linux-kernel - [PATCH v10 10/11] serial: 8250_lpss: enable MSI for Intel Quark

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Message-Id: <1471017716-44893-11-git-send-email-andriy.shevchenko@linux.intel.com>
Date:	Fri, 12 Aug 2016 19:01:55 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	Bryan O'Donoghue <pure.logic@...us-software.ie>,
	Peter Hurley <peter@...leysoftware.com>,
	linux-serial@...r.kernel.org, Vinod Koul <vinod.koul@...el.com>,
	linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	ismo.puustinen@...el.com,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v10 10/11] 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: Andy Shevchenko <andriy.shevchenko@...ux.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 cad96ee..5ac291c 100644
--- a/drivers/tty/serial/8250/8250_lpss.c
+++ b/drivers/tty/serial/8250/8250_lpss.c
@@ -151,6 +151,17 @@ 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;
@@ -261,6 +272,7 @@ 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