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// SPDX-License-Identifier: GPL-2.0
//! Firmware load
//!
//! C header: [`include/linux/firmware.h`](../../../../include/linux/firmware.h")
use crate::{
bindings,
error::Error,
error::Result,
device::{RawDevice},
str::CStr,
types::Opaque,
};
/// Pointer to a C firmware struct
pub struct Firmware {
pub fw: Opaque<*const bindings::firmware>,
fw_size: usize,
}
impl Firmware {
/// Create a new firmware instance.
pub const fn new() -> Self {
Self {
fw: Opaque::uninit(),
fw_size: 0,
}
}
pub fn request(&mut self, name: &CStr, dev: &dyn RawDevice) -> Result {
let ret = unsafe { bindings::request_firmware(self.fw.get(),
name.as_char_ptr(), dev.raw_device()) };
if ret != 0 {
return Err(Error::from_errno(ret));
}
self.fw_size = unsafe { (*(*self.fw.get())).size };
Ok(())
}
pub fn request_nowarn(&mut self, name: &CStr, dev: &dyn RawDevice) -> Result {
let ret = unsafe { bindings::firmware_request_nowarn(self.fw.get(),
name.as_char_ptr(), dev.raw_device()) };
if ret != 0 {
return Err(Error::from_errno(ret));
}
self.fw_size = unsafe { (*(*self.fw.get())).size };
Ok(())
}
pub fn size(&self) -> usize {
self.fw_size
}
}
impl Drop for Firmware {
fn drop(&mut self) {
unsafe {bindings::release_firmware(*self.fw.get())};
}
}
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