--- /dev/null
+/*
+ * V4L2 Capture IC Preprocess Subdev for Freescale i.MX5/6 SOC
+ *
+ * This subdevice handles capture of video frames from the CSI or VDIC,
+ * which are routed directly to the Image Converter preprocess tasks,
+ * for resizing, colorspace conversion, and rotation.
+ *
+ * Copyright (c) 2012-2017 Mentor Graphics Inc.
+ *
+ * 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/delay.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-subdev.h>
+#include <media/imx.h>
+#include "imx-media.h"
+#include "imx-ic.h"
+
+/*
+ * Min/Max supported width and heights.
+ */
+#define MIN_W 176
+#define MIN_H 144
+#define MAX_W 4096
+#define MAX_H 4096
+#define W_ALIGN 4 /* multiple of 16 pixels */
+#define H_ALIGN 1 /* multiple of 2 lines */
+#define S_ALIGN 1 /* multiple of 2 */
+
+struct prp_priv {
+ struct imx_media_dev *md;
+ struct imx_ic_priv *ic_priv;
+ struct media_pad pad[PRP_NUM_PADS];
+
+ /* lock to protect all members below */
+ struct mutex lock;
+
+ /* IPU units we require */
+ struct ipu_soc *ipu;
+
+ struct v4l2_subdev *src_sd;
+ struct v4l2_subdev *sink_sd_prpenc;
+ struct v4l2_subdev *sink_sd_prpvf;
+
+ /* the CSI id at link validate */
+ int csi_id;
+
+ struct v4l2_mbus_framefmt format_mbus;
+ struct v4l2_fract frame_interval;
+
+ int stream_count;
+};
+
+static inline struct prp_priv *sd_to_priv(struct v4l2_subdev *sd)
+{
+ struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
+
+ return ic_priv->prp_priv;
+}
+
+static int prp_start(struct prp_priv *priv)
+{
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+ bool src_is_vdic;
+
+ priv->ipu = priv->md->ipu[ic_priv->ipu_id];
+
+ /* set IC to receive from CSI or VDI depending on source */
+ src_is_vdic = !!(priv->src_sd->grp_id & IMX_MEDIA_GRP_ID_VDIC);
+
+ ipu_set_ic_src_mux(priv->ipu, priv->csi_id, src_is_vdic);
+
+ return 0;
+}
+
+static void prp_stop(struct prp_priv *priv)
+{
+}
+
+static struct v4l2_mbus_framefmt *
+__prp_get_fmt(struct prp_priv *priv, struct v4l2_subdev_pad_config *cfg,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+
+ if (which == V4L2_SUBDEV_FORMAT_TRY)
+ return v4l2_subdev_get_try_format(&ic_priv->sd, cfg, pad);
+ else
+ return &priv->format_mbus;
+}
+
+/*
+ * V4L2 subdev operations.
+ */
+
+static int prp_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+ struct v4l2_mbus_framefmt *infmt;
+ int ret = 0;
+
+ mutex_lock(&priv->lock);
+
+ switch (code->pad) {
+ case PRP_SINK_PAD:
+ ret = imx_media_enum_ipu_format(&code->code, code->index,
+ CS_SEL_ANY);
+ break;
+ case PRP_SRC_PAD_PRPENC:
+ case PRP_SRC_PAD_PRPVF:
+ if (code->index != 0) {
+ ret = -EINVAL;
+ goto out;
+ }
+ infmt = __prp_get_fmt(priv, cfg, PRP_SINK_PAD, code->which);
+ code->code = infmt->code;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static int prp_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *sdformat)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+ struct v4l2_mbus_framefmt *fmt;
+ int ret = 0;
+
+ if (sdformat->pad >= PRP_NUM_PADS)
+ return -EINVAL;
+
+ mutex_lock(&priv->lock);
+
+ fmt = __prp_get_fmt(priv, cfg, sdformat->pad, sdformat->which);
+ if (!fmt) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ sdformat->format = *fmt;
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static int prp_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *sdformat)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+ const struct imx_media_pixfmt *cc;
+ struct v4l2_mbus_framefmt *fmt;
+ int ret = 0;
+ u32 code;
+
+ if (sdformat->pad >= PRP_NUM_PADS)
+ return -EINVAL;
+
+ mutex_lock(&priv->lock);
+
+ if (priv->stream_count > 0) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ switch (sdformat->pad) {
+ case PRP_SINK_PAD:
+ v4l_bound_align_image(&sdformat->format.width, MIN_W, MAX_W,
+ W_ALIGN, &sdformat->format.height,
+ MIN_H, MAX_H, H_ALIGN, S_ALIGN);
+
+ cc = imx_media_find_ipu_format(sdformat->format.code,
+ CS_SEL_ANY);
+ if (!cc) {
+ imx_media_enum_ipu_format(&code, 0, CS_SEL_ANY);
+ cc = imx_media_find_ipu_format(code, CS_SEL_ANY);
+ sdformat->format.code = cc->codes[0];
+ }
+ break;
+ case PRP_SRC_PAD_PRPENC:
+ case PRP_SRC_PAD_PRPVF:
+ /* Output pads mirror input pad */
+ fmt = __prp_get_fmt(priv, cfg, PRP_SINK_PAD, sdformat->which);
+ sdformat->format = *fmt;
+ break;
+ }
+
+ fmt = __prp_get_fmt(priv, cfg, sdformat->pad, sdformat->which);
+ *fmt = sdformat->format;
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static int prp_link_setup(struct media_entity *entity,
+ const struct media_pad *local,
+ const struct media_pad *remote, u32 flags)
+{
+ struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
+ struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
+ struct prp_priv *priv = ic_priv->prp_priv;
+ struct v4l2_subdev *remote_sd;
+ int ret = 0;
+
+ dev_dbg(ic_priv->dev, "link setup %s -> %s", remote->entity->name,
+ local->entity->name);
+
+ remote_sd = media_entity_to_v4l2_subdev(remote->entity);
+
+ mutex_lock(&priv->lock);
+
+ if (local->flags & MEDIA_PAD_FL_SINK) {
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (priv->src_sd) {
+ ret = -EBUSY;
+ goto out;
+ }
+ if (priv->sink_sd_prpenc && (remote_sd->grp_id &
+ IMX_MEDIA_GRP_ID_VDIC)) {
+ ret = -EINVAL;
+ goto out;
+ }
+ priv->src_sd = remote_sd;
+ } else {
+ priv->src_sd = NULL;
+ }
+
+ goto out;
+ }
+
+ /* this is a source pad */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ switch (local->index) {
+ case PRP_SRC_PAD_PRPENC:
+ if (priv->sink_sd_prpenc) {
+ ret = -EBUSY;
+ goto out;
+ }
+ if (priv->src_sd && (priv->src_sd->grp_id &
+ IMX_MEDIA_GRP_ID_VDIC)) {
+ ret = -EINVAL;
+ goto out;
+ }
+ priv->sink_sd_prpenc = remote_sd;
+ break;
+ case PRP_SRC_PAD_PRPVF:
+ if (priv->sink_sd_prpvf) {
+ ret = -EBUSY;
+ goto out;
+ }
+ priv->sink_sd_prpvf = remote_sd;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ } else {
+ switch (local->index) {
+ case PRP_SRC_PAD_PRPENC:
+ priv->sink_sd_prpenc = NULL;
+ break;
+ case PRP_SRC_PAD_PRPVF:
+ priv->sink_sd_prpvf = NULL;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ }
+
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static int prp_link_validate(struct v4l2_subdev *sd,
+ struct media_link *link,
+ struct v4l2_subdev_format *source_fmt,
+ struct v4l2_subdev_format *sink_fmt)
+{
+ struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
+ struct prp_priv *priv = ic_priv->prp_priv;
+ struct imx_media_subdev *csi;
+ int ret;
+
+ ret = v4l2_subdev_link_validate_default(sd, link,
+ source_fmt, sink_fmt);
+ if (ret)
+ return ret;
+
+ csi = imx_media_find_upstream_subdev(priv->md, &ic_priv->sd.entity,
+ IMX_MEDIA_GRP_ID_CSI);
+ if (IS_ERR(csi))
+ csi = NULL;
+
+ mutex_lock(&priv->lock);
+
+ if (priv->src_sd->grp_id & IMX_MEDIA_GRP_ID_VDIC) {
+ /*
+ * the ->PRPENC link cannot be enabled if the source
+ * is the VDIC
+ */
+ if (priv->sink_sd_prpenc)
+ ret = -EINVAL;
+ goto out;
+ } else {
+ /* the source is a CSI */
+ if (!csi) {
+ ret = -EINVAL;
+ goto out;
+ }
+ }
+
+ if (csi) {
+ switch (csi->sd->grp_id) {
+ case IMX_MEDIA_GRP_ID_CSI0:
+ priv->csi_id = 0;
+ break;
+ case IMX_MEDIA_GRP_ID_CSI1:
+ priv->csi_id = 1;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ } else {
+ priv->csi_id = 0;
+ }
+
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static int prp_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
+ struct prp_priv *priv = ic_priv->prp_priv;
+ int ret = 0;
+
+ mutex_lock(&priv->lock);
+
+ if (!priv->src_sd || (!priv->sink_sd_prpenc && !priv->sink_sd_prpvf)) {
+ ret = -EPIPE;
+ goto out;
+ }
+
+ /*
+ * enable/disable streaming only if stream_count is
+ * going from 0 to 1 / 1 to 0.
+ */
+ if (priv->stream_count != !enable)
+ goto update_count;
+
+ dev_dbg(ic_priv->dev, "stream %s\n", enable ? "ON" : "OFF");
+
+ if (enable)
+ ret = prp_start(priv);
+ else
+ prp_stop(priv);
+ if (ret)
+ goto out;
+
+ /* start/stop upstream */
+ ret = v4l2_subdev_call(priv->src_sd, video, s_stream, enable);
+ ret = (ret && ret != -ENOIOCTLCMD) ? ret : 0;
+ if (ret) {
+ if (enable)
+ prp_stop(priv);
+ goto out;
+ }
+
+update_count:
+ priv->stream_count += enable ? 1 : -1;
+ WARN_ON(priv->stream_count < 0);
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static int prp_g_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+
+ if (fi->pad >= PRP_NUM_PADS)
+ return -EINVAL;
+
+ mutex_lock(&priv->lock);
+ fi->interval = priv->frame_interval;
+ mutex_unlock(&priv->lock);
+
+ return 0;
+}
+
+static int prp_s_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+
+ if (fi->pad >= PRP_NUM_PADS)
+ return -EINVAL;
+
+ /* No limits on frame interval */
+ mutex_lock(&priv->lock);
+ priv->frame_interval = fi->interval;
+ mutex_unlock(&priv->lock);
+
+ return 0;
+}
+
+/*
+ * retrieve our pads parsed from the OF graph by the media device
+ */
+static int prp_registered(struct v4l2_subdev *sd)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+ int i, ret;
+ u32 code;
+
+ /* get media device */
+ priv->md = dev_get_drvdata(sd->v4l2_dev->dev);
+
+ for (i = 0; i < PRP_NUM_PADS; i++) {
+ priv->pad[i].flags = (i == PRP_SINK_PAD) ?
+ MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
+ }
+
+ /* init default frame interval */
+ priv->frame_interval.numerator = 1;
+ priv->frame_interval.denominator = 30;
+
+ /* set a default mbus format */
+ imx_media_enum_ipu_format(&code, 0, CS_SEL_YUV);
+ ret = imx_media_init_mbus_fmt(&priv->format_mbus, 640, 480, code,
+ V4L2_FIELD_NONE, NULL);
+ if (ret)
+ return ret;
+
+ return media_entity_pads_init(&sd->entity, PRP_NUM_PADS, priv->pad);
+}
+
+static const struct v4l2_subdev_pad_ops prp_pad_ops = {
+ .enum_mbus_code = prp_enum_mbus_code,
+ .get_fmt = prp_get_fmt,
+ .set_fmt = prp_set_fmt,
+ .link_validate = prp_link_validate,
+};
+
+static const struct v4l2_subdev_video_ops prp_video_ops = {
+ .g_frame_interval = prp_g_frame_interval,
+ .s_frame_interval = prp_s_frame_interval,
+ .s_stream = prp_s_stream,
+};
+
+static const struct media_entity_operations prp_entity_ops = {
+ .link_setup = prp_link_setup,
+ .link_validate = v4l2_subdev_link_validate,
+};
+
+static const struct v4l2_subdev_ops prp_subdev_ops = {
+ .video = &prp_video_ops,
+ .pad = &prp_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops prp_internal_ops = {
+ .registered = prp_registered,
+};
+
+static int prp_init(struct imx_ic_priv *ic_priv)
+{
+ struct prp_priv *priv;
+
+ priv = devm_kzalloc(ic_priv->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ mutex_init(&priv->lock);
+ ic_priv->prp_priv = priv;
+ priv->ic_priv = ic_priv;
+
+ return 0;
+}
+
+static void prp_remove(struct imx_ic_priv *ic_priv)
+{
+ struct prp_priv *priv = ic_priv->prp_priv;
+
+ mutex_destroy(&priv->lock);
+}
+
+struct imx_ic_ops imx_ic_prp_ops = {
+ .subdev_ops = &prp_subdev_ops,
+ .internal_ops = &prp_internal_ops,
+ .entity_ops = &prp_entity_ops,
+ .init = prp_init,
+ .remove = prp_remove,
+};
--- /dev/null
+/*
+ * V4L2 Capture IC Preprocess Subdev for Freescale i.MX5/6 SOC
+ *
+ * This subdevice handles capture of video frames from the CSI or VDIC,
+ * which are routed directly to the Image Converter preprocess tasks,
+ * for resizing, colorspace conversion, and rotation.
+ *
+ * Copyright (c) 2012-2017 Mentor Graphics Inc.
+ *
+ * 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/delay.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-mc.h>
+#include <media/v4l2-subdev.h>
+#include <media/imx.h>
+#include "imx-media.h"
+#include "imx-ic.h"
+
+/*
+ * Min/Max supported width and heights.
+ *
+ * We allow planar output, so we have to align width at the source pad
+ * by 16 pixels to meet IDMAC alignment requirements for possible planar
+ * output.
+ *
+ * TODO: move this into pad format negotiation, if capture device
+ * has not requested a planar format, we should allow 8 pixel
+ * alignment at the source pad.
+ */
+#define MIN_W_SINK 176
+#define MIN_H_SINK 144
+#define MAX_W_SINK 4096
+#define MAX_H_SINK 4096
+#define W_ALIGN_SINK 3 /* multiple of 8 pixels */
+#define H_ALIGN_SINK 1 /* multiple of 2 lines */
+
+#define MAX_W_SRC 1024
+#define MAX_H_SRC 1024
+#define W_ALIGN_SRC 4 /* multiple of 16 pixels */
+#define H_ALIGN_SRC 1 /* multiple of 2 lines */
+
+#define S_ALIGN 1 /* multiple of 2 */
+
+struct prp_priv {
+ struct imx_media_dev *md;
+ struct imx_ic_priv *ic_priv;
+ struct media_pad pad[PRPENCVF_NUM_PADS];
+ /* the video device at output pad */
+ struct imx_media_video_dev *vdev;
+
+ /* lock to protect all members below */
+ struct mutex lock;
+
+ /* IPU units we require */
+ struct ipu_soc *ipu;
+ struct ipu_ic *ic;
+ struct ipuv3_channel *out_ch;
+ struct ipuv3_channel *rot_in_ch;
+ struct ipuv3_channel *rot_out_ch;
+
+ /* active vb2 buffers to send to video dev sink */
+ struct imx_media_buffer *active_vb2_buf[2];
+ struct imx_media_dma_buf underrun_buf;
+
+ int ipu_buf_num; /* ipu double buffer index: 0-1 */
+
+ /* the sink for the captured frames */
+ struct media_entity *sink;
+ /* the source subdev */
+ struct v4l2_subdev *src_sd;
+
+ struct v4l2_mbus_framefmt format_mbus[PRPENCVF_NUM_PADS];
+ const struct imx_media_pixfmt *cc[PRPENCVF_NUM_PADS];
+ struct v4l2_fract frame_interval;
+
+ struct imx_media_dma_buf rot_buf[2];
+
+ /* controls */
+ struct v4l2_ctrl_handler ctrl_hdlr;
+ int rotation; /* degrees */
+ bool hflip;
+ bool vflip;
+
+ /* derived from rotation, hflip, vflip controls */
+ enum ipu_rotate_mode rot_mode;
+
+ spinlock_t irqlock; /* protect eof_irq handler */
+
+ struct timer_list eof_timeout_timer;
+ int eof_irq;
+ int nfb4eof_irq;
+
+ int stream_count;
+ bool last_eof; /* waiting for last EOF at stream off */
+ bool nfb4eof; /* NFB4EOF encountered during streaming */
+ struct completion last_eof_comp;
+};
+
+static const struct prp_channels {
+ u32 out_ch;
+ u32 rot_in_ch;
+ u32 rot_out_ch;
+} prp_channel[] = {
+ [IC_TASK_ENCODER] = {
+ .out_ch = IPUV3_CHANNEL_IC_PRP_ENC_MEM,
+ .rot_in_ch = IPUV3_CHANNEL_MEM_ROT_ENC,
+ .rot_out_ch = IPUV3_CHANNEL_ROT_ENC_MEM,
+ },
+ [IC_TASK_VIEWFINDER] = {
+ .out_ch = IPUV3_CHANNEL_IC_PRP_VF_MEM,
+ .rot_in_ch = IPUV3_CHANNEL_MEM_ROT_VF,
+ .rot_out_ch = IPUV3_CHANNEL_ROT_VF_MEM,
+ },
+};
+
+static inline struct prp_priv *sd_to_priv(struct v4l2_subdev *sd)
+{
+ struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
+
+ return ic_priv->task_priv;
+}
+
+static void prp_put_ipu_resources(struct prp_priv *priv)
+{
+ if (!IS_ERR_OR_NULL(priv->ic))
+ ipu_ic_put(priv->ic);
+ priv->ic = NULL;
+
+ if (!IS_ERR_OR_NULL(priv->out_ch))
+ ipu_idmac_put(priv->out_ch);
+ priv->out_ch = NULL;
+
+ if (!IS_ERR_OR_NULL(priv->rot_in_ch))
+ ipu_idmac_put(priv->rot_in_ch);
+ priv->rot_in_ch = NULL;
+
+ if (!IS_ERR_OR_NULL(priv->rot_out_ch))
+ ipu_idmac_put(priv->rot_out_ch);
+ priv->rot_out_ch = NULL;
+}
+
+static int prp_get_ipu_resources(struct prp_priv *priv)
+{
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+ int ret, task = ic_priv->task_id;
+
+ priv->ipu = priv->md->ipu[ic_priv->ipu_id];
+
+ priv->ic = ipu_ic_get(priv->ipu, task);
+ if (IS_ERR(priv->ic)) {
+ v4l2_err(&ic_priv->sd, "failed to get IC\n");
+ ret = PTR_ERR(priv->ic);
+ goto out;
+ }
+
+ priv->out_ch = ipu_idmac_get(priv->ipu,
+ prp_channel[task].out_ch);
+ if (IS_ERR(priv->out_ch)) {
+ v4l2_err(&ic_priv->sd, "could not get IDMAC channel %u\n",
+ prp_channel[task].out_ch);
+ ret = PTR_ERR(priv->out_ch);
+ goto out;
+ }
+
+ priv->rot_in_ch = ipu_idmac_get(priv->ipu,
+ prp_channel[task].rot_in_ch);
+ if (IS_ERR(priv->rot_in_ch)) {
+ v4l2_err(&ic_priv->sd, "could not get IDMAC channel %u\n",
+ prp_channel[task].rot_in_ch);
+ ret = PTR_ERR(priv->rot_in_ch);
+ goto out;
+ }
+
+ priv->rot_out_ch = ipu_idmac_get(priv->ipu,
+ prp_channel[task].rot_out_ch);
+ if (IS_ERR(priv->rot_out_ch)) {
+ v4l2_err(&ic_priv->sd, "could not get IDMAC channel %u\n",
+ prp_channel[task].rot_out_ch);
+ ret = PTR_ERR(priv->rot_out_ch);
+ goto out;
+ }
+
+ return 0;
+out:
+ prp_put_ipu_resources(priv);
+ return ret;
+}
+
+static void prp_vb2_buf_done(struct prp_priv *priv, struct ipuv3_channel *ch)
+{
+ struct imx_media_video_dev *vdev = priv->vdev;
+ struct imx_media_buffer *done, *next;
+ struct vb2_buffer *vb;
+ dma_addr_t phys;
+
+ done = priv->active_vb2_buf[priv->ipu_buf_num];
+ if (done) {
+ vb = &done->vbuf.vb2_buf;
+ vb->timestamp = ktime_get_ns();
+ vb2_buffer_done(vb, priv->nfb4eof ?
+ VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
+ }
+
+ priv->nfb4eof = false;
+
+ /* get next queued buffer */
+ next = imx_media_capture_device_next_buf(vdev);
+ if (next) {
+ phys = vb2_dma_contig_plane_dma_addr(&next->vbuf.vb2_buf, 0);
+ priv->active_vb2_buf[priv->ipu_buf_num] = next;
+ } else {
+ phys = priv->underrun_buf.phys;
+ priv->active_vb2_buf[priv->ipu_buf_num] = NULL;
+ }
+
+ if (ipu_idmac_buffer_is_ready(ch, priv->ipu_buf_num))
+ ipu_idmac_clear_buffer(ch, priv->ipu_buf_num);
+
+ ipu_cpmem_set_buffer(ch, priv->ipu_buf_num, phys);
+}
+
+static irqreturn_t prp_eof_interrupt(int irq, void *dev_id)
+{
+ struct prp_priv *priv = dev_id;
+ struct ipuv3_channel *channel;
+
+ spin_lock(&priv->irqlock);
+
+ if (priv->last_eof) {
+ complete(&priv->last_eof_comp);
+ priv->last_eof = false;
+ goto unlock;
+ }
+
+ channel = (ipu_rot_mode_is_irt(priv->rot_mode)) ?
+ priv->rot_out_ch : priv->out_ch;
+
+ prp_vb2_buf_done(priv, channel);
+
+ /* select new IPU buf */
+ ipu_idmac_select_buffer(channel, priv->ipu_buf_num);
+ /* toggle IPU double-buffer index */
+ priv->ipu_buf_num ^= 1;
+
+ /* bump the EOF timeout timer */
+ mod_timer(&priv->eof_timeout_timer,
+ jiffies + msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
+
+unlock:
+ spin_unlock(&priv->irqlock);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t prp_nfb4eof_interrupt(int irq, void *dev_id)
+{
+ struct prp_priv *priv = dev_id;
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+
+ spin_lock(&priv->irqlock);
+
+ /*
+ * this is not an unrecoverable error, just mark
+ * the next captured frame with vb2 error flag.
+ */
+ priv->nfb4eof = true;
+
+ v4l2_err(&ic_priv->sd, "NFB4EOF\n");
+
+ spin_unlock(&priv->irqlock);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * EOF timeout timer function.
+ */
+/*
+ * EOF timeout timer function. This is an unrecoverable condition
+ * without a stream restart.
+ */
+static void prp_eof_timeout(unsigned long data)
+{
+ struct prp_priv *priv = (struct prp_priv *)data;
+ struct imx_media_video_dev *vdev = priv->vdev;
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+
+ v4l2_err(&ic_priv->sd, "EOF timeout\n");
+
+ /* signal a fatal error to capture device */
+ imx_media_capture_device_error(vdev);
+}
+
+static void prp_setup_vb2_buf(struct prp_priv *priv, dma_addr_t *phys)
+{
+ struct imx_media_video_dev *vdev = priv->vdev;
+ struct imx_media_buffer *buf;
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ buf = imx_media_capture_device_next_buf(vdev);
+ if (buf) {
+ priv->active_vb2_buf[i] = buf;
+ phys[i] = vb2_dma_contig_plane_dma_addr(
+ &buf->vbuf.vb2_buf, 0);
+ } else {
+ priv->active_vb2_buf[i] = NULL;
+ phys[i] = priv->underrun_buf.phys;
+ }
+ }
+}
+
+static void prp_unsetup_vb2_buf(struct prp_priv *priv,
+ enum vb2_buffer_state return_status)
+{
+ struct imx_media_buffer *buf;
+ int i;
+
+ /* return any remaining active frames with return_status */
+ for (i = 0; i < 2; i++) {
+ buf = priv->active_vb2_buf[i];
+ if (buf) {
+ struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
+
+ vb->timestamp = ktime_get_ns();
+ vb2_buffer_done(vb, return_status);
+ }
+ }
+}
+
+static int prp_setup_channel(struct prp_priv *priv,
+ struct ipuv3_channel *channel,
+ enum ipu_rotate_mode rot_mode,
+ dma_addr_t addr0, dma_addr_t addr1,
+ bool rot_swap_width_height)
+{
+ struct imx_media_video_dev *vdev = priv->vdev;
+ const struct imx_media_pixfmt *outcc;
+ struct v4l2_mbus_framefmt *infmt;
+ unsigned int burst_size;
+ struct ipu_image image;
+ int ret;
+
+ infmt = &priv->format_mbus[PRPENCVF_SINK_PAD];
+ outcc = vdev->cc;
+
+ ipu_cpmem_zero(channel);
+
+ memset(&image, 0, sizeof(image));
+ image.pix = vdev->fmt.fmt.pix;
+ image.rect.width = image.pix.width;
+ image.rect.height = image.pix.height;
+
+ if (rot_swap_width_height) {
+ swap(image.pix.width, image.pix.height);
+ swap(image.rect.width, image.rect.height);
+ /* recalc stride using swapped width */
+ image.pix.bytesperline = outcc->planar ?
+ image.pix.width :
+ (image.pix.width * outcc->bpp) >> 3;
+ }
+
+ image.phys0 = addr0;
+ image.phys1 = addr1;
+
+ ret = ipu_cpmem_set_image(channel, &image);
+ if (ret)
+ return ret;
+
+ if (channel == priv->rot_in_ch ||
+ channel == priv->rot_out_ch) {
+ burst_size = 8;
+ ipu_cpmem_set_block_mode(channel);
+ } else {
+ burst_size = (image.pix.width & 0xf) ? 8 : 16;
+ }
+
+ ipu_cpmem_set_burstsize(channel, burst_size);
+
+ if (rot_mode)
+ ipu_cpmem_set_rotation(channel, rot_mode);
+
+ if (image.pix.field == V4L2_FIELD_NONE &&
+ V4L2_FIELD_HAS_BOTH(infmt->field) &&
+ channel == priv->out_ch)
+ ipu_cpmem_interlaced_scan(channel, image.pix.bytesperline);
+
+ ret = ipu_ic_task_idma_init(priv->ic, channel,
+ image.pix.width, image.pix.height,
+ burst_size, rot_mode);
+ if (ret)
+ return ret;
+
+ ipu_cpmem_set_axi_id(channel, 1);
+
+ ipu_idmac_set_double_buffer(channel, true);
+
+ return 0;
+}
+
+static int prp_setup_rotation(struct prp_priv *priv)
+{
+ struct imx_media_video_dev *vdev = priv->vdev;
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+ const struct imx_media_pixfmt *outcc, *incc;
+ struct v4l2_mbus_framefmt *infmt;
+ struct v4l2_pix_format *outfmt;
+ dma_addr_t phys[2];
+ int ret;
+
+ infmt = &priv->format_mbus[PRPENCVF_SINK_PAD];
+ outfmt = &vdev->fmt.fmt.pix;
+ incc = priv->cc[PRPENCVF_SINK_PAD];
+ outcc = vdev->cc;
+
+ ret = imx_media_alloc_dma_buf(priv->md, &priv->rot_buf[0],
+ outfmt->sizeimage);
+ if (ret) {
+ v4l2_err(&ic_priv->sd, "failed to alloc rot_buf[0], %d\n", ret);
+ return ret;
+ }
+ ret = imx_media_alloc_dma_buf(priv->md, &priv->rot_buf[1],
+ outfmt->sizeimage);
+ if (ret) {
+ v4l2_err(&ic_priv->sd, "failed to alloc rot_buf[1], %d\n", ret);
+ goto free_rot0;
+ }
+
+ ret = ipu_ic_task_init(priv->ic,
+ infmt->width, infmt->height,
+ outfmt->height, outfmt->width,
+ incc->cs, outcc->cs);
+ if (ret) {
+ v4l2_err(&ic_priv->sd, "ipu_ic_task_init failed, %d\n", ret);
+ goto free_rot1;
+ }
+
+ /* init the IC-PRP-->MEM IDMAC channel */
+ ret = prp_setup_channel(priv, priv->out_ch, IPU_ROTATE_NONE,
+ priv->rot_buf[0].phys, priv->rot_buf[1].phys,
+ true);
+ if (ret) {
+ v4l2_err(&ic_priv->sd,
+ "prp_setup_channel(out_ch) failed, %d\n", ret);
+ goto free_rot1;
+ }
+
+ /* init the MEM-->IC-PRP ROT IDMAC channel */
+ ret = prp_setup_channel(priv, priv->rot_in_ch, priv->rot_mode,
+ priv->rot_buf[0].phys, priv->rot_buf[1].phys,
+ true);
+ if (ret) {
+ v4l2_err(&ic_priv->sd,
+ "prp_setup_channel(rot_in_ch) failed, %d\n", ret);
+ goto free_rot1;
+ }
+
+ prp_setup_vb2_buf(priv, phys);
+
+ /* init the destination IC-PRP ROT-->MEM IDMAC channel */
+ ret = prp_setup_channel(priv, priv->rot_out_ch, IPU_ROTATE_NONE,
+ phys[0], phys[1],
+ false);
+ if (ret) {
+ v4l2_err(&ic_priv->sd,
+ "prp_setup_channel(rot_out_ch) failed, %d\n", ret);
+ goto unsetup_vb2;
+ }
+
+ /* now link IC-PRP-->MEM to MEM-->IC-PRP ROT */
+ ipu_idmac_link(priv->out_ch, priv->rot_in_ch);
+
+ /* enable the IC */
+ ipu_ic_enable(priv->ic);
+
+ /* set buffers ready */
+ ipu_idmac_select_buffer(priv->out_ch, 0);
+ ipu_idmac_select_buffer(priv->out_ch, 1);
+ ipu_idmac_select_buffer(priv->rot_out_ch, 0);
+ ipu_idmac_select_buffer(priv->rot_out_ch, 1);
+
+ /* enable the channels */
+ ipu_idmac_enable_channel(priv->out_ch);
+ ipu_idmac_enable_channel(priv->rot_in_ch);
+ ipu_idmac_enable_channel(priv->rot_out_ch);
+
+ /* and finally enable the IC PRP task */
+ ipu_ic_task_enable(priv->ic);
+
+ return 0;
+
+unsetup_vb2:
+ prp_unsetup_vb2_buf(priv, VB2_BUF_STATE_QUEUED);
+free_rot1:
+ imx_media_free_dma_buf(priv->md, &priv->rot_buf[1]);
+free_rot0:
+ imx_media_free_dma_buf(priv->md, &priv->rot_buf[0]);
+ return ret;
+}
+
+static void prp_unsetup_rotation(struct prp_priv *priv)
+{
+ ipu_ic_task_disable(priv->ic);
+
+ ipu_idmac_disable_channel(priv->out_ch);
+ ipu_idmac_disable_channel(priv->rot_in_ch);
+ ipu_idmac_disable_channel(priv->rot_out_ch);
+
+ ipu_idmac_unlink(priv->out_ch, priv->rot_in_ch);
+
+ ipu_ic_disable(priv->ic);
+
+ imx_media_free_dma_buf(priv->md, &priv->rot_buf[0]);
+ imx_media_free_dma_buf(priv->md, &priv->rot_buf[1]);
+}
+
+static int prp_setup_norotation(struct prp_priv *priv)
+{
+ struct imx_media_video_dev *vdev = priv->vdev;
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+ const struct imx_media_pixfmt *outcc, *incc;
+ struct v4l2_mbus_framefmt *infmt;
+ struct v4l2_pix_format *outfmt;
+ dma_addr_t phys[2];
+ int ret;
+
+ infmt = &priv->format_mbus[PRPENCVF_SINK_PAD];
+ outfmt = &vdev->fmt.fmt.pix;
+ incc = priv->cc[PRPENCVF_SINK_PAD];
+ outcc = vdev->cc;
+
+ ret = ipu_ic_task_init(priv->ic,
+ infmt->width, infmt->height,
+ outfmt->width, outfmt->height,
+ incc->cs, outcc->cs);
+ if (ret) {
+ v4l2_err(&ic_priv->sd, "ipu_ic_task_init failed, %d\n", ret);
+ return ret;
+ }
+
+ prp_setup_vb2_buf(priv, phys);
+
+ /* init the IC PRP-->MEM IDMAC channel */
+ ret = prp_setup_channel(priv, priv->out_ch, priv->rot_mode,
+ phys[0], phys[1], false);
+ if (ret) {
+ v4l2_err(&ic_priv->sd,
+ "prp_setup_channel(out_ch) failed, %d\n", ret);
+ goto unsetup_vb2;
+ }
+
+ ipu_cpmem_dump(priv->out_ch);
+ ipu_ic_dump(priv->ic);
+ ipu_dump(priv->ipu);
+
+ ipu_ic_enable(priv->ic);
+
+ /* set buffers ready */
+ ipu_idmac_select_buffer(priv->out_ch, 0);
+ ipu_idmac_select_buffer(priv->out_ch, 1);
+
+ /* enable the channels */
+ ipu_idmac_enable_channel(priv->out_ch);
+
+ /* enable the IC task */
+ ipu_ic_task_enable(priv->ic);
+
+ return 0;
+
+unsetup_vb2:
+ prp_unsetup_vb2_buf(priv, VB2_BUF_STATE_QUEUED);
+ return ret;
+}
+
+static void prp_unsetup_norotation(struct prp_priv *priv)
+{
+ ipu_ic_task_disable(priv->ic);
+ ipu_idmac_disable_channel(priv->out_ch);
+ ipu_ic_disable(priv->ic);
+}
+
+static void prp_unsetup(struct prp_priv *priv,
+ enum vb2_buffer_state state)
+{
+ if (ipu_rot_mode_is_irt(priv->rot_mode))
+ prp_unsetup_rotation(priv);
+ else
+ prp_unsetup_norotation(priv);
+
+ prp_unsetup_vb2_buf(priv, state);
+}
+
+static int prp_start(struct prp_priv *priv)
+{
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+ struct imx_media_video_dev *vdev = priv->vdev;
+ struct v4l2_pix_format *outfmt;
+ int ret;
+
+ ret = prp_get_ipu_resources(priv);
+ if (ret)
+ return ret;
+
+ outfmt = &vdev->fmt.fmt.pix;
+
+ ret = imx_media_alloc_dma_buf(priv->md, &priv->underrun_buf,
+ outfmt->sizeimage);
+ if (ret)
+ goto out_put_ipu;
+
+ priv->ipu_buf_num = 0;
+
+ /* init EOF completion waitq */
+ init_completion(&priv->last_eof_comp);
+ priv->last_eof = false;
+ priv->nfb4eof = false;
+
+ if (ipu_rot_mode_is_irt(priv->rot_mode))
+ ret = prp_setup_rotation(priv);
+ else
+ ret = prp_setup_norotation(priv);
+ if (ret)
+ goto out_free_underrun;
+
+ priv->nfb4eof_irq = ipu_idmac_channel_irq(priv->ipu,
+ priv->out_ch,
+ IPU_IRQ_NFB4EOF);
+ ret = devm_request_irq(ic_priv->dev, priv->nfb4eof_irq,
+ prp_nfb4eof_interrupt, 0,
+ "imx-ic-prp-nfb4eof", priv);
+ if (ret) {
+ v4l2_err(&ic_priv->sd,
+ "Error registering NFB4EOF irq: %d\n", ret);
+ goto out_unsetup;
+ }
+
+ if (ipu_rot_mode_is_irt(priv->rot_mode))
+ priv->eof_irq = ipu_idmac_channel_irq(
+ priv->ipu, priv->rot_out_ch, IPU_IRQ_EOF);
+ else
+ priv->eof_irq = ipu_idmac_channel_irq(
+ priv->ipu, priv->out_ch, IPU_IRQ_EOF);
+
+ ret = devm_request_irq(ic_priv->dev, priv->eof_irq,
+ prp_eof_interrupt, 0,
+ "imx-ic-prp-eof", priv);
+ if (ret) {
+ v4l2_err(&ic_priv->sd,
+ "Error registering eof irq: %d\n", ret);
+ goto out_free_nfb4eof_irq;
+ }
+
+ /* start the EOF timeout timer */
+ mod_timer(&priv->eof_timeout_timer,
+ jiffies + msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
+
+ return 0;
+
+out_free_nfb4eof_irq:
+ devm_free_irq(ic_priv->dev, priv->nfb4eof_irq, priv);
+out_unsetup:
+ prp_unsetup(priv, VB2_BUF_STATE_QUEUED);
+out_free_underrun:
+ imx_media_free_dma_buf(priv->md, &priv->underrun_buf);
+out_put_ipu:
+ prp_put_ipu_resources(priv);
+ return ret;
+}
+
+static void prp_stop(struct prp_priv *priv)
+{
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+ unsigned long flags;
+ int ret;
+
+ /* mark next EOF interrupt as the last before stream off */
+ spin_lock_irqsave(&priv->irqlock, flags);
+ priv->last_eof = true;
+ spin_unlock_irqrestore(&priv->irqlock, flags);
+
+ /*
+ * and then wait for interrupt handler to mark completion.
+ */
+ ret = wait_for_completion_timeout(
+ &priv->last_eof_comp,
+ msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
+ if (ret == 0)
+ v4l2_warn(&ic_priv->sd, "wait last EOF timeout\n");
+
+ devm_free_irq(ic_priv->dev, priv->eof_irq, priv);
+ devm_free_irq(ic_priv->dev, priv->nfb4eof_irq, priv);
+
+ prp_unsetup(priv, VB2_BUF_STATE_ERROR);
+
+ imx_media_free_dma_buf(priv->md, &priv->underrun_buf);
+
+ /* cancel the EOF timeout timer */
+ del_timer_sync(&priv->eof_timeout_timer);
+
+ prp_put_ipu_resources(priv);
+}
+
+static struct v4l2_mbus_framefmt *
+__prp_get_fmt(struct prp_priv *priv, struct v4l2_subdev_pad_config *cfg,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+
+ if (which == V4L2_SUBDEV_FORMAT_TRY)
+ return v4l2_subdev_get_try_format(&ic_priv->sd, cfg, pad);
+ else
+ return &priv->format_mbus[pad];
+}
+
+/*
+ * Applies IC resizer and IDMAC alignment restrictions to output
+ * rectangle given the input rectangle, and depending on given
+ * rotation mode.
+ *
+ * The IC resizer cannot downsize more than 4:1. Note also that
+ * for 90 or 270 rotation, _both_ output width and height must
+ * be aligned by W_ALIGN_SRC, because the intermediate rotation
+ * buffer swaps output width/height, and the final output buffer
+ * does not.
+ *
+ * Returns true if the output rectangle was modified.
+ */
+static bool prp_bound_align_output(struct v4l2_mbus_framefmt *outfmt,
+ struct v4l2_mbus_framefmt *infmt,
+ enum ipu_rotate_mode rot_mode)
+{
+ u32 orig_width = outfmt->width;
+ u32 orig_height = outfmt->height;
+
+ if (ipu_rot_mode_is_irt(rot_mode))
+ v4l_bound_align_image(&outfmt->width,
+ infmt->height / 4, MAX_H_SRC,
+ W_ALIGN_SRC,
+ &outfmt->height,
+ infmt->width / 4, MAX_W_SRC,
+ W_ALIGN_SRC, S_ALIGN);
+ else
+ v4l_bound_align_image(&outfmt->width,
+ infmt->width / 4, MAX_W_SRC,
+ W_ALIGN_SRC,
+ &outfmt->height,
+ infmt->height / 4, MAX_H_SRC,
+ H_ALIGN_SRC, S_ALIGN);
+
+ return outfmt->width != orig_width || outfmt->height != orig_height;
+}
+
+/*
+ * V4L2 subdev operations.
+ */
+
+static int prp_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->pad >= PRPENCVF_NUM_PADS)
+ return -EINVAL;
+
+ return imx_media_enum_ipu_format(&code->code, code->index, CS_SEL_ANY);
+}
+
+static int prp_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *sdformat)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+ struct v4l2_mbus_framefmt *fmt;
+ int ret = 0;
+
+ if (sdformat->pad >= PRPENCVF_NUM_PADS)
+ return -EINVAL;
+
+ mutex_lock(&priv->lock);
+
+ fmt = __prp_get_fmt(priv, cfg, sdformat->pad, sdformat->which);
+ if (!fmt) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ sdformat->format = *fmt;
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static void prp_try_fmt(struct prp_priv *priv,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *sdformat,
+ const struct imx_media_pixfmt **cc)
+{
+ *cc = imx_media_find_ipu_format(sdformat->format.code, CS_SEL_ANY);
+ if (!*cc) {
+ u32 code;
+
+ imx_media_enum_ipu_format(&code, 0, CS_SEL_ANY);
+ *cc = imx_media_find_ipu_format(code, CS_SEL_ANY);
+ sdformat->format.code = (*cc)->codes[0];
+ }
+
+ if (sdformat->pad == PRPENCVF_SRC_PAD) {
+ struct v4l2_mbus_framefmt *infmt =
+ __prp_get_fmt(priv, cfg, PRPENCVF_SINK_PAD,
+ sdformat->which);
+
+ if (sdformat->format.field != V4L2_FIELD_NONE)
+ sdformat->format.field = infmt->field;
+
+ prp_bound_align_output(&sdformat->format, infmt,
+ priv->rot_mode);
+ } else {
+ v4l_bound_align_image(&sdformat->format.width,
+ MIN_W_SINK, MAX_W_SINK, W_ALIGN_SINK,
+ &sdformat->format.height,
+ MIN_H_SINK, MAX_H_SINK, H_ALIGN_SINK,
+ S_ALIGN);
+ }
+}
+
+static int prp_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *sdformat)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+ struct imx_media_video_dev *vdev = priv->vdev;
+ const struct imx_media_pixfmt *cc;
+ struct v4l2_pix_format vdev_fmt;
+ struct v4l2_mbus_framefmt *fmt;
+ int ret = 0;
+
+ if (sdformat->pad >= PRPENCVF_NUM_PADS)
+ return -EINVAL;
+
+ mutex_lock(&priv->lock);
+
+ if (priv->stream_count > 0) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ prp_try_fmt(priv, cfg, sdformat, &cc);
+
+ fmt = __prp_get_fmt(priv, cfg, sdformat->pad, sdformat->which);
+ *fmt = sdformat->format;
+
+ /* propagate a default format to source pad */
+ if (sdformat->pad == PRPENCVF_SINK_PAD) {
+ const struct imx_media_pixfmt *outcc;
+ struct v4l2_mbus_framefmt *outfmt;
+ struct v4l2_subdev_format format;
+
+ format.pad = PRPENCVF_SRC_PAD;
+ format.which = sdformat->which;
+ format.format = sdformat->format;
+ prp_try_fmt(priv, cfg, &format, &outcc);
+
+ outfmt = __prp_get_fmt(priv, cfg, PRPENCVF_SRC_PAD,
+ sdformat->which);
+ *outfmt = format.format;
+ if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
+ priv->cc[PRPENCVF_SRC_PAD] = outcc;
+ }
+
+ if (sdformat->which == V4L2_SUBDEV_FORMAT_TRY)
+ goto out;
+
+ priv->cc[sdformat->pad] = cc;
+
+ /* propagate output pad format to capture device */
+ imx_media_mbus_fmt_to_pix_fmt(&vdev_fmt,
+ &priv->format_mbus[PRPENCVF_SRC_PAD],
+ priv->cc[PRPENCVF_SRC_PAD]);
+ mutex_unlock(&priv->lock);
+ imx_media_capture_device_set_format(vdev, &vdev_fmt);
+
+ return 0;
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static int prp_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+ struct v4l2_subdev_format format = {0};
+ const struct imx_media_pixfmt *cc;
+ int ret = 0;
+
+ if (fse->pad >= PRPENCVF_NUM_PADS || fse->index != 0)
+ return -EINVAL;
+
+ mutex_lock(&priv->lock);
+
+ format.pad = fse->pad;
+ format.which = fse->which;
+ format.format.code = fse->code;
+ format.format.width = 1;
+ format.format.height = 1;
+ prp_try_fmt(priv, cfg, &format, &cc);
+ fse->min_width = format.format.width;
+ fse->min_height = format.format.height;
+
+ if (format.format.code != fse->code) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ format.format.code = fse->code;
+ format.format.width = -1;
+ format.format.height = -1;
+ prp_try_fmt(priv, cfg, &format, &cc);
+ fse->max_width = format.format.width;
+ fse->max_height = format.format.height;
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static int prp_link_setup(struct media_entity *entity,
+ const struct media_pad *local,
+ const struct media_pad *remote, u32 flags)
+{
+ struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
+ struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
+ struct prp_priv *priv = ic_priv->task_priv;
+ struct v4l2_subdev *remote_sd;
+ int ret = 0;
+
+ dev_dbg(ic_priv->dev, "link setup %s -> %s", remote->entity->name,
+ local->entity->name);
+
+ mutex_lock(&priv->lock);
+
+ if (local->flags & MEDIA_PAD_FL_SINK) {
+ if (!is_media_entity_v4l2_subdev(remote->entity)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ remote_sd = media_entity_to_v4l2_subdev(remote->entity);
+
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (priv->src_sd) {
+ ret = -EBUSY;
+ goto out;
+ }
+ priv->src_sd = remote_sd;
+ } else {
+ priv->src_sd = NULL;
+ }
+
+ goto out;
+ }
+
+ /* this is the source pad */
+
+ /* the remote must be the device node */
+ if (!is_media_entity_v4l2_video_device(remote->entity)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (priv->sink) {
+ ret = -EBUSY;
+ goto out;
+ }
+ } else {
+ priv->sink = NULL;
+ goto out;
+ }
+
+ priv->sink = remote->entity;
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static int prp_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct prp_priv *priv = container_of(ctrl->handler,
+ struct prp_priv, ctrl_hdlr);
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+ enum ipu_rotate_mode rot_mode;
+ int rotation, ret = 0;
+ bool hflip, vflip;
+
+ mutex_lock(&priv->lock);
+
+ rotation = priv->rotation;
+ hflip = priv->hflip;
+ vflip = priv->vflip;
+
+ switch (ctrl->id) {
+ case V4L2_CID_HFLIP:
+ hflip = (ctrl->val == 1);
+ break;
+ case V4L2_CID_VFLIP:
+ vflip = (ctrl->val == 1);
+ break;
+ case V4L2_CID_ROTATE:
+ rotation = ctrl->val;
+ break;
+ default:
+ v4l2_err(&ic_priv->sd, "Invalid control\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = ipu_degrees_to_rot_mode(&rot_mode, rotation, hflip, vflip);
+ if (ret)
+ goto out;
+
+ if (rot_mode != priv->rot_mode) {
+ struct v4l2_mbus_framefmt outfmt, infmt;
+
+ /* can't change rotation mid-streaming */
+ if (priv->stream_count > 0) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ outfmt = priv->format_mbus[PRPENCVF_SRC_PAD];
+ infmt = priv->format_mbus[PRPENCVF_SINK_PAD];
+
+ if (prp_bound_align_output(&outfmt, &infmt, rot_mode)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ priv->rot_mode = rot_mode;
+ priv->rotation = rotation;
+ priv->hflip = hflip;
+ priv->vflip = vflip;
+ }
+
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops prp_ctrl_ops = {
+ .s_ctrl = prp_s_ctrl,
+};
+
+static int prp_init_controls(struct prp_priv *priv)
+{
+ struct imx_ic_priv *ic_priv = priv->ic_priv;
+ struct v4l2_ctrl_handler *hdlr = &priv->ctrl_hdlr;
+ int ret;
+
+ v4l2_ctrl_handler_init(hdlr, 3);
+
+ v4l2_ctrl_new_std(hdlr, &prp_ctrl_ops, V4L2_CID_HFLIP,
+ 0, 1, 1, 0);
+ v4l2_ctrl_new_std(hdlr, &prp_ctrl_ops, V4L2_CID_VFLIP,
+ 0, 1, 1, 0);
+ v4l2_ctrl_new_std(hdlr, &prp_ctrl_ops, V4L2_CID_ROTATE,
+ 0, 270, 90, 0);
+
+ ic_priv->sd.ctrl_handler = hdlr;
+
+ if (hdlr->error) {
+ ret = hdlr->error;
+ goto out_free;
+ }
+
+ v4l2_ctrl_handler_setup(hdlr);
+ return 0;
+
+out_free:
+ v4l2_ctrl_handler_free(hdlr);
+ return ret;
+}
+
+static int prp_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct imx_ic_priv *ic_priv = v4l2_get_subdevdata(sd);
+ struct prp_priv *priv = ic_priv->task_priv;
+ int ret = 0;
+
+ mutex_lock(&priv->lock);
+
+ if (!priv->src_sd || !priv->sink) {
+ ret = -EPIPE;
+ goto out;
+ }
+
+ /*
+ * enable/disable streaming only if stream_count is
+ * going from 0 to 1 / 1 to 0.
+ */
+ if (priv->stream_count != !enable)
+ goto update_count;
+
+ dev_dbg(ic_priv->dev, "stream %s\n", enable ? "ON" : "OFF");
+
+ if (enable)
+ ret = prp_start(priv);
+ else
+ prp_stop(priv);
+ if (ret)
+ goto out;
+
+ /* start/stop upstream */
+ ret = v4l2_subdev_call(priv->src_sd, video, s_stream, enable);
+ ret = (ret && ret != -ENOIOCTLCMD) ? ret : 0;
+ if (ret) {
+ if (enable)
+ prp_stop(priv);
+ goto out;
+ }
+
+update_count:
+ priv->stream_count += enable ? 1 : -1;
+ WARN_ON(priv->stream_count < 0);
+out:
+ mutex_unlock(&priv->lock);
+ return ret;
+}
+
+static int prp_g_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+
+ if (fi->pad >= PRPENCVF_NUM_PADS)
+ return -EINVAL;
+
+ mutex_lock(&priv->lock);
+ fi->interval = priv->frame_interval;
+ mutex_unlock(&priv->lock);
+
+ return 0;
+}
+
+static int prp_s_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+
+ if (fi->pad >= PRPENCVF_NUM_PADS)
+ return -EINVAL;
+
+ /* No limits on frame interval */
+ mutex_lock(&priv->lock);
+ priv->frame_interval = fi->interval;
+ mutex_unlock(&priv->lock);
+
+ return 0;
+}
+
+/*
+ * retrieve our pads parsed from the OF graph by the media device
+ */
+static int prp_registered(struct v4l2_subdev *sd)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+ int i, ret;
+ u32 code;
+
+ /* get media device */
+ priv->md = dev_get_drvdata(sd->v4l2_dev->dev);
+
+ for (i = 0; i < PRPENCVF_NUM_PADS; i++) {
+ priv->pad[i].flags = (i == PRPENCVF_SINK_PAD) ?
+ MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
+
+ /* set a default mbus format */
+ imx_media_enum_ipu_format(&code, 0, CS_SEL_YUV);
+ ret = imx_media_init_mbus_fmt(&priv->format_mbus[i],
+ 640, 480, code, V4L2_FIELD_NONE,
+ &priv->cc[i]);
+ if (ret)
+ return ret;
+ }
+
+ /* init default frame interval */
+ priv->frame_interval.numerator = 1;
+ priv->frame_interval.denominator = 30;
+
+ ret = media_entity_pads_init(&sd->entity, PRPENCVF_NUM_PADS,
+ priv->pad);
+ if (ret)
+ return ret;
+
+ ret = imx_media_capture_device_register(priv->vdev);
+ if (ret)
+ return ret;
+
+ ret = imx_media_add_video_device(priv->md, priv->vdev);
+ if (ret)
+ goto unreg;
+
+ ret = prp_init_controls(priv);
+ if (ret)
+ goto unreg;
+
+ return 0;
+unreg:
+ imx_media_capture_device_unregister(priv->vdev);
+ return ret;
+}
+
+static void prp_unregistered(struct v4l2_subdev *sd)
+{
+ struct prp_priv *priv = sd_to_priv(sd);
+
+ imx_media_capture_device_unregister(priv->vdev);
+ v4l2_ctrl_handler_free(&priv->ctrl_hdlr);
+}
+
+static const struct v4l2_subdev_pad_ops prp_pad_ops = {
+ .enum_mbus_code = prp_enum_mbus_code,
+ .enum_frame_size = prp_enum_frame_size,
+ .get_fmt = prp_get_fmt,
+ .set_fmt = prp_set_fmt,
+};
+
+static const struct v4l2_subdev_video_ops prp_video_ops = {
+ .g_frame_interval = prp_g_frame_interval,
+ .s_frame_interval = prp_s_frame_interval,
+ .s_stream = prp_s_stream,
+};
+
+static const struct media_entity_operations prp_entity_ops = {
+ .link_setup = prp_link_setup,
+ .link_validate = v4l2_subdev_link_validate,
+};
+
+static const struct v4l2_subdev_ops prp_subdev_ops = {
+ .video = &prp_video_ops,
+ .pad = &prp_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops prp_internal_ops = {
+ .registered = prp_registered,
+ .unregistered = prp_unregistered,
+};
+
+static int prp_init(struct imx_ic_priv *ic_priv)
+{
+ struct prp_priv *priv;
+
+ priv = devm_kzalloc(ic_priv->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ ic_priv->task_priv = priv;
+ priv->ic_priv = ic_priv;
+
+ spin_lock_init(&priv->irqlock);
+ init_timer(&priv->eof_timeout_timer);
+ priv->eof_timeout_timer.data = (unsigned long)priv;
+ priv->eof_timeout_timer.function = prp_eof_timeout;
+
+ priv->vdev = imx_media_capture_device_init(&ic_priv->sd,
+ PRPENCVF_SRC_PAD);
+ if (IS_ERR(priv->vdev))
+ return PTR_ERR(priv->vdev);
+
+ mutex_init(&priv->lock);
+
+ return 0;
+}
+
+static void prp_remove(struct imx_ic_priv *ic_priv)
+{
+ struct prp_priv *priv = ic_priv->task_priv;
+
+ mutex_destroy(&priv->lock);
+ imx_media_capture_device_remove(priv->vdev);
+}
+
+struct imx_ic_ops imx_ic_prpencvf_ops = {
+ .subdev_ops = &prp_subdev_ops,
+ .internal_ops = &prp_internal_ops,
+ .entity_ops = &prp_entity_ops,
+ .init = prp_init,
+ .remove = prp_remove,
+};
projects / mirror_ubuntu-kernels.git / commitdiff