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| author | Jean Delvare <khali@linux-fr.org> | 2005-10-26 21:34:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-10-28 14:02:14 -0700 |
| commit | e8aac4a9b417643dd9739b48473790a09b8b6cbe (patch) | |
| tree | 70934ffa1a7327c62d13f09d0e1d8b74277b0a62 /drivers/i2c | |
| parent | 585b3160f8212e58325bc1c0292c2ec01ac5db84 (diff) | |
| download | kernel_samsung_aries-e8aac4a9b417643dd9739b48473790a09b8b6cbe.zip kernel_samsung_aries-e8aac4a9b417643dd9739b48473790a09b8b6cbe.tar.gz kernel_samsung_aries-e8aac4a9b417643dd9739b48473790a09b8b6cbe.tar.bz2 | |
[PATCH] i2c: i2c-i801 PEC code cleanups
The tests leading to the use of hardware PEC in the i2c-i801 driver
can be simplified.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 27e7894..4f63195 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -388,7 +388,7 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write, goto END; } - if (hwpec && command == I2C_SMBUS_BLOCK_DATA) { + if (hwpec) { /* wait for INTR bit as advised by Intel */ timeout = 0; do { @@ -416,12 +416,13 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, unsigned short flags, char read_write, u8 command, int size, union i2c_smbus_data * data) { - int hwpec = 0; + int hwpec; int block = 0; int ret, xact = 0; - if(isich4) - hwpec = (flags & I2C_CLIENT_PEC) != 0; + hwpec = isich4 && (flags & I2C_CLIENT_PEC) + && size != I2C_SMBUS_QUICK + && size != I2C_SMBUS_I2C_BLOCK_DATA; switch (size) { case I2C_SMBUS_QUICK: @@ -467,11 +468,9 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, return -1; } - if(isich4 && hwpec) { - if(size != I2C_SMBUS_QUICK && - size != I2C_SMBUS_I2C_BLOCK_DATA) - outb_p(1, SMBAUXCTL); /* enable HW PEC */ - } + if (hwpec) + outb_p(1, SMBAUXCTL); /* enable hardware PEC */ + if(block) ret = i801_block_transaction(data, read_write, size, hwpec); else { @@ -479,11 +478,8 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, ret = i801_transaction(); } - if(isich4 && hwpec) { - if(size != I2C_SMBUS_QUICK && - size != I2C_SMBUS_I2C_BLOCK_DATA) - outb_p(0, SMBAUXCTL); - } + if (hwpec) + outb_p(0, SMBAUXCTL); /* disable hardware PEC */ if(block) return ret; |