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| author | Laxman Dewangan <ldewangan@nvidia.com> | 2012-04-24 12:49:35 +0530 |
|---|---|---|
| committer | Wolfram Sang <w.sang@pengutronix.de> | 2012-05-12 14:28:18 +0200 |
| commit | 353f56b5f3093b6d75e81f523a8b10748a40f278 (patch) | |
| tree | 1121a1e25e2c9c4b8ddb77d3b8b55b02b306152e /drivers/i2c | |
| parent | b4f0b74ea37789eeeabe57b7ccd5808df076c081 (diff) | |
| download | op-kernel-dev-353f56b5f3093b6d75e81f523a8b10748a40f278.zip op-kernel-dev-353f56b5f3093b6d75e81f523a8b10748a40f278.tar.gz | |
i2c: tegra: fix 10bit address configuration
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@nvidia.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | 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 = { |
