Add set_off_screen ioctl
This commit is contained in:
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.gitignore
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.gitignore
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/target
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482
Cargo.lock
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Cargo.lock
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||||
|
||||
[[package]]
|
||||
name = "windows-sys"
|
||||
version = "0.59.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
|
||||
dependencies = [
|
||||
"windows-targets",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-targets"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
|
||||
dependencies = [
|
||||
"windows_aarch64_gnullvm",
|
||||
"windows_aarch64_msvc",
|
||||
"windows_i686_gnu",
|
||||
"windows_i686_gnullvm",
|
||||
"windows_i686_msvc",
|
||||
"windows_x86_64_gnu",
|
||||
"windows_x86_64_gnullvm",
|
||||
"windows_x86_64_msvc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
|
||||
10
Cargo.toml
Normal file
10
Cargo.toml
Normal file
@ -0,0 +1,10 @@
|
||||
[package]
|
||||
name = "pinenote-set-offimage"
|
||||
version = "0.1.0"
|
||||
edition = "2024"
|
||||
|
||||
[dependencies]
|
||||
clap = { version = "4.5.39", features = ["derive"] }
|
||||
color-eyre = "0.6.5"
|
||||
eyre = "0.6.12"
|
||||
nix = { version = "0.30.1", features = ["ioctl"] }
|
||||
79
src/main.rs
Normal file
79
src/main.rs
Normal file
@ -0,0 +1,79 @@
|
||||
use clap::Parser;
|
||||
use eyre::{Context, ensure, eyre};
|
||||
use nix::ioctl_write_ptr;
|
||||
use std::{
|
||||
fs::File,
|
||||
io::Read,
|
||||
os::fd::AsRawFd,
|
||||
path::{Path, PathBuf},
|
||||
};
|
||||
|
||||
#[derive(Parser)]
|
||||
struct Opt {
|
||||
/// Path to the image-blob.
|
||||
pub path: PathBuf,
|
||||
}
|
||||
|
||||
const SCREEN_W: usize = 1404;
|
||||
const SCREEN_H: usize = 1872;
|
||||
|
||||
const BITS_PER_PIXEL: usize = 4;
|
||||
const FILE_SIZE: usize = SCREEN_W * SCREEN_H * BITS_PER_PIXEL / 8;
|
||||
|
||||
// const SPI_IOC_MAGIC: u8 = b'k'; // Defined in linux/spi/spidev.h
|
||||
// const SPI_IOC_TYPE_MESSAGE: u8 = 0;
|
||||
// ioctl_write_buf!(spi_transfer, SPI_IOC_MAGIC, SPI_IOC_TYPE_MESSAGE, spi_ioc_transfer);
|
||||
// #define DRM_IOCTL_ROCKCHIP_EBC_OFF_SCREEN DRM_IOWR(DRM_COMMAND_BASE + 0x01, struct drm_rockchip_ebc_off_screen)
|
||||
|
||||
#[repr(C)]
|
||||
struct DrmRockchipEbcOffScreen {
|
||||
info1: u64,
|
||||
ptr_screen_content: *const u8,
|
||||
}
|
||||
|
||||
const DRM_IOCTL_BASE: u8 = b'd';
|
||||
const DRM_COMMAND_BASE: u8 = 0x40;
|
||||
const ROCKCHIP_EBC_FILE: &str = "/dev/dri/by-path/platform-fdec0000.ebc-card";
|
||||
|
||||
ioctl_write_ptr!(
|
||||
set_off_screen,
|
||||
DRM_IOCTL_BASE,
|
||||
DRM_COMMAND_BASE + 1,
|
||||
DrmRockchipEbcOffScreen
|
||||
);
|
||||
|
||||
fn main() -> eyre::Result<()> {
|
||||
let opt = Opt::parse();
|
||||
color_eyre::install()?;
|
||||
|
||||
let image =
|
||||
read_file(&opt.path).wrap_err_with(|| eyre!("Failed to read file at {:?}", opt.path))?;
|
||||
|
||||
let set_off_screen_data = DrmRockchipEbcOffScreen {
|
||||
info1: 0, // TODO: what is this?
|
||||
ptr_screen_content: image.as_ptr(),
|
||||
};
|
||||
|
||||
let driver_file = File::options()
|
||||
.write(true)
|
||||
.open(ROCKCHIP_EBC_FILE)
|
||||
.wrap_err_with(|| eyre!("Failed to open rockchip ebc file at {ROCKCHIP_EBC_FILE:?}"))?;
|
||||
|
||||
unsafe { set_off_screen(driver_file.as_raw_fd(), &set_off_screen_data) }
|
||||
.wrap_err("ioctl error")?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn read_file(path: &Path) -> eyre::Result<Vec<u8>> {
|
||||
let mut file = File::open(path)?;
|
||||
let mut buf = vec![0u8; FILE_SIZE];
|
||||
file.read_exact(&mut buf[..])
|
||||
.wrap_err_with(|| eyre!("Expected a raw image file, of exactly {FILE_SIZE} bytes"))?;
|
||||
|
||||
// Try to read a single byte. If n != 0, it means the file was larger than FILE_SIZE
|
||||
let n = file.read(&mut [0u8])?;
|
||||
ensure!(n == 0, "File must be exacly {FILE_SIZE} bytes long");
|
||||
|
||||
Ok(buf)
|
||||
}
|
||||
Reference in New Issue
Block a user