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dm: serial: Add ->getconfig() callback

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In some cases it would be good to know the settings, such as parity,
of current serial console. One example might be an ACPI SPCR table
to generate using these parameters.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Andy Shevchenko
2018-11-20 23:52:32 +02:00
committed by Simon Glass
parent 4f86a724e8
commit ac7f5db9dc
5 changed files with 60 additions and 3 deletions
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7
test/dm/serial.c
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@@ -12,6 +12,7 @@
static int dm_test_serial(struct unit_test_state *uts)
{
struct udevice *dev_serial;
uint value_serial;
ut_assertok(uclass_get_device_by_name(UCLASS_SERIAL, "serial",
&dev_serial));
@@ -22,6 +23,12 @@ static int dm_test_serial(struct unit_test_state *uts)
* sandbox_serial driver
*/
ut_assertok(serial_setconfig(SERIAL_DEFAULT_CONFIG));
ut_assertok(serial_getconfig(&value_serial));
ut_assert(value_serial == SERIAL_DEFAULT_CONFIG);
/*
* test with a parameter which is NULL pointer
*/
ut_asserteq(-EINVAL, serial_getconfig(NULL));
/*
* test with a serial config which is not supported by
* sandbox_serial driver: test with wrong parity