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path: root/drivers/spi/spi-xilinx.c
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Diffstat (limited to 'drivers/spi/spi-xilinx.c')
-rw-r--r--drivers/spi/spi-xilinx.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index 7377d3b81302..1411548f4255 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -83,7 +83,7 @@ struct xilinx_spi {
void __iomem *regs; /* virt. address of the control registers */
int irq;
-
+ bool force_irq; /* force irq to setup master inhibit */
u8 *rx_ptr; /* pointer in the Tx buffer */
const u8 *tx_ptr; /* pointer in the Rx buffer */
u8 bytes_per_word;
@@ -248,7 +248,8 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
xspi->rx_ptr = t->rx_buf;
remaining_words = t->len / xspi->bytes_per_word;
- if (xspi->irq >= 0 && remaining_words > xspi->buffer_size) {
+ if (xspi->irq >= 0 &&
+ (xspi->force_irq || remaining_words > xspi->buffer_size)) {
u32 isr;
use_irq = true;
/* Inhibit irq to avoid spurious irqs on tx_empty*/
@@ -393,6 +394,7 @@ static int xilinx_spi_probe(struct platform_device *pdev)
struct resource *res;
int ret, num_cs = 0, bits_per_word;
struct spi_master *master;
+ bool force_irq = false;
u32 tmp;
u8 i;
@@ -400,6 +402,7 @@ static int xilinx_spi_probe(struct platform_device *pdev)
if (pdata) {
num_cs = pdata->num_chipselect;
bits_per_word = pdata->bits_per_word;
+ force_irq = pdata->force_irq;
} else {
of_property_read_u32(pdev->dev.of_node, "xlnx,num-ss-bits",
&num_cs);
@@ -477,6 +480,8 @@ static int xilinx_spi_probe(struct platform_device *pdev)
dev_name(&pdev->dev), xspi);
if (ret)
return ret;
+
+ xspi->force_irq = force_irq;
}
/* SPI controller initializations */