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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/staging/media/imx/imx-ic-prp.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/staging/media/imx/imx-ic-prp.c')
-rw-r--r-- | drivers/staging/media/imx/imx-ic-prp.c | 514 |
1 files changed, 514 insertions, 0 deletions
diff --git a/drivers/staging/media/imx/imx-ic-prp.c b/drivers/staging/media/imx/imx-ic-prp.c new file mode 100644 index 000000000..ac5fb3320 --- /dev/null +++ b/drivers/staging/media/imx/imx-ic-prp.c @@ -0,0 +1,514 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * 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. + */ +#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 32 +#define MIN_H 32 +#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_ic_priv *ic_priv; + struct media_pad pad[PRP_NUM_PADS]; + + /* lock to protect all members below */ + struct mutex lock; + + 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->task_priv; +} + +static int prp_start(struct prp_priv *priv) +{ + struct imx_ic_priv *ic_priv = priv->ic_priv; + bool src_is_vdic; + + /* set IC to receive from CSI or VDI depending on source */ + src_is_vdic = !!(priv->src_sd->grp_id & IMX_MEDIA_GRP_ID_IPU_VDIC); + + ipu_set_ic_src_mux(ic_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_state *sd_state, + 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, sd_state, pad); + else + return &priv->format_mbus; +} + +/* + * V4L2 subdev operations. + */ + +static int prp_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + 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_formats(&code->code, code->index, + PIXFMT_SEL_YUV_RGB); + break; + case PRP_SRC_PAD_PRPENC: + case PRP_SRC_PAD_PRPVF: + if (code->index != 0) { + ret = -EINVAL; + goto out; + } + infmt = __prp_get_fmt(priv, sd_state, 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_state *sd_state, + 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, sd_state, 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_state *sd_state, + struct v4l2_subdev_format *sdformat) +{ + struct prp_priv *priv = sd_to_priv(sd); + struct v4l2_mbus_framefmt *fmt, *infmt; + const struct imx_media_pixfmt *cc; + 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; + } + + infmt = __prp_get_fmt(priv, sd_state, PRP_SINK_PAD, sdformat->which); + + 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, + PIXFMT_SEL_YUV_RGB); + if (!cc) { + imx_media_enum_ipu_formats(&code, 0, + PIXFMT_SEL_YUV_RGB); + cc = imx_media_find_ipu_format(code, + PIXFMT_SEL_YUV_RGB); + sdformat->format.code = cc->codes[0]; + } + + if (sdformat->format.field == V4L2_FIELD_ANY) + sdformat->format.field = V4L2_FIELD_NONE; + break; + case PRP_SRC_PAD_PRPENC: + case PRP_SRC_PAD_PRPVF: + /* Output pads mirror input pad */ + sdformat->format = *infmt; + break; + } + + imx_media_try_colorimetry(&sdformat->format, true); + + fmt = __prp_get_fmt(priv, sd_state, 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->task_priv; + struct v4l2_subdev *remote_sd; + int ret = 0; + + dev_dbg(ic_priv->ipu_dev, "%s: link setup %s -> %s", + ic_priv->sd.name, 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_IPU_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_IPU_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->task_priv; + struct v4l2_subdev *csi; + int ret; + + ret = v4l2_subdev_link_validate_default(sd, link, + source_fmt, sink_fmt); + if (ret) + return ret; + + csi = imx_media_pipeline_subdev(&ic_priv->sd.entity, + IMX_MEDIA_GRP_ID_IPU_CSI, true); + if (IS_ERR(csi)) + csi = NULL; + + mutex_lock(&priv->lock); + + if (priv->src_sd->grp_id & IMX_MEDIA_GRP_ID_IPU_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->grp_id) { + case IMX_MEDIA_GRP_ID_IPU_CSI0: + priv->csi_id = 0; + break; + case IMX_MEDIA_GRP_ID_IPU_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->task_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->ipu_dev, "%s: stream %s\n", sd->name, + 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; + if (priv->stream_count < 0) + 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; + + mutex_lock(&priv->lock); + + /* No limits on valid frame intervals */ + if (fi->interval.numerator == 0 || fi->interval.denominator == 0) + fi->interval = priv->frame_interval; + else + priv->frame_interval = fi->interval; + + mutex_unlock(&priv->lock); + + return 0; +} + +static int prp_registered(struct v4l2_subdev *sd) +{ + struct prp_priv *priv = sd_to_priv(sd); + u32 code; + + /* init default frame interval */ + priv->frame_interval.numerator = 1; + priv->frame_interval.denominator = 30; + + /* set a default mbus format */ + imx_media_enum_ipu_formats(&code, 0, PIXFMT_SEL_YUV); + + return imx_media_init_mbus_fmt(&priv->format_mbus, + IMX_MEDIA_DEF_PIX_WIDTH, + IMX_MEDIA_DEF_PIX_HEIGHT, code, + V4L2_FIELD_NONE, NULL); +} + +static const struct v4l2_subdev_pad_ops prp_pad_ops = { + .init_cfg = imx_media_init_cfg, + .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; + int i; + + priv = devm_kzalloc(ic_priv->ipu_dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + mutex_init(&priv->lock); + ic_priv->task_priv = priv; + priv->ic_priv = ic_priv; + + for (i = 0; i < PRP_NUM_PADS; i++) + priv->pad[i].flags = (i == PRP_SINK_PAD) ? + MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE; + + return media_entity_pads_init(&ic_priv->sd.entity, PRP_NUM_PADS, + priv->pad); +} + +static void prp_remove(struct imx_ic_priv *ic_priv) +{ + struct prp_priv *priv = ic_priv->task_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, +}; |