From 552e450929a7298cc8834fd2824a60b2e914f70e Mon Sep 17 00:00:00 2001 From: Feng Tang Date: Wed, 20 Jan 2010 13:49:45 -0700 Subject: spi/dw_spi: refine the IRQ mode working flow Now dw_spi core fully supports 3 transfer modes: pure polling, DMA and IRQ mode. IRQ mode will use the FIFO half empty as the IRQ trigger, so each interface driver need set the fifo_len, so that core driver can handle it properly Signed-off-by: Feng Tang Signed-off-by: Grant Likely --- drivers/spi/dw_spi_pci.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/spi/dw_spi_pci.c') diff --git a/drivers/spi/dw_spi_pci.c b/drivers/spi/dw_spi_pci.c index 7980f14..1f0735f 100644 --- a/drivers/spi/dw_spi_pci.c +++ b/drivers/spi/dw_spi_pci.c @@ -73,6 +73,7 @@ static int __devinit spi_pci_probe(struct pci_dev *pdev, dws->num_cs = 4; dws->max_freq = 25000000; /* for Moorestwon */ dws->irq = pdev->irq; + dws->fifo_len = 40; /* FIFO has 40 words buffer */ ret = dw_spi_add_host(dws); if (ret) -- cgit v1.1