dm: i2c: Rename driver model I2C functions to permit compatibility

Add a dm_ prefix to driver model I2C functions so that we can keep the old
ones around.

This is a little unfortunate, but on reflection it is too difficult to
change the API. We can undo this rename when most boards and drivers are
converted to use driver model for I2C.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/i2c.c b/test/dm/i2c.c
index a53e28d..4823b0c 100644
--- a/test/dm/i2c.c
+++ b/test/dm/i2c.c
@@ -35,8 +35,8 @@
 	 * remove the emulation and the slave device.
 	 */
 	ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
-	ut_assertok(i2c_probe(bus, chip, 0, &dev));
-	ut_asserteq(-ENODEV, i2c_probe(bus, no_chip, 0, &dev));
+	ut_assertok(dm_i2c_probe(bus, chip, 0, &dev));
+	ut_asserteq(-ENODEV, dm_i2c_probe(bus, no_chip, 0, &dev));
 	ut_asserteq(-ENODEV, uclass_get_device_by_seq(UCLASS_I2C, 1, &bus));
 
 	return 0;
@@ -50,10 +50,10 @@
 
 	ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
 	ut_assertok(i2c_get_chip(bus, chip, &dev));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(memcmp(buf, "\0\0\0\0\0", sizeof(buf)));
-	ut_assertok(i2c_write(dev, 2, (uint8_t *)"AB", 2));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_write(dev, 2, (uint8_t *)"AB", 2));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(memcmp(buf, "\0\0AB\0", sizeof(buf)));
 
 	return 0;
@@ -68,11 +68,11 @@
 	ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
 	ut_assertok(i2c_get_chip(bus, chip, &dev));
 	ut_assertok(i2c_set_bus_speed(bus, 100000));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(i2c_set_bus_speed(bus, 400000));
 	ut_asserteq(400000, i2c_get_bus_speed(bus));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
-	ut_asserteq(-EINVAL, i2c_write(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
+	ut_asserteq(-EINVAL, dm_i2c_write(dev, 0, buf, 5));
 
 	return 0;
 }
@@ -86,7 +86,7 @@
 	ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
 	ut_assertok(i2c_get_chip(bus, chip, &dev));
 	ut_assertok(i2c_set_chip_offset_len(dev, 1));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 
 	/* This is not supported by the uclass */
 	ut_asserteq(-EINVAL, i2c_set_chip_offset_len(dev, 5));
@@ -100,7 +100,7 @@
 	struct udevice *bus, *dev;
 
 	ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
-	ut_assertok(i2c_probe(bus, SANDBOX_I2C_TEST_ADDR, 0, &dev));
+	ut_assertok(dm_i2c_probe(bus, SANDBOX_I2C_TEST_ADDR, 0, &dev));
 
 	return 0;
 }
@@ -114,7 +114,7 @@
 
 	ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
 	ut_assertok(i2c_get_chip(bus, chip, &dev));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(memcmp(buf, "\0\0\0\0\0", sizeof(buf)));
 
 	/* Tell the EEPROM to only read/write one register at a time */
@@ -123,34 +123,34 @@
 	sandbox_i2c_eeprom_set_test_mode(eeprom, SIE_TEST_MODE_SINGLE_BYTE);
 
 	/* Now we only get the first byte - the rest will be 0xff */
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(memcmp(buf, "\0\xff\xff\xff\xff", sizeof(buf)));
 
 	/* If we do a separate transaction for each byte, it works */
 	ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_RD_ADDRESS));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(memcmp(buf, "\0\0\0\0\0", sizeof(buf)));
 
 	/* This will only write A */
 	ut_assertok(i2c_set_chip_flags(dev, 0));
-	ut_assertok(i2c_write(dev, 2, (uint8_t *)"AB", 2));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_write(dev, 2, (uint8_t *)"AB", 2));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(memcmp(buf, "\0\xff\xff\xff\xff", sizeof(buf)));
 
 	/* Check that the B was ignored */
 	ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_RD_ADDRESS));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(memcmp(buf, "\0\0A\0\0\0", sizeof(buf)));
 
 	/* Now write it again with the new flags, it should work */
 	ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_WR_ADDRESS));
-	ut_assertok(i2c_write(dev, 2, (uint8_t *)"AB", 2));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_write(dev, 2, (uint8_t *)"AB", 2));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(memcmp(buf, "\0\xff\xff\xff\xff", sizeof(buf)));
 
 	ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_WR_ADDRESS |
 						DM_I2C_CHIP_RD_ADDRESS));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(memcmp(buf, "\0\0AB\0\0", sizeof(buf)));
 
 	/* Restore defaults */
@@ -170,42 +170,42 @@
 	ut_assertok(i2c_get_chip_for_busnum(busnum, chip, &dev));
 
 	/* Do a transfer so we can find the emulator */
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(uclass_first_device(UCLASS_I2C_EMUL, &eeprom));
 
 	/* Offset length 0 */
 	sandbox_i2c_eeprom_set_offset_len(eeprom, 0);
 	ut_assertok(i2c_set_chip_offset_len(dev, 0));
-	ut_assertok(i2c_write(dev, 10 /* ignored */, (uint8_t *)"AB", 2));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_write(dev, 10 /* ignored */, (uint8_t *)"AB", 2));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(memcmp(buf, "AB\0\0\0\0", sizeof(buf)));
 
 	/* Offset length 1 */
 	sandbox_i2c_eeprom_set_offset_len(eeprom, 1);
 	ut_assertok(i2c_set_chip_offset_len(dev, 1));
-	ut_assertok(i2c_write(dev, 2, (uint8_t *)"AB", 2));
-	ut_assertok(i2c_read(dev, 0, buf, 5));
+	ut_assertok(dm_i2c_write(dev, 2, (uint8_t *)"AB", 2));
+	ut_assertok(dm_i2c_read(dev, 0, buf, 5));
 	ut_assertok(memcmp(buf, "ABAB\0", sizeof(buf)));
 
 	/* Offset length 2 */
 	sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
 	ut_assertok(i2c_set_chip_offset_len(dev, 2));
-	ut_assertok(i2c_write(dev, 0x210, (uint8_t *)"AB", 2));
-	ut_assertok(i2c_read(dev, 0x210, buf, 5));
+	ut_assertok(dm_i2c_write(dev, 0x210, (uint8_t *)"AB", 2));
+	ut_assertok(dm_i2c_read(dev, 0x210, buf, 5));
 	ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
 
 	/* Offset length 3 */
 	sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
 	ut_assertok(i2c_set_chip_offset_len(dev, 2));
-	ut_assertok(i2c_write(dev, 0x410, (uint8_t *)"AB", 2));
-	ut_assertok(i2c_read(dev, 0x410, buf, 5));
+	ut_assertok(dm_i2c_write(dev, 0x410, (uint8_t *)"AB", 2));
+	ut_assertok(dm_i2c_read(dev, 0x410, buf, 5));
 	ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
 
 	/* Offset length 4 */
 	sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
 	ut_assertok(i2c_set_chip_offset_len(dev, 2));
-	ut_assertok(i2c_write(dev, 0x420, (uint8_t *)"AB", 2));
-	ut_assertok(i2c_read(dev, 0x420, buf, 5));
+	ut_assertok(dm_i2c_write(dev, 0x420, (uint8_t *)"AB", 2));
+	ut_assertok(dm_i2c_read(dev, 0x420, buf, 5));
 	ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
 
 	/* Restore defaults */