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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>
This commit is contained in:
Eddie James 2021-07-16 17:03:30 -05:00 committed by Pavel Machek
parent e46cb6d0c7
commit 7c48159292
1 changed files with 30 additions and 28 deletions
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58
drivers/leds/leds-pca955x.c
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@ -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 *client, struct pca955x_chipdef *chip)
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 *client, struct pca955x_chipdef *chip)
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_client *client,
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_client *client,
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_client *client,
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_client *client,
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;