X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=include%2Fi2c.h;h=6fd73fae4ccc01c3c1aa5a45023b04dd22e24b37;hb=66312374dca86e77fc9b08f774546e62b6cd1aa7;hp=30d53c8a9df4cb38ca0d97e2c47aa8ea2f231a1c;hpb=f9a4c2da72d04e13b05deecb800f232d2948eb85;p=u-boot

diff --git a/include/i2c.h b/include/i2c.h
index 30d53c8a9d..6fd73fae4c 100644
--- a/include/i2c.h
+++ b/include/i2c.h
@@ -25,22 +25,21 @@
  * enough as to be incompatible for compilation purposes.
  */
 
-#ifdef CONFIG_DM_I2C
-
 enum dm_i2c_chip_flags {
 	DM_I2C_CHIP_10BIT	= 1 << 0, /* Use 10-bit addressing */
 	DM_I2C_CHIP_RD_ADDRESS	= 1 << 1, /* Send address for each read byte */
 	DM_I2C_CHIP_WR_ADDRESS	= 1 << 2, /* Send address for each write byte */
 };
 
+struct udevice;
 /**
  * struct dm_i2c_chip - information about an i2c chip
  *
  * An I2C chip is a device on the I2C bus. It sits at a particular address
  * and normally supports 7-bit or 10-bit addressing.
  *
- * To obtain this structure, use dev_get_parentdata(dev) where dev is the
- * chip to examine.
+ * To obtain this structure, use dev_get_parent_platdata(dev) where dev is
+ * the chip to examine.
  *
  * @chip_addr:	Chip address on bus
  * @offset_len: Length of offset in bytes. A single byte offset can
@@ -65,8 +64,8 @@ struct dm_i2c_chip {
  * bus can operate at different speeds (measured in Hz, typically 100KHz
  * or 400KHz).
  *
- * To obtain this structure, use bus->uclass_priv where bus is the I2C
- * bus udevice.
+ * To obtain this structure, use dev_get_uclass_priv(bus) where bus is the
+ * I2C bus udevice.
  *
  * @speed_hz: Bus speed in hertz (typically 100000)
  */
@@ -125,21 +124,21 @@ int dm_i2c_probe(struct udevice *bus, uint chip_addr, uint chip_flags,
 		 struct udevice **devp);
 
 /**
- * i2c_set_bus_speed() - set the speed of a bus
+ * dm_i2c_set_bus_speed() - set the speed of a bus
  *
  * @bus:	Bus to adjust
  * @speed:	Requested speed in Hz
  * @return 0 if OK, -EINVAL for invalid values
  */
-int i2c_set_bus_speed(struct udevice *bus, unsigned int speed);
+int dm_i2c_set_bus_speed(struct udevice *bus, unsigned int speed);
 
 /**
- * i2c_get_bus_speed() - get the speed of a bus
+ * dm_i2c_get_bus_speed() - get the speed of a bus
  *
  * @bus:	Bus to check
  * @return speed of selected I2C bus in Hz, -ve on error
  */
-int i2c_get_bus_speed(struct udevice *bus);
+int dm_i2c_get_bus_speed(struct udevice *bus);
 
 /**
  * i2c_set_chip_flags() - set flags for a chip
@@ -184,6 +183,80 @@ int i2c_set_chip_offset_len(struct udevice *dev, uint offset_len);
  */
 int i2c_deblock(struct udevice *bus);
 
+#ifdef CONFIG_DM_I2C_COMPAT
+/**
+ * i2c_probe() - Compatibility function for driver model
+ *
+ * Calls dm_i2c_probe() on the current bus
+ */
+int i2c_probe(uint8_t chip_addr);
+
+/**
+ * i2c_read() - Compatibility function for driver model
+ *
+ * Calls dm_i2c_read() with the device corresponding to @chip_addr, and offset
+ * set to @addr. @alen must match the current setting for the device.
+ */
+int i2c_read(uint8_t chip_addr, unsigned int addr, int alen, uint8_t *buffer,
+	     int len);
+
+/**
+ * i2c_write() - Compatibility function for driver model
+ *
+ * Calls dm_i2c_write() with the device corresponding to @chip_addr, and offset
+ * set to @addr. @alen must match the current setting for the device.
+ */
+int i2c_write(uint8_t chip_addr, unsigned int addr, int alen, uint8_t *buffer,
+	      int len);
+
+/**
+ * i2c_get_bus_num_fdt() - Compatibility function for driver model
+ *
+ * @return the bus number associated with the given device tree node
+ */
+int i2c_get_bus_num_fdt(int node);
+
+/**
+ * i2c_get_bus_num() - Compatibility function for driver model
+ *
+ * @return the 'current' bus number
+ */
+unsigned int i2c_get_bus_num(void);
+
+/**
+ * i2c_set_bus_num() - Compatibility function for driver model
+ *
+ * Sets the 'current' bus
+ */
+int i2c_set_bus_num(unsigned int bus);
+
+static inline void I2C_SET_BUS(unsigned int bus)
+{
+	i2c_set_bus_num(bus);
+}
+
+static inline unsigned int I2C_GET_BUS(void)
+{
+	return i2c_get_bus_num();
+}
+
+/**
+ * i2c_init() - Compatibility function for driver model
+ *
+ * This function does nothing.
+ */
+void i2c_init(int speed, int slaveaddr);
+
+/**
+ * board_i2c_init() - Compatibility function for driver model
+ *
+ * @param blob  Device tree blbo
+ * @return the number of I2C bus
+ */
+void board_i2c_init(const void *blob);
+
+#endif
+
 /*
  * Not all of these flags are implemented in the U-Boot API
  */
@@ -267,7 +340,7 @@ struct dm_i2c_ops {
 	 * The bus speed value will be updated by the uclass if this function
 	 * does not return an error. This method is optional - if it is not
 	 * provided then the driver can read the speed from
-	 * bus->uclass_priv->speed_hz
+	 * dev_get_uclass_priv(bus)->speed_hz
 	 *
 	 * @bus:	Bus to adjust
 	 * @speed:	Requested speed in Hz
@@ -281,7 +354,7 @@ struct dm_i2c_ops {
 	 * Normally this can be provided by the uclass, but if you want your
 	 * driver to check the bus speed by looking at the hardware, you can
 	 * implement that here. This method is optional. This method would
-	 * normally be expected to return bus->uclass_priv->speed_hz.
+	 * normally be expected to return dev_get_uclass_priv(bus)->speed_hz.
 	 *
 	 * @bus:	Bus to check
 	 * @return speed of selected I2C bus in Hz, -ve on error
@@ -329,10 +402,12 @@ struct dm_i2c_ops {
  *
  * @bus:	Bus to examine
  * @chip_addr:	Chip address for the new device
+ * @offset_len:	Length of a register offset in bytes (normally 1)
  * @devp:	Returns pointer to new device if found or -ENODEV if not
  *		found
  */
-int i2c_get_chip(struct udevice *bus, uint chip_addr, struct udevice **devp);
+int i2c_get_chip(struct udevice *bus, uint chip_addr, uint offset_len,
+		 struct udevice **devp);
 
 /**
  * i2c_get_chip() - get a device to use to access a chip on a bus number
@@ -342,10 +417,12 @@ int i2c_get_chip(struct udevice *bus, uint chip_addr, struct udevice **devp);
  *
  * @busnum:	Bus number to examine
  * @chip_addr:	Chip address for the new device
+ * @offset_len:	Length of a register offset in bytes (normally 1)
  * @devp:	Returns pointer to new device if found or -ENODEV if not
  *		found
  */
-int i2c_get_chip_for_busnum(int busnum, int chip_addr, struct udevice **devp);
+int i2c_get_chip_for_busnum(int busnum, int chip_addr, uint offset_len,
+			    struct udevice **devp);
 
 /**
  * i2c_chip_ofdata_to_platdata() - Decode standard I2C platform data
@@ -361,8 +438,6 @@ int i2c_get_chip_for_busnum(int busnum, int chip_addr, struct udevice **devp);
 int i2c_chip_ofdata_to_platdata(const void *blob, int node,
 				struct dm_i2c_chip *chip);
 
-#endif
-
 #ifndef CONFIG_DM_I2C
 
 /*