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// 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/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", s->state & SOCKET_SUSPEND ? "off" : "on");
}
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", s->resource_setup_done ? "yes" : "no");
}
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);
}
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