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drivers: dai: sai: use TDR/RDR for fifo base address computation

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Using the address of RDR/TDR for fifo base address computation
has the same effect as using the FSL_FEATURE_SAI_{TX/RX}_FIFO_BASEn
macro from NXP HAL. The only difference between the two is that
the macro is not defined for all SoCs so whenever we introduce
a new SoC that uses the SAI module we have to also introduce
the macro for said SoC. Using TDR/RDR has the advantage that
it doesn't require any additional changes to the NXP HAL.

Since we only support one data line per direction, it's fine
to just use RDR[0] and TDR[0] for the address computation.

Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
This commit is contained in:
Laurentiu Mihalcea 2024-02-22 15:45:08 +02:00 committed by Henrik Brix Andersen
parent 3bf61528cc
commit a1188a96ff
1 changed files with 4 additions and 4 deletions
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8
drivers/dai/nxp/sai/sai.h
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@ -101,13 +101,13 @@ LOG_MODULE_REGISTER(nxp_dai_sai);
DT_INST_PROP_OR(inst, rx_fifo_watermark,\
FSL_FEATURE_SAI_FIFO_COUNTn(UINT_TO_I2S(DT_INST_REG_ADDR(inst))) / 2)
/* used to retrieve TFR0's address based on SAI's physical address */
/* used to retrieve TDR0's address based on SAI's physical address */
#define SAI_TX_FIFO_BASE(inst)\
FSL_FEATURE_SAI_TX_FIFO_BASEn(UINT_TO_I2S(DT_INST_REG_ADDR(inst)), 0)
POINTER_TO_UINT(&(UINT_TO_I2S(DT_INST_REG_ADDR(inst))->TDR[0]))
/* used to retrieve RFR0's address based on SAI's physical address */
/* used to retrieve RDR0's address based on SAI's physical address */
#define SAI_RX_FIFO_BASE(inst)\
FSL_FEATURE_SAI_RX_FIFO_BASEn(UINT_TO_I2S(DT_INST_REG_ADDR(inst)), 0)
POINTER_TO_UINT(&(UINT_TO_I2S(DT_INST_REG_ADDR(inst))->RDR[0]))
/* internal macro used to retrieve the default TX/RX FIFO's size (in FIFO words) */
#define _SAI_FIFO_DEPTH(inst)\