i2c-designware: Move retriveving the clock speed out of core code.
The clock frequecy supplied to the IP core is specific to a single
instance of the driver. This patch makes it possible to have multiple
Designware I2C cores in the system possibly running at different core
frequencies.
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c
index 38d5a6b..cd52f17 100644
--- a/drivers/i2c/busses/i2c-designware-core.c
+++ b/drivers/i2c/busses/i2c-designware-core.c
@@ -142,10 +142,12 @@
*/
int i2c_dw_init(struct dw_i2c_dev *dev)
{
- u32 input_clock_khz = clk_get_rate(dev->clk) / 1000;
+ u32 input_clock_khz;
u32 ic_con, hcnt, lcnt;
u32 reg;
+ input_clock_khz = dev->get_clk_rate_khz(dev);
+
/* Configure register endianess access */
reg = dw_readl(dev, DW_IC_COMP_TYPE);
if (reg == ___constant_swab32(DW_IC_COMP_TYPE_VALUE)) {