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From 7c4815929276b2e223eb6f2e49afe5071d4294a5 Mon Sep 17 00:00:00 2001
From: Eddie James <eajames@linux.ibm.com>
Date: Fri, 16 Jul 2021 17:03:30 -0500
Subject: [PATCH] leds: pca955x: Let the core process the fwnode
Much of the fwnode processing in the PCA955x driver is now in the
LEDs core driver, so pass the fwnode in the init data when
registering the LED device. In order to preserve the existing naming
scheme, check for an empty name and set it to the LED number.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
---
drivers/leds/leds-pca955x.c | 58 +++++++++++++++++++------------------
1 file changed, 30 insertions(+), 28 deletions(-)
--- a/drivers/leds/leds-pca955x.c
+++ b/drivers/leds/leds-pca955x.c
@@ -127,10 +127,9 @@ struct pca955x_led {
struct pca955x *pca955x;
struct led_classdev led_cdev;
int led_num; /* 0 .. 15 potentially */
- char name[32];
u32 type;
int default_state;
- const char *default_trigger;
+ struct fwnode_handle *fwnode;
};
struct pca955x_platform_data {
@@ -439,7 +438,6 @@ pca955x_get_pdata(struct i2c_client *cli
return ERR_PTR(-ENOMEM);
device_for_each_child_node(&client->dev, child) {
- const char *name;
const char *state;
u32 reg;
int res;
@@ -448,17 +446,10 @@ pca955x_get_pdata(struct i2c_client *cli
if ((res != 0) || (reg >= chip->bits))
continue;
- res = fwnode_property_read_string(child, "label", &name);
- if ((res != 0) && is_of_node(child))
- name = to_of_node(child)->name;
-
led = &pdata->leds[reg];
- snprintf(led->name, sizeof(led->name), "%s", name);
-
led->type = PCA955X_TYPE_LED;
+ led->fwnode = child;
fwnode_property_read_u32(child, "type", &led->type);
- fwnode_property_read_string(child, "linux,default-trigger",
- &led->default_trigger);
if (!fwnode_property_read_string(child, "default-state",
&state)) {
@@ -495,11 +486,14 @@ static int pca955x_probe(struct i2c_clie
struct pca955x_led *pca955x_led;
struct pca955x_chipdef *chip;
struct led_classdev *led;
+ struct led_init_data init_data;
struct i2c_adapter *adapter;
int i, err;
struct pca955x_platform_data *pdata;
int ngpios = 0;
+ bool set_default_label = false;
bool keep_pwm = false;
+ char default_label[8];
chip = &pca955x_chipdefs[id->driver_data];
adapter = client->adapter;
@@ -547,6 +541,9 @@ static int pca955x_probe(struct i2c_clie
pca955x->client = client;
pca955x->chipdef = chip;
+ init_data.devname_mandatory = false;
+ init_data.devicename = "pca955x";
+
for (i = 0; i < chip->bits; i++) {
pca955x_led = &pca955x->leds[i];
pca955x_led->led_num = i;
@@ -560,23 +557,7 @@ static int pca955x_probe(struct i2c_clie
ngpios++;
break;
case PCA955X_TYPE_LED:
- /*
- * Platform data can specify LED names and
- * default triggers
- */
- if (pdata->leds[i].name[0] == '\0')
- snprintf(pdata->leds[i].name,
- sizeof(pdata->leds[i].name), "%d", i);
-
- snprintf(pca955x_led->name, sizeof(pca955x_led->name),
- "pca955x:%s", pdata->leds[i].name);
-
led = &pca955x_led->led_cdev;
- if (pdata->leds[i].default_trigger)
- led->default_trigger =
- pdata->leds[i].default_trigger;
-
- led->name = pca955x_led->name;
led->brightness_set_blocking = pca955x_led_set;
led->brightness_get = pca955x_led_get;
@@ -592,7 +573,28 @@ static int pca955x_probe(struct i2c_clie
return err;
}
- err = devm_led_classdev_register(&client->dev, led);
+ init_data.fwnode = pdata->leds[i].fwnode;
+
+ if (is_of_node(init_data.fwnode)) {
+ if (to_of_node(init_data.fwnode)->name[0] ==
+ '\0')
+ set_default_label = true;
+ else
+ set_default_label = false;
+ } else {
+ set_default_label = true;
+ }
+
+ if (set_default_label) {
+ snprintf(default_label, sizeof(default_label),
+ "%d", i);
+ init_data.default_label = default_label;
+ } else {
+ init_data.default_label = NULL;
+ }
+
+ err = devm_led_classdev_register_ext(&client->dev, led,
+ &init_data);
if (err)
return err;
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