diff options
Diffstat (limited to 'drivers/gpio/TODO')
| -rw-r--r-- | drivers/gpio/TODO | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/gpio/TODO b/drivers/gpio/TODO index 4a8b349f2483..7a09a4f58551 100644 --- a/drivers/gpio/TODO +++ b/drivers/gpio/TODO @@ -131,6 +131,11 @@ Work items: helpers (x86 inb()/outb()) and convert port-mapped I/O drivers to use this with dry-coding and sending to maintainers to test +- Move the MMIO GPIO specific fields out of struct gpio_chip into a + dedicated structure. Currently every GPIO chip has them if gpio-mmio is + enabled in Kconfig even if it itself doesn't register with the helper + library. + ------------------------------------------------------------------------------- Generic regmap GPIO @@ -183,16 +188,12 @@ remove the old ones and finally rename the new ones back to the old names. ------------------------------------------------------------------------------- -Extend the sysfs ABI to allow exporting lines by their HW offsets - -The need to support the sysfs GPIO class is one of the main obstacles to -removing the global GPIO numberspace from the kernel. In order to wean users -off using global numbers from user-space, extend the existing interface with -new per-gpiochip export/unexport attributes that allow to refer to GPIOs using -their hardware offsets within the chip. +Remove legacy sysfs features -Encourage users to switch to using them and eventually remove the existing -global export/unexport attribues. +We have two parallel per-chip class devices and per-exported-line attribute +groups in sysfs. One is using the obsolete global GPIO numberspace and the +second relies on hardware offsets of pins within the chip. Remove the former +once user-space has switched to using the latter. ------------------------------------------------------------------------------- |