// SPDX-License-Identifier: GPL-2.0+
/*
* V4L2 Deinterlacer Subdev for Freescale i.MX5/6 SOC
*
* Copyright (c) 2017 Mentor Graphics Inc.
*/
#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"
/*
* This subdev implements two different video pipelines:
*
* CSI -> VDIC
*
* In this pipeline, the CSI sends a single interlaced field F(n-1)
* directly to the VDIC (and optionally the following field F(n)
* can be sent to memory via IDMAC channel 13). This pipeline only works
* in VDIC's high motion mode, which only requires a single field for
* processing. The other motion modes (low and medium) require three
* fields, so this pipeline does not work in those modes. Also, it is
* not clear how this pipeline can deal with the various field orders
* (sequential BT/TB, interlaced BT/TB).
*
* MEM -> CH8,9,10 -> VDIC
*
* In this pipeline, previous field F(n-1), current field F(n), and next
* field F(n+1) are transferred to the VDIC via IDMAC channels 8,9,10.
* These memory buffers can come from a video output or mem2mem device.
* All motion modes are supported by this pipeline.
*
* The "direct" CSI->VDIC pipeline requires no DMA, but it can only be
* used in high motion mode.
*/
struct vdic_priv;
struct vdic_pipeline_ops {
int (*setup)(struct vdic_priv *priv);
void (*start)(struct vdic_priv *priv);
void (*stop)(struct vdic_priv *priv);
void (*disable)(struct vdic_priv *priv);
};
/*
* Min/Max supported width and heights.
*/
#define MIN_W 32
#define MIN_H 32
#define MAX_W_VDIC 968
#define MAX_H_VDIC 2048
#define W_ALIGN 4 /* multiple of 16 pixels */
#define H_ALIGN 1 /* multiple of 2 lines */
#define S_ALIGN 1 /* multiple of 2 */
struct vdic_priv {
struct device *ipu_dev;
struct ipu_soc *ipu;
struct v4l2_subdev sd;
struct media_pad pad[VDIC_NUM_PADS];
/* lock to protect all members below */
struct mutex lock;
/* IPU units we require */
struct ipu_vdi *vdi;
int active_input_pad;
struct ipuv3_channel *vdi_in_ch_p; /* F(n-1) transfer channel */
struct ipuv3_channel *vdi_in_ch; /* F(n) transfer channel */
struct ipuv3_channel *vdi_in_ch_n; /* F(n+1) transfer channel */
/* pipeline operations */
struct vdic_pipeline_ops *ops;
/* current and previous input buffers indirect path */
struct imx_media_buffer *curr_in_buf;
struct imx_media_buffer *prev_in_buf;
/*
* translated field type, input line stride, and field size
* for indirect path
*/
u32 fieldtype;
u32 in_stride;
u32 field_size;
/* the source (a video device or subdev) */
struct media_entity *src;
/* the sink that will receive the progressive out buffers */
struct v4l2_subdev *sink_sd;
struct v4l2_mbus_framefmt format_mbus[VDIC_NUM_PADS];
const struct imx_media_pixfmt *cc[VDIC_NUM_PADS];
struct v4l2_fract frame_interval[VDIC_NUM_PADS];
/* the video device at IDMAC input pad */
struct imx_media_video_dev *vdev;
bool csi_direct; /* using direct CSI->VDIC->IC pipeline */
/* motion select control */
struct v4l2_ctrl_handler ctrl_hdlr;
enum ipu_motion_sel motion;
int stream_count;
};
static void vdic_put_ipu_resources(struct vdic_priv *priv)
{
if (priv->vdi_in_ch_p)
ipu_idmac_put(priv->vdi_in_ch_p);
priv->vdi_in_ch_p = NULL;
if (priv->vdi_in_ch)
ipu_idmac_put(priv->vdi_in_ch);
priv->vdi_in_ch = NULL;
if (priv->vdi_in_ch_n)
ipu_idmac_put(priv->vdi_in_ch_n);
priv->vdi_in_ch_n = NULL;
if (!IS_ERR_OR_NULL(priv->vdi))
ipu_vdi_put(priv->vdi);
priv->vdi = NULL;
}
static int vdic_get_ipu_resources(struct vdic_priv *priv)
{
int ret, err_chan;
struct ipuv3_channel *ch;
struct ipu_vdi *vdi;
vdi = ipu_vdi_get(priv->ipu);
if (IS_ERR(vdi)) {
v4l2_err(&priv->sd, "failed to get VDIC\n");
ret = PTR_ERR(vdi);
goto out;
}
priv->vdi = vdi;
if (!priv->csi_direct) {
ch = ipu_idmac_get(priv->ipu, IPUV3_CHANNEL_MEM_VDI_PREV);
if (IS_ERR(ch)) {
err_chan = IPUV3_CHANNEL_MEM_VDI_PREV;
ret = PTR_ERR(ch);
goto out_err_chan;
}
priv->vdi_in_ch_p = ch;
ch = ipu_idmac_get(priv->ipu, IPUV3_CHANNEL_MEM_VDI_CUR);
if (IS_ERR(ch)) {
err_chan = IPUV3_CHANNEL_MEM_VDI_CUR;
ret = PTR_ERR(ch);
goto out_err_chan;
}
priv->vdi_in_ch = ch;
ch = ipu_idmac_get(priv->ipu, IPUV3_CHANNEL_MEM_VDI_NEXT);
if (IS_ERR(ch)) {
err_chan = IPUV3_CHANNEL_MEM_VDI_NEXT;
ret = PTR_ERR(ch);
goto out_err_chan;
}
priv->vdi_in_ch_n = ch;
}
return 0;
out_err_chan:
v4l2_err(&priv->sd, "could not get IDMAC channel %u\n", err_chan);
out:
vdic_put_ipu_resources(priv);
return ret;
}
/*
* This function is currently unused, but will be called when the
* output/mem2mem device at the IDMAC input pad sends us a new
* buffer. It kicks off the IDMAC read channels to bring in the
* buffer fields from memory and begin the conversions.
*/
static void __maybe_unused prepare_vdi_in_buffers(struct vdic_priv *priv,
struct imx_media_buffer *curr)
{
dma_addr_t prev_phys, curr_phys, next_phys;
struct imx_media_buffer *prev;
struct vb2_buffer *curr_vb, *prev_vb;
u32 fs = priv->field_size;
u32 is = priv->in_stride;
/* current input buffer is now previous */
priv->prev_in_buf = priv->curr_in_buf;
priv->curr_in_buf = curr;
prev = priv->prev_in_buf ? priv->prev_in_buf : curr;
prev_vb = &prev->vbuf.vb2_buf;
curr_vb = &curr->vbuf.vb2_buf;
switch (priv->fieldtype) {
case V4L2_FIELD_SEQ_TB:
case V4L2_FIELD_SEQ_BT:
prev_phys = vb2_dma_contig_plane_dma_addr(prev_vb, 0) + fs;
curr_phys = vb2_dma_contig_plane_dma_addr(curr_vb, 0);
next_phys = vb2_dma_contig_plane_dma_addr(curr_vb, 0) + fs;
break;
case V4L2_FIELD_INTERLACED_TB:
case V4L2_FIELD_INTERLACED_BT:
case V4L2_FIELD_INTERLACED:
prev_phys = vb2_dma_contig_plane_dma_addr(prev_vb, 0) + is;
curr_phys = vb2_dma_contig_plane_dma_addr(curr_vb, 0);
next_phys = vb2_dma_contig_plane_dma_addr(curr_vb, 0) + is;
break;
default:
/*
* can't get here, priv->fieldtype can only be one of
* the above. This is to quiet smatch errors.
*/
return;
}
ipu_cpmem_set_buffer(priv->vdi_in_ch_p, 0, prev_phys);
ipu_cpmem_set_buffer(priv->vdi_in_ch, 0, curr_phys);
ipu_cpmem_set_buffer(priv->vdi_in_ch_n, 0, next_phys);
ipu_idmac_select_buffer(priv->vdi_in_ch_p, 0);
ipu_idmac_select_buffer(priv->vdi_in_ch, 0);
ipu_idmac_select_buffer(priv->vdi_in_ch_n, 0);
}
static int setup_vdi_channel(struct vdic_priv *priv,
struct ipuv3_channel *channel,
dma_addr_t phys0, dma_addr_t phys1)
{
struct imx_media_video_dev *vdev = priv->vdev;
unsigned int burst_size;
struct ipu_image image;
int ret;
ipu_cpmem_zero(channel);
memset(&image, 0, sizeof(image));
image.pix = vdev->fmt;
image.rect = vdev->compose;
/* one field to VDIC channels */
image.pix.height /= 2;
image.rect.height /= 2;
image.phys0 = phys0;
image.phys1 = phys1;
ret = ipu_cpmem_set_image(channel, &image);
if (ret)
return ret;
burst_size = (image.pix.width & 0xf) ? 8 : 16;
ipu_cpmem_set_burstsize(channel, burst_size);
ipu_cpmem_set_axi_id(channel, 1);
ipu_idmac_set_double_buffer(channel, false);
return 0;
}
static int vdic_setup_direct(struct vdic_priv *priv)
{
/* set VDIC to receive from CSI for direct path */
ipu_fsu_link(priv->ipu, IPUV3_CHANNEL_CSI_DIRECT,
IPUV3_CHANNEL_CSI_VDI_PREV);
return 0;
}
static void vdic_start_direct(struct vdic_priv *priv)
{
}
static void vdic_stop_direct(struct vdic_priv *priv)
{
}
static void vdic_disable_direct(struct vdic_priv *priv)
{
ipu_fsu_unlink(priv->ipu, IPUV3_CHANNEL_CSI_DIRECT,
IPUV3_CHANNEL_CSI_VDI_PREV);
}
static int vdic_setup_indirect(struct vdic_priv *priv)
{
struct v4l2_mbus_framefmt *infmt;
const struct imx_media_pixfmt *incc;
int in_size, ret;
infmt = &priv->format_mbus[VDIC_SINK_PAD_IDMAC];
incc = priv->cc[VDIC_SINK_PAD_IDMAC];
in_size = (infmt->width * incc->bpp * infmt->height) >> 3;
/* 1/2 full image size */
priv->field_size = in_size / 2;
priv->in_stride = incc->planar ?
infmt->width : (infmt->width * incc->bpp) >> 3;
priv->prev_in_buf = NULL;
priv->curr_in_buf = NULL;
priv->fieldtype = infmt->field;
/* init the vdi-in channels */
ret = setup_vdi_channel(priv, priv->vdi_in_ch_p, 0, 0);
if (ret)
return ret;
ret = setup_vdi_channel(priv, priv->vdi_in_ch, 0, 0);
if (ret)
return ret;
return setup_vdi_channel(priv, priv->vdi_in_ch_n, 0, 0);
}
static void vdic_start_indirect(struct vdic_priv *priv)
{
/* enable the channels */
ipu_idmac_enable_channel(priv->vdi_in_ch_p);
ipu_idmac_enable_channel(priv->vdi_in_ch);
ipu_idmac_enable_channel(priv->vdi_in_ch_n);
}
static void vdic_stop_indirect(struct vdic_priv *priv)
{
/* disable channels */
ipu_idmac_disable_channel(priv->vdi_in_ch_p);
ipu_idmac_disable_channel(priv->vdi_in_ch);
ipu_idmac_disable_channel(priv->vdi_in_ch_n);
}
static void vdic_disable_indirect(struct vdic_priv *priv)
{
}
static struct vdic_pipeline_ops direct_ops = {
.setup = vdic_setup_direct,
.start = vdic_start_direct,
.stop = vdic_stop_direct,
.disable = vdic_disable_direct,
};
static struct vdic_pipeline_ops indirect_ops = {
.setup = vdic_setup_indirect,
.start = vdic_start_indirect,
.stop = vdic_stop_indirect,
.disable = vdic_disable_indirect,
};
static int vdic_start(struct vdic_priv *priv)
{
struct v4l2_mbus_framefmt *infmt;
int ret;
infmt = &priv->format_mbus[priv->active_input_pad];
priv->ops = priv->csi_direct ? &direct_ops : &indirect_ops;
ret = vdic_get_ipu_resources(priv);
if (ret)
return ret;
/*
* init the VDIC.
*
* note we don't give infmt->code to ipu_vdi_setup(). The VDIC
* only supports 4:2:2 or 4:2:0, and this subdev will only
* negotiate 4:2:2 at its sink pads.
*/
ipu_vdi_setup(priv->vdi, MEDIA_BUS_FMT_UYVY8_2X8,
infmt->width, infmt->height);
ipu_vdi_set_field_order(priv->vdi, V4L2_STD_UNKNOWN, infmt->field);
ipu_vdi_set_motion(priv->vdi, priv->motion);
ret = priv->ops->setup(priv);
if (ret)
goto out_put_ipu;
ipu_vdi_enable(priv->vdi);
priv->ops->start(priv);
return 0;
out_put_ipu:
vdic_put_ipu_resources(priv);
return ret;
}
static void vdic_stop(struct vdic_priv *priv)
{
priv->ops->stop(priv);
ipu_vdi_disable(priv->vdi);
priv->ops->disable(priv);
vdic_put_ipu_resources(priv);
}
/*
* V4L2 subdev operations.
*/
static int vdic_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct vdic_priv *priv = container_of(ctrl->handler,
struct vdic_priv, ctrl_hdlr);
enum ipu_motion_sel motion;
int ret = 0;
mutex_lock(&priv->lock);
switch (ctrl->id) {
case V4L2_CID_DEINTERLACING_MODE:
motion = ctrl->val;
if (motion != priv->motion) {
/* can't change motion control mid-streaming */
if (priv->stream_count > 0) {
ret = -EBUSY;
goto out;
}
priv->motion = motion;
}
break;
default:
v4l2_err(&priv->sd, "Invalid control\n");
ret = -EINVAL;
}
out:
mutex_unlock(&priv->lock);
return ret;
}
static const struct v4l2_ctrl_ops vdic_ctrl_ops = {
.s_ctrl = vdic_s_ctrl,
};
static const char * const vdic_ctrl_motion_menu[] = {
"No Motion Compensation",
"Low Motion",
"Medium Motion",
"High Motion",
};
static int vdic_init_controls(struct vdic_priv *priv)
{
struct v4l2_ctrl_handler *hdlr = &priv->ctrl_hdlr;
int ret;
v4l2_ctrl_handler_init(hdlr, 1);
v4l2_ctrl_new_std_menu_items(hdlr, &vdic_ctrl_ops,
V4L2_CID_DEINTERLACING_MODE,
HIGH_MOTION, 0, HIGH_MOTION,
vdic_ctrl_motion_menu);
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 vdic_s_stream(struct v4l2_subdev *sd, int enable)
{
struct vdic_priv *priv = v4l2_get_subdevdata(sd);
struct v4l2_subdev *src_sd = NULL;
int ret = 0;
mutex_lock(&priv->lock);
if (!priv->src || !priv->sink_sd) {
ret = -EPIPE;
goto out;
}
if (priv->csi_direct)
src_sd = media_entity_to_v4l2_subdev(priv->src);
/*
* 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(priv->ipu_dev, "%s: stream %s\n", sd->name,
enable ? "ON" : "OFF");
if (enable)
ret = vdic_start(priv);
else
vdic_stop(priv);
if (ret)
goto out;
if (src_sd) {
/* start/stop upstream */
ret = v4l2_subdev_call(src_sd, video, s_stream, enable);
ret = (ret && ret != -ENOIOCTLCMD) ? ret : 0;
if (ret) {
if (enable)
vdic_stop(priv);
goto out;
}
}
update_count:
priv->stream_count += enable ? 1 : -1;
if (priv->stream_count < 0)
priv->stream_count = 0;
out:
mutex_unlock(&priv->lock);
return ret;
}
static struct v4l2_mbus_framefmt *
__vdic_get_fmt(struct vdic_priv *priv, struct v4l2_subdev_state *sd_state,
unsigned int pad, enum v4l2_subdev_format_whence which)
{
if (which == V4L2_SUBDEV_FORMAT_TRY)
return v4l2_subdev_state_get_format(sd_state, pad);
else
return &priv->format_mbus[pad];
}
static int vdic_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->pad >= VDIC_NUM_PADS)
return -EINVAL;
return imx_media_enum_ipu_formats(&code->code, code->index,
PIXFMT_SEL_YUV);
}
static int vdic_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *sdformat)
{
struct vdic_priv *priv = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *fmt;
int ret = 0;
if (sdformat->pad >= VDIC_NUM_PADS)
return -EINVAL;
mutex_lock(&priv->lock);
fmt = __vdic_get_fmt(priv, sd_state, sdformat->pad, sdformat->which);
if (!fmt) {
ret = -EINVAL;
goto out;
}
sdformat->format = *fmt;
out:
mutex_unlock(&priv->lock);
return ret;
}
static void vdic_try_fmt(struct vdic_priv *priv,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *sdformat,
const struct imx_media_pixfmt **cc)
{
struct v4l2_mbus_framefmt *infmt;
*cc = imx_media_find_ipu_format(sdformat->format.code,
PIXFMT_SEL_YUV);
if (!*cc) {
u32 code;
imx_media_enum_ipu_formats(&code, 0, PIXFMT_SEL_YUV);
*cc = imx_media_find_ipu_format(code, PIXFMT_SEL_YUV);
sdformat->format.code = (*cc)->codes[0];
}
infmt = __vdic_get_fmt(priv, sd_state, priv->active_input_pad,
sdformat->which);
switch (sdformat->pad) {
case VDIC_SRC_PAD_DIRECT:
sdformat->format = *infmt;
/* output is always progressive! */
sdformat->format.field = V4L2_FIELD_NONE;
break;
case VDIC_SINK_PAD_DIRECT:
case VDIC_SINK_PAD_IDMAC:
v4l_bound_align_image(&sdformat->format.width,
MIN_W, MAX_W_VDIC, W_ALIGN,
&sdformat->format.height,
MIN_H, MAX_H_VDIC, H_ALIGN, S_ALIGN);
/* input must be interlaced! Choose SEQ_TB if not */
if (!V4L2_FIELD_HAS_BOTH(sdformat->format.field))
sdformat->format.field = V4L2_FIELD_SEQ_TB;
break;
}
imx_media_try_colorimetry(&sdformat->format, true);
}
static int vdic_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *sdformat)
{
struct vdic_priv *priv = v4l2_get_subdevdata(sd);
const struct imx_media_pixfmt *cc;
struct v4l2_mbus_framefmt *fmt;
int ret = 0;
if (sdformat->pad >= VDIC_NUM_PADS)
return -EINVAL;
mutex_lock(&priv->lock);
if (priv->stream_count > 0) {
ret = -EBUSY;
goto out;
}
vdic_try_fmt(priv, sd_state, sdformat, &cc);
fmt = __vdic_get_fmt(priv, sd_state, sdformat->pad, sdformat->which);
*fmt = sdformat->format;
/* propagate format to source pad */
if (sdformat->pad == VDIC_SINK_PAD_DIRECT ||
sdformat->pad == VDIC_SINK_PAD_IDMAC) {
const struct imx_media_pixfmt *outcc;
struct v4l2_mbus_framefmt *outfmt;
struct v4l2_subdev_format format;
format.pad = VDIC_SRC_PAD_DIRECT;
format.which = sdformat->which;
format.format = sdformat->format;
vdic_try_fmt(priv, sd_state, &format, &outcc);
outfmt = __vdic_get_fmt(priv, sd_state, VDIC_SRC_PAD_DIRECT,
sdformat->which);
*outfmt = format.format;
if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
priv->cc[VDIC_SRC_PAD_DIRECT] = outcc;
}
if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
priv->cc[sdformat->pad] = cc;
out:
mutex_unlock(&priv->lock);
return ret;
}
static int vdic_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 vdic_priv *priv = v4l2_get_subdevdata(sd);
struct v4l2_subdev *remote_sd;
int ret = 0;
dev_dbg(priv->ipu_dev, "%s: link setup %s -> %s",
sd->name, remote->entity->name, local->entity->name);
mutex_lock(&priv->lock);
if (local->flags & MEDIA_PAD_FL_SOURCE) {
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->sink_sd) {
ret = -EBUSY;
goto out;
}
priv->sink_sd = remote_sd;
} else {
priv->sink_sd = NULL;
}
goto out;
}
/* this is a sink pad */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (priv->src) {
ret = -EBUSY;
goto out;
}
} else {
priv->src = NULL;
goto out;
}
if (local->index == VDIC_SINK_PAD_IDMAC) {
struct imx_media_video_dev *vdev = priv->vdev;
if (!is_media_entity_v4l2_video_device(remote->entity)) {
ret = -EINVAL;
goto out;
}
if (!vdev) {
ret = -ENODEV;
goto out;
}
priv->csi_direct = false;
} else {
if (!is_media_entity_v4l2_subdev(remote->entity)) {
ret = -EINVAL;
goto out;
}
remote_sd = media_entity_to_v4l2_subdev(remote->entity);
/* direct pad must connect to a CSI */
if (!(remote_sd->grp_id & IMX_MEDIA_GRP_ID_IPU_CSI) ||
remote->index != CSI_SRC_PAD_DIRECT) {
ret = -EINVAL;
goto out;
}
priv->csi_direct = true;
}
priv->src = remote->entity;
/* record which input pad is now active */
priv->active_input_pad = local->index;
out:
mutex_unlock(&priv->lock);
return ret;
}
static int vdic_link_validate(struct v4l2_subdev *sd,
struct media_link *link,
struct v4l2_subdev_format *source_fmt,
struct v4l2_subdev_format *sink_fmt)
{
struct vdic_priv *priv = v4l2_get_subdevdata(sd);
int ret;
ret = v4l2_subdev_link_validate_default(sd, link,
source_fmt, sink_fmt);
if (ret)
return ret;
mutex_lock(&priv->lock);
if (priv->csi_direct && priv->motion != HIGH_MOTION) {
v4l2_err(&priv->sd,
"direct CSI pipeline requires high motion\n");
ret = -EINVAL;
}
mutex_unlock(&priv->lock);
return ret;
}
static int vdic_get_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval *fi)
{
struct vdic_priv *priv = v4l2_get_subdevdata(sd);
/*
* FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
* subdev active state API.
*/
if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
return -EINVAL;
if (fi->pad >= VDIC_NUM_PADS)
return -EINVAL;
mutex_lock(&priv->lock);
fi->interval = priv->frame_interval[fi->pad];
mutex_unlock(&priv->lock);
return 0;
}
static int vdic_set_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval *fi)
{
struct vdic_priv *priv = v4l2_get_subdevdata(sd);
struct v4l2_fract *input_fi, *output_fi;
int ret = 0;
/*
* FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
* subdev active state API.
*/
if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
return -EINVAL;
mutex_lock(&priv->lock);
input_fi = &priv->frame_interval[priv->active_input_pad];
output_fi = &priv->frame_interval[VDIC_SRC_PAD_DIRECT];
switch (fi->pad) {
case VDIC_SINK_PAD_DIRECT:
case VDIC_SINK_PAD_IDMAC:
/* No limits on valid input frame intervals */
if (fi->interval.numerator == 0 ||
fi->interval.denominator == 0)
fi->interval = priv->frame_interval[fi->pad];
/* Reset output interval */
*output_fi = fi->interval;
if (priv->csi_direct)
output_fi->denominator *= 2;
break;
case VDIC_SRC_PAD_DIRECT:
/*
* frame rate at output pad is double input
* rate when using direct CSI->VDIC pipeline.
*
* TODO: implement VDIC frame skipping
*/
fi->interval = *input_fi;
if (priv->csi_direct)
fi->interval.denominator *= 2;
break;
default:
ret = -EINVAL;
goto out;
}
priv->frame_interval[fi->pad] = fi->interval;
out:
mutex_unlock(&priv->lock);
return ret;
}
static int vdic_registered(struct v4l2_subdev *sd)
{
struct vdic_priv *priv = v4l2_get_subdevdata(sd);
int i, ret;
u32 code;
for (i = 0; i < VDIC_NUM_PADS; i++) {
code = 0;
if (i != VDIC_SINK_PAD_IDMAC)
imx_media_enum_ipu_formats(&code, 0, PIXFMT_SEL_YUV);
/* set a default mbus format */
ret = imx_media_init_mbus_fmt(&priv->format_mbus[i],
IMX_MEDIA_DEF_PIX_WIDTH,
IMX_MEDIA_DEF_PIX_HEIGHT, code,
V4L2_FIELD_NONE, &priv->cc[i]);
if (ret)
return ret;
/* init default frame interval */
priv->frame_interval[i].numerator = 1;
priv->frame_interval[i].denominator = 30;
if (i == VDIC_SRC_PAD_DIRECT)
priv->frame_interval[i].denominator *= 2;
}
priv->active_input_pad = VDIC_SINK_PAD_DIRECT;
return vdic_init_controls(priv);
}
static void vdic_unregistered(struct v4l2_subdev *sd)
{
struct vdic_priv *priv = v4l2_get_subdevdata(sd);
v4l2_ctrl_handler_free(&priv->ctrl_hdlr);
}
static const struct v4l2_subdev_pad_ops vdic_pad_ops = {
.enum_mbus_code = vdic_enum_mbus_code,
.get_fmt = vdic_get_fmt,
.set_fmt = vdic_set_fmt,
.get_frame_interval = vdic_get_frame_interval,
.set_frame_interval = vdic_set_frame_interval,
.link_validate = vdic_link_validate,
};
static const struct v4l2_subdev_video_ops vdic_video_ops = {
.s_stream = vdic_s_stream,
};
static const struct media_entity_operations vdic_entity_ops = {
.link_setup = vdic_link_setup,
.link_validate = v4l2_subdev_link_validate,
};
static const struct v4l2_subdev_ops vdic_subdev_ops = {
.video = &vdic_video_ops,
.pad = &vdic_pad_ops,
};
static const struct v4l2_subdev_internal_ops vdic_internal_ops = {
.init_state = imx_media_init_state,
.registered = vdic_registered,
.unregistered = vdic_unregistered,
};
struct v4l2_subdev *imx_media_vdic_register(struct v4l2_device *v4l2_dev,
struct device *ipu_dev,
struct ipu_soc *ipu,
u32 grp_id)
{
struct vdic_priv *priv;
int i, ret;
priv = devm_kzalloc(ipu_dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return ERR_PTR(-ENOMEM);
priv->ipu_dev = ipu_dev;
priv->ipu = ipu;
v4l2_subdev_init(&priv->sd, &vdic_subdev_ops);
v4l2_set_subdevdata(&priv->sd, priv);
priv->sd.internal_ops = &vdic_internal_ops;
priv->sd.entity.ops = &vdic_entity_ops;
priv->sd.entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
priv->sd.owner = ipu_dev->driver->owner;
priv->sd.flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
priv->sd.grp_id = grp_id;
imx_media_grp_id_to_sd_name(priv->sd.name, sizeof(priv->sd.name),
priv->sd.grp_id, ipu_get_num(ipu));
mutex_init(&priv->lock);
for (i = 0; i < VDIC_NUM_PADS; i++)
priv->pad[i].flags = (i == VDIC_SRC_PAD_DIRECT) ?
MEDIA_PAD_FL_SOURCE : MEDIA_PAD_FL_SINK;
ret = media_entity_pads_init(&priv->sd.entity, VDIC_NUM_PADS,
priv->pad);
if (ret)
goto free;
ret = v4l2_device_register_subdev(v4l2_dev, &priv->sd);
if (ret)
goto free;
return &priv->sd;
free:
mutex_destroy(&priv->lock);
return ERR_PTR(ret);
}
int imx_media_vdic_unregister(struct v4l2_subdev *sd)
{
struct vdic_priv *priv = v4l2_get_subdevdata(sd);
v4l2_info(sd, "Removing\n");
v4l2_device_unregister_subdev(sd);
mutex_destroy(&priv->lock);
media_entity_cleanup(&sd->entity);
return 0;
}
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