diff options
Diffstat (limited to 'src/drivers/xpowers/axp209/axp209.c')
| -rw-r--r-- | src/drivers/xpowers/axp209/axp209.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/drivers/xpowers/axp209/axp209.c b/src/drivers/xpowers/axp209/axp209.c index ae2e3da40e..f36c506a2d 100644 --- a/src/drivers/xpowers/axp209/axp209.c +++ b/src/drivers/xpowers/axp209/axp209.c @@ -43,16 +43,22 @@ enum registers { * is no limitation on the AXP209 as to how many registers we may read or write * in one transaction. * These return the number of bytes read/written, or an error code. In this - * case, they return 1 on success, or an error code otherwise. + * case, they return 1 on success, or an error code otherwise. This is done to + * work with I²C drivers that return either 0 on success or the number of bytes + * actually transferred. */ static int axp209_read(u8 bus, u8 reg, u8 *val) { - return i2c_readb(bus, AXP209_I2C_ADDR, reg, val); + if (i2c_readb(bus, AXP209_I2C_ADDR, reg, val) < 0) + return CB_ERR; + return 1; } static int axp209_write(u8 bus, u8 reg, u8 val) { - return i2c_writeb(bus, AXP209_I2C_ADDR, reg, val); + if (i2c_writeb(bus, AXP209_I2C_ADDR, reg, val) < 0) + return CB_ERR; + return 1; } /** |