drivers/misc/lis3lv02d/lis3lv02d_i2c.c: add lis3lv02d device tree init
Add lis3lv02d device tree initialization code/API to take pdata from device node. Also adds device tree init matching table support to lis3lv02d_i2c driver. If the driver data is passed from device tree, then this driver picks up platform data from device node through common/generic lis3lv02d.c driver. [akpm@linux-foundation.org: fix CONFIG_OF=n build] Signed-off-by: AnilKumar Ch <anilkumar@ti.com> Cc: Eric Piel <eric.piel@tremplin-utc.net> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Tony Lindgren <tony@atomide.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -11,6 +11,12 @@ Required properties for the SPI bindings:
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constrained by external circuitry
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- interrupts: the interrupt generated by the device
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Required properties for the I2C bindings:
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- compatible: should be set to "st,lis3lv02d"
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- reg: i2c slave address
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- Vdd-supply: The input supply for Vdd
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- Vdd_IO-supply: The input supply for Vdd_IO
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Optional properties for all bus drivers:
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@ -74,3 +80,33 @@ Example for a SPI device node:
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st,wakeup-z-hi;
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};
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Example for a I2C device node:
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lis331dlh: lis331dlh@18 {
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compatible = "st,lis331dlh", "st,lis3lv02d";
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reg = <0x18>;
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Vdd-supply = <&lis3_reg>;
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Vdd_IO-supply = <&lis3_reg>;
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st,click-single-x;
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st,click-single-y;
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st,click-single-z;
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st,click-thresh-x = <10>;
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st,click-thresh-y = <10>;
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st,click-thresh-z = <10>;
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st,irq1-click;
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st,irq2-click;
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st,wakeup-x-lo;
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st,wakeup-x-hi;
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st,wakeup-y-lo;
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st,wakeup-y-hi;
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st,wakeup-z-lo;
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st,wakeup-z-hi;
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st,min-limit-x = <120>;
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st,min-limit-y = <120>;
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st,min-limit-z = <140>;
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st,max-limit-x = <550>;
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st,max-limit-y = <550>;
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st,max-limit-z = <750>;
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};
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@ -31,6 +31,10 @@
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#include <linux/i2c.h>
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#include <linux/pm_runtime.h>
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#include <linux/delay.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/of_device.h>
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#include "lis3lv02d.h"
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#define DRV_NAME "lis3lv02d_i2c"
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@ -102,12 +106,30 @@ static int lis3_i2c_init(struct lis3lv02d *lis3)
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static union axis_conversion lis3lv02d_axis_map =
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{ .as_array = { LIS3_DEV_X, LIS3_DEV_Y, LIS3_DEV_Z } };
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#ifdef CONFIG_OF
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static struct of_device_id lis3lv02d_i2c_dt_ids[] = {
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{ .compatible = "st,lis3lv02d" },
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{}
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};
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MODULE_DEVICE_TABLE(of, lis3lv02d_i2c_dt_ids);
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#endif
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static int __devinit lis3lv02d_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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int ret = 0;
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struct lis3lv02d_platform_data *pdata = client->dev.platform_data;
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#ifdef CONFIG_OF
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if (of_match_device(lis3lv02d_i2c_dt_ids, &client->dev)) {
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lis3_dev.of_node = client->dev.of_node;
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ret = lis3lv02d_init_dt(&lis3_dev);
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if (ret)
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return ret;
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pdata = lis3_dev.pdata;
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}
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#endif
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if (pdata) {
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if ((pdata->driver_features & LIS3_USE_BLOCK_READ) &&
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(i2c_check_functionality(client->adapter,
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@ -255,6 +277,7 @@ static struct i2c_driver lis3lv02d_i2c_driver = {
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.name = DRV_NAME,
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.owner = THIS_MODULE,
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.pm = &lis3_pm_ops,
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.of_match_table = of_match_ptr(lis3lv02d_i2c_dt_ids),
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},
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.probe = lis3lv02d_i2c_probe,
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.remove = __devexit_p(lis3lv02d_i2c_remove),
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