diff options
Diffstat (limited to 'drivers/spi/dw_spi.c')
| -rw-r--r-- | drivers/spi/dw_spi.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/drivers/spi/dw_spi.c b/drivers/spi/dw_spi.c index d256cb00604..56247853c29 100644 --- a/drivers/spi/dw_spi.c +++ b/drivers/spi/dw_spi.c @@ -181,10 +181,6 @@ static void flush(struct dw_spi *dws) wait_till_not_busy(dws); } -static void null_cs_control(u32 command) -{ -} - static int null_writer(struct dw_spi *dws) { u8 n_bytes = dws->n_bytes; @@ -322,7 +318,7 @@ static void giveback(struct dw_spi *dws) struct spi_transfer, transfer_list); - if (!last_transfer->cs_change) + if (!last_transfer->cs_change && dws->cs_control) dws->cs_control(MRST_SPI_DEASSERT); msg->state = NULL; @@ -396,6 +392,11 @@ static irqreturn_t interrupt_transfer(struct dw_spi *dws) static irqreturn_t dw_spi_irq(int irq, void *dev_id) { struct dw_spi *dws = dev_id; + u16 irq_status, irq_mask = 0x3f; + + irq_status = dw_readw(dws, isr) & irq_mask; + if (!irq_status) + return IRQ_NONE; if (!dws->cur_msg) { spi_mask_intr(dws, SPI_INT_TXEI); @@ -544,13 +545,13 @@ static void pump_transfers(unsigned long data) */ if (dws->cs_control) { if (dws->rx && dws->tx) - chip->tmode = 0x00; + chip->tmode = SPI_TMOD_TR; else if (dws->rx) - chip->tmode = 0x02; + chip->tmode = SPI_TMOD_RO; else - chip->tmode = 0x01; + chip->tmode = SPI_TMOD_TO; - cr0 &= ~(0x3 << SPI_MODE_OFFSET); + cr0 &= ~SPI_TMOD_MASK; cr0 |= (chip->tmode << SPI_TMOD_OFFSET); } @@ -699,9 +700,6 @@ static int dw_spi_setup(struct spi_device *spi) chip = kzalloc(sizeof(struct chip_data), GFP_KERNEL); if (!chip) return -ENOMEM; - - chip->cs_control = null_cs_control; - chip->enable_dma = 0; } /* @@ -883,7 +881,7 @@ int __devinit dw_spi_add_host(struct dw_spi *dws) dws->dma_inited = 0; dws->dma_addr = (dma_addr_t)(dws->paddr + 0x60); - ret = request_irq(dws->irq, dw_spi_irq, 0, + ret = request_irq(dws->irq, dw_spi_irq, IRQF_SHARED, "dw_spi", dws); if (ret < 0) { dev_err(&master->dev, "can not get IRQ\n"); |