diff options
| author | Heikki Krogerus <heikki.krogerus@linux.intel.com> | 2016-08-23 11:33:28 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-09-01 00:25:21 +0200 |
| commit | 20a875e2e86e73d13ec256781a7d55a7885868ec (patch) | |
| tree | 0f63df822fb3747325f25ecee6efe1ce8181e188 | |
| parent | a5565cf238daa6b1d5a260d844f857176d280886 (diff) | |
| download | linux-20a875e2e86e73d13ec256781a7d55a7885868ec.tar.bz2 | |
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.c | 15 |
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 */ |