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

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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>
This commit is contained in:
Simon Glass 2015-05-16 15:01:41 -06:00
parent b2016133ed
commit a2879764ba
2 changed files with 27 additions and 0 deletions
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21
drivers/i2c/i2c-uclass-compat.c
View file

@ -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);
}

6
include/i2c.h
View file

@ -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
/*