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Commit 60a9244a authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Greg Kroah-Hartman
Browse files

serial: 8250_lpss: enable MSI for Intel Quark 



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

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: default avatarBryan O'Donoghue <pure.logic@nexus-software.ie>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6bb5d75e

drivers/tty/serial/8250/8250_lpss.c

+15 −0
Original line number Diff line number Diff line
@@ -151,6 +151,20 @@ 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);

	int ret;



	ret = pci_alloc_irq_vectors(pdev, 1, 1, 0);

	if (ret < 0)

		return ret;



	port->irq = pci_irq_vector(pdev, 0);



	return 0;

}



static bool lpss8250_dma_filter(struct dma_chan *chan, void *param)

{

	struct dw_dma_slave *dws = param;
@@ -261,6 +275,7 @@ 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 }