Commit cbcc062a authored by Yong Wang's avatar Yong Wang Committed by Grant Likely

spi/dw_spi: Allow interrupt sharing

Allow interrupt sharing since exclusive interrupt line for
DW SPI controller is not provided on every platform.
Signed-off-by: default avatarYong Wang <yong.y.wang@intel.com>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 9d8f86b5
......@@ -396,6 +396,11 @@ 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);
......@@ -883,7 +888,7 @@ 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");
......
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