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drivers: dai: sai: use "dmas" property for handshake encoding

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Since a DMA cell now allows specifying a channel and a MUX value
there's no need to fetch these values from the HAL. This, in turn,
allows for more flexibility and reduces the coding effort for new
platforms that want to use the SAI driver.

Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
This commit is contained in:
Laurentiu Mihalcea 2024-02-08 12:10:10 +02:00 • committed by Henrik Brix Andersen
commit b803e06099
2 changed files with 11 additions and 2 deletions
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4
drivers/dai/nxp/sai/sai.c
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@ -865,13 +865,13 @@ BUILD_ASSERT(SAI_TX_SYNC_MODE(inst) != SAI_RX_SYNC_MODE(inst) || \
static const struct dai_properties sai_tx_props_##inst = { \
.fifo_address = SAI_TX_FIFO_BASE(inst), \
.fifo_depth = SAI_FIFO_DEPTH(inst) * CONFIG_SAI_FIFO_WORD_SIZE, \
.dma_hs_id = SAI_TX_DMA_MUX(inst), \
.dma_hs_id = SAI_TX_RX_DMA_HANDSHAKE(inst, tx), \
}; \
\
static const struct dai_properties sai_rx_props_##inst = { \
.fifo_address = SAI_RX_FIFO_BASE(inst), \
.fifo_depth = SAI_FIFO_DEPTH(inst) * CONFIG_SAI_FIFO_WORD_SIZE, \
.dma_hs_id = SAI_RX_DMA_MUX(inst), \
.dma_hs_id = SAI_TX_RX_DMA_HANDSHAKE(inst, rx), \
}; \
\
void irq_config_##inst(void) \

9
drivers/dai/nxp/sai/sai.h
View file

@ -137,6 +137,15 @@ LOG_MODULE_REGISTER(nxp_dai_sai);
#define SAI_RX_SYNC_MODE(inst)\
DT_INST_PROP_OR(inst, rx_sync_mode, kSAI_ModeAsync)
/* used to retrieve the handshake value for given direction. The handshake
* is computed as follows:
* handshake = CHANNEL_ID | (MUX_VALUE << 8)
* The channel ID and MUX value are each encoded in 8 bits.
*/
#define SAI_TX_RX_DMA_HANDSHAKE(inst, dir)\
((DT_INST_DMAS_CELL_BY_NAME(inst, dir, channel) & GENMASK(7, 0)) |\
((DT_INST_DMAS_CELL_BY_NAME(inst, dir, mux) << 8) & GENMASK(15, 8)))
/* utility macros */
/* invert a clock's polarity. This works because a clock's polarity is expressed