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i2c: ihs_i2c: Factor out send_buffer method

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Simplify the driver logic by extracting a common send_buffer method.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
This commit is contained in:
Mario Six 2018-01-15 11:08:12 +01:00 committed by Heiko Schocher
parent 92164216a7
commit 9cef983d1c
1 changed files with 34 additions and 32 deletions
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66
drivers/i2c/ihs_i2c.c
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@ -198,29 +198,45 @@ static int ihs_i2c_transfer(uchar chip, uchar *buffer, int len, bool read,
}
#ifdef CONFIG_DM_I2C
static int ihs_i2c_address(struct udevice *dev, uchar chip, u8 *addr, int alen, bool hold_bus)
static int ihs_i2c_send_buffer(struct udevice *dev, uchar chip, u8 *data, int len, bool hold_bus, int read)
#else
static int ihs_i2c_send_buffer(uchar chip, u8 *data, int len, bool hold_bus,
int read)
#endif
{
while (len) {
int transfer = min(len, 2);
bool is_last = len <= transfer;
#ifdef CONFIG_DM_I2C
if (ihs_i2c_transfer(dev, chip, data, transfer, read,
hold_bus ? false : is_last))
return 1;
#else
if (ihs_i2c_transfer(chip, data, transfer, read,
hold_bus ? false : is_last))
return 1;
#endif
data += transfer;
len -= transfer;
}
return 0;
}
#ifdef CONFIG_DM_I2C
static int ihs_i2c_address(struct udevice *dev, uchar chip, u8 *addr, int alen,
bool hold_bus)
#else
static int ihs_i2c_address(uchar chip, u8 *addr, int alen, bool hold_bus)
#endif
{
while (alen) {
int transfer = min(alen, 2);
bool is_last = alen <= transfer;
#ifdef CONFIG_DM_I2C
if (ihs_i2c_transfer(dev, chip, addr, transfer, I2COP_WRITE,
hold_bus ? false : is_last))
return 1;
return ihs_i2c_send_buffer(dev, chip, addr, alen, hold_bus, I2COP_WRITE);
#else
if (ihs_i2c_transfer(chip, addr, transfer, I2COP_WRITE,
hold_bus ? false : is_last))
return 1;
return ihs_i2c_send_buffer(chip, addr, alen, hold_bus, I2COP_WRITE);
#endif
alen -= transfer;
}
return 0;
}
#ifdef CONFIG_DM_I2C
@ -240,25 +256,11 @@ static int ihs_i2c_access(struct i2c_adapter *adap, uchar chip, u8 *addr,
return 1;
#endif
while (len) {
int transfer = min(len, 2);
bool is_last = len <= transfer;
#ifdef CONFIG_DM_I2C
if (ihs_i2c_transfer(dev, chip, buffer, transfer, read,
is_last))
return 2;
return ihs_i2c_send_buffer(dev, chip, buffer, len, false, read);
#else
if (ihs_i2c_transfer(chip, buffer, transfer, read,
is_last))
return 2;
return ihs_i2c_send_buffer(chip, buffer, len, false, read);
#endif
buffer += transfer;
len -= transfer;
}
return 0;
}
#ifdef CONFIG_DM_I2C