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video: exynos_dp: Change aux transaction failures 

This patch adds the function name to aux transaction failure messages
so we can tell which transaction is failing. It also changes the level
of Aux Transaction fail messages from error to debug. We retry the
transactions a few times and will report errors if warranted outside of
this function.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This commit is contained in:
Sean Paul 2012-08-07 20:54:15 -07:00 коммит произвёл Florian Tobias Schandinat
Родитель 11bce6459f
Коммит 8fefbb7519
1 изменённых файлов: 14 добавлений и 7 удалений
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21
drivers/video/exynos/exynos_dp_reg.c
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@ -479,7 +479,8 @@ int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
if (retval == 0) if (retval == 0)
break; break;
else else
dev_err(dp->dev, "Aux Transaction fail!\n"); dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
__func__);
} }
return retval; return retval;
@ -519,7 +520,8 @@ int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
if (retval == 0) if (retval == 0)
break; break;
else else
dev_err(dp->dev, "Aux Transaction fail!\n"); dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
__func__);
} }
/* Read data buffer */ /* Read data buffer */
@ -583,7 +585,8 @@ int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
if (retval == 0) if (retval == 0)
break; break;
else else
dev_err(dp->dev, "Aux Transaction fail!\n"); dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
__func__);
} }
start_offset += cur_data_count; start_offset += cur_data_count;
@ -640,7 +643,8 @@ int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
if (retval == 0) if (retval == 0)
break; break;
else else
dev_err(dp->dev, "Aux Transaction fail!\n"); dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
__func__);
} }
for (cur_data_idx = 0; cur_data_idx < cur_data_count; for (cur_data_idx = 0; cur_data_idx < cur_data_count;
@ -685,7 +689,7 @@ int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
/* Start AUX transaction */ /* Start AUX transaction */
retval = exynos_dp_start_aux_transaction(dp); retval = exynos_dp_start_aux_transaction(dp);
if (retval != 0) if (retval != 0)
dev_err(dp->dev, "Aux Transaction fail!\n"); dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
return retval; return retval;
} }
@ -725,7 +729,8 @@ int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
if (retval == 0) if (retval == 0)
break; break;
else else
dev_err(dp->dev, "Aux Transaction fail!\n"); dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
__func__);
} }
/* Read data */ /* Read data */
@ -785,7 +790,9 @@ int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
if (retval == 0) if (retval == 0)
break; break;
else else
dev_err(dp->dev, "Aux Transaction fail!\n"); dev_dbg(dp->dev,
"%s: Aux Transaction fail!\n",
__func__);
} }
/* Check if Rx sends defer */ /* Check if Rx sends defer */
reg = readl(dp->reg_base + EXYNOS_DP_AUX_RX_COMM); reg = readl(dp->reg_base + EXYNOS_DP_AUX_RX_COMM);