On Tue, 24 Apr 2012 12:49:35 +0530, Laxman Dewangan wrote:
> The slave address of device to be configured in packet
> header as follows:
> 7 bit address: PacketHeader3[7:1]
> 10 bit address: PacketHeader3[9:0]
>
> Fixing the code to make packet header3 properly.
>
> Signed-off-by: Laxman Dewangan <ldewangan@xxxxxxxxxx>
> ---
> drivers/i2c/busses/i2c-tegra.c | 11 +++++++----
> 1 files changed, 7 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
> index 55e5ea6..18067b3 100644
> --- a/drivers/i2c/busses/i2c-tegra.c
> +++ b/drivers/i2c/busses/i2c-tegra.c
> @@ -476,12 +476,15 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
> packet_header = msg->len - 1;
> i2c_writel(i2c_dev, packet_header, I2C_TX_FIFO);
>
> - packet_header = msg->addr << I2C_HEADER_SLAVE_ADDR_SHIFT;
> - packet_header |= I2C_HEADER_IE_ENABLE;
> + packet_header = I2C_HEADER_IE_ENABLE;
> if (!stop)
> packet_header |= I2C_HEADER_REPEAT_START;
> - if (msg->flags & I2C_M_TEN)
> + if (msg->flags & I2C_M_TEN) {
> + packet_header |= msg->addr;
> packet_header |= I2C_HEADER_10BIT_ADDR;
> + } else {
> + packet_header |= msg->addr << I2C_HEADER_SLAVE_ADDR_SHIFT;
> + }
> if (msg->flags & I2C_M_IGNORE_NAK)
> packet_header |= I2C_HEADER_CONT_ON_NAK;
> if (msg->flags & I2C_M_RD)
> @@ -557,7 +560,7 @@ static int tegra_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[],
>
> static u32 tegra_i2c_func(struct i2c_adapter *adap)
> {
> - return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
> + return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR;
> }
>
> static const struct i2c_algorithm tegra_i2c_algo = {
Looks good.
Acked-by: Jean Delvare <khali@xxxxxxxxxxxx>
Not that 10-bit address devices are immensely popular though...
--
Jean Delvare
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