diff options
Diffstat (limited to 'drivers/pcmcia/socket_sysfs.c')
| -rw-r--r-- | drivers/pcmcia/socket_sysfs.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/drivers/pcmcia/socket_sysfs.c b/drivers/pcmcia/socket_sysfs.c new file mode 100644 index 0000000000..c7a906664c --- /dev/null +++ b/drivers/pcmcia/socket_sysfs.c @@ -0,0 +1,228 @@ +// 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); +} |