Add pinctrl_bcm2835_rust.rs #1
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Richardhongyu
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Richardhongyu
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Great work! You can add more details about how to evaluate this driver and what you can do with this. Besides, you can add some links of the prior mails when we had touch out with the community.
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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.