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x1000: GPIO refactor

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The GPIO API was pretty clunky and pin settings were decentralized,
making it hard to see what was happening and making GPIO stuff look
like a mess, frankly.

Instead of passing clunky (port, pin) pairs everywhere, GPIOs are now
identified with a single int. The extra overhead should be minimal as
GPIO configuration is generally not on a performance-critical path.

Pin assignments are now mostly consolidated in gpio-target.h and put
in various tables so gpio_init() can assign most pins at boot time.

Most drivers no longer need to touch GPIOs and basic pin I/O stuff
can happen without config since pins are put into the right state.
IRQ pins still need to be configured manually before use.

Change-Id: Ic5326284b0b2a2f613e9e76a41cb50e24af3aa47
This commit is contained in:
Aidan MacDonald 2021-06-05 00:12:01 +01:00
parent 695d1701cd
commit e85bc74b30
17 changed files with 281 additions and 196 deletions
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2
firmware/SOURCES
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@ -1659,7 +1659,9 @@ target/mips/ingenic_x1000/pwm-x1000.c
target/mips/ingenic_x1000/sfc-x1000.c
target/mips/ingenic_x1000/system-x1000.c
target/mips/ingenic_x1000/timer-x1000.c
#ifndef USB_NONE
target/mips/ingenic_x1000/usb-x1000.c
#endif
#if (CONFIG_STORAGE & (STORAGE_SD|STORAGE_MMC|STORAGE_ATA))
target/mips/ingenic_x1000/msc-x1000.c
#endif