From: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
To: gregkh@linuxfoundation.org
Cc: linuxarm@huawei.com, mauro.chehab@huawei.com,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
"Pavel Machek" <pavel@ucw.cz>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
linux-leds@vger.kernel.org, linux-staging@lists.linux.dev
Subject: [PATCH 16/17] staging: nuc-wmi: add support for changing the power limit scheme
Date: Sun, 16 May 2021 12:53:44 +0200 [thread overview]
Message-ID: <10df69ed906079c400d3f262102c8f3f05423243.1621161037.git.mchehab+huawei@kernel.org> (raw)
In-Reply-To: <cover.1621161037.git.mchehab+huawei@kernel.org>
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@kernel.org>
---
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
next prev parent reply other threads:[~2021-05-16 10:54 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-16 10:53 [PATCH 00/17] Add an experimental driver for Intel NUC leds Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 01/17] staging: add support for NUC WMI LEDs Mauro Carvalho Chehab
2021-05-16 16:12 ` Randy Dunlap
2021-05-17 8:20 ` Greg KH
2021-05-16 10:53 ` [PATCH 02/17] staging: nuc-wmi: detect WMI API detection Mauro Carvalho Chehab
2021-05-17 9:35 ` Dan Carpenter
2021-05-16 10:53 ` [PATCH 03/17] staging: nuc-wmi: add support for changing S0 brightness Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 04/17] staging: nuc-wmi: add all types of brightness Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 05/17] staging: nuc-wmi: allow changing the LED colors Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 06/17] staging: nuc-wmi: add support for WMI API version 1.0 Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 07/17] staging: nuc-wmi: add basic support for NUC6 WMI Mauro Carvalho Chehab
2021-05-17 9:44 ` Dan Carpenter
2021-05-16 10:53 ` [PATCH 08/17] staging: muc-wmi: add brightness and color for NUC6 API Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 09/17] staging: nuc-wmi: Add support to blink behavior for NUC8/10 Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 10/17] staging: nuc-wmi: get rid of an unused variable Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 11/17] staging: nuc-wmi: implement blink control for NUC6 Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 12/17] staging: nuc-wmi: better detect NUC6/NUC7 devices Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 13/17] staging: nuc-led: add support for HDD activity default Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 14/17] staging: nuc-wmi: fix software blink behavior logic Mauro Carvalho Chehab
2021-05-16 10:53 ` [PATCH 15/17] staging: nuc-wmi: add support for changing the ethernet type indicator Mauro Carvalho Chehab
2021-05-16 10:53 ` Mauro Carvalho Chehab [this message]
2021-05-16 10:53 ` [PATCH 17/17] staging: nuc-led: update the TODOs Mauro Carvalho Chehab
2021-05-16 18:21 ` Pavel Machek
2021-05-17 6:30 ` Mauro Carvalho Chehab
2021-05-17 8:05 ` Pavel Machek
2021-05-17 8:57 ` Mauro Carvalho Chehab
2021-05-17 9:12 ` Mauro Carvalho Chehab
2021-05-17 12:19 ` Mauro Carvalho Chehab
2021-05-17 8:18 ` [PATCH 00/17] Add an experimental driver for Intel NUC leds Greg KH
2021-05-17 9:02 ` Mauro Carvalho Chehab
2021-05-17 9:08 ` Greg KH
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