diff options
| author | Feng Kan <fkan@apm.com> | 2014-12-05 17:45:57 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-09 14:16:27 -0800 |
| commit | 5e1aeea52f6a0763e79473b1767401fda88eb7e1 (patch) | |
| tree | 4fd8bd78857d672ad6bd687f5a12536a85904019 | |
| parent | 9bdd6369aa64fade997c6f11325f7c7b60ec3f6a (diff) | |
| download | op-kernel-dev-5e1aeea52f6a0763e79473b1767401fda88eb7e1.zip op-kernel-dev-5e1aeea52f6a0763e79473b1767401fda88eb7e1.tar.gz | |
serial: 8250: add support for ACPI-probed serial port for X-Gene platform
Enable APM X-Gene SoC serial port functionality when using ACPI table to
initialize serial port.
Signed-off-by: Feng Kan <fkan@apm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/8250/8250_dw.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 555de07..e601162 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -351,10 +351,20 @@ static int dw8250_probe_of(struct uart_port *p, static int dw8250_probe_acpi(struct uart_8250_port *up, struct dw8250_data *data) { + const struct acpi_device_id *id; struct uart_port *p = &up->port; dw8250_setup_port(up); + id = acpi_match_device(p->dev->driver->acpi_match_table, p->dev); + if (!id) + return -ENODEV; + + if (!p->uartclk) + if (device_property_read_u32(p->dev, "clock-frequency", + &p->uartclk)) + return -EINVAL; + p->iotype = UPIO_MEM32; p->serial_in = dw8250_serial_in32; p->serial_out = dw8250_serial_out32; @@ -577,6 +587,7 @@ static const struct acpi_device_id dw8250_acpi_match[] = { { "INT3435", 0 }, { "80860F0A", 0 }, { "8086228A", 0 }, + { "APMC0D08", 0}, { }, }; MODULE_DEVICE_TABLE(acpi, dw8250_acpi_match); |
