// SPDX-License-Identifier: GPL-2.0-only/* * socket_sysfs.c -- most of socket-related sysfs output * * (C) 2003 - 2004		Dominik Brodowski */ #include <linux/module.h>#include <linux/moduleparam.h>#include <linux/init.h>#include <linux/kernel.h>#include <linux/string.h>#include <linux/string_choices.h>#include <linux/major.h>#include <linux/errno.h>#include <linux/mm.h>#include <linux/interrupt.h>#include <linux/timer.h>#include <linux/ioport.h>#include <linux/delay.h>#include <linux/pm.h>#include <linux/device.h>#include <linux/mutex.h>#include <asm/irq.h> #include <pcmcia/ss.h>#include <pcmcia/cistpl.h>#include <pcmcia/cisreg.h>#include <pcmcia/ds.h>#include "cs_internal.h" #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev) static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr,				char *buf){	struct pcmcia_socket *s = to_socket(dev); 	if (!(s->state & SOCKET_PRESENT))		return -ENODEV;	if (s->state & SOCKET_CARDBUS)		return sysfs_emit(buf, "32-bit\n");	return sysfs_emit(buf, "16-bit\n");}static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL); static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr,				   char *buf){	struct pcmcia_socket *s = to_socket(dev); 	if (!(s->state & SOCKET_PRESENT))		return -ENODEV;	if (s->socket.Vcc)		return sysfs_emit(buf, "%d.%dV\n", s->socket.Vcc / 10,			       s->socket.Vcc % 10);	return sysfs_emit(buf, "X.XV\n");}static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL); static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr,			       char *buf){	struct pcmcia_socket *s = to_socket(dev);	if (!(s->state & SOCKET_PRESENT))		return -ENODEV;	return sysfs_emit(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);}static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL); static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr,			       char *buf){	struct pcmcia_socket *s = to_socket(dev);	if (!(s->state & SOCKET_PRESENT))		return -ENODEV;	return sysfs_emit(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);}static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL);  static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr,				   const char *buf, size_t count){	struct pcmcia_socket *s = to_socket(dev); 	if (!count)		return -EINVAL; 	pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT); 	return count;}static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);  static ssize_t pccard_show_card_pm_state(struct device *dev,					 struct device_attribute *attr,					 char *buf){	struct pcmcia_socket *s = to_socket(dev);	return sysfs_emit(buf, "%s\n", str_off_on(s->state & SOCKET_SUSPEND));} static ssize_t pccard_store_card_pm_state(struct device *dev,					  struct device_attribute *attr,					  const char *buf, size_t count){	struct pcmcia_socket *s = to_socket(dev);	ssize_t ret = count; 	if (!count)		return -EINVAL; 	if (!strncmp(buf, "off", 3))		pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND);	else {		if (!strncmp(buf, "on", 2))			pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME);		else			ret = -EINVAL;	} 	return ret;}static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state); static ssize_t pccard_store_eject(struct device *dev,				  struct device_attribute *attr,				  const char *buf, size_t count){	struct pcmcia_socket *s = to_socket(dev); 	if (!count)		return -EINVAL; 	pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT); 	return count;}static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);  static ssize_t pccard_show_irq_mask(struct device *dev,				    struct device_attribute *attr,				    char *buf){	struct pcmcia_socket *s = to_socket(dev);	return sysfs_emit(buf, "0x%04x\n", s->irq_mask);} static ssize_t pccard_store_irq_mask(struct device *dev,				     struct device_attribute *attr,				     const char *buf, size_t count){	ssize_t ret;	struct pcmcia_socket *s = to_socket(dev);	u32 mask; 	if (!count)		return -EINVAL; 	ret = sscanf(buf, "0x%x\n", &mask); 	if (ret == 1) {		mutex_lock(&s->ops_mutex);		s->irq_mask &= mask;		mutex_unlock(&s->ops_mutex);		ret = 0;	} 	return ret ? ret : count;}static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask);  static ssize_t pccard_show_resource(struct device *dev,				    struct device_attribute *attr, char *buf){	struct pcmcia_socket *s = to_socket(dev);	return sysfs_emit(buf, "%s\n", str_yes_no(s->resource_setup_done));} static ssize_t pccard_store_resource(struct device *dev,				     struct device_attribute *attr,				     const char *buf, size_t count){	struct pcmcia_socket *s = to_socket(dev); 	if (!count)		return -EINVAL; 	mutex_lock(&s->ops_mutex);	if (!s->resource_setup_done)		s->resource_setup_done = 1;	mutex_unlock(&s->ops_mutex); 	pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); 	return count;}static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource); static struct attribute *pccard_socket_attributes[] = {	&dev_attr_card_type.attr,	&dev_attr_card_voltage.attr,	&dev_attr_card_vpp.attr,	&dev_attr_card_vcc.attr,	&dev_attr_card_insert.attr,	&dev_attr_card_pm_state.attr,	&dev_attr_card_eject.attr,	&dev_attr_card_irq_mask.attr,	&dev_attr_available_resources_setup_done.attr,	NULL,}; static const struct attribute_group socket_attrs = {	.attrs = pccard_socket_attributes,}; int pccard_sysfs_add_socket(struct device *dev){	return sysfs_create_group(&dev->kobj, &socket_attrs);} void pccard_sysfs_remove_socket(struct device *dev){	sysfs_remove_group(&dev->kobj, &socket_attrs);}