diff options
| author | Chaitanya Bandi <bandik@nvidia.com> | 2013-08-26 16:52:28 +0530 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 13:43:58 -0700 |
| commit | 84e5f74cc08eb1718cbba9b6c39724a72d9688d6 (patch) | |
| tree | ba120c5b7321e743a681220f3fc5b3cd361a13e3 /drivers/i2c | |
| parent | f413d96c294e8985964e99405e281fc418ab57c7 (diff) | |
i2c: tegra: Add debug prints for i2c timed out case
Added debug prints for i2c timed out case to
help debug.
Change-Id: I9b8b66acdc80b9bbddbf9d824d7fbd71fa602460
Signed-off-by: Chaitanya Bandi <bandik@nvidia.com>
Signed-off-by: Pradeep Goudagunta <pgoudagunta@nvidia.com>
Reviewed-on: http://git-master/r/266034
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Tested-by: Laxman Dewangan <ldewangan@nvidia.com>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-tegra.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 92a6d94029d0..27d1498b9d40 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -4,7 +4,7 @@ * Copyright (C) 2010 Google, Inc. * Author: Colin Cross <ccross@android.com> * - * Copyright (C) 2010-2013 NVIDIA Corporation + * Copyright (C) 2010-2013 NVIDIA Corporation. All rights reserved. * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and @@ -1026,6 +1026,35 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev, 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) |