diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi_bfin5xx.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index 0bbe19eafc2..5acec9ff017 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -559,9 +559,13 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id) struct driver_data *drv_data = dev_id; struct chip_data *chip = drv_data->cur_chip; struct spi_message *msg = drv_data->cur_msg; + unsigned short dmastat = get_dma_curr_irqstat(drv_data->dma_channel); u16 spistat = read_STAT(drv_data); - dev_dbg(&drv_data->pdev->dev, "in dma_irq_handler\n"); + dev_dbg(&drv_data->pdev->dev, + "in dma_irq_handler dmastat:0x%x spistat:0x%x\n", + dmastat, spistat); + clear_dma_irqstat(drv_data->dma_channel); /* Wait for DMA to complete */ @@ -631,6 +635,7 @@ static void pump_transfers(unsigned long data) /* Handle for abort */ if (message->state == ERROR_STATE) { + dev_dbg(&drv_data->pdev->dev, "transfer: we've hit an error\n"); message->status = -EIO; giveback(drv_data); return; @@ -638,6 +643,7 @@ static void pump_transfers(unsigned long data) /* Handle end of message */ if (message->state == DONE_STATE) { + dev_dbg(&drv_data->pdev->dev, "transfer: all done!\n"); message->status = 0; giveback(drv_data); return; @@ -645,6 +651,7 @@ static void pump_transfers(unsigned long data) /* Delay if requested at end of transfer */ if (message->state == RUNNING_STATE) { + dev_dbg(&drv_data->pdev->dev, "transfer: still running ...\n"); previous = list_entry(transfer->transfer_list.prev, struct spi_transfer, transfer_list); if (previous->delay_usecs) @@ -806,7 +813,8 @@ static void pump_transfers(unsigned long data) dma_config = (RESTART | dma_width | DI_EN); if (drv_data->rx != NULL) { /* set transfer mode, and enable SPI */ - dev_dbg(&drv_data->pdev->dev, "doing DMA in.\n"); + dev_dbg(&drv_data->pdev->dev, "doing DMA in to %p (size %zx)\n", + drv_data->rx, drv_data->len_in_bytes); /* invalidate caches, if needed */ if (bfin_addr_dcachable((unsigned long) drv_data->rx)) |