From 23fa18eaa71266feff7ba8d83022d9e1cc83c65a Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:42:03 +0000
Subject: [PATCH] disable pwm7
---
kernel/drivers/staging/media/imx/imx-media-of.c | 263 +++++++---------------------------------------------
1 files changed, 35 insertions(+), 228 deletions(-)
diff --git a/kernel/drivers/staging/media/imx/imx-media-of.c b/kernel/drivers/staging/media/imx/imx-media-of.c
index 1647da2..82e13e9 100644
--- a/kernel/drivers/staging/media/imx/imx-media-of.c
+++ b/kernel/drivers/staging/media/imx/imx-media-of.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Media driver for Freescale i.MX5/6 SOC
*
* Open Firmware parsing.
*
* 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.
*/
#include <linux/of_platform.h>
#include <media/v4l2-ctrls.h>
@@ -20,121 +16,32 @@
#include <video/imx-ipu-v3.h>
#include "imx-media.h"
-static int of_get_port_count(const struct device_node *np)
+int imx_media_of_add_csi(struct imx_media_dev *imxmd,
+ struct device_node *csi_np)
{
- struct device_node *ports, *child;
- int num = 0;
+ struct v4l2_async_subdev *asd;
+ int ret = 0;
- /* check if this node has a ports subnode */
- ports = of_get_child_by_name(np, "ports");
- if (ports)
- np = ports;
-
- for_each_child_of_node(np, child)
- if (of_node_cmp(child->name, "port") == 0)
- num++;
-
- of_node_put(ports);
- return num;
-}
-
-/*
- * find the remote device node given local endpoint node
- */
-static bool of_get_remote(struct device_node *epnode,
- struct device_node **remote_node)
-{
- struct device_node *rp, *rpp;
- struct device_node *remote;
- bool is_csi_port;
-
- rp = of_graph_get_remote_port(epnode);
- rpp = of_graph_get_remote_port_parent(epnode);
-
- if (of_device_is_compatible(rpp, "fsl,imx6q-ipu")) {
- /* the remote is one of the CSI ports */
- remote = rp;
- of_node_put(rpp);
- is_csi_port = true;
- } else {
- remote = rpp;
- of_node_put(rp);
- is_csi_port = false;
+ if (!of_device_is_available(csi_np)) {
+ dev_dbg(imxmd->md.dev, "%s: %pOFn not enabled\n", __func__,
+ csi_np);
+ return -ENODEV;
}
- if (!of_device_is_available(remote)) {
- of_node_put(remote);
- *remote_node = NULL;
- } else {
- *remote_node = remote;
- }
-
- return is_csi_port;
-}
-
-static int
-of_parse_subdev(struct imx_media_dev *imxmd, struct device_node *sd_np,
- bool is_csi_port)
-{
- int i, num_ports, ret;
-
- if (!of_device_is_available(sd_np)) {
- dev_dbg(imxmd->md.dev, "%s: %s not enabled\n", __func__,
- sd_np->name);
- /* unavailable is not an error */
- return 0;
- }
-
- /* register this subdev with async notifier */
- ret = imx_media_add_async_subdev(imxmd, of_fwnode_handle(sd_np),
- NULL);
- if (ret) {
- if (ret == -EEXIST) {
- /* already added, everything is fine */
- return 0;
- }
-
- /* other error, can't continue */
- return ret;
- }
-
- /*
- * the ipu-csi has one sink port. The source pads are not
- * represented in the device tree by port nodes, but are
- * described by the internal pads and links later.
- */
- num_ports = is_csi_port ? 1 : of_get_port_count(sd_np);
-
- for (i = 0; i < num_ports; i++) {
- struct device_node *epnode = NULL, *port, *remote_np;
-
- port = is_csi_port ? sd_np : of_graph_get_port_by_id(sd_np, i);
- if (!port)
- continue;
-
- for_each_child_of_node(port, epnode) {
- bool remote_is_csi;
-
- remote_is_csi = of_get_remote(epnode, &remote_np);
- if (!remote_np)
- continue;
-
- ret = of_parse_subdev(imxmd, remote_np, remote_is_csi);
- of_node_put(remote_np);
- if (ret)
- break;
- }
-
- if (port != sd_np)
- of_node_put(port);
- if (ret) {
- of_node_put(epnode);
- break;
- }
+ /* add CSI fwnode to async notifier */
+ asd = v4l2_async_notifier_add_fwnode_subdev(&imxmd->notifier,
+ of_fwnode_handle(csi_np),
+ sizeof(*asd));
+ if (IS_ERR(asd)) {
+ ret = PTR_ERR(asd);
+ if (ret == -EEXIST)
+ dev_dbg(imxmd->md.dev, "%s: already added %pOFn\n",
+ __func__, csi_np);
}
return ret;
}
+EXPORT_SYMBOL_GPL(imx_media_of_add_csi);
int imx_media_add_of_subdevs(struct imx_media_dev *imxmd,
struct device_node *np)
@@ -147,123 +54,23 @@
if (!csi_np)
break;
- ret = of_parse_subdev(imxmd, csi_np, true);
- of_node_put(csi_np);
- if (ret)
- return ret;
+ ret = imx_media_of_add_csi(imxmd, csi_np);
+ if (ret) {
+ /* unavailable or already added is not an error */
+ if (ret == -ENODEV || ret == -EEXIST) {
+ of_node_put(csi_np);
+ continue;
+ }
+
+ /* other error, can't continue */
+ goto err_out;
+ }
}
return 0;
+
+err_out:
+ of_node_put(csi_np);
+ return ret;
}
-
-/*
- * Create a single media link to/from sd using a fwnode link.
- *
- * NOTE: this function assumes an OF port node is equivalent to
- * a media pad (port id equal to media pad index), and that an
- * OF endpoint node is equivalent to a media link.
- */
-static int create_of_link(struct imx_media_dev *imxmd,
- struct v4l2_subdev *sd,
- struct v4l2_fwnode_link *link)
-{
- struct v4l2_subdev *remote, *src, *sink;
- int src_pad, sink_pad;
-
- if (link->local_port >= sd->entity.num_pads)
- return -EINVAL;
-
- remote = imx_media_find_subdev_by_fwnode(imxmd, link->remote_node);
- if (!remote)
- return 0;
-
- if (sd->entity.pads[link->local_port].flags & MEDIA_PAD_FL_SINK) {
- src = remote;
- src_pad = link->remote_port;
- sink = sd;
- sink_pad = link->local_port;
- } else {
- src = sd;
- src_pad = link->local_port;
- sink = remote;
- sink_pad = link->remote_port;
- }
-
- /* make sure link doesn't already exist before creating */
- if (media_entity_find_link(&src->entity.pads[src_pad],
- &sink->entity.pads[sink_pad]))
- return 0;
-
- v4l2_info(sd->v4l2_dev, "%s:%d -> %s:%d\n",
- src->name, src_pad, sink->name, sink_pad);
-
- return media_create_pad_link(&src->entity, src_pad,
- &sink->entity, sink_pad, 0);
-}
-
-/*
- * Create media links to/from sd using its device-tree endpoints.
- */
-int imx_media_create_of_links(struct imx_media_dev *imxmd,
- struct v4l2_subdev *sd)
-{
- struct v4l2_fwnode_link link;
- struct device_node *ep;
- int ret;
-
- for_each_endpoint_of_node(sd->dev->of_node, ep) {
- ret = v4l2_fwnode_parse_link(of_fwnode_handle(ep), &link);
- if (ret)
- continue;
-
- ret = create_of_link(imxmd, sd, &link);
- v4l2_fwnode_put_link(&link);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-/*
- * Create media links to the given CSI subdevice's sink pads,
- * using its device-tree endpoints.
- */
-int imx_media_create_csi_of_links(struct imx_media_dev *imxmd,
- struct v4l2_subdev *csi)
-{
- struct device_node *csi_np = csi->dev->of_node;
- struct device_node *ep;
-
- for_each_child_of_node(csi_np, ep) {
- struct fwnode_handle *fwnode, *csi_ep;
- struct v4l2_fwnode_link link;
- int ret;
-
- memset(&link, 0, sizeof(link));
-
- link.local_node = of_fwnode_handle(csi_np);
- link.local_port = CSI_SINK_PAD;
-
- csi_ep = of_fwnode_handle(ep);
-
- fwnode = fwnode_graph_get_remote_endpoint(csi_ep);
- if (!fwnode)
- continue;
-
- fwnode = fwnode_get_parent(fwnode);
- fwnode_property_read_u32(fwnode, "reg", &link.remote_port);
- fwnode = fwnode_get_next_parent(fwnode);
- if (is_of_node(fwnode) &&
- of_node_cmp(to_of_node(fwnode)->name, "ports") == 0)
- fwnode = fwnode_get_next_parent(fwnode);
- link.remote_node = fwnode;
-
- ret = create_of_link(imxmd, csi, &link);
- fwnode_handle_put(link.remote_node);
- if (ret)
- return ret;
- }
-
- return 0;
-}
+EXPORT_SYMBOL_GPL(imx_media_add_of_subdevs);
--
Gitblit v1.6.2