X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=include%2Fserial.h;h=c1368c68b6473bee38e19d766d08324185b3fa47;hb=eef72440dbe83b7f1875507505911022e799e709;hp=9cd6f107032c02f1c9421d090f1cbb823b02ed2d;hpb=481ea2e39dacf227bc5d8a244352d03dfb9c0ac9;p=oweals%2Fu-boot.git

diff --git a/include/serial.h b/include/serial.h
index 9cd6f10703..c1368c68b6 100644
--- a/include/serial.h
+++ b/include/serial.h
@@ -73,6 +73,84 @@ enum serial_par {
 	SERIAL_PAR_EVEN
 };
 
+#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)
+
+enum serial_bits {
+	SERIAL_5_BITS,
+	SERIAL_6_BITS,
+	SERIAL_7_BITS,
+	SERIAL_8_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)
+
+enum serial_stop {
+	SERIAL_HALF_STOP,	/* 0.5 stop bit */
+	SERIAL_ONE_STOP,	/*   1 stop bit */
+	SERIAL_ONE_HALF_STOP,	/* 1.5 stop bit */
+	SERIAL_TWO_STOP		/*   2 stop bit */
+};
+
+#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)
+
+#define SERIAL_CONFIG(par, bits, stop) \
+		     (par << SERIAL_PAR_SHIFT | \
+		      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)
+
+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
  *
@@ -149,16 +227,37 @@ struct dm_serial_ops {
 	 */
 	int (*loop)(struct udevice *dev, int on);
 #endif
+
 	/**
-	 * setparity() - Set up the parity
+	 * getconfig() - Get the uart configuration
+	 * (parity, 5/6/7/8 bits word length, stop bits)
 	 *
-	 * Set up a new parity for this device.
+	 * Get a current config for this device.
 	 *
 	 * @dev: Device pointer
-	 * @parity: parity to use
+	 * @serial_config: Returns config information (see SERIAL_... above)
 	 * @return 0 if OK, -ve on error
 	 */
-	int (*setparity)(struct udevice *dev, enum serial_par parity);
+	int (*getconfig)(struct udevice *dev, uint *serial_config);
+	/**
+	 * setconfig() - Set up the uart configuration
+	 * (parity, 5/6/7/8 bits word length, stop bits)
+	 *
+	 * Set up a new config for this device.
+	 *
+	 * @dev: Device pointer
+	 * @serial_config: number of bits, parity and number of stopbits to use
+	 * @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
+	 * @return 0 if OK, -ve on error
+	 */
+	int (*getinfo)(struct udevice *dev, struct serial_device_info *info);
 };
 
 /**
@@ -181,10 +280,42 @@ struct serial_dev_priv {
 /* Access the serial operations for a device */
 #define serial_get_ops(dev)	((struct dm_serial_ops *)(dev)->driver->ops)
 
+/**
+ * serial_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
+ * @serial_config: Returns config information (see SERIAL_... above)
+ * @return 0 if OK, -ve on error
+ */
+int serial_getconfig(struct udevice *dev, uint *config);
+
+/**
+ * serial_setconfig() - Set up the uart configuration
+ * (parity, 5/6/7/8 bits word length, stop bits)
+ *
+ * Set up a new config for this device.
+ *
+ * @dev: Device pointer
+ * @serial_config: number of bits, parity and number of stopbits to use
+ * @return 0 if OK, -ve on error
+ */
+int serial_setconfig(struct udevice *dev, uint config);
+
+/**
+ * serial_getinfo() - Get serial device information
+ *
+ * @dev: Device pointer
+ * @info: struct serial_device_info to fill
+ * @return 0 if OK, -ve on error
+ */
+int serial_getinfo(struct udevice *dev, struct serial_device_info *info);
+
 void atmel_serial_initialize(void);
 void mcf_serial_initialize(void);
 void mpc85xx_serial_initialize(void);
-void mpc8xx_serial_initialize(void);
 void mxc_serial_initialize(void);
 void ns16550_serial_initialize(void);
 void pl01x_serial_initialize(void);