On Tue, Apr 14, 2020 at 7:09 PM Andy Shevchenko andriy.shevchenko@linux.intel.com wrote:
On Thu, Apr 09, 2020 at 02:58:26PM -0500, Pierre-Louis Bossart wrote:
The GPIOs are used e.g. on HifiBerry DAC+ HATs to control the LED (GPIO3) and the choice of the 44.1 (GPIO6) or 48 (GPIO3) kHz oscillator (when present).
Enable basic gpio_chip to get/set values and get/set directions. Tested with GPIO_LIB from sys/class/gpio, the LED turns on/off as desired.
One question, can this use existing GPIO infrastructure, like bgpio_init()? Ah, I see, that one operates over MMIO, while we would need something based on regmap API.
Bartosz, do we have plans to have bgpio_regmap_init() or alike?
Michael Walle is working on that: https://lore.kernel.org/linux-gpio/20200402203656.27047-11-michael@walle.cc/
I think we should try to merge it sooner rather than later. I can provide an ib-* branch for ASoC whenever we agreed on a basic generic driver.
Yours, Linus Walleij