45 void _ipu_vdi_set_top_field_man(bool top_field_0)
46 {
47 uint32_t reg;
48
49 reg = __raw_readl(VDI_C);
50 if (top_field_0)
51 reg &= ~VDI_C_TOP_FIELD_MAN_1;
52 else
53 reg |= VDI_C_TOP_FIELD_MAN_1;
54 __raw_writel(reg, VDI_C);
55 }
50～54 VDI top field manual, 设置0,1 field哪一个是top field
57 void _ipu_vdi_set_motion(ipu_motion_sel motion_sel)
58 {
59 uint32_t reg;
60
61 reg = __raw_readl(VDI_C);
62 reg &= ~(VDI_C_MOT_SEL_FULL | VDI_C_MOT_SEL_MED | VDI_C_MOT_SEL_LOW);
63 if (motion_sel == HIGH_MOTION)
64 reg |= VDI_C_MOT_SEL_FULL;
65 else if (motion_sel == MED_MOTION)
66 reg |= VDI_C_MOT_SEL_MED;
67 else
68 reg |= VDI_C_MOT_SEL_LOW;
69
70 __raw_writel(reg, VDI_C);
71 }
设置VDI 对动态图像的矫正方式，因为top bottom field在有些sensor上是不同时间点拍摄的，那么对于运动拍摄的top bottom field并不是对齐的，VDI的de-interlaced比dma channel scan-order要做更复杂的处理。
86 void _ipu_ic_enable_task(ipu_channel_t channel)
87 {
88 uint32_t ic_conf;
89
90 ic_conf = __raw_readl(IC_CONF);
91 switch (channel) {
92 case CSI_PRP_VF_MEM:
93 case MEM_PRP_VF_MEM:
94 ic_conf |= IC_CONF_PRPVF_EN;
95 break;
96 case MEM_VDI_PRP_VF_MEM:
97 ic_conf |= IC_CONF_PRPVF_EN;
98 break;
99 case MEM_ROT_VF_MEM:
100 ic_conf |= IC_CONF_PRPVF_ROT_EN;
101 break;
102 case CSI_PRP_ENC_MEM:
103 case MEM_PRP_ENC_MEM:
104 ic_conf |= IC_CONF_PRPENC_EN;
105 break;
106 case MEM_ROT_ENC_MEM:
107 ic_conf |= IC_CONF_PRPENC_ROT_EN;
108 break;
109 case MEM_PP_MEM:
110 ic_conf |= IC_CONF_PP_EN;
111 break;
112 case MEM_ROT_PP_MEM:
113 ic_conf |= IC_CONF_PP_ROT_EN;
114 break;
115 default:
116 break;
117 }
118 __raw_writel(ic_conf, IC_CONF);
119 }
210 void _ipu_ic_init_prpvf(ipu_channel_params_t *params, bool src_is_csi)
211 {
212 uint32_t reg, ic_conf;
213 uint32_t downsizeCoeff, resizeCoeff;
214 ipu_color_space_t in_fmt, out_fmt;
215
216 /* Setup vertical resizing */
217 _calc_resize_coeffs(params->mem_prp_vf_mem.in_height,
218 params->mem_prp_vf_mem.out_height,
219 &resizeCoeff, &downsizeCoeff);
220 reg = (downsizeCoeff << 30) | (resizeCoeff << 16);
221
222 /* Setup horizontal resizing */
223 /* Upadeted for IC split case */
224 if (!(params->mem_prp_vf_mem.outh_resize_ratio)) {
225 _calc_resize_coeffs(params->mem_prp_vf_mem.in_width,
226 params->mem_prp_vf_mem.out_width,
227 &resizeCoeff, &downsizeCoeff);
228 reg |= (downsizeCoeff << 14) | resizeCoeff;
229 } else
230 reg |= params->mem_prp_vf_mem.outh_resize_ratio;
231
232 __raw_writel(reg, IC_PRP_VF_RSC);
233
234 ic_conf = __raw_readl(IC_CONF);
235
236 /* Setup color space conversion */
237 in_fmt = format_to_colorspace(params->mem_prp_vf_mem.in_pixel_fmt);
238 out_fmt = format_to_colorspace(params->mem_prp_vf_mem.out_pixel_fmt);
239 if (in_fmt == RGB) {
240 if ((out_fmt == YCbCr) || (out_fmt == YUV)) {
241 /* Enable RGB->YCBCR CSC1 */
242 _init_csc(IC_TASK_VIEWFINDER, RGB, out_fmt, 1);
243 ic_conf |= IC_CONF_PRPVF_CSC1;
244 }
245 }
246 if ((in_fmt == YCbCr) || (in_fmt == YUV)) {
247 if (out_fmt == RGB) {
248 /* Enable YCBCR->RGB CSC1 */
249 _init_csc(IC_TASK_VIEWFINDER, YCbCr, RGB, 1);
250 ic_conf |= IC_CONF_PRPVF_CSC1;
251 } else {
252 /* TODO: Support YUV<->YCbCr conversion? */
253 }
254 }
255
256 if (params->mem_prp_vf_mem.graphics_combine_en) {
257 ic_conf |= IC_CONF_PRPVF_CMB;
258
259 if (!(ic_conf & IC_CONF_PRPVF_CSC1)) {
260 /* need transparent CSC1 conversion */
261 _init_csc(IC_TASK_VIEWFINDER, RGB, RGB, 1);
262 ic_conf |= IC_CONF_PRPVF_CSC1; /* Enable RGB->RGB CSC */
263 }
264 in_fmt = format_to_colorspace(params->mem_prp_vf_mem.in_g_pixel_fmt);
265 out_fmt = format_to_colorspace(params->mem_prp_vf_mem.out_pixel_fmt);
266 if (in_fmt == RGB) {
267 if ((out_fmt == YCbCr) || (out_fmt == YUV)) {
268 /* Enable RGB->YCBCR CSC2 */
269 _init_csc(IC_TASK_VIEWFINDER, RGB, out_fmt, 2);
270 ic_conf |= IC_CONF_PRPVF_CSC2;
271 }
272 }
273 if ((in_fmt == YCbCr) || (in_fmt == YUV)) {
274 if (out_fmt == RGB) {
275 /* Enable YCBCR->RGB CSC2 */
276 _init_csc(IC_TASK_VIEWFINDER, YCbCr, RGB, 2);
277 ic_conf |= IC_CONF_PRPVF_CSC2;
278 } else {
279 /* TODO: Support YUV<->YCbCr conversion? */
280 }
281 }
282
283 if (params->mem_prp_vf_mem.global_alpha_en) {
284 ic_conf |= IC_CONF_IC_GLB_LOC_A;
285 reg = __raw_readl(IC_CMBP_1);
286 reg &= ~(0xff);
287 reg |= params->mem_prp_vf_mem.alpha;
288 __raw_writel(reg, IC_CMBP_1);
289 } else
290 ic_conf &= ~IC_CONF_IC_GLB_LOC_A;
291
292 if (params->mem_prp_vf_mem.key_color_en) {
293 ic_conf |= IC_CONF_KEY_COLOR_EN;
294 __raw_writel(params->mem_prp_vf_mem.key_color,
295 IC_CMBP_2);
296 } else
297 ic_conf &= ~IC_CONF_KEY_COLOR_EN;
298 } else {
299 ic_conf &= ~IC_CONF_PRPVF_CMB;
300 }
301
302 if (src_is_csi)
303 ic_conf &= ~IC_CONF_RWS_EN;
304 else
305 ic_conf |= IC_CONF_RWS_EN;
306
307 __raw_writel(ic_conf, IC_CONF);
308 }
行217~232计算缩放因子
行237～254 判断输入和输出pixel format, 使能颜色空间转换
行242 根据输入输出pixel format设置颜色转换寄存器的值，
302~305 IC_CONF_RWS_EN: Raw sensro enable, 指明是否一个raw sensor attached, 实在没明白为什么src_is_csi=false就意味着
raw sensor attached。
649 static void _init_csc(uint8_t ic_task, ipu_color_space_t in_format,
650 ipu_color_space_t out_format, int csc_index)
651 {
652
653 /* Y = R * .299 + G * .587 + B * .114;
654 U = R * -.169 + G * -.332 + B * .500 + 128.;
655 V = R * .500 + G * -.419 + B * -.0813 + 128.;*/
656 static const uint32_t rgb2ycbcr_coeff[4][3] = {
657 {0x004D, 0x0096, 0x001D},
658 {0x01D5, 0x01AB, 0x0080},
659 {0x0080, 0x0195, 0x01EB},
660 {0x0000, 0x0200, 0x0200}, /* A0, A1, A2 */
661 };
662
663 /* transparent RGB->RGB matrix for combining
664 */
665 static const uint32_t rgb2rgb_coeff[4][3] = {
666 {0x0080, 0x0000, 0x0000},
667 {0x0000, 0x0080, 0x0000},
668 {0x0000, 0x0000, 0x0080},
669 {0x0000, 0x0000, 0x0000}, /* A0, A1, A2 */
670 };
671
672 /* R = (1.164 * (Y - 16)) + (1.596 * (Cr - 128));
673 G = (1.164 * (Y - 16)) - (0.392 * (Cb - 128)) - (0.813 * (Cr - 128));
674 B = (1.164 * (Y - 16)) + (2.017 * (Cb - 128); */
675 static const uint32_t ycbcr2rgb_coeff[4][3] = {
676 {149, 0, 204},
677 {149, 462, 408},
678 {149, 255, 0},
679 {8192 - 446, 266, 8192 - 554}, /* A0, A1, A2 */
680 };
681
682 uint32_t param;
683 uint32_t *base = NULL;
684
685 if (ic_task == IC_TASK_ENCODER) {
686 base = ipu_tpmem_base + 0x2008 / 4;
687 } else if (ic_task == IC_TASK_VIEWFINDER) {
688 if (csc_index == 1)
689 base = ipu_tpmem_base + 0x4028 / 4;
690 else
691 base = ipu_tpmem_base + 0x4040 / 4;
692 } else if (ic_task == IC_TASK_POST_PROCESSOR) {
693 if (csc_index == 1)
694 base = ipu_tpmem_base + 0x6060 / 4;
695 else
696 base = ipu_tpmem_base + 0x6078 / 4;
697 } else {
698 BUG();
699 }
700
701 if ((in_format == YCbCr) && (out_format == RGB)) {
702 /* Init CSC (YCbCr->RGB) */
703 param = (ycbcr2rgb_coeff[3][0] << 27) |
704 (ycbcr2rgb_coeff[0][0] << 18) |
705 (ycbcr2rgb_coeff[1][1] << 9) | ycbcr2rgb_coeff[2][2];
706 __raw_writel(param, base++);
707 /* scale = 2, sat = 0 */
708 param = (ycbcr2rgb_coeff[3][0] >> 5) | (2L << (40 - 32));
709 __raw_writel(param, base++);
710
711 param = (ycbcr2rgb_coeff[3][1] << 27) |
712 (ycbcr2rgb_coeff[0][1] << 18) |
713 (ycbcr2rgb_coeff[1][0] << 9) | ycbcr2rgb_coeff[2][0];
714 __raw_writel(param, base++);
715 param = (ycbcr2rgb_coeff[3][1] >> 5);
716 __raw_writel(param, base++);
717
718 param = (ycbcr2rgb_coeff[3][2] << 27) |
719 (ycbcr2rgb_coeff[0][2] << 18) |
720 (ycbcr2rgb_coeff[1][2] << 9) | ycbcr2rgb_coeff[2][1];
721 __raw_writel(param, base++);
722 param = (ycbcr2rgb_coeff[3][2] >> 5);
723 __raw_writel(param, base++);
724 } else if ((in_format == RGB) && (out_format == YCbCr)) {
725 /* Init CSC (RGB->YCbCr) */
726 param = (rgb2ycbcr_coeff[3][0] << 27) |
727 (rgb2ycbcr_coeff[0][0] << 18) |
728 (rgb2ycbcr_coeff[1][1] << 9) | rgb2ycbcr_coeff[2][2];
729 __raw_writel(param, base++);
730 /* scale = 1, sat = 0 */
731 param = (rgb2ycbcr_coeff[3][0] >> 5) | (1UL << 8);
732 __raw_writel(param, base++);
733
734 param = (rgb2ycbcr_coeff[3][1] << 27) |
735 (rgb2ycbcr_coeff[0][1] << 18) |
736 (rgb2ycbcr_coeff[1][0] << 9) | rgb2ycbcr_coeff[2][0];
737 __raw_writel(param, base++);
738 param = (rgb2ycbcr_coeff[3][1] >> 5);
739 __raw_writel(param, base++);
740
741 param = (rgb2ycbcr_coeff[3][2] << 27) |
742 (rgb2ycbcr_coeff[0][2] << 18) |
743 (rgb2ycbcr_coeff[1][2] << 9) | rgb2ycbcr_coeff[2][1];
744 __raw_writel(param, base++);
745 param = (rgb2ycbcr_coeff[3][2] >> 5);
746 __raw_writel(param, base++);
747 } else if ((in_format == RGB) && (out_format == RGB)) {
748 /* Init CSC */
749 param =
750 (rgb2rgb_coeff[3][0] << 27) | (rgb2rgb_coeff[0][0] << 18) |
751 (rgb2rgb_coeff[1][1] << 9) | rgb2rgb_coeff[2][2];
752 __raw_writel(param, base++);
753 /* scale = 2, sat = 0 */
754 param = (rgb2rgb_coeff[3][0] >> 5) | (2UL << 8);
755 __raw_writel(param, base++);
756
757 param =
758 (rgb2rgb_coeff[3][1] << 27) | (rgb2rgb_coeff[0][1] << 18) |
759 (rgb2rgb_coeff[1][0] << 9) | rgb2rgb_coeff[2][0];
760 __raw_writel(param, base++);
761 param = (rgb2rgb_coeff[3][1] >> 5);
762 __raw_writel(param, base++);
763
764 param =
765 (rgb2rgb_coeff[3][2] << 27) | (rgb2rgb_coeff[0][2] << 18) |
766 (rgb2rgb_coeff[1][2] << 9) | rgb2rgb_coeff[2][1];
767 __raw_writel(param, base++);
768 param = (rgb2rgb_coeff[3][2] >> 5);
769 __raw_writel(param, base++);
770 } else {
771 dev_err(g_ipu_dev, "Unsupported color space conversion/n");
772 }
773 }
774
这个函数设置 IPM(IC task parameter memory) 颜色转换寄存器，参见42.4.6.6
775 static bool _calc_resize_coeffs(uint32_t inSize, uint32_t outSize,
776 uint32_t *resizeCoeff,
777 uint32_t *downsizeCoeff)
778 {
779 uint32_t tempSize;
780 uint32_t tempDownsize;
781
782 /* Input size cannot be more than 4096 */
783 /* Output size cannot be more than 1024 */
784 if ((inSize > 4096) || (outSize > 1024))
785 return false;
786
787 /* Cannot downsize more than 8:1 */
788 if ((outSize << 3) < inSize)
789 return false;
790
791 /* Compute downsizing coefficient */
792 /* Output of downsizing unit cannot be more than 1024 */
793 tempDownsize = 0;
794 tempSize = inSize;
795 while (((tempSize > 1024) || (tempSize >= outSize * 2)) &&
796 (tempDownsize < 2)) {
797 tempSize >>= 1;
798 tempDownsize++;
799 }
800 *downsizeCoeff = tempDownsize;
801
802 /* compute resizing coefficient using the following equation:
803 resizeCoeff = M*(SI -1)/(SO - 1)
804 where M = 2^13, SI - input size, SO - output size */
805 *resizeCoeff = (8192L * (tempSize - 1)) / (outSize - 1);
806 if (*resizeCoeff >= 16384L) {
807 dev_err(g_ipu_dev, "Warning! Overflow on resize coeff./n");
808 *resizeCoeff = 0x3FFF;
809 }
810
811 dev_dbg(g_ipu_dev, "resizing from %u -> %u pixels, "
812 "downsize=%u, resize=%u.%lu (reg=%u)/n", inSize, outSize,
813 *downsizeCoeff, (*resizeCoeff >= 8192L) ? 1 : 0,
814 ((*resizeCoeff & 0x1FFF) * 10000L) / 8192L, *resizeCoeff);
815
816 return true;
817 }
这个函数计算resize 因子
输出两个值downsizeCoeff和resizeCoff，resize由这两个值共同组成，downsizeCoff是倍数部分，resizeCoff是小数部分
(kickxxx) |
