diff options
| author | Chaitanya Bandi <bandik@nvidia.com> | 2013-08-26 16:52:28 +0530 |
|---|---|---|
| committer | Riham Haidar <rhaidar@nvidia.com> | 2013-11-15 14:18:33 -0800 |
| commit | 60b8af52417eb174a1373addedf8fffa87a215ad (patch) | |
| tree | 124a12f33decaa964bba12a33ff7378a2e89e5cd | |
| parent | da8bab0a5be5d77a5cc9618ba0a17a720b004950 (diff) | |
i2c: tegra: Add debug prints for i2c timed out case
Added debug prints for i2c timed out case to
help debug.
Change-Id: Ib0696b8237b90cd511ac224a476dede8fae60ceb
Signed-off-by: Chaitanya Bandi <bandik@nvidia.com>
Reviewed-on: http://git-master/r/266050
(cherry picked from commit 3758f5013e3b9049bb0c6c8e58a60f017a825b28)
Reviewed-on: http://git-master/r/330873
GVS: Gerrit_Virtual_Submit
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Tested-by: Sang-Hun Lee <sanlee@nvidia.com>
| -rw-r--r-- | drivers/i2c/busses/i2c-tegra.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 8a70a60751bc..dded772afabe 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -880,6 +880,27 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_bus *i2c_bus, ret = wait_for_completion_timeout(&i2c_dev->msg_complete, TEGRA_I2C_TIMEOUT); + if (ret == 0) { + + dev_err(i2c_dev->dev, "--- register dump for debugging ----\n"); + dev_err(i2c_dev->dev, "I2C_CNFG - 0x%x\n", i2c_readl(i2c_dev, I2C_CNFG)); + dev_err(i2c_dev->dev, "I2C_PACKET_TRANSFER_STATUS - 0x%x\n", i2c_readl(i2c_dev, I2C_PACKET_TRANSFER_STATUS)); + dev_err(i2c_dev->dev, "I2C_FIFO_CONTROL - 0x%x\n", i2c_readl(i2c_dev, I2C_FIFO_CONTROL)); + dev_err(i2c_dev->dev, "I2C_FIFO_STATUS - 0x%x\n", i2c_readl(i2c_dev, I2C_FIFO_STATUS)); + dev_err(i2c_dev->dev, "I2C_INT_MASK - 0x%x\n", i2c_readl(i2c_dev, I2C_INT_MASK)); + dev_err(i2c_dev->dev, "I2C_INT_STATUS - 0x%x\n", i2c_readl(i2c_dev, I2C_INT_STATUS)); + + dev_err(i2c_dev->dev, "msg->len - %d\n", msg->len); + dev_err(i2c_dev->dev, "is_msg_write - %d\n", !(msg->flags & I2C_M_RD)); + if (next_msg != NULL) { + dev_err(i2c_dev->dev, "next_msg->len - %d\n", next_msg->len); + dev_err(i2c_dev->dev, "is_next_msg_write - %d\n", !(next_msg->flags & I2C_M_RD)); + } + dev_err(i2c_dev->dev, "buf_remaining - %d\n", i2c_dev->msg_buf_remaining); + + + } + tegra_i2c_mask_irq(i2c_dev, int_mask); if (i2c_dev->is_dvc) |