diff options
Diffstat (limited to 'chip/stm32/spi.c')
| -rw-r--r-- | chip/stm32/spi.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/chip/stm32/spi.c b/chip/stm32/spi.c index 6e518e7d1e..ec8e078c73 100644 --- a/chip/stm32/spi.c +++ b/chip/stm32/spi.c @@ -22,6 +22,21 @@ #define CPUTS(outstr) cputs(CC_SPI, outstr) #define CPRINTF(format, args...) cprintf(CC_SPI, format, ## args) +/* DMA channel option */ +static const struct dma_option dma_tx_option[2] = { + {DMA_SPI1_TX, (void *)&stm32_spi_addr(STM32_SPI1_PORT)->data, + DMA_MSIZE_BYTE | DMA_PSIZE_HALF_WORD}, + {DMA_SPI2_TX, (void *)&stm32_spi_addr(STM32_SPI2_PORT)->data, + DMA_MSIZE_BYTE | DMA_PSIZE_HALF_WORD}, +}; + +static const struct dma_option dma_rx_option[2] = { + {DMA_SPI1_RX, (void *)&stm32_spi_addr(STM32_SPI1_PORT)->data, + DMA_MSIZE_BYTE | DMA_PSIZE_HALF_WORD}, + {DMA_SPI2_RX, (void *)&stm32_spi_addr(STM32_SPI2_PORT)->data, + DMA_MSIZE_BYTE | DMA_PSIZE_HALF_WORD}, +}; + /* Status register flags that we use */ enum { SR_RXNE = 1 << 0, @@ -179,7 +194,7 @@ static void reply(struct spi_ctlr *spi, struct dma_channel *txdma, /* Add the checksum and get ready to send */ msg[msg_len - 2] = sum & 0xff; msg[msg_len - 1] = SPI_MSG_PREAMBLE_BYTE; - dma_prepare_tx(txdma, msg_len, (void *)&spi->data, msg); + dma_prepare_tx(dma_tx_option[stm32_spi_port(spi)], msg_len, msg); /* Kick off the DMA to send the data */ dma_go(txdma); @@ -206,7 +221,8 @@ static void setup_for_transaction(struct spi_ctlr *spi) /* read a byte in case there is one, and the rx dma gets it */ dmac = REG16(&spi->data); dmac = DMA_CHANNEL_FOR_SPI_RX(spi); - dma_start_rx(dmac, sizeof(in_msg), (void *)&spi->data, in_msg); + dma_start_rx(dma_rx_option[stm32_spi_port(spi)], + sizeof(in_msg), in_msg); } /** |