| Message ID | 20250213141045.2716943-2-andriy.shevchenko@linux.intel.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | i2c: busses: Introduce and use i2c_10bit_addr_*_from_msg() | expand |
Il 13/02/25 15:07, Andy Shevchenko ha scritto: > There are already a lot of drivers that have been using > i2c_8bit_addr_from_msg() for 7-bit addresses, now it's time > to have the similar for 10-bit addresses. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 997e80649889..e23b373b6b57 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -952,6 +952,20 @@ static inline u8 i2c_8bit_addr_from_msg(const struct i2c_msg *msg) return (msg->addr << 1) | (msg->flags & I2C_M_RD); } +/* + * 10-bit address + * addr_1: 5'b11110 | addr[9:8] | (R/nW) + * addr_2: addr[7:0] + */ +static inline u8 i2c_10bit_addr_hi_from_msg(const struct i2c_msg *msg) +{ + return 0xf0 | ((msg->addr & GENMASK(9, 8)) >> 7) | (msg->flags & I2C_M_RD); +} +static inline u8 i2c_10bit_addr_lo_from_msg(const struct i2c_msg *msg) +{ + return msg->addr & GENMASK(7, 0); +} + u8 *i2c_get_dma_safe_msg_buf(struct i2c_msg *msg, unsigned int threshold); void i2c_put_dma_safe_msg_buf(u8 *buf, struct i2c_msg *msg, bool xferred);
There are already a lot of drivers that have been using i2c_8bit_addr_from_msg() for 7-bit addresses, now it's time to have the similar for 10-bit addresses. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- include/linux/i2c.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+)