i2c: mxs: add device tree probe support

Add device tree probe support for i2c-mxs driver.  So far, it's only
been tested on imx28.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
This commit is contained in:
Shawn Guo 2012-05-12 13:43:32 +08:00
parent 35d23047f8
commit b237866848
2 changed files with 29 additions and 0 deletions

View File

@ -0,0 +1,16 @@
* Freescale MXS Inter IC (I2C) Controller
Required properties:
- compatible: Should be "fsl,<chip>-i2c"
- reg: Should contain registers location and length
- interrupts: Should contain ERROR and DMA interrupts
Examples:
i2c0: i2c@80058000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "fsl,imx28-i2c";
reg = <0x80058000 2000>;
interrupts = <111 68>;
};

View File

@ -27,6 +27,9 @@
#include <linux/jiffies.h>
#include <linux/io.h>
#include <linux/pinctrl/consumer.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_i2c.h>
#include <mach/common.h>
@ -371,6 +374,7 @@ static int __devinit mxs_i2c_probe(struct platform_device *pdev)
adap->algo = &mxs_i2c_algo;
adap->dev.parent = dev;
adap->nr = pdev->id;
adap->dev.of_node = pdev->dev.of_node;
i2c_set_adapdata(adap, i2c);
err = i2c_add_numbered_adapter(adap);
if (err) {
@ -380,6 +384,8 @@ static int __devinit mxs_i2c_probe(struct platform_device *pdev)
return err;
}
of_i2c_register_devices(adap);
return 0;
}
@ -399,10 +405,17 @@ static int __devexit mxs_i2c_remove(struct platform_device *pdev)
return 0;
}
static const struct of_device_id mxs_i2c_dt_ids[] = {
{ .compatible = "fsl,imx28-i2c", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mxs_i2c_dt_ids);
static struct platform_driver mxs_i2c_driver = {
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
.of_match_table = mxs_i2c_dt_ids,
},
.remove = __devexit_p(mxs_i2c_remove),
};