From 4bcfda09936da647b0a3b49d5dcb3c6c6ebb0395 Mon Sep 17 00:00:00 2001 From: "Tan, Raymond" Date: Wed, 3 Sep 2014 10:41:38 +0800 Subject: 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 Reviewed-by: Mika Westerberg Reviewed-by: Hock Leong Kweh Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-designware-platdrv.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/i2c') 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 #include #include +#include #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 = -- cgit v1.2.3