On Thu, Mar 29, 2018 at 10:29 PM, H. Nikolaus Schaller hns@goldelico.com wrote:
Another issue I have fixed is that the pcal6524 has 4 registers per bank while the pcal9555a has only 2.
So, you mean it's still in non-working case in Linus' tree? Please, send patches!
This is encoded in the address constants for the new "L"-registers and has to be taken care of in pca953x_read_regs_24() and pca953x_write_regs_24().
But I still have another problem:
[ 4.808823] pca953x 4-0022: irq 186: unsupported type 8 [ 4.814303] genirq: Setting trigger mode 8 for irq 186 failed (pca953x_irq_set_type+0x0/0xa8)
This comes from https://elixir.bootlin.com/linux/v4.16-rc7/source/sound/soc/codecs/ts3a227e....
It appears that the pca953x driver/interrupt-controller can't handle IRQF_TRIGGER_LOW, but that is hard coded into the ts3a227 driver.
Anyone with knowledge and help about this issue?
This is easy to fix (not read datasheet for better solution though): emulate it via FALLING (LOW) and RISING (HIGH).