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| author | Dirk Brandewie <dirk.brandewie@gmail.com> | 2011-10-06 11:26:30 -0700 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2011-10-29 11:03:49 +0100 |
| commit | 1d31b58f648c4f754b23fed4d57acc941080e5ee (patch) | |
| tree | b67bc0f388bbc108747add9ef6ee7700d7737821 /drivers/i2c/busses/i2c-designware-platdrv.c | |
| parent | 2373f6b9744d5373b886f3ce1a985193cca0a356 (diff) | |
| download | kernel_samsung_smdk4412-1d31b58f648c4f754b23fed4d57acc941080e5ee.zip kernel_samsung_smdk4412-1d31b58f648c4f754b23fed4d57acc941080e5ee.tar.gz kernel_samsung_smdk4412-1d31b58f648c4f754b23fed4d57acc941080e5ee.tar.bz2 | |
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>
Diffstat (limited to 'drivers/i2c/busses/i2c-designware-platdrv.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-platdrv.c | 6 |
1 files changed, 6 insertions, 0 deletions
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 @@ 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; |