From 98e4c28b7ec390c2dad6a4c69d69629c0f7e8b10 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Mon, 14 Nov 2005 21:21:18 +0100 Subject: [PATCH] pcmcia: new suspend core Move the suspend and resume methods out of the event handler, and into special functions. Also use these functions for pre- and post-reset, as almost all drivers already do, and the remaining ones can easily be converted. Bugfix to include/pcmcia/ds.c Signed-off-by: Andrew Morton Signed-off-by: Dominik Brodowski --- drivers/mtd/maps/pcmciamtd.c | 36 ++++++++++++++++++++---------------- 1 file changed, 20 insertions(+), 16 deletions(-) (limited to 'drivers/mtd/maps') diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index af24216..86443cf 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -691,6 +691,24 @@ static void pcmciamtd_config(dev_link_t *link) } +static int pcmciamtd_suspend(struct pcmcia_device *dev) +{ + DEBUG(2, "EVENT_PM_RESUME"); + + /* get_lock(link); */ + + return 0; +} + +static int pcmciamtd_resume(struct pcmcia_device *dev) +{ + DEBUG(2, "EVENT_PM_SUSPEND"); + + /* free_lock(link); */ + + return 0; +} + /* The card status event handler. Mostly, this schedules other * stuff to run after an event is received. A CARD_REMOVAL event * also sets some flags to discourage the driver from trying @@ -721,22 +739,6 @@ static int pcmciamtd_event(event_t event, int priority, link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; pcmciamtd_config(link); break; - case CS_EVENT_PM_SUSPEND: - DEBUG(2, "EVENT_PM_SUSPEND"); - link->state |= DEV_SUSPEND; - /* Fall through... */ - case CS_EVENT_RESET_PHYSICAL: - DEBUG(2, "EVENT_RESET_PHYSICAL"); - /* get_lock(link); */ - break; - case CS_EVENT_PM_RESUME: - DEBUG(2, "EVENT_PM_RESUME"); - link->state &= ~DEV_SUSPEND; - /* Fall through... */ - case CS_EVENT_CARD_RESET: - DEBUG(2, "EVENT_CARD_RESET"); - /* free_lock(link); */ - break; default: DEBUG(2, "Unknown event %d", event); } @@ -848,6 +850,8 @@ static struct pcmcia_driver pcmciamtd_driver = { .detach = pcmciamtd_detach, .owner = THIS_MODULE, .id_table = pcmciamtd_ids, + .suspend = pcmciamtd_suspend, + .resume = pcmciamtd_resume, }; -- cgit v1.1 From cc3b4866bee996c922e875b8c8efe9f0d8803aae Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Mon, 14 Nov 2005 21:23:14 +0100 Subject: [PATCH] pcmcia: unify detach, REMOVAL_EVENT handlers into one remove callback Unify the "detach" and REMOVAL_EVENT handlers to one "remove" function. Old functionality is preserved, for the moment. Signed-off-by: Dominik Brodowski --- drivers/mtd/maps/pcmciamtd.c | 36 +++++++++++------------------------- 1 file changed, 11 insertions(+), 25 deletions(-) (limited to 'drivers/mtd/maps') diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index 86443cf..3ddcb1b 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -722,18 +722,6 @@ static int pcmciamtd_event(event_t event, int priority, DEBUG(1, "event=0x%06x", event); switch (event) { - case CS_EVENT_CARD_REMOVAL: - DEBUG(2, "EVENT_CARD_REMOVAL"); - link->state &= ~DEV_PRESENT; - if (link->state & DEV_CONFIG) { - struct pcmciamtd_dev *dev = link->priv; - if(dev->mtd_info) { - del_mtd_device(dev->mtd_info); - info("mtd%d: Removed", dev->mtd_info->index); - } - pcmciamtd_release(link); - } - break; case CS_EVENT_CARD_INSERTION: DEBUG(2, "EVENT_CARD_INSERTION"); link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; @@ -752,23 +740,21 @@ static int pcmciamtd_event(event_t event, int priority, * when the device is released. */ -static void pcmciamtd_detach(dev_link_t *link) +static void pcmciamtd_detach(struct pcmcia_device *p_dev) { + dev_link_t *link = dev_to_instance(p_dev); + DEBUG(3, "link=0x%p", link); if(link->state & DEV_CONFIG) { - pcmciamtd_release(link); - } + struct pcmciamtd_dev *dev = link->priv; + if(dev->mtd_info) { + del_mtd_device(dev->mtd_info); + info("mtd%d: Removed", dev->mtd_info->index); + } - if (link->handle) { - int ret; - DEBUG(2, "Deregistering with card services"); - ret = pcmcia_deregister_client(link->handle); - if (ret != CS_SUCCESS) - cs_error(link->handle, DeregisterClient, ret); + pcmciamtd_release(link); } - - link->state |= DEV_STALE_LINK; } @@ -807,7 +793,7 @@ static dev_link_t *pcmciamtd_attach(void) ret = pcmcia_register_client(&link->handle, &client_reg); if (ret != 0) { cs_error(link->handle, RegisterClient, ret); - pcmciamtd_detach(link); + pcmciamtd_detach(link->handle); return NULL; } DEBUG(2, "link = %p", link); @@ -847,7 +833,7 @@ static struct pcmcia_driver pcmciamtd_driver = { }, .attach = pcmciamtd_attach, .event = pcmciamtd_event, - .detach = pcmciamtd_detach, + .remove = pcmciamtd_detach, .owner = THIS_MODULE, .id_table = pcmciamtd_ids, .suspend = pcmciamtd_suspend, -- cgit v1.1 From b463581154f3f3eecda27cae60df813fefcd84d3 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Mon, 14 Nov 2005 21:25:35 +0100 Subject: [PATCH] pcmcia: remove dev_list from drivers The linked list of devices managed by each PCMCIA driver is, in very most cases, unused. Therefore, remove it from many drivers. Signed-off-by: Dominik Brodowski --- drivers/mtd/maps/pcmciamtd.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers/mtd/maps') diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index 3ddcb1b..93c05df 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -67,7 +67,6 @@ struct pcmciamtd_dev { static dev_info_t dev_info = "pcmciamtd"; -static dev_link_t *dev_list; /* Module parameters */ @@ -782,8 +781,7 @@ static dev_link_t *pcmciamtd_attach(void) link->conf.Attributes = 0; link->conf.IntType = INT_MEMORY; - link->next = dev_list; - dev_list = link; + link->next = NULL; /* Register with Card Services */ client_reg.dev_info = &dev_info; @@ -865,7 +863,6 @@ static void __exit exit_pcmciamtd(void) { DEBUG(1, DRIVER_DESC " unloading"); pcmcia_unregister_driver(&pcmciamtd_driver); - BUG_ON(dev_list != NULL); } module_init(init_pcmciamtd); -- cgit v1.1 From f8cfa618dccbdc6dab5297f75779566a388a98fd Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Mon, 14 Nov 2005 21:25:51 +0100 Subject: [PATCH] pcmcia: unify attach, EVENT_CARD_INSERTION handlers into one probe callback Unify the EVENT_CARD_INSERTION and "attach" callbacks to one unified probe() callback. As all in-kernel drivers are changed to this new callback, there will be no temporary backwards-compatibility. Inside a probe() function, each driver _must_ set struct pcmcia_device *p_dev->instance and instance->handle correctly. With these patches, the basic driver interface for 16-bit PCMCIA drivers now has the classic four callbacks known also from other buses: int (*probe) (struct pcmcia_device *dev); void (*remove) (struct pcmcia_device *dev); int (*suspend) (struct pcmcia_device *dev); int (*resume) (struct pcmcia_device *dev); Signed-off-by: Dominik Brodowski --- drivers/mtd/maps/pcmciamtd.c | 54 ++++++++------------------------------------ 1 file changed, 9 insertions(+), 45 deletions(-) (limited to 'drivers/mtd/maps') diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index 93c05df..f0f8916 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -66,8 +66,6 @@ struct pcmciamtd_dev { }; -static dev_info_t dev_info = "pcmciamtd"; - /* Module parameters */ /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */ @@ -708,30 +706,6 @@ static int pcmciamtd_resume(struct pcmcia_device *dev) return 0; } -/* The card status event handler. Mostly, this schedules other - * stuff to run after an event is received. A CARD_REMOVAL event - * also sets some flags to discourage the driver from trying - * to talk to the card any more. - */ - -static int pcmciamtd_event(event_t event, int priority, - event_callback_args_t *args) -{ - dev_link_t *link = args->client_data; - - DEBUG(1, "event=0x%06x", event); - switch (event) { - case CS_EVENT_CARD_INSERTION: - DEBUG(2, "EVENT_CARD_INSERTION"); - link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; - pcmciamtd_config(link); - break; - default: - DEBUG(2, "Unknown event %d", event); - } - return 0; -} - /* This deletes a driver "instance". The device is de-registered * with Card Services. If it has been released, all local data @@ -762,16 +736,14 @@ static void pcmciamtd_detach(struct pcmcia_device *p_dev) * with Card Services. */ -static dev_link_t *pcmciamtd_attach(void) +static int pcmciamtd_attach(struct pcmcia_device *p_dev) { struct pcmciamtd_dev *dev; dev_link_t *link; - client_reg_t client_reg; - int ret; /* Create new memory card device */ dev = kmalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) return NULL; + if (!dev) return -ENOMEM; DEBUG(1, "dev=0x%p", dev); memset(dev, 0, sizeof(*dev)); @@ -782,20 +754,13 @@ static dev_link_t *pcmciamtd_attach(void) link->conf.IntType = INT_MEMORY; link->next = NULL; + link->handle = p_dev; + p_dev->instance = link; - /* Register with Card Services */ - client_reg.dev_info = &dev_info; - client_reg.Version = 0x0210; - client_reg.event_callback_args.client_data = link; - DEBUG(2, "Calling RegisterClient"); - ret = pcmcia_register_client(&link->handle, &client_reg); - if (ret != 0) { - cs_error(link->handle, RegisterClient, ret); - pcmciamtd_detach(link->handle); - return NULL; - } - DEBUG(2, "link = %p", link); - return link; + link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; + pcmciamtd_config(link); + + return 0; } static struct pcmcia_device_id pcmciamtd_ids[] = { @@ -829,8 +794,7 @@ static struct pcmcia_driver pcmciamtd_driver = { .drv = { .name = "pcmciamtd" }, - .attach = pcmciamtd_attach, - .event = pcmciamtd_event, + .probe = pcmciamtd_attach, .remove = pcmciamtd_detach, .owner = THIS_MODULE, .id_table = pcmciamtd_ids, -- cgit v1.1