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We can no longer rely on the return value of devm_snd_dmaengine_pcm_register(...) to check if the DMA handle is declared in the DT. Previously this check activated PIO mode but currently dma_request_chan returns either a valid channel or -EPROBE_DEFER. In order to activate PIO mode check instead if the interrupt line is declared. This reflects better what is documented in the DT bindings (see Documentation/devicetree/bindings/sound/ designware-i2s.txt). Also, initialize use_pio variable which was never being set causing PIO mode to never work. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: Mark Brown <broonie@kernel.org> |
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| .. | ||
| designware_i2s.c | ||
| designware_pcm.c | ||
| Kconfig | ||
| local.h | ||
| Makefile | ||