From: Shardar Shariff Md <[email protected]> Assign controller id with adapter number as it (cont_id) is passed through DT(through alias). Mask with controller id mask to avoid overflow other fields when single device is present and id is -1.
Signed-off-by: Shardar Shariff Md <[email protected]> Signed-off-by: Krishna Yarlagadda <[email protected]> --- drivers/i2c/busses/i2c-tegra.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index c6c870c..a841d6c 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -83,6 +83,7 @@ #define PACKET_HEADER0_CONT_ID GENMASK(15, 12) #define PACKET_HEADER0_PROTOCOL GENMASK(7, 4) #define PACKET_HEADER0_PROTOCOL_I2C 1 +#define PACKET_HEADER0_CONT_ID_MASK 0xF #define I2C_HEADER_CONT_ON_NAK BIT(21) #define I2C_HEADER_READ BIT(19) @@ -1669,7 +1670,6 @@ static int tegra_i2c_probe(struct platform_device *pdev) i2c_dev->adapter.retries = 1; i2c_dev->adapter.timeout = 6 * HZ; i2c_dev->irq = irq; - i2c_dev->cont_id = pdev->id; i2c_dev->dev = &pdev->dev; i2c_dev->rst = devm_reset_control_get_exclusive(&pdev->dev, "i2c"); @@ -1807,6 +1807,7 @@ static int tegra_i2c_probe(struct platform_device *pdev) if (ret) goto release_dma; + i2c_dev->cont_id = i2c_dev->adapter.nr & PACKET_HEADER0_CONT_ID_MASK; pm_runtime_put(&pdev->dev); return 0; -- 2.7.4
