diff options
| author | Tan, Raymond <raymond.tan@intel.com> | 2014-09-03 10:41:38 +0800 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2014-09-29 22:41:17 +0200 |
| commit | 4bcfda09936da647b0a3b49d5dcb3c6c6ebb0395 (patch) | |
| tree | 6a838ea3032bcfb468308597bab573952a88a692 /drivers/i2c | |
| parent | 8e5f6b2a289c4374456fb785900b0b7445b719e6 (diff) | |
| download | linux-4bcfda09936da647b0a3b49d5dcb3c6c6ebb0395.tar.gz | |
i2c: designware: add support of platform data to set I2C mode
Use the platform data to set the clk_freq when there is no DT configuration available. The clk_freq in turn will determine the I2C speed mode. In Quark, there is currently no other configuration mechanism other than board files. Signed-off-by: Raymond Tan <raymond.tan@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Hock Leong Kweh <hock.leong.kweh@intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
| -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 8193e8eea764..4d6a6b94e2fa 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -41,6 +41,7 @@ #include <linux/io.h> #include <linux/slab.h> #include <linux/acpi.h> +#include <linux/platform_data/i2c-designware.h> #include "i2c-designware-core.h" static struct i2c_algorithm i2c_dw_algo = { @@ -122,6 +123,7 @@ static int dw_i2c_probe(struct platform_device *pdev) struct dw_i2c_dev *dev; struct i2c_adapter *adap; struct resource *mem; + struct dw_i2c_platform_data *pdata; int irq, r; u32 clk_freq; @@ -182,6 +184,10 @@ static int dw_i2c_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Only 100kHz and 400kHz supported"); return -EINVAL; } + } else { + pdata = dev_get_platdata(&pdev->dev); + if (pdata) + clk_freq = pdata->i2c_scl_freq; } dev->functionality = |