diff options
Diffstat (limited to 'drivers/media/dvb-core/dvbdev.c')
| -rw-r--r-- | drivers/media/dvb-core/dvbdev.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index 60e9c2ba26be..787fe06df217 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -24,6 +24,7 @@ #include <linux/string.h> #include <linux/module.h> #include <linux/kernel.h> +#include <linux/i2c.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/device.h> @@ -941,6 +942,55 @@ out: return err; } +#if IS_ENABLED(CONFIG_I2C) +struct i2c_client *dvb_module_probe(const char *module_name, + const char *name, + struct i2c_adapter *adap, + unsigned char addr, + void *platform_data) +{ + struct i2c_client *client; + struct i2c_board_info *board_info; + + board_info = kzalloc(sizeof(*board_info), GFP_KERNEL); + if (!board_info) + return NULL; + + if (name) + strlcpy(board_info->type, name, I2C_NAME_SIZE); + else + strlcpy(board_info->type, module_name, I2C_NAME_SIZE); + + board_info->addr = addr; + board_info->platform_data = platform_data; + request_module(module_name); + client = i2c_new_device(adap, board_info); + if (client == NULL || client->dev.driver == NULL) { + kfree(board_info); + return NULL; + } + + if (!try_module_get(client->dev.driver->owner)) { + i2c_unregister_device(client); + client = NULL; + } + + kfree(board_info); + return client; +} +EXPORT_SYMBOL_GPL(dvb_module_probe); + +void dvb_module_release(struct i2c_client *client) +{ + if (!client) + return; + + module_put(client->dev.driver->owner); + i2c_unregister_device(client); +} +EXPORT_SYMBOL_GPL(dvb_module_release); +#endif + static int dvb_uevent(struct device *dev, struct kobj_uevent_env *env) { struct dvb_device *dvbdev = dev_get_drvdata(dev); |