diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2018-11-20 23:52:32 +0200 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-12-05 06:06:44 -0700 |
| commit | ac7f5db9dc690901d99fe0afbcb3d4241c3cab8e (patch) | |
| tree | ac1c22f82a9aa1b481142490623ad1aed5feb555 /include | |
| parent | 4f86a724e82c0b74d9ffb7b65f8ae4b011dd0b03 (diff) | |
dm: serial: Add ->getconfig() callback
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/common.h | 1 | ||||
| -rw-r--r-- | include/serial.h | 26 |
2 files changed, 24 insertions, 3 deletions
diff --git a/include/common.h b/include/common.h index a8e879e1b9a..57478365c7c 100644 --- a/include/common.h +++ b/include/common.h @@ -364,6 +364,7 @@ void serial_putc_raw(const char); void serial_puts (const char *); int serial_getc (void); int serial_tstc (void); +int serial_getconfig(uint *config); int serial_setconfig(uint config); /* $(CPU)/speed.c */ diff --git a/include/serial.h b/include/serial.h index 9133d07fd51..de21514c0c0 100644 --- a/include/serial.h +++ b/include/serial.h @@ -75,6 +75,8 @@ enum serial_par { #define SERIAL_PAR_SHIFT 0 #define SERIAL_PAR_MASK (0x03 << SERIAL_PAR_SHIFT) +#define SERIAL_SET_PARITY(parity) \ + ((parity << SERIAL_PAR_SHIFT) & SERIAL_PAR_MASK) #define SERIAL_GET_PARITY(config) \ ((config & SERIAL_PAR_MASK) >> SERIAL_PAR_SHIFT) @@ -87,6 +89,8 @@ enum serial_bits { #define SERIAL_BITS_SHIFT 2 #define SERIAL_BITS_MASK (0x3 << SERIAL_BITS_SHIFT) +#define SERIAL_SET_BITS(bits) \ + ((bits << SERIAL_BITS_SHIFT) & SERIAL_BITS_MASK) #define SERIAL_GET_BITS(config) \ ((config & SERIAL_BITS_MASK) >> SERIAL_BITS_SHIFT) @@ -99,6 +103,8 @@ enum serial_stop { #define SERIAL_STOP_SHIFT 4 #define SERIAL_STOP_MASK (0x3 << SERIAL_STOP_SHIFT) +#define SERIAL_SET_STOP(stop) \ + ((stop << SERIAL_STOP_SHIFT) & SERIAL_STOP_MASK) #define SERIAL_GET_STOP(config) \ ((config & SERIAL_STOP_MASK) >> SERIAL_STOP_SHIFT) @@ -107,9 +113,10 @@ enum serial_stop { bits << SERIAL_BITS_SHIFT | \ stop << SERIAL_STOP_SHIFT) -#define SERIAL_DEFAULT_CONFIG SERIAL_PAR_NONE << SERIAL_PAR_SHIFT | \ - SERIAL_8_BITS << SERIAL_BITS_SHIFT | \ - SERIAL_ONE_STOP << SERIAL_STOP_SHIFT +#define SERIAL_DEFAULT_CONFIG \ + (SERIAL_PAR_NONE << SERIAL_PAR_SHIFT | \ + SERIAL_8_BITS << SERIAL_BITS_SHIFT | \ + SERIAL_ONE_STOP << SERIAL_STOP_SHIFT) /** * struct struct dm_serial_ops - Driver model serial operations @@ -189,6 +196,19 @@ struct dm_serial_ops { #endif /** + * getconfig() - Get the uart configuration + * (parity, 5/6/7/8 bits word length, stop bits) + * + * Get a current config for this device. + * + * @dev: Device pointer + * @parity: parity to use + * @bits: bits number to use + * @stop: stop bits number to use + * @return 0 if OK, -ve on error + */ + int (*getconfig)(struct udevice *dev, uint *serial_config); + /** * setconfig() - Set up the uart configuration * (parity, 5/6/7/8 bits word length, stop bits) * |