Similar to tca6507, we can just parse the standard LED
properties for pca9633.
Tested on a pca9632, which is compatible with pca9633.
Signed-off-by: Tony Lindgren <t...@atomide.com>
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/pca9633.txt
@@ -0,0 +1,42 @@
+LEDs connected to pca9633 or pca9632
+
+Required properties:
+- compatible : should be : "nxp,pca963x"
+
+Each led is represented as a sub-node of the nxp,pca9633 device.
+
+LED sub-node properties:
+- label : (optional) see Documentation/devicetree/bindings/leds/common.txt
+- reg : number of LED line (could be from 0 to 4)
+- linux,default-trigger : (optional)
+ see Documentation/devicetree/bindings/leds/common.txt
+
+Examples:
+
+pca9632: pca9632 {
+ compatible = "nxp,pca9632", "nxp,pca963x";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x62>;
+
+ red@0 {
+ label = "red";
+ reg = <0>;
+ linux,default-trigger = "none";
+ };
+ green@1 {
+ label = "green";
+ reg = <1>;
+ linux,default-trigger = "none";
+ };
+ blue@2 {
+ label = "blue";
+ reg = <2>;
+ linux,default-trigger = "none";
+ };
+ unused@3 {
+ label = "unused";
+ reg = <3>;
+ linux,default-trigger = "none";
+ };
+};
--- a/drivers/leds/leds-pca9633.c
+++ b/drivers/leds/leds-pca9633.c
@@ -22,6 +22,7 @@
#include <linux/i2c.h>
#include <linux/workqueue.h>
#include <linux/slab.h>
+#include <linux/of.h>
#include <linux/platform_data/leds-pca9633.h>
/* LED select registers determine the source that drives LED outputs */
@@ -93,6 +94,61 @@ static void pca9633_led_set(struct led_classdev *led_cdev,
schedule_work(&pca9633->work);
}
+#ifdef CONFIG_OF
+static struct pca9633_platform_data *
+pca9633_dt_init(struct i2c_client *client)
+{
+ struct device_node *np = client->dev.of_node, *child;
+ struct pca9633_platform_data *pdata;
+ struct led_info *pca9633_leds;
+ int count;
+
+ count = of_get_child_count(np);
+ if (!count || count > 4)
+ return ERR_PTR(-ENODEV);
+
+ pca9633_leds = devm_kzalloc(&client->dev,
+ sizeof(struct led_info) * count, GFP_KERNEL);
+ if (!pca9633_leds)
+ return ERR_PTR(-ENOMEM);
+
+ for_each_child_of_node(np, child) {
+ struct led_info led;
+ u32 reg;
+ int res;
+
+ led.name =
+ of_get_property(child, "label", NULL) ? : child->name;
+ led.default_trigger =
+ of_get_property(child, "linux,default-trigger", NULL);
+ res = of_property_read_u32(child, "reg", ®);
+ if (res != 0)
+ continue;
+ pca9633_leds[reg] = led;
+ }
+ pdata = devm_kzalloc(&client->dev,
+ sizeof(struct pca9633_platform_data), GFP_KERNEL);
+ if (!pdata)
+ return ERR_PTR(-ENOMEM);
+
+ pdata->leds.leds = pca9633_leds;
+ pdata->leds.num_leds = count;
+
+ return pdata;
+}
+
+static const struct of_device_id of_pca9633_match[] = {
+ { .compatible = "nxp,pca963x", },
+ {},
+};
+#else
+static struct pca9633_platform_data *
+pca9633_dt_init(struct i2c_client *client)
+{
+ return ERR_PTR(-ENODEV);
+}
+#endif
+
static int pca9633_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -102,6 +158,14 @@ static int pca9633_probe(struct i2c_client *client,
pdata = client->dev.platform_data;
+ if (!pdata) {
+ pdata = pca9633_dt_init(client);
+ if (IS_ERR(pdata)) {
+ dev_warn(&client->dev, "could not parse
configuration\n");
+ pdata = NULL;
+ }
+ }
+
if (pdata) {
if (pdata->leds.num_leds <= 0 || pdata->leds.num_leds > 4) {
dev_err(&client->dev, "board info must claim at most 4
LEDs");
@@ -181,6 +245,7 @@ static struct i2c_driver pca9633_driver = {
.driver = {
.name = "leds-pca9633",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(of_pca9633_match),
},
.probe = pca9633_probe,
.remove = pca9633_remove,
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