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[media] saa7134-i2c: make debug macros to use pr_fmt()

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Converting debug prints to use pr_foo() is not trivial, as the
result will be a way worse than what's provided here, due to the
pieces of the code that prints the I2C transfers. Those use a
lot pr_cont(), and, depending on using either level 1 or 2,
a different set of macros are selected.

So, let's replace d1printk() and d2printk() macros by i2c_dbg()
and i2c_count() adding a debug level there.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2015-04-30 08:21:14 -03:00
parent c6c62cce32
commit 30693f346e
1 changed files with 27 additions and 27 deletions
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54
drivers/media/pci/saa7134/saa7134-i2c.c
View file

@ -41,8 +41,11 @@ static unsigned int i2c_scan;
module_param(i2c_scan, int, 0444);
MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time");
#define d1printk if (1 == i2c_debug) printk
#define d2printk if (2 == i2c_debug) printk
#define i2c_dbg(level, fmt, arg...) if (i2c_debug == level) \
printk(KERN_DEBUG pr_fmt("i2c: " fmt), ## arg)
#define i2c_cont(level, fmt, arg...) if (i2c_debug == level) \
pr_cont(fmt, ## arg)
#define I2C_WAIT_DELAY 32
#define I2C_WAIT_RETRY 16
@ -90,23 +93,20 @@ static inline enum i2c_status i2c_get_status(struct saa7134_dev *dev)
enum i2c_status status;
status = saa_readb(SAA7134_I2C_ATTR_STATUS) & 0x0f;
d2printk(KERN_DEBUG "%s: i2c stat <= %s\n",dev->name,
str_i2c_status[status]);
i2c_dbg(2, "i2c stat <= %s\n", str_i2c_status[status]);
return status;
}
static inline void i2c_set_status(struct saa7134_dev *dev,
enum i2c_status status)
{
d2printk(KERN_DEBUG "%s: i2c stat => %s\n",dev->name,
str_i2c_status[status]);
i2c_dbg(2, "i2c stat => %s\n", str_i2c_status[status]);
saa_andorb(SAA7134_I2C_ATTR_STATUS,0x0f,status);
}
static inline void i2c_set_attr(struct saa7134_dev *dev, enum i2c_attr attr)
{
d2printk(KERN_DEBUG "%s: i2c attr => %s\n",dev->name,
str_i2c_attr[attr]);
i2c_dbg(2, "i2c attr => %s\n", str_i2c_attr[attr]);
saa_andorb(SAA7134_I2C_ATTR_STATUS,0xc0,attr << 6);
}
@ -169,7 +169,7 @@ static int i2c_reset(struct saa7134_dev *dev)
enum i2c_status status;
int count;
d2printk(KERN_DEBUG "%s: i2c reset\n",dev->name);
i2c_dbg(2, "i2c reset\n");
status = i2c_get_status(dev);
if (!i2c_is_error(status))
return true;
@ -207,7 +207,7 @@ static inline int i2c_send_byte(struct saa7134_dev *dev,
// dword |= 0x40 << 16; /* 400 kHz */
dword |= 0xf0 << 24;
saa_writel(SAA7134_I2C_ATTR_STATUS >> 2, dword);
d2printk(KERN_DEBUG "%s: i2c data => 0x%x\n",dev->name,data);
i2c_dbg(2, "i2c data => 0x%x\n", data);
if (!i2c_is_busy_wait(dev))
return -EIO;
@ -229,7 +229,7 @@ static inline int i2c_recv_byte(struct saa7134_dev *dev)
if (i2c_is_error(status))
return -EIO;
data = saa_readb(SAA7134_I2C_DATA);
d2printk(KERN_DEBUG "%s: i2c data <= 0x%x\n",dev->name,data);
i2c_dbg(2, "i2c data <= 0x%x\n", data);
return data;
}
@ -246,12 +246,12 @@ static int saa7134_i2c_xfer(struct i2c_adapter *i2c_adap,
if (!i2c_reset(dev))
return -EIO;
d2printk("start xfer\n");
d1printk(KERN_DEBUG "%s: i2c xfer:",dev->name);
i2c_dbg(2, "start xfer\n");
i2c_dbg(1, "i2c xfer:");
for (i = 0; i < num; i++) {
if (!(msgs[i].flags & I2C_M_NOSTART) || 0 == i) {
/* send address */
d2printk("send address\n");
i2c_dbg(2, "send address\n");
addr = msgs[i].addr << 1;
if (msgs[i].flags & I2C_M_RD)
addr |= 1;
@ -263,50 +263,50 @@ static int saa7134_i2c_xfer(struct i2c_adapter *i2c_adap,
* needed to talk to the mt352 demux
* thanks to pinnacle for the hint */
int quirk = 0xfe;
d1printk(" [%02x quirk]",quirk);
i2c_cont(1, " [%02x quirk]",quirk);
i2c_send_byte(dev,START,quirk);
i2c_recv_byte(dev);
}
d1printk(" < %02x", addr);
i2c_cont(1, " < %02x", addr);
rc = i2c_send_byte(dev,START,addr);
if (rc < 0)
goto err;
}
if (msgs[i].flags & I2C_M_RD) {
/* read bytes */
d2printk("read bytes\n");
i2c_dbg(2, "read bytes\n");
for (byte = 0; byte < msgs[i].len; byte++) {
d1printk(" =");
i2c_cont(1, " =");
rc = i2c_recv_byte(dev);
if (rc < 0)
goto err;
d1printk("%02x", rc);
i2c_cont(1, "%02x", rc);
msgs[i].buf[byte] = rc;
}
/* discard mysterious extra byte when reading
from Samsung S5H1411. i2c bus gets error
if we do not. */
if (0x19 == msgs[i].addr) {
d1printk(" ?");
i2c_cont(1, " ?");
rc = i2c_recv_byte(dev);
if (rc < 0)
goto err;
d1printk("%02x", rc);
i2c_cont(1, "%02x", rc);
}
} else {
/* write bytes */
d2printk("write bytes\n");
i2c_dbg(2, "write bytes\n");
for (byte = 0; byte < msgs[i].len; byte++) {
data = msgs[i].buf[byte];
d1printk(" %02x", data);
i2c_cont(1, " %02x", data);
rc = i2c_send_byte(dev,CONTINUE,data);
if (rc < 0)
goto err;
}
}
}
d2printk("xfer done\n");
d1printk(" >");
i2c_dbg(2, "xfer done\n");
i2c_cont(1, " >");
i2c_set_attr(dev,STOP);
rc = -EIO;
if (!i2c_is_busy_wait(dev))
@ -317,12 +317,12 @@ static int saa7134_i2c_xfer(struct i2c_adapter *i2c_adap,
/* ensure that the bus is idle for at least one bit slot */
msleep(1);
d1printk("\n");
i2c_cont(1, "\n");
return num;
err:
if (1 == i2c_debug) {
status = i2c_get_status(dev);
printk(" ERROR: %s\n",str_i2c_status[status]);
i2c_cont(1, " ERROR: %s\n", str_i2c_status[status]);
}
return rc;
}