/* * Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd. * http://www.samsung.com * * Samsung EXYNOS5 SoC series G-Scaler driver * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation, either version 2 of the License, * or (at your option) any later version. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "gsc-core.h" #define GSC_CLOCK_GATE_NAME "gscl" static const struct gsc_fmt gsc_formats[] = { { .name = "RGB565", .pixelformat = V4L2_PIX_FMT_RGB565X, .depth = { 16 }, .color = GSC_RGB, .num_planes = 1, .num_comp = 1, }, { .name = "XRGB-8-8-8-8, 32 bpp", .pixelformat = V4L2_PIX_FMT_RGB32, .depth = { 32 }, .color = GSC_RGB, .num_planes = 1, .num_comp = 1, }, { .name = "YUV 4:2:2 packed, YCbYCr", .pixelformat = V4L2_PIX_FMT_YUYV, .depth = { 16 }, .color = GSC_YUV422, .yorder = GSC_LSB_Y, .corder = GSC_CBCR, .num_planes = 1, .num_comp = 1, .mbus_code = V4L2_MBUS_FMT_YUYV8_2X8, }, { .name = "YUV 4:2:2 packed, CbYCrY", .pixelformat = V4L2_PIX_FMT_UYVY, .depth = { 16 }, .color = GSC_YUV422, .yorder = GSC_LSB_C, .corder = GSC_CBCR, .num_planes = 1, .num_comp = 1, .mbus_code = V4L2_MBUS_FMT_UYVY8_2X8, }, { .name = "YUV 4:2:2 packed, CrYCbY", .pixelformat = V4L2_PIX_FMT_VYUY, .depth = { 16 }, .color = GSC_YUV422, .yorder = GSC_LSB_C, .corder = GSC_CRCB, .num_planes = 1, .num_comp = 1, .mbus_code = V4L2_MBUS_FMT_VYUY8_2X8, }, { .name = "YUV 4:2:2 packed, YCrYCb", .pixelformat = V4L2_PIX_FMT_YVYU, .depth = { 16 }, .color = GSC_YUV422, .yorder = GSC_LSB_Y, .corder = GSC_CRCB, .num_planes = 1, .num_comp = 1, .mbus_code = V4L2_MBUS_FMT_YVYU8_2X8, }, { .name = "YUV 4:4:4 planar, YCbYCr", .pixelformat = V4L2_PIX_FMT_YUV32, .depth = { 32 }, .color = GSC_YUV444, .yorder = GSC_LSB_Y, .corder = GSC_CBCR, .num_planes = 1, .num_comp = 1, }, { .name = "YUV 4:2:2 planar, Y/Cb/Cr", .pixelformat = V4L2_PIX_FMT_YUV422P, .depth = { 16 }, .color = GSC_YUV422, .yorder = GSC_LSB_Y, .corder = GSC_CBCR, .num_planes = 1, .num_comp = 3, }, { .name = "YUV 4:2:2 planar, Y/CbCr", .pixelformat = V4L2_PIX_FMT_NV16, .depth = { 16 }, .color = GSC_YUV422, .yorder = GSC_LSB_Y, .corder = GSC_CBCR, .num_planes = 1, .num_comp = 2, }, { .name = "YUV 4:2:2 planar, Y/CrCb", .pixelformat = V4L2_PIX_FMT_NV61, .depth = { 16 }, .color = GSC_YUV422, .yorder = GSC_LSB_Y, .corder = GSC_CRCB, .num_planes = 1, .num_comp = 2, }, { .name = "YUV 4:2:0 planar, YCbCr", .pixelformat = V4L2_PIX_FMT_YUV420, .depth = { 12 }, .color = GSC_YUV420, .yorder = GSC_LSB_Y, .corder = GSC_CBCR, .num_planes = 1, .num_comp = 3, }, { .name = "YUV 4:2:0 planar, YCrCb", .pixelformat = V4L2_PIX_FMT_YVU420, .depth = { 12 }, .color = GSC_YUV420, .yorder = GSC_LSB_Y, .corder = GSC_CRCB, .num_planes = 1, .num_comp = 3, }, { .name = "YUV 4:2:0 planar, Y/CbCr", .pixelformat = V4L2_PIX_FMT_NV12, .depth = { 12 }, .color = GSC_YUV420, .yorder = GSC_LSB_Y, .corder = GSC_CBCR, .num_planes = 1, .num_comp = 2, }, { .name = "YUV 4:2:0 planar, Y/CrCb", .pixelformat = V4L2_PIX_FMT_NV21, .depth = { 12 }, .color = GSC_YUV420, .yorder = GSC_LSB_Y, .corder = GSC_CRCB, .num_planes = 1, .num_comp = 2, }, { .name = "YUV 4:2:0 non-contig. 2p, Y/CbCr", .pixelformat = V4L2_PIX_FMT_NV12M, .depth = { 8, 4 }, .color = GSC_YUV420, .yorder = GSC_LSB_Y, .corder = GSC_CBCR, .num_planes = 2, .num_comp = 2, }, { .name = "YUV 4:2:0 non-contig. 3p, Y/Cb/Cr", .pixelformat = V4L2_PIX_FMT_YUV420M, .depth = { 8, 2, 2 }, .color = GSC_YUV420, .yorder = GSC_LSB_Y, .corder = GSC_CBCR, .num_planes = 3, .num_comp = 3, }, { .name = "YUV 4:2:0 non-contig. 3p, Y/Cr/Cb", .pixelformat = V4L2_PIX_FMT_YVU420M, .depth = { 8, 2, 2 }, .color = GSC_YUV420, .yorder = GSC_LSB_Y, .corder = GSC_CRCB, .num_planes = 3, .num_comp = 3, }, { .name = "YUV 4:2:0 n.c. 2p, Y/CbCr tiled", .pixelformat = V4L2_PIX_FMT_NV12MT_16X16, .depth = { 8, 4 }, .color = GSC_YUV420, .yorder = GSC_LSB_Y, .corder = GSC_CBCR, .num_planes = 2, .num_comp = 2, } }; const struct gsc_fmt *get_format(int index) { if (index >= ARRAY_SIZE(gsc_formats)) return NULL; return (struct gsc_fmt *)&gsc_formats[index]; } const struct gsc_fmt *find_fmt(u32 *pixelformat, u32 *mbus_code, u32 index) { const struct gsc_fmt *fmt, *def_fmt = NULL; unsigned int i; if (index >= ARRAY_SIZE(gsc_formats)) return NULL; for (i = 0; i < ARRAY_SIZE(gsc_formats); ++i) { fmt = get_format(i); if (pixelformat && fmt->pixelformat == *pixelformat) return fmt; if (mbus_code && fmt->mbus_code == *mbus_code) return fmt; if (index == i) def_fmt = fmt; } return def_fmt; } void gsc_set_frame_size(struct gsc_frame *frame, int width, int height) { frame->f_width = width; frame->f_height = height; frame->crop.width = width; frame->crop.height = height; frame->crop.left = 0; frame->crop.top = 0; } int gsc_cal_prescaler_ratio(struct gsc_variant *var, u32 src, u32 dst, u32 *ratio) { if ((dst > src) || (dst >= src / var->poly_sc_down_max)) { *ratio = 1; return 0; } if ((src / var->poly_sc_down_max / var->pre_sc_down_max) > dst) { pr_err("Exceeded maximum downscaling ratio (1/16))"); return -EINVAL; } *ratio = (dst > (src / 8)) ? 2 : 4; return 0; } void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *sh) { if (hratio == 4 && vratio == 4) *sh = 4; else if ((hratio == 4 && vratio == 2) || (hratio == 2 && vratio == 4)) *sh = 3; else if ((hratio == 4 && vratio == 1) || (hratio == 1 && vratio == 4) || (hratio == 2 && vratio == 2)) *sh = 2; else if (hratio == 1 && vratio == 1) *sh = 0; else *sh = 1; } void gsc_check_src_scale_info(struct gsc_variant *var, struct gsc_frame *s_frame, u32 *wratio, u32 tx, u32 ty, u32 *hratio) { int remainder = 0, walign, halign; if (is_yuv420(s_frame->fmt->color)) { walign = GSC_SC_ALIGN_4; halign = GSC_SC_ALIGN_4; } else if (is_yuv422(s_frame->fmt->color)) { walign = GSC_SC_ALIGN_4; halign = GSC_SC_ALIGN_2; } else { walign = GSC_SC_ALIGN_2; halign = GSC_SC_ALIGN_2; } remainder = s_frame->crop.width % (*wratio * walign); if (remainder) { s_frame->crop.width -= remainder; gsc_cal_prescaler_ratio(var, s_frame->crop.width, tx, wratio); pr_info("cropped src width size is recalculated from %d to %d", s_frame->crop.width + remainder, s_frame->crop.width); } remainder = s_frame->crop.height % (*hratio * halign); if (remainder) { s_frame->crop.height -= remainder; gsc_cal_prescaler_ratio(var, s_frame->crop.height, ty, hratio); pr_info("cropped src height size is recalculated from %d to %d", s_frame->crop.height + remainder, s_frame->crop.height); } } int gsc_enum_fmt_mplane(struct v4l2_fmtdesc *f) { const struct gsc_fmt *fmt; fmt = find_fmt(NULL, NULL, f->index); if (!fmt) return -EINVAL; strlcpy(f->description, fmt->name, sizeof(f->description)); f->pixelformat = fmt->pixelformat; return 0; } static u32 get_plane_info(struct gsc_frame *frm, u32 addr, u32 *index) { if (frm->addr.y == addr) { *index = 0; return frm->addr.y; } else if (frm->addr.cb == addr) { *index = 1; return frm->addr.cb; } else if (frm->addr.cr == addr) { *index = 2; return frm->addr.cr; } else { pr_err("Plane address is wrong"); return -EINVAL; } } void gsc_set_prefbuf(struct gsc_dev *gsc, struct gsc_frame *frm) { u32 f_chk_addr, f_chk_len, s_chk_addr, s_chk_len; f_chk_addr = f_chk_len = s_chk_addr = s_chk_len = 0; f_chk_addr = frm->addr.y; f_chk_len = frm->payload[0]; if (frm->fmt->num_planes == 2) { s_chk_addr = frm->addr.cb; s_chk_len = frm->payload[1]; } else if (frm->fmt->num_planes == 3) { u32 low_addr, low_plane, mid_addr, mid_plane; u32 high_addr, high_plane; u32 t_min, t_max; t_min = min3(frm->addr.y, frm->addr.cb, frm->addr.cr); low_addr = get_plane_info(frm, t_min, &low_plane); t_max = max3(frm->addr.y, frm->addr.cb, frm->addr.cr); high_addr = get_plane_info(frm, t_max, &high_plane); mid_plane = 3 - (low_plane + high_plane); if (mid_plane == 0) mid_addr = frm->addr.y; else if (mid_plane == 1) mid_addr = frm->addr.cb; else if (mid_plane == 2) mid_addr = frm->addr.cr; else return; f_chk_addr = low_addr; if (mid_addr + frm->payload[mid_plane] - low_addr > high_addr + frm->payload[high_plane] - mid_addr) { f_chk_len = frm->payload[low_plane]; s_chk_addr = mid_addr; s_chk_len = high_addr + frm->payload[high_plane] - mid_addr; } else { f_chk_len = mid_addr + frm->payload[mid_plane] - low_addr; s_chk_addr = high_addr; s_chk_len = frm->payload[high_plane]; } } pr_debug("f_addr = 0x%08x, f_len = %d, s_addr = 0x%08x, s_len = %d\n", f_chk_addr, f_chk_len, s_chk_addr, s_chk_len); } int gsc_try_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f) { struct gsc_dev *gsc = ctx->gsc_dev; struct gsc_variant *variant = gsc->variant; struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; const struct gsc_fmt *fmt; u32 max_w, max_h, mod_x, mod_y; u32 min_w, min_h, tmp_w, tmp_h; int i; pr_debug("user put w: %d, h: %d", pix_mp->width, pix_mp->height); fmt = find_fmt(&pix_mp->pixelformat, NULL, 0); if (!fmt) { pr_err("pixelformat format (0x%X) invalid\n", pix_mp->pixelformat); return -EINVAL; } if (pix_mp->field == V4L2_FIELD_ANY) pix_mp->field = V4L2_FIELD_NONE; else if (pix_mp->field != V4L2_FIELD_NONE) { pr_err("Not supported field order(%d)\n", pix_mp->field); return -EINVAL; } max_w = variant->pix_max->target_rot_dis_w; max_h = variant->pix_max->target_rot_dis_h; mod_x = ffs(variant->pix_align->org_w) - 1; if (is_yuv420(fmt->color)) mod_y = ffs(variant->pix_align->org_h) - 1; else mod_y = ffs(variant->pix_align->org_h) - 2; if (V4L2_TYPE_IS_OUTPUT(f->type)) { min_w = variant->pix_min->org_w; min_h = variant->pix_min->org_h; } else { min_w = variant->pix_min->target_rot_dis_w; min_h = variant->pix_min->target_rot_dis_h; } pr_debug("mod_x: %d, mod_y: %d, max_w: %d, max_h = %d", mod_x, mod_y, max_w, max_h); /* To check if image size is modified to adjust parameter against hardware abilities */ tmp_w = pix_mp->width; tmp_h = pix_mp->height; v4l_bound_align_image(&pix_mp->width, min_w, max_w, mod_x, &pix_mp->height, min_h, max_h, mod_y, 0); if (tmp_w != pix_mp->width || tmp_h != pix_mp->height) pr_info("Image size has been modified from %dx%d to %dx%d", tmp_w, tmp_h, pix_mp->width, pix_mp->height); pix_mp->num_planes = fmt->num_planes; if (pix_mp->width >= 1280) /* HD */ pix_mp->colorspace = V4L2_COLORSPACE_REC709; else /* SD */ pix_mp->colorspace = V4L2_COLORSPACE_SMPTE170M; for (i = 0; i < pix_mp->num_planes; ++i) { int bpl = (pix_mp->width * fmt->depth[i]) >> 3; pix_mp->plane_fmt[i].bytesperline = bpl; pix_mp->plane_fmt[i].sizeimage = bpl * pix_mp->height; pr_debug("[%d]: bpl: %d, sizeimage: %d", i, bpl, pix_mp->plane_fmt[i].sizeimage); } return 0; } int gsc_g_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f) { struct gsc_frame *frame; struct v4l2_pix_format_mplane *pix_mp; int i; frame = ctx_get_frame(ctx, f->type); if (IS_ERR(frame)) return PTR_ERR(frame); pix_mp = &f->fmt.pix_mp; pix_mp->width = frame->f_width; pix_mp->height = frame->f_height; pix_mp->field = V4L2_FIELD_NONE; pix_mp->pixelformat = frame->fmt->pixelformat; pix_mp->colorspace = V4L2_COLORSPACE_REC709; pix_mp->num_planes = frame->fmt->num_planes; for (i = 0; i < pix_mp->num_planes; ++i) { pix_mp->plane_fmt[i].bytesperline = (frame->f_width * frame->fmt->depth[i]) / 8; pix_mp->plane_fmt[i].sizeimage = pix_mp->plane_fmt[i].bytesperline * frame->f_height; } return 0; } void gsc_check_crop_change(u32 tmp_w, u32 tmp_h, u32 *w, u32 *h) { if (tmp_w != *w || tmp_h != *h) { pr_info("Cropped size has been modified from %dx%d to %dx%d", *w, *h, tmp_w, tmp_h); *w = tmp_w; *h = tmp_h; } } int gsc_g_crop(struct gsc_ctx *ctx, struct v4l2_crop *cr) { struct gsc_frame *frame; frame = ctx_get_frame(ctx, cr->type); if (IS_ERR(frame)) return PTR_ERR(frame); cr->c = frame->crop; return 0; } int gsc_try_crop(struct gsc_ctx *ctx, struct v4l2_crop *cr) { struct gsc_frame *f; struct gsc_dev *gsc = ctx->gsc_dev; struct gsc_variant *variant = gsc->variant; u32 mod_x = 0, mod_y = 0, tmp_w, tmp_h; u32 min_w, min_h, max_w, max_h; if (cr->c.top < 0 || cr->c.left < 0) { pr_err("doesn't support negative values for top & left\n"); return -EINVAL; } pr_debug("user put w: %d, h: %d", cr->c.width, cr->c.height); if (cr->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) f = &ctx->d_frame; else if (cr->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) f = &ctx->s_frame; else return -EINVAL; max_w = f->f_width; max_h = f->f_height; tmp_w = cr->c.width; tmp_h = cr->c.height; if (V4L2_TYPE_IS_OUTPUT(cr->type)) { if ((is_yuv422(f->fmt->color) && f->fmt->num_comp == 1) || is_rgb(f->fmt->color)) min_w = 32; else min_w = 64; if ((is_yuv422(f->fmt->color) && f->fmt->num_comp == 3) || is_yuv420(f->fmt->color)) min_h = 32; else min_h = 16; } else { if (is_yuv420(f->fmt->color) || is_yuv422(f->fmt->color)) mod_x = ffs(variant->pix_align->target_w) - 1; if (is_yuv420(f->fmt->color)) mod_y = ffs(variant->pix_align->target_h) - 1; if (ctx->gsc_ctrls.rotate->val == 90 || ctx->gsc_ctrls.rotate->val == 270) { max_w = f->f_height; max_h = f->f_width; min_w = variant->pix_min->target_rot_en_w; min_h = variant->pix_min->target_rot_en_h; tmp_w = cr->c.height; tmp_h = cr->c.width; } else { min_w = variant->pix_min->target_rot_dis_w; min_h = variant->pix_min->target_rot_dis_h; } } pr_debug("mod_x: %d, mod_y: %d, min_w: %d, min_h = %d", mod_x, mod_y, min_w, min_h); pr_debug("tmp_w : %d, tmp_h : %d", tmp_w, tmp_h); v4l_bound_align_image(&tmp_w, min_w, max_w, mod_x, &tmp_h, min_h, max_h, mod_y, 0); if (!V4L2_TYPE_IS_OUTPUT(cr->type) && (ctx->gsc_ctrls.rotate->val == 90 || ctx->gsc_ctrls.rotate->val == 270)) gsc_check_crop_change(tmp_h, tmp_w, &cr->c.width, &cr->c.height); else gsc_check_crop_change(tmp_w, tmp_h, &cr->c.width, &cr->c.height); /* adjust left/top if cropping rectangle is out of bounds */ /* Need to add code to algin left value with 2's multiple */ if (cr->c.left + tmp_w > max_w) cr->c.left = max_w - tmp_w; if (cr->c.top + tmp_h > max_h) cr->c.top = max_h - tmp_h; if ((is_yuv420(f->fmt->color) || is_yuv422(f->fmt->color)) && cr->c.left & 1) cr->c.left -= 1; pr_debug("Aligned l:%d, t:%d, w:%d, h:%d, f_w: %d, f_h: %d", cr->c.left, cr->c.top, cr->c.width, cr->c.height, max_w, max_h); return 0; } int gsc_check_scaler_ratio(struct gsc_variant *var, int sw, int sh, int dw, int dh, int rot, int out_path) { int tmp_w, tmp_h, sc_down_max; if (out_path == GSC_DMA) sc_down_max = var->sc_down_max; else sc_down_max = var->local_sc_down; if (rot == 90 || rot == 270) { tmp_w = dh; tmp_h = dw; } else { tmp_w = dw; tmp_h = dh; } if ((sw / tmp_w) > sc_down_max || (sh / tmp_h) > sc_down_max || (tmp_w / sw) > var->sc_up_max || (tmp_h / sh) > var->sc_up_max) return -EINVAL; return 0; } int gsc_set_scaler_info(struct gsc_ctx *ctx) { struct gsc_scaler *sc = &ctx->scaler; struct gsc_frame *s_frame = &ctx->s_frame; struct gsc_frame *d_frame = &ctx->d_frame; struct gsc_variant *variant = ctx->gsc_dev->variant; struct device *dev = &ctx->gsc_dev->pdev->dev; int tx, ty; int ret; ret = gsc_check_scaler_ratio(variant, s_frame->crop.width, s_frame->crop.height, d_frame->crop.width, d_frame->crop.height, ctx->gsc_ctrls.rotate->val, ctx->out_path); if (ret) { pr_err("out of scaler range"); return ret; } if (ctx->gsc_ctrls.rotate->val == 90 || ctx->gsc_ctrls.rotate->val == 270) { ty = d_frame->crop.width; tx = d_frame->crop.height; } else { tx = d_frame->crop.width; ty = d_frame->crop.height; } if (tx <= 0 || ty <= 0) { dev_err(dev, "Invalid target size: %dx%d", tx, ty); return -EINVAL; } ret = gsc_cal_prescaler_ratio(variant, s_frame->crop.width, tx, &sc->pre_hratio); if (ret) { pr_err("Horizontal scale ratio is out of range"); return ret; } ret = gsc_cal_prescaler_ratio(variant, s_frame->crop.height, ty, &sc->pre_vratio); if (ret) { pr_err("Vertical scale ratio is out of range"); return ret; } gsc_check_src_scale_info(variant, s_frame, &sc->pre_hratio, tx, ty, &sc->pre_vratio); gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio, &sc->pre_shfactor); sc->main_hratio = (s_frame->crop.width << 16) / tx; sc->main_vratio = (s_frame->crop.height << 16) / ty; pr_debug("scaler input/output size : sx = %d, sy = %d, tx = %d, ty = %d", s_frame->crop.width, s_frame->crop.height, tx, ty); pr_debug("scaler ratio info : pre_shfactor : %d, pre_h : %d", sc->pre_shfactor, sc->pre_hratio); pr_debug("pre_v :%d, main_h : %d, main_v : %d", sc->pre_vratio, sc->main_hratio, sc->main_vratio); return 0; } static int __gsc_s_ctrl(struct gsc_ctx *ctx, struct v4l2_ctrl *ctrl) { struct gsc_dev *gsc = ctx->gsc_dev; struct gsc_variant *variant = gsc->variant; unsigned int flags = GSC_DST_FMT | GSC_SRC_FMT; int ret = 0; if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) return 0; switch (ctrl->id) { case V4L2_CID_HFLIP: ctx->hflip = ctrl->val; break; case V4L2_CID_VFLIP: ctx->vflip = ctrl->val; break; case V4L2_CID_ROTATE: if ((ctx->state & flags) == flags) { ret = gsc_check_scaler_ratio(variant, ctx->s_frame.crop.width, ctx->s_frame.crop.height, ctx->d_frame.crop.width, ctx->d_frame.crop.height, ctx->gsc_ctrls.rotate->val, ctx->out_path); if (ret) return -EINVAL; } ctx->rotation = ctrl->val; break; case V4L2_CID_ALPHA_COMPONENT: ctx->d_frame.alpha = ctrl->val; break; } ctx->state |= GSC_PARAMS; return 0; } static int gsc_s_ctrl(struct v4l2_ctrl *ctrl) { struct gsc_ctx *ctx = ctrl_to_ctx(ctrl); unsigned long flags; int ret; spin_lock_irqsave(&ctx->gsc_dev->slock, flags); ret = __gsc_s_ctrl(ctx, ctrl); spin_unlock_irqrestore(&ctx->gsc_dev->slock, flags); return ret; } static const struct v4l2_ctrl_ops gsc_ctrl_ops = { .s_ctrl = gsc_s_ctrl, }; int gsc_ctrls_create(struct gsc_ctx *ctx) { if (ctx->ctrls_rdy) { pr_err("Control handler of this context was created already"); return 0; } v4l2_ctrl_handler_init(&ctx->ctrl_handler, GSC_MAX_CTRL_NUM); ctx->gsc_ctrls.rotate = v4l2_ctrl_new_std(&ctx->ctrl_handler, &gsc_ctrl_ops, V4L2_CID_ROTATE, 0, 270, 90, 0); ctx->gsc_ctrls.hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &gsc_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); ctx->gsc_ctrls.vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &gsc_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); ctx->gsc_ctrls.global_alpha = v4l2_ctrl_new_std(&ctx->ctrl_handler, &gsc_ctrl_ops, V4L2_CID_ALPHA_COMPONENT, 0, 255, 1, 0); ctx->ctrls_rdy = ctx->ctrl_handler.error == 0; if (ctx->ctrl_handler.error) { int err = ctx->ctrl_handler.error; v4l2_ctrl_handler_free(&ctx->ctrl_handler); pr_err("Failed to create G-Scaler control handlers"); return err; } return 0; } void gsc_ctrls_delete(struct gsc_ctx *ctx) { if (ctx->ctrls_rdy) { v4l2_ctrl_handler_free(&ctx->ctrl_handler); ctx->ctrls_rdy = false; } } /* The color format (num_comp, num_planes) must be already configured. */ int gsc_prepare_addr(struct gsc_ctx *ctx, struct vb2_buffer *vb, struct gsc_frame *frame, struct gsc_addr *addr) { int ret = 0; u32 pix_size; if ((vb == NULL) || (frame == NULL)) return -EINVAL; pix_size = frame->f_width * frame->f_height; pr_debug("num_planes= %d, num_comp= %d, pix_size= %d", frame->fmt->num_planes, frame->fmt->num_comp, pix_size); addr->y = vb2_dma_contig_plane_dma_addr(vb, 0); if (frame->fmt->num_planes == 1) { switch (frame->fmt->num_comp) { case 1: addr->cb = 0; addr->cr = 0; break; case 2: /* decompose Y into Y/Cb */ addr->cb = (dma_addr_t)(addr->y + pix_size); addr->cr = 0; break; case 3: /* decompose Y into Y/Cb/Cr */ addr->cb = (dma_addr_t)(addr->y + pix_size); if (GSC_YUV420 == frame->fmt->color) addr->cr = (dma_addr_t)(addr->cb + (pix_size >> 2)); else /* 422 */ addr->cr = (dma_addr_t)(addr->cb + (pix_size >> 1)); break; default: pr_err("Invalid the number of color planes"); return -EINVAL; } } else { if (frame->fmt->num_planes >= 2) addr->cb = vb2_dma_contig_plane_dma_addr(vb, 1); if (frame->fmt->num_planes == 3) addr->cr = vb2_dma_contig_plane_dma_addr(vb, 2); } if ((frame->fmt->pixelformat == V4L2_PIX_FMT_VYUY) || (frame->fmt->pixelformat == V4L2_PIX_FMT_YVYU) || (frame->fmt->pixelformat == V4L2_PIX_FMT_NV61) || (frame->fmt->pixelformat == V4L2_PIX_FMT_YVU420) || (frame->fmt->pixelformat == V4L2_PIX_FMT_NV21) || (frame->fmt->pixelformat == V4L2_PIX_FMT_YVU420M)) swap(addr->cb, addr->cr); pr_debug("ADDR: y= 0x%X cb= 0x%X cr= 0x%X ret= %d", addr->y, addr->cb, addr->cr, ret); return ret; } static irqreturn_t gsc_irq_handler(int irq, void *priv) { struct gsc_dev *gsc = priv; struct gsc_ctx *ctx; int gsc_irq; gsc_irq = gsc_hw_get_irq_status(gsc); gsc_hw_clear_irq(gsc, gsc_irq); if (gsc_irq == GSC_IRQ_OVERRUN) { pr_err("Local path input over-run interrupt has occurred!\n"); return IRQ_HANDLED; } spin_lock(&gsc->slock); if (test_and_clear_bit(ST_M2M_PEND, &gsc->state)) { gsc_hw_enable_control(gsc, false); if (test_and_clear_bit(ST_M2M_SUSPENDING, &gsc->state)) { set_bit(ST_M2M_SUSPENDED, &gsc->state); wake_up(&gsc->irq_queue); goto isr_unlock; } ctx = v4l2_m2m_get_curr_priv(gsc->m2m.m2m_dev); if (!ctx || !ctx->m2m_ctx) goto isr_unlock; spin_unlock(&gsc->slock); gsc_m2m_job_finish(ctx, VB2_BUF_STATE_DONE); /* wake_up job_abort, stop_streaming */ if (ctx->state & GSC_CTX_STOP_REQ) { ctx->state &= ~GSC_CTX_STOP_REQ; wake_up(&gsc->irq_queue); } return IRQ_HANDLED; } isr_unlock: spin_unlock(&gsc->slock); return IRQ_HANDLED; } static struct gsc_pix_max gsc_v_100_max = { .org_scaler_bypass_w = 8192, .org_scaler_bypass_h = 8192, .org_scaler_input_w = 4800, .org_scaler_input_h = 3344, .real_rot_dis_w = 4800, .real_rot_dis_h = 3344, .real_rot_en_w = 2047, .real_rot_en_h = 2047, .target_rot_dis_w = 4800, .target_rot_dis_h = 3344, .target_rot_en_w = 2016, .target_rot_en_h = 2016, }; static struct gsc_pix_min gsc_v_100_min = { .org_w = 64, .org_h = 32, .real_w = 64, .real_h = 32, .target_rot_dis_w = 64, .target_rot_dis_h = 32, .target_rot_en_w = 32, .target_rot_en_h = 16, }; static struct gsc_pix_align gsc_v_100_align = { .org_h = 16, .org_w = 16, /* yuv420 : 16, others : 8 */ .offset_h = 2, /* yuv420/422 : 2, others : 1 */ .real_w = 16, /* yuv420/422 : 4~16, others : 2~8 */ .real_h = 16, /* yuv420 : 4~16, others : 1 */ .target_w = 2, /* yuv420/422 : 2, others : 1 */ .target_h = 2, /* yuv420 : 2, others : 1 */ }; static struct gsc_variant gsc_v_100_variant = { .pix_max = &gsc_v_100_max, .pix_min = &gsc_v_100_min, .pix_align = &gsc_v_100_align, .in_buf_cnt = 32, .out_buf_cnt = 32, .sc_up_max = 8, .sc_down_max = 16, .poly_sc_down_max = 4, .pre_sc_down_max = 4, .local_sc_down = 2, }; static struct gsc_driverdata gsc_v_100_drvdata = { .variant = { [0] = &gsc_v_100_variant, [1] = &gsc_v_100_variant, [2] = &gsc_v_100_variant, [3] = &gsc_v_100_variant, }, .num_entities = 4, .lclk_frequency = 266000000UL, }; static struct platform_device_id gsc_driver_ids[] = { { .name = "exynos-gsc", .driver_data = (unsigned long)&gsc_v_100_drvdata, }, {}, }; MODULE_DEVICE_TABLE(platform, gsc_driver_ids); static const struct of_device_id exynos_gsc_match[] = { { .compatible = "samsung,exynos5-gsc", .data = &gsc_v_100_drvdata, }, {}, }; MODULE_DEVICE_TABLE(of, exynos_gsc_match); static void *gsc_get_drv_data(struct platform_device *pdev) { struct gsc_driverdata *driver_data = NULL; if (pdev->dev.of_node) { const struct of_device_id *match; match = of_match_node(of_match_ptr(exynos_gsc_match), pdev->dev.of_node); if (match) driver_data = (struct gsc_driverdata *)match->data; } else { driver_data = (struct gsc_driverdata *) platform_get_device_id(pdev)->driver_data; } return driver_data; } static void gsc_clk_put(struct gsc_dev *gsc) { if (!IS_ERR(gsc->clock)) clk_unprepare(gsc->clock); } static int gsc_clk_get(struct gsc_dev *gsc) { int ret; dev_dbg(&gsc->pdev->dev, "gsc_clk_get Called\n"); gsc->clock = devm_clk_get(&gsc->pdev->dev, GSC_CLOCK_GATE_NAME); if (IS_ERR(gsc->clock)) { dev_err(&gsc->pdev->dev, "failed to get clock~~~: %s\n", GSC_CLOCK_GATE_NAME); return PTR_ERR(gsc->clock); } ret = clk_prepare(gsc->clock); if (ret < 0) { dev_err(&gsc->pdev->dev, "clock prepare failed for clock: %s\n", GSC_CLOCK_GATE_NAME); gsc->clock = ERR_PTR(-EINVAL); return ret; } return 0; } static int gsc_m2m_suspend(struct gsc_dev *gsc) { unsigned long flags; int timeout; spin_lock_irqsave(&gsc->slock, flags); if (!gsc_m2m_pending(gsc)) { spin_unlock_irqrestore(&gsc->slock, flags); return 0; } clear_bit(ST_M2M_SUSPENDED, &gsc->state); set_bit(ST_M2M_SUSPENDING, &gsc->state); spin_unlock_irqrestore(&gsc->slock, flags); timeout = wait_event_timeout(gsc->irq_queue, test_bit(ST_M2M_SUSPENDED, &gsc->state), GSC_SHUTDOWN_TIMEOUT); clear_bit(ST_M2M_SUSPENDING, &gsc->state); return timeout == 0 ? -EAGAIN : 0; } static int gsc_m2m_resume(struct gsc_dev *gsc) { unsigned long flags; spin_lock_irqsave(&gsc->slock, flags); /* Clear for full H/W setup in first run after resume */ gsc->m2m.ctx = NULL; spin_unlock_irqrestore(&gsc->slock, flags); if (test_and_clear_bit(ST_M2M_SUSPENDED, &gsc->state)) gsc_m2m_job_finish(gsc->m2m.ctx, VB2_BUF_STATE_ERROR); return 0; } static int gsc_probe(struct platform_device *pdev) { struct gsc_dev *gsc; struct resource *res; struct gsc_driverdata *drv_data = gsc_get_drv_data(pdev); struct device *dev = &pdev->dev; int ret = 0; gsc = devm_kzalloc(dev, sizeof(struct gsc_dev), GFP_KERNEL); if (!gsc) return -ENOMEM; if (dev->of_node) gsc->id = of_alias_get_id(pdev->dev.of_node, "gsc"); else gsc->id = pdev->id; if (gsc->id < 0 || gsc->id >= drv_data->num_entities) { dev_err(dev, "Invalid platform device id: %d\n", gsc->id); return -EINVAL; } gsc->variant = drv_data->variant[gsc->id]; gsc->pdev = pdev; gsc->pdata = dev->platform_data; init_waitqueue_head(&gsc->irq_queue); spin_lock_init(&gsc->slock); mutex_init(&gsc->lock); gsc->clock = ERR_PTR(-EINVAL); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); gsc->regs = devm_request_and_ioremap(dev, res); if (!gsc->regs) { dev_err(dev, "failed to map registers\n"); return -ENOENT; } res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!res) { dev_err(dev, "failed to get IRQ resource\n"); return -ENXIO; } ret = gsc_clk_get(gsc); if (ret) return ret; ret = devm_request_irq(dev, res->start, gsc_irq_handler, 0, pdev->name, gsc); if (ret) { dev_err(dev, "failed to install irq (%d)\n", ret); goto err_clk; } ret = gsc_register_m2m_device(gsc); if (ret) goto err_clk; platform_set_drvdata(pdev, gsc); pm_runtime_enable(dev); ret = pm_runtime_get_sync(&pdev->dev); if (ret < 0) goto err_m2m; /* Initialize continious memory allocator */ gsc->alloc_ctx = vb2_dma_contig_init_ctx(dev); if (IS_ERR(gsc->alloc_ctx)) { ret = PTR_ERR(gsc->alloc_ctx); goto err_pm; } dev_dbg(dev, "gsc-%d registered successfully\n", gsc->id); pm_runtime_put(dev); return 0; err_pm: pm_runtime_put(dev); err_m2m: gsc_unregister_m2m_device(gsc); err_clk: gsc_clk_put(gsc); return ret; } static int gsc_remove(struct platform_device *pdev) { struct gsc_dev *gsc = platform_get_drvdata(pdev); gsc_unregister_m2m_device(gsc); vb2_dma_contig_cleanup_ctx(gsc->alloc_ctx); pm_runtime_disable(&pdev->dev); gsc_clk_put(gsc); dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name); return 0; } static int gsc_runtime_resume(struct device *dev) { struct gsc_dev *gsc = dev_get_drvdata(dev); int ret = 0; pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state); ret = clk_enable(gsc->clock); if (ret) return ret; gsc_hw_set_sw_reset(gsc); gsc_wait_reset(gsc); return gsc_m2m_resume(gsc); } static int gsc_runtime_suspend(struct device *dev) { struct gsc_dev *gsc = dev_get_drvdata(dev); int ret = 0; ret = gsc_m2m_suspend(gsc); if (!ret) clk_disable(gsc->clock); pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state); return ret; } static int gsc_resume(struct device *dev) { struct gsc_dev *gsc = dev_get_drvdata(dev); unsigned long flags; pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state); /* Do not resume if the device was idle before system suspend */ spin_lock_irqsave(&gsc->slock, flags); if (!test_and_clear_bit(ST_SUSPEND, &gsc->state) || !gsc_m2m_active(gsc)) { spin_unlock_irqrestore(&gsc->slock, flags); return 0; } gsc_hw_set_sw_reset(gsc); gsc_wait_reset(gsc); spin_unlock_irqrestore(&gsc->slock, flags); return gsc_m2m_resume(gsc); } static int gsc_suspend(struct device *dev) { struct gsc_dev *gsc = dev_get_drvdata(dev); pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state); if (test_and_set_bit(ST_SUSPEND, &gsc->state)) return 0; return gsc_m2m_suspend(gsc); } static const struct dev_pm_ops gsc_pm_ops = { .suspend = gsc_suspend, .resume = gsc_resume, .runtime_suspend = gsc_runtime_suspend, .runtime_resume = gsc_runtime_resume, }; static struct platform_driver gsc_driver = { .probe = gsc_probe, .remove = gsc_remove, .id_table = gsc_driver_ids, .driver = { .name = GSC_MODULE_NAME, .owner = THIS_MODULE, .pm = &gsc_pm_ops, .of_match_table = exynos_gsc_match, } }; module_platform_driver(gsc_driver); MODULE_AUTHOR("Hyunwong Kim "); MODULE_DESCRIPTION("Samsung EXYNOS5 Soc series G-Scaler driver"); MODULE_LICENSE("GPL");