![Linus Torvalds](/assets/img/avatar_default.png)
Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEABECAAYFAlSOD20ACgkQMUfUDdst+ylLPACg2QrW1oHhdTMT9WI8jihlHVRM 53kAoLeteByQ3iVwWurwwseRPiWa8+MI =OVRS -----END PGP SIGNATURE----- Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
912 lines
19 KiB
C
912 lines
19 KiB
C
/*
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* net/dsa/dsa.c - Hardware switch handling
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* Copyright (c) 2008-2009 Marvell Semiconductor
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* Copyright (c) 2013 Florian Fainelli <florian@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/ctype.h>
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#include <linux/device.h>
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#include <linux/hwmon.h>
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#include <linux/list.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <net/dsa.h>
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#include <linux/of.h>
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#include <linux/of_mdio.h>
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#include <linux/of_platform.h>
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#include <linux/sysfs.h>
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#include "dsa_priv.h"
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char dsa_driver_version[] = "0.1";
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/* switch driver registration ***********************************************/
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static DEFINE_MUTEX(dsa_switch_drivers_mutex);
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static LIST_HEAD(dsa_switch_drivers);
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void register_switch_driver(struct dsa_switch_driver *drv)
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{
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mutex_lock(&dsa_switch_drivers_mutex);
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list_add_tail(&drv->list, &dsa_switch_drivers);
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mutex_unlock(&dsa_switch_drivers_mutex);
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}
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EXPORT_SYMBOL_GPL(register_switch_driver);
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void unregister_switch_driver(struct dsa_switch_driver *drv)
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{
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mutex_lock(&dsa_switch_drivers_mutex);
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list_del_init(&drv->list);
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mutex_unlock(&dsa_switch_drivers_mutex);
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}
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EXPORT_SYMBOL_GPL(unregister_switch_driver);
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static struct dsa_switch_driver *
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dsa_switch_probe(struct device *host_dev, int sw_addr, char **_name)
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{
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struct dsa_switch_driver *ret;
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struct list_head *list;
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char *name;
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ret = NULL;
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name = NULL;
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mutex_lock(&dsa_switch_drivers_mutex);
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list_for_each(list, &dsa_switch_drivers) {
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struct dsa_switch_driver *drv;
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drv = list_entry(list, struct dsa_switch_driver, list);
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name = drv->probe(host_dev, sw_addr);
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if (name != NULL) {
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ret = drv;
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break;
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}
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}
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mutex_unlock(&dsa_switch_drivers_mutex);
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*_name = name;
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return ret;
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}
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/* hwmon support ************************************************************/
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#ifdef CONFIG_NET_DSA_HWMON
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static ssize_t temp1_input_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct dsa_switch *ds = dev_get_drvdata(dev);
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int temp, ret;
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ret = ds->drv->get_temp(ds, &temp);
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if (ret < 0)
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return ret;
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return sprintf(buf, "%d\n", temp * 1000);
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}
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static DEVICE_ATTR_RO(temp1_input);
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static ssize_t temp1_max_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct dsa_switch *ds = dev_get_drvdata(dev);
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int temp, ret;
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ret = ds->drv->get_temp_limit(ds, &temp);
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if (ret < 0)
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return ret;
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return sprintf(buf, "%d\n", temp * 1000);
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}
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static ssize_t temp1_max_store(struct device *dev,
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struct device_attribute *attr, const char *buf,
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size_t count)
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{
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struct dsa_switch *ds = dev_get_drvdata(dev);
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int temp, ret;
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ret = kstrtoint(buf, 0, &temp);
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if (ret < 0)
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return ret;
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ret = ds->drv->set_temp_limit(ds, DIV_ROUND_CLOSEST(temp, 1000));
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if (ret < 0)
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return ret;
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return count;
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}
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static DEVICE_ATTR(temp1_max, S_IRUGO, temp1_max_show, temp1_max_store);
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static ssize_t temp1_max_alarm_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct dsa_switch *ds = dev_get_drvdata(dev);
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bool alarm;
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int ret;
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ret = ds->drv->get_temp_alarm(ds, &alarm);
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if (ret < 0)
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return ret;
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return sprintf(buf, "%d\n", alarm);
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}
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static DEVICE_ATTR_RO(temp1_max_alarm);
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static struct attribute *dsa_hwmon_attrs[] = {
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&dev_attr_temp1_input.attr, /* 0 */
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&dev_attr_temp1_max.attr, /* 1 */
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&dev_attr_temp1_max_alarm.attr, /* 2 */
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NULL
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};
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static umode_t dsa_hwmon_attrs_visible(struct kobject *kobj,
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struct attribute *attr, int index)
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{
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struct device *dev = container_of(kobj, struct device, kobj);
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struct dsa_switch *ds = dev_get_drvdata(dev);
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struct dsa_switch_driver *drv = ds->drv;
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umode_t mode = attr->mode;
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if (index == 1) {
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if (!drv->get_temp_limit)
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mode = 0;
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else if (drv->set_temp_limit)
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mode |= S_IWUSR;
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} else if (index == 2 && !drv->get_temp_alarm) {
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mode = 0;
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}
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return mode;
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}
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static const struct attribute_group dsa_hwmon_group = {
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.attrs = dsa_hwmon_attrs,
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.is_visible = dsa_hwmon_attrs_visible,
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};
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__ATTRIBUTE_GROUPS(dsa_hwmon);
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#endif /* CONFIG_NET_DSA_HWMON */
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/* basic switch operations **************************************************/
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static struct dsa_switch *
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dsa_switch_setup(struct dsa_switch_tree *dst, int index,
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struct device *parent, struct device *host_dev)
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{
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struct dsa_chip_data *pd = dst->pd->chip + index;
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struct dsa_switch_driver *drv;
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struct dsa_switch *ds;
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int ret;
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char *name;
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int i;
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bool valid_name_found = false;
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/*
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* Probe for switch model.
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*/
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drv = dsa_switch_probe(host_dev, pd->sw_addr, &name);
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if (drv == NULL) {
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netdev_err(dst->master_netdev, "[%d]: could not detect attached switch\n",
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index);
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return ERR_PTR(-EINVAL);
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}
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netdev_info(dst->master_netdev, "[%d]: detected a %s switch\n",
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index, name);
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/*
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* Allocate and initialise switch state.
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*/
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ds = kzalloc(sizeof(*ds) + drv->priv_size, GFP_KERNEL);
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if (ds == NULL)
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return ERR_PTR(-ENOMEM);
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ds->dst = dst;
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ds->index = index;
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ds->pd = dst->pd->chip + index;
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ds->drv = drv;
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ds->master_dev = host_dev;
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/*
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* Validate supplied switch configuration.
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*/
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for (i = 0; i < DSA_MAX_PORTS; i++) {
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char *name;
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name = pd->port_names[i];
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if (name == NULL)
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continue;
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if (!strcmp(name, "cpu")) {
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if (dst->cpu_switch != -1) {
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netdev_err(dst->master_netdev,
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"multiple cpu ports?!\n");
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ret = -EINVAL;
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goto out;
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}
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dst->cpu_switch = index;
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dst->cpu_port = i;
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} else if (!strcmp(name, "dsa")) {
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ds->dsa_port_mask |= 1 << i;
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} else {
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ds->phys_port_mask |= 1 << i;
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}
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valid_name_found = true;
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}
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if (!valid_name_found && i == DSA_MAX_PORTS) {
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ret = -EINVAL;
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goto out;
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}
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/* Make the built-in MII bus mask match the number of ports,
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* switch drivers can override this later
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*/
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ds->phys_mii_mask = ds->phys_port_mask;
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/*
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* If the CPU connects to this switch, set the switch tree
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* tagging protocol to the preferred tagging format of this
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* switch.
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*/
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if (dst->cpu_switch == index) {
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switch (drv->tag_protocol) {
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#ifdef CONFIG_NET_DSA_TAG_DSA
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case DSA_TAG_PROTO_DSA:
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dst->rcv = dsa_netdev_ops.rcv;
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break;
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#endif
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#ifdef CONFIG_NET_DSA_TAG_EDSA
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case DSA_TAG_PROTO_EDSA:
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dst->rcv = edsa_netdev_ops.rcv;
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break;
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#endif
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#ifdef CONFIG_NET_DSA_TAG_TRAILER
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case DSA_TAG_PROTO_TRAILER:
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dst->rcv = trailer_netdev_ops.rcv;
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break;
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#endif
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#ifdef CONFIG_NET_DSA_TAG_BRCM
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case DSA_TAG_PROTO_BRCM:
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dst->rcv = brcm_netdev_ops.rcv;
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break;
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#endif
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case DSA_TAG_PROTO_NONE:
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break;
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default:
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ret = -ENOPROTOOPT;
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goto out;
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}
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dst->tag_protocol = drv->tag_protocol;
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}
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/*
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* Do basic register setup.
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*/
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ret = drv->setup(ds);
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if (ret < 0)
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goto out;
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ret = drv->set_addr(ds, dst->master_netdev->dev_addr);
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if (ret < 0)
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goto out;
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ds->slave_mii_bus = mdiobus_alloc();
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if (ds->slave_mii_bus == NULL) {
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ret = -ENOMEM;
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goto out;
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}
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dsa_slave_mii_bus_init(ds);
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ret = mdiobus_register(ds->slave_mii_bus);
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if (ret < 0)
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goto out_free;
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/*
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* Create network devices for physical switch ports.
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*/
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for (i = 0; i < DSA_MAX_PORTS; i++) {
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struct net_device *slave_dev;
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if (!(ds->phys_port_mask & (1 << i)))
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continue;
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slave_dev = dsa_slave_create(ds, parent, i, pd->port_names[i]);
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if (slave_dev == NULL) {
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netdev_err(dst->master_netdev, "[%d]: can't create dsa slave device for port %d(%s)\n",
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index, i, pd->port_names[i]);
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continue;
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}
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ds->ports[i] = slave_dev;
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}
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#ifdef CONFIG_NET_DSA_HWMON
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/* If the switch provides a temperature sensor,
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* register with hardware monitoring subsystem.
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* Treat registration error as non-fatal and ignore it.
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*/
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if (drv->get_temp) {
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const char *netname = netdev_name(dst->master_netdev);
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char hname[IFNAMSIZ + 1];
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int i, j;
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/* Create valid hwmon 'name' attribute */
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for (i = j = 0; i < IFNAMSIZ && netname[i]; i++) {
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if (isalnum(netname[i]))
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hname[j++] = netname[i];
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}
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hname[j] = '\0';
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scnprintf(ds->hwmon_name, sizeof(ds->hwmon_name), "%s_dsa%d",
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hname, index);
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ds->hwmon_dev = hwmon_device_register_with_groups(NULL,
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ds->hwmon_name, ds, dsa_hwmon_groups);
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if (IS_ERR(ds->hwmon_dev))
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ds->hwmon_dev = NULL;
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}
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#endif /* CONFIG_NET_DSA_HWMON */
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return ds;
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out_free:
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mdiobus_free(ds->slave_mii_bus);
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out:
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kfree(ds);
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return ERR_PTR(ret);
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}
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static void dsa_switch_destroy(struct dsa_switch *ds)
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{
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#ifdef CONFIG_NET_DSA_HWMON
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if (ds->hwmon_dev)
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hwmon_device_unregister(ds->hwmon_dev);
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#endif
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}
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#ifdef CONFIG_PM_SLEEP
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static int dsa_switch_suspend(struct dsa_switch *ds)
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{
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int i, ret = 0;
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/* Suspend slave network devices */
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for (i = 0; i < DSA_MAX_PORTS; i++) {
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if (!(ds->phys_port_mask & (1 << i)))
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continue;
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ret = dsa_slave_suspend(ds->ports[i]);
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if (ret)
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return ret;
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}
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if (ds->drv->suspend)
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ret = ds->drv->suspend(ds);
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return ret;
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}
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static int dsa_switch_resume(struct dsa_switch *ds)
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{
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int i, ret = 0;
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if (ds->drv->resume)
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ret = ds->drv->resume(ds);
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if (ret)
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return ret;
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/* Resume slave network devices */
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for (i = 0; i < DSA_MAX_PORTS; i++) {
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if (!(ds->phys_port_mask & (1 << i)))
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continue;
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ret = dsa_slave_resume(ds->ports[i]);
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if (ret)
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return ret;
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}
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return 0;
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}
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#endif
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/* link polling *************************************************************/
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static void dsa_link_poll_work(struct work_struct *ugly)
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{
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struct dsa_switch_tree *dst;
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int i;
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dst = container_of(ugly, struct dsa_switch_tree, link_poll_work);
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for (i = 0; i < dst->pd->nr_chips; i++) {
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struct dsa_switch *ds = dst->ds[i];
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if (ds != NULL && ds->drv->poll_link != NULL)
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ds->drv->poll_link(ds);
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}
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mod_timer(&dst->link_poll_timer, round_jiffies(jiffies + HZ));
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}
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static void dsa_link_poll_timer(unsigned long _dst)
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{
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struct dsa_switch_tree *dst = (void *)_dst;
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schedule_work(&dst->link_poll_work);
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}
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/* platform driver init and cleanup *****************************************/
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static int dev_is_class(struct device *dev, void *class)
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{
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if (dev->class != NULL && !strcmp(dev->class->name, class))
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return 1;
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return 0;
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}
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static struct device *dev_find_class(struct device *parent, char *class)
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{
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if (dev_is_class(parent, class)) {
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get_device(parent);
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return parent;
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}
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return device_find_child(parent, class, dev_is_class);
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}
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struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev)
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{
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struct device *d;
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d = dev_find_class(dev, "mdio_bus");
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if (d != NULL) {
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struct mii_bus *bus;
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bus = to_mii_bus(d);
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put_device(d);
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return bus;
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}
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return NULL;
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}
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EXPORT_SYMBOL_GPL(dsa_host_dev_to_mii_bus);
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static struct net_device *dev_to_net_device(struct device *dev)
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{
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struct device *d;
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d = dev_find_class(dev, "net");
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if (d != NULL) {
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struct net_device *nd;
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nd = to_net_dev(d);
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dev_hold(nd);
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put_device(d);
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return nd;
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}
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return NULL;
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}
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#ifdef CONFIG_OF
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static int dsa_of_setup_routing_table(struct dsa_platform_data *pd,
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struct dsa_chip_data *cd,
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int chip_index,
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struct device_node *link)
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{
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int ret;
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const __be32 *reg;
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int link_port_addr;
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int link_sw_addr;
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struct device_node *parent_sw;
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int len;
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parent_sw = of_get_parent(link);
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if (!parent_sw)
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return -EINVAL;
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reg = of_get_property(parent_sw, "reg", &len);
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if (!reg || (len != sizeof(*reg) * 2))
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return -EINVAL;
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link_sw_addr = be32_to_cpup(reg + 1);
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if (link_sw_addr >= pd->nr_chips)
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return -EINVAL;
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/* First time routing table allocation */
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if (!cd->rtable) {
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cd->rtable = kmalloc_array(pd->nr_chips, sizeof(s8),
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GFP_KERNEL);
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if (!cd->rtable)
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return -ENOMEM;
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/* default to no valid uplink/downlink */
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memset(cd->rtable, -1, pd->nr_chips * sizeof(s8));
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}
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reg = of_get_property(link, "reg", NULL);
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if (!reg) {
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ret = -EINVAL;
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goto out;
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}
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link_port_addr = be32_to_cpup(reg);
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cd->rtable[link_sw_addr] = link_port_addr;
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return 0;
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out:
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kfree(cd->rtable);
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return ret;
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}
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static void dsa_of_free_platform_data(struct dsa_platform_data *pd)
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{
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int i;
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int port_index;
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for (i = 0; i < pd->nr_chips; i++) {
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port_index = 0;
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while (port_index < DSA_MAX_PORTS) {
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kfree(pd->chip[i].port_names[port_index]);
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port_index++;
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}
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kfree(pd->chip[i].rtable);
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}
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kfree(pd->chip);
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}
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static int dsa_of_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct device_node *child, *mdio, *ethernet, *port, *link;
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struct mii_bus *mdio_bus;
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struct platform_device *ethernet_dev;
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struct dsa_platform_data *pd;
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struct dsa_chip_data *cd;
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const char *port_name;
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int chip_index, port_index;
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const unsigned int *sw_addr, *port_reg;
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u32 eeprom_len;
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int ret;
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mdio = of_parse_phandle(np, "dsa,mii-bus", 0);
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if (!mdio)
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return -EINVAL;
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mdio_bus = of_mdio_find_bus(mdio);
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if (!mdio_bus)
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return -EINVAL;
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ethernet = of_parse_phandle(np, "dsa,ethernet", 0);
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if (!ethernet)
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return -EINVAL;
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ethernet_dev = of_find_device_by_node(ethernet);
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if (!ethernet_dev)
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return -ENODEV;
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pd = kzalloc(sizeof(*pd), GFP_KERNEL);
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if (!pd)
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return -ENOMEM;
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pdev->dev.platform_data = pd;
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pd->netdev = ðernet_dev->dev;
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pd->nr_chips = of_get_child_count(np);
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if (pd->nr_chips > DSA_MAX_SWITCHES)
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pd->nr_chips = DSA_MAX_SWITCHES;
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pd->chip = kcalloc(pd->nr_chips, sizeof(struct dsa_chip_data),
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GFP_KERNEL);
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if (!pd->chip) {
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ret = -ENOMEM;
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goto out_free;
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}
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chip_index = -1;
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for_each_available_child_of_node(np, child) {
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chip_index++;
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cd = &pd->chip[chip_index];
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cd->of_node = child;
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cd->host_dev = &mdio_bus->dev;
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sw_addr = of_get_property(child, "reg", NULL);
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if (!sw_addr)
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continue;
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cd->sw_addr = be32_to_cpup(sw_addr);
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if (cd->sw_addr > PHY_MAX_ADDR)
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continue;
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if (!of_property_read_u32(np, "eeprom-length", &eeprom_len))
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cd->eeprom_len = eeprom_len;
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for_each_available_child_of_node(child, port) {
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port_reg = of_get_property(port, "reg", NULL);
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if (!port_reg)
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continue;
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port_index = be32_to_cpup(port_reg);
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port_name = of_get_property(port, "label", NULL);
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if (!port_name)
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continue;
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cd->port_dn[port_index] = port;
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cd->port_names[port_index] = kstrdup(port_name,
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GFP_KERNEL);
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if (!cd->port_names[port_index]) {
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ret = -ENOMEM;
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goto out_free_chip;
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}
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link = of_parse_phandle(port, "link", 0);
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if (!strcmp(port_name, "dsa") && link &&
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pd->nr_chips > 1) {
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ret = dsa_of_setup_routing_table(pd, cd,
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chip_index, link);
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if (ret)
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goto out_free_chip;
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}
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if (port_index == DSA_MAX_PORTS)
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break;
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}
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}
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return 0;
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out_free_chip:
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dsa_of_free_platform_data(pd);
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out_free:
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kfree(pd);
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pdev->dev.platform_data = NULL;
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return ret;
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}
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static void dsa_of_remove(struct platform_device *pdev)
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{
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struct dsa_platform_data *pd = pdev->dev.platform_data;
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if (!pdev->dev.of_node)
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return;
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dsa_of_free_platform_data(pd);
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kfree(pd);
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}
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#else
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static inline int dsa_of_probe(struct platform_device *pdev)
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{
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return 0;
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}
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static inline void dsa_of_remove(struct platform_device *pdev)
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{
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}
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#endif
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static int dsa_probe(struct platform_device *pdev)
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{
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struct dsa_platform_data *pd = pdev->dev.platform_data;
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struct net_device *dev;
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struct dsa_switch_tree *dst;
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int i, ret;
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pr_notice_once("Distributed Switch Architecture driver version %s\n",
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dsa_driver_version);
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if (pdev->dev.of_node) {
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ret = dsa_of_probe(pdev);
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if (ret)
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return ret;
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pd = pdev->dev.platform_data;
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}
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if (pd == NULL || pd->netdev == NULL)
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return -EINVAL;
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dev = dev_to_net_device(pd->netdev);
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if (dev == NULL) {
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ret = -EINVAL;
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goto out;
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}
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if (dev->dsa_ptr != NULL) {
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dev_put(dev);
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ret = -EEXIST;
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goto out;
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}
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dst = kzalloc(sizeof(*dst), GFP_KERNEL);
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if (dst == NULL) {
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dev_put(dev);
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ret = -ENOMEM;
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goto out;
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}
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platform_set_drvdata(pdev, dst);
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dst->pd = pd;
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dst->master_netdev = dev;
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dst->cpu_switch = -1;
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dst->cpu_port = -1;
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for (i = 0; i < pd->nr_chips; i++) {
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struct dsa_switch *ds;
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ds = dsa_switch_setup(dst, i, &pdev->dev, pd->chip[i].host_dev);
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if (IS_ERR(ds)) {
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netdev_err(dev, "[%d]: couldn't create dsa switch instance (error %ld)\n",
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i, PTR_ERR(ds));
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continue;
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}
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dst->ds[i] = ds;
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if (ds->drv->poll_link != NULL)
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dst->link_poll_needed = 1;
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}
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/*
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* If we use a tagging format that doesn't have an ethertype
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* field, make sure that all packets from this point on get
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* sent to the tag format's receive function.
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*/
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wmb();
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dev->dsa_ptr = (void *)dst;
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if (dst->link_poll_needed) {
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INIT_WORK(&dst->link_poll_work, dsa_link_poll_work);
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init_timer(&dst->link_poll_timer);
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dst->link_poll_timer.data = (unsigned long)dst;
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dst->link_poll_timer.function = dsa_link_poll_timer;
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dst->link_poll_timer.expires = round_jiffies(jiffies + HZ);
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add_timer(&dst->link_poll_timer);
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}
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return 0;
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out:
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dsa_of_remove(pdev);
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return ret;
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}
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static int dsa_remove(struct platform_device *pdev)
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{
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struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
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int i;
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if (dst->link_poll_needed)
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del_timer_sync(&dst->link_poll_timer);
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flush_work(&dst->link_poll_work);
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for (i = 0; i < dst->pd->nr_chips; i++) {
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struct dsa_switch *ds = dst->ds[i];
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|
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if (ds != NULL)
|
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dsa_switch_destroy(ds);
|
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}
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|
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dsa_of_remove(pdev);
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return 0;
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}
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static void dsa_shutdown(struct platform_device *pdev)
|
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{
|
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}
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|
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static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev,
|
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struct packet_type *pt, struct net_device *orig_dev)
|
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{
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struct dsa_switch_tree *dst = dev->dsa_ptr;
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|
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if (unlikely(dst == NULL)) {
|
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kfree_skb(skb);
|
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return 0;
|
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}
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|
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return dst->rcv(skb, dev, pt, orig_dev);
|
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}
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|
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static struct packet_type dsa_pack_type __read_mostly = {
|
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.type = cpu_to_be16(ETH_P_XDSA),
|
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.func = dsa_switch_rcv,
|
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};
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|
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#ifdef CONFIG_PM_SLEEP
|
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static int dsa_suspend(struct device *d)
|
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{
|
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struct platform_device *pdev = to_platform_device(d);
|
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struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
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int i, ret = 0;
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|
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for (i = 0; i < dst->pd->nr_chips; i++) {
|
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struct dsa_switch *ds = dst->ds[i];
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|
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if (ds != NULL)
|
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ret = dsa_switch_suspend(ds);
|
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}
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|
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return ret;
|
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}
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|
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static int dsa_resume(struct device *d)
|
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{
|
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struct platform_device *pdev = to_platform_device(d);
|
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struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
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int i, ret = 0;
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|
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for (i = 0; i < dst->pd->nr_chips; i++) {
|
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struct dsa_switch *ds = dst->ds[i];
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|
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if (ds != NULL)
|
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ret = dsa_switch_resume(ds);
|
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}
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return ret;
|
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}
|
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#endif
|
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|
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static SIMPLE_DEV_PM_OPS(dsa_pm_ops, dsa_suspend, dsa_resume);
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|
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static const struct of_device_id dsa_of_match_table[] = {
|
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{ .compatible = "brcm,bcm7445-switch-v4.0" },
|
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{ .compatible = "marvell,dsa", },
|
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{}
|
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};
|
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MODULE_DEVICE_TABLE(of, dsa_of_match_table);
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|
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static struct platform_driver dsa_driver = {
|
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.probe = dsa_probe,
|
|
.remove = dsa_remove,
|
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.shutdown = dsa_shutdown,
|
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.driver = {
|
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.name = "dsa",
|
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.of_match_table = dsa_of_match_table,
|
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.pm = &dsa_pm_ops,
|
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},
|
|
};
|
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|
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static int __init dsa_init_module(void)
|
|
{
|
|
int rc;
|
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|
|
rc = platform_driver_register(&dsa_driver);
|
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if (rc)
|
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return rc;
|
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|
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dev_add_pack(&dsa_pack_type);
|
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|
|
return 0;
|
|
}
|
|
module_init(dsa_init_module);
|
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|
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static void __exit dsa_cleanup_module(void)
|
|
{
|
|
dev_remove_pack(&dsa_pack_type);
|
|
platform_driver_unregister(&dsa_driver);
|
|
}
|
|
module_exit(dsa_cleanup_module);
|
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|
|
MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>");
|
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MODULE_DESCRIPTION("Driver for Distributed Switch Architecture switch chips");
|
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MODULE_LICENSE("GPL");
|
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MODULE_ALIAS("platform:dsa");
|