[PATCH v5 10/11] serial: 8250_lpss: enable MSI for Intel Quark

Andy Shevchenko
2016-05-06T15:17:35Z

Intel Quark SoC supports MSI for LPSS, in particular for UART. Enable MSI for
Intel Quark.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/tty/serial/8250/8250_lpss.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/drivers/tty/serial/8250/8250_lpss.c b/drivers/tty/serial/8250/8250_lpss.c
index 3beb3aa..c83fd51 100644
--- a/drivers/tty/serial/8250/8250_lpss.c
+++ b/drivers/tty/serial/8250/8250_lpss.c
@@ -150,6 +150,17 @@ static int byt_serial_setup(struct lpss8250 *lpss, struct uart_port *port)
return 0;
}

+static int qrk_serial_setup(struct lpss8250 *lpss, struct uart_port *port)
+{
+ struct pci_dev *pdev = to_pci_dev(port->dev);
+
+ pci_enable_msi(pdev);
+
+ port->irq = pdev->irq;
+
+ return 0;
+}
+
static bool lpss8250_dma_filter(struct dma_chan *chan, void *param)
{
struct dw_dma_slave *dws = param;
@@ -260,6 +271,7 @@ static const struct lpss8250_board byt_board = {
static const struct lpss8250_board qrk_board = {
.freq = 44236800,
.base_baud = 2764800,
+ .setup = qrk_serial_setup,
};

#define LPSS_DEVICE(id, board) { PCI_VDEVICE(INTEL, id), (kernel_ulong_t)&board }
--
2.8.1