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/bluetooth/btuart_cs.c | 38 ++++++++++++++++++++++++-------------- 1 file changed, 24 insertions(+), 14 deletions(-) (limited to 'drivers/bluetooth/btuart_cs.c') diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c index 529a28a3209d..1828ba6ca25e 100644 --- a/drivers/bluetooth/btuart_cs.c +++ b/drivers/bluetooth/btuart_cs.c @@ -811,6 +811,28 @@ static void btuart_release(dev_link_t *link) link->state &= ~DEV_CONFIG; } +static int btuart_suspend(struct pcmcia_device *dev) +{ + dev_link_t *link = dev_to_instance(dev); + + link->state |= DEV_SUSPEND; + if (link->state & DEV_CONFIG) + pcmcia_release_configuration(link->handle); + + return 0; +} + +static int btuart_resume(struct pcmcia_device *dev) +{ + dev_link_t *link = dev_to_instance(dev); + + link->state &= ~DEV_SUSPEND; + if (DEV_OK(link)) + pcmcia_request_configuration(link->handle, &link->conf); + + return 0; +} + static int btuart_event(event_t event, int priority, event_callback_args_t *args) { @@ -829,20 +851,6 @@ static int btuart_event(event_t event, int priority, event_callback_args_t *args link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; btuart_config(link); break; - case CS_EVENT_PM_SUSPEND: - link->state |= DEV_SUSPEND; - /* Fall through... */ - case CS_EVENT_RESET_PHYSICAL: - if (link->state & DEV_CONFIG) - pcmcia_release_configuration(link->handle); - break; - case CS_EVENT_PM_RESUME: - link->state &= ~DEV_SUSPEND; - /* Fall through... */ - case CS_EVENT_CARD_RESET: - if (DEV_OK(link)) - pcmcia_request_configuration(link->handle, &link->conf); - break; } return 0; @@ -863,6 +871,8 @@ static struct pcmcia_driver btuart_driver = { .event = btuart_event, .detach = btuart_detach, .id_table = btuart_ids, + .suspend = btuart_suspend, + .resume = btuart_resume, }; static int __init init_btuart_cs(void) -- cgit v1.2.1 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/bluetooth/btuart_cs.c | 24 +++++------------------- 1 file changed, 5 insertions(+), 19 deletions(-) (limited to 'drivers/bluetooth/btuart_cs.c') diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c index 1828ba6ca25e..63221d383fda 100644 --- a/drivers/bluetooth/btuart_cs.c +++ b/drivers/bluetooth/btuart_cs.c @@ -91,7 +91,7 @@ static int btuart_event(event_t event, int priority, event_callback_args_t *args static dev_info_t dev_info = "btuart_cs"; static dev_link_t *btuart_attach(void); -static void btuart_detach(dev_link_t *); +static void btuart_detach(struct pcmcia_device *p_dev); static dev_link_t *dev_list = NULL; @@ -619,7 +619,7 @@ static dev_link_t *btuart_attach(void) ret = pcmcia_register_client(&link->handle, &client_reg); if (ret != CS_SUCCESS) { cs_error(link->handle, RegisterClient, ret); - btuart_detach(link); + btuart_detach(link->handle); return NULL; } @@ -627,11 +627,11 @@ static dev_link_t *btuart_attach(void) } -static void btuart_detach(dev_link_t *link) +static void btuart_detach(struct pcmcia_device *p_dev) { + dev_link_t *link = dev_to_instance(p_dev); btuart_info_t *info = link->priv; dev_link_t **linkp; - int ret; /* Locate device structure */ for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) @@ -644,12 +644,6 @@ static void btuart_detach(dev_link_t *link) if (link->state & DEV_CONFIG) btuart_release(link); - if (link->handle) { - ret = pcmcia_deregister_client(link->handle); - if (ret != CS_SUCCESS) - cs_error(link->handle, DeregisterClient, ret); - } - /* Unlink device structure, free bits */ *linkp = link->next; @@ -837,16 +831,8 @@ static int btuart_resume(struct pcmcia_device *dev) static int btuart_event(event_t event, int priority, event_callback_args_t *args) { dev_link_t *link = args->client_data; - btuart_info_t *info = link->priv; switch (event) { - case CS_EVENT_CARD_REMOVAL: - link->state &= ~DEV_PRESENT; - if (link->state & DEV_CONFIG) { - btuart_close(info); - btuart_release(link); - } - break; case CS_EVENT_CARD_INSERTION: link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; btuart_config(link); @@ -869,7 +855,7 @@ static struct pcmcia_driver btuart_driver = { }, .attach = btuart_attach, .event = btuart_event, - .detach = btuart_detach, + .remove = btuart_detach, .id_table = btuart_ids, .suspend = btuart_suspend, .resume = btuart_resume, -- cgit v1.2.1 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/bluetooth/btuart_cs.c | 18 +----------------- 1 file changed, 1 insertion(+), 17 deletions(-) (limited to 'drivers/bluetooth/btuart_cs.c') diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c index 63221d383fda..7b04f89f7a71 100644 --- a/drivers/bluetooth/btuart_cs.c +++ b/drivers/bluetooth/btuart_cs.c @@ -93,8 +93,6 @@ static dev_info_t dev_info = "btuart_cs"; static dev_link_t *btuart_attach(void); static void btuart_detach(struct pcmcia_device *p_dev); -static dev_link_t *dev_list = NULL; - /* Maximum baud rate */ #define SPEED_MAX 115200 @@ -610,8 +608,7 @@ static dev_link_t *btuart_attach(void) link->conf.IntType = INT_MEMORY_AND_IO; /* Register with Card Services */ - link->next = dev_list; - dev_list = link; + link->next = NULL; client_reg.dev_info = &dev_info; client_reg.Version = 0x0210; client_reg.event_callback_args.client_data = link; @@ -631,22 +628,10 @@ static void btuart_detach(struct pcmcia_device *p_dev) { dev_link_t *link = dev_to_instance(p_dev); btuart_info_t *info = link->priv; - dev_link_t **linkp; - - /* Locate device structure */ - for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) - if (*linkp == link) - break; - - if (*linkp == NULL) - return; if (link->state & DEV_CONFIG) btuart_release(link); - /* Unlink device structure, free bits */ - *linkp = link->next; - kfree(info); } @@ -870,7 +855,6 @@ static int __init init_btuart_cs(void) static void __exit exit_btuart_cs(void) { pcmcia_unregister_driver(&btuart_driver); - BUG_ON(dev_list != NULL); } module_init(init_btuart_cs); -- cgit v1.2.1 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/bluetooth/btuart_cs.c | 46 +++++++++---------------------------------- 1 file changed, 9 insertions(+), 37 deletions(-) (limited to 'drivers/bluetooth/btuart_cs.c') diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c index 7b04f89f7a71..7b4bff4cfa2d 100644 --- a/drivers/bluetooth/btuart_cs.c +++ b/drivers/bluetooth/btuart_cs.c @@ -86,11 +86,7 @@ typedef struct btuart_info_t { static void btuart_config(dev_link_t *link); static void btuart_release(dev_link_t *link); -static int btuart_event(event_t event, int priority, event_callback_args_t *args); -static dev_info_t dev_info = "btuart_cs"; - -static dev_link_t *btuart_attach(void); static void btuart_detach(struct pcmcia_device *p_dev); @@ -580,17 +576,15 @@ static int btuart_close(btuart_info_t *info) return 0; } -static dev_link_t *btuart_attach(void) +static int btuart_attach(struct pcmcia_device *p_dev) { btuart_info_t *info; - client_reg_t client_reg; dev_link_t *link; - int ret; /* Create new info device */ info = kzalloc(sizeof(*info), GFP_KERNEL); if (!info) - return NULL; + return -ENOMEM; link = &info->link; link->priv = info; @@ -607,20 +601,13 @@ static dev_link_t *btuart_attach(void) link->conf.Vcc = 50; link->conf.IntType = INT_MEMORY_AND_IO; - /* Register with Card Services */ - link->next = NULL; - client_reg.dev_info = &dev_info; - client_reg.Version = 0x0210; - client_reg.event_callback_args.client_data = link; - - ret = pcmcia_register_client(&link->handle, &client_reg); - if (ret != CS_SUCCESS) { - cs_error(link->handle, RegisterClient, ret); - btuart_detach(link->handle); - return NULL; - } + link->handle = p_dev; + p_dev->instance = link; + + link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; + btuart_config(link); - return link; + return 0; } @@ -813,20 +800,6 @@ static int btuart_resume(struct pcmcia_device *dev) } -static int btuart_event(event_t event, int priority, event_callback_args_t *args) -{ - dev_link_t *link = args->client_data; - - switch (event) { - case CS_EVENT_CARD_INSERTION: - link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; - btuart_config(link); - break; - } - - return 0; -} - static struct pcmcia_device_id btuart_ids[] = { /* don't use this driver. Use serial_cs + hci_uart instead */ PCMCIA_DEVICE_NULL @@ -838,8 +811,7 @@ static struct pcmcia_driver btuart_driver = { .drv = { .name = "btuart_cs", }, - .attach = btuart_attach, - .event = btuart_event, + .probe = btuart_attach, .remove = btuart_detach, .id_table = btuart_ids, .suspend = btuart_suspend, -- cgit v1.2.1