dm: i2c: Add compatibility functions for dm_i2c_reg_read/write()

Add the legacy i2c_reg_read/write() functions to the compatibility layer
so that they can be used when CONFIG_DM_I2C_COMPAT is defined.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>

diff --git a/drivers/i2c/i2c-uclass-compat.c b/drivers/i2c/i2c-uclass-compat.c
index 223f238f4bed0cc475743c94931ed25fd2a2427b..5606d1f807f64dead14b8ba65a66cfc4f3852b08 100644 (file)
--- a/drivers/i2c/i2c-uclass-compat.c
+++ b/drivers/i2c/i2c-uclass-compat.c
@@ -106,3 +106,24 @@ void board_i2c_init(const void *blob)
 {
        /* Nothing to do here - the init happens through driver model */
 }
+
+uint8_t i2c_reg_read(uint8_t chip_addr, uint8_t offset)
+{
+       struct udevice *dev;
+       int ret;
+
+       ret = i2c_compat_get_device(chip_addr, 1, &dev);
+       if (ret)
+               return 0xff;
+       return dm_i2c_reg_read(dev, offset);
+}
+
+void i2c_reg_write(uint8_t chip_addr, uint8_t offset, uint8_t val)
+{
+       struct udevice *dev;
+       int ret;
+
+       ret = i2c_compat_get_device(chip_addr, 1, &dev);
+       if (!ret)
+               dm_i2c_reg_write(dev, offset, val);
+}

diff --git a/include/i2c.h b/include/i2c.h
index ddfebc4107f638d68f0d0296d335fd67c9f6120d..9300d97e146b03f406b1b5ea505be2d5886d9325 100644 (file)
--- a/include/i2c.h
+++ b/include/i2c.h
@@ -284,6 +284,12 @@ void i2c_init(int speed, int slaveaddr);
  */
 void board_i2c_init(const void *blob);
 
+/*
+ * Compatibility functions for driver model.
+ */
+uint8_t i2c_reg_read(uint8_t addr, uint8_t reg);
+void i2c_reg_write(uint8_t addr, uint8_t reg, uint8_t val);
+
 #endif
 
 /*