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authorHeikki Krogerus <heikki.krogerus@linux.intel.com>2016-08-23 10:33:28 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-09-01 00:25:21 +0200
commit20a875e2e86e73d13ec256781a7d55a7885868ec (patch)
tree0f63df822fb3747325f25ecee6efe1ce8181e188
parentACPI / LPSS: Provide build-in properties of the UART (diff)
downloadlinux-20a875e2e86e73d13ec256781a7d55a7885868ec.tar.xz
linux-20a875e2e86e73d13ec256781a7d55a7885868ec.zip
serial: 8250_dw: Add quirk for APM X-Gene SoC
The APM X-Gene SoC UART is the only board that still needs the hard-coded values, so handle it separately in dw8250_quirks(). The other ACPI platforms are able to provide the values with device properties. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-rw-r--r--drivers/tty/serial/8250/8250_dw.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index e19969614203..5c0c123565ad 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -298,12 +298,17 @@ static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data)
p->serial_out = dw8250_serial_out32be;
}
} else if (has_acpi_companion(p->dev)) {
- p->iotype = UPIO_MEM32;
- p->regshift = 2;
- p->serial_in = dw8250_serial_in32;
+ const struct acpi_device_id *id;
+
+ id = acpi_match_device(p->dev->driver->acpi_match_table,
+ p->dev);
+ if (id && !strcmp(id->id, "APMC0D08")) {
+ p->iotype = UPIO_MEM32;
+ p->regshift = 2;
+ p->serial_in = dw8250_serial_in32;
+ data->uart_16550_compatible = true;
+ }
p->set_termios = dw8250_set_termios;
- /* So far none of there implement the Busy Functionality */
- data->uart_16550_compatible = true;
}
/* Platforms with iDMA */