dm: serial: Introduce ->getinfo() callback
New callback will give a necessary information to fill up ACPI SPCR table,
for example. Maybe used later for other purposes.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Change ADR_SPACE_SYSTEM_IO to SERIAL_ADDRESS_SPACE_IO to fix build error:
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/common.h b/include/common.h
index 5747836..20c99da 100644
--- a/include/common.h
+++ b/include/common.h
@@ -357,6 +357,8 @@
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);
@@ -366,6 +368,7 @@
int serial_tstc (void);
int serial_getconfig(uint *config);
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 de21514..c1a9fee 100644
--- a/include/serial.h
+++ b/include/serial.h
@@ -118,6 +118,39 @@
SERIAL_8_BITS << SERIAL_BITS_SHIFT | \
SERIAL_ONE_STOP << SERIAL_STOP_SHIFT)
+enum serial_chip_type {
+ SERIAL_CHIP_UNKNOWN = -1,
+ SERIAL_CHIP_16550_COMPATIBLE,
+};
+
+enum adr_space_type {
+ SERIAL_ADDRESS_SPACE_MEMORY = 0,
+ SERIAL_ADDRESS_SPACE_IO,
+};
+
+/**
+ * struct serial_device_info - structure to hold serial device info
+ *
+ * @type: type of the UART chip
+ * @addr_space: address space to access the registers
+ * @addr: physical address of the registers
+ * @reg_width: size (in bytes) of the IO accesses to the registers
+ * @reg_offset: offset to apply to the @addr from the start of the registers
+ * @reg_shift: quantity to shift the register offsets by
+ * @baudrate: baud rate
+ */
+struct serial_device_info {
+ enum serial_chip_type type;
+ enum adr_space_type addr_space;
+ ulong addr;
+ u8 reg_width;
+ u8 reg_offset;
+ u8 reg_shift;
+ unsigned int baudrate;
+};
+
+#define SERIAL_DEFAULT_ADDRESS 0xBADACCE5
+
/**
* struct struct dm_serial_ops - Driver model serial operations
*
@@ -219,6 +252,13 @@
* @return 0 if OK, -ve on error
*/
int (*setconfig)(struct udevice *dev, uint serial_config);
+ /**
+ * getinfo() - Get serial device information
+ *
+ * @dev: Device pointer
+ * @info: struct serial_device_info to fill
+ */
+ int (*getinfo)(struct udevice *dev, struct serial_device_info *info);
};
/**