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authorDominik Brodowski <linux@dominikbrodowski.net>2006-01-10 19:19:37 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2006-01-12 18:48:16 +0100
commitdb1019ca0548b263989bc98900eaf15107e533ad (patch)
tree19c399ec6345d8e91103b3b3625238f914246364 /drivers/pcmcia/socket_sysfs.c
parentf542ff6dd1a444c85cc245ac40aef5f703e48674 (diff)
[PATCH] pcmcia: runtime powermanagement interface
With the "power/state" sysfs interface being deprecated, make another one available which is compatible to what was discussed on the linux PM mailinglist. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/pcmcia/socket_sysfs.c')
-rw-r--r--drivers/pcmcia/socket_sysfs.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/pcmcia/socket_sysfs.c b/drivers/pcmcia/socket_sysfs.c
index 7a7744662d54..5ab1cdef7c48 100644
--- a/drivers/pcmcia/socket_sysfs.c
+++ b/drivers/pcmcia/socket_sysfs.c
@@ -98,6 +98,30 @@ static ssize_t pccard_store_insert(struct class_device *dev, const char *buf, si
}
static CLASS_DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);
+
+static ssize_t pccard_show_card_pm_state(struct class_device *dev, char *buf)
+{
+ struct pcmcia_socket *s = to_socket(dev);
+ return sprintf(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on");
+}
+
+static ssize_t pccard_store_card_pm_state(struct class_device *dev, const char *buf, size_t count)
+{
+ ssize_t ret = -EINVAL;
+ struct pcmcia_socket *s = to_socket(dev);
+
+ if (!count)
+ return -EINVAL;
+
+ if (!(s->state & SOCKET_SUSPEND) && !strncmp(buf, "off", 3))
+ ret = pcmcia_suspend_card(s);
+ else if ((s->state & SOCKET_SUSPEND) && !strncmp(buf, "on", 2))
+ ret = pcmcia_resume_card(s);
+
+ return ret ? -ENODEV : count;
+}
+static CLASS_DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state);
+
static ssize_t pccard_store_eject(struct class_device *dev, const char *buf, size_t count)
{
ssize_t ret;
@@ -320,6 +344,7 @@ static struct class_device_attribute *pccard_socket_attributes[] = {
&class_device_attr_card_vpp,
&class_device_attr_card_vcc,
&class_device_attr_card_insert,
+ &class_device_attr_card_pm_state,
&class_device_attr_card_eject,
&class_device_attr_card_irq_mask,
&class_device_attr_available_resources_setup_done,