i2c: tegra: fix repeated start handling
A repeated start should be used for all but the last msg in an xfer. The NOSTART flag is for skipping the START frame (addr/rw) Signed-off-by: Erik Gilling <konkers@android.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Родитель
cb63c62d8e
Коммит
2078cf3b22
|
@ -451,12 +451,12 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
|
|||
|
||||
packet_header = msg->addr << I2C_HEADER_SLAVE_ADDR_SHIFT;
|
||||
packet_header |= I2C_HEADER_IE_ENABLE;
|
||||
if (!stop)
|
||||
packet_header |= I2C_HEADER_REPEAT_START;
|
||||
if (msg->flags & I2C_M_TEN)
|
||||
packet_header |= I2C_HEADER_10BIT_ADDR;
|
||||
if (msg->flags & I2C_M_IGNORE_NAK)
|
||||
packet_header |= I2C_HEADER_CONT_ON_NAK;
|
||||
if (msg->flags & I2C_M_NOSTART)
|
||||
packet_header |= I2C_HEADER_REPEAT_START;
|
||||
if (msg->flags & I2C_M_RD)
|
||||
packet_header |= I2C_HEADER_READ;
|
||||
i2c_writel(i2c_dev, packet_header, I2C_TX_FIFO);
|
||||
|
|
Загрузка…
Ссылка в новой задаче