This patch adds device tree support to the LPC32xx's ADC.
Signed-off-by: Roland Stigge <stigge@xxxxxxxxx>
---
Applies to v3.4-rc3
Changes since v3:
* Changed "compatible" strings to non-wildcard versions
Thanks to Arnd Bergmann and Lars-Peter Clausen for reviewing!
Documentation/devicetree/bindings/staging/iio/adc/lpc32xx-adc.txt | 17 ++++++++++
drivers/staging/iio/adc/lpc32xx_adc.c | 13 +++++++
2 files changed, 30 insertions(+)
--- /dev/null
+++ linux-2.6/Documentation/devicetree/bindings/staging/iio/adc/lpc32xx-adc.txt
@@ -0,0 +1,17 @@
+* NXP LPC32xx SoC ADC controller
+
+Required properties:
+- compatible: must be "nxp,lpc3220-adc", "nxp,lpc3230-adc", "nxp,lpc3240-adc"
+ or "nxp,lpc3250-adc"
+- reg: physical base address of the controller and length of memory mapped
+ region.
+- interrupts: The ADC interrupt
+
+Example:
+
+ adc@40048000 {
+ compatible = "nxp,lpc3250-adc";
+ reg = <0x40048000 0x1000>;
+ interrupt-parent = <&mic>;
+ interrupts = <39 0>;
+ };
--- linux-2.6.orig/drivers/staging/iio/adc/lpc32xx_adc.c
+++ linux-2.6/drivers/staging/iio/adc/lpc32xx_adc.c
@@ -30,6 +30,7 @@
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/completion.h>
+#include <linux/of.h>
#include "../iio.h"
#include "../sysfs.h"
@@ -221,12 +222,24 @@ static int __devexit lpc32xx_adc_remove(
return 0;
}
+#ifdef CONFIG_OF
+static const struct of_device_id lpc32xx_adc_match[] = {
+ { .compatible = "nxp,lpc3220-adc" },
+ { .compatible = "nxp,lpc3230-adc" },
+ { .compatible = "nxp,lpc3240-adc" },
+ { .compatible = "nxp,lpc3250-adc" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, lpc32xx_adc_match);
+#endif
+
static struct platform_driver lpc32xx_adc_driver = {
.probe = lpc32xx_adc_probe,
.remove = __devexit_p(lpc32xx_adc_remove),
.driver = {
.name = MOD_NAME,
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(lpc32xx_adc_match),
},
};
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