Re: [PATCH v6 5/6] leds: lp8860: Update the LED label generation

From: Jacek Anaszewski
Date: Tue Dec 05 2017 - 14:57:33 EST


Dan,

On 12/04/2017 02:11 PM, Dan Murphy wrote:
> Jacek
>
> On 12/03/2017 07:57 AM, Jacek Anaszewski wrote:
>> Dan,
>>
>> On 12/01/2017 05:56 PM, 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,
>>
>> This seems to be an unrelated change.
>> Please split it to the separate patch and explain its merit.
>
> ACK. It will be a separate patch
>
>>
>>> };
>>>
>>> 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;
>>>
>>> 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);
>>>
>>> - 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);
>>
>> Let's skip it for now.
>
> I will make the same change here as I do for the lm3692x driver.
>
>>
>> Please also CC driver author always when you're modifying it.
>
> The author was on the email.
>
> It is me. ;)
>
> MODULE_AUTHOR("Dan Murphy <dmurphy@xxxxxx>");


OK, but the author of the driver touched by the patch 6/6
is different :-)

--
Best regards,
Jacek Anaszewski