Add pinctrl_bcm2835_rust.rs #1
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| macro_rules! FSEL_REG { | ||
| ($p:expr) => { | ||
| GPFSEL0 + (($p / 10) * 4) | ||
| }; | ||
| } | ||
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| macro_rules! FSEL_SHIFT { | ||
| ($p:expr) => { | ||
| (($p % 10) * 3) | ||
| }; | ||
| } | ||
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| macro_rules! GPIO_REG_OFFSET { | ||
| ($p:expr) => { | ||
| $p / 32 | ||
| }; | ||
| } | ||
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| macro_rules! GPIO_REG_SHIFT { | ||
| ($p:expr) => { | ||
| $p % 32 | ||
| }; | ||
| } |
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Why not move these to macro.rs of RFL of gpio related files?
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Rewrite GPIO registration part in
pinctrl-bcm2835.cusing Rust.pinctrl_bcm2835_rust.rshas been tested on thevirtmachine in QEMU, andlibgpiodcan successfully call the GPIO controller through the `pinctrl_bcm2835_rust'.Issue:
bcm2835_rustfails to register on Raspberry Pi 4B, and the error displayed in syslog is:pinctrl_bcm2835_rust: probe of fe200000.gpio failed with error -22
And KGDB and jlink cannot be used to debug this driver since both kgdb and jlink are based on the gpio driver on the board.
Changes needed:
bcm2835_ruston Raspberry Pi 4B.