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misc: tegra-cec: dump read/write buffer for debug

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Dump read/write buffer with dev_dbg for debug.

TDS-2199

Change-Id: I1fa3dec9e2ccd78023c464085fd2f6e3f49a87f2
Signed-off-by: Chun Xu <chunx@nvidia.com>
Reviewed-on: http://git-master/r/1485394
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Prafull Suryawanshi <prafulls@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Spencer Sutterlin <ssutterlin@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
This commit is contained in:
Chun Xu
2017-05-19 11:09:52 +08:00
committed by Prafull Suryawanshi
parent f79ab92d84
commit 74524fa09b
1 changed files with 8 additions and 5 deletions
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13
drivers/misc/tegra-cec/tegra_cec.c
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@@ -173,9 +173,11 @@ static ssize_t tegra_cec_write(struct file *file, const char __user *buf,
mutex_unlock(&cec->tx_lock); mutex_unlock(&cec->tx_lock);
if (ret) if (ret)
return ret; return ret;
else else {
dev_dbg(cec->dev, "%s: %*phC", __func__, (int)count, tx_buf);
return count; return count;
} }
}
static ssize_t tegra_cec_read(struct file *file, char __user *buffer, static ssize_t tegra_cec_read(struct file *file, char __user *buffer,
size_t count, loff_t *ppos) size_t count, loff_t *ppos)
@@ -201,6 +203,8 @@ static ssize_t tegra_cec_read(struct file *file, char __user *buffer,
if (copy_to_user(buffer, &(cec->rx_buffer), count)) if (copy_to_user(buffer, &(cec->rx_buffer), count))
return -EFAULT; return -EFAULT;
dev_dbg(cec->dev, "%s: %*phC", __func__, (int)count,
&(cec->rx_buffer));
cec->rx_buffer = 0x0; cec->rx_buffer = 0x0;
cec->rx_wake = 0; cec->rx_wake = 0;
return count; return count;
@@ -231,7 +235,7 @@ static irqreturn_t tegra_cec_irq_handler(int irq, void *data)
goto out; goto out;
if (status & TEGRA_CEC_INT_STAT_TX_REGISTER_UNDERRUN) { if (status & TEGRA_CEC_INT_STAT_TX_REGISTER_UNDERRUN) {
dev_err(dev, "tegra_cec: TX underrun, interrupt timing issue!\n"); dev_err(dev, "TX underrun, interrupt timing issue!\n");
tegra_cec_error_recovery(cec); tegra_cec_error_recovery(cec);
writel(mask & ~TEGRA_CEC_INT_MASK_TX_REGISTER_EMPTY, writel(mask & ~TEGRA_CEC_INT_MASK_TX_REGISTER_EMPTY,
@@ -271,7 +275,7 @@ static irqreturn_t tegra_cec_irq_handler(int irq, void *data)
goto out; goto out;
} else if (status & TEGRA_CEC_INT_STAT_TX_FRAME_OR_BLOCK_NAKD) } else if (status & TEGRA_CEC_INT_STAT_TX_FRAME_OR_BLOCK_NAKD)
dev_warn(dev, "tegra_cec: TX NAKed on the fly!\n"); dev_warn(dev, "TX NAKed on the fly!\n");
if (status & TEGRA_CEC_INT_STAT_TX_REGISTER_EMPTY) { if (status & TEGRA_CEC_INT_STAT_TX_REGISTER_EMPTY) {
if (cec->tx_buf_cur == cec->tx_buf_cnt) if (cec->tx_buf_cur == cec->tx_buf_cnt)
@@ -492,8 +496,7 @@ static ssize_t cec_logical_addr_store(struct device *dev,
if (ret) if (ret)
return ret; return ret;
dev_info(dev, "set logical address: 0x%x\n", (u32)addr);
dev_dbg(dev, "tegra_cec: set logical address: 0x%x\n", (u32)addr);
cec->logical_addr = addr; cec->logical_addr = addr;
state = readl(cec->cec_base + TEGRA_CEC_HW_CONTROL); state = readl(cec->cec_base + TEGRA_CEC_HW_CONTROL);
state &= ~TEGRA_CEC_HWCTRL_RX_LADDR_MASK; state &= ~TEGRA_CEC_HWCTRL_RX_LADDR_MASK;