From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/media/v4l2-core/v4l2-dv-timings.c | 211 +++++++++++++++++------ 1 file changed, 162 insertions(+), 49 deletions(-) (limited to 'kernel/drivers/media/v4l2-core/v4l2-dv-timings.c') diff --git a/kernel/drivers/media/v4l2-core/v4l2-dv-timings.c b/kernel/drivers/media/v4l2-core/v4l2-dv-timings.c index c0e96382f..6a83d6191 100644 --- a/kernel/drivers/media/v4l2-core/v4l2-dv-timings.c +++ b/kernel/drivers/media/v4l2-core/v4l2-dv-timings.c @@ -25,6 +25,7 @@ #include #include #include +#include MODULE_AUTHOR("Hans Verkuil"); MODULE_DESCRIPTION("V4L2 DV Timings Helper Functions"); @@ -255,20 +256,25 @@ void v4l2_print_dv_timings(const char *dev_prefix, const char *prefix, { const struct v4l2_bt_timings *bt = &t->bt; u32 htot, vtot; + u32 fps; if (t->type != V4L2_DV_BT_656_1120) return; htot = V4L2_DV_BT_FRAME_WIDTH(bt); vtot = V4L2_DV_BT_FRAME_HEIGHT(bt); + if (bt->interlaced) + vtot /= 2; + + fps = (htot * vtot) > 0 ? div_u64((100 * (u64)bt->pixelclock), + (htot * vtot)) : 0; if (prefix == NULL) prefix = ""; - pr_info("%s: %s%ux%u%s%u (%ux%u)\n", dev_prefix, prefix, + pr_info("%s: %s%ux%u%s%u.%u (%ux%u)\n", dev_prefix, prefix, bt->width, bt->height, bt->interlaced ? "i" : "p", - (htot * vtot) > 0 ? ((u32)bt->pixelclock / (htot * vtot)) : 0, - htot, vtot); + fps / 100, fps % 100, htot, vtot); if (!detailed) return; @@ -281,10 +287,17 @@ void v4l2_print_dv_timings(const char *dev_prefix, const char *prefix, dev_prefix, bt->vfrontporch, (bt->polarities & V4L2_DV_VSYNC_POS_POL) ? "+" : "-", bt->vsync, bt->vbackporch); + if (bt->interlaced) + pr_info("%s: vertical bottom field: fp = %u, %ssync = %u, bp = %u\n", + dev_prefix, bt->il_vfrontporch, + (bt->polarities & V4L2_DV_VSYNC_POS_POL) ? "+" : "-", + bt->il_vsync, bt->il_vbackporch); pr_info("%s: pixelclock: %llu\n", dev_prefix, bt->pixelclock); - pr_info("%s: flags (0x%x):%s%s%s%s%s\n", dev_prefix, bt->flags, + pr_info("%s: flags (0x%x):%s%s%s%s%s%s\n", dev_prefix, bt->flags, (bt->flags & V4L2_DV_FL_REDUCED_BLANKING) ? " REDUCED_BLANKING" : "", + ((bt->flags & V4L2_DV_FL_REDUCED_BLANKING) && + bt->vsync == 8) ? " (V2)" : "", (bt->flags & V4L2_DV_FL_CAN_REDUCE_FPS) ? " CAN_REDUCE_FPS" : "", (bt->flags & V4L2_DV_FL_REDUCED_FPS) ? @@ -308,11 +321,13 @@ EXPORT_SYMBOL_GPL(v4l2_print_dv_timings); */ #define CVT_PXL_CLK_GRAN 250000 /* pixel clock granularity */ +#define CVT_PXL_CLK_GRAN_RB_V2 1000 /* granularity for reduced blanking v2*/ /* Normal blanking */ #define CVT_MIN_V_BPORCH 7 /* lines */ #define CVT_MIN_V_PORCH_RND 3 /* lines */ #define CVT_MIN_VSYNC_BP 550 /* min time of vsync + back porch (us) */ +#define CVT_HSYNC_PERCENT 8 /* nominal hsync as percentage of line */ /* Normal blanking for CVT uses GTF to calculate horizontal blanking */ #define CVT_CELL_GRAN 8 /* character cell granularity */ @@ -326,36 +341,46 @@ EXPORT_SYMBOL_GPL(v4l2_print_dv_timings); /* Reduced Blanking */ #define CVT_RB_MIN_V_BPORCH 7 /* lines */ #define CVT_RB_V_FPORCH 3 /* lines */ -#define CVT_RB_MIN_V_BLANK 460 /* us */ +#define CVT_RB_MIN_V_BLANK 460 /* us */ #define CVT_RB_H_SYNC 32 /* pixels */ -#define CVT_RB_H_BPORCH 80 /* pixels */ #define CVT_RB_H_BLANK 160 /* pixels */ +/* Reduce blanking Version 2 */ +#define CVT_RB_V2_H_BLANK 80 /* pixels */ +#define CVT_RB_MIN_V_FPORCH 3 /* lines */ +#define CVT_RB_V2_MIN_V_FPORCH 1 /* lines */ +#define CVT_RB_V_BPORCH 6 /* lines */ /** v4l2_detect_cvt - detect if the given timings follow the CVT standard * @frame_height - the total height of the frame (including blanking) in lines. * @hfreq - the horizontal frequency in Hz. * @vsync - the height of the vertical sync in lines. + * @active_width - active width of image (does not include blanking). This + * information is needed only in case of version 2 of reduced blanking. + * In other cases, this parameter does not have any effect on timings. * @polarities - the horizontal and vertical polarities (same as struct * v4l2_bt_timings polarities). + * @interlaced - if this flag is true, it indicates interlaced format * @fmt - the resulting timings. * * This function will attempt to detect if the given values correspond to a * valid CVT format. If so, then it will return true, and fmt will be filled * in with the found CVT timings. - * - * TODO: VESA defined a new version 2 of their reduced blanking - * formula. Support for that is currently missing in this CVT - * detection function. */ -bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync, - u32 polarities, struct v4l2_dv_timings *fmt) +bool v4l2_detect_cvt(unsigned frame_height, + unsigned hfreq, + unsigned vsync, + unsigned active_width, + u32 polarities, + bool interlaced, + struct v4l2_dv_timings *fmt) { int v_fp, v_bp, h_fp, h_bp, hsync; int frame_width, image_height, image_width; bool reduced_blanking; + bool rb_v2 = false; unsigned pix_clk; - if (vsync < 4 || vsync > 7) + if (vsync < 4 || vsync > 8) return false; if (polarities == V4L2_DV_VSYNC_POS_POL) @@ -365,22 +390,50 @@ bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync, else return false; + if (reduced_blanking && vsync == 8) + rb_v2 = true; + + if (rb_v2 && active_width == 0) + return false; + + if (!rb_v2 && vsync > 7) + return false; + + if (hfreq == 0) + return false; + /* Vertical */ if (reduced_blanking) { - v_fp = CVT_RB_V_FPORCH; - v_bp = (CVT_RB_MIN_V_BLANK * hfreq + 1999999) / 1000000; - v_bp -= vsync + v_fp; - - if (v_bp < CVT_RB_MIN_V_BPORCH) - v_bp = CVT_RB_MIN_V_BPORCH; + if (rb_v2) { + v_bp = CVT_RB_V_BPORCH; + v_fp = (CVT_RB_MIN_V_BLANK * hfreq) / 1000000 + 1; + v_fp -= vsync + v_bp; + + if (v_fp < CVT_RB_V2_MIN_V_FPORCH) + v_fp = CVT_RB_V2_MIN_V_FPORCH; + } else { + v_fp = CVT_RB_V_FPORCH; + v_bp = (CVT_RB_MIN_V_BLANK * hfreq) / 1000000 + 1; + v_bp -= vsync + v_fp; + + if (v_bp < CVT_RB_MIN_V_BPORCH) + v_bp = CVT_RB_MIN_V_BPORCH; + } } else { v_fp = CVT_MIN_V_PORCH_RND; - v_bp = (CVT_MIN_VSYNC_BP * hfreq + 1999999) / 1000000 - vsync; + v_bp = (CVT_MIN_VSYNC_BP * hfreq) / 1000000 + 1 - vsync; if (v_bp < CVT_MIN_V_BPORCH) v_bp = CVT_MIN_V_BPORCH; } - image_height = (frame_height - v_fp - vsync - v_bp + 1) & ~0x1; + + if (interlaced) + image_height = (frame_height - 2 * v_fp - 2 * vsync - 2 * v_bp) & ~0x1; + else + image_height = (frame_height - v_fp - vsync - v_bp + 1) & ~0x1; + + if (image_height < 0) + return false; /* Aspect ratio based on vsync */ switch (vsync) { @@ -402,22 +455,32 @@ bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync, else return false; break; + case 8: + image_width = active_width; + break; default: return false; } - image_width = image_width & ~7; + if (!rb_v2) + image_width = image_width & ~7; /* Horizontal */ if (reduced_blanking) { - pix_clk = (image_width + CVT_RB_H_BLANK) * hfreq; - pix_clk = (pix_clk / CVT_PXL_CLK_GRAN) * CVT_PXL_CLK_GRAN; + int h_blank; + int clk_gran; + + h_blank = rb_v2 ? CVT_RB_V2_H_BLANK : CVT_RB_H_BLANK; + clk_gran = rb_v2 ? CVT_PXL_CLK_GRAN_RB_V2 : CVT_PXL_CLK_GRAN; + + pix_clk = (image_width + h_blank) * hfreq; + pix_clk = (pix_clk / clk_gran) * clk_gran; - h_bp = CVT_RB_H_BPORCH; + h_bp = h_blank / 2; hsync = CVT_RB_H_SYNC; - h_fp = CVT_RB_H_BLANK - h_bp - hsync; + h_fp = h_blank - h_bp - hsync; - frame_width = image_width + CVT_RB_H_BLANK; + frame_width = image_width + h_blank; } else { unsigned ideal_duty_cycle_per_myriad = 100 * CVT_C_PRIME - (CVT_M_PRIME * 100000) / hfreq; @@ -436,8 +499,8 @@ bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync, h_bp = h_blank / 2; frame_width = image_width + h_blank; - hsync = (frame_width * 8 + 50) / 100; - hsync = hsync - hsync % CVT_CELL_GRAN; + hsync = frame_width * CVT_HSYNC_PERCENT / 100; + hsync = (hsync / CVT_CELL_GRAN) * CVT_CELL_GRAN; h_fp = h_blank - hsync - h_bp; } @@ -450,11 +513,27 @@ bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync, fmt->bt.hsync = hsync; fmt->bt.vsync = vsync; fmt->bt.hbackporch = frame_width - image_width - h_fp - hsync; - fmt->bt.vbackporch = frame_height - image_height - v_fp - vsync; + + if (!interlaced) { + fmt->bt.vbackporch = frame_height - image_height - v_fp - vsync; + fmt->bt.interlaced = V4L2_DV_PROGRESSIVE; + } else { + fmt->bt.vbackporch = (frame_height - image_height - 2 * v_fp - + 2 * vsync) / 2; + fmt->bt.il_vbackporch = frame_height - image_height - 2 * v_fp - + 2 * vsync - fmt->bt.vbackporch; + fmt->bt.il_vfrontporch = v_fp; + fmt->bt.il_vsync = vsync; + fmt->bt.flags |= V4L2_DV_FL_HALF_LINE; + fmt->bt.interlaced = V4L2_DV_INTERLACED; + } + fmt->bt.pixelclock = pix_clk; fmt->bt.standards = V4L2_DV_BT_STD_CVT; + if (reduced_blanking) fmt->bt.flags |= V4L2_DV_FL_REDUCED_BLANKING; + return true; } EXPORT_SYMBOL_GPL(v4l2_detect_cvt); @@ -493,6 +572,7 @@ EXPORT_SYMBOL_GPL(v4l2_detect_cvt); * @vsync - the height of the vertical sync in lines. * @polarities - the horizontal and vertical polarities (same as struct * v4l2_bt_timings polarities). + * @interlaced - if this flag is true, it indicates interlaced format * @aspect - preferred aspect ratio. GTF has no method of determining the * aspect ratio in order to derive the image width from the * image height, so it has to be passed explicitly. Usually @@ -508,6 +588,7 @@ bool v4l2_detect_gtf(unsigned frame_height, unsigned hfreq, unsigned vsync, u32 polarities, + bool interlaced, struct v4l2_fract aspect, struct v4l2_dv_timings *fmt) { @@ -527,10 +608,19 @@ bool v4l2_detect_gtf(unsigned frame_height, else return false; + if (hfreq == 0) + return false; + /* Vertical */ v_fp = GTF_V_FP; - v_bp = (GTF_MIN_VSYNC_BP * hfreq + 999999) / 1000000 - vsync; - image_height = (frame_height - v_fp - vsync - v_bp + 1) & ~0x1; + v_bp = (GTF_MIN_VSYNC_BP * hfreq + 500000) / 1000000 - vsync; + if (interlaced) + image_height = (frame_height - 2 * v_fp - 2 * vsync - 2 * v_bp) & ~0x1; + else + image_height = (frame_height - v_fp - vsync - v_bp + 1) & ~0x1; + + if (image_height < 0) + return false; if (aspect.numerator == 0 || aspect.denominator == 0) { aspect.numerator = 16; @@ -540,25 +630,35 @@ bool v4l2_detect_gtf(unsigned frame_height, image_width = (image_width + GTF_CELL_GRAN/2) & ~(GTF_CELL_GRAN - 1); /* Horizontal */ - if (default_gtf) - h_blank = ((image_width * GTF_D_C_PRIME * hfreq) - - (image_width * GTF_D_M_PRIME * 1000) + - (hfreq * (100 - GTF_D_C_PRIME) + GTF_D_M_PRIME * 1000) / 2) / - (hfreq * (100 - GTF_D_C_PRIME) + GTF_D_M_PRIME * 1000); - else - h_blank = ((image_width * GTF_S_C_PRIME * hfreq) - - (image_width * GTF_S_M_PRIME * 1000) + - (hfreq * (100 - GTF_S_C_PRIME) + GTF_S_M_PRIME * 1000) / 2) / - (hfreq * (100 - GTF_S_C_PRIME) + GTF_S_M_PRIME * 1000); + if (default_gtf) { + u64 num; + u32 den; + + num = ((image_width * GTF_D_C_PRIME * (u64)hfreq) - + ((u64)image_width * GTF_D_M_PRIME * 1000)); + den = (hfreq * (100 - GTF_D_C_PRIME) + GTF_D_M_PRIME * 1000) * + (2 * GTF_CELL_GRAN); + h_blank = div_u64((num + (den >> 1)), den); + h_blank *= (2 * GTF_CELL_GRAN); + } else { + u64 num; + u32 den; + + num = ((image_width * GTF_S_C_PRIME * (u64)hfreq) - + ((u64)image_width * GTF_S_M_PRIME * 1000)); + den = (hfreq * (100 - GTF_S_C_PRIME) + GTF_S_M_PRIME * 1000) * + (2 * GTF_CELL_GRAN); + h_blank = div_u64((num + (den >> 1)), den); + h_blank *= (2 * GTF_CELL_GRAN); + } - h_blank = h_blank - h_blank % (2 * GTF_CELL_GRAN); frame_width = image_width + h_blank; pix_clk = (image_width + h_blank) * hfreq; pix_clk = pix_clk / GTF_PXL_CLK_GRAN * GTF_PXL_CLK_GRAN; hsync = (frame_width * 8 + 50) / 100; - hsync = hsync - hsync % GTF_CELL_GRAN; + hsync = ((hsync + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN) * GTF_CELL_GRAN; h_fp = h_blank / 2 - hsync; @@ -571,11 +671,27 @@ bool v4l2_detect_gtf(unsigned frame_height, fmt->bt.hsync = hsync; fmt->bt.vsync = vsync; fmt->bt.hbackporch = frame_width - image_width - h_fp - hsync; - fmt->bt.vbackporch = frame_height - image_height - v_fp - vsync; + + if (!interlaced) { + fmt->bt.vbackporch = frame_height - image_height - v_fp - vsync; + fmt->bt.interlaced = V4L2_DV_PROGRESSIVE; + } else { + fmt->bt.vbackporch = (frame_height - image_height - 2 * v_fp - + 2 * vsync) / 2; + fmt->bt.il_vbackporch = frame_height - image_height - 2 * v_fp - + 2 * vsync - fmt->bt.vbackporch; + fmt->bt.il_vfrontporch = v_fp; + fmt->bt.il_vsync = vsync; + fmt->bt.flags |= V4L2_DV_FL_HALF_LINE; + fmt->bt.interlaced = V4L2_DV_INTERLACED; + } + fmt->bt.pixelclock = pix_clk; fmt->bt.standards = V4L2_DV_BT_STD_GTF; + if (!default_gtf) fmt->bt.flags |= V4L2_DV_FL_REDUCED_BLANKING; + return true; } EXPORT_SYMBOL_GPL(v4l2_detect_gtf); @@ -592,7 +708,6 @@ EXPORT_SYMBOL_GPL(v4l2_detect_gtf); struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait) { struct v4l2_fract aspect = { 16, 9 }; - u32 tmp; u8 ratio; /* Nothing filled in, fallback to 16:9 */ @@ -624,9 +739,7 @@ struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait) if (hor_landscape) return aspect; /* The aspect ratio is for portrait, so swap numerator and denominator */ - tmp = aspect.denominator; - aspect.denominator = aspect.numerator; - aspect.numerator = tmp; + swap(aspect.denominator, aspect.numerator); return aspect; } EXPORT_SYMBOL_GPL(v4l2_calc_aspect_ratio); -- cgit 1.2.3-korg