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Input: lpc32xx_ts - add device tree support 

This change implements device tree support for the LPC32xx SoC's touchscreen
controller.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Roland Stigge 2012-04-20 23:02:49 -07:00 committed by Dmitry Torokhov
parent b5e9528bd1
commit 5cb727a867
2 changed files with 26 additions and 0 deletions
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16
Documentation/devicetree/bindings/input/touchscreen/lpc32xx-tsc.txt Normal file
View File

@ -0,0 +1,16 @@
* NXP LPC32xx SoC Touchscreen Controller (TSC)
Required properties:
- compatible: must be "nxp,lpc32xx-tsc"
- reg: physical base address of the controller and length of memory mapped
region.
- interrupts: The TSC/ADC interrupt
Example:
tsc@40048000 {
compatible = "nxp,lpc32xx-tsc";
reg = <0x40048000 0x1000>;
interrupt-parent = <&mic>;
interrupts = <39 0>;
};

10
drivers/input/touchscreen/lpc32xx_ts.c
View File

@ -22,6 +22,7 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/of.h>
/*
* Touchscreen controller register offsets
@ -383,6 +384,14 @@ static const struct dev_pm_ops lpc32xx_ts_pm_ops = {
#define LPC32XX_TS_PM_OPS NULL
#endif
#ifdef CONFIG_OF
static struct of_device_id lpc32xx_tsc_of_match[] = {
{ .compatible = "nxp,lpc32xx-tsc", },
{ },
};
MODULE_DEVICE_TABLE(of, lpc32xx_tsc_of_match);
#endif
static struct platform_driver lpc32xx_ts_driver = {
.probe = lpc32xx_ts_probe,
.remove = __devexit_p(lpc32xx_ts_remove),
@ -390,6 +399,7 @@ static struct platform_driver lpc32xx_ts_driver = {
.name = MOD_NAME,
.owner = THIS_MODULE,
.pm = LPC32XX_TS_PM_OPS,
.of_match_table = of_match_ptr(lpc32xx_tsc_of_match),
},
};
module_platform_driver(lpc32xx_ts_driver);