// SPDX-License-Identifier: GPL-2.0+
|
/*
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* V4L2 Capture CSI Subdev for Freescale i.MX5/6 SOC
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*
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* Copyright (c) 2014-2017 Mentor Graphics Inc.
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* Copyright (C) 2017 Pengutronix, Philipp Zabel <kernel@pengutronix.de>
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*/
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#include <linux/delay.h>
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#include <linux/gcd.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/of_graph.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/platform_device.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-mc.h>
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#include <media/v4l2-subdev.h>
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#include <media/videobuf2-dma-contig.h>
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#include <video/imx-ipu-v3.h>
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#include <media/imx.h>
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#include "imx-media.h"
|
|
/*
|
* Min/Max supported width and heights.
|
*
|
* We allow planar output, so we have to align width by 16 pixels
|
* to meet IDMAC alignment requirements.
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*
|
* TODO: move this into pad format negotiation, if capture device
|
* has not requested planar formats, we should allow 8 pixel
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* alignment.
|
*/
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#define MIN_W 32
|
#define MIN_H 32
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#define MAX_W 4096
|
#define MAX_H 4096
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#define W_ALIGN 1 /* multiple of 2 pixels */
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#define H_ALIGN 1 /* multiple of 2 lines */
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#define S_ALIGN 1 /* multiple of 2 */
|
|
/*
|
* struct csi_skip_desc - CSI frame skipping descriptor
|
* @keep - number of frames kept per max_ratio frames
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* @max_ratio - width of skip_smfc, written to MAX_RATIO bitfield
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* @skip_smfc - skip pattern written to the SKIP_SMFC bitfield
|
*/
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struct csi_skip_desc {
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u8 keep;
|
u8 max_ratio;
|
u8 skip_smfc;
|
};
|
|
struct csi_priv {
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struct device *dev;
|
struct ipu_soc *ipu;
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struct v4l2_subdev sd;
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struct media_pad pad[CSI_NUM_PADS];
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struct v4l2_async_notifier notifier;
|
|
/* the video device at IDMAC output pad */
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struct imx_media_video_dev *vdev;
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struct imx_media_fim *fim;
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int csi_id;
|
int smfc_id;
|
|
/* lock to protect all members below */
|
struct mutex lock;
|
|
int active_output_pad;
|
|
struct ipuv3_channel *idmac_ch;
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struct ipu_smfc *smfc;
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struct ipu_csi *csi;
|
|
struct v4l2_mbus_framefmt format_mbus[CSI_NUM_PADS];
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const struct imx_media_pixfmt *cc[CSI_NUM_PADS];
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struct v4l2_fract frame_interval[CSI_NUM_PADS];
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struct v4l2_rect crop;
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struct v4l2_rect compose;
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const struct csi_skip_desc *skip;
|
|
/* active vb2 buffers to send to video dev sink */
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struct imx_media_buffer *active_vb2_buf[2];
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struct imx_media_dma_buf underrun_buf;
|
|
int ipu_buf_num; /* ipu double buffer index: 0-1 */
|
|
/* the sink for the captured frames */
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struct media_entity *sink;
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enum ipu_csi_dest dest;
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/* the source subdev */
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struct v4l2_subdev *src_sd;
|
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/* the mipi virtual channel number at link validate */
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int vc_num;
|
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/* the upstream endpoint CSI is receiving from */
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struct v4l2_fwnode_endpoint upstream_ep;
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spinlock_t irqlock; /* protect eof_irq handler */
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struct timer_list eof_timeout_timer;
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int eof_irq;
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int nfb4eof_irq;
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struct v4l2_ctrl_handler ctrl_hdlr;
|
|
int stream_count; /* streaming counter */
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u32 frame_sequence; /* frame sequence counter */
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bool last_eof; /* waiting for last EOF at stream off */
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bool nfb4eof; /* NFB4EOF encountered during streaming */
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bool interweave_swap; /* swap top/bottom lines when interweaving */
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struct completion last_eof_comp;
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};
|
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static inline struct csi_priv *sd_to_dev(struct v4l2_subdev *sdev)
|
{
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return container_of(sdev, struct csi_priv, sd);
|
}
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static inline struct csi_priv *notifier_to_dev(struct v4l2_async_notifier *n)
|
{
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return container_of(n, struct csi_priv, notifier);
|
}
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static inline bool is_parallel_bus(struct v4l2_fwnode_endpoint *ep)
|
{
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return ep->bus_type != V4L2_MBUS_CSI2_DPHY;
|
}
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static inline bool is_parallel_16bit_bus(struct v4l2_fwnode_endpoint *ep)
|
{
|
return is_parallel_bus(ep) && ep->bus.parallel.bus_width >= 16;
|
}
|
|
/*
|
* Check for conditions that require the IPU to handle the
|
* data internally as generic data, aka passthrough mode:
|
* - raw bayer media bus formats, or
|
* - the CSI is receiving from a 16-bit parallel bus, or
|
* - the CSI is receiving from an 8-bit parallel bus and the incoming
|
* media bus format is other than UYVY8_2X8/YUYV8_2X8.
|
*/
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static inline bool requires_passthrough(struct v4l2_fwnode_endpoint *ep,
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struct v4l2_mbus_framefmt *infmt,
|
const struct imx_media_pixfmt *incc)
|
{
|
return incc->bayer || is_parallel_16bit_bus(ep) ||
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(is_parallel_bus(ep) &&
|
infmt->code != MEDIA_BUS_FMT_UYVY8_2X8 &&
|
infmt->code != MEDIA_BUS_FMT_YUYV8_2X8);
|
}
|
|
/*
|
* Parses the fwnode endpoint from the source pad of the entity
|
* connected to this CSI. This will either be the entity directly
|
* upstream from the CSI-2 receiver, directly upstream from the
|
* video mux, or directly upstream from the CSI itself. The endpoint
|
* is needed to determine the bus type and bus config coming into
|
* the CSI.
|
*/
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static int csi_get_upstream_endpoint(struct csi_priv *priv,
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struct v4l2_fwnode_endpoint *ep)
|
{
|
struct fwnode_handle *endpoint;
|
struct v4l2_subdev *sd;
|
struct media_pad *pad;
|
|
if (!IS_ENABLED(CONFIG_OF))
|
return -ENXIO;
|
|
if (!priv->src_sd)
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return -EPIPE;
|
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sd = priv->src_sd;
|
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switch (sd->grp_id) {
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case IMX_MEDIA_GRP_ID_CSI_MUX:
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/*
|
* CSI is connected directly to CSI mux, skip up to
|
* CSI-2 receiver if it is in the path, otherwise stay
|
* with the CSI mux.
|
*/
|
sd = imx_media_pipeline_subdev(&sd->entity,
|
IMX_MEDIA_GRP_ID_CSI2,
|
true);
|
if (IS_ERR(sd))
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sd = priv->src_sd;
|
break;
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case IMX_MEDIA_GRP_ID_CSI2:
|
break;
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default:
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/*
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* the source is neither the CSI mux nor the CSI-2 receiver,
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* get the source pad directly upstream from CSI itself.
|
*/
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sd = &priv->sd;
|
break;
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}
|
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/* get source pad of entity directly upstream from sd */
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pad = imx_media_pipeline_pad(&sd->entity, 0, 0, true);
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if (!pad)
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return -ENODEV;
|
|
endpoint = imx_media_get_pad_fwnode(pad);
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if (IS_ERR(endpoint))
|
return PTR_ERR(endpoint);
|
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v4l2_fwnode_endpoint_parse(endpoint, ep);
|
|
fwnode_handle_put(endpoint);
|
|
return 0;
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}
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static void csi_idmac_put_ipu_resources(struct csi_priv *priv)
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{
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if (priv->idmac_ch)
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ipu_idmac_put(priv->idmac_ch);
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priv->idmac_ch = NULL;
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if (priv->smfc)
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ipu_smfc_put(priv->smfc);
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priv->smfc = NULL;
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}
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static int csi_idmac_get_ipu_resources(struct csi_priv *priv)
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{
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int ch_num, ret;
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struct ipu_smfc *smfc;
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struct ipuv3_channel *idmac_ch;
|
|
ch_num = IPUV3_CHANNEL_CSI0 + priv->smfc_id;
|
|
smfc = ipu_smfc_get(priv->ipu, ch_num);
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if (IS_ERR(smfc)) {
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v4l2_err(&priv->sd, "failed to get SMFC\n");
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ret = PTR_ERR(smfc);
|
goto out;
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}
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priv->smfc = smfc;
|
|
idmac_ch = ipu_idmac_get(priv->ipu, ch_num);
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if (IS_ERR(idmac_ch)) {
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v4l2_err(&priv->sd, "could not get IDMAC channel %u\n",
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ch_num);
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ret = PTR_ERR(idmac_ch);
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goto out;
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}
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priv->idmac_ch = idmac_ch;
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|
return 0;
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out:
|
csi_idmac_put_ipu_resources(priv);
|
return ret;
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}
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static void csi_vb2_buf_done(struct csi_priv *priv)
|
{
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struct imx_media_video_dev *vdev = priv->vdev;
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struct imx_media_buffer *done, *next;
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struct vb2_buffer *vb;
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dma_addr_t phys;
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done = priv->active_vb2_buf[priv->ipu_buf_num];
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if (done) {
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done->vbuf.field = vdev->fmt.fmt.pix.field;
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done->vbuf.sequence = priv->frame_sequence;
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vb = &done->vbuf.vb2_buf;
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vb->timestamp = ktime_get_ns();
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vb2_buffer_done(vb, priv->nfb4eof ?
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VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
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}
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priv->frame_sequence++;
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priv->nfb4eof = false;
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/* get next queued buffer */
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next = imx_media_capture_device_next_buf(vdev);
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if (next) {
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phys = vb2_dma_contig_plane_dma_addr(&next->vbuf.vb2_buf, 0);
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priv->active_vb2_buf[priv->ipu_buf_num] = next;
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} else {
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phys = priv->underrun_buf.phys;
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priv->active_vb2_buf[priv->ipu_buf_num] = NULL;
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}
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if (ipu_idmac_buffer_is_ready(priv->idmac_ch, priv->ipu_buf_num))
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ipu_idmac_clear_buffer(priv->idmac_ch, priv->ipu_buf_num);
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if (priv->interweave_swap)
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phys += vdev->fmt.fmt.pix.bytesperline;
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ipu_cpmem_set_buffer(priv->idmac_ch, priv->ipu_buf_num, phys);
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}
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static irqreturn_t csi_idmac_eof_interrupt(int irq, void *dev_id)
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{
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struct csi_priv *priv = dev_id;
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spin_lock(&priv->irqlock);
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if (priv->last_eof) {
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complete(&priv->last_eof_comp);
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priv->last_eof = false;
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goto unlock;
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}
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if (priv->fim)
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/* call frame interval monitor */
|
imx_media_fim_eof_monitor(priv->fim, ktime_get());
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csi_vb2_buf_done(priv);
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/* select new IPU buf */
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ipu_idmac_select_buffer(priv->idmac_ch, priv->ipu_buf_num);
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/* toggle IPU double-buffer index */
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priv->ipu_buf_num ^= 1;
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/* bump the EOF timeout timer */
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mod_timer(&priv->eof_timeout_timer,
|
jiffies + msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
|
|
unlock:
|
spin_unlock(&priv->irqlock);
|
return IRQ_HANDLED;
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}
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static irqreturn_t csi_idmac_nfb4eof_interrupt(int irq, void *dev_id)
|
{
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struct csi_priv *priv = dev_id;
|
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spin_lock(&priv->irqlock);
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/*
|
* this is not an unrecoverable error, just mark
|
* the next captured frame with vb2 error flag.
|
*/
|
priv->nfb4eof = true;
|
|
v4l2_err(&priv->sd, "NFB4EOF\n");
|
|
spin_unlock(&priv->irqlock);
|
|
return IRQ_HANDLED;
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}
|
|
/*
|
* EOF timeout timer function. This is an unrecoverable condition
|
* without a stream restart.
|
*/
|
static void csi_idmac_eof_timeout(struct timer_list *t)
|
{
|
struct csi_priv *priv = from_timer(priv, t, eof_timeout_timer);
|
struct imx_media_video_dev *vdev = priv->vdev;
|
|
v4l2_err(&priv->sd, "EOF timeout\n");
|
|
/* signal a fatal error to capture device */
|
imx_media_capture_device_error(vdev);
|
}
|
|
static void csi_idmac_setup_vb2_buf(struct csi_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 csi_idmac_unsetup_vb2_buf(struct csi_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);
|
}
|
}
|
}
|
|
/* init the SMFC IDMAC channel */
|
static int csi_idmac_setup_channel(struct csi_priv *priv)
|
{
|
struct imx_media_video_dev *vdev = priv->vdev;
|
const struct imx_media_pixfmt *incc;
|
struct v4l2_mbus_framefmt *infmt;
|
struct v4l2_mbus_framefmt *outfmt;
|
bool passthrough, interweave;
|
struct ipu_image image;
|
u32 passthrough_bits;
|
u32 passthrough_cycles;
|
dma_addr_t phys[2];
|
u32 burst_size;
|
int ret;
|
|
infmt = &priv->format_mbus[CSI_SINK_PAD];
|
incc = priv->cc[CSI_SINK_PAD];
|
outfmt = &priv->format_mbus[CSI_SRC_PAD_IDMAC];
|
|
ipu_cpmem_zero(priv->idmac_ch);
|
|
memset(&image, 0, sizeof(image));
|
image.pix = vdev->fmt.fmt.pix;
|
image.rect = vdev->compose;
|
|
csi_idmac_setup_vb2_buf(priv, phys);
|
|
image.phys0 = phys[0];
|
image.phys1 = phys[1];
|
|
passthrough = requires_passthrough(&priv->upstream_ep, infmt, incc);
|
passthrough_cycles = 1;
|
|
/*
|
* If the field type at capture interface is interlaced, and
|
* the output IDMAC pad is sequential, enable interweave at
|
* the IDMAC output channel.
|
*/
|
interweave = V4L2_FIELD_IS_INTERLACED(image.pix.field) &&
|
V4L2_FIELD_IS_SEQUENTIAL(outfmt->field);
|
priv->interweave_swap = interweave &&
|
image.pix.field == V4L2_FIELD_INTERLACED_BT;
|
|
switch (image.pix.pixelformat) {
|
case V4L2_PIX_FMT_SBGGR8:
|
case V4L2_PIX_FMT_SGBRG8:
|
case V4L2_PIX_FMT_SGRBG8:
|
case V4L2_PIX_FMT_SRGGB8:
|
case V4L2_PIX_FMT_GREY:
|
burst_size = 16;
|
passthrough_bits = 8;
|
break;
|
case V4L2_PIX_FMT_SBGGR16:
|
case V4L2_PIX_FMT_SGBRG16:
|
case V4L2_PIX_FMT_SGRBG16:
|
case V4L2_PIX_FMT_SRGGB16:
|
case V4L2_PIX_FMT_Y10:
|
case V4L2_PIX_FMT_Y12:
|
burst_size = 8;
|
passthrough_bits = 16;
|
break;
|
case V4L2_PIX_FMT_YUV420:
|
case V4L2_PIX_FMT_YVU420:
|
case V4L2_PIX_FMT_NV12:
|
burst_size = (image.pix.width & 0x3f) ?
|
((image.pix.width & 0x1f) ?
|
((image.pix.width & 0xf) ? 8 : 16) : 32) : 64;
|
passthrough_bits = 16;
|
/*
|
* Skip writing U and V components to odd rows (but not
|
* when enabling IDMAC interweaving, they are incompatible).
|
*/
|
if (!interweave)
|
ipu_cpmem_skip_odd_chroma_rows(priv->idmac_ch);
|
break;
|
case V4L2_PIX_FMT_YUYV:
|
case V4L2_PIX_FMT_UYVY:
|
burst_size = (image.pix.width & 0x1f) ?
|
((image.pix.width & 0xf) ? 8 : 16) : 32;
|
passthrough_bits = 16;
|
break;
|
case V4L2_PIX_FMT_RGB565:
|
if (passthrough) {
|
burst_size = 16;
|
passthrough_bits = 8;
|
passthrough_cycles = incc->cycles;
|
break;
|
}
|
fallthrough; /* non-passthrough RGB565 (CSI-2 bus) */
|
default:
|
burst_size = (image.pix.width & 0xf) ? 8 : 16;
|
passthrough_bits = 16;
|
break;
|
}
|
|
if (passthrough) {
|
if (priv->interweave_swap) {
|
/* start interweave scan at 1st top line (2nd line) */
|
image.phys0 += image.pix.bytesperline;
|
image.phys1 += image.pix.bytesperline;
|
}
|
|
ipu_cpmem_set_resolution(priv->idmac_ch,
|
image.rect.width * passthrough_cycles,
|
image.rect.height);
|
ipu_cpmem_set_stride(priv->idmac_ch, image.pix.bytesperline);
|
ipu_cpmem_set_buffer(priv->idmac_ch, 0, image.phys0);
|
ipu_cpmem_set_buffer(priv->idmac_ch, 1, image.phys1);
|
ipu_cpmem_set_format_passthrough(priv->idmac_ch,
|
passthrough_bits);
|
} else {
|
if (priv->interweave_swap) {
|
/* start interweave scan at 1st top line (2nd line) */
|
image.rect.top = 1;
|
}
|
|
ret = ipu_cpmem_set_image(priv->idmac_ch, &image);
|
if (ret)
|
goto unsetup_vb2;
|
}
|
|
ipu_cpmem_set_burstsize(priv->idmac_ch, burst_size);
|
|
/*
|
* Set the channel for the direct CSI-->memory via SMFC
|
* use-case to very high priority, by enabling the watermark
|
* signal in the SMFC, enabling WM in the channel, and setting
|
* the channel priority to high.
|
*
|
* Refer to the i.mx6 rev. D TRM Table 36-8: Calculated priority
|
* value.
|
*
|
* The WM's are set very low by intention here to ensure that
|
* the SMFC FIFOs do not overflow.
|
*/
|
ipu_smfc_set_watermark(priv->smfc, 0x02, 0x01);
|
ipu_cpmem_set_high_priority(priv->idmac_ch);
|
ipu_idmac_enable_watermark(priv->idmac_ch, true);
|
ipu_cpmem_set_axi_id(priv->idmac_ch, 0);
|
|
burst_size = passthrough ?
|
(burst_size >> 3) - 1 : (burst_size >> 2) - 1;
|
|
ipu_smfc_set_burstsize(priv->smfc, burst_size);
|
|
if (interweave)
|
ipu_cpmem_interlaced_scan(priv->idmac_ch,
|
priv->interweave_swap ?
|
-image.pix.bytesperline :
|
image.pix.bytesperline,
|
image.pix.pixelformat);
|
|
ipu_idmac_set_double_buffer(priv->idmac_ch, true);
|
|
return 0;
|
|
unsetup_vb2:
|
csi_idmac_unsetup_vb2_buf(priv, VB2_BUF_STATE_QUEUED);
|
return ret;
|
}
|
|
static void csi_idmac_unsetup(struct csi_priv *priv,
|
enum vb2_buffer_state state)
|
{
|
ipu_idmac_disable_channel(priv->idmac_ch);
|
ipu_smfc_disable(priv->smfc);
|
|
csi_idmac_unsetup_vb2_buf(priv, state);
|
}
|
|
static int csi_idmac_setup(struct csi_priv *priv)
|
{
|
int ret;
|
|
ret = csi_idmac_setup_channel(priv);
|
if (ret)
|
return ret;
|
|
ipu_cpmem_dump(priv->idmac_ch);
|
ipu_dump(priv->ipu);
|
|
ipu_smfc_enable(priv->smfc);
|
|
/* set buffers ready */
|
ipu_idmac_select_buffer(priv->idmac_ch, 0);
|
ipu_idmac_select_buffer(priv->idmac_ch, 1);
|
|
/* enable the channels */
|
ipu_idmac_enable_channel(priv->idmac_ch);
|
|
return 0;
|
}
|
|
static int csi_idmac_start(struct csi_priv *priv)
|
{
|
struct imx_media_video_dev *vdev = priv->vdev;
|
struct v4l2_pix_format *outfmt;
|
int ret;
|
|
ret = csi_idmac_get_ipu_resources(priv);
|
if (ret)
|
return ret;
|
|
ipu_smfc_map_channel(priv->smfc, priv->csi_id, priv->vc_num);
|
|
outfmt = &vdev->fmt.fmt.pix;
|
|
ret = imx_media_alloc_dma_buf(priv->dev, &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->frame_sequence = 0;
|
priv->last_eof = false;
|
priv->nfb4eof = false;
|
|
ret = csi_idmac_setup(priv);
|
if (ret) {
|
v4l2_err(&priv->sd, "csi_idmac_setup failed: %d\n", ret);
|
goto out_free_dma_buf;
|
}
|
|
priv->nfb4eof_irq = ipu_idmac_channel_irq(priv->ipu,
|
priv->idmac_ch,
|
IPU_IRQ_NFB4EOF);
|
ret = devm_request_irq(priv->dev, priv->nfb4eof_irq,
|
csi_idmac_nfb4eof_interrupt, 0,
|
"imx-smfc-nfb4eof", priv);
|
if (ret) {
|
v4l2_err(&priv->sd,
|
"Error registering NFB4EOF irq: %d\n", ret);
|
goto out_unsetup;
|
}
|
|
priv->eof_irq = ipu_idmac_channel_irq(priv->ipu, priv->idmac_ch,
|
IPU_IRQ_EOF);
|
|
ret = devm_request_irq(priv->dev, priv->eof_irq,
|
csi_idmac_eof_interrupt, 0,
|
"imx-smfc-eof", priv);
|
if (ret) {
|
v4l2_err(&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(priv->dev, priv->nfb4eof_irq, priv);
|
out_unsetup:
|
csi_idmac_unsetup(priv, VB2_BUF_STATE_QUEUED);
|
out_free_dma_buf:
|
imx_media_free_dma_buf(priv->dev, &priv->underrun_buf);
|
out_put_ipu:
|
csi_idmac_put_ipu_resources(priv);
|
return ret;
|
}
|
|
static void csi_idmac_wait_last_eof(struct csi_priv *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(&priv->sd, "wait last EOF timeout\n");
|
}
|
|
static void csi_idmac_stop(struct csi_priv *priv)
|
{
|
devm_free_irq(priv->dev, priv->eof_irq, priv);
|
devm_free_irq(priv->dev, priv->nfb4eof_irq, priv);
|
|
csi_idmac_unsetup(priv, VB2_BUF_STATE_ERROR);
|
|
imx_media_free_dma_buf(priv->dev, &priv->underrun_buf);
|
|
/* cancel the EOF timeout timer */
|
del_timer_sync(&priv->eof_timeout_timer);
|
|
csi_idmac_put_ipu_resources(priv);
|
}
|
|
/* Update the CSI whole sensor and active windows */
|
static int csi_setup(struct csi_priv *priv)
|
{
|
struct v4l2_mbus_framefmt *infmt, *outfmt;
|
const struct imx_media_pixfmt *incc;
|
struct v4l2_mbus_config mbus_cfg;
|
struct v4l2_mbus_framefmt if_fmt;
|
struct v4l2_rect crop;
|
|
infmt = &priv->format_mbus[CSI_SINK_PAD];
|
incc = priv->cc[CSI_SINK_PAD];
|
outfmt = &priv->format_mbus[priv->active_output_pad];
|
|
/* compose mbus_config from the upstream endpoint */
|
mbus_cfg.type = priv->upstream_ep.bus_type;
|
mbus_cfg.flags = is_parallel_bus(&priv->upstream_ep) ?
|
priv->upstream_ep.bus.parallel.flags :
|
priv->upstream_ep.bus.mipi_csi2.flags;
|
|
if_fmt = *infmt;
|
crop = priv->crop;
|
|
/*
|
* if cycles is set, we need to handle this over multiple cycles as
|
* generic/bayer data
|
*/
|
if (is_parallel_bus(&priv->upstream_ep) && incc->cycles) {
|
if_fmt.width *= incc->cycles;
|
crop.width *= incc->cycles;
|
}
|
|
ipu_csi_set_window(priv->csi, &crop);
|
|
ipu_csi_set_downsize(priv->csi,
|
priv->crop.width == 2 * priv->compose.width,
|
priv->crop.height == 2 * priv->compose.height);
|
|
ipu_csi_init_interface(priv->csi, &mbus_cfg, &if_fmt, outfmt);
|
|
ipu_csi_set_dest(priv->csi, priv->dest);
|
|
if (priv->dest == IPU_CSI_DEST_IDMAC)
|
ipu_csi_set_skip_smfc(priv->csi, priv->skip->skip_smfc,
|
priv->skip->max_ratio - 1, 0);
|
|
ipu_csi_dump(priv->csi);
|
|
return 0;
|
}
|
|
static int csi_start(struct csi_priv *priv)
|
{
|
struct v4l2_fract *input_fi, *output_fi;
|
int ret;
|
|
input_fi = &priv->frame_interval[CSI_SINK_PAD];
|
output_fi = &priv->frame_interval[priv->active_output_pad];
|
|
/* start upstream */
|
ret = v4l2_subdev_call(priv->src_sd, video, s_stream, 1);
|
ret = (ret && ret != -ENOIOCTLCMD) ? ret : 0;
|
if (ret)
|
return ret;
|
|
/* Skip first few frames from a BT.656 source */
|
if (priv->upstream_ep.bus_type == V4L2_MBUS_BT656) {
|
u32 delay_usec, bad_frames = 20;
|
|
delay_usec = DIV_ROUND_UP_ULL((u64)USEC_PER_SEC *
|
input_fi->numerator * bad_frames,
|
input_fi->denominator);
|
|
usleep_range(delay_usec, delay_usec + 1000);
|
}
|
|
if (priv->dest == IPU_CSI_DEST_IDMAC) {
|
ret = csi_idmac_start(priv);
|
if (ret)
|
goto stop_upstream;
|
}
|
|
ret = csi_setup(priv);
|
if (ret)
|
goto idmac_stop;
|
|
/* start the frame interval monitor */
|
if (priv->fim && priv->dest == IPU_CSI_DEST_IDMAC) {
|
ret = imx_media_fim_set_stream(priv->fim, output_fi, true);
|
if (ret)
|
goto idmac_stop;
|
}
|
|
ret = ipu_csi_enable(priv->csi);
|
if (ret) {
|
v4l2_err(&priv->sd, "CSI enable error: %d\n", ret);
|
goto fim_off;
|
}
|
|
return 0;
|
|
fim_off:
|
if (priv->fim && priv->dest == IPU_CSI_DEST_IDMAC)
|
imx_media_fim_set_stream(priv->fim, NULL, false);
|
idmac_stop:
|
if (priv->dest == IPU_CSI_DEST_IDMAC)
|
csi_idmac_stop(priv);
|
stop_upstream:
|
v4l2_subdev_call(priv->src_sd, video, s_stream, 0);
|
return ret;
|
}
|
|
static void csi_stop(struct csi_priv *priv)
|
{
|
if (priv->dest == IPU_CSI_DEST_IDMAC)
|
csi_idmac_wait_last_eof(priv);
|
|
/*
|
* Disable the CSI asap, after syncing with the last EOF.
|
* Doing so after the IDMA channel is disabled has shown to
|
* create hard system-wide hangs.
|
*/
|
ipu_csi_disable(priv->csi);
|
|
/* stop upstream */
|
v4l2_subdev_call(priv->src_sd, video, s_stream, 0);
|
|
if (priv->dest == IPU_CSI_DEST_IDMAC) {
|
csi_idmac_stop(priv);
|
|
/* stop the frame interval monitor */
|
if (priv->fim)
|
imx_media_fim_set_stream(priv->fim, NULL, false);
|
}
|
}
|
|
static const struct csi_skip_desc csi_skip[12] = {
|
{ 1, 1, 0x00 }, /* Keep all frames */
|
{ 5, 6, 0x10 }, /* Skip every sixth frame */
|
{ 4, 5, 0x08 }, /* Skip every fifth frame */
|
{ 3, 4, 0x04 }, /* Skip every fourth frame */
|
{ 2, 3, 0x02 }, /* Skip every third frame */
|
{ 3, 5, 0x0a }, /* Skip frames 1 and 3 of every 5 */
|
{ 1, 2, 0x01 }, /* Skip every second frame */
|
{ 2, 5, 0x0b }, /* Keep frames 1 and 4 of every 5 */
|
{ 1, 3, 0x03 }, /* Keep one in three frames */
|
{ 1, 4, 0x07 }, /* Keep one in four frames */
|
{ 1, 5, 0x0f }, /* Keep one in five frames */
|
{ 1, 6, 0x1f }, /* Keep one in six frames */
|
};
|
|
static void csi_apply_skip_interval(const struct csi_skip_desc *skip,
|
struct v4l2_fract *interval)
|
{
|
unsigned int div;
|
|
interval->numerator *= skip->max_ratio;
|
interval->denominator *= skip->keep;
|
|
/* Reduce fraction to lowest terms */
|
div = gcd(interval->numerator, interval->denominator);
|
if (div > 1) {
|
interval->numerator /= div;
|
interval->denominator /= div;
|
}
|
}
|
|
/*
|
* Find the skip pattern to produce the output frame interval closest to the
|
* requested one, for the given input frame interval. Updates the output frame
|
* interval to the exact value.
|
*/
|
static const struct csi_skip_desc *csi_find_best_skip(struct v4l2_fract *in,
|
struct v4l2_fract *out)
|
{
|
const struct csi_skip_desc *skip = &csi_skip[0], *best_skip = skip;
|
u32 min_err = UINT_MAX;
|
u64 want_us;
|
int i;
|
|
/* Default to 1:1 ratio */
|
if (out->numerator == 0 || out->denominator == 0 ||
|
in->numerator == 0 || in->denominator == 0) {
|
*out = *in;
|
return best_skip;
|
}
|
|
want_us = div_u64((u64)USEC_PER_SEC * out->numerator, out->denominator);
|
|
/* Find the reduction closest to the requested time per frame */
|
for (i = 0; i < ARRAY_SIZE(csi_skip); i++, skip++) {
|
u64 tmp, err;
|
|
tmp = div_u64((u64)USEC_PER_SEC * in->numerator *
|
skip->max_ratio, in->denominator * skip->keep);
|
|
err = abs((s64)tmp - want_us);
|
if (err < min_err) {
|
min_err = err;
|
best_skip = skip;
|
}
|
}
|
|
*out = *in;
|
csi_apply_skip_interval(best_skip, out);
|
|
return best_skip;
|
}
|
|
/*
|
* V4L2 subdev operations.
|
*/
|
|
static int csi_g_frame_interval(struct v4l2_subdev *sd,
|
struct v4l2_subdev_frame_interval *fi)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
|
if (fi->pad >= CSI_NUM_PADS)
|
return -EINVAL;
|
|
mutex_lock(&priv->lock);
|
|
fi->interval = priv->frame_interval[fi->pad];
|
|
mutex_unlock(&priv->lock);
|
|
return 0;
|
}
|
|
static int csi_s_frame_interval(struct v4l2_subdev *sd,
|
struct v4l2_subdev_frame_interval *fi)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct v4l2_fract *input_fi;
|
int ret = 0;
|
|
mutex_lock(&priv->lock);
|
|
input_fi = &priv->frame_interval[CSI_SINK_PAD];
|
|
switch (fi->pad) {
|
case CSI_SINK_PAD:
|
/* No limits on valid input frame intervals */
|
if (fi->interval.numerator == 0 ||
|
fi->interval.denominator == 0)
|
fi->interval = *input_fi;
|
/* Reset output intervals and frame skipping ratio to 1:1 */
|
priv->frame_interval[CSI_SRC_PAD_IDMAC] = fi->interval;
|
priv->frame_interval[CSI_SRC_PAD_DIRECT] = fi->interval;
|
priv->skip = &csi_skip[0];
|
break;
|
case CSI_SRC_PAD_IDMAC:
|
/*
|
* frame interval at IDMAC output pad depends on input
|
* interval, modified by frame skipping.
|
*/
|
priv->skip = csi_find_best_skip(input_fi, &fi->interval);
|
break;
|
case CSI_SRC_PAD_DIRECT:
|
/*
|
* frame interval at DIRECT output pad is same as input
|
* interval.
|
*/
|
fi->interval = *input_fi;
|
break;
|
default:
|
ret = -EINVAL;
|
goto out;
|
}
|
|
priv->frame_interval[fi->pad] = fi->interval;
|
out:
|
mutex_unlock(&priv->lock);
|
return ret;
|
}
|
|
static int csi_s_stream(struct v4l2_subdev *sd, int enable)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
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;
|
|
if (enable) {
|
dev_dbg(priv->dev, "stream ON\n");
|
ret = csi_start(priv);
|
if (ret)
|
goto out;
|
} else {
|
dev_dbg(priv->dev, "stream OFF\n");
|
csi_stop(priv);
|
}
|
|
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 csi_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 csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct v4l2_subdev *remote_sd;
|
int ret = 0;
|
|
dev_dbg(priv->dev, "link setup %s -> %s\n", 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 a source pad */
|
|
if (flags & MEDIA_LNK_FL_ENABLED) {
|
if (priv->sink) {
|
ret = -EBUSY;
|
goto out;
|
}
|
} else {
|
v4l2_ctrl_handler_free(&priv->ctrl_hdlr);
|
v4l2_ctrl_handler_init(&priv->ctrl_hdlr, 0);
|
priv->sink = NULL;
|
/* do not apply IC burst alignment in csi_try_crop */
|
priv->active_output_pad = CSI_SRC_PAD_IDMAC;
|
goto out;
|
}
|
|
/* record which output pad is now active */
|
priv->active_output_pad = local->index;
|
|
/* set CSI destination */
|
if (local->index == CSI_SRC_PAD_IDMAC) {
|
if (!is_media_entity_v4l2_video_device(remote->entity)) {
|
ret = -EINVAL;
|
goto out;
|
}
|
|
if (priv->fim) {
|
ret = imx_media_fim_add_controls(priv->fim);
|
if (ret)
|
goto out;
|
}
|
|
priv->dest = IPU_CSI_DEST_IDMAC;
|
} else {
|
if (!is_media_entity_v4l2_subdev(remote->entity)) {
|
ret = -EINVAL;
|
goto out;
|
}
|
|
remote_sd = media_entity_to_v4l2_subdev(remote->entity);
|
switch (remote_sd->grp_id) {
|
case IMX_MEDIA_GRP_ID_IPU_VDIC:
|
priv->dest = IPU_CSI_DEST_VDIC;
|
break;
|
case IMX_MEDIA_GRP_ID_IPU_IC_PRP:
|
priv->dest = IPU_CSI_DEST_IC;
|
break;
|
default:
|
ret = -EINVAL;
|
goto out;
|
}
|
}
|
|
priv->sink = remote->entity;
|
out:
|
mutex_unlock(&priv->lock);
|
return ret;
|
}
|
|
static int csi_link_validate(struct v4l2_subdev *sd,
|
struct media_link *link,
|
struct v4l2_subdev_format *source_fmt,
|
struct v4l2_subdev_format *sink_fmt)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct v4l2_fwnode_endpoint upstream_ep = { .bus_type = 0 };
|
bool is_csi2;
|
int ret;
|
|
ret = v4l2_subdev_link_validate_default(sd, link,
|
source_fmt, sink_fmt);
|
if (ret)
|
return ret;
|
|
ret = csi_get_upstream_endpoint(priv, &upstream_ep);
|
if (ret) {
|
v4l2_err(&priv->sd, "failed to find upstream endpoint\n");
|
return ret;
|
}
|
|
mutex_lock(&priv->lock);
|
|
priv->upstream_ep = upstream_ep;
|
is_csi2 = !is_parallel_bus(&upstream_ep);
|
if (is_csi2) {
|
int vc_num = 0;
|
/*
|
* NOTE! It seems the virtual channels from the mipi csi-2
|
* receiver are used only for routing by the video mux's,
|
* or for hard-wired routing to the CSI's. Once the stream
|
* enters the CSI's however, they are treated internally
|
* in the IPU as virtual channel 0.
|
*/
|
#if 0
|
mutex_unlock(&priv->lock);
|
vc_num = imx_media_find_mipi_csi2_channel(&priv->sd.entity);
|
if (vc_num < 0)
|
return vc_num;
|
mutex_lock(&priv->lock);
|
#endif
|
ipu_csi_set_mipi_datatype(priv->csi, vc_num,
|
&priv->format_mbus[CSI_SINK_PAD]);
|
}
|
|
/* select either parallel or MIPI-CSI2 as input to CSI */
|
ipu_set_csi_src_mux(priv->ipu, priv->csi_id, is_csi2);
|
|
mutex_unlock(&priv->lock);
|
return ret;
|
}
|
|
static struct v4l2_mbus_framefmt *
|
__csi_get_fmt(struct csi_priv *priv, struct v4l2_subdev_pad_config *cfg,
|
unsigned int pad, enum v4l2_subdev_format_whence which)
|
{
|
if (which == V4L2_SUBDEV_FORMAT_TRY)
|
return v4l2_subdev_get_try_format(&priv->sd, cfg, pad);
|
else
|
return &priv->format_mbus[pad];
|
}
|
|
static struct v4l2_rect *
|
__csi_get_crop(struct csi_priv *priv, struct v4l2_subdev_pad_config *cfg,
|
enum v4l2_subdev_format_whence which)
|
{
|
if (which == V4L2_SUBDEV_FORMAT_TRY)
|
return v4l2_subdev_get_try_crop(&priv->sd, cfg, CSI_SINK_PAD);
|
else
|
return &priv->crop;
|
}
|
|
static struct v4l2_rect *
|
__csi_get_compose(struct csi_priv *priv, struct v4l2_subdev_pad_config *cfg,
|
enum v4l2_subdev_format_whence which)
|
{
|
if (which == V4L2_SUBDEV_FORMAT_TRY)
|
return v4l2_subdev_get_try_compose(&priv->sd, cfg,
|
CSI_SINK_PAD);
|
else
|
return &priv->compose;
|
}
|
|
static void csi_try_crop(struct csi_priv *priv,
|
struct v4l2_rect *crop,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_mbus_framefmt *infmt,
|
struct v4l2_fwnode_endpoint *upstream_ep)
|
{
|
u32 in_height;
|
|
crop->width = min_t(__u32, infmt->width, crop->width);
|
if (crop->left + crop->width > infmt->width)
|
crop->left = infmt->width - crop->width;
|
/* adjust crop left/width to h/w alignment restrictions */
|
crop->left &= ~0x3;
|
if (priv->active_output_pad == CSI_SRC_PAD_DIRECT)
|
crop->width &= ~0x7; /* multiple of 8 pixels (IC burst) */
|
else
|
crop->width &= ~0x1; /* multiple of 2 pixels */
|
|
in_height = infmt->height;
|
if (infmt->field == V4L2_FIELD_ALTERNATE)
|
in_height *= 2;
|
|
/*
|
* FIXME: not sure why yet, but on interlaced bt.656,
|
* changing the vertical cropping causes loss of vertical
|
* sync, so fix it to NTSC/PAL active lines. NTSC contains
|
* 2 extra lines of active video that need to be cropped.
|
*/
|
if (upstream_ep->bus_type == V4L2_MBUS_BT656 &&
|
(V4L2_FIELD_HAS_BOTH(infmt->field) ||
|
infmt->field == V4L2_FIELD_ALTERNATE)) {
|
crop->height = in_height;
|
crop->top = (in_height == 480) ? 2 : 0;
|
} else {
|
crop->height = min_t(__u32, in_height, crop->height);
|
if (crop->top + crop->height > in_height)
|
crop->top = in_height - crop->height;
|
}
|
}
|
|
static int csi_enum_mbus_code(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_mbus_code_enum *code)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct v4l2_fwnode_endpoint upstream_ep = { .bus_type = 0 };
|
const struct imx_media_pixfmt *incc;
|
struct v4l2_mbus_framefmt *infmt;
|
int ret = 0;
|
|
mutex_lock(&priv->lock);
|
|
infmt = __csi_get_fmt(priv, cfg, CSI_SINK_PAD, code->which);
|
incc = imx_media_find_mbus_format(infmt->code, PIXFMT_SEL_ANY);
|
|
switch (code->pad) {
|
case CSI_SINK_PAD:
|
ret = imx_media_enum_mbus_formats(&code->code, code->index,
|
PIXFMT_SEL_ANY);
|
break;
|
case CSI_SRC_PAD_DIRECT:
|
case CSI_SRC_PAD_IDMAC:
|
ret = csi_get_upstream_endpoint(priv, &upstream_ep);
|
if (ret) {
|
v4l2_err(&priv->sd, "failed to find upstream endpoint\n");
|
goto out;
|
}
|
|
if (requires_passthrough(&upstream_ep, infmt, incc)) {
|
if (code->index != 0) {
|
ret = -EINVAL;
|
goto out;
|
}
|
code->code = infmt->code;
|
} else {
|
enum imx_pixfmt_sel fmt_sel =
|
(incc->cs == IPUV3_COLORSPACE_YUV) ?
|
PIXFMT_SEL_YUV : PIXFMT_SEL_RGB;
|
|
ret = imx_media_enum_ipu_formats(&code->code,
|
code->index,
|
fmt_sel);
|
}
|
break;
|
default:
|
ret = -EINVAL;
|
}
|
|
out:
|
mutex_unlock(&priv->lock);
|
return ret;
|
}
|
|
static int csi_enum_frame_size(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_frame_size_enum *fse)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct v4l2_rect *crop;
|
int ret = 0;
|
|
if (fse->pad >= CSI_NUM_PADS ||
|
fse->index > (fse->pad == CSI_SINK_PAD ? 0 : 3))
|
return -EINVAL;
|
|
mutex_lock(&priv->lock);
|
|
if (fse->pad == CSI_SINK_PAD) {
|
fse->min_width = MIN_W;
|
fse->max_width = MAX_W;
|
fse->min_height = MIN_H;
|
fse->max_height = MAX_H;
|
} else {
|
crop = __csi_get_crop(priv, cfg, fse->which);
|
|
fse->min_width = fse->index & 1 ?
|
crop->width / 2 : crop->width;
|
fse->max_width = fse->min_width;
|
fse->min_height = fse->index & 2 ?
|
crop->height / 2 : crop->height;
|
fse->max_height = fse->min_height;
|
}
|
|
mutex_unlock(&priv->lock);
|
return ret;
|
}
|
|
static int csi_enum_frame_interval(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_frame_interval_enum *fie)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct v4l2_fract *input_fi;
|
struct v4l2_rect *crop;
|
int ret = 0;
|
|
if (fie->pad >= CSI_NUM_PADS ||
|
fie->index >= (fie->pad != CSI_SRC_PAD_IDMAC ?
|
1 : ARRAY_SIZE(csi_skip)))
|
return -EINVAL;
|
|
mutex_lock(&priv->lock);
|
|
input_fi = &priv->frame_interval[CSI_SINK_PAD];
|
crop = __csi_get_crop(priv, cfg, fie->which);
|
|
if ((fie->width != crop->width && fie->width != crop->width / 2) ||
|
(fie->height != crop->height && fie->height != crop->height / 2)) {
|
ret = -EINVAL;
|
goto out;
|
}
|
|
fie->interval = *input_fi;
|
|
if (fie->pad == CSI_SRC_PAD_IDMAC)
|
csi_apply_skip_interval(&csi_skip[fie->index],
|
&fie->interval);
|
|
out:
|
mutex_unlock(&priv->lock);
|
return ret;
|
}
|
|
static int csi_get_fmt(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_format *sdformat)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct v4l2_mbus_framefmt *fmt;
|
int ret = 0;
|
|
if (sdformat->pad >= CSI_NUM_PADS)
|
return -EINVAL;
|
|
mutex_lock(&priv->lock);
|
|
fmt = __csi_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 csi_try_field(struct csi_priv *priv,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_format *sdformat)
|
{
|
struct v4l2_mbus_framefmt *infmt =
|
__csi_get_fmt(priv, cfg, CSI_SINK_PAD, sdformat->which);
|
|
/*
|
* no restrictions on sink pad field type except must
|
* be initialized.
|
*/
|
if (sdformat->pad == CSI_SINK_PAD) {
|
if (sdformat->format.field == V4L2_FIELD_ANY)
|
sdformat->format.field = V4L2_FIELD_NONE;
|
return;
|
}
|
|
switch (infmt->field) {
|
case V4L2_FIELD_SEQ_TB:
|
case V4L2_FIELD_SEQ_BT:
|
/*
|
* If the user requests sequential at the source pad,
|
* allow it (along with possibly inverting field order).
|
* Otherwise passthrough the field type.
|
*/
|
if (!V4L2_FIELD_IS_SEQUENTIAL(sdformat->format.field))
|
sdformat->format.field = infmt->field;
|
break;
|
case V4L2_FIELD_ALTERNATE:
|
/*
|
* This driver does not support alternate field mode, and
|
* the CSI captures a whole frame, so the CSI never presents
|
* alternate mode at its source pads. If user has not
|
* already requested sequential, translate ALTERNATE at
|
* sink pad to SEQ_TB or SEQ_BT at the source pad depending
|
* on input height (assume NTSC BT order if 480 total active
|
* frame lines, otherwise PAL TB order).
|
*/
|
if (!V4L2_FIELD_IS_SEQUENTIAL(sdformat->format.field))
|
sdformat->format.field = (infmt->height == 480 / 2) ?
|
V4L2_FIELD_SEQ_BT : V4L2_FIELD_SEQ_TB;
|
break;
|
default:
|
/* Passthrough for all other input field types */
|
sdformat->format.field = infmt->field;
|
break;
|
}
|
}
|
|
static void csi_try_fmt(struct csi_priv *priv,
|
struct v4l2_fwnode_endpoint *upstream_ep,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_format *sdformat,
|
struct v4l2_rect *crop,
|
struct v4l2_rect *compose,
|
const struct imx_media_pixfmt **cc)
|
{
|
const struct imx_media_pixfmt *incc;
|
struct v4l2_mbus_framefmt *infmt;
|
u32 code;
|
|
infmt = __csi_get_fmt(priv, cfg, CSI_SINK_PAD, sdformat->which);
|
|
switch (sdformat->pad) {
|
case CSI_SRC_PAD_DIRECT:
|
case CSI_SRC_PAD_IDMAC:
|
incc = imx_media_find_mbus_format(infmt->code, PIXFMT_SEL_ANY);
|
|
sdformat->format.width = compose->width;
|
sdformat->format.height = compose->height;
|
|
if (requires_passthrough(upstream_ep, infmt, incc)) {
|
sdformat->format.code = infmt->code;
|
*cc = incc;
|
} else {
|
enum imx_pixfmt_sel fmt_sel =
|
(incc->cs == IPUV3_COLORSPACE_YUV) ?
|
PIXFMT_SEL_YUV : PIXFMT_SEL_RGB;
|
|
*cc = imx_media_find_ipu_format(sdformat->format.code,
|
fmt_sel);
|
if (!*cc) {
|
imx_media_enum_ipu_formats(&code, 0, fmt_sel);
|
*cc = imx_media_find_ipu_format(code, fmt_sel);
|
sdformat->format.code = (*cc)->codes[0];
|
}
|
}
|
|
csi_try_field(priv, cfg, sdformat);
|
|
/* propagate colorimetry from sink */
|
sdformat->format.colorspace = infmt->colorspace;
|
sdformat->format.xfer_func = infmt->xfer_func;
|
sdformat->format.quantization = infmt->quantization;
|
sdformat->format.ycbcr_enc = infmt->ycbcr_enc;
|
|
break;
|
case CSI_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_mbus_format(sdformat->format.code,
|
PIXFMT_SEL_ANY);
|
if (!*cc) {
|
imx_media_enum_mbus_formats(&code, 0,
|
PIXFMT_SEL_YUV_RGB);
|
*cc = imx_media_find_mbus_format(code,
|
PIXFMT_SEL_YUV_RGB);
|
sdformat->format.code = (*cc)->codes[0];
|
}
|
|
csi_try_field(priv, cfg, sdformat);
|
|
/* Reset crop and compose rectangles */
|
crop->left = 0;
|
crop->top = 0;
|
crop->width = sdformat->format.width;
|
crop->height = sdformat->format.height;
|
if (sdformat->format.field == V4L2_FIELD_ALTERNATE)
|
crop->height *= 2;
|
csi_try_crop(priv, crop, cfg, &sdformat->format, upstream_ep);
|
compose->left = 0;
|
compose->top = 0;
|
compose->width = crop->width;
|
compose->height = crop->height;
|
|
break;
|
}
|
|
imx_media_try_colorimetry(&sdformat->format,
|
priv->active_output_pad == CSI_SRC_PAD_DIRECT);
|
}
|
|
static int csi_set_fmt(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_format *sdformat)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct v4l2_fwnode_endpoint upstream_ep = { .bus_type = 0 };
|
const struct imx_media_pixfmt *cc;
|
struct v4l2_mbus_framefmt *fmt;
|
struct v4l2_rect *crop, *compose;
|
int ret;
|
|
if (sdformat->pad >= CSI_NUM_PADS)
|
return -EINVAL;
|
|
ret = csi_get_upstream_endpoint(priv, &upstream_ep);
|
if (ret) {
|
v4l2_err(&priv->sd, "failed to find upstream endpoint\n");
|
return ret;
|
}
|
|
mutex_lock(&priv->lock);
|
|
if (priv->stream_count > 0) {
|
ret = -EBUSY;
|
goto out;
|
}
|
|
crop = __csi_get_crop(priv, cfg, sdformat->which);
|
compose = __csi_get_compose(priv, cfg, sdformat->which);
|
|
csi_try_fmt(priv, &upstream_ep, cfg, sdformat, crop, compose, &cc);
|
|
fmt = __csi_get_fmt(priv, cfg, sdformat->pad, sdformat->which);
|
*fmt = sdformat->format;
|
|
if (sdformat->pad == CSI_SINK_PAD) {
|
int pad;
|
|
/* propagate format to source pads */
|
for (pad = CSI_SINK_PAD + 1; pad < CSI_NUM_PADS; pad++) {
|
const struct imx_media_pixfmt *outcc;
|
struct v4l2_mbus_framefmt *outfmt;
|
struct v4l2_subdev_format format;
|
|
format.pad = pad;
|
format.which = sdformat->which;
|
format.format = sdformat->format;
|
csi_try_fmt(priv, &upstream_ep, cfg, &format,
|
NULL, compose, &outcc);
|
|
outfmt = __csi_get_fmt(priv, cfg, pad, sdformat->which);
|
*outfmt = format.format;
|
|
if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
priv->cc[pad] = outcc;
|
}
|
}
|
|
if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
priv->cc[sdformat->pad] = cc;
|
|
out:
|
mutex_unlock(&priv->lock);
|
return ret;
|
}
|
|
static int csi_get_selection(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_selection *sel)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct v4l2_mbus_framefmt *infmt;
|
struct v4l2_rect *crop, *compose;
|
int ret = 0;
|
|
if (sel->pad != CSI_SINK_PAD)
|
return -EINVAL;
|
|
mutex_lock(&priv->lock);
|
|
infmt = __csi_get_fmt(priv, cfg, CSI_SINK_PAD, sel->which);
|
crop = __csi_get_crop(priv, cfg, sel->which);
|
compose = __csi_get_compose(priv, cfg, sel->which);
|
|
switch (sel->target) {
|
case V4L2_SEL_TGT_CROP_BOUNDS:
|
sel->r.left = 0;
|
sel->r.top = 0;
|
sel->r.width = infmt->width;
|
sel->r.height = infmt->height;
|
if (infmt->field == V4L2_FIELD_ALTERNATE)
|
sel->r.height *= 2;
|
break;
|
case V4L2_SEL_TGT_CROP:
|
sel->r = *crop;
|
break;
|
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
|
sel->r.left = 0;
|
sel->r.top = 0;
|
sel->r.width = crop->width;
|
sel->r.height = crop->height;
|
break;
|
case V4L2_SEL_TGT_COMPOSE:
|
sel->r = *compose;
|
break;
|
default:
|
ret = -EINVAL;
|
}
|
|
mutex_unlock(&priv->lock);
|
return ret;
|
}
|
|
static int csi_set_scale(u32 *compose, u32 crop, u32 flags)
|
{
|
if ((flags & (V4L2_SEL_FLAG_LE | V4L2_SEL_FLAG_GE)) ==
|
(V4L2_SEL_FLAG_LE | V4L2_SEL_FLAG_GE) &&
|
*compose != crop && *compose != crop / 2)
|
return -ERANGE;
|
|
if (*compose <= crop / 2 ||
|
(*compose < crop * 3 / 4 && !(flags & V4L2_SEL_FLAG_GE)) ||
|
(*compose < crop && (flags & V4L2_SEL_FLAG_LE)))
|
*compose = crop / 2;
|
else
|
*compose = crop;
|
|
return 0;
|
}
|
|
static int csi_set_selection(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_selection *sel)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct v4l2_fwnode_endpoint upstream_ep = { .bus_type = 0 };
|
struct v4l2_mbus_framefmt *infmt;
|
struct v4l2_rect *crop, *compose;
|
int pad, ret;
|
|
if (sel->pad != CSI_SINK_PAD)
|
return -EINVAL;
|
|
ret = csi_get_upstream_endpoint(priv, &upstream_ep);
|
if (ret) {
|
v4l2_err(&priv->sd, "failed to find upstream endpoint\n");
|
return ret;
|
}
|
|
mutex_lock(&priv->lock);
|
|
if (priv->stream_count > 0) {
|
ret = -EBUSY;
|
goto out;
|
}
|
|
infmt = __csi_get_fmt(priv, cfg, CSI_SINK_PAD, sel->which);
|
crop = __csi_get_crop(priv, cfg, sel->which);
|
compose = __csi_get_compose(priv, cfg, sel->which);
|
|
switch (sel->target) {
|
case V4L2_SEL_TGT_CROP:
|
/*
|
* Modifying the crop rectangle always changes the format on
|
* the source pads. If the KEEP_CONFIG flag is set, just return
|
* the current crop rectangle.
|
*/
|
if (sel->flags & V4L2_SEL_FLAG_KEEP_CONFIG) {
|
sel->r = priv->crop;
|
if (sel->which == V4L2_SUBDEV_FORMAT_TRY)
|
*crop = sel->r;
|
goto out;
|
}
|
|
csi_try_crop(priv, &sel->r, cfg, infmt, &upstream_ep);
|
|
*crop = sel->r;
|
|
/* Reset scaling to 1:1 */
|
compose->width = crop->width;
|
compose->height = crop->height;
|
break;
|
case V4L2_SEL_TGT_COMPOSE:
|
/*
|
* Modifying the compose rectangle always changes the format on
|
* the source pads. If the KEEP_CONFIG flag is set, just return
|
* the current compose rectangle.
|
*/
|
if (sel->flags & V4L2_SEL_FLAG_KEEP_CONFIG) {
|
sel->r = priv->compose;
|
if (sel->which == V4L2_SUBDEV_FORMAT_TRY)
|
*compose = sel->r;
|
goto out;
|
}
|
|
sel->r.left = 0;
|
sel->r.top = 0;
|
ret = csi_set_scale(&sel->r.width, crop->width, sel->flags);
|
if (ret)
|
goto out;
|
ret = csi_set_scale(&sel->r.height, crop->height, sel->flags);
|
if (ret)
|
goto out;
|
|
*compose = sel->r;
|
break;
|
default:
|
ret = -EINVAL;
|
goto out;
|
}
|
|
/* Reset source pads to sink compose rectangle */
|
for (pad = CSI_SINK_PAD + 1; pad < CSI_NUM_PADS; pad++) {
|
struct v4l2_mbus_framefmt *outfmt;
|
|
outfmt = __csi_get_fmt(priv, cfg, pad, sel->which);
|
outfmt->width = compose->width;
|
outfmt->height = compose->height;
|
}
|
|
out:
|
mutex_unlock(&priv->lock);
|
return ret;
|
}
|
|
static int csi_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
|
struct v4l2_event_subscription *sub)
|
{
|
if (sub->type != V4L2_EVENT_IMX_FRAME_INTERVAL_ERROR)
|
return -EINVAL;
|
if (sub->id != 0)
|
return -EINVAL;
|
|
return v4l2_event_subscribe(fh, sub, 0, NULL);
|
}
|
|
static int csi_unsubscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
|
struct v4l2_event_subscription *sub)
|
{
|
return v4l2_event_unsubscribe(fh, sub);
|
}
|
|
static int csi_registered(struct v4l2_subdev *sd)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct ipu_csi *csi;
|
int i, ret;
|
u32 code;
|
|
/* get handle to IPU CSI */
|
csi = ipu_csi_get(priv->ipu, priv->csi_id);
|
if (IS_ERR(csi)) {
|
v4l2_err(&priv->sd, "failed to get CSI%d\n", priv->csi_id);
|
return PTR_ERR(csi);
|
}
|
priv->csi = csi;
|
|
for (i = 0; i < CSI_NUM_PADS; i++) {
|
code = 0;
|
if (i != CSI_SINK_PAD)
|
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],
|
640, 480, code, V4L2_FIELD_NONE,
|
&priv->cc[i]);
|
if (ret)
|
goto put_csi;
|
|
/* init default frame interval */
|
priv->frame_interval[i].numerator = 1;
|
priv->frame_interval[i].denominator = 30;
|
}
|
|
/* disable frame skipping */
|
priv->skip = &csi_skip[0];
|
|
/* init default crop and compose rectangle sizes */
|
priv->crop.width = 640;
|
priv->crop.height = 480;
|
priv->compose.width = 640;
|
priv->compose.height = 480;
|
|
priv->fim = imx_media_fim_init(&priv->sd);
|
if (IS_ERR(priv->fim)) {
|
ret = PTR_ERR(priv->fim);
|
goto put_csi;
|
}
|
|
priv->vdev = imx_media_capture_device_init(priv->sd.dev,
|
&priv->sd,
|
CSI_SRC_PAD_IDMAC);
|
if (IS_ERR(priv->vdev)) {
|
ret = PTR_ERR(priv->vdev);
|
goto free_fim;
|
}
|
|
ret = imx_media_capture_device_register(priv->vdev);
|
if (ret)
|
goto remove_vdev;
|
|
return 0;
|
|
remove_vdev:
|
imx_media_capture_device_remove(priv->vdev);
|
free_fim:
|
if (priv->fim)
|
imx_media_fim_free(priv->fim);
|
put_csi:
|
ipu_csi_put(priv->csi);
|
return ret;
|
}
|
|
static void csi_unregistered(struct v4l2_subdev *sd)
|
{
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
|
imx_media_capture_device_unregister(priv->vdev);
|
imx_media_capture_device_remove(priv->vdev);
|
|
if (priv->fim)
|
imx_media_fim_free(priv->fim);
|
|
if (priv->csi)
|
ipu_csi_put(priv->csi);
|
}
|
|
/*
|
* The CSI has only one fwnode endpoint, at the sink pad. Verify the
|
* endpoint belongs to us, and return CSI_SINK_PAD.
|
*/
|
static int csi_get_fwnode_pad(struct media_entity *entity,
|
struct fwnode_endpoint *endpoint)
|
{
|
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
|
struct csi_priv *priv = v4l2_get_subdevdata(sd);
|
struct fwnode_handle *csi_port = dev_fwnode(priv->dev);
|
struct fwnode_handle *csi_ep;
|
int ret;
|
|
csi_ep = fwnode_get_next_child_node(csi_port, NULL);
|
|
ret = endpoint->local_fwnode == csi_ep ? CSI_SINK_PAD : -ENXIO;
|
|
fwnode_handle_put(csi_ep);
|
|
return ret;
|
}
|
|
static const struct media_entity_operations csi_entity_ops = {
|
.link_setup = csi_link_setup,
|
.link_validate = v4l2_subdev_link_validate,
|
.get_fwnode_pad = csi_get_fwnode_pad,
|
};
|
|
static const struct v4l2_subdev_core_ops csi_core_ops = {
|
.subscribe_event = csi_subscribe_event,
|
.unsubscribe_event = csi_unsubscribe_event,
|
};
|
|
static const struct v4l2_subdev_video_ops csi_video_ops = {
|
.g_frame_interval = csi_g_frame_interval,
|
.s_frame_interval = csi_s_frame_interval,
|
.s_stream = csi_s_stream,
|
};
|
|
static const struct v4l2_subdev_pad_ops csi_pad_ops = {
|
.init_cfg = imx_media_init_cfg,
|
.enum_mbus_code = csi_enum_mbus_code,
|
.enum_frame_size = csi_enum_frame_size,
|
.enum_frame_interval = csi_enum_frame_interval,
|
.get_fmt = csi_get_fmt,
|
.set_fmt = csi_set_fmt,
|
.get_selection = csi_get_selection,
|
.set_selection = csi_set_selection,
|
.link_validate = csi_link_validate,
|
};
|
|
static const struct v4l2_subdev_ops csi_subdev_ops = {
|
.core = &csi_core_ops,
|
.video = &csi_video_ops,
|
.pad = &csi_pad_ops,
|
};
|
|
static const struct v4l2_subdev_internal_ops csi_internal_ops = {
|
.registered = csi_registered,
|
.unregistered = csi_unregistered,
|
};
|
|
static int imx_csi_notify_bound(struct v4l2_async_notifier *notifier,
|
struct v4l2_subdev *sd,
|
struct v4l2_async_subdev *asd)
|
{
|
struct csi_priv *priv = notifier_to_dev(notifier);
|
struct media_pad *sink = &priv->sd.entity.pads[CSI_SINK_PAD];
|
|
/*
|
* If the subdev is a video mux, it must be one of the CSI
|
* muxes. Mark it as such via its group id.
|
*/
|
if (sd->entity.function == MEDIA_ENT_F_VID_MUX)
|
sd->grp_id = IMX_MEDIA_GRP_ID_CSI_MUX;
|
|
return v4l2_create_fwnode_links_to_pad(sd, sink);
|
}
|
|
static const struct v4l2_async_notifier_operations csi_notify_ops = {
|
.bound = imx_csi_notify_bound,
|
};
|
|
static int imx_csi_async_register(struct csi_priv *priv)
|
{
|
struct v4l2_async_subdev *asd = NULL;
|
struct fwnode_handle *ep;
|
unsigned int port;
|
int ret;
|
|
v4l2_async_notifier_init(&priv->notifier);
|
|
/* get this CSI's port id */
|
ret = fwnode_property_read_u32(dev_fwnode(priv->dev), "reg", &port);
|
if (ret < 0)
|
return ret;
|
|
ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(priv->dev->parent),
|
port, 0,
|
FWNODE_GRAPH_ENDPOINT_NEXT);
|
if (ep) {
|
asd = v4l2_async_notifier_add_fwnode_remote_subdev(
|
&priv->notifier, ep, sizeof(*asd));
|
|
fwnode_handle_put(ep);
|
|
if (IS_ERR(asd)) {
|
ret = PTR_ERR(asd);
|
/* OK if asd already exists */
|
if (ret != -EEXIST)
|
return ret;
|
}
|
}
|
|
priv->notifier.ops = &csi_notify_ops;
|
|
ret = v4l2_async_subdev_notifier_register(&priv->sd,
|
&priv->notifier);
|
if (ret)
|
return ret;
|
|
return v4l2_async_register_subdev(&priv->sd);
|
}
|
|
static int imx_csi_probe(struct platform_device *pdev)
|
{
|
struct ipu_client_platformdata *pdata;
|
struct pinctrl *pinctrl;
|
struct csi_priv *priv;
|
int i, ret;
|
|
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
|
if (!priv)
|
return -ENOMEM;
|
|
platform_set_drvdata(pdev, &priv->sd);
|
priv->dev = &pdev->dev;
|
|
ret = dma_set_coherent_mask(priv->dev, DMA_BIT_MASK(32));
|
if (ret)
|
return ret;
|
|
/* get parent IPU */
|
priv->ipu = dev_get_drvdata(priv->dev->parent);
|
|
/* get our CSI id */
|
pdata = priv->dev->platform_data;
|
priv->csi_id = pdata->csi;
|
priv->smfc_id = (priv->csi_id == 0) ? 0 : 2;
|
|
priv->active_output_pad = CSI_SRC_PAD_IDMAC;
|
|
timer_setup(&priv->eof_timeout_timer, csi_idmac_eof_timeout, 0);
|
spin_lock_init(&priv->irqlock);
|
|
v4l2_subdev_init(&priv->sd, &csi_subdev_ops);
|
v4l2_set_subdevdata(&priv->sd, priv);
|
priv->sd.internal_ops = &csi_internal_ops;
|
priv->sd.entity.ops = &csi_entity_ops;
|
priv->sd.entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
|
priv->sd.dev = &pdev->dev;
|
priv->sd.fwnode = of_fwnode_handle(pdata->of_node);
|
priv->sd.owner = THIS_MODULE;
|
priv->sd.flags = V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
|
priv->sd.grp_id = priv->csi_id ?
|
IMX_MEDIA_GRP_ID_IPU_CSI1 : IMX_MEDIA_GRP_ID_IPU_CSI0;
|
imx_media_grp_id_to_sd_name(priv->sd.name, sizeof(priv->sd.name),
|
priv->sd.grp_id, ipu_get_num(priv->ipu));
|
|
for (i = 0; i < CSI_NUM_PADS; i++)
|
priv->pad[i].flags = (i == CSI_SINK_PAD) ?
|
MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
|
|
ret = media_entity_pads_init(&priv->sd.entity, CSI_NUM_PADS,
|
priv->pad);
|
if (ret)
|
return ret;
|
|
mutex_init(&priv->lock);
|
|
v4l2_ctrl_handler_init(&priv->ctrl_hdlr, 0);
|
priv->sd.ctrl_handler = &priv->ctrl_hdlr;
|
|
/*
|
* The IPUv3 driver did not assign an of_node to this
|
* device. As a result, pinctrl does not automatically
|
* configure our pin groups, so we need to do that manually
|
* here, after setting this device's of_node.
|
*/
|
priv->dev->of_node = pdata->of_node;
|
pinctrl = devm_pinctrl_get_select_default(priv->dev);
|
if (IS_ERR(pinctrl)) {
|
ret = PTR_ERR(pinctrl);
|
dev_dbg(priv->dev,
|
"devm_pinctrl_get_select_default() failed: %d\n", ret);
|
if (ret != -ENODEV)
|
goto free;
|
}
|
|
ret = imx_csi_async_register(priv);
|
if (ret)
|
goto cleanup;
|
|
return 0;
|
|
cleanup:
|
v4l2_async_notifier_unregister(&priv->notifier);
|
v4l2_async_notifier_cleanup(&priv->notifier);
|
free:
|
v4l2_ctrl_handler_free(&priv->ctrl_hdlr);
|
mutex_destroy(&priv->lock);
|
return ret;
|
}
|
|
static int imx_csi_remove(struct platform_device *pdev)
|
{
|
struct v4l2_subdev *sd = platform_get_drvdata(pdev);
|
struct csi_priv *priv = sd_to_dev(sd);
|
|
v4l2_ctrl_handler_free(&priv->ctrl_hdlr);
|
mutex_destroy(&priv->lock);
|
v4l2_async_notifier_unregister(&priv->notifier);
|
v4l2_async_notifier_cleanup(&priv->notifier);
|
v4l2_async_unregister_subdev(sd);
|
media_entity_cleanup(&sd->entity);
|
|
return 0;
|
}
|
|
static const struct platform_device_id imx_csi_ids[] = {
|
{ .name = "imx-ipuv3-csi" },
|
{ },
|
};
|
MODULE_DEVICE_TABLE(platform, imx_csi_ids);
|
|
static struct platform_driver imx_csi_driver = {
|
.probe = imx_csi_probe,
|
.remove = imx_csi_remove,
|
.id_table = imx_csi_ids,
|
.driver = {
|
.name = "imx-ipuv3-csi",
|
},
|
};
|
module_platform_driver(imx_csi_driver);
|
|
MODULE_DESCRIPTION("i.MX CSI subdev driver");
|
MODULE_AUTHOR("Steve Longerbeam <steve_longerbeam@mentor.com>");
|
MODULE_LICENSE("GPL");
|
MODULE_ALIAS("platform:imx-ipuv3-csi");
|
