serial: 8250_pci: add Intel Tangier support
Intel Tangier contains 4 HSUART ports as found on Intel Edison board which are
8250 compatible. The patch adds necessary bits to the driver.
Note that the HSU port0 is currently unavailable and thus not supported.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 0be8dd8..98e5a6d 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -1540,6 +1540,14 @@
serial8250_do_set_termios(p, termios, old);
}
+
+static void intel_mid_set_termios_38_4M(struct uart_port *p,
+ struct ktermios *termios,
+ struct ktermios *old)
+{
+ intel_mid_set_termios(p, termios, old, 38400000);
+}
+
static void intel_mid_set_termios_50M(struct uart_port *p,
struct ktermios *termios,
struct ktermios *old)
@@ -1636,6 +1644,27 @@
return intel_mid_serial_setup(priv, board, port, idx, index, dma_dev);
}
+#define PCI_DEVICE_ID_INTEL_TNG_UART 0x1191
+
+static int tng_serial_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
+ struct uart_8250_port *port, int idx)
+{
+ struct pci_dev *pdev = priv->dev;
+ struct pci_dev *dma_dev;
+ int index = PCI_FUNC(pdev->devfn);
+
+ /* Currently no support for HSU port0 */
+ if (index-- == 0)
+ return -ENODEV;
+
+ dma_dev = pci_get_slot(pdev->bus, PCI_DEVFN(5, 0));
+
+ port->port.set_termios = intel_mid_set_termios_38_4M;
+
+ return intel_mid_serial_setup(priv, board, port, idx, index, dma_dev);
+}
+
static int
pci_omegapci_setup(struct serial_private *priv,
const struct pciserial_board *board,
@@ -2114,6 +2143,13 @@
},
{
.vendor = PCI_VENDOR_ID_INTEL,
+ .device = PCI_DEVICE_ID_INTEL_TNG_UART,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = tng_serial_setup,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_BSW_UART1,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
@@ -2990,6 +3026,7 @@
pbn_ce4100_1_115200,
pbn_byt,
pbn_pnw,
+ pbn_tng,
pbn_qrk,
pbn_omegapci,
pbn_NETMOS9900_2s_115200,
@@ -3761,6 +3798,11 @@
.num_ports = 1,
.base_baud = 115200,
},
+ [pbn_tng] = {
+ .flags = FL_BASE0,
+ .num_ports = 1,
+ .base_baud = 1843200,
+ },
[pbn_qrk] = {
.flags = FL_BASE0,
.num_ports = 1,
@@ -5507,6 +5549,13 @@
pbn_pnw},
/*
+ * Intel Tangier
+ */
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TNG_UART,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_tng},
+
+ /*
* Intel Quark x1000
*/
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_QRK_UART,