X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Facpi%2Fpower.c;h=62a5595ed8bc7551e7951b12dabb283662633b7f;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=373a3a95bb4e1b6d642b4f0e49ac96e18c1b5031;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 373a3a95b..62a5595ed 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -44,10 +44,8 @@ #include #include - #define _COMPONENT ACPI_POWER_COMPONENT -ACPI_MODULE_NAME ("acpi_power") - +ACPI_MODULE_NAME("acpi_power") #define ACPI_POWER_COMPONENT 0x00800000 #define ACPI_POWER_CLASS "power_resource" #define ACPI_POWER_DRIVER_NAME "ACPI Power Resource Driver" @@ -57,38 +55,36 @@ ACPI_MODULE_NAME ("acpi_power") #define ACPI_POWER_RESOURCE_STATE_OFF 0x00 #define ACPI_POWER_RESOURCE_STATE_ON 0x01 #define ACPI_POWER_RESOURCE_STATE_UNKNOWN 0xFF - -static int acpi_power_add (struct acpi_device *device); -static int acpi_power_remove (struct acpi_device *device, int type); +static int acpi_power_add(struct acpi_device *device); +static int acpi_power_remove(struct acpi_device *device, int type); static int acpi_power_open_fs(struct inode *inode, struct file *file); static struct acpi_driver acpi_power_driver = { - .name = ACPI_POWER_DRIVER_NAME, - .class = ACPI_POWER_CLASS, - .ids = ACPI_POWER_HID, - .ops = { - .add = acpi_power_add, - .remove = acpi_power_remove, - }, + .name = ACPI_POWER_DRIVER_NAME, + .class = ACPI_POWER_CLASS, + .ids = ACPI_POWER_HID, + .ops = { + .add = acpi_power_add, + .remove = acpi_power_remove, + }, }; -struct acpi_power_resource -{ - acpi_handle handle; - acpi_bus_id name; - u32 system_level; - u32 order; - int state; - int references; +struct acpi_power_resource { + acpi_handle handle; + acpi_bus_id name; + u32 system_level; + u32 order; + int state; + int references; }; -static struct list_head acpi_power_resource_list; +static struct list_head acpi_power_resource_list; static struct file_operations acpi_power_fops = { - .open = acpi_power_open_fs, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, + .open = acpi_power_open_fs, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, }; /* -------------------------------------------------------------------------- @@ -96,12 +92,11 @@ static struct file_operations acpi_power_fops = { -------------------------------------------------------------------------- */ static int -acpi_power_get_context ( - acpi_handle handle, - struct acpi_power_resource **resource) +acpi_power_get_context(acpi_handle handle, + struct acpi_power_resource **resource) { - int result = 0; - struct acpi_device *device = NULL; + int result = 0; + struct acpi_device *device = NULL; ACPI_FUNCTION_TRACE("acpi_power_get_context"); @@ -111,24 +106,21 @@ acpi_power_get_context ( result = acpi_bus_get_device(handle, &device); if (result) { ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Error getting context [%p]\n", - handle)); + handle)); return_VALUE(result); } - *resource = (struct acpi_power_resource *) acpi_driver_data(device); + *resource = (struct acpi_power_resource *)acpi_driver_data(device); if (!resource) return_VALUE(-ENODEV); return_VALUE(0); } - -static int -acpi_power_get_state ( - struct acpi_power_resource *resource) +static int acpi_power_get_state(struct acpi_power_resource *resource) { - acpi_status status = AE_OK; - unsigned long sta = 0; + acpi_status status = AE_OK; + unsigned long sta = 0; ACPI_FUNCTION_TRACE("acpi_power_get_state"); @@ -145,20 +137,16 @@ acpi_power_get_state ( resource->state = ACPI_POWER_RESOURCE_STATE_OFF; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] is %s\n", - resource->name, resource->state?"on":"off")); + resource->name, resource->state ? "on" : "off")); return_VALUE(0); } - -static int -acpi_power_get_list_state ( - struct acpi_handle_list *list, - int *state) +static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state) { - int result = 0; + int result = 0; struct acpi_power_resource *resource = NULL; - u32 i = 0; + u32 i = 0; ACPI_FUNCTION_TRACE("acpi_power_get_list_state"); @@ -167,7 +155,7 @@ acpi_power_get_list_state ( /* The state of the list is 'on' IFF all resources are 'on'. */ - for (i=0; icount; i++) { + for (i = 0; i < list->count; i++) { result = acpi_power_get_context(list->handles[i], &resource); if (result) return_VALUE(result); @@ -182,19 +170,16 @@ acpi_power_get_list_state ( } ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource list is %s\n", - *state?"on":"off")); + *state ? "on" : "off")); return_VALUE(result); } - -static int -acpi_power_on ( - acpi_handle handle) +static int acpi_power_on(acpi_handle handle) { - int result = 0; - acpi_status status = AE_OK; - struct acpi_device *device = NULL; + int result = 0; + acpi_status status = AE_OK; + struct acpi_device *device = NULL; struct acpi_power_resource *resource = NULL; ACPI_FUNCTION_TRACE("acpi_power_on"); @@ -205,10 +190,10 @@ acpi_power_on ( resource->references++; - if ((resource->references > 1) - || (resource->state == ACPI_POWER_RESOURCE_STATE_ON)) { + if ((resource->references > 1) + || (resource->state == ACPI_POWER_RESOURCE_STATE_ON)) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] already on\n", - resource->name)); + resource->name)); return_VALUE(0); } @@ -229,19 +214,16 @@ acpi_power_on ( device->power.state = ACPI_STATE_D0; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] turned on\n", - resource->name)); + resource->name)); return_VALUE(0); } - -static int -acpi_power_off_device ( - acpi_handle handle) +static int acpi_power_off_device(acpi_handle handle) { - int result = 0; - acpi_status status = AE_OK; - struct acpi_device *device = NULL; + int result = 0; + acpi_status status = AE_OK; + struct acpi_device *device = NULL; struct acpi_power_resource *resource = NULL; ACPI_FUNCTION_TRACE("acpi_power_off_device"); @@ -254,15 +236,15 @@ acpi_power_off_device ( resource->references--; if (resource->references) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Resource [%s] is still in use, dereferencing\n", - device->pnp.bus_id)); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Resource [%s] is still in use, dereferencing\n", + device->pnp.bus_id)); return_VALUE(0); } if (resource->state == ACPI_POWER_RESOURCE_STATE_OFF) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] already off\n", - device->pnp.bus_id)); + device->pnp.bus_id)); return_VALUE(0); } @@ -283,7 +265,7 @@ acpi_power_off_device ( device->power.state = ACPI_STATE_D3; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] turned off\n", - resource->name)); + resource->name)); return_VALUE(0); } @@ -293,13 +275,13 @@ acpi_power_off_device ( * 1. Power on the power resources required for the wakeup device * 2. Enable _PSW (power state wake) for the device if present */ -int acpi_enable_wakeup_device_power (struct acpi_device *dev) +int acpi_enable_wakeup_device_power(struct acpi_device *dev) { - union acpi_object arg = {ACPI_TYPE_INTEGER}; - struct acpi_object_list arg_list = {1, &arg}; - acpi_status status = AE_OK; - int i; - int ret = 0; + union acpi_object arg = { ACPI_TYPE_INTEGER }; + struct acpi_object_list arg_list = { 1, &arg }; + acpi_status status = AE_OK; + int i; + int ret = 0; ACPI_FUNCTION_TRACE("acpi_enable_wakeup_device_power"); if (!dev || !dev->wakeup.flags.valid) @@ -310,8 +292,8 @@ int acpi_enable_wakeup_device_power (struct acpi_device *dev) for (i = 0; i < dev->wakeup.resources.count; i++) { ret = acpi_power_on(dev->wakeup.resources.handles[i]); if (ret) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error transition power state\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Error transition power state\n")); dev->wakeup.flags.valid = 0; return_VALUE(-1); } @@ -333,20 +315,20 @@ int acpi_enable_wakeup_device_power (struct acpi_device *dev) * 1. Disable _PSW (power state wake) * 2. Shutdown down the power resources */ -int acpi_disable_wakeup_device_power (struct acpi_device *dev) +int acpi_disable_wakeup_device_power(struct acpi_device *dev) { - union acpi_object arg = {ACPI_TYPE_INTEGER}; - struct acpi_object_list arg_list = {1, &arg}; - acpi_status status = AE_OK; - int i; - int ret = 0; + union acpi_object arg = { ACPI_TYPE_INTEGER }; + struct acpi_object_list arg_list = { 1, &arg }; + acpi_status status = AE_OK; + int i; + int ret = 0; ACPI_FUNCTION_TRACE("acpi_disable_wakeup_device_power"); if (!dev || !dev->wakeup.flags.valid) return_VALUE(-1); - arg.integer.value = 0; + arg.integer.value = 0; /* Execute PSW */ status = acpi_evaluate_object(dev->handle, "_PSW", &arg_list, NULL); if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { @@ -359,8 +341,8 @@ int acpi_disable_wakeup_device_power (struct acpi_device *dev) for (i = 0; i < dev->wakeup.resources.count; i++) { ret = acpi_power_off_device(dev->wakeup.resources.handles[i]); if (ret) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error transition power state\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Error transition power state\n")); dev->wakeup.flags.valid = 0; return_VALUE(-1); } @@ -373,14 +355,12 @@ int acpi_disable_wakeup_device_power (struct acpi_device *dev) Device Power Management -------------------------------------------------------------------------- */ -int -acpi_power_get_inferred_state ( - struct acpi_device *device) +int acpi_power_get_inferred_state(struct acpi_device *device) { - int result = 0; - struct acpi_handle_list *list = NULL; - int list_state = 0; - int i = 0; + int result = 0; + struct acpi_handle_list *list = NULL; + int list_state = 0; + int i = 0; ACPI_FUNCTION_TRACE("acpi_power_get_inferred_state"); @@ -393,7 +373,7 @@ acpi_power_get_inferred_state ( * We know a device's inferred power state when all the resources * required for a given D-state are 'on'. */ - for (i=ACPI_STATE_D0; ipower.states[i].resources; if (list->count < 1) continue; @@ -413,23 +393,20 @@ acpi_power_get_inferred_state ( return_VALUE(0); } - -int -acpi_power_transition ( - struct acpi_device *device, - int state) +int acpi_power_transition(struct acpi_device *device, int state) { - int result = 0; - struct acpi_handle_list *cl = NULL; /* Current Resources */ - struct acpi_handle_list *tl = NULL; /* Target Resources */ - int i = 0; + int result = 0; + struct acpi_handle_list *cl = NULL; /* Current Resources */ + struct acpi_handle_list *tl = NULL; /* Target Resources */ + int i = 0; ACPI_FUNCTION_TRACE("acpi_power_transition"); if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3)) return_VALUE(-EINVAL); - if ((device->power.state < ACPI_STATE_D0) || (device->power.state > ACPI_STATE_D3)) + if ((device->power.state < ACPI_STATE_D0) + || (device->power.state > ACPI_STATE_D3)) return_VALUE(-ENODEV); cl = &device->power.states[device->power.state].resources; @@ -448,7 +425,7 @@ acpi_power_transition ( * First we reference all power resources required in the target list * (e.g. so the device doesn't lose power while transitioning). */ - for (i=0; icount; i++) { + for (i = 0; i < tl->count; i++) { result = acpi_power_on(tl->handles[i]); if (result) goto end; @@ -457,7 +434,7 @@ acpi_power_transition ( /* * Then we dereference all power resources used in the current list. */ - for (i=0; icount; i++) { + for (i = 0; i < cl->count; i++) { result = acpi_power_off_device(cl->handles[i]); if (result) goto end; @@ -465,21 +442,20 @@ acpi_power_transition ( /* We shouldn't change the state till all above operations succeed */ device->power.state = state; -end: + end: if (result) - ACPI_DEBUG_PRINT((ACPI_DB_WARN, - "Error transitioning device [%s] to D%d\n", - device->pnp.bus_id, state)); + ACPI_DEBUG_PRINT((ACPI_DB_WARN, + "Error transitioning device [%s] to D%d\n", + device->pnp.bus_id, state)); return_VALUE(result); } - /* -------------------------------------------------------------------------- FS Interface (/proc) -------------------------------------------------------------------------- */ -static struct proc_dir_entry *acpi_power_dir; +static struct proc_dir_entry *acpi_power_dir; static int acpi_power_seq_show(struct seq_file *seq, void *offset) { @@ -506,13 +482,12 @@ static int acpi_power_seq_show(struct seq_file *seq, void *offset) } seq_printf(seq, "system level: S%d\n" - "order: %d\n" - "reference count: %d\n", - resource->system_level, - resource->order, - resource->references); + "order: %d\n" + "reference count: %d\n", + resource->system_level, + resource->order, resource->references); -end: + end: return_VALUE(0); } @@ -521,11 +496,9 @@ static int acpi_power_open_fs(struct inode *inode, struct file *file) return single_open(file, acpi_power_seq_show, PDE(inode)->data); } -static int -acpi_power_add_fs ( - struct acpi_device *device) +static int acpi_power_add_fs(struct acpi_device *device) { - struct proc_dir_entry *entry = NULL; + struct proc_dir_entry *entry = NULL; ACPI_FUNCTION_TRACE("acpi_power_add_fs"); @@ -534,18 +507,18 @@ acpi_power_add_fs ( if (!acpi_device_dir(device)) { acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), - acpi_power_dir); + acpi_power_dir); if (!acpi_device_dir(device)) return_VALUE(-ENODEV); } /* 'status' [R] */ entry = create_proc_entry(ACPI_POWER_FILE_STATUS, - S_IRUGO, acpi_device_dir(device)); + S_IRUGO, acpi_device_dir(device)); if (!entry) ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Unable to create '%s' fs entry\n", - ACPI_POWER_FILE_STATUS)); + "Unable to create '%s' fs entry\n", + ACPI_POWER_FILE_STATUS)); else { entry->proc_fops = &acpi_power_fops; entry->data = acpi_driver_data(device); @@ -554,10 +527,7 @@ acpi_power_add_fs ( return_VALUE(0); } - -static int -acpi_power_remove_fs ( - struct acpi_device *device) +static int acpi_power_remove_fs(struct acpi_device *device) { ACPI_FUNCTION_TRACE("acpi_power_remove_fs"); @@ -571,20 +541,17 @@ acpi_power_remove_fs ( return_VALUE(0); } - /* -------------------------------------------------------------------------- Driver Interface -------------------------------------------------------------------------- */ -static int -acpi_power_add ( - struct acpi_device *device) +static int acpi_power_add(struct acpi_device *device) { - int result = 0; - acpi_status status = AE_OK; + int result = 0; + acpi_status status = AE_OK; struct acpi_power_resource *resource = NULL; - union acpi_object acpi_object; - struct acpi_buffer buffer = {sizeof(acpi_object), &acpi_object}; + union acpi_object acpi_object; + struct acpi_buffer buffer = { sizeof(acpi_object), &acpi_object }; ACPI_FUNCTION_TRACE("acpi_power_add"); @@ -630,22 +597,18 @@ acpi_power_add ( result = acpi_power_add_fs(device); if (result) goto end; - + printk(KERN_INFO PREFIX "%s [%s] (%s)\n", acpi_device_name(device), - acpi_device_bid(device), resource->state?"on":"off"); + acpi_device_bid(device), resource->state ? "on" : "off"); -end: + end: if (result) kfree(resource); - + return_VALUE(result); } - -static int -acpi_power_remove ( - struct acpi_device *device, - int type) +static int acpi_power_remove(struct acpi_device *device, int type) { struct acpi_power_resource *resource = NULL; @@ -654,7 +617,7 @@ acpi_power_remove ( if (!device || !acpi_driver_data(device)) return_VALUE(-EINVAL); - resource = (struct acpi_power_resource *) acpi_driver_data(device); + resource = (struct acpi_power_resource *)acpi_driver_data(device); acpi_power_remove_fs(device); @@ -663,10 +626,9 @@ acpi_power_remove ( return_VALUE(0); } - -static int __init acpi_power_init (void) +static int __init acpi_power_init(void) { - int result = 0; + int result = 0; ACPI_FUNCTION_TRACE("acpi_power_init"); @@ -689,4 +651,3 @@ static int __init acpi_power_init (void) } subsys_initcall(acpi_power_init); -