diff options
| -rw-r--r-- | drivers/base/power/runtime.c | 1 | ||||
| -rw-r--r-- | drivers/pcmcia/cs.c | 14 | ||||
| -rw-r--r-- | drivers/pcmcia/cs_internal.h | 2 | ||||
| -rw-r--r-- | drivers/pcmcia/ds.c | 94 |
4 files changed, 100 insertions, 11 deletions
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 4bafef83e79..96370ec1d67 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -62,6 +62,7 @@ int dpm_runtime_suspend(struct device * dev, pm_message_t state) up(&dpm_sem); return error; } +EXPORT_SYMBOL(dpm_runtime_suspend); #if 0 diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index 7cf09084ef6..83d2753814c 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -780,8 +780,13 @@ int pccard_reset_card(struct pcmcia_socket *skt) ret = send_event(skt, CS_EVENT_RESET_REQUEST, CS_EVENT_PRI_LOW); if (ret == 0) { send_event(skt, CS_EVENT_RESET_PHYSICAL, CS_EVENT_PRI_LOW); - if (socket_reset(skt) == CS_SUCCESS) + if (skt->callback) + skt->callback->suspend(skt); + if (socket_reset(skt) == CS_SUCCESS) { send_event(skt, CS_EVENT_CARD_RESET, CS_EVENT_PRI_LOW); + if (skt->callback) + skt->callback->resume(skt); + } } ret = CS_SUCCESS; @@ -812,6 +817,11 @@ int pcmcia_suspend_card(struct pcmcia_socket *skt) ret = CS_UNSUPPORTED_FUNCTION; break; } + if (skt->callback) { + ret = skt->callback->suspend(skt); + if (ret) + break; + } ret = socket_suspend(skt); } while (0); up(&skt->skt_sem); @@ -838,6 +848,8 @@ int pcmcia_resume_card(struct pcmcia_socket *skt) break; } ret = socket_resume(skt); + if (!ret && skt->callback) + skt->callback->resume(skt); } while (0); up(&skt->skt_sem); diff --git a/drivers/pcmcia/cs_internal.h b/drivers/pcmcia/cs_internal.h index 634426b78f2..7b37eba35bf 100644 --- a/drivers/pcmcia/cs_internal.h +++ b/drivers/pcmcia/cs_internal.h @@ -143,6 +143,8 @@ struct pcmcia_callback{ struct module *owner; int (*event) (struct pcmcia_socket *s, event_t event, int priority); void (*requery) (struct pcmcia_socket *s); + int (*suspend) (struct pcmcia_socket *s); + int (*resume) (struct pcmcia_socket *s); }; int pccard_register_pcmcia(struct pcmcia_socket *s, struct pcmcia_callback *c); diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index a802c65c353..5223395b246 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -920,6 +920,78 @@ static struct device_attribute pcmcia_dev_attrs[] = { __ATTR_NULL, }; +/* PM support, also needed for reset */ + +static int pcmcia_dev_suspend(struct device * dev, pm_message_t state) +{ + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); + struct pcmcia_driver *p_drv = NULL; + + if (dev->driver) + p_drv = to_pcmcia_drv(dev->driver); + + if (p_drv && p_drv->suspend) + return p_drv->suspend(p_dev); + + return 0; +} + + +static int pcmcia_dev_resume(struct device * dev) +{ + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); + struct pcmcia_driver *p_drv = NULL; + + if (dev->driver) + p_drv = to_pcmcia_drv(dev->driver); + + if (p_drv && p_drv->resume) + return p_drv->resume(p_dev); + + return 0; +} + + +static int pcmcia_bus_suspend_callback(struct device *dev, void * _data) +{ + struct pcmcia_socket *skt = _data; + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); + + if (p_dev->socket != skt) + return 0; + + return dpm_runtime_suspend(dev, PMSG_SUSPEND); +} + +static int pcmcia_bus_resume_callback(struct device *dev, void * _data) +{ + struct pcmcia_socket *skt = _data; + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); + + if (p_dev->socket != skt) + return 0; + + dpm_runtime_resume(dev); + + return 0; +} + +static int pcmcia_bus_resume(struct pcmcia_socket *skt) +{ + bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback); + return 0; +} + +static int pcmcia_bus_suspend(struct pcmcia_socket *skt) +{ + if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt, + pcmcia_bus_suspend_callback)) { + pcmcia_bus_resume(skt); + return -EIO; + } + return 0; +} + /*====================================================================== @@ -951,16 +1023,6 @@ static int send_event_callback(struct device *dev, void * _data) if (p_dev->state & (CLIENT_UNBOUND|CLIENT_STALE)) return 0; - if ((data->event == CS_EVENT_PM_SUSPEND) || - (data->event == CS_EVENT_RESET_PHYSICAL)) { - if (p_drv->suspend) - return p_drv->suspend(p_dev); - } else if ((data->event == CS_EVENT_PM_RESUME) || - (data->event == CS_EVENT_CARD_RESET)) { - if (p_drv->resume) - return p_drv->resume(p_dev); - } - if (p_drv->event) return p_drv->event(data->event, data->priority, &p_dev->event_callback_args); @@ -1012,6 +1074,13 @@ static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) ret = send_event(skt, event, priority); break; + case CS_EVENT_PM_SUSPEND: + case CS_EVENT_PM_RESUME: + case CS_EVENT_RESET_PHYSICAL: + case CS_EVENT_CARD_RESET: + handle_event(skt, event); + break; + default: handle_event(skt, event); send_event(skt, event, priority); @@ -1166,10 +1235,13 @@ int pcmcia_deregister_client(struct pcmcia_device *p_dev) } /* deregister_client */ EXPORT_SYMBOL(pcmcia_deregister_client); + static struct pcmcia_callback pcmcia_bus_callback = { .owner = THIS_MODULE, .event = ds_event, .requery = pcmcia_bus_rescan, + .suspend = pcmcia_bus_suspend, + .resume = pcmcia_bus_resume, }; static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev, @@ -1238,6 +1310,8 @@ struct bus_type pcmcia_bus_type = { .uevent = pcmcia_bus_uevent, .match = pcmcia_bus_match, .dev_attrs = pcmcia_dev_attrs, + .suspend = pcmcia_dev_suspend, + .resume = pcmcia_dev_resume, }; 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