diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-diolan-u2c.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-diolan-u2c.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/i2c/busses/i2c-diolan-u2c.c b/drivers/i2c/busses/i2c-diolan-u2c.c index 382f105e0fe3..b48b7888936f 100644 --- a/drivers/i2c/busses/i2c-diolan-u2c.c +++ b/drivers/i2c/busses/i2c-diolan-u2c.c @@ -64,8 +64,6 @@ #define U2C_I2C_SPEED_2KHZ 242 /* 2 kHz, minimum speed */ #define U2C_I2C_SPEED(f) ((DIV_ROUND_UP(1000000, (f)) - 10) / 2 + 1) -#define U2C_I2C_FREQ_FAST 400000 -#define U2C_I2C_FREQ_STD 100000 #define U2C_I2C_FREQ(s) (1000000 / (2 * (s - 1) + 10)) #define DIOLAN_USB_TIMEOUT 100 /* in ms */ @@ -87,7 +85,7 @@ struct i2c_diolan_u2c { int ocount; /* Number of enqueued messages */ }; -static uint frequency = U2C_I2C_FREQ_STD; /* I2C clock frequency in Hz */ +static uint frequency = I2C_MAX_STANDARD_MODE_FREQ; /* I2C clock frequency in Hz */ module_param(frequency, uint, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(frequency, "I2C clock frequency in hertz"); @@ -299,12 +297,12 @@ static int diolan_init(struct i2c_diolan_u2c *dev) { int speed, ret; - if (frequency >= 200000) { + if (frequency >= 2 * I2C_MAX_STANDARD_MODE_FREQ) { speed = U2C_I2C_SPEED_FAST; - frequency = U2C_I2C_FREQ_FAST; - } else if (frequency >= 100000 || frequency == 0) { + frequency = I2C_MAX_FAST_MODE_FREQ; + } else if (frequency >= I2C_MAX_STANDARD_MODE_FREQ || frequency == 0) { speed = U2C_I2C_SPEED_STD; - frequency = U2C_I2C_FREQ_STD; + frequency = I2C_MAX_STANDARD_MODE_FREQ; } else { speed = U2C_I2C_SPEED(frequency); if (speed > U2C_I2C_SPEED_2KHZ) |