#include <acpi/acpi_bus.h>
#include <asm/uaccess.h>
-#define ACPI_SNC_CLASS "sony"
-#define ACPI_SNC_HID "SNY5001"
-#define ACPI_SNC_DRIVER_NAME "ACPI Sony Notebook Control Driver v0.4"
+#define SONY_NC_CLASS "sony"
+#define SONY_NC_HID "SNY5001"
+#define SONY_NC_DRIVER_NAME "ACPI Sony Notebook Control Driver v0.4"
/* the device uses 1-based values, while the backlight subsystem uses
0-based values */
#define LOG_PFX KERN_WARNING "sony-laptop: "
MODULE_AUTHOR("Stelian Pop, Mattia Dongili");
-MODULE_DESCRIPTION(ACPI_SNC_DRIVER_NAME);
+MODULE_DESCRIPTION(SONY_NC_DRIVER_NAME);
MODULE_LICENSE("GPL");
static int debug;
MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
"the development of this driver");
-static ssize_t sony_acpi_show(struct device *, struct device_attribute *,
+/*********** Platform Device ***********/
+
+static atomic_t sony_pf_users = ATOMIC_INIT(0);
+static struct platform_driver sony_pf_driver = {
+ .driver = {
+ .name = "sony-laptop",
+ .owner = THIS_MODULE,
+ }
+};
+static struct platform_device *sony_pf_device;
+
+static int sony_pf_add(void)
+{
+ int ret = 0;
+
+ /* don't run again if already initialized */
+ if (atomic_add_return(1, &sony_pf_users) > 1)
+ return 0;
+
+ ret = platform_driver_register(&sony_pf_driver);
+ if (ret)
+ goto out;
+
+ sony_pf_device = platform_device_alloc("sony-laptop", -1);
+ if (!sony_pf_device) {
+ ret = -ENOMEM;
+ goto out_platform_registered;
+ }
+
+ ret = platform_device_add(sony_pf_device);
+ if (ret)
+ goto out_platform_alloced;
+
+ return 0;
+
+ out_platform_alloced:
+ platform_device_put(sony_pf_device);
+ sony_pf_device = NULL;
+ out_platform_registered:
+ platform_driver_unregister(&sony_pf_driver);
+ out:
+ atomic_dec(&sony_pf_users);
+ return ret;
+}
+
+static void sony_pf_remove(void)
+{
+ /* deregister only after the last user has gone */
+ if (!atomic_dec_and_test(&sony_pf_users))
+ return;
+
+ platform_device_del(sony_pf_device);
+ platform_device_put(sony_pf_device);
+ platform_driver_unregister(&sony_pf_driver);
+}
+
+/*********** SNC (SNY5001) Device ***********/
+
+static ssize_t sony_nc_sysfs_show(struct device *, struct device_attribute *,
char *);
-static ssize_t sony_acpi_store(struct device *, struct device_attribute *,
+static ssize_t sony_nc_sysfs_store(struct device *, struct device_attribute *,
const char *, size_t);
static int boolean_validate(const int, const int);
static int brightness_default_validate(const int, const int);
#define SNC_VALIDATE_IN 0
#define SNC_VALIDATE_OUT 1
-struct sony_acpi_value {
+struct sony_nc_value {
char *name; /* name of the entry */
char **acpiget; /* names of the ACPI get function */
char **acpiset; /* names of the ACPI set function */
struct device_attribute devattr; /* sysfs atribute */
};
-#define HANDLE_NAMES(_name, _values...) \
+#define SNC_HANDLE_NAMES(_name, _values...) \
static char *snc_##_name[] = { _values, NULL }
-#define SONY_ACPI_VALUE(_name, _getters, _setters, _validate, _debug) \
+#define SNC_HANDLE(_name, _getters, _setters, _validate, _debug) \
{ \
.name = __stringify(_name), \
.acpiget = _getters, \
.acpiset = _setters, \
.validate = _validate, \
.debug = _debug, \
- .devattr = __ATTR(_name, 0, sony_acpi_show, sony_acpi_store), \
+ .devattr = __ATTR(_name, 0, sony_nc_sysfs_show, sony_nc_sysfs_store), \
}
-#define SONY_ACPI_VALUE_NULL { .name = NULL }
+#define SNC_HANDLE_NULL { .name = NULL }
-HANDLE_NAMES(fnkey_get, "GHKE");
+SNC_HANDLE_NAMES(fnkey_get, "GHKE");
-HANDLE_NAMES(brightness_def_get, "GPBR");
-HANDLE_NAMES(brightness_def_set, "SPBR");
+SNC_HANDLE_NAMES(brightness_def_get, "GPBR");
+SNC_HANDLE_NAMES(brightness_def_set, "SPBR");
-HANDLE_NAMES(cdpower_get, "GCDP");
-HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");
+SNC_HANDLE_NAMES(cdpower_get, "GCDP");
+SNC_HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");
-HANDLE_NAMES(audiopower_get, "GAZP");
-HANDLE_NAMES(audiopower_set, "AZPW");
+SNC_HANDLE_NAMES(audiopower_get, "GAZP");
+SNC_HANDLE_NAMES(audiopower_set, "AZPW");
-HANDLE_NAMES(lanpower_get, "GLNP");
-HANDLE_NAMES(lanpower_set, "LNPW");
+SNC_HANDLE_NAMES(lanpower_get, "GLNP");
+SNC_HANDLE_NAMES(lanpower_set, "LNPW");
-HANDLE_NAMES(PID_get, "GPID");
+SNC_HANDLE_NAMES(PID_get, "GPID");
-HANDLE_NAMES(CTR_get, "GCTR");
-HANDLE_NAMES(CTR_set, "SCTR");
+SNC_HANDLE_NAMES(CTR_get, "GCTR");
+SNC_HANDLE_NAMES(CTR_set, "SCTR");
-HANDLE_NAMES(PCR_get, "GPCR");
-HANDLE_NAMES(PCR_set, "SPCR");
+SNC_HANDLE_NAMES(PCR_get, "GPCR");
+SNC_HANDLE_NAMES(PCR_set, "SPCR");
-HANDLE_NAMES(CMI_get, "GCMI");
-HANDLE_NAMES(CMI_set, "SCMI");
+SNC_HANDLE_NAMES(CMI_get, "GCMI");
+SNC_HANDLE_NAMES(CMI_set, "SCMI");
-static struct sony_acpi_value sony_acpi_values[] = {
- SONY_ACPI_VALUE(brightness_default, snc_brightness_def_get,
+static struct sony_nc_value sony_nc_values[] = {
+ SNC_HANDLE(brightness_default, snc_brightness_def_get,
snc_brightness_def_set, brightness_default_validate, 0),
- SONY_ACPI_VALUE(fnkey, snc_fnkey_get, NULL, NULL, 0),
- SONY_ACPI_VALUE(cdpower, snc_cdpower_get, snc_cdpower_set, boolean_validate, 0),
- SONY_ACPI_VALUE(audiopower, snc_audiopower_get, snc_audiopower_set,
+ SNC_HANDLE(fnkey, snc_fnkey_get, NULL, NULL, 0),
+ SNC_HANDLE(cdpower, snc_cdpower_get, snc_cdpower_set, boolean_validate, 0),
+ SNC_HANDLE(audiopower, snc_audiopower_get, snc_audiopower_set,
boolean_validate, 0),
- SONY_ACPI_VALUE(lanpower, snc_lanpower_get, snc_lanpower_set,
+ SNC_HANDLE(lanpower, snc_lanpower_get, snc_lanpower_set,
boolean_validate, 1),
/* unknown methods */
- SONY_ACPI_VALUE(PID, snc_PID_get, NULL, NULL, 1),
- SONY_ACPI_VALUE(CTR, snc_CTR_get, snc_CTR_set, NULL, 1),
- SONY_ACPI_VALUE(PCR, snc_PCR_get, snc_PCR_set, NULL, 1),
- SONY_ACPI_VALUE(CMI, snc_CMI_get, snc_CMI_set, NULL, 1),
- SONY_ACPI_VALUE_NULL
+ SNC_HANDLE(PID, snc_PID_get, NULL, NULL, 1),
+ SNC_HANDLE(CTR, snc_CTR_get, snc_CTR_set, NULL, 1),
+ SNC_HANDLE(PCR, snc_PCR_get, snc_PCR_set, NULL, 1),
+ SNC_HANDLE(CMI, snc_CMI_get, snc_CMI_set, NULL, 1),
+ SNC_HANDLE_NULL
};
-static acpi_handle sony_acpi_handle;
-static struct acpi_device *sony_acpi_acpi_device = NULL;
+static acpi_handle sony_nc_acpi_handle;
+static struct acpi_device *sony_nc_acpi_device = NULL;
/*
* acpi_evaluate_object wrappers
}
/*
- * sony_acpi_values input/output validate functions
+ * sony_nc_values input/output validate functions
*/
/* brightness_default_validate:
}
/*
- * Sysfs show/store common to all sony_acpi_values
+ * Sysfs show/store common to all sony_nc_values
*/
-static ssize_t sony_acpi_show(struct device *dev, struct device_attribute *attr,
+static ssize_t sony_nc_sysfs_show(struct device *dev, struct device_attribute *attr,
char *buffer)
{
int value;
- struct sony_acpi_value *item =
- container_of(attr, struct sony_acpi_value, devattr);
+ struct sony_nc_value *item =
+ container_of(attr, struct sony_nc_value, devattr);
if (!*item->acpiget)
return -EIO;
- if (acpi_callgetfunc(sony_acpi_handle, *item->acpiget, &value) < 0)
+ if (acpi_callgetfunc(sony_nc_acpi_handle, *item->acpiget, &value) < 0)
return -EIO;
if (item->validate)
return snprintf(buffer, PAGE_SIZE, "%d\n", value);
}
-static ssize_t sony_acpi_store(struct device *dev,
+static ssize_t sony_nc_sysfs_store(struct device *dev,
struct device_attribute *attr,
const char *buffer, size_t count)
{
int value;
- struct sony_acpi_value *item =
- container_of(attr, struct sony_acpi_value, devattr);
+ struct sony_nc_value *item =
+ container_of(attr, struct sony_nc_value, devattr);
if (!item->acpiset)
return -EIO;
if (value < 0)
return value;
- if (acpi_callsetfunc(sony_acpi_handle, *item->acpiset, value, NULL) < 0)
+ if (acpi_callsetfunc(sony_nc_acpi_handle, *item->acpiset, value, NULL) < 0)
return -EIO;
item->value = value;
item->valid = 1;
return count;
}
-/*
- * Platform device
- */
-static struct platform_driver sncpf_driver = {
- .driver = {
- .name = "sony-laptop",
- .owner = THIS_MODULE,
- }
-};
-static struct platform_device *sncpf_device;
-
-static int sony_snc_pf_add(void)
-{
- acpi_handle handle;
- struct sony_acpi_value *item;
- int ret = 0;
-
- ret = platform_driver_register(&sncpf_driver);
- if (ret)
- goto out;
-
- sncpf_device = platform_device_alloc("sony-laptop", -1);
- if (!sncpf_device) {
- ret = -ENOMEM;
- goto out_platform_registered;
- }
-
- ret = platform_device_add(sncpf_device);
- if (ret)
- goto out_platform_alloced;
-
- for (item = sony_acpi_values; item->name; ++item) {
-
- if (!debug && item->debug)
- continue;
-
- /* find the available acpiget as described in the DSDT */
- for (; item->acpiget && *item->acpiget; ++item->acpiget) {
- if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle,
- *item->acpiget,
- &handle))) {
- if (debug)
- printk(LOG_PFX "Found %s getter: %s\n",
- item->name, *item->acpiget);
- item->devattr.attr.mode |= S_IRUGO;
- break;
- }
- }
-
- /* find the available acpiset as described in the DSDT */
- for (; item->acpiset && *item->acpiset; ++item->acpiset) {
- if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle,
- *item->acpiset,
- &handle))) {
- if (debug)
- printk(LOG_PFX "Found %s setter: %s\n",
- item->name, *item->acpiset);
- item->devattr.attr.mode |= S_IWUSR;
- break;
- }
- }
-
- if (item->devattr.attr.mode != 0) {
- ret =
- device_create_file(&sncpf_device->dev,
- &item->devattr);
- if (ret)
- goto out_sysfs;
- }
- }
-
- return 0;
-
- out_sysfs:
- for (item = sony_acpi_values; item->name; ++item) {
- device_remove_file(&sncpf_device->dev, &item->devattr);
- }
- platform_device_del(sncpf_device);
- out_platform_alloced:
- platform_device_put(sncpf_device);
- out_platform_registered:
- platform_driver_unregister(&sncpf_driver);
- out:
- return ret;
-}
-
-static void sony_snc_pf_remove(void)
-{
- struct sony_acpi_value *item;
-
- for (item = sony_acpi_values; item->name; ++item) {
- device_remove_file(&sncpf_device->dev, &item->devattr);
- }
-
- platform_device_del(sncpf_device);
- platform_device_put(sncpf_device);
- platform_driver_unregister(&sncpf_driver);
-}
/*
* Backlight device
*/
static int sony_backlight_update_status(struct backlight_device *bd)
{
- return acpi_callsetfunc(sony_acpi_handle, "SBRT",
+ return acpi_callsetfunc(sony_nc_acpi_handle, "SBRT",
bd->props.brightness + 1, NULL);
}
{
int value;
- if (acpi_callgetfunc(sony_acpi_handle, "GBRT", &value))
+ if (acpi_callgetfunc(sony_nc_acpi_handle, "GBRT", &value))
return 0;
/* brightness levels are 1-based, while backlight ones are 0-based */
return value - 1;
{
if (debug)
printk(LOG_PFX "sony_acpi_notify, event: %d\n", event);
- acpi_bus_generate_event(sony_acpi_acpi_device, 1, event);
+ acpi_bus_generate_event(sony_nc_acpi_device, 1, event);
}
static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
/*
* ACPI device
*/
-static int sony_acpi_resume(struct acpi_device *device)
+static int sony_nc_resume(struct acpi_device *device)
{
- struct sony_acpi_value *item;
+ struct sony_nc_value *item;
- for (item = sony_acpi_values; item->name; item++) {
+ for (item = sony_nc_values; item->name; item++) {
int ret;
if (!item->valid)
continue;
- ret = acpi_callsetfunc(sony_acpi_handle, *item->acpiset,
+ ret = acpi_callsetfunc(sony_nc_acpi_handle, *item->acpiset,
item->value, NULL);
if (ret < 0) {
printk("%s: %d\n", __FUNCTION__, ret);
return 0;
}
-static int sony_acpi_add(struct acpi_device *device)
+static int sony_nc_add(struct acpi_device *device)
{
acpi_status status;
int result = 0;
acpi_handle handle;
+ struct sony_nc_value *item;
- sony_acpi_acpi_device = device;
+ sony_nc_acpi_device = device;
- sony_acpi_handle = device->handle;
+ sony_nc_acpi_handle = device->handle;
if (debug) {
- status = acpi_walk_namespace(ACPI_TYPE_METHOD, sony_acpi_handle,
+ status = acpi_walk_namespace(ACPI_TYPE_METHOD, sony_nc_acpi_handle,
1, sony_walk_callback, NULL, NULL);
if (ACPI_FAILURE(status)) {
printk(LOG_PFX "unable to walk acpi resources\n");
}
}
- status = acpi_install_notify_handler(sony_acpi_handle,
+ status = acpi_install_notify_handler(sony_nc_acpi_handle,
ACPI_DEVICE_NOTIFY,
sony_acpi_notify, NULL);
if (ACPI_FAILURE(status)) {
goto outwalk;
}
- if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle, "GBRT", &handle))) {
+ if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT", &handle))) {
sony_backlight_device = backlight_device_register("sony", NULL,
NULL,
&sony_backlight_ops);
}
- if (sony_snc_pf_add())
+ if (sony_pf_add())
goto outbacklight;
- printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully installed\n");
+ /* create sony_pf sysfs attributes related to the SNC device */
+ for (item = sony_nc_values; item->name; ++item) {
+
+ if (!debug && item->debug)
+ continue;
+
+ /* find the available acpiget as described in the DSDT */
+ for (; item->acpiget && *item->acpiget; ++item->acpiget) {
+ if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle,
+ *item->acpiget,
+ &handle))) {
+ if (debug)
+ printk(LOG_PFX "Found %s getter: %s\n",
+ item->name, *item->acpiget);
+ item->devattr.attr.mode |= S_IRUGO;
+ break;
+ }
+ }
+
+ /* find the available acpiset as described in the DSDT */
+ for (; item->acpiset && *item->acpiset; ++item->acpiset) {
+ if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle,
+ *item->acpiset,
+ &handle))) {
+ if (debug)
+ printk(LOG_PFX "Found %s setter: %s\n",
+ item->name, *item->acpiset);
+ item->devattr.attr.mode |= S_IWUSR;
+ break;
+ }
+ }
+
+ if (item->devattr.attr.mode != 0) {
+ result =
+ device_create_file(&sony_pf_device->dev,
+ &item->devattr);
+ if (result)
+ goto out_sysfs;
+ }
+ }
+
+ printk(KERN_INFO SONY_NC_DRIVER_NAME " successfully installed\n");
return 0;
+ out_sysfs:
+ for (item = sony_nc_values; item->name; ++item) {
+ device_remove_file(&sony_pf_device->dev, &item->devattr);
+ }
+ sony_pf_remove();
outbacklight:
if (sony_backlight_device)
backlight_device_unregister(sony_backlight_device);
- status = acpi_remove_notify_handler(sony_acpi_handle,
+ status = acpi_remove_notify_handler(sony_nc_acpi_handle,
ACPI_DEVICE_NOTIFY,
sony_acpi_notify);
if (ACPI_FAILURE(status))
return result;
}
-static int sony_acpi_remove(struct acpi_device *device, int type)
+static int sony_nc_remove(struct acpi_device *device, int type)
{
acpi_status status;
+ struct sony_nc_value *item;
if (sony_backlight_device)
backlight_device_unregister(sony_backlight_device);
- sony_acpi_acpi_device = NULL;
+ sony_nc_acpi_device = NULL;
- status = acpi_remove_notify_handler(sony_acpi_handle,
+ status = acpi_remove_notify_handler(sony_nc_acpi_handle,
ACPI_DEVICE_NOTIFY,
sony_acpi_notify);
if (ACPI_FAILURE(status))
printk(LOG_PFX "unable to remove notify handler\n");
- sony_snc_pf_remove();
+ for (item = sony_nc_values; item->name; ++item) {
+ device_remove_file(&sony_pf_device->dev, &item->devattr);
+ }
+
+ sony_pf_remove();
- printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully removed\n");
+ printk(KERN_INFO SONY_NC_DRIVER_NAME " successfully removed\n");
return 0;
}
-static struct acpi_driver sony_acpi_driver = {
- .name = ACPI_SNC_DRIVER_NAME,
- .class = ACPI_SNC_CLASS,
- .ids = ACPI_SNC_HID,
+static struct acpi_driver sony_nc_driver = {
+ .name = SONY_NC_DRIVER_NAME,
+ .class = SONY_NC_CLASS,
+ .ids = SONY_NC_HID,
.ops = {
- .add = sony_acpi_add,
- .remove = sony_acpi_remove,
- .resume = sony_acpi_resume,
+ .add = sony_nc_add,
+ .remove = sony_nc_remove,
+ .resume = sony_nc_resume,
},
};
-static int __init sony_acpi_init(void)
+static int __init sony_laptop_init(void)
{
- return acpi_bus_register_driver(&sony_acpi_driver);
+ return acpi_bus_register_driver(&sony_nc_driver);
}
-static void __exit sony_acpi_exit(void)
+static void __exit sony_laptop_exit(void)
{
- acpi_bus_unregister_driver(&sony_acpi_driver);
+ acpi_bus_unregister_driver(&sony_nc_driver);
}
-module_init(sony_acpi_init);
-module_exit(sony_acpi_exit);
+module_init(sony_laptop_init);
+module_exit(sony_laptop_exit);
projects / linux-2.6 / blobdiff