From: Dominik Brodowski <linux@brodo.de>
To: rmk@arm.linux.org.uk
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 2.5] pcmcia: generic suspend/resume capability
Date: Fri, 28 Mar 2003 15:53:28 +0100 [thread overview]
Message-ID: <20030328145328.GA3330@brodo.de> (raw)
The socket drivers already offer suspend and resume
capability. Integrate this with the driver model, based on a
suggestion by Russell King.
Also, remove two never-used functions from the socket drivers (to_ns).
drivers/pcmcia/cs.c | 70 ++++++++++++++++++++--------------------
drivers/pcmcia/cs_internal.h | 1
drivers/pcmcia/hd64465_ss.c | 2 +
drivers/pcmcia/i82092.c | 17 ++++++---
drivers/pcmcia/i82365.c | 2 +
drivers/pcmcia/pci_socket.c | 15 +-------
drivers/pcmcia/sa1100_generic.c | 2 +
drivers/pcmcia/sa1111_generic.c | 14 +-------
drivers/pcmcia/tcic.c | 7 +---
include/pcmcia/ss.h | 5 ++
10 files changed, 64 insertions(+), 71 deletions(-)
diff -ruN linux-original/drivers/pcmcia/cs.c linux/drivers/pcmcia/cs.c
--- linux-original/drivers/pcmcia/cs.c 2003-03-27 18:21:51.000000000 +0100
+++ linux/drivers/pcmcia/cs.c 2003-03-28 15:42:20.000000000 +0100
@@ -111,13 +111,6 @@
/* Access speed for IO windows */
INT_MODULE_PARM(io_speed, 0); /* ns */
-/* Optional features */
-#ifdef CONFIG_PM
-INT_MODULE_PARM(do_apm, 1);
-#else
-INT_MODULE_PARM(do_apm, 0);
-#endif
-
#ifdef PCMCIA_DEBUG
INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
static const char *version =
@@ -348,7 +341,6 @@
/* base address = 0, map = 0 */
s->cis_mem.flags = 0;
s->cis_mem.speed = cis_speed;
- s->use_bus_pm = cls_d->use_bus_pm;
s->erase_busy.next = s->erase_busy.prev = &s->erase_busy;
spin_lock_init(&s->lock);
@@ -756,33 +748,47 @@
parse_events(s, SS_DETECT);
}
-static int handle_pm_event(struct pm_dev *dev, pm_request_t rqst, void *data)
+
+int pcmcia_socket_dev_suspend(struct device * dev, u32 state, u32 level)
{
- int i;
- socket_info_t *s;
+ struct pcmcia_socket_class_data *cls_d = to_class_data(dev);
+ socket_info_t *s;
+ int i;
- /* only for busses that don't suspend/resume slots directly */
+ if ((!cls_d) || (level != SUSPEND_SAVE_STATE))
+ return 0;
- switch (rqst) {
- case PM_SUSPEND:
- DEBUG(1, "cs: received suspend notification\n");
- for (i = 0; i < sockets; i++) {
- s = socket_table [i];
- if (!s->use_bus_pm)
- pcmcia_suspend_socket (socket_table [i]);
+ s = (socket_info_t *) cls_d->s_info;
+
+ for (i = 0; i < cls_d->nsock; i++) {
+ pcmcia_suspend_socket(s);
+ s++;
}
- break;
- case PM_RESUME:
- DEBUG(1, "cs: received resume notification\n");
- for (i = 0; i < sockets; i++) {
- s = socket_table [i];
- if (!s->use_bus_pm)
- pcmcia_resume_socket (socket_table [i]);
+
+ return 0;
+}
+EXPORT_SYMBOL(pcmcia_socket_dev_suspend);
+
+int pcmcia_socket_dev_resume(struct device * dev, u32 level)
+{
+ struct pcmcia_socket_class_data *cls_d = to_class_data(dev);
+ socket_info_t *s;
+ int i;
+
+ if ((!cls_d) || (level != RESUME_RESTORE_STATE))
+ return 0;
+
+ s = (socket_info_t *) cls_d->s_info;
+
+ for (i = 0; i < cls_d->nsock; i++) {
+ pcmcia_resume_socket(s);
+ s++;
}
- break;
- }
- return 0;
-} /* handle_pm_event */
+
+ return 0;
+}
+EXPORT_SYMBOL(pcmcia_socket_dev_resume);
+
/*======================================================================
@@ -2429,8 +2435,6 @@
printk(KERN_INFO " %s\n", options);
DEBUG(0, "%s\n", version);
devclass_register(&pcmcia_socket_class);
- if (do_apm)
- pm_register(PM_SYS_DEV, PM_SYS_PCMCIA, handle_pm_event);
#ifdef CONFIG_PROC_FS
proc_pccard = proc_mkdir("pccard", proc_bus);
#endif
@@ -2446,8 +2450,6 @@
remove_proc_entry("pccard", proc_bus);
}
#endif
- if (do_apm)
- pm_unregister_all(handle_pm_event);
release_resource_db();
devclass_unregister(&pcmcia_socket_class);
}
diff -ruN linux-original/drivers/pcmcia/cs_internal.h linux/drivers/pcmcia/cs_internal.h
--- linux-original/drivers/pcmcia/cs_internal.h 2003-03-27 18:21:51.000000000 +0100
+++ linux/drivers/pcmcia/cs_internal.h 2003-03-28 15:41:32.000000000 +0100
@@ -157,7 +157,6 @@
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc;
#endif
- int use_bus_pm;
} socket_info_t;
/* Flags in config state */
diff -ruN linux-original/drivers/pcmcia/hd64465_ss.c linux/drivers/pcmcia/hd64465_ss.c
--- linux-original/drivers/pcmcia/hd64465_ss.c 2003-03-27 18:21:51.000000000 +0100
+++ linux/drivers/pcmcia/hd64465_ss.c 2003-03-28 15:38:29.000000000 +0100
@@ -968,6 +968,8 @@
.name = "hd64465-pcmcia",
.bus = &platform_bus_type,
.devclass = &pcmcia_socket_class,
+ .suspend = pcmcia_socket_dev_suspend,
+ .resume = pcmcia_socket_dev_resume,
};
static struct platform_device hd64465_device = {
diff -ruN linux-original/drivers/pcmcia/i82092.c linux/drivers/pcmcia/i82092.c
--- linux-original/drivers/pcmcia/i82092.c 2003-03-27 18:21:51.000000000 +0100
+++ linux/drivers/pcmcia/i82092.c 2003-03-28 15:44:18.000000000 +0100
@@ -42,11 +42,23 @@
};
MODULE_DEVICE_TABLE(pci, i82092aa_pci_ids);
+static int i82092aa_socket_suspend (struct pci_dev *dev, u32 state)
+{
+ return pcmcia_socket_dev_suspend(&dev->dev, state, 0);
+}
+
+static int i82092aa_socket_resume (struct pci_dev *dev)
+{
+ return pcmcia_socket_dev_resume(&dev->dev, RESUME_RESTORE_STATE);
+}
+
static struct pci_driver i82092aa_pci_drv = {
.name = "i82092aa",
.id_table = i82092aa_pci_ids,
.probe = i82092aa_pci_probe,
.remove = __devexit_p(i82092aa_pci_remove),
+ .suspend = i82092aa_socket_suspend,
+ .resume = i82092aa_socket_resume,
.driver = {
.devclass = &pcmcia_socket_class,
},
@@ -302,11 +314,6 @@
return 0;
}
-static int to_ns(int cycles)
-{
- return cycle_time*cycles;
-}
-
/* Interrupt handler functionality */
diff -ruN linux-original/drivers/pcmcia/i82365.c linux/drivers/pcmcia/i82365.c
--- linux-original/drivers/pcmcia/i82365.c 2003-03-27 18:21:51.000000000 +0100
+++ linux/drivers/pcmcia/i82365.c 2003-03-28 15:39:48.000000000 +0100
@@ -1511,6 +1511,8 @@
.name = "i82365",
.bus = &platform_bus_type,
.devclass = &pcmcia_socket_class,
+ .suspend = pcmcia_socket_dev_suspend,
+ .resume = pcmcia_socket_dev_resume,
};
static struct platform_device i82365_device = {
diff -ruN linux-original/drivers/pcmcia/pci_socket.c linux/drivers/pcmcia/pci_socket.c
--- linux-original/drivers/pcmcia/pci_socket.c 2003-03-27 18:21:51.000000000 +0100
+++ linux/drivers/pcmcia/pci_socket.c 2003-03-28 15:42:43.000000000 +0100
@@ -31,10 +31,6 @@
#include "pci_socket.h"
-extern void pcmcia_suspend_socket (struct socket_info_t *socket);
-extern void pcmcia_resume_socket (struct socket_info_t *socket);
-
-
/*
* Arbitrary define. This is the array of active cardbus
* entries.
@@ -157,7 +153,6 @@
socket->cls_d.nsock = 1; /* yenta is 1, no other low-level driver uses
this yet */
socket->cls_d.ops = &pci_socket_operations;
- socket->cls_d.use_bus_pm = 1;
dev->dev.class_data = &socket->cls_d;
/* prepare pci_socket_t */
@@ -204,18 +199,12 @@
static int cardbus_suspend (struct pci_dev *dev, u32 state)
{
- pci_socket_t *socket = pci_get_drvdata(dev);
- if (socket && socket->cls_d.s_info)
- pcmcia_suspend_socket (socket->cls_d.s_info);
- return 0;
+ return pcmcia_socket_dev_suspend(&dev->dev, state, 0);
}
static int cardbus_resume (struct pci_dev *dev)
{
- pci_socket_t *socket = pci_get_drvdata(dev);
- if (socket && socket->cls_d.s_info)
- pcmcia_resume_socket (socket->cls_d.s_info);
- return 0;
+ return pcmcia_socket_dev_resume(&dev->dev, RESUME_RESTORE_STATE);
}
diff -ruN linux-original/drivers/pcmcia/sa1100_generic.c linux/drivers/pcmcia/sa1100_generic.c
--- linux-original/drivers/pcmcia/sa1100_generic.c 2003-03-27 18:21:51.000000000 +0100
+++ linux/drivers/pcmcia/sa1100_generic.c 2003-03-28 15:38:09.000000000 +0100
@@ -1020,6 +1020,8 @@
.name = "sa11x0-pcmcia",
.bus = &platform_bus_type,
.devclass = &pcmcia_socket_class,
+ .suspend = pcmcia_socket_dev_suspend,
+ .resume = pcmcia_socket_dev_resume,
};
static struct platform_device sa1100_pcmcia_device = {
diff -ruN linux-original/drivers/pcmcia/sa1111_generic.c linux/drivers/pcmcia/sa1111_generic.c
--- linux-original/drivers/pcmcia/sa1111_generic.c 2003-03-27 18:21:51.000000000 +0100
+++ linux/drivers/pcmcia/sa1111_generic.c 2003-03-28 15:37:39.000000000 +0100
@@ -257,16 +257,6 @@
return 0;
}
-static int pcmcia_suspend(struct device *dev, u32 state, u32 level)
-{
- return 0;
-}
-
-static int pcmcia_resume(struct device *dev, u32 level)
-{
- return 0;
-}
-
static struct sa1111_driver pcmcia_driver = {
.drv = {
.name = "sa1111-pcmcia",
@@ -274,8 +264,8 @@
.devclass = &pcmcia_socket_class,
.probe = pcmcia_probe,
.remove = __devexit_p(pcmcia_remove),
- .suspend = pcmcia_suspend,
- .resume = pcmcia_resume,
+ .suspend = pcmcia_socket_dev_suspend,
+ .resume = pcmcia_socket_dev_resume,
},
.devid = SA1111_DEVID_PCMCIA,
};
diff -ruN linux-original/drivers/pcmcia/tcic.c linux/drivers/pcmcia/tcic.c
--- linux-original/drivers/pcmcia/tcic.c 2003-03-27 18:21:51.000000000 +0100
+++ linux/drivers/pcmcia/tcic.c 2003-03-28 15:44:29.000000000 +0100
@@ -225,11 +225,6 @@
return 2*(ns-14)/cycle_time;
}
-static int to_ns(int cycles)
-{
- return (cycles*cycle_time)/2 + 14;
-}
-
/*====================================================================*/
static volatile u_int irq_hits;
@@ -384,6 +379,8 @@
.name = "tcic-pcmcia",
.bus = &platform_bus_type,
.devclass = &pcmcia_socket_class,
+ .suspend = pcmcia_socket_dev_suspend,
+ .resume = pcmcia_socket_dev_resume,
};
static struct platform_device tcic_device = {
diff -ruN linux-original/include/pcmcia/ss.h linux/include/pcmcia/ss.h
--- linux-original/include/pcmcia/ss.h 2003-03-27 18:21:54.000000000 +0100
+++ linux/include/pcmcia/ss.h 2003-03-28 15:29:03.000000000 +0100
@@ -148,9 +148,12 @@
* returned to driver) = sock_offset + (0, 1, .. , (nsock-1) */
struct pccard_operations *ops; /* see above */
void *s_info; /* socket_info_t */
- unsigned int use_bus_pm;
};
extern struct device_class pcmcia_socket_class;
+/* socket drivers are expected to use these callbacks in their .drv struct */
+int pcmcia_socket_dev_suspend(struct device * dev, u32 state, u32 level);
+int pcmcia_socket_dev_resume(struct device * dev, u32 level);
+
#endif /* _LINUX_SS_H */
reply other threads:[~2003-03-28 14:42 UTC|newest]
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