diff options
Diffstat (limited to 'drivers/spi/spi-stm32.c')
| -rw-r--r-- | drivers/spi/spi-stm32.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c index 4a68abcdcc35..4c4ff074e3f6 100644 --- a/drivers/spi/spi-stm32.c +++ b/drivers/spi/spi-stm32.c @@ -1016,8 +1016,10 @@ end_irq: static irqreturn_t stm32fx_spi_irq_thread(int irq, void *dev_id) { struct spi_controller *ctrl = dev_id; + struct stm32_spi *spi = spi_controller_get_devdata(ctrl); spi_finalize_current_transfer(ctrl); + stm32fx_spi_disable(spi); return IRQ_HANDLED; } @@ -1055,7 +1057,7 @@ static irqreturn_t stm32h7_spi_irq_thread(int irq, void *dev_id) mask |= STM32H7_SPI_SR_TXP | STM32H7_SPI_SR_RXP; if (!(sr & mask)) { - dev_warn(spi->dev, "spurious IT (sr=0x%08x, ier=0x%08x)\n", + dev_vdbg(spi->dev, "spurious IT (sr=0x%08x, ier=0x%08x)\n", sr, ier); spin_unlock_irqrestore(&spi->lock, flags); return IRQ_NONE; @@ -1185,8 +1187,6 @@ static int stm32_spi_prepare_msg(struct spi_controller *ctrl, ~clrb) | setb, spi->base + spi->cfg->regs->cpol.reg); - stm32_spi_enable(spi); - spin_unlock_irqrestore(&spi->lock, flags); return 0; @@ -1204,6 +1204,7 @@ static void stm32fx_spi_dma_tx_cb(void *data) if (spi->cur_comm == SPI_SIMPLEX_TX || spi->cur_comm == SPI_3WIRE_TX) { spi_finalize_current_transfer(spi->ctrl); + stm32fx_spi_disable(spi); } } @@ -1218,6 +1219,7 @@ static void stm32_spi_dma_rx_cb(void *data) struct stm32_spi *spi = data; spi_finalize_current_transfer(spi->ctrl); + spi->cfg->disable(spi); } /** @@ -1305,6 +1307,8 @@ static int stm32fx_spi_transfer_one_irq(struct stm32_spi *spi) stm32_spi_set_bits(spi, STM32FX_SPI_CR2, cr2); + stm32_spi_enable(spi); + /* starting data transfer when buffer is loaded */ if (spi->tx_buf) spi->cfg->write_tx(spi); @@ -1341,6 +1345,8 @@ static int stm32h7_spi_transfer_one_irq(struct stm32_spi *spi) spin_lock_irqsave(&spi->lock, flags); + stm32_spi_enable(spi); + /* Be sure to have data in fifo before starting data transfer */ if (spi->tx_buf) stm32h7_spi_write_txfifo(spi); @@ -1372,6 +1378,8 @@ static void stm32fx_spi_transfer_one_dma_start(struct stm32_spi *spi) */ stm32_spi_set_bits(spi, STM32FX_SPI_CR2, STM32FX_SPI_CR2_ERRIE); } + + stm32_spi_enable(spi); } /** @@ -1405,6 +1413,8 @@ static void stm32h7_spi_transfer_one_dma_start(struct stm32_spi *spi) stm32_spi_set_bits(spi, STM32H7_SPI_IER, ier); + stm32_spi_enable(spi); + if (STM32_SPI_HOST_MODE(spi)) stm32_spi_set_bits(spi, STM32H7_SPI_CR1, STM32H7_SPI_CR1_CSTART); } |