diff options
| -rw-r--r-- | drivers/i2c/busses/i2c-viapro.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c index a89a21264d37..c1c9eb1d714f 100644 --- a/drivers/i2c/busses/i2c-viapro.c +++ b/drivers/i2c/busses/i2c-viapro.c @@ -104,6 +104,30 @@ static struct i2c_adapter vt596_adapter; #define FEATURE_I2CBLOCK (1<<0) static unsigned int vt596_features; +#ifdef DEBUG +static void vt596_dump_regs(const char *msg, u8 size) +{ + dev_dbg(&vt596_adapter.dev, "%s: STS=%02x CNT=%02x CMD=%02x ADD=%02x " + "DAT=%02x,%02x\n", msg, inb_p(SMBHSTSTS), inb_p(SMBHSTCNT), + inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), + inb_p(SMBHSTDAT1)); + + if (size == VT596_BLOCK_DATA + || size == VT596_I2C_BLOCK_DATA) { + int i; + + dev_dbg(&vt596_adapter.dev, "BLK="); + for (i = 0; i < I2C_SMBUS_BLOCK_MAX / 2; i++) + printk("%02x,", inb_p(SMBBLKDAT)); + printk("\n"); + dev_dbg(&vt596_adapter.dev, " "); + for (; i < I2C_SMBUS_BLOCK_MAX - 1; i++) + printk("%02x,", inb_p(SMBBLKDAT)); + printk("%02x\n", inb_p(SMBBLKDAT)); + } +} +#endif + /* Return -1 on error, 0 on success */ static int vt596_transaction(u8 size) { @@ -111,10 +135,9 @@ static int vt596_transaction(u8 size) int result = 0; int timeout = 0; - dev_dbg(&vt596_adapter.dev, "Transaction (pre): CNT=%02x, CMD=%02x, " - "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT), - inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), - inb_p(SMBHSTDAT1)); +#ifdef DEBUG + vt596_dump_regs("Transaction (pre)", size); +#endif /* Make sure the SMBus host is ready to start transmitting */ if ((temp = inb_p(SMBHSTSTS)) & 0x1F) { @@ -169,10 +192,9 @@ static int vt596_transaction(u8 size) if (temp & 0x1F) outb_p(temp, SMBHSTSTS); - dev_dbg(&vt596_adapter.dev, "Transaction (post): CNT=%02x, CMD=%02x, " - "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT), - inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), - inb_p(SMBHSTDAT1)); +#ifdef DEBUG + vt596_dump_regs("Transaction (post)", size); +#endif return result; } |