/* * S5P camera interface (video postprocessor) driver * * Copyright (c) 2010 Samsung Electronics * * Sylwester Nawrocki, <s.nawrocki@samsung.com> * * 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/module.h> #include <linux/kernel.h> #include <linux/version.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/bug.h> #include <linux/interrupt.h> #include <linux/device.h> #include <linux/platform_device.h> #include <linux/list.h> #include <linux/io.h> #include <linux/slab.h> #include <linux/clk.h> #include <media/v4l2-ioctl.h> #include <media/videobuf-dma-contig.h> #include "fimc-core.h" static char *fimc_clock_name[NUM_FIMC_CLOCKS] = { "sclk_fimc", "fimc" }; static struct fimc_fmt fimc_formats[] = { { .name = "RGB565", .fourcc = V4L2_PIX_FMT_RGB565X, .depth = 16, .color = S5P_FIMC_RGB565, .buff_cnt = 1, .planes_cnt = 1 }, { .name = "BGR666", .fourcc = V4L2_PIX_FMT_BGR666, .depth = 32, .color = S5P_FIMC_RGB666, .buff_cnt = 1, .planes_cnt = 1 }, { .name = "XRGB-8-8-8-8, 24 bpp", .fourcc = V4L2_PIX_FMT_RGB24, .depth = 32, .color = S5P_FIMC_RGB888, .buff_cnt = 1, .planes_cnt = 1 }, { .name = "YUV 4:2:2 packed, YCbYCr", .fourcc = V4L2_PIX_FMT_YUYV, .depth = 16, .color = S5P_FIMC_YCBYCR422, .buff_cnt = 1, .planes_cnt = 1 }, { .name = "YUV 4:2:2 packed, CbYCrY", .fourcc = V4L2_PIX_FMT_UYVY, .depth = 16, .color = S5P_FIMC_CBYCRY422, .buff_cnt = 1, .planes_cnt = 1 }, { .name = "YUV 4:2:2 packed, CrYCbY", .fourcc = V4L2_PIX_FMT_VYUY, .depth = 16, .color = S5P_FIMC_CRYCBY422, .buff_cnt = 1, .planes_cnt = 1 }, { .name = "YUV 4:2:2 packed, YCrYCb", .fourcc = V4L2_PIX_FMT_YVYU, .depth = 16, .color = S5P_FIMC_YCRYCB422, .buff_cnt = 1, .planes_cnt = 1 }, { .name = "YUV 4:2:2 planar, Y/Cb/Cr", .fourcc = V4L2_PIX_FMT_YUV422P, .depth = 12, .color = S5P_FIMC_YCBCR422, .buff_cnt = 1, .planes_cnt = 3 }, { .name = "YUV 4:2:2 planar, Y/CbCr", .fourcc = V4L2_PIX_FMT_NV16, .depth = 16, .color = S5P_FIMC_YCBCR422, .buff_cnt = 1, .planes_cnt = 2 }, { .name = "YUV 4:2:2 planar, Y/CrCb", .fourcc = V4L2_PIX_FMT_NV61, .depth = 16, .color = S5P_FIMC_RGB565, .buff_cnt = 1, .planes_cnt = 2 }, { .name = "YUV 4:2:0 planar, YCbCr", .fourcc = V4L2_PIX_FMT_YUV420, .depth = 12, .color = S5P_FIMC_YCBCR420, .buff_cnt = 1, .planes_cnt = 3 }, { .name = "YUV 4:2:0 planar, Y/CbCr", .fourcc = V4L2_PIX_FMT_NV12, .depth = 12, .color = S5P_FIMC_YCBCR420, .buff_cnt = 1, .planes_cnt = 2 } }; static struct v4l2_queryctrl fimc_ctrls[] = { { .id = V4L2_CID_HFLIP, .type = V4L2_CTRL_TYPE_BOOLEAN, .name = "Horizontal flip", .minimum = 0, .maximum = 1, .default_value = 0, }, { .id = V4L2_CID_VFLIP, .type = V4L2_CTRL_TYPE_BOOLEAN, .name = "Vertical flip", .minimum = 0, .maximum = 1, .default_value = 0, }, { .id = V4L2_CID_ROTATE, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Rotation (CCW)", .minimum = 0, .maximum = 270, .step = 90, .default_value = 0, }, }; static struct v4l2_queryctrl *get_ctrl(int id) { int i; for (i = 0; i < ARRAY_SIZE(fimc_ctrls); ++i) if (id == fimc_ctrls[i].id) return &fimc_ctrls[i]; return NULL; } static int fimc_check_scaler_ratio(struct v4l2_rect *r, struct fimc_frame *f) { if (r->width > f->width) { if (f->width > (r->width * SCALER_MAX_HRATIO)) return -EINVAL; } else { if ((f->width * SCALER_MAX_HRATIO) < r->width) return -EINVAL; } if (r->height > f->height) { if (f->height > (r->height * SCALER_MAX_VRATIO)) return -EINVAL; } else { if ((f->height * SCALER_MAX_VRATIO) < r->height) return -EINVAL; } return 0; } static int fimc_get_scaler_factor(u32 src, u32 tar, u32 *ratio, u32 *shift) { if (src >= tar * 64) { return -EINVAL; } else if (src >= tar * 32) { *ratio = 32; *shift = 5; } else if (src >= tar * 16) { *ratio = 16; *shift = 4; } else if (src >= tar * 8) { *ratio = 8; *shift = 3; } else if (src >= tar * 4) { *ratio = 4; *shift = 2; } else if (src >= tar * 2) { *ratio = 2; *shift = 1; } else { *ratio = 1; *shift = 0; } return 0; } static int fimc_set_scaler_info(struct fimc_ctx *ctx) { struct fimc_scaler *sc = &ctx->scaler; struct fimc_frame *s_frame = &ctx->s_frame; struct fimc_frame *d_frame = &ctx->d_frame; int tx, ty, sx, sy; int ret; tx = d_frame->width; ty = d_frame->height; if (tx <= 0 || ty <= 0) { v4l2_err(&ctx->fimc_dev->m2m.v4l2_dev, "invalid target size: %d x %d", tx, ty); return -EINVAL; } sx = s_frame->width; sy = s_frame->height; if (sx <= 0 || sy <= 0) { err("invalid source size: %d x %d", sx, sy); return -EINVAL; } sc->real_width = sx; sc->real_height = sy; dbg("sx= %d, sy= %d, tx= %d, ty= %d", sx, sy, tx, ty); ret = fimc_get_scaler_factor(sx, tx, &sc->pre_hratio, &sc->hfactor); if (ret) return ret; ret = fimc_get_scaler_factor(sy, ty, &sc->pre_vratio, &sc->vfactor); if (ret) return ret; sc->pre_dst_width = sx / sc->pre_hratio; sc->pre_dst_height = sy / sc->pre_vratio; sc->main_hratio = (sx << 8) / (tx << sc->hfactor); sc->main_vratio = (sy << 8) / (ty << sc->vfactor); sc->scaleup_h = (tx >= sx) ? 1 : 0; sc->scaleup_v = (ty >= sy) ? 1 : 0; /* check to see if input and output size/format differ */ if (s_frame->fmt->color == d_frame->fmt->color && s_frame->width == d_frame->width && s_frame->height == d_frame->height) sc->copy_mode = 1; else sc->copy_mode = 0; return 0; } static irqreturn_t fimc_isr(int irq, void *priv) { struct fimc_vid_buffer *src_buf, *dst_buf; struct fimc_dev *fimc = (struct fimc_dev *)priv; struct fimc_ctx *ctx; BUG_ON(!fimc); fimc_hw_clear_irq(fimc); spin_lock(&fimc->slock); if (test_and_clear_bit(ST_M2M_PEND, &fimc->state)) { ctx = v4l2_m2m_get_curr_priv(fimc->m2m.m2m_dev); if (!ctx || !ctx->m2m_ctx) goto isr_unlock; src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); if (src_buf && dst_buf) { spin_lock(&fimc->irqlock); src_buf->vb.state = dst_buf->vb.state = VIDEOBUF_DONE; wake_up(&src_buf->vb.done); wake_up(&dst_buf->vb.done); spin_unlock(&fimc->irqlock); v4l2_m2m_job_finish(fimc->m2m.m2m_dev, ctx->m2m_ctx); } } isr_unlock: spin_unlock(&fimc->slock); return IRQ_HANDLED; } /* The color format (planes_cnt, buff_cnt) must be already configured. */ static int fimc_prepare_addr(struct fimc_ctx *ctx, struct fimc_vid_buffer *buf, enum v4l2_buf_type type) { struct fimc_frame *frame; struct fimc_addr *paddr; u32 pix_size; int ret = 0; frame = ctx_m2m_get_frame(ctx, type); if (IS_ERR(frame)) return PTR_ERR(frame); paddr = &frame->paddr; if (!buf) return -EINVAL; pix_size = frame->width * frame->height; dbg("buff_cnt= %d, planes_cnt= %d, frame->size= %d, pix_size= %d", frame->fmt->buff_cnt, frame->fmt->planes_cnt, frame->size, pix_size); if (frame->fmt->buff_cnt == 1) { paddr->y = videobuf_to_dma_contig(&buf->vb); switch (frame->fmt->planes_cnt) { case 1: paddr->cb = 0; paddr->cr = 0; break; case 2: /* decompose Y into Y/Cb */ paddr->cb = (u32)(paddr->y + pix_size); paddr->cr = 0; break; case 3: paddr->cb = (u32)(paddr->y + pix_size); /* decompose Y into Y/Cb/Cr */ if (S5P_FIMC_YCBCR420 == frame->fmt->color) paddr->cr = (u32)(paddr->cb + (pix_size >> 2)); else /* 422 */ paddr->cr = (u32)(paddr->cb + (pix_size >> 1)); break; default: return -EINVAL; } } dbg("PHYS_ADDR: type= %d, y= 0x%X cb= 0x%X cr= 0x%X ret= %d", type, paddr->y, paddr->cb, paddr->cr, ret); return ret; } /* Set order for 1 and 2 plane YCBCR 4:2:2 formats. */ static void fimc_set_yuv_order(struct fimc_ctx *ctx) { /* The one only mode supported in SoC. */ ctx->in_order_2p = S5P_FIMC_LSB_CRCB; ctx->out_order_2p = S5P_FIMC_LSB_CRCB; /* Set order for 1 plane input formats. */ switch (ctx->s_frame.fmt->color) { case S5P_FIMC_YCRYCB422: ctx->in_order_1p = S5P_FIMC_IN_YCRYCB; break; case S5P_FIMC_CBYCRY422: ctx->in_order_1p = S5P_FIMC_IN_CBYCRY; break; case S5P_FIMC_CRYCBY422: ctx->in_order_1p = S5P_FIMC_IN_CRYCBY; break; case S5P_FIMC_YCBYCR422: default: ctx->in_order_1p = S5P_FIMC_IN_YCBYCR; break; } dbg("ctx->in_order_1p= %d", ctx->in_order_1p); switch (ctx->d_frame.fmt->color) { case S5P_FIMC_YCRYCB422: ctx->out_order_1p = S5P_FIMC_OUT_YCRYCB; break; case S5P_FIMC_CBYCRY422: ctx->out_order_1p = S5P_FIMC_OUT_CBYCRY; break; case S5P_FIMC_CRYCBY422: ctx->out_order_1p = S5P_FIMC_OUT_CRYCBY; break; case S5P_FIMC_YCBYCR422: default: ctx->out_order_1p = S5P_FIMC_OUT_YCBYCR; break; } dbg("ctx->out_order_1p= %d", ctx->out_order_1p); } /** * fimc_prepare_config - check dimensions, operation and color mode * and pre-calculate offset and the scaling coefficients. * * @ctx: hardware context information * @flags: flags indicating which parameters to check/update * * Return: 0 if dimensions are valid or non zero otherwise. */ static int fimc_prepare_config(struct fimc_ctx *ctx, u32 flags) { struct fimc_frame *s_frame, *d_frame; struct fimc_vid_buffer *buf = NULL; struct samsung_fimc_variant *variant = ctx->fimc_dev->variant; int ret = 0; s_frame = &ctx->s_frame; d_frame = &ctx->d_frame; if (flags & FIMC_PARAMS) { if ((ctx->out_path == FIMC_DMA) && (ctx->rotation == 90 || ctx->rotation == 270)) { swap(d_frame->f_width, d_frame->f_height); swap(d_frame->width, d_frame->height); } /* Prepare the output offset ratios for scaler. */ d_frame->dma_offset.y_h = d_frame->offs_h; if (!variant->pix_hoff) d_frame->dma_offset.y_h *= (d_frame->fmt->depth >> 3); d_frame->dma_offset.y_v = d_frame->offs_v; d_frame->dma_offset.cb_h = d_frame->offs_h; d_frame->dma_offset.cb_v = d_frame->offs_v; d_frame->dma_offset.cr_h = d_frame->offs_h; d_frame->dma_offset.cr_v = d_frame->offs_v; if (!variant->pix_hoff && d_frame->fmt->planes_cnt == 3) { d_frame->dma_offset.cb_h >>= 1; d_frame->dma_offset.cb_v >>= 1; d_frame->dma_offset.cr_h >>= 1; d_frame->dma_offset.cr_v >>= 1; } dbg("out offset: color= %d, y_h= %d, y_v= %d", d_frame->fmt->color, d_frame->dma_offset.y_h, d_frame->dma_offset.y_v); /* Prepare the input offset ratios for scaler. */ s_frame->dma_offset.y_h = s_frame->offs_h; if (!variant->pix_hoff) s_frame->dma_offset.y_h *= (s_frame->fmt->depth >> 3); s_frame->dma_offset.y_v = s_frame->offs_v; s_frame->dma_offset.cb_h = s_frame->offs_h; s_frame->dma_offset.cb_v = s_frame->offs_v; s_frame->dma_offset.cr_h = s_frame->offs_h; s_frame->dma_offset.cr_v = s_frame->offs_v; if (!variant->pix_hoff && s_frame->fmt->planes_cnt == 3) { s_frame->dma_offset.cb_h >>= 1; s_frame->dma_offset.cb_v >>= 1; s_frame->dma_offset.cr_h >>= 1; s_frame->dma_offset.cr_v >>= 1; } dbg("in offset: color= %d, y_h= %d, y_v= %d", s_frame->fmt->color, s_frame->dma_offset.y_h, s_frame->dma_offset.y_v); fimc_set_yuv_order(ctx); /* Check against the scaler ratio. */ if (s_frame->height > (SCALER_MAX_VRATIO * d_frame->height) || s_frame->width > (SCALER_MAX_HRATIO * d_frame->width)) { err("out of scaler range"); return -EINVAL; } } /* Input DMA mode is not allowed when the scaler is disabled. */ ctx->scaler.enabled = 1; if (flags & FIMC_SRC_ADDR) { buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); ret = fimc_prepare_addr(ctx, buf, V4L2_BUF_TYPE_VIDEO_OUTPUT); if (ret) return ret; } if (flags & FIMC_DST_ADDR) { buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); ret = fimc_prepare_addr(ctx, buf, V4L2_BUF_TYPE_VIDEO_CAPTURE); } return ret; } static void fimc_dma_run(void *priv) { struct fimc_ctx *ctx = priv; struct fimc_dev *fimc; unsigned long flags; u32 ret; if (WARN(!ctx, "null hardware context")) return; fimc = ctx->fimc_dev; spin_lock_irqsave(&ctx->slock, flags); set_bit(ST_M2M_PEND, &fimc->state); ctx->state |= (FIMC_SRC_ADDR | FIMC_DST_ADDR); ret = fimc_prepare_config(ctx, ctx->state); if (ret) { err("general configuration error"); goto dma_unlock; } if (fimc->m2m.ctx != ctx) ctx->state |= FIMC_PARAMS; fimc_hw_set_input_addr(fimc, &ctx->s_frame.paddr); if (ctx->state & FIMC_PARAMS) { fimc_hw_set_input_path(ctx); fimc_hw_set_in_dma(ctx); if (fimc_set_scaler_info(ctx)) { err("scaler configuration error"); goto dma_unlock; } fimc_hw_set_prescaler(ctx); fimc_hw_set_scaler(ctx); fimc_hw_set_target_format(ctx); fimc_hw_set_rotation(ctx); fimc_hw_set_effect(ctx); } fimc_hw_set_output_path(ctx); if (ctx->state & (FIMC_DST_ADDR | FIMC_PARAMS)) fimc_hw_set_output_addr(fimc, &ctx->d_frame.paddr); if (ctx->state & FIMC_PARAMS) fimc_hw_set_out_dma(ctx); if (ctx->scaler.enabled) fimc_hw_start_scaler(fimc); fimc_hw_en_capture(ctx); ctx->state = 0; fimc_hw_start_in_dma(fimc); fimc->m2m.ctx = ctx; dma_unlock: spin_unlock_irqrestore(&ctx->slock, flags); } static void fimc_job_abort(void *priv) { /* Nothing done in job_abort. */ } static void fimc_buf_release(struct videobuf_queue *vq, struct videobuf_buffer *vb) { videobuf_dma_contig_free(vq, vb); vb->state = VIDEOBUF_NEEDS_INIT; } static int fimc_buf_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) { struct fimc_ctx *ctx = vq->priv_data; struct fimc_frame *frame; frame = ctx_m2m_get_frame(ctx, vq->type); if (IS_ERR(frame)) return PTR_ERR(frame); *size = (frame->width * frame->height * frame->fmt->depth) >> 3; if (0 == *count) *count = 1; return 0; } static int fimc_buf_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, enum v4l2_field field) { struct fimc_ctx *ctx = vq->priv_data; struct v4l2_device *v4l2_dev = &ctx->fimc_dev->m2m.v4l2_dev; struct fimc_frame *frame; int ret; frame = ctx_m2m_get_frame(ctx, vq->type); if (IS_ERR(frame)) return PTR_ERR(frame); if (vb->baddr) { if (vb->bsize < frame->size) { v4l2_err(v4l2_dev, "User-provided buffer too small (%d < %d)\n", vb->bsize, frame->size); WARN_ON(1); return -EINVAL; } } else if (vb->state != VIDEOBUF_NEEDS_INIT && vb->bsize < frame->size) { return -EINVAL; } vb->width = frame->width; vb->height = frame->height; vb->bytesperline = (frame->width * frame->fmt->depth) >> 3; vb->size = frame->size; vb->field = field; if (VIDEOBUF_NEEDS_INIT == vb->state) { ret = videobuf_iolock(vq, vb, NULL); if (ret) { v4l2_err(v4l2_dev, "Iolock failed\n"); fimc_buf_release(vq, vb); return ret; } } vb->state = VIDEOBUF_PREPARED; return 0; } static void fimc_buf_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) { struct fimc_ctx *ctx = vq->priv_data; v4l2_m2m_buf_queue(ctx->m2m_ctx, vq, vb); } static struct videobuf_queue_ops fimc_qops = { .buf_setup = fimc_buf_setup, .buf_prepare = fimc_buf_prepare, .buf_queue = fimc_buf_queue, .buf_release = fimc_buf_release, }; static int fimc_m2m_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct fimc_ctx *ctx = file->private_data; struct fimc_dev *fimc = ctx->fimc_dev; strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1); strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1); cap->bus_info[0] = 0; cap->version = KERNEL_VERSION(1, 0, 0); cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT; return 0; } static int fimc_m2m_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f) { struct fimc_fmt *fmt; if (f->index >= ARRAY_SIZE(fimc_formats)) return -EINVAL; fmt = &fimc_formats[f->index]; strncpy(f->description, fmt->name, sizeof(f->description) - 1); f->pixelformat = fmt->fourcc; return 0; } static int fimc_m2m_g_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct fimc_ctx *ctx = priv; struct fimc_frame *frame; frame = ctx_m2m_get_frame(ctx, f->type); if (IS_ERR(frame)) return PTR_ERR(frame); f->fmt.pix.width = frame->width; f->fmt.pix.height = frame->height; f->fmt.pix.field = V4L2_FIELD_NONE; f->fmt.pix.pixelformat = frame->fmt->fourcc; return 0; } static struct fimc_fmt *find_format(struct v4l2_format *f) { struct fimc_fmt *fmt; unsigned int i; for (i = 0; i < ARRAY_SIZE(fimc_formats); ++i) { fmt = &fimc_formats[i]; if (fmt->fourcc == f->fmt.pix.pixelformat) break; } if (i == ARRAY_SIZE(fimc_formats)) return NULL; return fmt; } static int fimc_m2m_try_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct fimc_fmt *fmt; u32 max_width, max_height, mod_x, mod_y; struct fimc_ctx *ctx = priv; struct fimc_dev *fimc = ctx->fimc_dev; struct v4l2_pix_format *pix = &f->fmt.pix; struct samsung_fimc_variant *variant = fimc->variant; fmt = find_format(f); if (!fmt) { v4l2_err(&fimc->m2m.v4l2_dev, "Fourcc format (0x%X) invalid.\n", pix->pixelformat); return -EINVAL; } if (pix->field == V4L2_FIELD_ANY) pix->field = V4L2_FIELD_NONE; else if (V4L2_FIELD_NONE != pix->field) return -EINVAL; if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { max_width = variant->scaler_dis_w; max_height = variant->scaler_dis_w; mod_x = variant->min_inp_pixsize; mod_y = variant->min_inp_pixsize; } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { max_width = variant->out_rot_dis_w; max_height = variant->out_rot_dis_w; mod_x = variant->min_out_pixsize; mod_y = variant->min_out_pixsize; } else { err("Wrong stream type (%d)", f->type); return -EINVAL; } dbg("max_w= %d, max_h= %d", max_width, max_height); if (pix->height > max_height) pix->height = max_height; if (pix->width > max_width) pix->width = max_width; if (tiled_fmt(fmt)) { mod_x = 64; /* 64x32 tile */ mod_y = 32; } dbg("mod_x= 0x%X, mod_y= 0x%X", mod_x, mod_y); pix->width = (pix->width == 0) ? mod_x : ALIGN(pix->width, mod_x); pix->height = (pix->height == 0) ? mod_y : ALIGN(pix->height, mod_y); if (pix->bytesperline == 0 || pix->bytesperline * 8 / fmt->depth > pix->width) pix->bytesperline = (pix->width * fmt->depth) >> 3; if (pix->sizeimage == 0) pix->sizeimage = pix->height * pix->bytesperline; dbg("pix->bytesperline= %d, fmt->depth= %d", pix->bytesperline, fmt->depth); return 0; } static int fimc_m2m_s_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct fimc_ctx *ctx = priv; struct v4l2_device *v4l2_dev = &ctx->fimc_dev->m2m.v4l2_dev; struct videobuf_queue *src_vq, *dst_vq; struct fimc_frame *frame; struct v4l2_pix_format *pix; unsigned long flags; int ret = 0; BUG_ON(!ctx); ret = fimc_m2m_try_fmt(file, priv, f); if (ret) return ret; mutex_lock(&ctx->fimc_dev->lock); src_vq = v4l2_m2m_get_src_vq(ctx->m2m_ctx); dst_vq = v4l2_m2m_get_dst_vq(ctx->m2m_ctx); mutex_lock(&src_vq->vb_lock); mutex_lock(&dst_vq->vb_lock); if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { if (videobuf_queue_is_busy(src_vq)) { v4l2_err(v4l2_dev, "%s queue busy\n", __func__); ret = -EBUSY; goto s_fmt_out; } frame = &ctx->s_frame; spin_lock_irqsave(&ctx->slock, flags); ctx->state |= FIMC_SRC_FMT; spin_unlock_irqrestore(&ctx->slock, flags); } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { if (videobuf_queue_is_busy(dst_vq)) { v4l2_err(v4l2_dev, "%s queue busy\n", __func__); ret = -EBUSY; goto s_fmt_out; } frame = &ctx->d_frame; spin_lock_irqsave(&ctx->slock, flags); ctx->state |= FIMC_DST_FMT; spin_unlock_irqrestore(&ctx->slock, flags); } else { v4l2_err(&ctx->fimc_dev->m2m.v4l2_dev, "Wrong buffer/video queue type (%d)\n", f->type); ret = -EINVAL; goto s_fmt_out; } pix = &f->fmt.pix; frame->fmt = find_format(f); if (!frame->fmt) { ret = -EINVAL; goto s_fmt_out; } frame->f_width = pix->bytesperline * 8 / frame->fmt->depth; frame->f_height = pix->sizeimage/pix->bytesperline; frame->width = pix->width; frame->height = pix->height; frame->o_width = pix->width; frame->o_height = pix->height; frame->offs_h = 0; frame->offs_v = 0; frame->size = (pix->width * pix->height * frame->fmt->depth) >> 3; src_vq->field = dst_vq->field = pix->field; spin_lock_irqsave(&ctx->slock, flags); ctx->state |= FIMC_PARAMS; spin_unlock_irqrestore(&ctx->slock, flags); dbg("f_width= %d, f_height= %d", frame->f_width, frame->f_height); s_fmt_out: mutex_unlock(&dst_vq->vb_lock); mutex_unlock(&src_vq->vb_lock); mutex_unlock(&ctx->fimc_dev->lock); return ret; } static int fimc_m2m_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *reqbufs) { struct fimc_ctx *ctx = priv; return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); } static int fimc_m2m_querybuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct fimc_ctx *ctx = priv; return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); } static int fimc_m2m_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct fimc_ctx *ctx = priv; return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); } static int fimc_m2m_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct fimc_ctx *ctx = priv; return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); } static int fimc_m2m_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { struct fimc_ctx *ctx = priv; return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); } static int fimc_m2m_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { struct fimc_ctx *ctx = priv; return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); } int fimc_m2m_queryctrl(struct file *file, void *priv, struct v4l2_queryctrl *qc) { struct v4l2_queryctrl *c; c = get_ctrl(qc->id); if (!c) return -EINVAL; *qc = *c; return 0; } int fimc_m2m_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) { struct fimc_ctx *ctx = priv; switch (ctrl->id) { case V4L2_CID_HFLIP: ctrl->value = (FLIP_X_AXIS & ctx->flip) ? 1 : 0; break; case V4L2_CID_VFLIP: ctrl->value = (FLIP_Y_AXIS & ctx->flip) ? 1 : 0; break; case V4L2_CID_ROTATE: ctrl->value = ctx->rotation; break; default: v4l2_err(&ctx->fimc_dev->m2m.v4l2_dev, "Invalid control\n"); return -EINVAL; } dbg("ctrl->value= %d", ctrl->value); return 0; } static int check_ctrl_val(struct fimc_ctx *ctx, struct v4l2_control *ctrl) { struct v4l2_queryctrl *c; c = get_ctrl(ctrl->id); if (!c) return -EINVAL; if (ctrl->value < c->minimum || ctrl->value > c->maximum || (c->step != 0 && ctrl->value % c->step != 0)) { v4l2_err(&ctx->fimc_dev->m2m.v4l2_dev, "Invalid control value\n"); return -ERANGE; } return 0; } int fimc_m2m_s_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) { struct fimc_ctx *ctx = priv; struct samsung_fimc_variant *variant = ctx->fimc_dev->variant; unsigned long flags; int ret = 0; ret = check_ctrl_val(ctx, ctrl); if (ret) return ret; switch (ctrl->id) { case V4L2_CID_HFLIP: if (ctx->rotation != 0) return 0; if (ctrl->value) ctx->flip |= FLIP_X_AXIS; else ctx->flip &= ~FLIP_X_AXIS; break; case V4L2_CID_VFLIP: if (ctx->rotation != 0) return 0; if (ctrl->value) ctx->flip |= FLIP_Y_AXIS; else ctx->flip &= ~FLIP_Y_AXIS; break; case V4L2_CID_ROTATE: if (ctrl->value == 90 || ctrl->value == 270) { if (ctx->out_path == FIMC_LCDFIFO && !variant->has_inp_rot) { return -EINVAL; } else if (ctx->in_path == FIMC_DMA && !variant->has_out_rot) { return -EINVAL; } } ctx->rotation = ctrl->value; if (ctrl->value == 180) ctx->flip = FLIP_XY_AXIS; break; default: v4l2_err(&ctx->fimc_dev->m2m.v4l2_dev, "Invalid control\n"); return -EINVAL; } spin_lock_irqsave(&ctx->slock, flags); ctx->state |= FIMC_PARAMS; spin_unlock_irqrestore(&ctx->slock, flags); return 0; } static int fimc_m2m_cropcap(struct file *file, void *fh, struct v4l2_cropcap *cr) { struct fimc_frame *frame; struct fimc_ctx *ctx = fh; frame = ctx_m2m_get_frame(ctx, cr->type); if (IS_ERR(frame)) return PTR_ERR(frame); cr->bounds.left = 0; cr->bounds.top = 0; cr->bounds.width = frame->f_width; cr->bounds.height = frame->f_height; cr->defrect.left = frame->offs_h; cr->defrect.top = frame->offs_v; cr->defrect.width = frame->o_width; cr->defrect.height = frame->o_height; return 0; } static int fimc_m2m_g_crop(struct file *file, void *fh, struct v4l2_crop *cr) { struct fimc_frame *frame; struct fimc_ctx *ctx = file->private_data; frame = ctx_m2m_get_frame(ctx, cr->type); if (IS_ERR(frame)) return PTR_ERR(frame); cr->c.left = frame->offs_h; cr->c.top = frame->offs_v; cr->c.width = frame->width; cr->c.height = frame->height; return 0; } static int fimc_m2m_s_crop(struct file *file, void *fh, struct v4l2_crop *cr) { struct fimc_ctx *ctx = file->private_data; struct fimc_dev *fimc = ctx->fimc_dev; unsigned long flags; struct fimc_frame *f; u32 min_size; int ret = 0; if (cr->c.top < 0 || cr->c.left < 0) { v4l2_err(&fimc->m2m.v4l2_dev, "doesn't support negative values for top & left\n"); return -EINVAL; } if (cr->c.width <= 0 || cr->c.height <= 0) { v4l2_err(&fimc->m2m.v4l2_dev, "crop width and height must be greater than 0\n"); return -EINVAL; } f = ctx_m2m_get_frame(ctx, cr->type); if (IS_ERR(f)) return PTR_ERR(f); /* Adjust to required pixel boundary. */ min_size = (cr->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ? fimc->variant->min_inp_pixsize : fimc->variant->min_out_pixsize; cr->c.width = round_down(cr->c.width, min_size); cr->c.height = round_down(cr->c.height, min_size); cr->c.left = round_down(cr->c.left + 1, min_size); cr->c.top = round_down(cr->c.top + 1, min_size); if ((cr->c.left + cr->c.width > f->o_width) || (cr->c.top + cr->c.height > f->o_height)) { v4l2_err(&fimc->m2m.v4l2_dev, "Error in S_CROP params\n"); return -EINVAL; } spin_lock_irqsave(&ctx->slock, flags); if ((ctx->state & FIMC_SRC_FMT) && (ctx->state & FIMC_DST_FMT)) { /* Check for the pixel scaling ratio when cropping input img. */ if (cr->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ret = fimc_check_scaler_ratio(&cr->c, &ctx->d_frame); else if (cr->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ret = fimc_check_scaler_ratio(&cr->c, &ctx->s_frame); if (ret) { spin_unlock_irqrestore(&ctx->slock, flags); v4l2_err(&fimc->m2m.v4l2_dev, "Out of scaler range"); return -EINVAL; } } ctx->state |= FIMC_PARAMS; spin_unlock_irqrestore(&ctx->slock, flags); f->offs_h = cr->c.left; f->offs_v = cr->c.top; f->width = cr->c.width; f->height = cr->c.height; return 0; } static const struct v4l2_ioctl_ops fimc_m2m_ioctl_ops = { .vidioc_querycap = fimc_m2m_querycap, .vidioc_enum_fmt_vid_cap = fimc_m2m_enum_fmt, .vidioc_enum_fmt_vid_out = fimc_m2m_enum_fmt, .vidioc_g_fmt_vid_cap = fimc_m2m_g_fmt, .vidioc_g_fmt_vid_out = fimc_m2m_g_fmt, .vidioc_try_fmt_vid_cap = fimc_m2m_try_fmt, .vidioc_try_fmt_vid_out = fimc_m2m_try_fmt, .vidioc_s_fmt_vid_cap = fimc_m2m_s_fmt, .vidioc_s_fmt_vid_out = fimc_m2m_s_fmt, .vidioc_reqbufs = fimc_m2m_reqbufs, .vidioc_querybuf = fimc_m2m_querybuf, .vidioc_qbuf = fimc_m2m_qbuf, .vidioc_dqbuf = fimc_m2m_dqbuf, .vidioc_streamon = fimc_m2m_streamon, .vidioc_streamoff = fimc_m2m_streamoff, .vidioc_queryctrl = fimc_m2m_queryctrl, .vidioc_g_ctrl = fimc_m2m_g_ctrl, .vidioc_s_ctrl = fimc_m2m_s_ctrl, .vidioc_g_crop = fimc_m2m_g_crop, .vidioc_s_crop = fimc_m2m_s_crop, .vidioc_cropcap = fimc_m2m_cropcap }; static void queue_init(void *priv, struct videobuf_queue *vq, enum v4l2_buf_type type) { struct fimc_ctx *ctx = priv; struct fimc_dev *fimc = ctx->fimc_dev; videobuf_queue_dma_contig_init(vq, &fimc_qops, fimc->m2m.v4l2_dev.dev, &fimc->irqlock, type, V4L2_FIELD_NONE, sizeof(struct fimc_vid_buffer), priv); } static int fimc_m2m_open(struct file *file) { struct fimc_dev *fimc = video_drvdata(file); struct fimc_ctx *ctx = NULL; int err = 0; mutex_lock(&fimc->lock); fimc->m2m.refcnt++; set_bit(ST_OUTDMA_RUN, &fimc->state); mutex_unlock(&fimc->lock); ctx = kzalloc(sizeof *ctx, GFP_KERNEL); if (!ctx) return -ENOMEM; file->private_data = ctx; ctx->fimc_dev = fimc; /* default format */ ctx->s_frame.fmt = &fimc_formats[0]; ctx->d_frame.fmt = &fimc_formats[0]; /* per user process device context initialization */ ctx->state = 0; ctx->flags = 0; ctx->effect.type = S5P_FIMC_EFFECT_ORIGINAL; ctx->in_path = FIMC_DMA; ctx->out_path = FIMC_DMA; spin_lock_init(&ctx->slock); ctx->m2m_ctx = v4l2_m2m_ctx_init(ctx, fimc->m2m.m2m_dev, queue_init); if (IS_ERR(ctx->m2m_ctx)) { err = PTR_ERR(ctx->m2m_ctx); kfree(ctx); } return err; } static int fimc_m2m_release(struct file *file) { struct fimc_ctx *ctx = file->private_data; struct fimc_dev *fimc = ctx->fimc_dev; v4l2_m2m_ctx_release(ctx->m2m_ctx); kfree(ctx); mutex_lock(&fimc->lock); if (--fimc->m2m.refcnt <= 0) clear_bit(ST_OUTDMA_RUN, &fimc->state); mutex_unlock(&fimc->lock); return 0; } static unsigned int fimc_m2m_poll(struct file *file, struct poll_table_struct *wait) { struct fimc_ctx *ctx = file->private_data; return v4l2_m2m_poll(file, ctx->m2m_ctx, wait); } static int fimc_m2m_mmap(struct file *file, struct vm_area_struct *vma) { struct fimc_ctx *ctx = file->private_data; return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); } static const struct v4l2_file_operations fimc_m2m_fops = { .owner = THIS_MODULE, .open = fimc_m2m_open, .release = fimc_m2m_release, .poll = fimc_m2m_poll, .ioctl = video_ioctl2, .mmap = fimc_m2m_mmap, }; static struct v4l2_m2m_ops m2m_ops = { .device_run = fimc_dma_run, .job_abort = fimc_job_abort, }; static int fimc_register_m2m_device(struct fimc_dev *fimc) { struct video_device *vfd; struct platform_device *pdev; struct v4l2_device *v4l2_dev; int ret = 0; if (!fimc) return -ENODEV; pdev = fimc->pdev; v4l2_dev = &fimc->m2m.v4l2_dev; /* set name if it is empty */ if (!v4l2_dev->name[0]) snprintf(v4l2_dev->name, sizeof(v4l2_dev->name), "%s.m2m", dev_name(&pdev->dev)); ret = v4l2_device_register(&pdev->dev, v4l2_dev); if (ret) return ret;; vfd = video_device_alloc(); if (!vfd) { v4l2_err(v4l2_dev, "Failed to allocate video device\n"); goto err_m2m_r1; } vfd->fops = &fimc_m2m_fops; vfd->ioctl_ops = &fimc_m2m_ioctl_ops; vfd->minor = -1; vfd->release = video_device_release; snprintf(vfd->name, sizeof(vfd->name), "%s:m2m", dev_name(&pdev->dev)); video_set_drvdata(vfd, fimc); platform_set_drvdata(pdev, fimc); fimc->m2m.vfd = vfd; fimc->m2m.m2m_dev = v4l2_m2m_init(&m2m_ops); if (IS_ERR(fimc->m2m.m2m_dev)) { v4l2_err(v4l2_dev, "failed to initialize v4l2-m2m device\n"); ret = PTR_ERR(fimc->m2m.m2m_dev); goto err_m2m_r2; } ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); if (ret) { v4l2_err(v4l2_dev, "%s(): failed to register video device\n", __func__); goto err_m2m_r3; } v4l2_info(v4l2_dev, "FIMC m2m driver registered as /dev/video%d\n", vfd->num); return 0; err_m2m_r3: v4l2_m2m_release(fimc->m2m.m2m_dev); err_m2m_r2: video_device_release(fimc->m2m.vfd); err_m2m_r1: v4l2_device_unregister(v4l2_dev); return ret; } static void fimc_unregister_m2m_device(struct fimc_dev *fimc) { if (fimc) { v4l2_m2m_release(fimc->m2m.m2m_dev); video_unregister_device(fimc->m2m.vfd); video_device_release(fimc->m2m.vfd); v4l2_device_unregister(&fimc->m2m.v4l2_dev); } } static void fimc_clk_release(struct fimc_dev *fimc) { int i; for (i = 0; i < NUM_FIMC_CLOCKS; i++) { if (fimc->clock[i]) { clk_disable(fimc->clock[i]); clk_put(fimc->clock[i]); } } } static int fimc_clk_get(struct fimc_dev *fimc) { int i; for (i = 0; i < NUM_FIMC_CLOCKS; i++) { fimc->clock[i] = clk_get(&fimc->pdev->dev, fimc_clock_name[i]); if (IS_ERR(fimc->clock[i])) { dev_err(&fimc->pdev->dev, "failed to get fimc clock: %s\n", fimc_clock_name[i]); return -ENXIO; } clk_enable(fimc->clock[i]); } return 0; } static int fimc_probe(struct platform_device *pdev) { struct fimc_dev *fimc; struct resource *res; struct samsung_fimc_driverdata *drv_data; int ret = 0; dev_dbg(&pdev->dev, "%s():\n", __func__); drv_data = (struct samsung_fimc_driverdata *) platform_get_device_id(pdev)->driver_data; if (pdev->id >= drv_data->devs_cnt) { dev_err(&pdev->dev, "Invalid platform device id: %d\n", pdev->id); return -EINVAL; } fimc = kzalloc(sizeof(struct fimc_dev), GFP_KERNEL); if (!fimc) return -ENOMEM; fimc->id = pdev->id; fimc->variant = drv_data->variant[fimc->id]; fimc->pdev = pdev; fimc->state = ST_IDLE; spin_lock_init(&fimc->irqlock); spin_lock_init(&fimc->slock); mutex_init(&fimc->lock); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(&pdev->dev, "failed to find the registers\n"); ret = -ENOENT; goto err_info; } fimc->regs_res = request_mem_region(res->start, resource_size(res), dev_name(&pdev->dev)); if (!fimc->regs_res) { dev_err(&pdev->dev, "failed to obtain register region\n"); ret = -ENOENT; goto err_info; } fimc->regs = ioremap(res->start, resource_size(res)); if (!fimc->regs) { dev_err(&pdev->dev, "failed to map registers\n"); ret = -ENXIO; goto err_req_region; } ret = fimc_clk_get(fimc); if (ret) goto err_regs_unmap; res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!res) { dev_err(&pdev->dev, "failed to get IRQ resource\n"); ret = -ENXIO; goto err_clk; } fimc->irq = res->start; fimc_hw_reset(fimc); ret = request_irq(fimc->irq, fimc_isr, 0, pdev->name, fimc); if (ret) { dev_err(&pdev->dev, "failed to install irq (%d)\n", ret); goto err_clk; } fimc->work_queue = create_workqueue(dev_name(&fimc->pdev->dev)); if (!fimc->work_queue) goto err_irq; ret = fimc_register_m2m_device(fimc); if (ret) goto err_wq; fimc_hw_en_lastirq(fimc, true); dev_dbg(&pdev->dev, "%s(): fimc-%d registered successfully\n", __func__, fimc->id); return 0; err_wq: destroy_workqueue(fimc->work_queue); err_irq: free_irq(fimc->irq, fimc); err_clk: fimc_clk_release(fimc); err_regs_unmap: iounmap(fimc->regs); err_req_region: release_resource(fimc->regs_res); kfree(fimc->regs_res); err_info: kfree(fimc); dev_err(&pdev->dev, "failed to install\n"); return ret; } static int __devexit fimc_remove(struct platform_device *pdev) { struct fimc_dev *fimc = (struct fimc_dev *)platform_get_drvdata(pdev); v4l2_info(&fimc->m2m.v4l2_dev, "Removing %s\n", pdev->name); free_irq(fimc->irq, fimc); fimc_hw_reset(fimc); fimc_unregister_m2m_device(fimc); fimc_clk_release(fimc); iounmap(fimc->regs); release_resource(fimc->regs_res); kfree(fimc->regs_res); kfree(fimc); return 0; } static struct samsung_fimc_variant fimc01_variant_s5p = { .has_inp_rot = 1, .has_out_rot = 1, .min_inp_pixsize = 16, .min_out_pixsize = 16, .scaler_en_w = 3264, .scaler_dis_w = 8192, .in_rot_en_h = 1920, .in_rot_dis_w = 8192, .out_rot_en_w = 1920, .out_rot_dis_w = 4224, }; static struct samsung_fimc_variant fimc2_variant_s5p = { .min_inp_pixsize = 16, .min_out_pixsize = 16, .scaler_en_w = 4224, .scaler_dis_w = 8192, .in_rot_en_h = 1920, .in_rot_dis_w = 8192, .out_rot_en_w = 1920, .out_rot_dis_w = 4224, }; static struct samsung_fimc_variant fimc01_variant_s5pv210 = { .has_inp_rot = 1, .has_out_rot = 1, .min_inp_pixsize = 16, .min_out_pixsize = 32, .scaler_en_w = 4224, .scaler_dis_w = 8192, .in_rot_en_h = 1920, .in_rot_dis_w = 8192, .out_rot_en_w = 1920, .out_rot_dis_w = 4224, }; static struct samsung_fimc_variant fimc2_variant_s5pv210 = { .min_inp_pixsize = 16, .min_out_pixsize = 32, .scaler_en_w = 1920, .scaler_dis_w = 8192, .in_rot_en_h = 1280, .in_rot_dis_w = 8192, .out_rot_en_w = 1280, .out_rot_dis_w = 1920, }; static struct samsung_fimc_driverdata fimc_drvdata_s5p = { .variant = { [0] = &fimc01_variant_s5p, [1] = &fimc01_variant_s5p, [2] = &fimc2_variant_s5p, }, .devs_cnt = 3 }; static struct samsung_fimc_driverdata fimc_drvdata_s5pv210 = { .variant = { [0] = &fimc01_variant_s5pv210, [1] = &fimc01_variant_s5pv210, [2] = &fimc2_variant_s5pv210, }, .devs_cnt = 3 }; static struct platform_device_id fimc_driver_ids[] = { { .name = "s5p-fimc", .driver_data = (unsigned long)&fimc_drvdata_s5p, }, { .name = "s5pv210-fimc", .driver_data = (unsigned long)&fimc_drvdata_s5pv210, }, {}, }; MODULE_DEVICE_TABLE(platform, fimc_driver_ids); static struct platform_driver fimc_driver = { .probe = fimc_probe, .remove = __devexit_p(fimc_remove), .id_table = fimc_driver_ids, .driver = { .name = MODULE_NAME, .owner = THIS_MODULE, } }; static char banner[] __initdata = KERN_INFO "S5PC Camera Interface V4L2 Driver, (c) 2010 Samsung Electronics\n"; static int __init fimc_init(void) { u32 ret; printk(banner); ret = platform_driver_register(&fimc_driver); if (ret) { printk(KERN_ERR "FIMC platform driver register failed\n"); return -1; } return 0; } static void __exit fimc_exit(void) { platform_driver_unregister(&fimc_driver); } module_init(fimc_init); module_exit(fimc_exit); MODULE_AUTHOR("Sylwester Nawrocki, s.nawrocki@samsung.com"); MODULE_DESCRIPTION("S3C/S5P FIMC (video postprocessor) driver"); MODULE_LICENSE("GPL");