From 1d31b58f648c4f754b23fed4d57acc941080e5ee Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Thu, 6 Oct 2011 11:26:30 -0700 Subject: 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 Signed-off-by: Ben Dooks --- drivers/i2c/busses/i2c-designware-platdrv.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/i2c/busses/i2c-designware-platdrv.c') diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 9d10ae8c6957..08783a6ff1a2 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -43,6 +43,10 @@ static struct i2c_algorithm i2c_dw_algo = { .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 @@ static int __devinit dw_i2c_probe(struct platform_device *pdev) 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; -- cgit v1.2.2