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serial: ns16550: Provide ->getinfo() implementation 

New callback will supply necessary information, for example,
to ACPI SPCR table.

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 23:52:36 +02:00 committed by Simon Glass
parent 4e7207791c
commit 50bf7d03c2
1 changed files with 21 additions and 1 deletions
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22
drivers/serial/ns16550.c
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@ -372,6 +372,25 @@ static int ns16550_serial_setconfig(struct udevice *dev, uint serial_config)
return 0;
}
static int ns16550_serial_getinfo(struct udevice *dev,
struct serial_device_info *info)
{
struct NS16550 *const com_port = dev_get_priv(dev);
struct ns16550_platdata *plat = com_port->plat;
info->type = SERIAL_CHIP_16550_COMPATIBLE;
#ifdef CONFIG_SYS_NS16550_PORT_MAPPED
info->addr_space = SERIAL_ADDRESS_SPACE_IO;
#else
info->addr_space = SERIAL_ADDRESS_SPACE_MEMORY;
#endif
info->addr = plat->base;
info->reg_width = plat->reg_width;
info->reg_shift = plat->reg_shift;
info->reg_offset = plat->reg_offset;
return 0;
}
int ns16550_serial_probe(struct udevice *dev)
{
struct NS16550 *const com_port = dev_get_priv(dev);
@ -479,7 +498,8 @@ const struct dm_serial_ops ns16550_serial_ops = {
.pending = ns16550_serial_pending,
.getc = ns16550_serial_getc,
.setbrg = ns16550_serial_setbrg,
.setconfig = ns16550_serial_setconfig
.setconfig = ns16550_serial_setconfig,
.getinfo = ns16550_serial_getinfo,
};
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)