Dan,
On 12/01/2017 05:59 PM, Dan Murphy wrote:
> On 12/01/2017 10:56 AM, Dan Murphy wrote:
>> Fix the LED label generation for the LP8860 to
>> conform with the
>>
>> Documentation/devicetree/bindings/leds/common.txt
>>
>> document indicating the LED label should be part of a
>> child node to the device parent. If no label is
>> in the child node then the LED label is created based
>> on the parent node name and the alternate name passed in.
>>
>> Signed-off-by: Dan Murphy <dmurphy@xxxxxx>
>> ---
>>
>> v6 - New patch to use the new LED class API
>>
>> drivers/leds/leds-lp8860.c | 27 +++++++++++++++------------
>> 1 file changed, 15 insertions(+), 12 deletions(-)
>>
>> diff --git a/drivers/leds/leds-lp8860.c b/drivers/leds/leds-lp8860.c
>> index 3e70775a2d54..26bbfa144402 100644
>> --- a/drivers/leds/leds-lp8860.c
>> +++ b/drivers/leds/leds-lp8860.c
>> @@ -22,6 +22,7 @@
>> #include <linux/of_gpio.h>
>> #include <linux/gpio/consumer.h>
>> #include <linux/slab.h>
>> +#include <uapi/linux/uleds.h>
>>
>> #define LP8860_DISP_CL1_BRT_MSB 0x00
>> #define LP8860_DISP_CL1_BRT_LSB 0x01
>> @@ -86,8 +87,6 @@
>>
>> #define LP8860_CLEAR_FAULTS 0x01
>>
>> -#define LP8860_DISP_LED_NAME "display_cluster"
>> -
>> /**
>> * struct lp8860_led -
>> * @lock - Lock for reading/writing the device
>> @@ -107,7 +106,7 @@ struct lp8860_led {
>> struct regmap *eeprom_regmap;
>> struct gpio_desc *enable_gpio;
>> struct regulator *regulator;
>> - const char *label;
>> + char label[LED_MAX_NAME_SIZE];
>> };
>>
>> struct lp8860_eeprom_reg {
>> @@ -318,7 +317,7 @@ static const struct regmap_config lp8860_regmap_config = {
>> .max_register = LP8860_EEPROM_UNLOCK,
>> .reg_defaults = lp8860_reg_defs,
>> .num_reg_defaults = ARRAY_SIZE(lp8860_reg_defs),
>> - .cache_type = REGCACHE_NONE,
>> + .cache_type = REGCACHE_RBTREE,
>> };
>>
>> static const struct reg_default lp8860_eeprom_defs[] = {
>> @@ -356,7 +355,7 @@ static const struct regmap_config lp8860_eeprom_regmap_config = {
>> .max_register = LP8860_EEPROM_REG_24,
>> .reg_defaults = lp8860_eeprom_defs,
>> .num_reg_defaults = ARRAY_SIZE(lp8860_eeprom_defs),
>> - .cache_type = REGCACHE_NONE,
>> + .cache_type = REGCACHE_RBTREE,
>> };
>>
>> static int lp8860_probe(struct i2c_client *client,
>> @@ -365,19 +364,23 @@ static int lp8860_probe(struct i2c_client *client,
>> int ret;
>> struct lp8860_led *led;
>> struct device_node *np = client->dev.of_node;
>> + struct device_node *child_node;
>> +
>> + if (!client->dev.of_node)
>> + return -ENODEV;
>
> This is actually a bug in the driver. I can submit this independently or keep this here
>
>>
>> led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL);
>> if (!led)
>> return -ENOMEM;
>>
>> - led->label = LP8860_DISP_LED_NAME;
>> + for_each_available_child_of_node(np, child_node) {
>> + led->led_dev.default_trigger = of_get_property(child_node,
>> + "linux,default-trigger",
>> + NULL);
>
> Not sure if you want me to pull this out into a different patch or just add it to the
> commit message
Yes, it would be nice. Also related change in DT bindings should be
placed in the same patch.
>>
>> - if (client->dev.of_node) {
>> - ret = of_property_read_string(np, "label", &led->label);
>> - if (ret) {
>> - dev_err(&client->dev, "Missing label in dt\n");
>> - return -EINVAL;
>> - }
>> + of_led_compose_name(np, child_node, "white:backlight",
>> + sizeof("white:backlight"),
>> + led->label);
>> }
>>
>> led->enable_gpio = devm_gpiod_get_optional(&client->dev,
>>
>
>
--
Best regards,
Jacek Anaszewski
