diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/firmware_class.c | 69 |
1 files changed, 41 insertions, 28 deletions
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index 4acb2c5733c..98f6c02d679 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -62,14 +62,16 @@ firmware_timeout_show(struct class *class, char *buf) } /** - * firmware_timeout_store: - * Description: + * firmware_timeout_store - set number of seconds to wait for firmware + * @class: device class pointer + * @buf: buffer to scan for timeout value + * @count: number of bytes in @buf + * * Sets the number of seconds to wait for the firmware. Once - * this expires an error will be return to the driver and no + * this expires an error will be returned to the driver and no * firmware will be provided. * - * Note: zero means 'wait for ever' - * + * Note: zero means 'wait forever'. **/ static ssize_t firmware_timeout_store(struct class *class, const char *buf, size_t count) @@ -123,12 +125,15 @@ firmware_loading_show(struct class_device *class_dev, char *buf) } /** - * firmware_loading_store: - loading control file - * Description: + * firmware_loading_store - set value in the 'loading' control file + * @class_dev: class_device pointer + * @buf: buffer to scan for loading control value + * @count: number of bytes in @buf + * * The relevant values are: * * 1: Start a load, discarding any previous partial load. - * 0: Conclude the load and handle the data to the driver code. + * 0: Conclude the load and hand the data to the driver code. * -1: Conclude the load with an error and discard any written data. **/ static ssize_t @@ -201,6 +206,7 @@ out: up(&fw_lock); return ret_count; } + static int fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size) { @@ -227,11 +233,13 @@ fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size) } /** - * firmware_data_write: + * firmware_data_write - write method for firmware + * @kobj: kobject for the class_device + * @buffer: buffer being written + * @offset: buffer offset for write in total data store area + * @count: buffer size * - * Description: - * - * Data written to the 'data' attribute will be later handled to + * Data written to the 'data' attribute will be later handed to * the driver as a firmware image. **/ static ssize_t @@ -264,6 +272,7 @@ out: up(&fw_lock); return retval; } + static struct bin_attribute firmware_attr_data_tmpl = { .attr = {.name = "data", .mode = 0644, .owner = THIS_MODULE}, .size = 0, @@ -448,13 +457,16 @@ out: /** * request_firmware: - request firmware to hotplug and wait for it - * Description: - * @firmware will be used to return a firmware image by the name + * @firmware_p: pointer to firmware image + * @name: name of firmware file + * @device: device for which firmware is being loaded + * + * @firmware_p will be used to return a firmware image by the name * of @name for device @device. * * Should be called from user context where sleeping is allowed. * - * @name will be use as $FIRMWARE in the hotplug environment and + * @name will be used as $FIRMWARE in the hotplug environment and * should be distinctive enough not to be confused with any other * firmware image for this or any other device. **/ @@ -468,6 +480,7 @@ request_firmware(const struct firmware **firmware_p, const char *name, /** * release_firmware: - release the resource associated with a firmware image + * @fw: firmware resource to release **/ void release_firmware(const struct firmware *fw) @@ -480,8 +493,10 @@ release_firmware(const struct firmware *fw) /** * register_firmware: - provide a firmware image for later usage + * @name: name of firmware image file + * @data: buffer pointer for the firmware image + * @size: size of the data buffer area * - * Description: * Make sure that @data will be available by requesting firmware @name. * * Note: This will not be possible until some kind of persistence @@ -526,21 +541,19 @@ request_firmware_work_func(void *arg) } /** - * request_firmware_nowait: + * request_firmware_nowait: asynchronous version of request_firmware + * @module: module requesting the firmware + * @hotplug: invokes hotplug event to copy the firmware image if this flag + * is non-zero else the firmware copy must be done manually. + * @name: name of firmware file + * @device: device for which firmware is being loaded + * @context: will be passed over to @cont, and + * @fw may be %NULL if firmware request fails. + * @cont: function will be called asynchronously when the firmware + * request is over. * - * Description: * Asynchronous variant of request_firmware() for contexts where * it is not possible to sleep. - * - * @hotplug invokes hotplug event to copy the firmware image if this flag - * is non-zero else the firmware copy must be done manually. - * - * @cont will be called asynchronously when the firmware request is over. - * - * @context will be passed over to @cont. - * - * @fw may be %NULL if firmware request fails. - * **/ int request_firmware_nowait( |