From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/drivers/staging/media/imx/imx-media-dev.c | 560 ++++---------------------------------------------------
1 files changed, 45 insertions(+), 515 deletions(-)
diff --git a/kernel/drivers/staging/media/imx/imx-media-dev.c b/kernel/drivers/staging/media/imx/imx-media-dev.c
index b0be80f..338b8bd 100644
--- a/kernel/drivers/staging/media/imx/imx-media-dev.c
+++ b/kernel/drivers/staging/media/imx/imx-media-dev.c
@@ -1,155 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* V4L2 Media Controller Driver for Freescale i.MX5/6 SOC
*
- * Copyright (c) 2016 Mentor Graphics Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * Copyright (c) 2016-2019 Mentor Graphics Inc.
*/
-#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/module.h>
-#include <linux/of_graph.h>
-#include <linux/of_platform.h>
-#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.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-async.h>
#include <media/v4l2-event.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-mc.h>
-#include <video/imx-ipu-v3.h>
#include <media/imx.h>
#include "imx-media.h"
static inline struct imx_media_dev *notifier2dev(struct v4l2_async_notifier *n)
{
- return container_of(n, struct imx_media_dev, subdev_notifier);
-}
-
-/*
- * Find an asd by fwnode or device name. This is called during
- * driver load to form the async subdev list and bind them.
- */
-static struct v4l2_async_subdev *
-find_async_subdev(struct imx_media_dev *imxmd,
- struct fwnode_handle *fwnode,
- const char *devname)
-{
- struct imx_media_async_subdev *imxasd;
- struct v4l2_async_subdev *asd;
-
- list_for_each_entry(imxasd, &imxmd->asd_list, list) {
- asd = &imxasd->asd;
- switch (asd->match_type) {
- case V4L2_ASYNC_MATCH_FWNODE:
- if (fwnode && asd->match.fwnode == fwnode)
- return asd;
- break;
- case V4L2_ASYNC_MATCH_DEVNAME:
- if (devname && !strcmp(asd->match.device_name,
- devname))
- return asd;
- break;
- default:
- break;
- }
- }
-
- return NULL;
-}
-
-
-/*
- * Adds a subdev to the async subdev list. If fwnode is non-NULL, adds
- * the async as a V4L2_ASYNC_MATCH_FWNODE match type, otherwise as
- * a V4L2_ASYNC_MATCH_DEVNAME match type using the dev_name of the
- * given platform_device. This is called during driver load when
- * forming the async subdev list.
- */
-int imx_media_add_async_subdev(struct imx_media_dev *imxmd,
- struct fwnode_handle *fwnode,
- struct platform_device *pdev)
-{
- struct device_node *np = to_of_node(fwnode);
- struct imx_media_async_subdev *imxasd;
- struct v4l2_async_subdev *asd;
- const char *devname = NULL;
- int ret = 0;
-
- mutex_lock(&imxmd->mutex);
-
- if (pdev)
- devname = dev_name(&pdev->dev);
-
- /* return -EEXIST if this asd already added */
- if (find_async_subdev(imxmd, fwnode, devname)) {
- dev_dbg(imxmd->md.dev, "%s: already added %s\n",
- __func__, np ? np->name : devname);
- ret = -EEXIST;
- goto out;
- }
-
- imxasd = devm_kzalloc(imxmd->md.dev, sizeof(*imxasd), GFP_KERNEL);
- if (!imxasd) {
- ret = -ENOMEM;
- goto out;
- }
- asd = &imxasd->asd;
-
- if (fwnode) {
- asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
- asd->match.fwnode = fwnode;
- } else {
- asd->match_type = V4L2_ASYNC_MATCH_DEVNAME;
- asd->match.device_name = devname;
- imxasd->pdev = pdev;
- }
-
- list_add_tail(&imxasd->list, &imxmd->asd_list);
-
- imxmd->subdev_notifier.num_subdevs++;
-
- dev_dbg(imxmd->md.dev, "%s: added %s, match type %s\n",
- __func__, np ? np->name : devname, np ? "FWNODE" : "DEVNAME");
-
-out:
- mutex_unlock(&imxmd->mutex);
- return ret;
-}
-
-/*
- * get IPU from this CSI and add it to the list of IPUs
- * the media driver will control.
- */
-static int imx_media_get_ipu(struct imx_media_dev *imxmd,
- struct v4l2_subdev *csi_sd)
-{
- struct ipu_soc *ipu;
- int ipu_id;
-
- ipu = dev_get_drvdata(csi_sd->dev->parent);
- if (!ipu) {
- v4l2_err(&imxmd->v4l2_dev,
- "CSI %s has no parent IPU!\n", csi_sd->name);
- return -ENODEV;
- }
-
- ipu_id = ipu_get_num(ipu);
- if (ipu_id > 1) {
- v4l2_err(&imxmd->v4l2_dev, "invalid IPU id %d!\n", ipu_id);
- return -ENODEV;
- }
-
- if (!imxmd->ipu[ipu_id])
- imxmd->ipu[ipu_id] = ipu;
-
- return 0;
+ return container_of(n, struct imx_media_dev, notifier);
}
/* async subdev bound notifier */
@@ -158,422 +23,81 @@
struct v4l2_async_subdev *asd)
{
struct imx_media_dev *imxmd = notifier2dev(notifier);
- int ret = 0;
-
- mutex_lock(&imxmd->mutex);
-
- if (sd->grp_id & IMX_MEDIA_GRP_ID_CSI) {
- ret = imx_media_get_ipu(imxmd, sd);
- if (ret)
- goto out;
- }
-
- v4l2_info(&imxmd->v4l2_dev, "subdev %s bound\n", sd->name);
-out:
- mutex_unlock(&imxmd->mutex);
- return ret;
-}
-
-/*
- * create the media links for all subdevs that registered async.
- * Called after all async subdevs have bound.
- */
-static int imx_media_create_links(struct v4l2_async_notifier *notifier)
-{
- struct imx_media_dev *imxmd = notifier2dev(notifier);
- struct v4l2_subdev *sd;
int ret;
- /*
- * Only links are created between subdevices that are known
- * to the async notifier. If there are other non-async subdevices,
- * they were created internally by some subdevice (smiapp is one
- * example). In those cases it is expected the subdevice is
- * responsible for creating those internal links.
- */
- list_for_each_entry(sd, ¬ifier->done, async_list) {
- switch (sd->grp_id) {
- case IMX_MEDIA_GRP_ID_VDIC:
- case IMX_MEDIA_GRP_ID_IC_PRP:
- case IMX_MEDIA_GRP_ID_IC_PRPENC:
- case IMX_MEDIA_GRP_ID_IC_PRPVF:
- case IMX_MEDIA_GRP_ID_CSI0:
- case IMX_MEDIA_GRP_ID_CSI1:
- ret = imx_media_create_internal_links(imxmd, sd);
- if (ret)
- return ret;
- /*
- * the CSIs straddle between the external and the IPU
- * internal entities, so create the external links
- * to the CSI sink pads.
- */
- if (sd->grp_id & IMX_MEDIA_GRP_ID_CSI)
- imx_media_create_csi_of_links(imxmd, sd);
- break;
- default:
- /* this is an external fwnode subdev */
- imx_media_create_of_links(imxmd, sd);
- break;
- }
- }
-
- return 0;
-}
-
-/*
- * adds given video device to given imx-media source pad vdev list.
- * Continues upstream from the pad entity's sink pads.
- */
-static int imx_media_add_vdev_to_pad(struct imx_media_dev *imxmd,
- struct imx_media_video_dev *vdev,
- struct media_pad *srcpad)
-{
- struct media_entity *entity = srcpad->entity;
- struct imx_media_pad_vdev *pad_vdev;
- struct list_head *pad_vdev_list;
- struct media_link *link;
- struct v4l2_subdev *sd;
- int i, ret;
-
- /* skip this entity if not a v4l2_subdev */
- if (!is_media_entity_v4l2_subdev(entity))
- return 0;
-
- sd = media_entity_to_v4l2_subdev(entity);
-
- pad_vdev_list = to_pad_vdev_list(sd, srcpad->index);
- if (!pad_vdev_list) {
- v4l2_warn(&imxmd->v4l2_dev, "%s:%u has no vdev list!\n",
- entity->name, srcpad->index);
- /*
- * shouldn't happen, but no reason to fail driver load,
- * just skip this entity.
- */
- return 0;
- }
-
- /* just return if we've been here before */
- list_for_each_entry(pad_vdev, pad_vdev_list, list) {
- if (pad_vdev->vdev == vdev)
- return 0;
- }
-
- dev_dbg(imxmd->md.dev, "adding %s to pad %s:%u\n",
- vdev->vfd->entity.name, entity->name, srcpad->index);
-
- pad_vdev = devm_kzalloc(imxmd->md.dev, sizeof(*pad_vdev), GFP_KERNEL);
- if (!pad_vdev)
- return -ENOMEM;
-
- /* attach this vdev to this pad */
- pad_vdev->vdev = vdev;
- list_add_tail(&pad_vdev->list, pad_vdev_list);
-
- /* move upstream from this entity's sink pads */
- for (i = 0; i < entity->num_pads; i++) {
- struct media_pad *pad = &entity->pads[i];
-
- if (!(pad->flags & MEDIA_PAD_FL_SINK))
- continue;
-
- list_for_each_entry(link, &entity->links, list) {
- if (link->sink != pad)
- continue;
- ret = imx_media_add_vdev_to_pad(imxmd, vdev,
- link->source);
- if (ret)
- return ret;
- }
- }
-
- return 0;
-}
-
-/*
- * For every subdevice, allocate an array of list_head's, one list_head
- * for each pad, to hold the list of video devices reachable from that
- * pad.
- */
-static int imx_media_alloc_pad_vdev_lists(struct imx_media_dev *imxmd)
-{
- struct list_head *vdev_lists;
- struct media_entity *entity;
- struct v4l2_subdev *sd;
- int i;
-
- list_for_each_entry(sd, &imxmd->v4l2_dev.subdevs, list) {
- entity = &sd->entity;
- vdev_lists = devm_kcalloc(
- imxmd->md.dev,
- entity->num_pads, sizeof(*vdev_lists),
- GFP_KERNEL);
- if (!vdev_lists)
- return -ENOMEM;
-
- /* attach to the subdev's host private pointer */
- sd->host_priv = vdev_lists;
-
- for (i = 0; i < entity->num_pads; i++)
- INIT_LIST_HEAD(to_pad_vdev_list(sd, i));
- }
-
- return 0;
-}
-
-/* form the vdev lists in all imx-media source pads */
-static int imx_media_create_pad_vdev_lists(struct imx_media_dev *imxmd)
-{
- struct imx_media_video_dev *vdev;
- struct media_link *link;
- int ret;
-
- ret = imx_media_alloc_pad_vdev_lists(imxmd);
- if (ret)
- return ret;
-
- list_for_each_entry(vdev, &imxmd->vdev_list, list) {
- link = list_first_entry(&vdev->vfd->entity.links,
- struct media_link, list);
- ret = imx_media_add_vdev_to_pad(imxmd, vdev, link->source);
+ if (sd->grp_id & IMX_MEDIA_GRP_ID_IPU_CSI) {
+ /* register the IPU internal subdevs */
+ ret = imx_media_register_ipu_internal_subdevs(imxmd, sd);
if (ret)
return ret;
}
+
+ dev_dbg(imxmd->md.dev, "subdev %s bound\n", sd->name);
return 0;
}
/* async subdev complete notifier */
-static int imx_media_probe_complete(struct v4l2_async_notifier *notifier)
+static int imx6_media_probe_complete(struct v4l2_async_notifier *notifier)
{
struct imx_media_dev *imxmd = notifier2dev(notifier);
int ret;
+ /* call the imx5/6/7 common probe completion handler */
+ ret = imx_media_probe_complete(notifier);
+ if (ret)
+ return ret;
+
mutex_lock(&imxmd->mutex);
- ret = imx_media_create_links(notifier);
- if (ret)
+ imxmd->m2m_vdev = imx_media_csc_scaler_device_init(imxmd);
+ if (IS_ERR(imxmd->m2m_vdev)) {
+ ret = PTR_ERR(imxmd->m2m_vdev);
+ imxmd->m2m_vdev = NULL;
goto unlock;
+ }
- ret = imx_media_create_pad_vdev_lists(imxmd);
- if (ret)
- goto unlock;
-
- ret = v4l2_device_register_subdev_nodes(&imxmd->v4l2_dev);
+ ret = imx_media_csc_scaler_device_register(imxmd->m2m_vdev);
unlock:
mutex_unlock(&imxmd->mutex);
- if (ret)
- return ret;
-
- return media_device_register(&imxmd->md);
+ return ret;
}
-static const struct v4l2_async_notifier_operations imx_media_subdev_ops = {
+/* async subdev complete notifier */
+static const struct v4l2_async_notifier_operations imx_media_notifier_ops = {
.bound = imx_media_subdev_bound,
- .complete = imx_media_probe_complete,
-};
-
-/*
- * adds controls to a video device from an entity subdevice.
- * Continues upstream from the entity's sink pads.
- */
-static int imx_media_inherit_controls(struct imx_media_dev *imxmd,
- struct video_device *vfd,
- struct media_entity *entity)
-{
- int i, ret = 0;
-
- if (is_media_entity_v4l2_subdev(entity)) {
- struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
-
- dev_dbg(imxmd->md.dev,
- "adding controls to %s from %s\n",
- vfd->entity.name, sd->entity.name);
-
- ret = v4l2_ctrl_add_handler(vfd->ctrl_handler,
- sd->ctrl_handler,
- NULL);
- if (ret)
- return ret;
- }
-
- /* move upstream */
- for (i = 0; i < entity->num_pads; i++) {
- struct media_pad *pad, *spad = &entity->pads[i];
-
- if (!(spad->flags & MEDIA_PAD_FL_SINK))
- continue;
-
- pad = media_entity_remote_pad(spad);
- if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
- continue;
-
- ret = imx_media_inherit_controls(imxmd, vfd, pad->entity);
- if (ret)
- break;
- }
-
- return ret;
-}
-
-static int imx_media_link_notify(struct media_link *link, u32 flags,
- unsigned int notification)
-{
- struct media_entity *source = link->source->entity;
- struct imx_media_pad_vdev *pad_vdev;
- struct list_head *pad_vdev_list;
- struct imx_media_dev *imxmd;
- struct video_device *vfd;
- struct v4l2_subdev *sd;
- int pad_idx, ret;
-
- ret = v4l2_pipeline_link_notify(link, flags, notification);
- if (ret)
- return ret;
-
- /* don't bother if source is not a subdev */
- if (!is_media_entity_v4l2_subdev(source))
- return 0;
-
- sd = media_entity_to_v4l2_subdev(source);
- pad_idx = link->source->index;
-
- imxmd = dev_get_drvdata(sd->v4l2_dev->dev);
-
- pad_vdev_list = to_pad_vdev_list(sd, pad_idx);
- if (!pad_vdev_list) {
- /* shouldn't happen, but no reason to fail link setup */
- return 0;
- }
-
- /*
- * Before disabling a link, reset controls for all video
- * devices reachable from this link.
- *
- * After enabling a link, refresh controls for all video
- * devices reachable from this link.
- */
- if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH &&
- !(flags & MEDIA_LNK_FL_ENABLED)) {
- list_for_each_entry(pad_vdev, pad_vdev_list, list) {
- vfd = pad_vdev->vdev->vfd;
- dev_dbg(imxmd->md.dev,
- "reset controls for %s\n",
- vfd->entity.name);
- v4l2_ctrl_handler_free(vfd->ctrl_handler);
- v4l2_ctrl_handler_init(vfd->ctrl_handler, 0);
- }
- } else if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH &&
- (link->flags & MEDIA_LNK_FL_ENABLED)) {
- list_for_each_entry(pad_vdev, pad_vdev_list, list) {
- vfd = pad_vdev->vdev->vfd;
- dev_dbg(imxmd->md.dev,
- "refresh controls for %s\n",
- vfd->entity.name);
- ret = imx_media_inherit_controls(imxmd, vfd,
- &vfd->entity);
- if (ret)
- break;
- }
- }
-
- return ret;
-}
-
-static const struct media_device_ops imx_media_md_ops = {
- .link_notify = imx_media_link_notify,
+ .complete = imx6_media_probe_complete,
};
static int imx_media_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
- struct imx_media_async_subdev *imxasd;
- struct v4l2_async_subdev **subdevs;
struct imx_media_dev *imxmd;
- int num_subdevs, i, ret;
+ int ret;
- imxmd = devm_kzalloc(dev, sizeof(*imxmd), GFP_KERNEL);
- if (!imxmd)
- return -ENOMEM;
-
- dev_set_drvdata(dev, imxmd);
-
- strlcpy(imxmd->md.model, "imx-media", sizeof(imxmd->md.model));
- imxmd->md.ops = &imx_media_md_ops;
- imxmd->md.dev = dev;
-
- mutex_init(&imxmd->mutex);
-
- imxmd->v4l2_dev.mdev = &imxmd->md;
- strlcpy(imxmd->v4l2_dev.name, "imx-media",
- sizeof(imxmd->v4l2_dev.name));
-
- media_device_init(&imxmd->md);
-
- ret = v4l2_device_register(dev, &imxmd->v4l2_dev);
- if (ret < 0) {
- v4l2_err(&imxmd->v4l2_dev,
- "Failed to register v4l2_device: %d\n", ret);
- goto cleanup;
- }
-
- dev_set_drvdata(imxmd->v4l2_dev.dev, imxmd);
-
- INIT_LIST_HEAD(&imxmd->asd_list);
- INIT_LIST_HEAD(&imxmd->vdev_list);
+ imxmd = imx_media_dev_init(dev, NULL);
+ if (IS_ERR(imxmd))
+ return PTR_ERR(imxmd);
ret = imx_media_add_of_subdevs(imxmd, node);
if (ret) {
v4l2_err(&imxmd->v4l2_dev,
"add_of_subdevs failed with %d\n", ret);
- goto unreg_dev;
+ goto cleanup;
}
- ret = imx_media_add_internal_subdevs(imxmd);
- if (ret) {
- v4l2_err(&imxmd->v4l2_dev,
- "add_internal_subdevs failed with %d\n", ret);
- goto unreg_dev;
- }
-
- num_subdevs = imxmd->subdev_notifier.num_subdevs;
-
- /* no subdevs? just bail */
- if (num_subdevs == 0) {
- ret = -ENODEV;
- goto unreg_dev;
- }
-
- subdevs = devm_kcalloc(imxmd->md.dev, num_subdevs, sizeof(*subdevs),
- GFP_KERNEL);
- if (!subdevs) {
- ret = -ENOMEM;
- goto unreg_dev;
- }
-
- i = 0;
- list_for_each_entry(imxasd, &imxmd->asd_list, list)
- subdevs[i++] = &imxasd->asd;
-
- /* prepare the async subdev notifier and register it */
- imxmd->subdev_notifier.subdevs = subdevs;
- imxmd->subdev_notifier.ops = &imx_media_subdev_ops;
- ret = v4l2_async_notifier_register(&imxmd->v4l2_dev,
- &imxmd->subdev_notifier);
- if (ret) {
- v4l2_err(&imxmd->v4l2_dev,
- "v4l2_async_notifier_register failed with %d\n", ret);
- goto del_int;
- }
+ ret = imx_media_dev_notifier_register(imxmd, &imx_media_notifier_ops);
+ if (ret)
+ goto cleanup;
return 0;
-del_int:
- imx_media_remove_internal_subdevs(imxmd);
-unreg_dev:
- v4l2_device_unregister(&imxmd->v4l2_dev);
cleanup:
+ v4l2_async_notifier_cleanup(&imxmd->notifier);
+ v4l2_device_unregister(&imxmd->v4l2_dev);
media_device_cleanup(&imxmd->md);
+
return ret;
}
@@ -584,10 +108,16 @@
v4l2_info(&imxmd->v4l2_dev, "Removing imx-media\n");
- v4l2_async_notifier_unregister(&imxmd->subdev_notifier);
- imx_media_remove_internal_subdevs(imxmd);
- v4l2_device_unregister(&imxmd->v4l2_dev);
+ if (imxmd->m2m_vdev) {
+ imx_media_csc_scaler_device_unregister(imxmd->m2m_vdev);
+ imxmd->m2m_vdev = NULL;
+ }
+
+ v4l2_async_notifier_unregister(&imxmd->notifier);
+ imx_media_unregister_ipu_internal_subdevs(imxmd);
+ v4l2_async_notifier_cleanup(&imxmd->notifier);
media_device_unregister(&imxmd->md);
+ v4l2_device_unregister(&imxmd->v4l2_dev);
media_device_cleanup(&imxmd->md);
return 0;
--
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