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-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 9d10ae8..08783a6 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -43,6 +43,10 @@
.master_xfer = i2c_dw_xfer,
.functionality = i2c_dw_func,
};
+static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev)
+{
+ return clk_get_rate(dev->clk)/1000;
+}
static int __devinit dw_i2c_probe(struct platform_device *pdev)
{
@@ -84,6 +88,8 @@
platform_set_drvdata(pdev, dev);
dev->clk = clk_get(&pdev->dev, NULL);
+ dev->get_clk_rate_khz = i2c_dw_get_clk_rate_khz;
+
if (IS_ERR(dev->clk)) {
r = -ENODEV;
goto err_free_mem;