The power limit indicator may have 2 behaviors: 1. Its color gradually changes from green to red; 2. It displays a single color Add support for it. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> --- drivers/staging/nuc-led/nuc-wmi.c | 93 +++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) diff --git a/drivers/staging/nuc-led/nuc-wmi.c b/drivers/staging/nuc-led/nuc-wmi.c index 9e8164cd77ec..2d9c49d72703 100644 --- a/drivers/staging/nuc-led/nuc-wmi.c +++ b/drivers/staging/nuc-led/nuc-wmi.c @@ -1764,6 +1764,8 @@ static ssize_t store_ethernet_type(struct device *dev, if (!nuc_wmi_test_control(dev, led, ctrl)) return -ENODEV; + tmp = strsep((char **)&buf, "\n"); + for (val = 0; val < ARRAY_SIZE(ethernet_type); val++) if (!strcasecmp(tmp, ethernet_type[val])) break; @@ -1783,12 +1785,102 @@ static ssize_t store_ethernet_type(struct device *dev, return len; } +/* Power Limit Indication scheme */ +static const char * const power_limit_scheme[] = { + "green to red", + "single color" +}; + +static ssize_t show_power_limit_scheme(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct led_classdev *cdev = dev_get_drvdata(dev); + struct nuc_nmi_led *led = container_of(cdev, struct nuc_nmi_led, cdev); + u8 input[NUM_INPUT_ARGS] = { 0 }; + u8 output[NUM_OUTPUT_ARGS]; + int ctrl, ret, val, i, n; + int size = PAGE_SIZE; + char *p = buf; + + if (led->indicator != LED_IND_POWER_LIMIT) + return -EINVAL; + + ctrl = led->reg_table[led->indicator][LED_FUNC_POWER_STATE_NUM_CTRLS]; + + if (!nuc_wmi_test_control(dev, led, ctrl)) + return -ENODEV; + + input[0] = LED_NEW_GET_CONTROL_ITEM; + input[1] = led->id; + input[2] = led->indicator; + input[3] = ctrl; + + ret = nuc_nmi_cmd(dev, LED_NEW_GET_STATUS, input, output); + if (ret) + return ret; + + val = output[0]; + + for (i = 0; i < ARRAY_SIZE(power_limit_scheme); i++) { + if (i == val) + n = scnprintf(p, size, "[%s] ", power_limit_scheme[i]); + else + n = scnprintf(p, size, "%s ", power_limit_scheme[i]); + p += n; + size -= n; + } + size -= scnprintf(p, size, "\n"); + + return PAGE_SIZE - size; +} + +static ssize_t store_power_limit_scheme(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct led_classdev *cdev = dev_get_drvdata(dev); + struct nuc_nmi_led *led = container_of(cdev, struct nuc_nmi_led, cdev); + u8 input[NUM_INPUT_ARGS] = { 0 }; + int ctrl, val, ret; + const char *tmp; + + if (led->indicator != LED_IND_POWER_LIMIT) + return -EINVAL; + + ctrl = led->reg_table[led->indicator][LED_FUNC_POWER_STATE_NUM_CTRLS]; + + if (!nuc_wmi_test_control(dev, led, ctrl)) + return -ENODEV; + + tmp = strsep((char **)&buf, "\n"); + + for (val = 0; val < ARRAY_SIZE(power_limit_scheme); val++) + if (!strcasecmp(tmp, power_limit_scheme[val])) + break; + + if (val >= ARRAY_SIZE(power_limit_scheme)) + return -EINVAL; + + input[0] = led->id; + input[1] = led->indicator; + input[2] = ctrl; + input[3] = val; + + ret = nuc_nmi_cmd(dev, LED_SET_VALUE, input, NULL); + if (ret) + return ret; + + return len; +} + static LED_ATTR_RW(indicator); static LED_ATTR_RW(color); static LED_ATTR_RW(blink_behavior); static LED_ATTR_RW(blink_frequency); static LED_ATTR_RW(hdd_default); static LED_ATTR_RW(ethernet_type); +static LED_ATTR_RW(power_limit_scheme); LED_ATTR_POWER_STATE_RW(s0_brightness, brightness, 0); LED_ATTR_POWER_STATE_RW(s0_blink_behavior, blink_behavior, 0); @@ -1818,6 +1910,7 @@ static struct attribute *nuc_wmi_led_attr[] = { &dev_attr_indicator.attr, &dev_attr_hdd_default.attr, &dev_attr_ethernet_type.attr, + &dev_attr_power_limit_scheme.attr, NULL, }; -- 2.31.1 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel