@@ -194,7 +194,7 @@ static void iic_set_clr(struct sh_mobile_i2c_data *pd, int offs,
iic_wr(pd, offs, (iic_rd(pd, offs) | set) & ~clr);
}
-static u32 sh_mobile_i2c_iccl(unsigned long count_khz, u32 tLOW, u32 tf, int offset)
+static u32 sh_mobile_i2c_iccl(unsigned long count_khz, u32 tLOW, u32 tf)
{
/*
* Conditional expression:
@@ -206,10 +206,10 @@ static u32 sh_mobile_i2c_iccl(unsigned long count_khz, u32 tLOW, u32 tf, int off
* account the fall time of SCL signal (tf). Default tf value
* should be 0.3 us, for safety.
*/
- return (((count_khz * (tLOW + tf)) + 5000) / 10000) + offset;
+ return (((count_khz * (tLOW + tf)) + 5000) / 10000);
}
-static u32 sh_mobile_i2c_icch(unsigned long count_khz, u32 tHIGH, u32 tf, int offset)
+static u32 sh_mobile_i2c_icch(unsigned long count_khz, u32 tHIGH, u32 tf)
{
/*
* Conditional expression:
@@ -225,14 +225,13 @@ static u32 sh_mobile_i2c_icch(unsigned long count_khz, u32 tHIGH, u32 tf, int of
* to take into account the fall time of SDA signal (tf) at START
* condition, in order to meet both tHIGH and tHD;STA specs.
*/
- return (((count_khz * (tHIGH + tf)) + 5000) / 10000) + offset;
+ return (((count_khz * (tHIGH + tf)) + 5000) / 10000);
}
static void sh_mobile_i2c_init(struct sh_mobile_i2c_data *pd)
{
unsigned long i2c_clk_khz;
u32 tHIGH, tLOW, tf;
- int offset;
/* Get clock rate after clock is enabled */
clk_prepare_enable(pd->clk);
@@ -243,26 +242,24 @@ static void sh_mobile_i2c_init(struct sh_mobile_i2c_data *pd)
tLOW = 47; /* tLOW = 4.7 us */
tHIGH = 40; /* tHD;STA = tHIGH = 4.0 us */
tf = 3; /* tf = 0.3 us */
- offset = 0; /* No offset */
} else if (pd->bus_speed == FAST_MODE) {
tLOW = 13; /* tLOW = 1.3 us */
tHIGH = 6; /* tHD;STA = tHIGH = 0.6 us */
tf = 3; /* tf = 0.3 us */
- offset = 0; /* No offset */
} else {
dev_err(pd->dev, "unrecognized bus speed %lu Hz\n",
pd->bus_speed);
goto out;
}
- pd->iccl = sh_mobile_i2c_iccl(i2c_clk_khz, tLOW, tf, offset);
+ pd->iccl = sh_mobile_i2c_iccl(i2c_clk_khz, tLOW, tf);
/* one more bit of ICCL in ICIC */
if ((pd->iccl > 0xff) && (pd->flags & IIC_FLAG_HAS_ICIC67))
pd->icic |= ICIC_ICCLB8;
else
pd->icic &= ~ICIC_ICCLB8;
- pd->icch = sh_mobile_i2c_icch(i2c_clk_khz, tHIGH, tf, offset);
+ pd->icch = sh_mobile_i2c_icch(i2c_clk_khz, tHIGH, tf);
/* one more bit of ICCH in ICIC */
if ((pd->icch > 0xff) && (pd->flags & IIC_FLAG_HAS_ICIC67))
pd->icic |= ICIC_ICCHB8;