS0(CMD_WR_REG | (1 << 8) | (MC2/4)); - WRITE_RPS0(MASK_27 | MASK_11); - - /* turn on video-dma1 */ - WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); - WRITE_RPS0(MASK_06 | MASK_22); /* => mask */ - WRITE_RPS0(MASK_06 | MASK_22); /* => values */ - if( 0 != planar ) { - /* turn on video-dma2 */ - WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); - WRITE_RPS0(MASK_05 | MASK_21); /* => mask */ - WRITE_RPS0(MASK_05 | MASK_21); /* => values */ - - /* turn on video-dma3 */ - WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); - WRITE_RPS0(MASK_04 | MASK_20); /* => mask */ - WRITE_RPS0(MASK_04 | MASK_20); /* => values */ - } - - /* wait for o_fid_a/b / e_fid_a/b toggle */ - if ( vv->last_field == V4L2_FIELD_INTERLACED ) { - WRITE_RPS0(CMD_PAUSE | o_wait); - WRITE_RPS0(CMD_PAUSE | e_wait); - } else if ( vv->last_field == V4L2_FIELD_TOP ) { - WRITE_RPS0(CMD_PAUSE | (vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? MASK_10 : MASK_09)); - WRITE_RPS0(CMD_PAUSE | o_wait); - } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) { - WRITE_RPS0(CMD_PAUSE | (vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? MASK_10 : MASK_09)); - WRITE_RPS0(CMD_PAUSE | e_wait); - } - - /* turn off video-dma1 */ - WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); - WRITE_RPS0(MASK_22 | MASK_06); /* => mask */ - WRITE_RPS0(MASK_22); /* => values */ - if( 0 != planar ) { - /* turn off video-dma2 */ - WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); - WRITE_RPS0(MASK_05 | MASK_21); /* => mask */ - WRITE_RPS0(MASK_21); /* => values */ - - /* turn off video-dma3 */ - WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); - WRITE_RPS0(MASK_04 | MASK_20); /* => mask */ - WRITE_RPS0(MASK_20); /* => values */ - } - - /* generate interrupt */ - WRITE_RPS0(CMD_INTERRUPT); - - /* stop */ - WRITE_RPS0(CMD_STOP); -} - -void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next) -{ - struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); - struct saa7146_vv *vv = dev->vv_data; - u32 vdma1_prot_addr; - - DEB_CAP("buf:%p, next:%p\n", buf, next); - - vdma1_prot_addr = saa7146_read(dev, PROT_ADDR1); - if( 0 == vdma1_prot_addr ) { - /* clear out beginning of streaming bit (rps register 0)*/ - DEB_CAP("forcing sync to new frame\n"); - saa7146_write(dev, MC2, MASK_27 ); - } - - saa7146_set_window(dev, buf->fmt->width, buf->fmt->height, buf->fmt->field); - saa7146_set_output_format(dev, sfmt->trans); - saa7146_disable_clipping(dev); - - if ( vv->last_field == V4L2_FIELD_INTERLACED ) { - } else if ( vv->last_field == V4L2_FIELD_TOP ) { - vv->last_field = V4L2_FIELD_BOTTOM; - } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) { - vv->last_field = V4L2_FIELD_TOP; - } - - if( 0 != IS_PLANAR(sfmt->trans)) { - calculate_video_dma_grab_planar(dev, buf); - program_capture_engine(dev,1); - } else { - calculate_video_dma_grab_packed(dev, buf); - program_capture_engine(dev,0); - } - -/* - printk("vdma%d.base_even: 0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1)); - printk("vdma%d.base_odd: 0x%08x\n", 1,saa7146_read(dev,BASE_ODD1)); - printk("vdma%d.prot_addr: 0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1)); - printk("vdma%d.base_page: 0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1)); - printk("vdma%d.pitch: 0x%08x\n", 1,saa7146_read(dev,PITCH1)); - printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1)); - printk("vdma%d => vptr : 0x%08x\n", 1,saa7146_read(dev,PCI_VDP1)); -*/ - - /* write the address of the rps-program */ - saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle); - - /* turn on rps */ - saa7146_write(dev, MC1, (MASK_12 | MASK_28)); -} |