This patch adds the core functionality for the M-Scaler driver. Signed-off-by: Shaik Ameer Basha <shaik.am...@samsung.com> --- drivers/media/platform/exynos-mscl/mscl-core.c | 1312 ++++++++++++++++++++++++ drivers/media/platform/exynos-mscl/mscl-core.h | 549 ++++++++++ 2 files changed, 1861 insertions(+) create mode 100644 drivers/media/platform/exynos-mscl/mscl-core.c create mode 100644 drivers/media/platform/exynos-mscl/mscl-core.h
diff --git a/drivers/media/platform/exynos-mscl/mscl-core.c b/drivers/media/platform/exynos-mscl/mscl-core.c new file mode 100644 index 0000000..4a3a851 --- /dev/null +++ b/drivers/media/platform/exynos-mscl/mscl-core.c @@ -0,0 +1,1312 @@ +/* + * Copyright (c) 2013 - 2014 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Samsung EXYNOS5 SoC series M-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 <linux/clk.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/pm_runtime.h> + +#ifdef CONFIG_EXYNOS_IOMMU +#include <asm/dma-iommu.h> +#endif + +#include "mscl-core.h" + +#define MSCL_CLOCK_GATE_NAME "mscl" + +static const struct mscl_fmt mscl_formats[] = { + { + .name = "YUV 4:2:0 non-contig. 2p, Y/CbCr", + .pixelformat = V4L2_PIX_FMT_NV12M, + .depth = { 8, 4 }, + .color = MSCL_YUV420, + .corder = MSCL_CBCR, + .num_planes = 2, + .num_comp = 2, + .mscl_color = MSCL_YUV420_2P_Y_UV, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + + }, { + .name = "YUV 4:2:0 contig. 2p, Y/CbCr", + .pixelformat = V4L2_PIX_FMT_NV12, + .depth = { 12 }, + .color = MSCL_YUV420, + .corder = MSCL_CBCR, + .num_planes = 1, + .num_comp = 2, + .mscl_color = MSCL_YUV420_2P_Y_UV, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:0 n.c. 2p, Y/CbCr tiled", + .pixelformat = V4L2_PIX_FMT_NV12MT_16X16, + .depth = { 8, 4 }, + .color = MSCL_YUV420, + .corder = MSCL_CBCR, + .num_planes = 2, + .num_comp = 2, + .mscl_color = MSCL_YUV420_2P_Y_UV, + .mscl_color_fmt_type = (MSCL_FMT_SRC), + .is_tiled = true, + }, { + .name = "YUV 4:2:2 contig. 2p, Y/CbCr", + .pixelformat = V4L2_PIX_FMT_NV16, + .depth = { 16 }, + .color = MSCL_YUV422, + .corder = MSCL_CBCR, + .num_planes = 1, + .num_comp = 2, + .mscl_color = MSCL_YUV422_2P_Y_UV, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:4:4 contig. 2p, Y/CbCr", + .pixelformat = V4L2_PIX_FMT_NV24, + .depth = { 24 }, + .color = MSCL_YUV444, + .corder = MSCL_CBCR, + .num_planes = 1, + .num_comp = 2, + .mscl_color = MSCL_YUV444_2P_Y_UV, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "RGB565", + .pixelformat = V4L2_PIX_FMT_RGB565X, + .depth = { 16 }, + .color = MSCL_RGB, + .num_planes = 1, + .num_comp = 1, + .mscl_color = MSCL_RGB565, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "XRGB-1555, 16 bpp", + .pixelformat = V4L2_PIX_FMT_RGB555, + .depth = { 16 }, + .color = MSCL_RGB, + .num_planes = 1, + .num_comp = 1, + .mscl_color = MSCL_ARGB1555, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "XRGB-8888, 32 bpp", + .pixelformat = V4L2_PIX_FMT_RGB32, + .depth = { 32 }, + .color = MSCL_RGB, + .num_planes = 1, + .num_comp = 1, + .mscl_color = MSCL_ARGB8888, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:2 packed, YCrYCb", + .pixelformat = V4L2_PIX_FMT_YVYU, + .depth = { 16 }, + .color = MSCL_YUV422, + .corder = MSCL_CRCB, + .num_planes = 1, + .num_comp = 1, + .mbus_code = V4L2_MBUS_FMT_YVYU8_2X8, + .mscl_color = MSCL_YUV422_1P_YVYU, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:2 packed, YCbYCr", + .pixelformat = V4L2_PIX_FMT_YUYV, + .depth = { 16 }, + .color = MSCL_YUV422, + .corder = MSCL_CBCR, + .num_planes = 1, + .num_comp = 1, + .mbus_code = V4L2_MBUS_FMT_YUYV8_2X8, + .mscl_color = MSCL_YUV422_1P_YUYV, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:2 packed, CbYCrY", + .pixelformat = V4L2_PIX_FMT_UYVY, + .depth = { 16 }, + .color = MSCL_YUV422, + .corder = MSCL_CBCR, + .num_planes = 1, + .num_comp = 1, + .mbus_code = V4L2_MBUS_FMT_UYVY8_2X8, + .mscl_color = MSCL_YUV422_1P_UYVY, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "XRGB-4444, 16 bpp", + .pixelformat = V4L2_PIX_FMT_RGB444, + .depth = { 16 }, + .color = MSCL_RGB, + .num_planes = 1, + .num_comp = 1, + .mscl_color = MSCL_ARGB4444, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:0 non-contig. 2p, Y/CrCb", + .pixelformat = V4L2_PIX_FMT_NV21M, + .depth = { 8, 4 }, + .color = MSCL_YUV420, + .corder = MSCL_CRCB, + .num_planes = 2, + .num_comp = 2, + .mscl_color = MSCL_YUV420_2P_Y_VU, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:0 contig. 2p, Y/CrCb", + .pixelformat = V4L2_PIX_FMT_NV21, + .depth = { 12 }, + .color = MSCL_YUV420, + .corder = MSCL_CRCB, + .num_planes = 1, + .num_comp = 2, + .mscl_color = MSCL_YUV420_2P_Y_VU, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:2 contig. 2p, Y/CrCb", + .pixelformat = V4L2_PIX_FMT_NV61, + .depth = { 16 }, + .color = MSCL_YUV422, + .corder = MSCL_CRCB, + .num_planes = 1, + .num_comp = 2, + .mscl_color = MSCL_YUV422_2P_Y_VU, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:4:4 contig. 2p, Y/CrCb", + .pixelformat = V4L2_PIX_FMT_NV42, + .depth = { 24 }, + .color = MSCL_YUV444, + .corder = MSCL_CRCB, + .num_planes = 1, + .num_comp = 2, + .mscl_color = MSCL_YUV444_2P_Y_VU, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:0 contig. 3p, YCbCr", + .pixelformat = V4L2_PIX_FMT_YUV420, + .depth = { 12 }, + .color = MSCL_YUV420, + .corder = MSCL_CBCR, + .num_planes = 1, + .num_comp = 3, + .mscl_color = MSCL_YUV420_3P_Y_U_V, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:0 contig. 3p, YCrCb", + .pixelformat = V4L2_PIX_FMT_YVU420, + .depth = { 12 }, + .color = MSCL_YUV420, + .corder = MSCL_CRCB, + .num_planes = 1, + .num_comp = 3, + .mscl_color = MSCL_YUV420_3P_Y_U_V, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:0 non-contig. 3p, Y/Cb/Cr", + .pixelformat = V4L2_PIX_FMT_YUV420M, + .depth = { 8, 2, 2 }, + .color = MSCL_YUV420, + .corder = MSCL_CBCR, + .num_planes = 3, + .num_comp = 3, + .mscl_color = MSCL_YUV420_3P_Y_U_V, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:0 non-contig. 3p, Y/Cr/Cb", + .pixelformat = V4L2_PIX_FMT_YVU420M, + .depth = { 8, 2, 2 }, + .color = MSCL_YUV420, + .corder = MSCL_CRCB, + .num_planes = 3, + .num_comp = 3, + .mscl_color = MSCL_YUV420_3P_Y_U_V, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, { + .name = "YUV 4:2:2 contig. 3p, Y/Cb/Cr", + .pixelformat = V4L2_PIX_FMT_YUV422P, + .depth = { 16 }, + .color = MSCL_YUV422, + .corder = MSCL_CBCR, + .num_planes = 1, + .num_comp = 3, + .mscl_color = MSCL_YUV422_3P_Y_U_V, + .mscl_color_fmt_type = (MSCL_FMT_SRC | MSCL_FMT_DST), + }, + + /* [TBD] support pixel formats, corresponds to these mscl_color formats + * MSCL_L8A8, MSCL_RGBA8888, MSCL_L8 etc + */ +}; + +const struct mscl_fmt *mscl_get_format(int index) +{ + if (index >= ARRAY_SIZE(mscl_formats)) + return NULL; + + return (struct mscl_fmt *)&mscl_formats[index]; +} + +const struct mscl_fmt *mscl_find_fmt(u32 *pixelformat, + u32 *mbus_code, u32 index) +{ + const struct mscl_fmt *fmt, *def_fmt = NULL; + unsigned int i; + + if (index >= ARRAY_SIZE(mscl_formats)) + return NULL; + + for (i = 0; i < ARRAY_SIZE(mscl_formats); ++i) { + fmt = mscl_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 mscl_set_frame_size(struct mscl_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 mscl_enum_fmt_mplane(struct v4l2_fmtdesc *f) +{ + const struct mscl_fmt *fmt; + + fmt = mscl_find_fmt(NULL, NULL, f->index); + if (!fmt) + return -EINVAL; + + /* input supports all mscl_formats but all mscl_formats are not + * supported for output. don't return the unsupported formats for output + */ + if (!(V4L2_TYPE_IS_OUTPUT(f->type) && + (fmt->mscl_color_fmt_type & MSCL_FMT_SRC))) + return -EINVAL; + + strlcpy(f->description, fmt->name, sizeof(f->description)); + f->pixelformat = fmt->pixelformat; + + return 0; +} + +static u32 get_plane_info(struct mscl_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_debug("Plane address is wrong"); + return -EINVAL; + } +} + +void mscl_set_prefbuf(struct mscl_dev *mscl, struct mscl_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]; + } + } + dev_dbg(&mscl->pdev->dev, + "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 mscl_try_fmt_mplane(struct mscl_ctx *ctx, struct v4l2_format *f) +{ + struct mscl_dev *mscl = ctx->mscl_dev; + struct device *dev = &mscl->pdev->dev; + struct mscl_variant *variant = mscl->variant; + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + const struct mscl_fmt *fmt; + u32 max_w, max_h, mod_w = 0, mod_h = 0; + u32 min_w, min_h, tmp_w, tmp_h; + int i; + struct mscl_frm_limit *frm_limit; + + dev_dbg(dev, "user put w: %d, h: %d", + pix_mp->width, pix_mp->height); + + fmt = mscl_find_fmt(&pix_mp->pixelformat, NULL, 0); + if (!fmt) { + dev_dbg(dev, "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) { + dev_dbg(dev, "Not supported field order(%d)\n", pix_mp->field); + return -EINVAL; + } + + if (V4L2_TYPE_IS_OUTPUT(f->type)) + frm_limit = variant->pix_out; + else + frm_limit = variant->pix_in; + + max_w = frm_limit->max_w; + max_h = frm_limit->max_h; + min_w = frm_limit->min_w; + min_h = frm_limit->min_h; + + /* Span has to be even number for YCbCr422-2p or YCbCr420 format */ + if (is_yuv422_2p(fmt) || is_yuv420(fmt)) + mod_w = 1; + + dev_dbg(dev, "mod_w: %d, mod_h: %d, max_w: %d, max_h = %d", + mod_w, mod_h, 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_w, + &pix_mp->height, min_h, max_h, mod_h, 0); + if (tmp_w != pix_mp->width || tmp_h != pix_mp->height) + dev_info(dev, + "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; + + /* nothing mentioned about the colorspace in m2m-scaler + * default value is set to V4L2_COLORSPACE_REC709 + */ + pix_mp->colorspace = V4L2_COLORSPACE_REC709; + + 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; + + dev_dbg(dev, "[%d]: bpl: %d, sizeimage: %d", + i, bpl, pix_mp->plane_fmt[i].sizeimage); + } + + return 0; +} + +int mscl_g_fmt_mplane(struct mscl_ctx *ctx, struct v4l2_format *f) +{ + struct mscl_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 mscl_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 mscl_g_crop(struct mscl_ctx *ctx, struct v4l2_crop *cr) +{ + struct mscl_frame *frame; + + frame = ctx_get_frame(ctx, cr->type); + if (IS_ERR(frame)) + return PTR_ERR(frame); + + cr->c = frame->crop; + + return 0; +} + +int mscl_try_crop(struct mscl_ctx *ctx, struct v4l2_crop *cr) +{ + struct mscl_frame *f; + const struct mscl_fmt *fmt; + struct mscl_dev *mscl = ctx->mscl_dev; + struct device *dev = &mscl->pdev->dev; + struct mscl_variant *variant = mscl->variant; + u32 mod_w = 0, mod_h = 0, tmp_w, tmp_h; + u32 min_w, min_h, max_w, max_h; + struct mscl_frm_limit *frm_limit; + + if (cr->c.top < 0 || cr->c.left < 0) { + dev_dbg(dev, "doesn't support negative values\n"); + return -EINVAL; + } + dev_dbg(dev, "user requested width: %d, height: %d", + cr->c.width, cr->c.height); + + f = ctx_get_frame(ctx, cr->type); + if (IS_ERR(f)) + return PTR_ERR(f); + + fmt = f->fmt; + tmp_w = cr->c.width; + tmp_h = cr->c.height; + + if (V4L2_TYPE_IS_OUTPUT(cr->type)) + frm_limit = variant->pix_out; + else + frm_limit = variant->pix_in; + + max_w = f->f_width; + max_h = f->f_height; + min_w = frm_limit->min_w; + min_h = frm_limit->min_h; + + if (V4L2_TYPE_IS_OUTPUT(cr->type)) { + if (is_yuv420(fmt)) { + mod_w = ffs(variant->pix_align->dst_w_420) - 1; + mod_h = ffs(variant->pix_align->dst_h_420) - 1; + } else if (is_yuv422(fmt)) { + mod_w = ffs(variant->pix_align->dst_w_422) - 1; + } + } else { + if (is_yuv420(fmt)) { + mod_w = ffs(variant->pix_align->src_w_420) - 1; + mod_h = ffs(variant->pix_align->src_h_420) - 1; + } else if (is_yuv422(fmt)) { + mod_w = ffs(variant->pix_align->src_w_422) - 1; + } + + if (ctx->ctrls_mscl.rotate->val == 90 || + ctx->ctrls_mscl.rotate->val == 270) { + max_w = f->f_height; + max_h = f->f_width; + tmp_w = cr->c.height; + tmp_h = cr->c.width; + } + } + + dev_dbg(dev, "mod_x: %d, mod_y: %d, min_w: %d, min_h = %d", + mod_w, mod_h, min_w, min_h); + dev_dbg(dev, "tmp_w : %d, tmp_h : %d", tmp_w, tmp_h); + + v4l_bound_align_image(&tmp_w, min_w, max_w, mod_w, + &tmp_h, min_h, max_h, mod_h, 0); + + if (!V4L2_TYPE_IS_OUTPUT(cr->type) && + (ctx->ctrls_mscl.rotate->val == 90 || + ctx->ctrls_mscl.rotate->val == 270)) + mscl_check_crop_change(tmp_h, tmp_w, + &cr->c.width, &cr->c.height); + else + mscl_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_yuv422_1p(fmt) && (cr->c.left & 1)) + cr->c.left -= 1; + + dev_dbg(dev, "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 mscl_check_scaler_ratio(struct mscl_variant *var, int sw, int sh, int dw, + int dh, int rot) +{ + if ((dw == 0) || (dh == 0)) + return -EINVAL; + + if (rot == 90 || rot == 270) + swap(dh, dw); + + pr_debug("sw: %d, sh: %d, dw: %d, dh: %d\n", sw, sh, dw, dh); + + if ((sw/dw) > var->scl_down_max || (sh/dh) > var->scl_down_max || + (dw/sw) > var->scl_up_max || (dh/sh) > var->scl_up_max) + return -EINVAL; + + return 0; +} + +int mscl_set_scaler_info(struct mscl_ctx *ctx) +{ + struct mscl_scaler *sc = &ctx->scaler; + struct mscl_frame *s_frame = &ctx->s_frame; + struct mscl_frame *d_frame = &ctx->d_frame; + struct mscl_variant *variant = ctx->mscl_dev->variant; + struct device *dev = &ctx->mscl_dev->pdev->dev; + int src_w, src_h, ret; + + ret = mscl_check_scaler_ratio(variant, + s_frame->crop.width, s_frame->crop.height, + d_frame->crop.width, d_frame->crop.height, + ctx->ctrls_mscl.rotate->val); + if (ret) { + dev_dbg(dev, "out of scaler range\n"); + return ret; + } + + if (ctx->ctrls_mscl.rotate->val == 90 || + ctx->ctrls_mscl.rotate->val == 270) { + src_w = s_frame->crop.height; + src_h = s_frame->crop.width; + } else { + src_w = s_frame->crop.width; + src_h = s_frame->crop.height; + } + + sc->hratio = (src_w << 16) / d_frame->crop.width; + sc->vratio = (src_h << 16) / d_frame->crop.height; + + dev_dbg(dev, "scaler settings::\n" + "sx = %d, sy = %d, sw = %d, sh = %d\n" + "dx = %d, dy = %d, dw = %d, dh = %d\n" + "h-ratio : %d, v-ratio: %d\n", + s_frame->crop.left, s_frame->crop.top, + s_frame->crop.width, s_frame->crop.height, + d_frame->crop.left, d_frame->crop.top, + d_frame->crop.width, s_frame->crop.height, + sc->hratio, sc->vratio); + + return 0; +} + +static int __mscl_s_ctrl(struct mscl_ctx *ctx, struct v4l2_ctrl *ctrl) +{ + struct mscl_dev *mscl = ctx->mscl_dev; + struct mscl_variant *variant = mscl->variant; + unsigned int flags = MSCL_DST_FMT | MSCL_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 = mscl_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->ctrls_mscl.rotate->val); + + if (ret) + return -EINVAL; + } + + ctx->rotation = ctrl->val; + break; + + case V4L2_CID_ALPHA_COMPONENT: + ctx->d_frame.alpha = ctrl->val; + break; + } + + ctx->state |= MSCL_PARAMS; + return 0; +} + +static int mscl_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct mscl_ctx *ctx = ctrl_to_ctx(ctrl); + unsigned long flags; + int ret; + + spin_lock_irqsave(&ctx->mscl_dev->slock, flags); + ret = __mscl_s_ctrl(ctx, ctrl); + spin_unlock_irqrestore(&ctx->mscl_dev->slock, flags); + + return ret; +} + +static const struct v4l2_ctrl_ops mscl_ctrl_ops = { + .s_ctrl = mscl_s_ctrl, +}; + +int mscl_ctrls_create(struct mscl_ctx *ctx) +{ + struct device *dev = &ctx->mscl_dev->pdev->dev; + + if (ctx->ctrls_rdy) { + dev_dbg(dev, "Control handler of this ctx was created already"); + return 0; + } + + v4l2_ctrl_handler_init(&ctx->ctrl_handler, MSCL_MAX_CTRL_NUM); + + ctx->ctrls_mscl.rotate = v4l2_ctrl_new_std(&ctx->ctrl_handler, + &mscl_ctrl_ops, V4L2_CID_ROTATE, 0, 270, 90, 0); + ctx->ctrls_mscl.hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, + &mscl_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); + ctx->ctrls_mscl.vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, + &mscl_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); + ctx->ctrls_mscl.global_alpha = v4l2_ctrl_new_std(&ctx->ctrl_handler, + &mscl_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); + dev_dbg(dev, "Failed to create M-Scaler control handlers"); + return err; + } + + return 0; +} + +void mscl_ctrls_delete(struct mscl_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 mscl_prepare_addr(struct mscl_ctx *ctx, struct vb2_buffer *vb, + struct mscl_frame *frame, struct mscl_addr *addr) +{ + struct device *dev = &ctx->mscl_dev->pdev->dev; + int ret = 0; + u32 pix_size; + + if ((vb == NULL) || (frame == NULL)) + return -EINVAL; + + pix_size = frame->f_width * frame->f_height; + + dev_dbg(dev, "planes= %d, comp= %d, pix_size= %d, fmt = %d\n", + frame->fmt->num_planes, frame->fmt->num_comp, + pix_size, frame->fmt->mscl_color); + + 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 (MSCL_YUV420 == frame->fmt->color) + addr->cr = (dma_addr_t)(addr->cb + + (pix_size >> 2)); + else if (MSCL_YUV422 == frame->fmt->color) + addr->cr = (dma_addr_t)(addr->cb + + (pix_size >> 1)); + else /* 444 */ + addr->cr = (dma_addr_t)(addr->cb + pix_size); + break; + default: + dev_dbg(dev, "Invalid number of color planes\n"); + 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->corder == MSCL_CRCB) && (frame->fmt->num_planes == 3)) + swap(addr->cb, addr->cr); + + if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) + dev_dbg(dev, "\nIN:ADDR: y= 0x%X cb= 0x%X cr= 0x%X ret= %d\n", + addr->y, addr->cb, addr->cr, ret); + else + dev_dbg(dev, "\nOUT:ADDR: y= 0x%X cb= 0x%X cr= 0x%X ret= %d\n", + addr->y, addr->cb, addr->cr, ret); + + return ret; +} + +static void mscl_sw_reset(struct mscl_dev *mscl) +{ + mscl_hw_set_sw_reset(mscl); + mscl_wait_reset(mscl); + + mscl->coeff_type = MSCL_CSC_COEFF_NONE; +} + +static void mscl_check_for_illegal_status(struct device *dev, + unsigned int irq_status) +{ + if (irq_status & MSCL_INT_STATUS_TIMEOUT) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_TIMEOUT\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_BLEND) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_BLEND\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_RATIO) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_RATIO\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_DST_HEIGHT) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_DST_HEIGHT\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_DST_WIDTH) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_DST_WIDTH\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_DST_V_POS) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_DST_V_POS\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_DST_H_POS) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_DST_H_POS\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_DST_C_SPAN) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_DST_C_SPAN\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_DST_Y_SPAN) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_DST_Y_SPAN\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_DST_CR_BASE) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_DST_CR_BASE\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_DST_CB_BASE) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_DST_CB_BASE\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_DST_Y_BASE) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_DST_Y_BASE\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_DST_COLOR) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_DST_COLOR\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_HEIGHT) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_HEIGHT\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_WIDTH) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_WIDTH\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_CV_POS) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_CV_POS\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_CH_POS) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_CH_POS\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_YV_POS) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_YV_POS\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_YH_POS) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_YH_POS\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_C_SPAN) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_C_SPAN\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_Y_SPAN) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_Y_SPAN\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_CR_BASE) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_CR_BASE\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_CB_BASE) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_CB_BASE\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_Y_BASE) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_Y_BASE\n"); + if (irq_status & MSCL_INT_STATUS_ILLEGAL_SRC_COLOR) + dev_err(dev, "ERROR:: MSCL_INT_STATUS_ILLEGAL_SRC_COLOR\n"); +} + +static irqreturn_t mscl_irq_handler(int irq, void *priv) +{ + struct mscl_dev *mscl = priv; + struct mscl_ctx *ctx; + unsigned int mscl_irq; + struct device *dev = &mscl->pdev->dev; + + mscl_irq = mscl_hw_get_irq_status(mscl); + dev_dbg(dev, "irq_status: 0x%x\n", mscl_irq); + mscl_hw_clear_irq(mscl, mscl_irq); + + if (mscl_irq & MSCL_INT_STATUS_ERROR) + mscl_check_for_illegal_status(dev, mscl_irq); + + if (!(mscl_irq & MSCL_INT_EN_FRAME_END)) + return IRQ_HANDLED; + + spin_lock(&mscl->slock); + + if (test_and_clear_bit(ST_M2M_PEND, &mscl->state)) { + + mscl_hw_enable_control(mscl, false); + + if (test_and_clear_bit(ST_M2M_SUSPENDING, &mscl->state)) { + set_bit(ST_M2M_SUSPENDED, &mscl->state); + wake_up(&mscl->irq_queue); + goto isr_unlock; + } + ctx = v4l2_m2m_get_curr_priv(mscl->m2m.m2m_dev); + + if (!ctx || !ctx->m2m_ctx) + goto isr_unlock; + + spin_unlock(&mscl->slock); + mscl_m2m_job_finish(ctx, VB2_BUF_STATE_DONE); + + /* wake_up job_abort, stop_streaming */ + if (ctx->state & MSCL_CTX_STOP_REQ) { + ctx->state &= ~MSCL_CTX_STOP_REQ; + wake_up(&mscl->irq_queue); + } + return IRQ_HANDLED; + } + +isr_unlock: + spin_unlock(&mscl->slock); + return IRQ_HANDLED; +} + +static struct mscl_frm_limit mscl_inp_frm_limit = { + .min_w = 16, + .min_h = 16, + .max_w = 8192, + .max_h = 8192, +}; + +static struct mscl_frm_limit mscl_out_frm_limit = { + .min_w = 4, + .min_h = 4, + .max_w = 8192, + .max_h = 8192, +}; + +static struct mscl_pix_align mscl_align_v0 = { + .src_w_420 = 2, + .src_w_422 = 2, + .src_h_420 = 2, + .dst_w_420 = 2, + .dst_w_422 = 2, + .dst_h_420 = 2, +}; + + +static struct mscl_variant mscl_variant0 = { + .pix_in = &mscl_inp_frm_limit, + .pix_out = &mscl_out_frm_limit, + .pix_align = &mscl_align_v0, + .scl_up_max = 16, + .scl_down_max = 4, + .in_buf_cnt = 32, + .out_buf_cnt = 32, +}; + +static struct mscl_driverdata mscl_drvdata = { + .variant = { + [0] = &mscl_variant0, + [1] = &mscl_variant0, + [2] = &mscl_variant0, + }, + .num_entities = 3, + .lclk_frequency = 266000000UL, +}; + +static struct platform_device_id mscl_driver_ids[] = { + { + .name = "exynos-mscl", + .driver_data = (unsigned long)&mscl_drvdata, + }, + {}, +}; +MODULE_DEVICE_TABLE(platform, mscl_driver_ids); + +static const struct of_device_id exynos_mscl_match[] = { + { + .compatible = "samsung,exynos5-mscl", + .data = &mscl_drvdata, + }, + {}, +}; +MODULE_DEVICE_TABLE(of, exynos_mscl_match); + +static void *mscl_get_drv_data(struct platform_device *pdev) +{ + struct mscl_driverdata *driver_data = NULL; + + if (pdev->dev.of_node) { + const struct of_device_id *match; + match = of_match_node(of_match_ptr(exynos_mscl_match), + pdev->dev.of_node); + if (match) + driver_data = (struct mscl_driverdata *)match->data; + } + + return driver_data; +} + +static void mscl_clk_put(struct mscl_dev *mscl) +{ + if (!IS_ERR(mscl->clock)) + clk_unprepare(mscl->clock); +} + +static int mscl_clk_get(struct mscl_dev *mscl) +{ + int ret; + + dev_dbg(&mscl->pdev->dev, "mscl_clk_get Called\n"); + + mscl->clock = devm_clk_get(&mscl->pdev->dev, MSCL_CLOCK_GATE_NAME); + if (IS_ERR(mscl->clock)) { + dev_err(&mscl->pdev->dev, "failed to get clock~~~: %s\n", + MSCL_CLOCK_GATE_NAME); + return PTR_ERR(mscl->clock); + } + + ret = clk_prepare(mscl->clock); + if (ret < 0) { + dev_err(&mscl->pdev->dev, "clock prepare fail for clock: %s\n", + MSCL_CLOCK_GATE_NAME); + mscl->clock = ERR_PTR(-EINVAL); + return ret; + } + + return 0; +} + +static int mscl_m2m_suspend(struct mscl_dev *mscl) +{ + unsigned long flags; + int timeout; + + spin_lock_irqsave(&mscl->slock, flags); + if (!mscl_m2m_pending(mscl)) { + spin_unlock_irqrestore(&mscl->slock, flags); + return 0; + } + clear_bit(ST_M2M_SUSPENDED, &mscl->state); + set_bit(ST_M2M_SUSPENDING, &mscl->state); + spin_unlock_irqrestore(&mscl->slock, flags); + + timeout = wait_event_timeout(mscl->irq_queue, + test_bit(ST_M2M_SUSPENDED, &mscl->state), + MSCL_SHUTDOWN_TIMEOUT); + + clear_bit(ST_M2M_SUSPENDING, &mscl->state); + return timeout == 0 ? -EAGAIN : 0; +} + +static int mscl_m2m_resume(struct mscl_dev *mscl) +{ + unsigned long flags; + + spin_lock_irqsave(&mscl->slock, flags); + /* Clear for full H/W setup in first run after resume */ + mscl->m2m.ctx = NULL; + spin_unlock_irqrestore(&mscl->slock, flags); + + if (test_and_clear_bit(ST_M2M_SUSPENDED, &mscl->state)) + mscl_m2m_job_finish(mscl->m2m.ctx, + VB2_BUF_STATE_ERROR); + return 0; +} + +#ifdef CONFIG_EXYNOS_IOMMU +static int mscl_iommu_init(struct mscl_dev *mscl) +{ + struct dma_iommu_mapping *mapping; + struct device *dev = &mscl->pdev->dev; + + mapping = arm_iommu_create_mapping(&platform_bus_type, 0x20000000, + SZ_256M, 4); + if (mapping == NULL) { + dev_err(dev, "IOMMU mapping failed for MSCL\n"); + return -EFAULT; + } + + dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms), + GFP_KERNEL); + dma_set_max_seg_size(dev, 0xffffffffu); + arm_iommu_attach_device(dev, mapping); + + mscl->mapping = mapping; + + return 0; +} + +static void mscl_iommu_deinit(struct mscl_dev *mscl) +{ + if (mscl->mapping) + arm_iommu_release_mapping(mscl->mapping); + + mscl->mapping = NULL; +} + +#else +static int mscl_iommu_init(struct mscl_dev *mscl) +{ + return 0; +} + +static void mscl_iommu_deinit(struct mscl_dev *mscl) +{ + return; +} +#endif + +static int mscl_probe(struct platform_device *pdev) +{ + struct mscl_dev *mscl; + struct resource *res; + struct mscl_driverdata *drv_data = mscl_get_drv_data(pdev); + struct device *dev = &pdev->dev; + int ret = 0; + + if (!dev->of_node) { + dev_err(dev, "Invalid device node\n"); + return -EINVAL; + } + + mscl = devm_kzalloc(dev, sizeof(struct mscl_dev), GFP_KERNEL); + if (!mscl) + return -ENOMEM; + + mscl->id = of_alias_get_id(pdev->dev.of_node, "mscl"); + if (mscl->id < 0 || mscl->id >= drv_data->num_entities) { + dev_err(dev, "Invalid platform device id: %d\n", mscl->id); + return -EINVAL; + } + + mscl->variant = drv_data->variant[mscl->id]; + mscl->pdev = pdev; + mscl->pdata = dev->platform_data; + + init_waitqueue_head(&mscl->irq_queue); + spin_lock_init(&mscl->slock); + mutex_init(&mscl->lock); + mscl->clock = ERR_PTR(-EINVAL); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + mscl->regs = devm_request_and_ioremap(dev, res); + if (!mscl->regs) + return -ENODEV; + + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res) { + dev_err(dev, "failed to get IRQ resource\n"); + return -ENXIO; + } + + ret = mscl_clk_get(mscl); + if (ret) + return ret; + + if (mscl_iommu_init(mscl)) { + dev_err(&pdev->dev, "IOMMU Initialization failed\n"); + return -EINVAL; + } + + ret = devm_request_irq(dev, res->start, mscl_irq_handler, + 0, pdev->name, mscl); + if (ret) { + dev_err(dev, "failed to install irq (%d)\n", ret); + goto err_clk; + } + + ret = mscl_register_m2m_device(mscl); + if (ret) + goto err_clk; + + platform_set_drvdata(pdev, mscl); + pm_runtime_enable(dev); + ret = pm_runtime_get_sync(&pdev->dev); + if (ret < 0) + goto err_m2m; + + /* Initialize continious memory allocator */ + mscl->alloc_ctx = vb2_dma_contig_init_ctx(dev); + if (IS_ERR(mscl->alloc_ctx)) { + ret = PTR_ERR(mscl->alloc_ctx); + goto err_pm; + } + + dev_err(dev, "mscl-%d registered successfully\n", mscl->id); + + pm_runtime_put(dev); + return 0; +err_pm: + pm_runtime_put(dev); +err_m2m: + mscl_unregister_m2m_device(mscl); +err_clk: + mscl_iommu_deinit(mscl); + mscl_clk_put(mscl); + return ret; +} + +static int mscl_remove(struct platform_device *pdev) +{ + struct mscl_dev *mscl = platform_get_drvdata(pdev); + + mscl_unregister_m2m_device(mscl); + + vb2_dma_contig_cleanup_ctx(mscl->alloc_ctx); + pm_runtime_disable(&pdev->dev); + mscl_iommu_deinit(mscl); + mscl_clk_put(mscl); + + dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name); + return 0; +} + +static int mscl_runtime_resume(struct device *dev) +{ + struct mscl_dev *mscl = dev_get_drvdata(dev); + int ret = 0; + + dev_dbg(dev, "mscl%d: state: 0x%lx", mscl->id, mscl->state); + + ret = clk_enable(mscl->clock); + if (ret) + return ret; + + mscl_sw_reset(mscl); + + return mscl_m2m_resume(mscl); +} + +static int mscl_runtime_suspend(struct device *dev) +{ + struct mscl_dev *mscl = dev_get_drvdata(dev); + int ret = 0; + + ret = mscl_m2m_suspend(mscl); + if (!ret) + clk_disable(mscl->clock); + + dev_dbg(dev, "mscl%d: state: 0x%lx", mscl->id, mscl->state); + return ret; +} + +static int mscl_resume(struct device *dev) +{ + struct mscl_dev *mscl = dev_get_drvdata(dev); + unsigned long flags; + + dev_dbg(dev, "mscl%d: state: 0x%lx", mscl->id, mscl->state); + + /* Do not resume if the device was idle before system suspend */ + spin_lock_irqsave(&mscl->slock, flags); + if (!test_and_clear_bit(ST_SUSPEND, &mscl->state) || + !mscl_m2m_active(mscl)) { + spin_unlock_irqrestore(&mscl->slock, flags); + return 0; + } + + mscl_sw_reset(mscl); + spin_unlock_irqrestore(&mscl->slock, flags); + + return mscl_m2m_resume(mscl); +} + +static int mscl_suspend(struct device *dev) +{ + struct mscl_dev *mscl = dev_get_drvdata(dev); + + dev_dbg(dev, "mscl%d: state: 0x%lx", mscl->id, mscl->state); + + if (test_and_set_bit(ST_SUSPEND, &mscl->state)) + return 0; + + return mscl_m2m_suspend(mscl); +} + +static const struct dev_pm_ops mscl_pm_ops = { + .suspend = mscl_suspend, + .resume = mscl_resume, + .runtime_suspend = mscl_runtime_suspend, + .runtime_resume = mscl_runtime_resume, +}; + +static struct platform_driver mscl_driver = { + .probe = mscl_probe, + .remove = mscl_remove, + .id_table = mscl_driver_ids, + .driver = { + .name = MSCL_MODULE_NAME, + .owner = THIS_MODULE, + .pm = &mscl_pm_ops, + .of_match_table = exynos_mscl_match, + } +}; + +module_platform_driver(mscl_driver); + +MODULE_AUTHOR("Shaik Ameer Basha <shaik.am...@samsung.com>"); +MODULE_DESCRIPTION("Samsung EXYNOS5 Soc series M-Scaler driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/platform/exynos-mscl/mscl-core.h b/drivers/media/platform/exynos-mscl/mscl-core.h new file mode 100644 index 0000000..09149a2 --- /dev/null +++ b/drivers/media/platform/exynos-mscl/mscl-core.h @@ -0,0 +1,549 @@ +/* + * Copyright (c) 2013 - 2014 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * header file for Samsung EXYNOS5 SoC series M-Scaler driver + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef MSCL_CORE_H_ +#define MSCL_CORE_H_ + +#include <linux/device.h> +#include <linux/platform_device.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-mem2mem.h> +#include <media/videobuf2-dma-contig.h> + +#include "mscl-regs.h" + +#define CONFIG_VB2_MSCL_DMA_CONTIG 1 +#define MSCL_MODULE_NAME "exynos-mscl" + +#define MSCL_SHUTDOWN_TIMEOUT ((100*HZ)/1000) +#define MSCL_MAX_DEVS 4 +#define MSCL_MAX_CTRL_NUM 10 +#define MSCL_SC_ALIGN_4 4 +#define MSCL_SC_ALIGN_2 2 +#define DEFAULT_CSC_EQ 1 +#define DEFAULT_CSC_RANGE 1 + +#define MSCL_PARAMS (1 << 0) +#define MSCL_SRC_FMT (1 << 1) +#define MSCL_DST_FMT (1 << 2) +#define MSCL_CTX_M2M (1 << 3) +#define MSCL_CTX_STOP_REQ (1 << 4) + +enum mscl_dev_flags { + /* for global */ + ST_SUSPEND, + + /* for m2m node */ + ST_M2M_OPEN, + ST_M2M_RUN, + ST_M2M_PEND, + ST_M2M_SUSPENDED, + ST_M2M_SUSPENDING, +}; + +enum mscl_irq { + MSCL_INT_FRAME_END = 0, + MSCL_INT_ILLEGAL_SRC_COLOR, + MSCL_INT_ILLEGAL_SRC_Y_BASE, + MSCL_INT_ILLEGAL_SRC_CB_BASE, + MSCL_INT_ILLEGAL_SRC_CR_BASE, + MSCL_INT_ILLEGAL_SRC_Y_SPAN, + MSCL_INT_ILLEGAL_SRC_C_SPAN, + MSCL_INT_ILLEGAL_SRC_YH_POS, + MSCL_INT_ILLEGAL_SRC_YV_POS, + MSCL_INT_ILLEGAL_SRC_CH_POS, + MSCL_INT_ILLEGAL_SRC_CV_POS, + MSCL_INT_ILLEGAL_SRC_WIDTH, + MSCL_INT_ILLEGAL_SRC_HEIGHT, + MSCL_INT_ILLEGAL_DST_COLOR, + MSCL_INT_ILLEGAL_DST_Y_BASE, + MSCL_INT_ILLEGAL_DST_CB_BASE, + MSCL_INT_ILLEGAL_DST_CR_BASE, + MSCL_INT_ILLEGAL_DST_Y_SPAN, + MSCL_INT_ILLEGAL_DST_C_SPAN, + MSCL_INT_ILLEGAL_DST_H_POS, + MSCL_INT_ILLEGAL_DST_V_POS, + MSCL_INT_ILLEGAL_DST_WIDTH, + MSCL_INT_ILLEGAL_DST_HEIGHT, + MSCL_INT_ILLEGAL_RATIO, + MSCL_INT_ILLEGAL_BLEND, + MSCL_INT_TIMEOUT, +}; + +enum mscl_color_fmt { + MSCL_RGB = (0x1 << 0), + MSCL_YUV420 = (0x1 << 1), + MSCL_YUV422 = (0x1 << 2), + MSCL_YUV444 = (0x1 << 3), +}; + +enum mscl_yuv_fmt { + MSCL_CBCR = 0x10, + MSCL_CRCB, +}; + +enum mscl_clr_fmt_type { + MSCL_FMT_SRC = (0x1 << 0), + MSCL_FMT_DST = (0x1 << 1), +}; + +enum mscl_clr_fmt { + MSCL_YUV420_2P_Y_UV = 0, + MSCL_YUV422_2P_Y_UV = 2, + MSCL_YUV444_2P_Y_UV, + MSCL_RGB565, + MSCL_ARGB1555, + MSCL_ARGB8888, + MSCL_PREMULTIPLIED_ARGB8888, + MSCL_YUV422_1P_YVYU = 9, + MSCL_YUV422_1P_YUYV, + MSCL_YUV422_1P_UYVY, + MSCL_ARGB4444, + MSCL_L8A8, + MSCL_RGBA8888, + MSCL_L8, + MSCL_YUV420_2P_Y_VU, + MSCL_YUV422_2P_Y_VU = 18, + MSCL_YUV444_2P_Y_VU, + MSCL_YUV420_3P_Y_U_V, + MSCL_YUV422_3P_Y_U_V = 22, + MSCL_YUV444_3P_Y_U_V, +}; + +#define fh_to_ctx(__fh) container_of(__fh, struct mscl_ctx, fh) +#define is_rgb(fmt) (!!(((fmt)->color) & MSCL_RGB)) +#define is_yuv(fmt) ((fmt->color >= MSCL_YUV420) && (fmt->color <= MSCL_YUV444)) +#define is_yuv420(fmt) (!!((fmt->color) & MSCL_YUV420)) +#define is_yuv422(fmt) (!!((fmt->color) & MSCL_YUV422)) +#define is_yuv422_1p(fmt) (is_yuv422(fmt) && (fmt->num_planes == 1)) +#define is_yuv420_2p(fmt) (is_yuv420(fmt) && (fmt->num_planes == 2)) +#define is_yuv422_2p(fmt) (is_yuv422(fmt) && (fmt->num_planes == 2)) +#define is_yuv42x_2p(fmt) (is_yuv420_2p(fmt) || is_yuv422_2p(fmt)) +#define is_src_fmt(fmt) ((fmt->mscl_color_fmt_type) & MSCL_FMT_SRC) +#define is_dst_fmt(fmt) ((fmt->mscl_color_fmt_type) & MSCL_FMT_DST) + +#define mscl_m2m_active(dev) test_bit(ST_M2M_RUN, &(dev)->state) +#define mscl_m2m_pending(dev) test_bit(ST_M2M_PEND, &(dev)->state) +#define mscl_m2m_opened(dev) test_bit(ST_M2M_OPEN, &(dev)->state) + +#define ctrl_to_ctx(__ctrl) \ + container_of((__ctrl)->handler, struct mscl_ctx, ctrl_handler) +/** + * struct mscl_fmt - the driver's internal color format data + * @mbus_code: Media Bus pixel code, -1 if not applicable + * @mscl_color: M-Scaler color format + * @mscl_color_fmt_type: specifies whether src/dst format + * @is_tiled: tiled format or not + * @name: format description + * @pixelformat: the fourcc code for this format, 0 if not applicable + * @corder: Chrominance order control + * @num_planes: number of physically non-contiguous data planes + * @num_comp: number of physically contiguous data planes + * @depth: per plane driver's private 'number of bits per pixel' + * @flags: flags indicating which operation mode format applies to + */ +struct mscl_fmt { + enum v4l2_mbus_pixelcode mbus_code; + enum mscl_clr_fmt mscl_color; + enum mscl_clr_fmt_type mscl_color_fmt_type; + u32 is_tiled; + char *name; + u32 pixelformat; + u32 color; + u32 corder; + u16 num_planes; + u16 num_comp; + u8 depth[VIDEO_MAX_PLANES]; + u32 flags; +}; + +/** + * struct mscl_input_buf - the driver's video buffer + * @vb: videobuf2 buffer + * @list : linked list structure for buffer queue + * @idx : index of M-Scaler input buffer + */ +struct mscl_input_buf { + struct vb2_buffer vb; + struct list_head list; + int idx; +}; + +/** + * struct mscl_addr - the M-Scaler physical address set + * @y: luminance plane address + * @cb: Cb plane address + * @cr: Cr plane address + */ +struct mscl_addr { + dma_addr_t y; + dma_addr_t cb; + dma_addr_t cr; +}; + +/* struct mscl_ctrls - the M-Scaler control set + * @rotate: rotation degree + * @hflip: horizontal flip + * @vflip: vertical flip + * @global_alpha: the alpha value of current frame + */ +struct mscl_ctrls { + struct v4l2_ctrl *rotate; + struct v4l2_ctrl *hflip; + struct v4l2_ctrl *vflip; + struct v4l2_ctrl *global_alpha; +}; + +/* struct mscl_csc_info - color space conversion information + * + */ +enum mscl_csc_coeff { + MSCL_CSC_COEFF_YCBCR_TO_RGB, + MSCL_CSC_COEFF_YCBCR_TO_RGB_OFF16, + MSCL_CSC_COEFF_RGB_TO_YCBCR, + MSCL_CSC_COEFF_RGB_TO_YCBCR_OFF16, + MSCL_CSC_COEFF_MAX, + MSCL_CSC_COEFF_NONE, +}; + +struct mscl_csc_info { + enum mscl_csc_coeff coeff_type; +}; + +/** + * struct mscl_scaler - the configuration data for M-Scaler inetrnal scaler + * @hratio: the main scaler's horizontal ratio + * @vratio: the main scaler's vertical ratio + */ +struct mscl_scaler { + u32 hratio; + u32 vratio; +}; + +struct mscl_dev; + +struct mscl_ctx; + +/** + * struct mscl_frame - source/target frame properties + * @f_width: SRC : SRCIMG_WIDTH, DST : OUTPUTDMA_WHOLE_IMG_WIDTH + * @f_height: SRC : SRCIMG_HEIGHT, DST : OUTPUTDMA_WHOLE_IMG_HEIGHT + * @crop: cropped(source)/scaled(destination) size + * @payload: image size in bytes (w x h x bpp) + * @addr: image frame buffer physical addresses + * @fmt: M-Scaler color format pointer + * @colorspace: value indicating v4l2_colorspace + * @alpha: frame's alpha value + */ +struct mscl_frame { + u32 f_width; + u32 f_height; + struct v4l2_rect crop; + unsigned long payload[VIDEO_MAX_PLANES]; + struct mscl_addr addr; + const struct mscl_fmt *fmt; + u32 colorspace; + u8 alpha; +}; + +/** + * struct mscl_m2m_device - v4l2 memory-to-memory device data + * @vfd: the video device node for v4l2 m2m mode + * @m2m_dev: v4l2 memory-to-memory device data + * @ctx: hardware context data + * @refcnt: the reference counter + */ +struct mscl_m2m_device { + struct video_device *vfd; + struct v4l2_m2m_dev *m2m_dev; + struct mscl_ctx *ctx; + int refcnt; +}; + +/** + * struct mscl_pix_input - image pixel size limits for input frame + * + */ +struct mscl_frm_limit { + u16 min_w; + u16 min_h; + u16 max_w; + u16 max_h; + +}; + +struct mscl_pix_align { + u16 src_w_420; + u16 src_w_422; + u16 src_h_420; + u16 dst_w_420; + u16 dst_w_422; + u16 dst_h_420; +}; + +/** + * struct mscl_variant - M-Scaler variant information + */ +struct mscl_variant { + struct mscl_frm_limit *pix_in; + struct mscl_frm_limit *pix_out; + struct mscl_pix_align *pix_align; + u16 scl_up_max; + u16 scl_down_max; + u16 in_buf_cnt; + u16 out_buf_cnt; +}; + +/** + * struct mscl_driverdata - per device type driver data for init time. + * + * @variant: the variant information for this driver. + * @lclk_frequency: M-Scaler clock frequency + * @num_entities: the number of g-scalers + */ +struct mscl_driverdata { + struct mscl_variant *variant[MSCL_MAX_DEVS]; + unsigned long lclk_frequency; + int num_entities; +}; + +/** + * struct mscl_dev - abstraction for M-Scaler entity + * @slock: the spinlock protecting this data structure + * @lock: the mutex protecting this data structure + * @pdev: pointer to the M-Scaler platform device + * @variant: the IP variant information + * @id: M-Scaler device index (0..MSCL_MAX_DEVS) + * @clock: clocks required for M-Scaler operation + * @regs: the mapped hardware registers + * @irq_queue: interrupt handler waitqueue + * @m2m: memory-to-memory V4L2 device information + * @state: flags used to synchronize m2m and capture mode operation + * @alloc_ctx: videobuf2 memory allocator context + * @vdev: video device for M-Scaler instance + */ +struct mscl_dev { + spinlock_t slock; + struct mutex lock; + struct platform_device *pdev; + struct mscl_variant *variant; + u16 id; + struct clk *clock; + void __iomem *regs; + wait_queue_head_t irq_queue; + struct mscl_m2m_device m2m; + struct exynos_platform_msclaler *pdata; + unsigned long state; + struct vb2_alloc_ctx *alloc_ctx; + struct video_device vdev; + enum mscl_csc_coeff coeff_type; +#ifdef CONFIG_EXYNOS_IOMMU + struct dma_iommu_mapping *mapping; +#endif +}; + +/** + * mscl_ctx - the device context data + * @s_frame: source frame properties + * @d_frame: destination frame properties + * @scaler: image scaler properties + * @flags: additional flags for image conversion + * @state: flags to keep track of user configuration + * @mscl_dev: the M-Scaler device this context applies to + * @m2m_ctx: memory-to-memory device context + * @fh: v4l2 file handle + * @ctrl_handler: v4l2 controls handler + * @ctrls_mscl: M-Scaler control set + * @ctrls_rdy: true if the control handler is initialized + */ +struct mscl_ctx { + struct mscl_frame s_frame; + struct mscl_frame d_frame; + struct mscl_scaler scaler; + u32 flags; + u32 state; + int rotation; + unsigned int hflip:1; + unsigned int vflip:1; + struct mscl_dev *mscl_dev; + struct v4l2_m2m_ctx *m2m_ctx; + struct v4l2_fh fh; + struct v4l2_ctrl_handler ctrl_handler; + struct mscl_ctrls ctrls_mscl; + bool ctrls_rdy; +}; + +void mscl_set_prefbuf(struct mscl_dev *mscl, struct mscl_frame *frm); +int mscl_register_m2m_device(struct mscl_dev *mscl); +void mscl_unregister_m2m_device(struct mscl_dev *mscl); +void mscl_m2m_job_finish(struct mscl_ctx *ctx, int vb_state); + +u32 get_plane_size(struct mscl_frame *fr, unsigned int plane); +const struct mscl_fmt *mscl_get_format(int index); +const struct mscl_fmt *mscl_find_fmt(u32 *pixelformat, + u32 *mbus_code, u32 index); +int mscl_enum_fmt_mplane(struct v4l2_fmtdesc *f); +int mscl_try_fmt_mplane(struct mscl_ctx *ctx, struct v4l2_format *f); +void mscl_set_frame_size(struct mscl_frame *frame, int width, int height); +int mscl_g_fmt_mplane(struct mscl_ctx *ctx, struct v4l2_format *f); +void mscl_check_crop_change(u32 tmp_w, u32 tmp_h, u32 *w, u32 *h); +int mscl_g_crop(struct mscl_ctx *ctx, struct v4l2_crop *cr); +int mscl_try_crop(struct mscl_ctx *ctx, struct v4l2_crop *cr); +int mscl_cal_prescaler_ratio(struct mscl_variant *var, u32 src, u32 dst, + u32 *ratio); +void mscl_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *sh); +void mscl_check_src_scale_info(struct mscl_variant *var, + struct mscl_frame *s_frame, + u32 *wratio, u32 tx, u32 ty, u32 *hratio); +int mscl_check_scaler_ratio(struct mscl_variant *var, int sw, int sh, int dw, + int dh, int rot); +int mscl_set_scaler_info(struct mscl_ctx *ctx); +int mscl_ctrls_create(struct mscl_ctx *ctx); +void mscl_ctrls_delete(struct mscl_ctx *ctx); +int mscl_prepare_addr(struct mscl_ctx *ctx, struct vb2_buffer *vb, + struct mscl_frame *frame, struct mscl_addr *addr); + +static inline void mscl_ctx_state_lock_set(u32 state, struct mscl_ctx *ctx) +{ + unsigned long flags; + + spin_lock_irqsave(&ctx->mscl_dev->slock, flags); + ctx->state |= state; + spin_unlock_irqrestore(&ctx->mscl_dev->slock, flags); +} + +static inline void mscl_ctx_state_lock_clear(u32 state, struct mscl_ctx *ctx) +{ + unsigned long flags; + + spin_lock_irqsave(&ctx->mscl_dev->slock, flags); + ctx->state &= ~state; + spin_unlock_irqrestore(&ctx->mscl_dev->slock, flags); +} + +static inline int is_tiled(const struct mscl_fmt *fmt) +{ + return fmt->pixelformat == V4L2_PIX_FMT_NV12MT_16X16; +} + +static inline void mscl_hw_src_y_offset_en(struct mscl_dev *dev, bool on) +{ + u32 cfg; + + cfg = readl(dev->regs + MSCL_CFG); + if (on) + cfg |= MSCL_CFG_CSC_Y_OFFSET_SRC_EN; + else + cfg &= ~MSCL_CFG_CSC_Y_OFFSET_SRC_EN; + + writel(cfg, dev->regs + MSCL_CFG); +} + +static inline void mscl_hw_dst_y_offset_en(struct mscl_dev *dev, bool on) +{ + u32 cfg; + + cfg = readl(dev->regs + MSCL_CFG); + if (on) + cfg |= MSCL_CFG_CSC_Y_OFFSET_DST_EN; + else + cfg &= ~MSCL_CFG_CSC_Y_OFFSET_DST_EN; + + writel(cfg, dev->regs + MSCL_CFG); +} + +static inline void mscl_hw_enable_control(struct mscl_dev *dev, bool on) +{ + u32 cfg; + + if (on) + writel(0xFFFFFFFF, dev->regs + MSCL_INT_EN); + + cfg = readl(dev->regs + MSCL_CFG); + cfg |= MSCL_CFG_16_BURST_MODE; + if (on) + cfg |= MSCL_CFG_START_CMD; + else + cfg &= ~MSCL_CFG_START_CMD; + + dev_dbg(&dev->pdev->dev, + "mscl_hw_enable_control: MSCL_CFG:0x%x\n", cfg); + + writel(cfg, dev->regs + MSCL_CFG); +} + +static inline unsigned int mscl_hw_get_irq_status(struct mscl_dev *dev) +{ + return readl(dev->regs + MSCL_INT_STATUS); +} + +static inline void mscl_hw_clear_irq(struct mscl_dev *dev, unsigned int irq) +{ + writel(irq, dev->regs + MSCL_INT_STATUS); +} + +static inline void mscl_lock(struct vb2_queue *vq) +{ + struct mscl_ctx *ctx = vb2_get_drv_priv(vq); + mutex_lock(&ctx->mscl_dev->lock); +} + +static inline void mscl_unlock(struct vb2_queue *vq) +{ + struct mscl_ctx *ctx = vb2_get_drv_priv(vq); + mutex_unlock(&ctx->mscl_dev->lock); +} + +static inline bool mscl_ctx_state_is_set(u32 mask, struct mscl_ctx *ctx) +{ + unsigned long flags; + bool ret; + + spin_lock_irqsave(&ctx->mscl_dev->slock, flags); + ret = (ctx->state & mask) == mask; + spin_unlock_irqrestore(&ctx->mscl_dev->slock, flags); + return ret; +} + +static inline struct mscl_frame *ctx_get_frame(struct mscl_ctx *ctx, + enum v4l2_buf_type type) +{ + struct mscl_frame *frame; + + if (V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE == type) { + frame = &ctx->s_frame; + } else if (V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE == type) { + frame = &ctx->d_frame; + } else { + dev_dbg(&ctx->mscl_dev->pdev->dev, + "Wrong buffer/video queue type (%d)", type); + return ERR_PTR(-EINVAL); + } + + return frame; +} + +void mscl_hw_set_sw_reset(struct mscl_dev *dev); +int mscl_wait_reset(struct mscl_dev *dev); +void mscl_hw_set_irq_mask(struct mscl_dev *dev, int interrupt, bool mask); +void mscl_hw_set_input_addr(struct mscl_dev *dev, struct mscl_addr *addr); +void mscl_hw_set_output_addr(struct mscl_dev *dev, struct mscl_addr *addr); +void mscl_hw_set_in_size(struct mscl_ctx *ctx); +void mscl_hw_set_in_image_format(struct mscl_ctx *ctx); +void mscl_hw_set_out_size(struct mscl_ctx *ctx); +void mscl_hw_set_out_image_format(struct mscl_ctx *ctx); +void mscl_hw_set_scaler_ratio(struct mscl_ctx *ctx); +void mscl_hw_set_rotation(struct mscl_ctx *ctx); +void mscl_hw_address_queue_reset(struct mscl_ctx *ctx); +void mscl_hw_set_csc_coeff(struct mscl_ctx *ctx); + +#endif /* MSCL_CORE_H_ */ -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
