cregit-Linux how code gets into the kernel

Release 4.11 drivers/remoteproc/remoteproc_sysfs.c

/*
 * Remote Processor Framework
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/remoteproc.h>

#include "remoteproc_internal.h"


#define to_rproc(d) container_of(d, struct rproc, dev)

/* Expose the loaded / running firmware name via sysfs */

static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, char *buf) { struct rproc *rproc = to_rproc(dev); return sprintf(buf, "%s\n", rproc->firmware); }

Contributors

PersonTokensPropCommitsCommitProp
Matt Redfearn42100.00%1100.00%
Total42100.00%1100.00%

/* Change firmware name via sysfs */
static ssize_t firmware_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct rproc *rproc = to_rproc(dev); char *p; int err, len = count; err = mutex_lock_interruptible(&rproc->lock); if (err) { dev_err(dev, "can't lock rproc %s: %d\n", rproc->name, err); return -EINVAL; } if (rproc->state != RPROC_OFFLINE) { dev_err(dev, "can't change firmware while running\n"); err = -EBUSY; goto out; } len = strcspn(buf, "\n"); p = kstrndup(buf, len, GFP_KERNEL); if (!p) { err = -ENOMEM; goto out; } kfree(rproc->firmware); rproc->firmware = p; out: mutex_unlock(&rproc->lock); return err ? err : count; }

Contributors

PersonTokensPropCommitsCommitProp
Matt Redfearn168100.00%1100.00%
Total168100.00%1100.00%

static DEVICE_ATTR_RW(firmware); /* * A state-to-string lookup table, for exposing a human readable state * via sysfs. Always keep in sync with enum rproc_state */ static const char * const rproc_state_string[] = { [RPROC_OFFLINE] = "offline", [RPROC_SUSPENDED] = "suspended", [RPROC_RUNNING] = "running", [RPROC_CRASHED] = "crashed", [RPROC_DELETED] = "deleted", [RPROC_LAST] = "invalid", }; /* Expose the state of the remote processor via sysfs */
static ssize_t state_show(struct device *dev, struct device_attribute *attr, char *buf) { struct rproc *rproc = to_rproc(dev); unsigned int state; state = rproc->state > RPROC_LAST ? RPROC_LAST : rproc->state; return sprintf(buf, "%s\n", rproc_state_string[state]); }

Contributors

PersonTokensPropCommitsCommitProp
Matt Redfearn61100.00%1100.00%
Total61100.00%1100.00%

/* Change remote processor state via sysfs */
static ssize_t state_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct rproc *rproc = to_rproc(dev); int ret = 0; if (sysfs_streq(buf, "start")) { if (rproc->state == RPROC_RUNNING) return -EBUSY; ret = rproc_boot(rproc); if (ret) dev_err(&rproc->dev, "Boot failed: %d\n", ret); } else if (sysfs_streq(buf, "stop")) { if (rproc->state != RPROC_RUNNING) return -EINVAL; rproc_shutdown(rproc); } else { dev_err(&rproc->dev, "Unrecognised option: %s\n", buf); ret = -EINVAL; } return ret ? ret : count; }

Contributors

PersonTokensPropCommitsCommitProp
Matt Redfearn141100.00%1100.00%
Total141100.00%1100.00%

static DEVICE_ATTR_RW(state); static struct attribute *rproc_attrs[] = { &dev_attr_firmware.attr, &dev_attr_state.attr, NULL }; static const struct attribute_group rproc_devgroup = { .attrs = rproc_attrs }; static const struct attribute_group *rproc_devgroups[] = { &rproc_devgroup, NULL }; struct class rproc_class = { .name = "remoteproc", .dev_groups = rproc_devgroups, };
int __init rproc_init_sysfs(void) { /* create remoteproc device class for sysfs */ int err = class_register(&rproc_class); if (err) pr_err("remoteproc: unable to register class\n"); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Matt Redfearn30100.00%1100.00%
Total30100.00%1100.00%


void __exit rproc_exit_sysfs(void) { class_unregister(&rproc_class); }

Contributors

PersonTokensPropCommitsCommitProp
Matt Redfearn14100.00%1100.00%
Total14100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Matt Redfearn59299.00%150.00%
Sarangdhar Joshi61.00%150.00%
Total598100.00%2100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.