TBD
Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
---
drivers/serial/ns16550.c | 14 ++++++++++++++
drivers/serial/serial-uclass.c | 21 +++++++++++++++++++++
include/common.h | 3 +++
include/serial.h | 14 ++++++++++++++
4 files changed, 52 insertions(+)
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index f9041aa626..a996446936 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -334,6 +334,19 @@ static int ns16550_serial_setbrg(struct udevice *dev, int
baudrate)
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->addr_space = 0;
+ info->reg_width = 8;
+ info->reg_shift = plat->reg_shift;
+ info->reg_offset = plat->reg_offset;
+ info->addr = plat->base;
+ return 0;
+}
+
int ns16550_serial_probe(struct udevice *dev)
{
struct NS16550 *const com_port = dev_get_priv(dev);
@@ -440,6 +453,7 @@ const struct dm_serial_ops ns16550_serial_ops = {
.pending = ns16550_serial_pending,
.getc = ns16550_serial_getc,
.setbrg = ns16550_serial_setbrg,
+ .getinfo = ns16550_serial_getinfo,
};
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c
index ffdcae0931..4778302e8f 100644
--- a/drivers/serial/serial-uclass.c
+++ b/drivers/serial/serial-uclass.c
@@ -304,6 +304,25 @@ int serial_setconfig(uint config)
return 0;
}
+int serial_getinfo(struct serial_device_info *info)
+{
+ struct dm_serial_ops *ops;
+
+ if (!gd->cur_serial_dev)
+ return -ENODEV;
+
+ if (!info)
+ return -EINVAL;
+
+ info->baudrate = gd->baudrate;
+
+ ops = serial_get_ops(gd->cur_serial_dev);
+ if (ops->getinfo)
+ return ops->getinfo(gd->cur_serial_dev, info);
+
+ return -EINVAL;
+}
+
void serial_stdio_init(void)
{
}
@@ -421,6 +440,8 @@ static int serial_post_probe(struct udevice *dev)
if (ops->loop)
ops->loop += gd->reloc_off
#endif
+ if (ops->getinfo)
+ ops->getinfo += gd->reloc_off;
#endif
/* Set the baud rate */
if (ops->setbrg) {
diff --git a/include/common.h b/include/common.h
index 83b3bdc58d..0479f3eac1 100644
--- a/include/common.h
+++ b/include/common.h
@@ -349,6 +349,8 @@ void smp_set_core_boot_addr(unsigned long addr, int corenr);
void smp_kick_all_cpus(void);
/* $(CPU)/serial.c */
+struct serial_device_info;
+
int serial_init (void);
void serial_setbrg (void);
void serial_putc (const char);
@@ -357,6 +359,7 @@ void serial_puts (const char *);
int serial_getc (void);
int serial_tstc (void);
int serial_setconfig(uint config);
+int serial_getinfo(struct serial_device_info *info);
/* $(CPU)/speed.c */
int get_clocks (void);
diff --git a/include/serial.h b/include/serial.h
index 020cd392e8..c73477b079 100644
--- a/include/serial.h
+++ b/include/serial.h
@@ -111,6 +111,16 @@ enum serial_stop {
SERIAL_8_BITS << SERIAL_BITS_SHIFT | \
SERIAL_ONE_STOP << SERIAL_STOP_SHIFT
+/* REVISIT: ACPI GAS specification implied */
+struct serial_device_info {
+ unsigned int baudrate;
+ u8 addr_space; /* 0 - MMIO, 1 - IO */
+ u8 reg_width;
+ u8 reg_offset;
+ u8 reg_shift;
+ u64 addr;
+};
+
/**
* struct struct dm_serial_ops - Driver model serial operations
*
@@ -201,6 +211,10 @@ struct dm_serial_ops {
* @return 0 if OK, -ve on error
*/
int (*setconfig)(struct udevice *dev, uint serial_config);
+ /**
+ * getinfo() - Get serial device information
+ */
+ int (*getinfo)(struct udevice *dev, struct serial_device_info *info);
};
/**
--
2.18.0
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